СИСТЕМА ДЛЯ ПОДАЧИ МАССЫ

Группа изобретений относится к пищевой промышленности, в частности к системе для формования продукта из пищевой массы. Система содержит формовочный элемент, например формовочный барабан с осью вращения, и питающий насос. Использование группы изобретений позволит обработку целого мускульного мяса и/или других нежных продуктов из пищевых масс. 2 н. и 14 з.п. ф-лы, 22 ил.

РОТАЦИОННЫЙ ВАКУУМНЫЙ НАСОС ЛОПАСТНОГО ТИПА

Изобретение относится к ротационному лопастному вакуумному насосу. Насос содержит приводной двигатель (1), взаимодействующий с камерой (2) для лопастного вакуумирования, в котором все поверхности насоса, расположенные в верхней половине насоса, сконфигурированы так, чтобы на них не было элементов, способных удерживать жидкости или твердые частицы. Насос, либо по меньшей мере в одной своей части снабжен средством (6) защиты, не содержащим поверхностей или полостей, способных удерживать жидкости или твердые частицы, либо приводной двигатель (1) содержит двойной кожух, верхняя часть которого образована цилиндром и является асинхронным двигателем с водяным охлаждением, который имеет корпус, вместе с цилиндром образующий пространство, в котором циркулирует охлаждающая среда. Изобретение направлено на создание ротационного лопастного вакуумного насоса, исключающего риск загрязнения и приспособленного, в частности, к средам, на которые распространяются строгие стандарты гигиены. 8 з.п. ф-лы, 8 ...

ШЕСТЕРЕНЧАТЫЙ НАСОС

... 1. Шестеренчатый насос с двумя находящимися в зацеплении шестернями (4, 5), которые посредством приводимого в действие приводного вала (7) и опорной цапфы (21) установлены с возможностью вращения в корпусе (1) насоса и между впускным отверстием (2) насоса и выпускным отверстием (3) насоса образуют систему (6) нагнетательных каналов, и с несколькими зазорами, образованными между корпусом (1) насоса, шестернями (4, 5), приводным валом (7) и опорной цапфой (21), при этом один из зазоров образован между приводным валом (7) и одной из шестерен (4), и при этом в этом зазоре расположено соединительное средство (9) для соединения без возможности поворота приводного вала (7) с шестерней (4), отличающийся тем, что зазор между приводным валом (7) и шестерней (4) уплотнен по отношению к торцам шестерни (4) с помощью уплотнительного средства (14.1, 14.2). ! 2. Шестеренчатый насос по п.1, отличающийся тем, что уплотнительные средства образованы по меньшей мере двумя расположенными на расстоянии друг ...

СПОСОБ И ОБОРУДОВАНИЕ ДЛЯ ПЛАСТИКАЦИИ И ПОДАЧИ МАКРОМОЛЕКУЛЯРНЫХ МАТЕРИАЛОВ, ОСНОВАННЫЕ НА УДЛИНЕННОМ ТЕЧЕНИИ

... 1. Способ пластикации и подачи макромолекулярных материалов, основанный на удлиненном течении, использующий набор щелей специфической формы, объем которых может периодически увеличиваться и уменьшаться; материалы затекают в щель при увеличении объема; при уменьшении объема происходит сжатие, пластикация и вытеснение материалов; таким образом, процесс пластикации и подачи происходит преимущественно под нормальным напряжением. ! 2. Оборудование для осуществления способа по п.1, включающее в себя одно или несколько лопастных устройств пластикации и подачи, каждое из которых преимущественно включает в себя полый цилиндрический статор 1, колонный ротор 2, установленный несимметрично относительно центра во внутренней полости статора 1, группу прямоугольных отверстий, образованных вдоль окружности ротора, несколько лопастей 3, равномерно расположенных в отверстиях и способных свободно перемещаться в радиальном направлении, а также перегородки 4, 5, установленные на обоих концах статора 1 соответственно ...

РОТОРНЫЙ НАСОС С ОПТИМИЗИРОВАННЫМИ ВПУСКАМИ И ВЫПУСКАМИ

... 1. Роторный насос (10), состоящий из корпуса (12) насоса, который снабжен впуском (14) и выпуском (16), причем корпус насоса (12) имеет облицовку (18), и в корпусе насоса (12) или же в пределах облицовки (18) расположены по меньшей мере два противоположно вращающихся ротора (20), которые во время их вращения образуют насосные камеры (22), причем роторы (20) уплотнены друг по отношению друг к другу, по отношению к корпусу (12) насоса и по отношению к облицовке (18), и причем в корпусе (12) насоса и/или в облицовке (18) в каждой насосной камере (22) расположены по меньшей мере две выемки (24), и причем выемки (24) расположены в пространственной близости к впуску (14) и/или к выпуску (16), отличающийся тем, что корпус (12) насоса и/или облицовка (18) в области впуска (14) и в области выпуска (16) имеет в каждом случае усиления (26) облицовки (18), посредством которых реализовано уменьшение поперечного сечения и, что поперечное сечение впуска (14) и выпуска (16) расширяются в направлении от ...

Förderpumpe mit einem schwenkbaren Wandelement

Förderpumpe (1), insbesondere Außenzahnradpumpe, umfassend: a) ein Gehäuse (2), welches einen Pumpenraum (3) einfasst, b) mindestens ein relativ zu dem Gehäuse (2) drehbares Förderelement (4, 5), welches in dem Pumpenraum (3) angeordnet ist, c) einen saugseitig angeordneten Einlasskanal (6), der angepasst ist, Fluid in den Pumpenraum (3) zuzuführen, und einen druckseitig angeordneten Auslasskanal (7), der angepasst ist, Fluid aus dem Pumpenraum (3) abzuführen, d) einen ersten Zuführkanal (8) und einen zweiten Zuführkanal (9), wobei der erste Zuführkanal (8) und der zweite Zuführkanal (9) in den Einlasskanal (6) münden, gekennzeichnet durch, e) zumindest ein relativ zu dem Gehäuse (2) schwenkbares Wandelement (10), das zumindest teilweise in dem Einlasskanal (6) angeordnet ist.

Rotationskolbendosierer

Pump Control System And Method

A pump control system 10 comprises a pump 12 having a pump member; a drive means 14 for driving the pump member; and control means 18 for monitoring a load on the pump member and selectively activating or deactivating the drive means 14 based on said load. The load may be a torque load on a motor 14 driving the pump 12 and an inverter 18 determines the torque load and activates or deactivates the pump 12 based on a torque load threshold corresponding to a torque load when pumping sludge or water in a waste treatment plant. Torque load may be calculated from motor current and the threshold may be a minimum load threshold representing sludge rather than water pumping. Used in settlement tanks to ensure that sludge rather than water is pumped to reduce water content in tankers. Rreduces downstream handling costs and is environmentally friendly.

Hydraulic motor-generator

Vacuum pumping system

A vacuum pumping system 10 comprises a plurality of vacuum pumping arrangements (pumps) 12, 14, 16 for evacuating a flammable gas stream and exhausting the gas stream through an exhaust outlet(s) 78. A housing 56 houses the pumping arrangements and forms an air flow duct for air flow 70 for mixing with the exhaust gas stream output in a mixing region 80. An airflow generator 77 generates an air flow through the air flow duct to cause mixing of air with the flammable gas stream to a percentage of the flammable gas in the air flow lower than a lower flammability limit of the flammable gas. An airflow sensor 130 senses the flow to determine if the air flow is sufficient to dilute the flammable gas to lower than said percentage. The mixing region may comprise a baffle arrangement (90, figure 2). The system preferably comprises tin traps (140, figure 2) and / or a hydrogen recovery system (HRC) (100, figure 3). The system may include an oxygen sensor.

A fuel boost pump assembly for an aircraft

Gear pump for the production of air liquid mixtures, in particular in soft ice and impact upper machines od.dgl.

STEERING METERING PUMP FOR PROMOTING LIQUIDS

GEAR-PUMP FOR MIXING GAS WITH LIQUID

Enhancement of surface-active solid-phase heterogeneous catalysts

Verifying relevance between keywords and web site contents

Vane-type rotary vacuum pump

The present disclosure relates to a vane-type rotary vacuum pump comprising a drive motor (1, 17) interacting with a vane-pump vacuum chamber (2), in which pump all the pump surfaces that are visible from the top are arranged in such a way that they have no elements likely to retain liquids or solids. The drive motor (1) may in particular be an air-cooled asynchronous motor or a water-cooled asynchronous motor with a case that, with the cylinder (18), forms a space in which a cooling fluid can circulate.

Wellbore desanding system

The invention relates to system and method for desanding an oil well that includes a fluidizing device (TORE), connected to a downhole pump that connects to a production tubing such that a supply duct is connected to the discharge of the pump and a discharge duct is connected to the suction of the pump. Embodiments include a pressure balance transition device between the TORE and the pump and/or a flow splitting device in the production tubing after the discharge of the pump. Other embodiments relate to a system and method for desanding an oil well in which a fluidizing unit is connected to a pump such that the supply duct is connected to an opening in the pump body or pump rotor and a discharge duct is connected to the suction of the pump. If connected to the rotor, the supply duct is integral to the pump rotor.

Method and apparatus for lubricating a screw pump system

A pump system includes inlet chambers, an outlet chamber, and rotors disposed inside the inlet chambers and the outlet chamber to pump a process fluid from the inlet chambers to the outlet chamber and to direct the process fluid to a separator. A gear chamber is configured to receive a portion of the process fluid from the separator. First and second sets of pump bearings are coupled to the rotors and lubricated by the portion of the process fluid flowing from the gear chamber. A conduit is configured to direct the portion of the process fluid from the pump bearings back to the gear chamber. Some of the portion of the process fluid lubricating the pump bearings is permitted to leak to the inlet chambers. Additional process fluid is continually added to the portion of the process fluid to compensate for fluid leaking to the inlet chambers.

GEAR-PUMP FOR MIXING GAS WITH LIQUID

ROTARY PISTON ENGINE

In a trochoidal rotary piston engine, a gear pump for supplying oil is mounted on an external shaft, said pump having a driving gear (14) of smaller diameter driving a gear (15) of larger diameter, wherein the gear (15) of larger diameter is coupled to a metering oil pump (10).

LOAD BALANCED POWER SECTION OF PROGRESSING CAVITY DEVICE

A progressing cavity device operates as a motor to impart torque to a bit. A stator of the device defines an internal profile having uphole stages with a first dimension being less than a second dimension of downhole stage. A rotor has an external profile with a constant outer dimension along its length. Disposed in the stator, the rotor defines cavities with the stator and is rotatable with pumped fluid progressing in the cavities from the uphole to downhole to transfer torque to the drive toward the downhole end. Although the rotor is subjected at the downhole end to a reactive torque from the bit, the interference fit of the rotor's constant dimension with the stator's downhole stages is less than with the uphole stages, which can mitigate issues with heat buildup in the downhole stages. The device can also operates as a progressing cavity pump.

DISTRIBUTOR APPARATUS WITH A PAIR OF INTERMESHING SCREW ROTORS

Distributor apparatus (10) for distributing a plurality of portions or streams of a flowable material comprising an enclosure (16) which locates interengaging rotors (48, 50). An inlet port (66) is provided in an upper part of the enclosure (16), which connects to a manifold (34) with five spaced inlets (36) through which material can pass to drive the rotors (48, 50). Material can pass round the rotors (48, 50) to a plurality of spaced outlets (38) for discharging to and from the apparatus (10).

COMPACT SEALLESS SCREW PUMP

A screw pump, includes a pump case having a fluid inlet, a pumping chamber, and a fluid discharge with at least two intermeshed parallel screw members rotatably mounted therein and in fluid communication with the fluid inlet and the fluid discharge. One synchronous electric drive motor mounted to each screw member provides the driving power to the screws. Electronic controls are provided for sensing the rotary positions of the motors for synchronizing rotation of the screw members. The pump is also capable of pumping multi-phase fluids.

Rotationspumpe

Verfahren und Vorrichtung zum Mischen und Homogenisieren von Flüssigkeiten verschiedener Viskosität

Zahnradpumpe zur Herstellung von Luft-Flüssigkeitsgemischen, insbesondere in Softeis- und Schlagsahnemaschinen

Heatable gear pump

Lacquer steering metering pump.

Es wird eine Lackdosierpumpe (1) angegeben mit einem Gehäuse (2), in dem ein erstes Zahnrad (8) und ein mit dem ersten Zahnrad (8) in Eingriff stehendes zweites Zahnrad (9) angeordnet sind, wobei mindestens das erste Zahnrad (8) mit einer Welle (10) im Gehäuse (2) gelagert ist, und mit einer dem ersten Zahnrad (8) zugeordneten Dichtung (20, 21) wobei jedes Zahnrad (8, 9) einen durch eine Verzahnung gebildeten Förderbereich (18, 19) aufweist.
Man möchte den Einsatz einer derartigen Dosierpumpe wirtschaftlicher gestalten.
Hierzu ist vorgesehen, dass die Dichtung (20, 21) zwischen dem Förderbereich (18, 19) und einem Stirnseitenbereich des Zahnrads (8, 9) angeordnet ist.

Rotary vane pump for pumping a liquid, in particular for a water closet with Unterdu.

Die Erfindung bezieht sich auf das Gebiet von Wasserklosetts mit Unterduscheinrichtung. Die Erfindung betrifft unter anderem eine fliegend gelagerte Drehschieberpumpe 11 für ein Wasserklosett mit Unterduscheinrichtung, die Verwendung der Drehschieberpumpe in einem Wasserklosett sowie ein Wasserklosett mit einer solchen Drehschieberpumpe 11. Ferner betrifft die Erfindung einen Boiler mit einem Flächenheizelement für ein Wasserklosett mit Unterduscheinrichtung, die Verwendung des Boilers in einem Wasserklosett sowie ein Wasserklosett mit einem solchen Boiler. Überdies betrifft die Erfindung eine Montage-Baugruppe aus einem Boiler, einer Drehschieberpumpe und einer Mischeinrichtung für ein Wasserklosett mit Unterduscheinrichtung, die Verwendung der Montage-Baugruppe in einem Wasserklosett sowie ein Wasserklosett mit einer solchen Montage-Baugruppe.

STATOR ROTARY PLATE PUMP

УСИЛЕНИЕ ПОВЕРХНОСТНО-АКТИВНЫХ ТВЕРДОФАЗНЫХ ГЕТЕРОГЕННЫХ КАТАЛИЗАТОРОВ

Активность поверхностно-активного твердофазного катализатора может быть значительно улучшена путем создания преднамеренных повторяющихся контактов поверхности о поверхность между частями активных поверхностей каталитических объектов. Хотя они погружены в материал реагента, такие контакты между частями активных поверхностей каталитических объектов могут значительно активировать поверхности многих гетерогенных катализаторов. Даются примеры такого действия с использованием множества предварительно заданных форм, нанесенных каталитических структур и т.д., перемешиваемых или иным образом приводимых в контакт с получением многочисленных поверхностных столкновений. Один вариант осуществления использует механизм шестеренчатого насоса с зубцами шестерней с каталитически активной поверхностью для создания повторяющегося временного контактирующего действия во время прокачивания потока реагента. Изобретение применимо для многих других форм для получения действия временного контактирования каталитических ...

Packaged vacuum pump and oil pump, and system and method thereof

The invention discloses a packaged vacuum pump and oil pump, and a system and a method thereof. The packaged vacuum pump and oil pump for use in a vehicle generally includes an oil pump module and a vacuum pump module. The oil pump module is configured to circulate oil, and is fitted to a first drive shaft configured to transmit torque to the oil pump module. The vacuum pump module is configured to generate a vacuum, and is fitted to a second drive shaft configured to transmit torque to the vacuum pump module. The packaged vacuum pump and oil pump also includes a clutch. The clutch connects the first drive shaft and the second drive shaft, and is configured to transfer torque from the first drive shaft to the second drive shaft when the clutch is engaged. The clutch may be a hydraulic clutch configured to receive a pressurized fluid, which may be oil received from the oil pump module, to engage the clutch.

DRUM MOUNTED, ON-DEMAND FLUID TRANSFER PUMP

An on-demand fluid transfer pump, comprising: a power head removably connectable on top of a stem that is removably connectable to a fluid supply; wherein the power head comprises an electric pump anda flow control unit configured to automatically switch the electric pump on and off; wherein the flow control unit comprises a magnetic sensor; and wherein the stem comprises: a suction tube, a fluidchamber, a plunger chamber, and a magnetic plunger reciprocable within the plunger chamber in response to pressure changes in the fluid chamber, wherein the magnetic plunger is biased to deactuate the magnetic sensor to switch on the electric pump to pressurise the fluid supply for delivery to the fluid dispenser; and wherein the magnetic plunger is pushed when pressure in the fluid chamber risesto thereby actuate the magnetic sensor to switch off the electric pump.

Variable mixer for installation with great variation of flow

VACUUM PUMPING SYSTEM

FLUID TRANSFER PUMP

A portable fluid transfer method and apparatus for moving a fluid from a source to a destination. The apparatus comprises a pump driven by an air motor, an activating valve, a needle valve for adjusting the flow of air from the air motor, and connections to the source of fluid that allow the fluid to be contained throughout the transfer to the destination.

FOAM PUMP

Dispensing systems and refill units are disclosed herein. One exemplary refill unit includes a liquid reservoir and a rotary liquid pump having a liquid inlet in fluid communication with the liquid reservoir. The rotary liquid pump includes a housing, wherein at least a portion of the housing is resilient and a rotor that has one or more apexes. During operation, the one or more apexes contact the resilient portion of the housing and deflect the resilient portion of the housing resulting in the movement of a liquid. A mixing chamber having a liquid inlet and an air inlet is also provided. The liquid pump outlet is in fluid communication with the mixing chamber liquid inlet and the air inlet if in fluid communication with an air pump. An outlet nozzle is in fluid communication with the mixing chamber outlet for dispensing foam formed by mixing the liquid and air together.

POSITIVE DISPLACEMENT, GEAR TYPE PUMP

Gear metering pump for compounded elastomeric material

СПОСОБ И ОБОРУДОВАНИЕ ДЛЯ ПЛАСТИКАЦИИ И ПОДАЧИ МАКРОМОЛЕКУЛЯРНЫХ МАТЕРИАЛОВ, ОСНОВАННЫЕ НА УДЛИНЕННОМ ТЕЧЕНИИ

Группа изобретений относится к способу и оборудованию для пластикации и подачи макромолекулярных материалов, основанным на удлиненном течении. В способе используется набор щелей, объем которых может периодически увеличиваться и уменьшаться. При увеличении объема материалы затекают в щели. При уменьшении объема происходит сжатие, пластикация и нагнетание. Таким образом, процесс пластикации и подачи преимущественно происходит под нормальным напряжением. Оборудование включает в себя одно или несколько лопастных устройств пластификации и подачи. Каждое лопастное устройство включает полый цилиндрический статор, колонный ротор, установленный несимметрично относительно центра во внутренней полости статора, группу прямоугольных отверстий, образованных вдоль окружности ротора, несколько лопастей, равномерно расположенных в отверстиях, а также перегородки, установленные на обоих концах статора соответственно. Настоящее изобретение обладает краткой термомеханической историей, низким энергопотреблением ...

МНОГОСТУПЕНЧАТЫЙ НАСОС

УСТРОЙСТВО ДЛЯ ЗАПОЛНЕНИЯ ТЕКУЧЕЙ СРЕДОЙ, ЕЕ ТРАНСПОРТИРОВАНИЯ И НАГНЕТАНИЯ

Насос в опорном и уплотняющем корпусе 21 содержит впускную полость 28 и приводной вал 23, который приводит в движение ротор и две подсоединенные к нему направляющие пластины 40.2. В кольцевых канавках направляющих пластин установлены скользящие кольца 45.1, 45.2. Эти скользящие кольца несут на себе совершающие колебательные движения лопасти 46.1, 46.2, которые проникают в приемные полости и отводятся из них с соблюдением гигиенических требований в случае продуктов питания, лекарственных препаратов и косметики, при этом они также могут плавно перемещать восприимчивые к воздействиям составляющие продуктов питания, например фрукты ...

Fördervorrichtung mit beidseitiger Lagerung

Fördervorrichtung (1) zum Fördern von pastösen Massen, insbesondere Lebensmittel-Massen, mit einer Förderkammer (2) mit mindestens einem Einlass (10) und einem Auslass (12), und mindestens einer in der Förderkammer (2) angeordneten Förderschnecke (4, 6) zum axialen Fördern von pastöser Lebensmittel-Masse von dem Einlass (10) zu dem Auslass (12), dadurch gekennzeichnet, dass die Förderschnecke (4, 6) mittels zweier beabstandeter Lager (14, 16, 114, 116) drehbar gelagert ist, die Förderkammer (2) auslassseitig mit einem Deckel (20) verschließbar ist, der Auslass (12) in dem Deckel (20) ausgebildet ist und das auslassseitige Lager (14, 16) an dem Deckel (20) angeordnet ist.

Pump, particularly internal- or external gear pump, vane pump, axial piston pump or radial piston pump, has data store, in which characteristic curve indicating relationship between speed of drive shaft and fluid flow of pump is stored

The pump has a rotatable drive shaft and a suction- and pressure connection, where a fluid flow from the suction connection to the pressure connection is effectuated by the rotation of the drive shaft. The pump is provided with a data store, in which a characteristic curve is stored, which indicates the relationship between the speed of the drive shaft and the fluid flow of the pump. The data store is a bar code or a matrix code, which is mounted on the outer surface of the pump. The pump has a constant displacement volume.

Solaranlage mit Zahnradpumpe

Hand pump for corrosive and volatile liquids

A pump with a single piece vane that slides backwards and forwards through a channel in a core 122 while the core is rotated. The vane is flexible near each end 125, 126 and the overall length of the vane is greater than the distance in a straight line through the centre point of the core from a position on the wall of a cylinder to the opposite side of the cylinder wall 123. The ends of the vane are flexible to maintain pressure against the surface of the cylinder walls. The vane may be constructed of three or more pieces. The interior of the pump in contact with the liquids being pumped may be constructed of PFTE or other corrosion resistant material, while the outside is in the form of a protective shell to prevent the PFTE being damaged. The arrangement allows for pumping corrosive liquids in which the mechanism is made entirely from a corrosion-proof material.

IMPROVEMENTS IN PUMPS

Gear pump housing keyed to end cover to prevent deflection under pressure

A rotary positive displacement hydraulic machine in the form of a gear pump or motor comprises a housing 10 defining two mutually intersecting parallel working chambers 11, 12 in which two meshing rotors 19 and 20 are mounted for rotation, respectively. Two bearing supports 14 and 15 are provided at opposite ends of the chambers and each bearing support supports bearings 16, 17 in which the rotors are journalled for rotation. At least one end of the housing is closed by a separate end cover 13. The separate end cover and an adjacent end of the housing each has at least one elongate recess 30 respectively on each of the two major sides of the working chambers. The recesses in the end cover are aligned with respective recesses in the adjacent end of the housing and there is at least one keying element 34 in each pair of aligned recesses so that the open end of the housing is supported against deflection due to fluid pressure in the chambers.

Pump control system and method

Procedure and device for mixing and homogenizing liquids of different viscosity

MICRO ENGINE AND MICRO PUMP

PRECISELY KLEINSTLAGERUNG AND ASSEMBLY PROCEDURES FOR IT

DEVICE WITH A GEAR PUMP AND A DIREKTANTRIEB AS WELL AS AN EXTRUSION EQUIPMENT

HIGH PRESSURE CLEANING EQUIPMENT

MORE ROTATIONSKOLBENDOSIERER

High pressure cleaning device

Wellbore desanding system

The invention relates to system and method for desanding an oil well that includes a fluidizing device (TORE), connected to a downhole pump that connects to a production tubing such that a supply duct is connected to the discharge of the pump and a discharge duct is connected to the suction of the pump. Embodiments include a pressure balance transition device between the TORE and the pump and/or a flow splitting device in the production tubing after the discharge of the pump. Other embodiments relate to a system and method for desanding an oil well in which a fluidizing unit is connected to a pump such that the supply duct is connected to an opening in the pump body or pump rotor and a discharge duct is connected to the suction of the pump. If connected to the rotor, the supply duct is integral to the pump rotor.

GEAR PUMP-LIQUID GAS MIXER WITH IMPROVED GAS INTRODUCTION

A two stage mixing gear pump for dispersing a gas into a liquid wherein a metered quantity of liquid from the first stage of the pump is supplied to gas filled inter tooth spaces of the second stage pump. The gas is introduced into the inter tooth spaces of the second stage of the pump through a gas inlet which is adjacent the low pressure side of the gear teeth meshing zone ox the second stage of the pump and the liquid enters the gas containing inter tooth spaces downstream of the gas inlet.

ROTARY FLUID FLOW DEVICE

A positive displacement device that converts energy, namely positive displacement compressors that rotate in a single rotational direction to displace working fluid contained in operating chambers. The device described herein is particularity advantageous for the ability to achieve high compression ratios in combination with high discharge pressure and high volumetric throughput in a single stage.

ROTARY PISTON ENGINE HAVING A GEAR PUMP AND AN OIL METERING PUMP

A trochoidal design rotary piston engine design has an external axis cogwheel oil pump which has a smaller diameter drive cogwheel which drives a larger diameter size cogwheel where the larger diameter size cogwheel is coupled to an oil-metering pump. The larger cogwheel is supported in a side disk disposed at one side of an engine housing forming a combustion engine.

ROTARY PISTON MACHINE

Proposed is an electrically driven rotary piston machine which operates as a rotary piston pump or rotary piston compressor, having a base housing (1) which holds an electric coil (2) and a pump head (3), wherein the pump working space is preferably delimited by a trochoidal toothing of the rotors (15, 17). According to the invention, the pump head (3), which can usually be produced relatively cost-effectively, is designed as a disposable part and therefore has a quick-action connection (7, 10, 11, 12, 14) to the more expensive base housing (1).

METHOD FOR PLASTICATING AND CONVEYING MACROMOLECULAR MATERIALS BASED ON ELONGATIONAL FLOW AND EQUIPMENT THEREOF

Disclosed herein are a method and a device for plasticizing and transport ing polymer material based on elongation rheology. The device comprises one or more vane plasticizing and transporting units, which includes a stator (1 ) with cylindrical inner cavity, a rotator (2) arranged eccentrically in the inner cavity of the stator (1), several vanes (3) arranged in the direction of the diameter of the rotator (2) and uniformly distributed around the cir cumferential direction, and two stock-stopping pans (4, 5) arranged at both sides of the stator (1). A space having certain geometry is enclosed by the internal surface of the stator (1), the external surface of the rotator (2), two vanes (3) and two stock-stopping pans (4, 5). The volume of the space m ay change periodically from small to large, then from large to small in turn . The material is fed when volume of the space becomes large, and the materi al is compacted, plasticized and exhausted when volume of the space becomes small. The ...

ROTARY LOBE PUMP WITH DIRECT DRIVE

The invention relates to a rotary lobe pump comprising a pump housing with a pump chamber, an inlet and an outlet opening, a first multi-lobed rotary piston arranged in the pump chamber and rotatably mounted around a first axis and a second multi-lobed rotary piston arranged in the pump chamber which is rotatably mounted around a second axis spaced apart from the first axis and meshes with the first rotary piston, wherein the first and second rotary pistons, by rotating around the first and the second axis respectively, create a fluid flow from the inlet to the outlet opening, a drive unit which is mechanically coupled with the rotary pistons in order to drive the rotary pistons. According to the invention, the drive unit comprises a first electric drive motor, which is mechanically coupled with the first rotary piston for driving the first rotary piston, and a second electric drive motor, which is mechanically coupled with the second rotary piston for driving the second rotary piston.

FOODSTUFF CONVEYOR APPARATUS AND METHOD OF CONVEYING A FOODSTUFF

The invention concerns a foodstuff conveyor apparatus (1) comprising a foodstuff inlet (3), a foodstuff outlet (5), a conveyor chamber (7) arranged between the inlet (3) and the outlet (5), and a conveyor screw (9) extending in the conveyor chamber (7). According to the invention it is proposed that the conveyor screw has an inlet-side spindle portion (11), an outlet-side spindle portion (13) and a spindle-free portion (15) separating the spindle portions (11, 13). The invention further concerns a method of conveying a foodstuff.

Enhancement of surface-active solid-phase heterogenous catalysts

Surface-active solid-phase catalyst activity may be substantially improved by creating deliberate repetitive surface-to-surface contact between portions of the active surfaces of catalyst objects. While they are immersed in reactant material such contact between portions of the active surfaces of catalyst objects can substantially activate the surfaces of many heterogeneous catalysts. Examples are given of such action employing a multitude of predetermined shapes, supported catalyst structures, etc. agitated or otherwise brought into contact to produce numerous surface collisions. One embodiment employs a gear pump mechanism with catalytically active-surfaced gear teeth to create the repetitive transient contacting action during pumping of a flow of reactant. The invention is applicable to many other forms for creating transient catalytic surface contacting action. Optionally catalytic output of such systems may be significantly further improved by employing radiant energy or vibration.

Device of pump for liquids

SYSTEM OF VALVES AND FITTINGS FOR USE IN A SHIP

Dispositif 7 de commande d'un actionneur hydraulique destiné à actionner un robinet, le dispositif de commande comportant un moteur 8, notamment électrique, une pompe 9 hydraulique, notamment à engrenage, et un réservoir 10 ayant une enveloppe 11.

bomba de pistão rotativo com entradas e saídas otimizadas

HAND-HELD CLEANING MACHINE

A hand-held cleaning machine mainly includes: motor (11), speed reducer (10), pump body (3), nozzle (1), and handle (4). There are a main transmission shaft (7) and at least a driven shaft (13) installed in the pump body (3). The main transmission shaft (7) connects with the speed reducer (10) in transmission, and a driving hydraulic gear (8) is fixed on the main transmission shaft (7). The driving hydraulic gear (8) engages with a driven hydraulic gear (12) fixed on the driven shaft (13) relative to transmission. Water inlet and outlet cavities (19,15) constituting water flow channels are formed in the pump body (3). The water inlet and outlet cavities (19,15) communicate with a cavity in which the driving hydraulic gear (8) fixed on the main transmission shaft (7) and the driven hydraulic gear (12) fixed on the driven shaft (13) exist. Therefore, high pressure is generated by the engagement of the driving hydraulic gear (8) and the driven hydraulic gear (12) rotating in high speed. Compared ...

METHOD AND DEVICE FOR THE PRECISE REGULATION OF A LIQUID FLOW

Method and device for the precise dosing of a pressurized liquid, with the aid of a device, in which there is a pair of gears (4, 5), which are installed on shafts (2, 3) in a gear housing, in the wall of which is a channel (15), the shaft (2) being hollow, and in the wall of the shaft (2) there is an opening (17), in order to permit a liquid flow between the external and internal spaces of the shaft. The dosing speed of the liquid brought through the channel (15) to the pair of gears (4, 5) is regulated by rotating the hollow shaft (2) with the aid of a drive device (16), and the power of the flow exceeding the desired amount is cut off with the aid of the rotation of the gear (4) relative to the shaft (2), when the opening (17) is throttled by the rotation.

MINIATURE PRECISION BEARINGS FOR MINISYSTEMS OR MICROSYSTEMS AND METHOD FOR ASSEMBLING SUCH SYSTEMS

The aim of the invention is to obtain a cost-effective solution for providing a microsystem with bearings which have sufficiently high precision and long-term stress resistance. The invention relates to a method for producing, adapting or adjusting a bearing in a fluid microcomponent (M) comprising a stator (30) and a rotor (40, 2). Said rotor is rotatably positioned on the at least one bearing (L10, L11) in relation to the stator. The rotor (40, 2) is rotatably positioned by means of a bushing (10, 11) which is inserted into the stator (30) in order to form the bearing, the at least one bushing being inserted in the stator in the form of a bearing bushing and comprising an inner and an outer surface (10i, 10a; 11i, 11a). Before being positioned in the stator, said bearing bushing (10, 11) is a particular bearing component comprising an inner surface (10i, 11i) as an inner bearing surface which is mechanically finish-machined. The outer surface (10a, 11a) of the bearing component (10, 11 ...

OSCILLATING SLIDE MACHINE

The invention relates to a controllable hydraulic oscillating slide machine (1) (pump or motor), comprising - an inner rotor (3) arranged in a housing (2) and having cylindrical recesses (4), - a bearing (6) formed in the housing (2), in which a co-rotating outer rotor (7) is mounted eccentrically to the inner rotor (3), said outer rotor having several pivotably suspended slide drivers (8) which engage into the recesses (4) of the inner rotor (3) for rotationally driving the outer rotor (7) by means of the inner rotor (3) and form modifiable chambers (9). The essential feature of the invention is that - the slide drivers (8) are each coupled to a piston (10) which is guided in a respective associated recess (4), - a pressure level different from that in the chambers (9) between the inner (3) and the outer rotor (7) can be set in the chambers (11) delimited by the recesses (4) and the associated pistons (10) so that two different pressure levels can be generated and two different consumers ...

MICROFABRICATED, TUBE LOCATED GEAR PUMP SYSTEM

A gear-type pump is placed in line with the conduit or tube (14) through which flows the fluid to be pumped. The pump body (12) is preferably manufactured using microfabrication techniques and is secured within the tube. The mechanism (24) for driving the pump body to pump fluid is mounted completely outside of the tube.

Powder pump capable of effectively conveying powder and image forming apparatus using powder pump

A powder pump includes a stator having a through hole that comprised of two spirally extended grooves, and a rotor, which is rotatably provided to the through hole of the stator and is spirally extended such that a cavity to convey a powder is formed between an outer peripheral surface of the rotor and an inner peripheral surface of the through hole of the stator. The rotor is configured to convey the powder enclosed in the cavity while moving the cavity. Wherein the expressions ((RA−SN)≧0.45 and ((RB−(SN+SX)/2)≧0.45), one satisfied when a diameter of a cross section of the rotor, an outer diameter of the rotor, a minimum inner diameter of the through hole of the stator, a maximum inner diameter of the through hole, are in millimeters and represented by RA, RB, SN, and SX, respectively.

FRETTING-CORROSION-PREVENTION OSCILLATING VANE TYPE PUMP ACTUATOR

Disclosed herein is an oscillating vane type pump actuator. The pump actuator of the present invention provides a method of preventing fretting corrosion from being caused on joined surfaces of elements. A cylinder (3c) has a comparatively low radial strength, and each of side covers (1c) and (2c) has a high radial strength. A cylindrical portion (1c-c), (2c-c) is provided on each side cover. Thus, when high pressure of work oil distorts the cylinder into a shape in which the cross-section of the cylinder becomes an ellipse-like shape, the cylindrical portions of the side covers act such that they are distorted in the same shape as that of the cylinder. Further, a passage that always communicates with a low-pressure side working chamber is formed in the contact surfaces between a fixed vane that is fixed to the cylinder and the side covers.

Rotary fluid flow device

A positive displacement device that converts energy, namely positive displacement compressors that rotate in a single rotational direction to displace working fluid contained in operating chambers. The device described herein is particularity advantageous for the ability to achieve high compression ratios in combination with high discharge pressure and high volumetric throughput in a single stage.

Devices Employing Colloidal-Sized Particles

The present invention relates to the use colloidal particles to realize photonic and microfluidic devices. In particular embodiments, colloidal particles are used to realize microfluidic a two-way valve, three-way valve, check valve, three-dimensional valve, peristalsis pump, rotary pump, vane pump, and two-lobe gear pump. In certain embodiments, actuation of an active element in the microfluidic structure is accomplished by electrophoresis, the use of an optical trap or “tweezer”, or the application of an electric field or magnetic field. In other embodiments, the application of an electrical field to colloidal particles that are substantially constrained to two dimensional movement is used to realize wave guides, filters and switches for optical signals.

CLUTCH ASSEMBLY WITH A GEAR PUMP

A drive system is provided for coupling a clutch assembly with a pump assembly that provides fluid power to cool, lubricate and control the operation of the clutch. The drive system comprises a drive coupling rotatably supported on an input shaft by a plurality of bearing members. The bearing members permit the drive coupling to rotate independent of the rotation of the input shaft. The drive coupling is provided with at least two splined surfaces for engaging a corresponding splined surface on both the clutch assembly and the pump. The drive system counteracts radial loads generated within the pump and moment loads generated at the splined connections to the prevent premature wear or damage to the pumping elements and mating components.

АГРЕГАТ ЭЛЕКТРОНАСОСНЫЙ

Полезная модель относится к машиностроению, в частности к насосам, предназначенным для перекачивания жидких радиоактивных отходов, и может быть использована на атомных станциях и в радиохимической отрасли.Агрегат электронасосный для перекачивания жидких радиоактивных отходов содержит насос с всасывающим и напорным патрубками, соединенными с опорой фланцами, электродвигатель, шнек, выполненный в виде винта, круглое поперечное сечение которого смещено относительно оси вращения винта, муфту, соединяющую ротор электродвигателя соосно с карданным валом, передающим крутящий момент шнеку, вращающимся внутри обоймы. Насос содержит корпус, с обеих сторон которого закреплены штуцеры охлаждения уплотнений, на корпусе установлен патрубок подачи жидкости, патрубок сдувки, патрубок слива отходов корпуса, штуцер отвода протечек из стакана, сигнализаторы нижнего и верхнего уровня и датчик давления, установленные в штуцерах. Муфта выполнена лепестковой. 1 з.п. ф-лы, 2 фиг.

СПОСОБ ЭКСПЛУАТАЦИИ МНОГОФАЗНОГО ВИНТОВОГО НАСОСА И НАСОС

Использование: в насосостроении и касается способа эксплуатации многофазного винтового насоса и самого насоса. Сущность изобретения: многофазный винтовой насос с по меньшей мере одним подающим винтом, заключенным в корпус, имеет с одной стороны по меньшей мере один напорный патрубок. Всасываемая среда малопульсирующим непрерывно подаваемым потоком перемещается параллельно винтовому валу и непрерывно выводится через напорный патрубок. Для устранения недостатков, проявляющихся обычно на фазах сухого хода, согласно изобретению предлагается отбирать с напорной стороны часть объемного расхода жидкости, дозировано возвращать ее в зону всасывания и таким образом поддержать в состоянии циркуляции, 2 с. и 14 з.п. ф-лы, 3 ил.

Насосная установка высокого давления

Изобретение относится к насосной установке высокого давления. Установка содержит насосный агрегат, состоящий из электродвигателя 14 и насоса 12, установленного во внутренней полости герметичного корпуса 13, герметичный бак смазки, последовательно включенные в контур подачи смазки потребителю. Насос 12 соединен с электродвигателем 14 через магнитную муфту, включающую размещенные в кожухе внутреннюю и наружную полумуфты 15 и 16 с постоянными магнитами из редкоземельных металлов, установленные, соответственно, на приводные валы насоса 12 и электродвигателя 14, и защитный экран 17, изолирующий внутреннюю полость корпуса насоса 12 от электродвигателя 14. Корпус 13 выполнен с подводом охлаждающего газа к магнитной муфте, связанным через лабиринтное уплотнение и отверстия в корпусе 13 и полумуфте 15 с внутренней полостью корпуса 13, сообщенной с газовой полостью бака смазки через линию отвода охлаждающего газа. Постоянное давление в баке смазки поддерживается по линии суфлирования, сообщенной ...

ПРОВЕРКА РЕЛЕВАНТНОСТИ МЕЖДУ КЛЮЧЕВЫМИ СЛОВАМИ И СОДЕРЖАНИЕМ ВЕБ-САЙТА

... 1. Способ проверки релевантности между терминами и содержанием веб-сайта, причем способ заключается в том, что получают содержание сайта из URL предложения цены, формулируют расширенный(ые) термин(ы), семантически и/или контекстуально связанный(ые) с термином(ами) предложения цены, генерируют измерения подобия содержания и расширенного подобия из соответствующих комбинаций термина(ов) предложения цены, содержания сайта, и расширенных терминов, при этом измерения подобия, указывают на взаимосвязанность между соответствующими термином(ами) предложения цены, содержанием сайта и/или расширенными терминами, вычисляют измерения подобия категории между расширенными терминами и содержанием сайта ввиду классификатора подобия, при этом классификатор подобия, обучается из проанализированного содержания сайта, связанного с данными каталога, вычисляют значение достоверности из объединенных одних из множества измерений подобия, где объединенные одни из измерений включают измерения подобия содержания, ...

PUMPVERFAHREN ZUM BETREIBEN EINER MULTIPHASEN-SCHRAUBENSPINDELPUMPE UND PUMPE

MIKROMOTOR UND MIKROPUMPE

A fuel boost pump assembly for an aircraft

A fuel boost pump assembly 100 (200, 300) for an aircraft, comprising a first inlet 101 (201, 301) receiving a first pressurised fuel flow, a pump 110 (210, 310) for transferring fuel between a second inlet 102 (202,302) and assembly outlet 103 (203, 303), a hydraulic motor (120, 220, 320) fluidly connected between the first inlet and the assembly outlet. The hydraulic motor is mechanically coupled to and adapted to drive the pump, e.g. via a shaft 130 (230, 330). The hydraulic motor converts the hydraulic energy of the first pressurised fuel flow into driving energy of the pump. The pump generates a second pressurised fuel flow between the second inlet and the assembly outlet. The pump may comprise an impeller 111 (211, 311). The hydraulic motor may comprise a Francis turbine 122, a Tesla turbine (222, figure 4), or gear motor (322, figure 6).

Filling, fluid-transporting and pumping device

The pump has in a bearing and sealing housing (21) an inlet space (28) and a drive shaft (23), which drives a rotor (55) and two eccentric guide plates (40.2) connected thereto. Slide rings (45.1, 45.2) are mounted in the later in annular grooves. These slide rings carry rocking vanes (46.1, 46.2) which penetrate into or are withdrawn from vane receiving spaces by way of hygienic requirements, as in the case of foodstuffs, medicines and cosmetics, and can also convey sensitive constituents, such as fruit or other foodstuffs constituents, gently. ...

Hydraulic motor-generator

A hydraulic motor - generator or dynamo comprises a stator 1 and an internal, elliptical, or similar shaped, rotor 2 which is in sealing contact with the stator at its apexes. The stator has a circular internal cross section and at least a pair of shutters or vanes 4 and 5 which slide inwardly towards the rotor axis. Magnets 7 are mounted to an internal surface of the rotor around a stationary core 3 with windings. Seals 9, 10, 11, 16 and 17 act at the points of contact between the rotor, stator and shutters. Hydraulic fluid entering chambers 19 causes the rotor and magnets to rotate about the core generating electricity.

Improvements relating to rotary pumps

... 970,820. Separating liquids from gases ; centrifugal separators. ROPER HYDRAULICS Inc. Dec. 7, 1962, No. 46365/62. Headings B1T and B2P. [Also in Division F1] A rotary pump for centrifugally separating two fluids of different densities comprises means defining a number of expansible and contractible pumping compartments, means for rotating the compartments, means for effecting relative movement of the inner and outer walls of the compartments away from each other adjacent the inlet 75 and towards each other as they move through a discharge zone, a first outlet port 81 communicating with the parts adjacent the inner wall of the compartments and a second outlet port 821 communicating with the outer parts of the compartments. As shown, the pump body 51 contains an eccentric ring 65 and a rotor 68 eccentrically disposed with respect to the inner periphery of the ring 65. Vanes 71 extend into a running seal with the inner surface of ring 65 forming between them pumping compartments.

Method and apparatus for managing fluid flow within a screw pump system

PLANT WITH INSERTED PUMP AND FLUID FLOW MEASURER

WOBBLE PUMP.

FILLING, FLUID TRANSPORT AND PUMPING MECHANISM

Method for improving accuracy in a peristaltic pump system based on tubing material properties

A method for forming peristaltic pump cassettes includes cutting tubing segments to different lengths based on the physical properties of the individual tubing segments. The size variations compensate for the physical parameters of the tube and improve accuracy in a peristaltic pump using the cassettes.

Biomass cake pressure-feeding device

A biomass cake pressure-feeding device equipped with: a screw pump, which has a first screw having a helical first transport tooth, a second screw having a helical second transport tooth, and a casing accommodating the first screw and the second screw in parallel, and which dispenses to a high-pressure reactor a biomass cake in which water has been added to a powder of a biomass; and a constricting unit, which is positioned downstream from the screw pump and restricts the flow of the biomass cake, thereby forming a material seal by means of the biomass cake.

ROTARY PUMP WITH RESILIENTLY DEFORMED SEAL

... ²²²A pump is formed by a housing (10) having an inlet (11) for connection to a ²source of fluid and an outlet (12) for pumped fluid. A rotor (15) is rotatable ²within the housing and the inlet (11) and the outlet (12) are spaced apart ²around the path of the rotor (15) in the housing. The rotor (15) has surfaces ²(16a, 16b, 16c, 16d) that form, with the housing (10), closed chambers (18a, ²18b, 18c, 18d) which travel around the housing (10) to convey fluid from the ²inlet (11) to the outlet (12). The housing (10) carries a seal (14) that is ²located between the inlet (11) and the outlet (12) in the direction of travel ²of the rotor (15). The seal (14) co-operates with the rotor surfaces (16a, ²16b, 16c, 16d) as the surfaces (16a, 16b, 16c, 16d) pass between the outlet ²(12) and the inlet (11) to prevent the formation of a chamber during said ²passage and so prevent fluid flow from the outlet (12) to the inlet (11). Such ²a pump is easily and cheaply produced and is particularly useful in ...

POSITIVE DISPLACEMENT, GEAR TYPE PUMP

WELLBORE DESANDING SYSTEM

The invention relates to system and method for desanding an oil well that includes a fluidizing device (TORE), connected to a downhole pump that connects to a production tubing such that a supply duct is connected to the discharge of the pump and a discharge duct is connected to the suction of the pump. Embodiments include a pressure balance transition device between the TORE and the pump and/or a flow splitting device in the production tubing after the discharge of the pump. Other embodiments relate to a system and method for desanding an oil well in which a fluidizing unit is connected to a pump such that the supply duct is connected to an opening in the pump body or pump rotor and a discharge duct is connected to the suction of the pump. If connected to the rotor, the supply duct is integral to the pump rotor.

No-Go Tag Systems and Methods for Progressive Cavity Pumps

A stator for a progressive cavity pump comprises a stator housing having a central axis, a first end, and a second end opposite the first end. In addition, the stator comprises a stator liner disposed within the stator housing. The stator liner has a first end and a second end opposite the first end. The first end of the stator liner is axially spaced from the first end of the stator housing. Further, the stator comprises a tag insert positioned in the stator housing between the first end of the stator housing and the first end of the stator liner. The tag insert has a through passage defining a radially inner surface that includes a tag shoulder.

Downhole Backspin Retarder for Progressive Cavity Pump

A backspin retarder for a progressive cavity pump deploys on the drive string uphole from a pump unit. The backspin retarder has a shaft that connects to portions of the drive string. An impeller disposes on the shaft and can move axially and radially. In an unengaged condition, the impeller and shaft can rotate relative to one another so the drive string can rotate in a drive direction without impediment from the impeller. In an engaged condition, the impeller rotates with the shaft in a backspin direction. In this way, vanes on the impeller can retard the backspin of the shaft and drive string by attempting to force the lifted fluid column flowing downhole past the impeller back uphole. The retarder can use a pin and slot arrangement or an arrangement of engageable teeth to engage the impeller to the rotation of the shaft.

Meat processing assembly

An improved processing assembly having a meat emulsion pump connected to a stuffing horn. The stuffing horn positioned to fill casings with meat emulsion which form a strand of processed meat that is received by a twister, then a linker, and subsequently deposited on a conveyor.

Vacuum control in a vacuum filler without external air supply

A conveyor system for a filling machine and a method of conveying pasty mass with a corresponding conveyor system and a corresponding filling machine, including a housing with a vacuum opening and a vacuum pump as well as a suction line for generating a vacuum in the conveyor system. A valve means and at least one pressure sensor for measuring the pressure in the suction line and/or in the conveyor system are provided. A control means controls the vacuum in the conveyor system or the suction line, respectively, wherein the cross-section of the suction line is adjusted in response to the measured pressure via the valve means.

Apparatus and method for controlling or limiting rotor orbit in moving cavity motors and pumps

A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator.

Downhole Motors and Pumps with Improved Stators and Methods of Making and Using Same

In one aspect, the disclosure provides an apparatus for use downhole that in one configuration includes a stator including a housing having an inner contour and a liner lining the inner contour of the stator housing, wherein thickness of the liner is non-equidistant around the inner contour of the housing.

Refrigerant compressor

A refrigerant compressor according to the present invention is configured that at least one member constituting an electric element and a compression element is made of a rubber material. This rubber material is nitrile rubber, in which: Condition 1: bound acrylonitrile content is within a range of 35 to 51% by weight; Condition 2: organic compound having carbon atom, which is capable of creating double bond with sulfur atom, nitrogen atom or carbon atom and is also capable of creating single bond with sulfur atom or nitrogen atom, is not used as a vulcanizing accelerator in the process for creating cross-linkage; and Condition 3: no phthalic ester is contained.

Double-screw liquid pump

A double-screw liquid pump is provided, which is applicable to an Organic Rankin Cycle (ORC). The double-screw liquid pump includes a semi-sealed or fully sealed shell, and the shell includes a first cavity and a second cavity isolated from each other. A motor is disposed in the first cavity, and a main body part of a double-screw is disposed in the second cavity. At least one rotor of the double-screw is fixedly connected to a rotor of the motor, and the double-screw rotates through driving of the motor. A liquid refrigerant injection inlet and a refrigerant outlet are disposed on the first cavity, and the motor is cooled through evaporation of a liquid refrigerant; a liquid inlet and a liquid outlet are disposed on the second cavity. In the double-screw liquid pump applied to the ORC provided in the present invention, since a resistance torque of the female rotor is very small, the liquid pump does not wear even when the liquid viscosity is very low, contributing to good reliability, and thereby improving power generation efficiency of the ORC. In addition, the semi-sealed or fully sealed shell can effectively prevent leakage of the refrigerant.

Wiper assembly for a pump

A wiper assembly may be used to prevent wellbore debris from entering an operating region of a pump. The wiper assembly may include a housing, a wiper member, a backing member, and a biasing member. The biasing member may bias the backing member into engagement with the wiper member, and thereby bias the wiper member into engagement with a tapered surface of the housing. The wiper member may include a corresponding tapered surface, which thereby forces the wiper member radially inward into engagement with an operating member of the pump.

ON BOARD INERT GAS GENERATION SYSTEM

An on board inert gas generation system receives cabin air, or air from another relatively low pressure source, passing a portion thereof through an energy recovery turbine to ambient to extract power which is used to provide all, or part of the energy required to drive a positive displacement compressor to co press another portion of cabin air to increase the pressure thereof to be suitable for supply to an air separation module. 1. An on board inert gas generation system for use in an aircraft having a source of low pressure air , the gas generation system comprising:a rotary positive displacement compressor including, an inlet configured to receive a portion of the low pressure air; andan outlet in flow communication with an air separation module.2. The system of wherein the low pressure air is cabin air from a pressurised cabin.3. The system of claim 1 , further comprising:a turbine configured to receive and expand a portion of the low pressure fluid.4. The system of claim 3 , wherein the turbine is drivably connected to the positive displacement compressor.5. The system of claim 3 , wherein the turbine is drivably connected to an electrical generator.6. The system of claim 1 , further comprising:an electric motor drivably connected to the positive displacement compressor.7. The system of claim 5 , further comprising:an electric motor drivably connected to the positive displacement compressor,wherein the electric motor is connectable to receive electrical energy from the generator or an energy storage arrangement associated therewith.8. The system of claim 6 , wherein the electric motor is connectable to receive electrical energy from an aircraft electrical supply.9. The system of claim 7 , further comprising:a power controller,wherein the power controller is configured to receive electrical energy from the generator or an electrical storage arrangement associated therewith,wherein the power controller is configured to receive electrical energy from the aircraft ...

TROCHOID PUMP FOR TRANSFERRING HIGH-VISCOSITY LIQUID UNDER HIGH PRESSURE

Disclosed is a trochoid pump for transferring high-viscosity liquids under high pressure. The trochoid pump includes an idler coupled to an inner through-hole inside a housing to be rotated, a rotor inserted into an inside of the idler, and a shaft configured to rotate the rotor, wherein the idler is provided with an inner toothed groove, into which the rotor is inserted and which has a plurality of projecting teeth, and recessed grooves, which are recessed with a predetermined depth along an outer circumferential surface thereof in a circumferential direction. Unlike an existing gear pump or trochoid pump, the trochoid pump for transferring high-viscosity liquids can reduce a viscous friction force, and can reduce the driving power. 1. A trochoid pump comprising:an idler rotatably coupled to an inner through-hole on an inside of a housing, a rotor inserted into an inside of the idler, and a shaft rotating the rotor,wherein the rotor is inserted into the idler and the idler has an inner toothed groove having a plurality of projecting gear teeth formed thereon, and a recessed groove formed on an outer circumference with a predetermined depth in a circumferential direction.2. The trochoid pump according to claim 1 , wherein the at least one recessed groove is formed on a center portion of the outer circumference of the idler claim 1 , and front and rear circular grooves are formed at front and rear ends that come in contact with an end portion of the rotor on an outer circumference of the idler.3. The trochoid pump according to claim 2 , wherein the front and rear circular grooves are formed to be deeper than the recessed groove.4. The trochoid pump according to claim 1 , wherein the outer circumference of the idler is spaced apart from an inner circumference of the inner through-hole of the housing to form a gap between them.5. The trochoid pump according to claim 1 , wherein the rotor is constructed so that a plurality of gears are formed on an outer circumference ...

Control Of Variable Displacement Vane Pump Used As Scavenge Pump

A system includes a first scavenge oil pump that draws oil from a first draw location within a vehicle according to a first variable displacement associated with the first scavenge oil pump. The first variable displacement is based on a first modified scavenge ratio assigned to the first scavenge oil pump. An oil pump control module determines a first scavenge ratio, determines a first scavenge ratio multiplier based on at least one of vehicle acceleration and vehicle orientation, and applies the first scavenge ratio multiplier to the first scavenge ratio to generate the first modified scavenge ratio. 1. A system comprising:a first scavenge oil pump that draws oil from a first draw location within a vehicle according to a first variable displacement associated with the first scavenge oil pump, wherein the first variable displacement is based on a first modified scavenge ratio assigned to the first scavenge oil pump; andan oil pump control module that determines a first scavenge ratio, determines a first scavenge ratio multiplier based on at least one of vehicle acceleration and vehicle orientation, and that applies the first scavenge ratio multiplier to the first scavenge ratio to generate the first modified scavenge ratio.2. The system of claim 1 , wherein the oil pump control module sets a first duty cycle of a first solenoid associated with the first scavenge oil pump based on the first modified scavenge ratio.3. The system of claim 1 , wherein the vehicle orientation corresponds to at least one of pitch and yaw of the vehicle.4. The system of claim 1 , wherein the first draw location corresponds to a location in an oil pan.5. The system of claim 1 , wherein the oil pump control module determines the first scavenge ratio multiplier using a scavenge ratio multiplier map.6. The system of claim 1 , wherein the oil pump control module determines the first scavenge ratio based on engine speed claim 1 , engine oil temperature claim 1 , and engine load.7. The system of ...

VANE PUMP

A vane pump includes: a rotor; vanes; a cam ring; pump chambers; a suction port; a discharge port; back-pressure chambers; a discharge-side back pressure port configured to guide working fluid that is discharged from the discharge port to the back-pressure chambers; and suction-side back pressure ports configured to guide the working fluid to the back-pressure chambers. The suction-side back pressure ports are formed to be divided into a low-pressure port and a high-pressure port, the low-pressure port being configured to guide the working fluid in the suction port to the back-pressure chambers, and the high-pressure port being configured to guide the working fluid that is discharged from the discharge port to the back-pressure chambers. The high-pressure port is arranged at the forward-side of the low-pressure port in rotating direction of the rotor. 1. A vane pump that is used as a fluid pressure source , comprising:a rotor configured to be rotationally driven;a plurality of slits formed in a radiating pattern so as to open to an outer circumference of the rotor;vanes slidably received in the respective slits;a cam ring that has an inner circumferential cam face with which tip portions of the vanes slidingly contact, the tip portions being end portions of the vanes in direction projecting from the slits;pump chambers defined by the rotor, the cam ring, and the adjacent vanes;a suction port configured to guide working fluid that is to be sucked to the pump chambers;a discharge port configured to guide the working fluid that is discharged from the pump chambers;back-pressure chambers formed in the slits, the back-pressure chambers being partitioned by base-end portions of the vanes, the base-end portions being end portions at the opposite side from the tip portions;a discharge-side back pressure port configured to guide the working fluid that is discharged from the discharge port to the back-pressure chambers in a discharge section in which the pump chambers are in ...

Design and Method to Improve Downhole Motor Durability

Rotor and/or stator designs and methods thereof to improve progressive cavity motor or pump durability. In one or more implementations, the rotor may have a variable outer diameter or variable stiffness along an axial length thereof. The stator may similarly have a variable inner diameter or variable stiffness, which may compliment or diverge from the variable outer diameter or variable stiffness of the rotor. 1. A progressive cavity motor or pump , comprising:a stator with an internal axial bore therethrough, the internal axial bore having an inwardly facing surface with axial lobes arranged and designed to form a stator helical profile; anda rotor with an outer surface having axial lobes arranged and designed to form a rotor helical profile that is at least partially complimentary to the stator helical profile; the rotor being rotationally disposed within the internal axial bore of the stator; the axial lobes of the rotor numbering at least one less than the axial lobes of the stator to form a moving chamber between the rotor and stator; the rotor having a diameter that varies along an axial length thereof, the diameter of the rotor proximate an uphole end portion thereof being no greater than at a downhole end portion thereof.2. The progressive cavity motor or pump of wherein claim 1 ,the diameter of the rotor proximate the downhole end portion thereof is greater than at an uphole diameter.3. The progressive cavity motor or pump of wherein claim 1 ,the diameter of the rotor intermediate the uphole end portion and the downhole end portion is a minimum diameter.4. The progressive cavity motor or pump of claim 3 , wherein claim 3 ,rotor stiffness proximate the minimum diameter is less than elsewhere along the axial length of the rotor.5. The progressive cavity motor or pump of claim 1 , wherein claim 1 ,the rotor is constructed of the same materials at the uphole end portion as at the downhole end portion.6. The progressive cavity motor or pump of wherein claim 1 , ...

LINERS FOR ROTORS AND STATORS

A rotor and/or stator dampening system includes a stator and/or rotor with a liner selected of one or more materials to achieve a desired dampening effect. In one implementation, a progressive cavity motor or pump includes a stator with an internal axial bore therethrough. The stator has a liner along an axial length thereof with an inwardly facing surface defining the internal axial bore therethrough. The liner has a plurality of axial sections with at least two of the plurality of axial sections being constructed of different materials. A compression resistant mechanism, such as a spring or spring-like device, is disposed within at least one of the axial sections of the liner. The progressive cavity motor or pump also includes a rotor that is disposed and is rotatable within the internal axial bore of the stator to form a moving chamber between the rotor and the stator. 1. A progressive cavity motor or pump comprising:a stator with an internal axial bore therethrough, the stator having a liner along an axial length thereof with an inwardly facing surface defining the internal axial bore therethrough, the inwardly facing surface with axial lobes arranged and designed to form a stator helical profile, the liner having a plurality of axial sections, at least two of the plurality of axial sections being constructed of different materials;a rotor with an outer surface having axial lobes arranged and designed to form a rotor helical profile that is a least partially complimentary to the stator helical profile, the rotor being rotationally disposed within the internal axial bore of the stator to form a moving chamber between the rotor and the stator; anda compression resistant mechanism disposed within at least one of the axial sections of the liner.2. The progressive cavity motor or pump of wherein claim 1 ,the compression resistant mechanism is a spring.3. The progressive cavity motor or pump of wherein claim 2 ,an axial gap exists between at least two of the plurality ...

Adaptive self-sealing microfluidic gear pump

A microfluidic pumping system configured to prevent backflow from an outlet of the system toward an inlet of the system. The microfluidic pumping system comprising a gear housing that has an inlet and an outlet and that houses a drive gear, an idler gear and a drive shaft. The system further includes a front end plate that is coupled to a first surface of the gear housing and a rear end plate that is coupled to a second, different surface of the gear housing. Also coupled to the gear housing is a first and second Halbach magnet arrays that is disposed between the front end plate and the rear end plate. The first and second Halbach magnet arrays include one or more solenoids and the first Halbach magnet array is disposed proximate to the drive gear and the second Halbach magnet array is disposed proximate to the idler gear.

Downhole chemical injection method and system for use in esp applications

Provided is a chemical injection pump that is installed below an electric submersible pump. In general, the chemical injection pump is either driven by an electric motor that draws power from the electric submersible pump motor or from energized fluid leaving the electric submersible pump output port. The electric submersible pump provides electric or hydraulic power to run the chemical injection pump. Therefore, no surface chemical injection pump is required and hence less space is needed.

DOWNHOLE CHEMICAL INJECTION METHOD AND SYSTEM FOR USE IN ESP APPLICATIONS

Provided is a chemical injection pump that is installed below an electric submersible pump. In general, the chemical injection pump is either driven by an electric motor that draws power from the electric submersible pump motor or from energized fluid leaving the electric submersible pump output port. The electric submersible pump provides electric or hydraulic power to run the chemical injection pump. Therefore, no surface chemical injection pump is required and hence less space is needed. 1. (canceled)2. A damage resistant apparatus for enhancing production from a well , the apparatus comprising:an electric submersible pump component having a first pump driver assembly;a chemical injection pump component operable to be disposed in the well and having a second pump driver assembly operable independently from the first pump driver assembly, the chemical injection pump component further having an intake port;a capillary tube fluidically connected to the intake port, the capillary tube extending from the intake port to a surface, the capillary tube configured to receive an inhibitor from a tank at the surface;the electric submersible pump component adapted to be connected to the chemical injection pump component. This application is a Continuation Application of and claims the benefit of priority to U.S. patent application Ser. No. 14/736,656, filed on Jun. 11, 2015, which claims priority to U.S. Provisional Application Ser. No. 62/014,214, filed on Jun. 19, 2014, the full disclosure of which is hereby incorporated by reference herein in its entirety.This disclosure relates to production from wells and livening dead wells. More specifically, this disclosure relates to the use of electric submersible pumps (“ESP”) and pressurized chemical injection for improving production rates from wells and livening dead wells.ESPs are widely used in wells. ESPs are often used to increase the production rate of a well or to revive dead wells. Historically, harsh downhole ...

SELF ADJUSTING PUMP FOR ICE CREAM FREEZER

A self adjusting gear pump () for an ice cream freezer and a control unit () for adaptively controlling the closing pressure (PCLOSE) of a pump for an ice cream freezer. The gear pump system comprises a pump casing (), an inlet () for receiving a liquid food product of ice cream mix, an outlet () for transferring the ice cream mix into a freezing cylinder () of the ice cream freezer (), wherein the pump () is closed by supplying a closing air pressure onto a moveable pump cover () of the pump via at least one hole () provided straight through the pump casing (), thereby moving said moveable pump cover () against the star wheel () and a control unit () for supplying a calculated closing air pressure (PCLOSE) to the pump by means of the air pressure regulator (). 1. A control unit for adaptively controlling closing pressure of an inlet gear pump of an ice cream freezer , the inlet gear pump comprising a pump casing , an inlet for receiving a liquid food product of ice cream mix , and outlet for transferring the ice cream mix into a freezing cylinder of the ice cream freezer , the inlet being connected to an impeller driving a star wheel which in turn is connected to the outlet , wherein the pump is closed by supplying a closing air pressure onto a movable pump cover of the pump via at least one hole provided straight through the pump casing , thereby moving said movable pump cover against the star wheel , wherein the control unit is configured to:receive a first measure of liquid food product supply pressure at the inlet of the pump,receive a second measure of liquid food product outlet pressure at the outlet of the pump,calculate a closing air pressure being determined by the differential pressure between the liquid food product outlet pressure and the liquid food product supply pressure across the pump,supply the calculated closing air pressure to the moveable pump cover by means of an air pressure regulator via the at least one hole in the pump casing, thereby ...

METHOD AND KIT FOR GEROTOR REPAIR

An improved repair method and repair kit for gerotor pumps that have become damaged or worn in order to allow the pump to create a sound seal once more. 1. A method for improving gerotor performance comprising:inserting a wear plate within a gerotor assembly;providing a front cover piece which is placed overtop the gerotor; andperforming the above steps without removing a front cover of an engine.2. The method of claim 1 , wherein the wear plate is added to a rear of a gerotor case.3. The method of claim 1 , wherein the wear plate is shaped to conform to a front cover bottom of the engine.4. The method of claim 1 , wherein the wear plate is inserted to engage a lower surface of the gerotor.5. The method of claim 1 , wherein an upper surface of the gerotor engages a lower face of the front cover piece.6. The method of claim 1 , wherein the front cover piece defines openings that correspond to receiving openings in the front cover of the engine.7. The method of claim 1 , wherein the front cover piece has a lower face sized to accommodate a thickness of the wear plate.8. The method of claim 7 , wherein the lower face includes a channel or grove sized to offset the thickness of the wear plate.9. The method of claim 1 , wherein the method is performed without replacing gaskets or adding spacers to the gerotor assembly.10. A method for repairing an existing gerotor assembly in a vehicle comprising:removing a fan shroud, belt, fan clutch, and fan assembly from an engine;removing a harmonic balancer from the engine;removing a gerotor oil pump cover;removing a gerotor;removing a crankshaft seal wear ring;installing a gerotor wear plate;reinstalling the crankshaft seal wear ring;reinstalling the gerotor;installing a front cover piece that accommodates the wear plate;reinstalling the harmonic balance; andreinstalling the fan shroud, belt, fan clutch, and fan assembly.11. The method of wherein the gerotor assembly is repaired without removing an engine front cover.12. The ...

FUEL PUMP

An outer gear and an inner gear expand and contract volume of pump chambers formed between both the gears, and rotate to suction fuel into the pump chambers and then discharge fuel from the pump chambers sequentially. The inner gear includes an insertion hole that is depressed along its axial direction. A joint member includes a main body portion that is fitted to a rotary shaft, a foot portion that extends from the main body portion along the axial direction and is inserted in the insertion hole with a clearance therebetween, and a protruding portion that protrudes from the foot portion toward a rotation progress side of the inner gear and has its width in the axial direction further narrowed toward a top portion of the protruding portion. 1. A fuel pump comprising:an outer gear that includes a plurality of internal teeth;an inner gear that includes a plurality of external teeth and is eccentric from the outer gear in an eccentric direction to be engaged with the outer gear;a pump housing that rotatably accommodates the outer gear and the inner gear;an electric motor that includes a rotary shaft which is rotary-driven; anda joint member that connects together the inner gear and the rotary shaft, wherein:the outer gear and the inner gear expand and contract volume of a plurality of pump chambers formed between both the gears, and rotate to suction fuel into the plurality of pump chambers and then discharge fuel from the plurality of pump chambers sequentially;the inner gear includes an insertion hole that is depressed along its axial direction; and a main body portion that is fitted to the rotary shaft;', 'a foot portion that extends from the main body portion along the axial direction and is inserted in the insertion hole with a clearance therebetween; and', 'a protruding portion that protrudes from the foot portion toward a rotation progress side of the inner gear and has its width in the axial direction further narrowed toward a top portion of the protruding ...

Wiper Ring Assembly with Energizing Member

A downhole pump is used for a reciprocating pump system having a rod string disposed in a tubing string. A barrel of the pump is disposed, and a plunger of the pump coupled to the rod string is movably disposed in the barrel. The plunger has an external surface disposed at an annular gap relative to the barrel's internal surface. The external surface has circumferential grooves defined thereabout that hold wipers. An inner ring of the wipers composed of a swellable material is engaged in the one or more circumferential grooves, while an outer ring composed of a second material is disposed about the inner ring. The swellable material of the inner ring energizes the outer ring in slideable engagement with the internal surface of the barrel. 1. A downhole pump for a reciprocating pump system having a rod string disposed in a tubing string , the pump comprising:a barrel disposed in the tubing string and having an internal surface;a plunger coupled to the rod string and movably disposed in the barrel, the plunger having an external surface disposed at an annular clearance relative to the internal surface, the external surface having one or more circumferential grooves defined thereabout; and an inner ring composed of a swellable material and engaged in the one or more circumferential grooves, and', 'an outer ring composed of a second material and disposed about the inner ring, the swellable material of the inner ring energizing the outer ring across the annular clearance into slideable engagement with the internal surface of the barrel., 'one or more wipers disposed in the one or more circumferential grooves on the external surface of the plunger, each of the one or more wipers comprising2. The pump of claim 1 , wherein the swellable material is selected from the group consisting of elastomer claim 1 , ethylene propylene diene M-class rubber (EPDM) claim 1 , ethylene propylene copolymer (EPM) rubber claim 1 , styrene butadiene rubber claim 1 , natural rubber claim 1 , ...

ELECTRIC OIL PUMP

An electric oil pump includes a motor including a motor shaft, a pump assembly including a vane pump driven by the motor to suction and discharge oil, and an inverter to drive the motor. The motor includes a rotor, a stator on a side outward from the rotor in a radial direction, and a motor housing containing the rotor and the stator. The motor housing includes a suction port through which the vane pump suctions oil from outside, and a discharge port through which the vane pump discharges oil to outside. The motor housing includes flat surface portions in a portion of an outer periphery thereof. The suction port and the discharge port are located in a first surface of side surfaces which are the flat surface portions of the motor housing and are parallel or substantially parallel to the axial direction. 112-. (canceled)13. An electric oil pump comprising:a motor including a motor shaft extending along a central axis extending in an axial direction;a pump assembly including a vane pump which is on one side of the motor in the axial direction and is driven by the motor via the motor shaft to suction and discharge oil; andan inverter which is on another side of the motor in the axial direction to drive the motor; wherein a rotor which is rotatable together with the motor shaft;', 'a stator which is on a side outward from the rotor in a radial direction; and', 'a motor housing which houses the rotor and the stator;, 'the motor includes a suction port through which the vane pump suctions oil from outside; and', 'a discharge port through which the vane pump discharges oil to outside;, 'the motor housing includesthe motor housing includes flat surface portions in a portion of an outer peripheral shape thereof; andthe suction port and the discharge port are provided in a first surface of side surfaces which are the flat surface portions of the motor housing and are parallel or substantially parallel to the axial direction.14. The electric oil pump according to claim 13 , ...

Mounting structure for electric oil pump

A mounting structure for electric oil pump is provided to allow the electric oil pump to be mounted without through a communication pipe. The electric oil pump includes a pump unit having an inscribed gear pump, and a motor unit disposed adjacent to the pump unit and having a sensorless brushless DC motor for rotating the inscribed gear pump. A transmission accommodates the electric oil pump and includes a transmission case having an oil pan. The electric oil pump is attached to the transmission case with at least a through hole for supplying working oil to the pump unit being submerged in the working oil reserved in the oil pan.

PROGRESSIVE CAVITY PUMP AND METHOD FOR OPERATING SAME IN BOREHOLES

A method for operating a progressive cavity pump wherein the stator has at least first and second active stator sections that are at different locations on the stator, comprising inserting a first rotor having a first active rotor section that is aligned with the first active stator section, and rotating the first rotor relative to the first active stator section such that the aligned first active rotor and stator sections generate a pumping force. Subsequently, the first rotor is removed and a second rotor is inserted having a second active rotor section that is aligned with the second active stator section, and rotating the second rotor relative to the second active stator section such that the aligned second active rotor and stator sections generate a pumping force. 18-. (canceled)9. A progressive cavity pump assembly for operation in a borehole , comprising:(a) a unitary stator comprising at least first and second active stator sections at different locations on the stator;(b) a first rotor having a first active rotor section that is configured for alignment with the first active stator section when the first rotor is mounted at a selected location relative to the stator; and(c) a second rotor configured for insertion into the stator independently of the first rotor, and having a second active rotor section that is configured for alignment with the second active stator section when the second rotor is mounted at the selected location relative to the stator, the first and second rotors configured for separate and serial operation within the stator.10. The pump assembly as claimed in further comprising a tubing joint mountable to a bottom end of the stator claim 9 , the tubing joint having a tag bar.11. The pump assembly as claimed in wherein the first rotor comprises a slim rod having a bottom end coupled to the first active rotor section claim 10 , and a top end connectable to a rod string.12. The pump assembly as claimed in wherein the second rotor comprises a ...

Drilling motor having sensors for performance monitoring

An apparatus includes a sensor assembly disposable in a drill string proximate a drilling motor. The sensor assembly has a first pressure sensor in fluid communication with an upstream side of a rotor in the drilling motor, a second pressure transducer in fluid communication with a downstream side of the rotor and a rotational speed sensor coupled to the rotor. A processor is in signal communication with the first pressure transducer, the second pressure transducer and the rotational speed sensor.

Oil Well Pump Apparatus

An oil well pumping apparatus for pumping oil from a well to a wellhead provides a tool body that is sized and shaped to be lowered into the production tubing string of the oil well. A working fluid is provided that can be pumped into the production tubing. A prime mover is provided for pumping the working fluid. A flow channel into the well bore enables the working fluid to be circulated from the prime mover via the production tubing to the tool body at a location in the well and then back to the wellhead area. A pumping mechanism is provided on the tool body, the pumping mechanism including upper and lower spur gear or gears. The upper spur gear is driven by the working fluid. The lower spur gear is rotated by the first spur gear. The upper and lower spur gears are connected with a common shaft. If upper pairs and lower pairs of spur gears are employed, each upper and lower gear are connected via a common shaft. The tool body has flow conveying portions that mix the working fluid and the produced oil as the oil is pumped. The pumping mechanism transmits the commingled fluid of oil and working fluid to the wellhead area where they are separated and the working fluid recycled. 1. An oil pump apparatus for pumping oil from an oil well having a wellhead and a well bore with casing and a production tubing string , comprising:a) a tool body that is sized and shaped to be lowered into the production tubing string of an oil well;b) a casing and production tubing;c) a working fluid that can be pumped into the production tubing;d) a prime mover for pumping the working fluid;e) a flow channel in the well bore that enables the working fluid to be circulated from the prime mover via the production tubing to the tool body at a location in the well and then back to the wellhead area;f) a pumping mechanism on the tool body, the pumping mechanism including a first impeller that is driven by the working fluid and a second impeller that is rotated by the first impeller, the second ...

Pump System

A rotary pump may include a rotary cover and a rotary housing that may be engaged with one another during operation. A ring gear may be positioned within an internal portion of the rotary cover and rotary housing, and an inner gear may be positioned within a portion of the ring gear. The rotary pump may be configured with a pressure relief portion that may be in fluid communication with an outlet of the pump. The rotary pump may be configured such that pressurized fluid passing through the pressure relief portion is routed to an inlet of the rotary pump. 1. A rotary pump comprising: i. an outlet cavity formed in an interior of said rotary housing;', 'ii. an outlet in fluid communication with said outlet cavity;', 'iii. a pressure relief portion in fluid communication with said outlet cavity;', 'iv. a pressure relief discharge in fluid communication with said pressure relief portion;', 'v. a pressure relief cavity formed in an interior of said rotary housing, wherein said pressure relief cavity is in fluid communication with said pressure relief discharge;', 'vi. a return channel in fluid communication with said pressure relief cavity;', 'vii. an inlet in fluid communication with said return channel;, 'a. a rotary housing configured for selective engagement with an engine, said rotary housing comprisingb. a ring gear positioned in said interior of said rotary housing;c. an inner gear positioned within said ring gear; and,d. a rotary cover that is selectively engageable with said rotary housing so as to cover said interior of said rotary housing.2. The rotary pump according to wherein said rotary pump is further defined as being engaged with an internal combustion engine.3. The rotary pump according to wherein said rotary pump is further defined as receiving rotational energy from a crankshaft of said internal combustion engine.4. The rotary pump according to wherein said internal combustion engine is further defined as including a vacuum pump in fluid communication ...

ELECTRIC PUMP UNIT

An electric pump unit is provided that ensures capability for lubricating a plain bearing and in which a lubricating oil passage is formed with a simple structure. This pump unit includes: a pump in which a rotor placed in a pump chamber of a pump housing rotates; and an electric motor having a motor shaft coupled to the rotor. The motor shaft is rotatably supported by a cylindrical plain bearing disposed in the pump housing. An oil seal is provided on the opposite side to the pump chamber with the plain bearing between so as to be located between the pump housing and the motor shaft. Oil supply grooves are formed in an inner peripheral surface of the plain bearing so as to extend through the plain bearing in an axial direction. 1. An electric pump unit , comprising:a pump that sucks and discharges oil as a rotor placed in a pump chamber of a pump housing rotates while in sliding contact with wall surfaces at both axial ends of the pump chamber; andan electric motor that has a motor shaft coupled to the rotor and drives the pump; whereinthe motor shaft is rotatably supported by a cylindrical plain bearing disposed in the pump housing,a seal member is provided at a position on an opposite side to the pump chamber with the plain bearing between so as to be located between the pump housing and the motor shaft, andan oil supply groove is formed in an inner peripheral surface of the plain bearing so as to extend through the plain bearing in an axial direction.2. The electric pump unit according to claim 1 , whereina suction port through which the oil is sucked and a discharge port through which the oil is discharged are formed in the wall surfaces at the both axial ends of the pump chamber so as to be in a shape of an elongated hole that is longer in a circumferential direction, anda pair of the oil supply grooves are provided so as to be located on a straight line extending in a radial direction and being perpendicular to a straight line which connects a middle position ...

VARIABLE DISPLACEMENT PUMP

A variable displacement pump includes: a pump constituting section; a movable member; a first control hydraulic chamber; a second control hydraulic chamber; a control mechanism arranged to be actuated by receiving a control hydraulic pressure which is the discharge pressure on a downstream side of the discharge portion, through a single control passage formed within the engine, and to control a supply and a discharge of the discharge pressure with respect to the second control hydraulic chamber; and a switching mechanism arranged to switch a connection and a disconnection between the control passage and the control mechanism. 1. A variable displacement pump comprising:a pump constituting section arranged to be driven and rotated by an engine, to vary volumes of a plurality of pump chambers, and thereby to discharge an oil sucked from a suction portion from a discharge portion;a movable member arranged to be moved to vary variation amounts of the volumes of the pump chambers;an urging mechanism provided with a set load, and arranged to urge the movable member in a direction in which the variation amounts of the volumes of the plurality of the pump chambers are increased;a first control hydraulic chamber arranged to receive a discharge pressure from the discharge portion, and thereby to act a force to the movable member in a direction in which the variation amounts of the volumes of the plurality of the pump chambers are decreased;a second control hydraulic chamber arranged to receive the discharge pressure from the discharge portion, and thereby to act a force to the movable member in a direction in which the variation amounts of the volumes of the plurality of the pump chambers are increased;a control mechanism arranged to be actuated by receiving a control hydraulic pressure which is the discharge pressure on a downstream side of the discharge portion, through a single control passage formed within the engine, and to control a supply and a discharge of the ...

SUBMERSIBLE FUEL OIL SET

A submersible fuel oil apparatus includes a base; at least one platform supported above the base and having a top surface, an underside surface and an aperture therethrough; a submersible motor mounted on the top surface of the platform and having a motor shaft extending vertically downward through the aperture in the platform; a fuel oil pump supported underneath the platform and having a pump shaft extending vertically upward, a pump inlet into which fuel oil is adapted to be delivered, and a pump outlet from which fuel oil is adapted to be pumped, the pump positioned such that the motor shaft and the pump shaft are aligned; a coupler connecting the motor shaft and pump shaft to each other; inlet piping connected to the pump inlet; and outlet piping connected to the pump outlet. 1. Submersible fuel oil apparatus , comprising:a. a baseb. at least one platform supported above said base and having (i) a top surface, (ii) an underside surface and (iii) an aperture therethrough;c. a submersible motor supported by one of said top surface and said underside surface of said platform and having a vertically oriented motor shaft;d. a fuel oil pump supported by said platform on a side of said platform opposite said motor and having a (i) a vertically oriented pump shaft, (ii) a pump inlet into which fuel oil is adapted to be delivered, and (iii) a pump outlet from which fuel oil is adapted to be pumped, said pump and motor positioned such that said motor shaft and said pump shaft are aligned, one of said motor shaft and pump shaft extending through said aperture in said platform;e. a coupler connecting said motor shaft and pump shaft to each other;f. inlet piping connected to said pump inlet; andg. outlet piping connected to said pump outlet.2. The submersible fuel oil apparatus of further comprising support brackets securely connecting said outlet piping to said base.3. The submersible fuel oil apparatus of further comprising a mounting bracket having an upper connection ...

ROTARY COMPRESSOR

A rotary compressor includes a cylinder with a vane slot and a suction port. A vane is slidably disposed in the vane slot. The suction port guides fluid to a compression chamber at one circumferential end of the vane slot. The suction port may be formed in a recessed manner in a radial direction such that at least an end of the suction port in contact with an inner circumferential surface of the cylinder forms a slot shape extending between opposite axial side surfaces of the cylinder. A circumferential length of the suction port is reduced from conventional suction ports as a result of the slot configuration, thereby advancing the compression start angle, and a partition wall portion between the suction port and the vane slot may have elasticity, thereby suppressing close contact between the vane and the vane slot. 1. A rotary compressor , comprising:a cylinder having an annular shape;at least two plate members provided on upper and lower axial side surfaces of the cylinder, respectively, and forming a compression chamber together with the cylinder;a rolling piston provided inside the compression chamber, the rolling piston being coupled to a rotation shaft; anda vane slidably disposed in a vane slot formed in the cylinder such that contact between the vane and an outer circumferential surface of the rolling piston divides the compression chamber into a suction chamber and a discharge chamber,wherein the cylinder comprises a suction port configured for guiding fluid to the compression chamber at one circumferential side of the vane slot, andthe suction port is recessed in a radial direction such that at least an end of the suction port in contact with an inner circumferential surface of the cylinder forms a slot shape extending between the upper and lower axial side surfaces of the cylinder.2. The rotary compressor of claim 1 , wherein the suction port is formed in a slot shape from an outer circumferential end to an inner circumferential end in contact with the ...

High pressure pumping system

One or more techniques and/or systems are disclosed for a pump technology that provides for more effective and efficient transfer of liquids, such as petroleum products and components, to and through pipelines. Such a technology can comprise a type of external gear pump that creates higher flow, resulting in higher pressures in the pipeline, to move the liquids, while providing for longer pump life, simpler and less maintenance, and fewer undesired conditions, with a smaller footprint, in a cost-effective system.

VACUUM PUMP

A vacuum pump () includes a pump casing () having an inlet port (), an outlet port (), and pump chambers (-) defined therein, rotational shafts having opposite ends rotatably supported by bearings () on the pump casing () and extending longitudinally in the pump casing (), and rotors (-) housed in the pump chambers (-) and coupled to the rotational shafts () for rotation in unison with the rotational shafts (). The pump casing () has an atmosphere-vented compartment () defined therein which is held in fluid communication with the outlet port () of the pump casing () and vented to the atmosphere. 1. A vacuum pump comprising:a pump casing having an inlet port, an outlet port, and a pump chamber defined therein;a rotational shaft having opposite ends rotatably supported by bearings and extending longitudinally in the pump casing; anda rotor housed in the pump chamber and coupled to the rotational shaft for rotation in unison with the rotational shaft;wherein the pump casing has an atmosphere-vented compartment defined therein which is held in fluid communication with the outlet port of the pump casing and vented to the atmosphere.2. A vacuum pump according to claim 1 , wherein the pump chamber comprises a plurality of pump chambers held in fluid communication with each other claim 1 , and the rotor comprises a plurality of rotors disposed respectively in the pump chambers for rotation in unison with the rotational shaft.3. A vacuum pump according to claim 1 , further comprising:a side panel disposed on an end wall of the pump casing, the rotational shaft extending through the side panel, the side panel having a purge gas passage defined therein for supplying a purge gas to a portion of the rotational shaft which is disposed in the side panel.4. A vacuum pump according to claim 2 , further comprising:a side panel disposed on an end wall of the pump casing, the rotational shaft extending through the side panel, the side panel having a purge gas passage defined therein ...

PUMP ARRANGEMENT

Pump arrangement () for conveying a fluid, with a housing (), with a first rotatably mounted pump member (), and with a second rotatably mounted pump member (), wherein a fluid-conveying effect is produced by means of a relative rotary movement between the first and the second pump member (), wherein the first pump member () can be driven by an electric motor () which is arranged concentrically to the first pump member () and which has a stator () and a rotor (), wherein the rotor () is fixed to the first pump member () and wherein the pump arrangement () is constructed in such a way that fluid is present in an annular gap () between the rotor () and the stator (). In this case, the pump arrangement has temperature control means for heating the fluid in the annular gap (). 1. A pump arrangement for delivering a fluid ,comprising a housing, a first rotatably mounted pump member, anda second rotatably mounted pump member, wherein a fluid delivering effect is produced by means of a relative rotary movement between the first and the second pump member, wherein the first pump member can be driven by an electric motor which is arranged concentrically with the first pump member and which has a stator and a rotor, wherein the rotor is fixed on the first pump member, wherein the pump arrangement is constructed in such a way that fluid is present in an annular gap between the rotor and the stator, and wherein the pump arrangement includes temperature control means for heating the fluid in the annular gap.2. The pump arrangement as claimed in claim 1 , wherein the temperature control means comprises the feature that the rotor has a lower thermal conductivity than the first pump member.3. The pump arrangement as claimed in claim 1 , wherein the stator has at least one stator pole on which an electric stator winding is arranged claim 1 , and wherein the temperature control means comprises the feature that the stator pole directly adjoins the annular gap.4. The pump arrangement ...

Submersible Integrated Electric Pump

A submersible electric pump includes a housing adapted to be submerged within a fluid to be pumped having apertures extending therethrough. An electric motor stator is positioned within the housing in communication with the apertures and is adapted to be in contact with the fluid. Inner and outer pump rotors are positioned within the housing in meshed engagement with one another to pump fluid when rotated. A plurality of permanent magnets are fixed for rotation with the outer rotor. 1. A submersible electric pump comprising:a first shell having a substantially planar first pump surface;a second shell fixed to the first shell defining a housing and having a substantially planar second pump surface spaced apart from and extending substantially parallel to the first pump surface;a gerotor pump having an inner rotor and an outer rotor, each rotor having opposite faces positioned adjacent the first and second pump surfaces;a rotor shaft including spaced apart shoulders engaging each of the first and second shells to define a predetermined spacing between the first and second pump surfaces;an electric motor stator positioned with the housing; anda plurality of permanent magnets fixed for rotation with the outer rotor, the magnets being positioned proximate the stator.2. The electric pump of claim 1 , wherein a first end of the rotor shaft is fixed to the first shell and a second end of the rotor shaft is fixed to the second shell to resist forces generated during pumping from increasing the predetermined spacing between the first and second pump surfaces.3. The electric pump of claim 2 , further including a threaded fastener extending through an aperture in the first shell threadingly engaging the rotor shaft.4. The electric pump of claim 1 , wherein the outer rotor includes an outer cylindrical surface and one of the first and second shells includes an inner cylindrical surface claim 1 , the outer cylindrical surface being supported for rotation by the inner cylindrical ...

Vacuum sewage system with monitoring system and method of use

A vacuum sewage system includes a collection station, a vacuum pump, a sewage pump, a collection tank, a control system, a valve pit, a first conduit extending from the collection station to the valve pit, a second conduit extending from the valve pit and terminating in a closed end, a valve located in the valve pit for selectively permitting sewage and waste water to flow from the valve pit toward the collection station upon activation of the valve, an electric air admission controller or a solenoid for selectively opening and closing the valve, a first sensor associated with the electronic air admission controller or the solenoid and a second sensor located adjacent the closed end of the second conduit. The system may be utilized to monitor and remedy various undesirable operating conditions in the system and to perform routines to increase operating efficiency of the system.

TWO-LIQUID-TYPE, DOUBLE-ROW STRUCTURED TROCHOID PUMP FOR TRANSFERRING HIGH-VISCOSITY LIQUIDS UNDER HIGH PRESSURE

Disclosed is a two-liquid-type, double-row structured trochoid pump for transferring high-viscosity liquids under high pressure. A front body, a first housing, a center body, a second housing, and a rear body are successively coupled to form an outer body, and a first idler is coupled to an inside of the first housing. A first rotor is inserted into the first idler, a second idler is coupled to an inside of the second housing, and a second rotor is inserted into the second idler. A shaft is coupled to penetrate the front body, the first housing, the center body, the second housing, the rear body, and the first and second rotors, and the shaft is connected to an external electric motor. Accordingly, transfer equipment can be reduced in size and weight through reduction of an attachment and a controller, which constitute the transfer equipment, into one device. 1. A trochoid pump comprising:a front body having a first discharge port formed on an outer surface thereof, a first discharge flow path formed on an inside thereof to communicate with the first discharge port, a first through-hole formed in the center thereof, and a plurality of fastening holes formed on a circumference of the first through-hole;a first housing coupled to the front body and having both open ends and a path formed in the center thereof;a first idler rotatably inserted into the path of the first housing and having a gear groove formed on an inside thereof;a first rotor inserted into the gear groove of the first idler with a diameter that is smaller than the gear groove, and having a plurality of gears formed on an outer periphery thereof;a center body coupled to the first housing through one side thereof and having a second through-hole formed in the center thereof to coincide with the first through-hole;a second housing coupled to the other side of the center body and having both open ends and a path formed in the center thereof;a second idler rotatably inserted into the path of the second ...

Intelligent oil extraction system using all-metal screw pump

An intelligent oil extraction system using an all-metal screw pump includes: the all-metal screw pump, an oil collecting unit (43), and a steam generating unit (45); wherein an internal threaded curve surface and an external threaded curve surface of the all-metal screw pump are both tapered spiral structures with equal tapers; the oil extraction system comprises a lifting mechanism and monitoring and control mechanism; the monitoring and control mechanism comprises: a controller (34), a torque sensor (35), a flow sensor (36), a pressure sensor (39), a liquid level detector (38), and a backup power source (37); the controller (34) is electrically connected to the torque sensor (35), the flow sensor (36), the pressure sensor (39), the liquid level detector (38), the backup power source (37), a drive motor (48), a servo motor (33), a first valve and a second valve. The present invention can solve the technical problems such as short service life, high energy consumption, low pump efficiency, sand jam, and low intelligence of the conventional metal screw pumps.

Quick Disconnect Pump

A quick disconnect pump assembly is disclosed. The pump assembly includes a housing with inlet and outlet ports, an elongate slot, and a retainer channel. A sliding lock moves within the slot between a locked position and an unlocked position. The sliding lock includes inlet and outlet port openings and a sliding lock retainer opening. The inlet and outlet port openings each engage and retain a removable fitting when the sliding lock is in the locked position, but do not engage or retain the removable fitting when the sliding lock is in the unlocked position. The pump assembly also includes a sliding lock retainer which passes through the sliding lock retainer opening to prevent removal of the sliding lock from the elongate slot. A fluid pump and a beverage dispenser utilizing the pump assembly are also disclosed. 1. A quick disconnect pump assembly comprising:a pump housing having an inlet port passage and an outlet port passage, an elongate slot for receiving a sliding lock member, and a retainer channel disposed between the inlet port passage and an outlet port passage;a sliding lock member received within the elongate slot and movable within the slot between a locked position and an unlocked position, the sliding lock member having an inlet port opening, an outlet port opening, and a sliding lock retainer opening,wherein the inlet port opening and the outlet port opening each have a first, narrower opening portion which engages and retains a removable fitting when the sliding lock member is in the locked position and a second, wider opening portion which does not engage or retain the removable fitting when the sliding lock member is in the unlocked position; anda sliding lock retainer disposed within the retainer channel and passing through the sliding lock retainer opening to prevent removal of the sliding lock member from the elongate slot.2. The quick disconnect pump assembly of claim 1 , wherein the sliding lock retainer comprises a spring disposed within ...

LUBRICANT VANE PUMP

A lubricant vane pump for providing a pressurized lubricant for an internal combustion engine includes a pump housing, a pump chamber, a shiftable control ring comprising a pressure-relief-valve, a pump rotor, a pretensioning element which pushes the control ring into a high pumping volume position, a control chamber, and a pump outlet cavity fluidically connected to the control chamber. The pump chamber comprises pump compartments which rotate from a charge to discharge zone. The control ring envelops the pump chamber. The pump rotor comprises radially slidable vanes which rotate in the control ring to provide the pump chamber with the pump compartments. A high lubricant pressure in the control chamber moves the control ring into a low pumping volume direction against the pretensioning element. The pressure-relief-valve of the control ring connects or disconnects the control chamber with one of the pump compartments between the charge zone and the discharge zone. 19-. (canceled)10. A lubricant vane pump for providing a pressurized lubricant for an internal combustion engine , the lubricant vane pump comprising:a pump housing;a pump chamber arranged in the pump housing, the pump chamber comprising a plurality of pump compartments configured to rotate from a charge zone to a discharge zone;a shiftable control ring comprising a pressure-relief-valve arranged in the pump housing, the shiftable control ring being configured to envelop the pump chamber;a pump rotor arranged in the pump housing, the pump rotor comprising radially slidable vanes which are configured to rotate in the shiftable control ring so as to provide the pump chamber with the plurality of rotating pump compartments;a pretensioning element configured to push the shiftable control ring into a high pumping volume position;a control chamber, wherein a high lubricant pressure in the control chamber moves the shiftable control ring into a low pumping volume direction against the pretensioning element; anda ...

Slurry Pump

In a rotor in rotor configuration, a pump has inward projections on an outer rotor and outward projections on an inner rotor. The outer rotor is driven and the projections mesh to create variable volume chambers. The outer rotor may be driven in both directions. In each direction, the driving part (first inward projection) of the outer rotor contacts a sealing surface on one side of an outward projection of the inner rotor, while a gap is left between a sealing surface of the other side of the outward projection and a second inward projection. The gap may have uniform width along its length in the radial direction, while in a direction parallel to the rotor axis it may be discontinuous or have variable size to create flow paths for gases. 1. A fluid transfer device comprising:a housing having an inward facing surface;an outer rotor secured for rotation about an outer rotor axis that is fixed in relation to the housing, the outer rotor having inward projections, the outer rotor being arranged to be driven in operation by a drive shaft;an inner rotor secured for rotation about an inner rotor axis that is fixed in relation to the housing, the inner rotor axis being inside the outer rotor, the inner rotor having outward projections, the outward projections in operation meshing with the inward projections to define variable volume chambers as the inner rotor and outer rotor rotate; fluid transfer passages in a portion of the housing to permit flow of fluid into and out of the variable volume chambers; andeach outward projection having a first sealing surface and a second sealing surface circumferentially opposed to each other for respective engagement with corresponding sealing surfaces of adjacent inward projections such that in an operational configuration in which the outer rotor is driven in a first direction, the first sealing surface seals against a first corresponding inward projection with a first gap between at least part of the second sealing surface and a ...

SYSTEMS AND DEVICES FOR PUMPING AND CONTROLLING HIGH TEMPERATURE FLUIDS

The disclosed technology includes pumps, pipes, valves, seals, and systems for pumping and controlling high temperature fluids, such as liquid tin, at temperatures of between 1000-3000° C. The systems and device may be partially or entirely constructed using brittle materials, such as ceramics, that are capable of withstanding extreme heat without significantly degrading, and may be secured using components made of refractory metals, such as tungsten. The systems and devices may utilize static and dynamic seals made from brittle materials, such as graphite, to enable the high temperature operation of such pumps, pipes, valves, and systems without leakage. 1. A pump for pumping at least one of liquids and gases , the pump being formed at least in part from at least one brittle material and configured to operate at temperatures between 500° C. and 3000° C.2. The pump of claim 1 , comprised of a first brittle material and having a seal comprised of a second brittle material.3. The pump of claim 2 , further comprising stationary components sealed by a static seal comprised of the second brittle material and moveable components sealed with a dynamic seal comprised of the second brittle material.4. The pump of comprising: a closed face having an aperture for receiving a shaft;', 'an open face;', 'a chamber disposed between the closed face and the open face, the chamber housing at least a first gear, the first gear being attached to the shaft; and', 'a first plurality of apertures for receiving securing members;, 'a pump body made of the first brittle material, the pump body comprisinga first plate positioned externally to the closed face of the pump body, the first plate being made of the first brittle material or a refractory metal and having an aperture for receiving the shaft and a second plurality of apertures for receiving securing members;a plurality of securing members that are disposed in the first and second plurality of apertures to secure the first plate to the ...

Rotary Piston Pump With Optimised Inlets And Outlets

A rotary piston pump for the delivery of liquids and for the delivery of liquids containing solids. The rotary piston pump includes a pump housing which is provided with an inlet and an outlet. The pump housing includes a lining. Disposed in the pump housing, or inside the lining, are at least two counter-rotating rotary pistons, which form pump spaces during their rotation. During the rotational movement, the rotary pistons are sealed against one another, against the pump housing and against the lining. Disposed in the pump housing and/or in the lining, in the spatial vicinity of the inlet and/or the outlet, are means with which the pulsation can be reduced or even completely prevented. 1. A rotary piston pump comprising a pump housing which is provided with an inlet and an outlet , the pump housing comprising a lining and there are disposed in the pump housing , or inside the lining , at least two counter-rotating rotary pistons , which form pump spaces during their rotation , wherein the rotary pistons are sealed against one another and against the pump housing , and against the lining , at least two recesses are disposed in each pump space in the pump housing and/or in the lining , wherein the recesses are disposed in the spatial vicinity of the inlet and/or the outlet , the pump housing and/or the lining comprising reinforcements of the lining respectively in the region of the inlet and in the region of the outlet , by means of which reinforcements a cross-sectional reduction is achieved , and that the cross-section of the inlet and the outlet widens from the reinforcements towards ends and that the reinforcements have a wrap angle of more than 180 degrees.2. The rotary piston pump according to claim 1 , the at least two recesses disposed in each pump space comprising four recesses disposed in each pump space claim 1 , the recesses always being disposed in pairs.3. The rotary piston pump according to claim 1 , a pulsation of the rotary piston pump being ...

Ground drive apparatus for progressive cavity pumps

A ground drive apparatus for a progressive cavity pump in which a rotor of the pump is connected to a rod string and in which the rod string is connected to the polished rod. The ground drive apparatus has a motor with a hollow shaft, an upper sealing structure positioned above the motor and extending around the polished rod, and a well sealing structure positioned below the motor so as to the selectively in sealing and clamping relationship with the polished rod. The hollow shaft has an inner diameter greater than an outer diameter of the rotor and the rod string. The upper sealing structure includes a stationary sealing cap, a rotary sealing bushing extending around the stationary sealing cap, and a sealing ring interposed between the stationary sealing cap and the rotary sealing bushing. The well sealing structure has a housing with a piston slidably mounted in the housing.

Scroll compressor

A diameter of a main bearing member 12 m is defined as Dm, a length thereof is defined as Lm, a diameter of the eccentric bearing member 11 e is defined as De and a length thereof is defined as Le. A ratio (=Lm/Dm) of the length and the diameter of the main bearing member 12 m and a ratio (=Le/De) of the length and the diameter of the eccentric bearing member 11 e are set to Le/De≦Lm/Dm≦1. Therefore, contact at edge portions of both ends of the eccentric bearing member 11 e does not occur, and it is possible to prevent contact at edge portions of both ends of the main bearing member 12 m even if the main shaft 13 m inclines, and to reduce a viscosity loss caused by oil 9 a. Hence, the present invention provides a scroll compressor securing reliability of the bearing members 12 m, 11 e and 16 s and having high efficiency.

Immersion Pump and Method for Assembling an Immersion Pump

An immersion pump is provided, the pump having an integral housing with an inlet opening on an intake side, an outlet opening on a delivery side, a passage for electrical lines, an electronic unit for processing power and optionally information signals, an electric motor, a pressure chamber and a pump unit. The electronic unit, the electric motor, the pressure chamber and the pump unit may be pre-assembled to an insert, with the pre-assembled insert being supported on one end of the housing. An axial clamping and/or fastening system, in particular a tapered locking arrangement, is provided on the opposite end of the housing. 110-. (canceled)11. A submersible pump , comprising:a casing having a suction-side inlet opening, a pressure-side outlet opening and a through-passage for electric lines;an electronics unit;an electric motor;a pressure chamber;a pump unit; anda securing assembly, the electric motor is arranged to drive the pump unit,', 'the electronics unit at least one of controls electric power for driving the electric motor and processes information signals,', 'the electronics unit, the electric motor, the pressure chamber and the pump unit are configured for assembly into a preassembled insert configured to be introduced into the casing and supported at a first end of the casing, and', 'the securing assembly is at least one of an axial clamping and fastening system configured to be located at a second end of the casing opposite the first end, and is arranged to secure and apply a prestress to the preassembled insert in the casing., 'wherein'}12. The submersible pump as claimed in claim 11 , wherein the securing assembly is releasable from the casing.13. The submersible pump as claimed in claim 12 , wherein that the securing assembly includes a taper lock clamping bushing.14. The submersible pump as claimed in claim 11 , wherein at least one of the electronics unit claim 11 , the electric motor claim 11 , the pressure chamber and the pump unit is provided ...

Pump Assembly Having an Axial-Flux Electric Drive

The invention relates to a pump assembly, at least comprising a first housing, in which at least one first drive means for conveying a fluid is rotatably mounted, wherein a first drive shaft of the first drive means extends at least through a first side wall of the first housing in an axial direction; wherein, outside of the first housing, at least one first rotor of a first axial-flux electric drive is arranged on the first drive shaft, wherein the first axial-flux electric drive has only one stator.

PUMP

An oil pump includes: an annular stator () having coils (); a cylindrical outer rotor () having a plurality of permanent magnets (); an inner rotor () positioned eccentrically to an inner peripheral side of the outer rotor (); six linkage plates () which link between the outer rotor () and the inner rotor (); and a drive shaft () on which the inner rotor () is attached. A pump action is obtained by rotating the outer rotor () and the inner rotor (action is obtained by rotating the outer rotor () and the inner rotor (). Each of linkage plates () has a symmetrical cross sectional shape. A torque transmission is possible in the same way even if the outer rotor () is at a drive side and even if the inner rotor () is at the drive side. 1. A pump , comprising:a housing including a suction port, a discharge port, and an annular stator;a cylindrical outer rotor rotatably disposed at an inner peripheral side of the stator, including a plurality of permanent magnets arranged on an outer peripheral surface of the outer rotor to constitute a motor section in cooperation with the stator, and a plurality of plate holding grooves, each plate holding groove having a letter C shape in cross section, being extended in an axial direction of the outer rotor, and being formed on an inner peripheral surface of the outer rotor;an inner rotor disposed at a position eccentric with respect to the outer rotor, disposed at an inner peripheral side of the outer rotor, constituting a space communicated with the suction port and the discharge port against the outer rotor, and having an outer peripheral surface on which a plurality of slots are formed in a radial direction of the inner rotor;a drive shaft interlinked with the inner rotor and rotationally driven by means of a second drive source; anda plurality of linkage plates, each linkage plate having a head section of a circular cross section swingably fitted into a corresponding one of the plate holding grooves and a bulged section of a ...

Dual pump system for automatic transmission augmentation, extended stop and start, and sailing

A dual pump system for a motor vehicle transmission includes a first pump connected to and co-rotated with a pump shaft rotated during operation of a motor vehicle engine. A second pump is connected to a motor shaft of an electric motor. A one-way roller clutch is connected to the second pump and to the pump shaft. The one-way roller clutch is configured to allow the faster rotated one of the pump shaft or the motor shaft to drive the second pump. The pump shaft and the motor shaft can be co-axially aligned or positioned off-axis with respect to each other.

Fluid displacement system using gerotor pump

A fluid displacement system for a fluid producing subterranean well includes a well extending from a surface to a subterranean fluid bearing formation, the formation being in fluid communication with the well; and a gerotor pump in the well for pumping fluid from the formation to the surface.

LIQUID PUMPING DEVICE

Disclosed is a liquid pumping device, including a first component, a second component and a third component, wherein the second component moves relative to the first component in a fixed manner; a medium inlet and a medium outlet not in communication with each other are provided in a contact surface of the first component in liquid tightness sliding fit with the second component; a groove is provided in a contact surface of the second component in liquid tightness sliding fit, and the groove moves along a fixed path in the range of the contact surface in liquid tightness sliding fit; and the movement path of the groove respectively passes the medium inlet, the medium outlet and the third component, the third component is arranged on the side of the medium outlet in the forward movement direction of the groove, and when the groove moves forward through the third component, the part of the third component entering the groove extrudes the medium in the groove to the medium outlet. The quantification of liquid by the device of the present invention is determined by the groove, and the principle facilitates the control of the output precision of the pump. 1. A liquid pumping device , comprising a first component , a second component , and a third component , wherein the second component moves relative to the first component in a fixed manner , and at least a part of a contact surface of the first component and the second component is in liquid tightness sliding fit;a medium inlet and a medium outlet, not in communication with each other, are provided in the contact surface of the first component in liquid tightness sliding fit with the second component; at least one cave is provided in the contact surface of the second component in liquid tightness sliding fit with the first component; the cave moves in a fixed path in a range of the contact surface in liquid tightness sliding fit, along with a movement of the second component; a movement path of the cave passes ...

Tunable Progressive Cavity Pump

A well pump assembly includes a progressive cavity pump having a stator with an elastomeric inner portion. The stator has an axial cavity with internal lobes; a rotor with external lobes positioned within the axial cavity. An effector selectively increases and decreases a stiffness of the stator by changing a cross sectional area of the axial cavity in the stator. The effector may include a reservoir within the stator containing a fluid. A reservoir pump selectively increases and decreases a pressure of the fluid in the reservoir in response to sensing the flow rate from the progressive cavity pump and the torque of the motor. Alternately, the reservoir may contain a magneto-rheological fluid (MR fluid). A coil generates an electromagnetic field within the MR fluid to selectively increase and decrease a viscosity of the MR fluid. 1. A well pump assembly , comprising:a progressive cavity pump having a stator with an elastomeric inner portion, the stator having an axis, an axial cavity with an internal helical profile, and a rotor with an external helical profile positioned within the axial cavity;a motor operatively coupled to the progressive cavity pump for rotating the rotor when supplied with power, andat least one effector cooperatively associated with the stator that selectively increases and decreases a stiffness of the stator.2. The assembly according to claim 1 , further comprising:a controller that senses operating conditions of the progressive cavity pump assembly and controls the effector in response.3. The assembly according to claim 1 , wherein the effector selectively increases and decreases a cross sectional area of the axial cavity in the stator.4. The assembly according to claim 1 , wherein the effector comprises:a reservoir within the stator separate from the axial cavity and containing a fluid; anda reservoir pump for selectively increasing and decreasing a pressure of the fluid in the reservoir.5. The assembly according to claim 1 , wherein the ...

ELECTRIC MOTOR AND ROD-DRIVEN ROTARY GEAR PUMPS

A downhole pumping apparatus comprising a positive displacement rotary gear pump (RGP), driven by a rotating rod string or a submersible electric motor. 1. A pumping apparatus comprising a positive displacement rotary gear pump (RGP) , driven by a rotating rod string or a submersible electric motor.2. The apparatus of wherein the RGP is driven by a rotating rod string claim 1 , and further comprising a flex coupling.3. The apparatus of wherein the RGP is driven by an electric motor which is an AC induction motor or a permanent magnet motor and further comprising a flex coupling.4. The apparatus of further comprising a speed reducing or speed increasing gearbox disposed between the RGP and the motor.5. The apparatus of wherein the motor is mounted below the RGP.6. The apparatus of wherein the motor is mounted above the RGP.7. The apparatus of wherein the pumping apparatus is conveyed on coiled tubing.8. The apparatus of wherein the pumping apparatus is conveyed on a cable.9. The apparatus of wherein the RGP is conveyed on production tubing and further comprises a sensor operatively connected to the motor to vary motor operation.10. The apparatus of or further comprising a speed increasing or decreasing gearbox disposed between the motor and the RBP.11. The apparatus of or further comprising an oil/gas separator associated with a RGP intake.12. The apparatus of further comprising a drive extension having a splined male end which mates with a splined engagement coupling claim 2 , wherein the flex coupling is disposed between the engagement coupling and a RGP drive shaft.13. The apparatus of comprising a packer disposed on the pump between an intake and a pump discharge head claim 7 , the packer configured to mate with a pump seating nipple installed in a casing or a liner.14. The apparatus of comprising a packer disposed on the pump between an intake and a pump discharge head claim 8 , the packer configured with a surface control line to expand from a running shape to ...

SCREW PUMP

A screw pump has a male screw accommodation hole and a female screw accommodation hole formed in a pump housing. A male screw member and a female screw member are respectively accommodated in the male screw accommodation hole and the female screw accommodation hole. A male-side clearance is formed in a radial direction between the male screw member and the male screw accommodation hole and a female-side clearance is formed in the radial direction between the female screw member and the female screw accommodation hole. The female-side clearance is made to be larger than the male-side clearance, so that the female screw member can easily move in a direction away from the male screw member to the female-side clearance when any extraneous material is going to be wedged between the male screw member and the female screw member, to thereby prevent a locked condition of the screw members. 1. A screw pump comprising;a male screw member and a female screw member, one of which forms a driving-side screw member and the other of which forms a driven-side screw member;a driving-side convex portion of a spiral shape formed at an outer peripheral surface of the driving-side screw member, which is rotatable about a first rotational axis; anda driven-side convex portion of a spiral shape formed at an outer peripheral surface of the driven-side screw member, which is rotatable about a second rotational axis together with the driving-side screw member,wherein the driving-side screw member and the driven-side screw member are operatively engaged with each other and rotated together in order to pressurize working fluid from a suction port of a low pressure side and to pump out the working fluid from a discharge port of a high pressure side, andwherein the screw pump further comprises;(i) a pump housing;(ii) a driving-side screw accommodation hole formed in the pump housing and movably accommodating the driving-side screw member;(iii) a driven-side screw accommodation hole formed in the ...

LIGHTWEIGHT VACUUM PUMP WITH OXIDIZED SURFACES

A light weight vacuum pump is made with either or all of the stator, rotors and vanes made of aluminum or aluminum alloy that has been subjected to high energy oxidation, such as plasma electrolytic oxidation (PEO), electrolytic plasma oxidation (EPO) or micro-arc oxidation (MAO), to treat and harden the surface. 1. A vacuum pump system comprising:a motor; anda vacuum pump operably connected to the motor, the vacuum pump having one or more rotors and one or more stators formed from material selected from the group consisting of aluminum, aluminum alloy or sintered aluminum powder, wherein the one or more rotors and one or more stators are treated with a high energy oxidation process selected from the group consisting of plasma electrolytic oxidation, electrolytic plasma oxidation, micro-arc oxidation or spark discharge anodizing.2. The vacuum pump system of further comprising:a plurality of vanes operably connected to the one or more rotors wherein the plurality of vanes are formed of material selected from the group consisting of aluminum, aluminum alloy or sintered aluminum powder, and wherein the plurality of vanes are treated with a high energy oxidation process selected from the group consisting of plasma electrolytic oxidation, electrolytic plasma oxidation, micro-arc oxidation or spark discharge anodizing.3. The vacuum pump system of further comprising:a plurality of vanes operably connected to the one or more rotors wherein the plurality of vanes are formed of material selected from the group consisting of untreated polymer, carbon or graphite.4. The vacuum pump system of further comprising:an oil pump operatively connected to one of the one or more rotors.5. The vacuum pump system of further comprising:an oil tank configured to submerge the vacuum pump in oil during operation.6. A vacuum pump comprising:a stator having a cylindrical volute with a cylindrical inner wall, a first end wall and a second end wall;a rotor rotatably disposed within the stator, ...

HORIZONTAL AND VERTICAL WELL FLUID PUMPING SYSTEM

A pump system for producing fluids from a reservoir using a wellbore having a vertical section with a casing defining an annulus, a transitional section and a horizontal section, and a production tubing having a vertical section and a horizontal section, wherein the system includes a completion with an isolation device in the annulus near the bottom of the vertical section, a gas/liquid separator for receiving produced fluids from the horizontal section, and a vertical lift pump; a continuous flow path from the terminus of the production tubing to the vertical section; a plurality of horizontal pumps in the horizontal section, each having an intake exposed to the reservoir and an outlet in the continuous flow path. The horizontal length of the production tubing is closed to the reservoir except through the horizontal pumps. A method of producing fluids includes isolating a vertical section of a wellbore from a horizontal section; isolating the production tubing from the reservoir; pumping fluid from the reservoir adjacent a toe segment into a production tubing toe segment and towards the heel segment; and pumping fluid from the reservoir adjacent a heel segment into the production tubing heel segment and towards the vertical section, and pumping fluid up the vertical section to the surface. Also disclosed is a diaphragm pump. 1. A pump system for producing fluids from a reservoir using a wellbore having a vertical section with a casing defining an annulus , a transitional section and a horizontal section , and a production tubing having a vertical length and a horizontal length ending in a terminus , the system comprising:(a) a completion near a lower end of the vertical section or in the transitional section comprising: an isolation device in the annulus, a gas/liquid separator for receiving produced fluids from the horizontal length of the production tubing, and a vertical lift pump having an intake in the annulus above the isolation device;(b) a continuous flow ...

ROTARY PUMP DRIVEN MEDICAMENT DELIVERY DEVICE

A rotary pump is presented for use in a medicament delivery device, where the pump has a back plate having an inner surface and a rotor housing is positioned adjacent to the back plate having a peripheral wall. A front plate support is connected to the back plate and a flexible front plate is positioned between the front plate support and the rotor housing. The pump is rotated using a planetary gear transmission, where an eccentric shaft is operatively connected to the planetary gear mechanism. A rotor is rotationally fixed to the eccentric shaft and movably positioned within rotor housing. The rotor has three lobes, where each lobe has two peripheral curved surfaces sharing a common apex, where a first portion of each peripheral surface adjacent to the apex defines a non-smooth curve. 1. A pump comprising:a) a back plate having an inner surface;b) a rotor housing positioned adjacent to the back plate and having a peripheral wall;c) a front plate support connected to the back plate;d) a flexible front plate positioned between the front plate support and the rotor housing;e) a planetary gear transmission;e) an eccentric shaft operatively connected to the planetary gear mechanism; andf) a rotor rotationally fixed to the eccentric shaft and movably positioned within rotor housing, the rotor comprising three lobes, where each lobe has two peripheral curved surfaces sharing a common apex, where a first portion of each peripheral surface adjacent to the apex defines a non-smooth curve.2. The pump of where the peripheral wall defines a pump chamber with a trochoidal wall.3. The pump of where the pump chamber comprises a first and second chamber.4. The pump of where the planetary gear transmission comprises:a stationary timing pinion positioned on the back plate; anda ring gear integral with the rotor, where the ring gear has teeth that mesh with cooperating teeth on the timing pinion such that the ring gear rotates eccentrically around the timing pinion.5. The pump of ...

Internal gear pump

An internal gear pump includes an outer rotor having internal teeth, an inner rotor rotatably disposed inside the outer rotor and having external teeth engaging with the internal teeth, and a pump housing. The pump housing includes: a holding recess rotatably holding the outer rotor and having a wall on which an outer peripheral face of the outer rotor is to slide; an inlet to take in a fluid into pump chambers defined between the inner rotor and the outer rotor; an outlet to discharge the fluid from the pump chambers; a case groove provided on the wall and to hold the fluid; and a joint groove provided on an upper land face defined between a trailing end of the inlet and a leading end of the outlet and on which the internal teeth and the external teeth are to slide.

FLEXIBLE IMPELLER PUMP FOR FLOWABLE FOOD PRODUCT

A flexible impeller pump designed for use in dispensing a flowable food product is disclosed. The flexible impeller pump includes a cover, impeller assembly and a pump body that are assembled to create the pump without other separate components. The components can be permanently connected to each other to create a disposable pump or can be disassembled for cleaning and reuse. The impeller assembly includes an impeller shaft and a flexible impeller molded over the impeller shaft to prevent separation. The impeller assembly is received within the pump body and the cover is secured to the pump body. The cover includes a seal that is molded over the pump body to prevent separation of the seal from the cover. The impeller shaft extends through the pump body and is coupled to a drive shaft of an electric motor that is operable to drive the impeller pump. 1. A pump operable to pump a flowable food product , comprising:a pump body including an inlet port, an outlet port and an open impeller chamber;an impeller assembly configured to be received within the open impeller chamber, the impeller assembly including an impeller shaft and an impeller portion having a plurality of vanes; anda cover member having a body and a seal member, wherein the cover member is configured to be received and retained on the pump body such that the seal member is positioned between the cover member and the pump body.2. The pump of wherein the impeller portion is molded over an interface section of the impeller shaft.3. The pump of wherein the interface section includes a plurality of splines that frictionally engage the impeller portion.4. The pump of wherein the impeller shaft is formed from molded plastic and the impeller portion is formed from an elastomeric material.5. The pump of wherein the cover member is mechanically secured to the pump body to retain the impeller assembly within the impeller chamber.6. The pump of wherein the cover member is ultrasonically welded to the pump body.7. The ...

FLEXIBLE IMPELLER PUMP FOR FLOWABLE FOOD PRODUCT

A flexible impeller pump designed for use in dispensing a flowable food product. The flexible impeller pump includes a cover, impeller assembly and a pump body that are assembled to create the pump without other separate components. The components can be permanently connected to each other to create a disposable pump or can be disassembled for cleaning and reuse. The impeller assembly includes an impeller shaft and a flexible impeller molded over the impeller shaft to prevent separation. The impeller assembly is received within the pump body and the cover is secured to the pump body. The cover includes a seal that is molded over the pump body to prevent separation of the seal from the cover. The impeller shaft extends through the pump body and is coupled to a drive shaft of an electric motor that is operable to drive the impeller pump. 1. A pump operable to pump a flowable food product , comprising:a pump body including an inlet port, an outlet port and an open impeller chamber;an impeller assembly configured to be received within the open impeller chamber, the impeller assembly including an impeller shaft extending between a drive shaft portion and a stub shaft formed on an opposite end of the impeller shaft and an impeller portion having a plurality of vanes; anda cover member having a body and a seal member integrally formed with the body,wherein the cover member is configured to be received and retained on the pump body such that the cover member rotatably supports the stub shaft of the impeller shaft and the seal member is positioned in direct contact with the body of the cover member and the pump body to create a seal between the pump body and the cover member.2. The pump of wherein the impeller portion is molded over an interface section of the impeller shaft.3. The pump of wherein the interface section includes a plurality of splines that frictionally engage the impeller portion.4. The pump of wherein the impeller shaft is formed from molded plastic and the ...

PROGRESSING CAVITY DEVICES AND ASSEMBLIES FOR COUPLING MULTIPLE STAGES OF PROGRESSING CAVITY DEVICES

A progressing cavity device includes a stator including a first end, a second end, and an inner surface formed from a metallic material that extends between the first end and the second end, and a rotor rotatably disposed in the stator, the stator including a first end, a second end, and an outer surface formed from a metallic material that extends between the first end and the second end, wherein the outer surface of the rotor contacts the inner surface of the stator, wherein the inner surface of the stator includes a conical taper extending between the first end and the second end, wherein the outer surface of the rotor includes a conical taper extending between the first end and the second end. 1. A progressing cavity device , comprising:a stator comprising a first end, a second end, and an inner surface formed from a metallic material that extends between the first end and the second end; anda rotor rotatably disposed in the stator, the stator comprising a first end, a second end, and an outer surface formed from a metallic material that extends between the first end and the second end, wherein the outer surface of the rotor contacts the inner surface of the stator;wherein the inner surface of the stator comprises a conical taper extending between the first end and the second end;wherein the outer surface of the rotor comprises a conical taper extending between the first end and the second end.2. The progressing cavity device of claim 1 , wherein the taper of the inner surface of the stator and the taper of the outer surface of the rotor each comprise a fixed taper angle.3. The progressing cavity device of claim 1 , wherein the outer surface of the rotor is a helical surface comprising a plurality of rotor lobes and the inner surface of the stator is a helical surface comprising a plurality of stator lobes configured to intermesh with the rotor lobes.4. The progressing cavity device of claim 1 , wherein the first end of the stator comprises a fluid inlet end and ...

DOWNHOLE MOTOR-PUMP ASSEMBLY

A downhole motor-pump assembly disposed within a tubular string includes a rotor and a stator. The rotor has a first rotor portion and a second rotor portion. The first rotor portion has a first geometrical shape and the second rotor portion has a second geometrical shape. The first geometrical shape differs from the second geometrical shape. The stator has a first stator section and a second stator section. The first stator section is spaced from the second stator section by a gapped region. The first rotor portion is located within the first stator section and the second rotor potion is located within the second stator section. The differing geometry causes a difference in displacement in the first and second sections per revolution of the rotor. Therefore the difference in displacement must be made up and is induced into the tool at the gap or drillings between sections, and this additional volume is effectively pumped. 1. A downhole motor-pump assembly disposed within a tubular string , the motor-pump assembly comprising:a rotor, the rotor having a first rotor portion and a second rotor portion, the first rotor portion having a first geometrical shape and the second rotor portion having a second geometrical shape, the first geometrical shape differing from the second geometrical shape; anda stator having a first stator section and a second stator section, the first stator section being spaced from the second stator section by a gapped region, wherein the first rotor portion is located within the first stator section and the second rotor portion is located within the second stator section.2. The downhole motor-pump assembly of wherein the rotor is configured such that the first geometrical shape displaces a first volume of fluid upon rotation of the rotor and the second geometrical shape displaces a second volume of fluid upon rotation of the rotor.3. The downhole motor-pump assembly of wherein the second volume of fluid is greater than the first volume of fluid. ...

Toy Fluid Pumping Gun

A fluid pumping device is disclosed. The fluid pumping device includes a housing having a front end and a rear end, a fluid discharge opening in the front end of the housing, a pump assembly, a crank assembly rotatably connected to the pump assembly wherein the crank assembly operates the pump assembly, and a fluid storage reservoir connected to the gear housing from which fluid is drawn into the gear housing to be pumped through the fluid discharge opening. 1. A fluid pumping device comprising:a housing having a top;a fluid discharge opening in the housing;a pump assembly;a fluid storage reservoir connected to the pump assembly;a fluid path connected to the fluid storage reservoir and the fluid discharge opening; anda plurality of nozzles on the top of the housing wherein the nozzles are not fluidly connected to the fluid path and wherein the plurality of nozzles configured to be placed over the fluid discharge opening.2. The fluid pumping device of wherein the pump assembly comprising:a first gear; anda second gear, wherein the first gear is larger in diameter than the second gear and wherein the gear ratio between the first gear and the second gear is 15:1.3. The fluid pumping device of further comprising a crank assembly rotatably connected to the pump assembly wherein the crank assembly operates the pump assembly.4. The fluid pumping device of wherein the crank assembly further comprising:a crank arm; anda crank handle connected to the crank arm.5. The fluid pumping device of wherein the crank arm further comprising at least one notch and wherein the crank handle may be connected to the crank arm through the at least one notch.6. The fluid pumping device of wherein the crank arm further comprising at least two notches and wherein the crank handle may be connected to the crank arm through any one of the at least two notches whereby the length of the crank arm is determined by the position of the crank handle.7. The fluid pumping device of further comprising at ...

Isolated Chamber For Mechanical Face Seal Leakage In Submersible Well Pump Assembly

A submersible pump assembly includes a seal section connected to a motor, the seal section having a housing with an outboard bearing at a housing pump end in radial supporting engagement with a drive shaft. An inboard bearing is also in the housing pump end, axially spaced from the outboard bearing, and in radial supporting engagement with the shaft. A barrier fluid chamber in the housing pump end contains a barrier fluid. A primary shaft seal is located within the barrier fluid chamber and seals the barrier fluid in the barrier fluid chamber from the motor lubricant. A secondary shaft seal is mounted in the barrier fluid chamber between the primary shaft seal and the outboard bearing. The secondary shaft seal seals the barrier fluid in the barrier fluid chamber from well fluid exterior of the housing pump end. 1. A submersible pump assembly , comprising:a motor for driving a pump of the pump assembly, the motor containing a dielectric motor lubricant;a seal section operatively connected to the motor, the seal section comprising:a housing having a housing motor end, a housing pump end, and a longitudinal axis;a coaxial shaft in the housing that is driven by the motor;a motor lubricant equalizing chamber axially between the housing pump end and the housing motor end;a motor lubricant equalizer in the motor lubricant equalizing chamber for reducing a pressure differential between well fluid admitted to the motor lubricant equalizing chamber and the motor lubricant in the motor;an outboard bearing in the housing pump end in radial supporting engagement with the shaft;an inboard bearing in the housing pump end, axially spaced from the outboard bearing, and in radial supporting engagement with the shaft; anda primary shaft seal in the housing pump end in sealing engagement with the shaft, the primary shaft seal being axially between the outboard bearing and the inboard bearing.2. The assembly according to claim 1 , further comprising:a motor lubricant communication ...

HYBRID CORE PROGRESSIVE CAVITY PUMP

A stator for a progressive cavity pump may include a containment element with an inner surface and a casing. The casing may be arranged within the containment element, be generally isolated from the inner surface of the containment element, and define a stator cavity adapted for receiving a progressive cavity pump rotor and for accommodating substantially free rotation of the progressive cavity pump rotor therein. 1. A stator for a progressive cavity pump , comprising:a containment element with an inner surface; anda casing arranged within the containment element, generally isolated from the inner surface of the containment element, and defining a stator cavity adapted for receiving a progressive cavity pump rotor and for accommodating substantially free rotation of the progressive cavity pump rotor therein.2. The stator of claim 1 , wherein the stator cavity has a substantially constant cross-sectional shape with a continually changing orientation.3. The stator of claim 2 , wherein the casing comprises a plurality of segments.4. The stator of claim 3 , wherein the segments include an orientation controlling end component.5. The stator of claim 4 , wherein the orientation controlling end component comprises at least one of a male end component and a female end component.6. The stator of claim 4 , wherein the orientation controlling end component comprises a longitudinal length and the substantially constant cross-sectional shape and the continually changing orientation thereof is maintained along the longitudinal length and through the orientation controlling end component.7. The stator of claim 1 , wherein the casing is supported in general isolation from the containment device by the support structures.8. The stator of claim 1 , further comprising support structures extending from an outer surface of the casing and configured for supporting the casing within the containment element.9. The stator of claim 1 , further comprising filler arranged between the casing ...

ELECTRIC PROGRESSIVE CAVITY PUMP

An electric progressive cavity pump system includes a progressive cavity pump in operation connection with a six-pole, three-phase electric motor. A method of producing fluid from a wellbore includes the steps of positioning a progressive cavity pump below a fluid level in the wellbore, connecting a six-pole, three-phase electric motor that includes a stator having eighteen slots and a plurality of windings distributed among the eighteen slots, wherein the windings of different phases do not pass through the same slot and operating the progressive cavity pump via the electric motor to produce the fluid from the wellbore. The electric motor may be positioned below the fluid level in the wellbore or at the surface. 1. A submersible electric progressive cavity pump system , the system comprising:a wellbore drilled from the ground surface to a subterranean formation, the wellbore containing a fluid;a progressive cavity pump positioned in the wellbore below the fluid level; and 'a plurality of windings distributed among the slots, each of the plurality of windings comprising two coil sides, one of the two coil sides positioned in a top of one of the plurality of slots and the other of the two coil sides positioned in a bottom of one of the other of the plurality of slots, the plurality of windings are arranged in the plurality of slots such that electrical poles formed by the windings are symmetrically positioned, and wherein the windings of different phases do not pass through the same slot in each of the plurality of slots.', 'a six-pole, three-phase integer slots-per-pole ratio electric motor operatively connected to the progressive cavity pump, wherein the electric motor is positioned above the ground surface, the electric motor comprising2. The system of claim 1 , wherein the motor comprises eighteen slots formed symmetrically about a motor stator.3. The system of claim 1 , further comprising a 4:1 ratio gearbox adapted to operate the progressive cavity pump at 300 ...

PROGRESSIVE CAVITY PUMP AND METHOD FOR OPERATING SAME IN BOREHOLES

A method for operating a progressive cavity pump in a borehole comprising mounting a stator to a tubing string and inserting the stator and tubing string into a borehole wherein the stator has at least first and second active stator sections that are at different locations on the stator, then performing a first operating phase involving inserting a first rotor into the tubing string until the first rotor is located at a selected downhole position, wherein the first rotor has a first active rotor section that is aligned with the first active stator section when the first rotor is in the selected downhole position, and rotating the first rotor relative to the stator such that the aligned first active rotor and stator sections generate a pumping force. The method also comprises a second operating phase involving removing the first rotor from the borehole, and inserting a second rotor into the tubing string until the second rotor is located at a selected downhole position, wherein the second rotor has a second active rotor section that is aligned with the second active stator section when the second rotor is in the selected downhole location, and rotating the second rotor relative to the stator such that the aligned second active rotor and stator sections generate a pumping force. 1. A method for operating a progressive cavity pump in a borehole , comprising(a) mounting a stator to a tubing string and inserting the stator and tubing string into a borehole, the stator having at least first and second active stator sections that are at different locations on the stator;(b) inserting a first rotor into the tubing string until the first rotor is located at a selected downhole position, the first rotor having a first active rotor section that is aligned with the first active stator section when the first rotor is in the selected downhole position;(c) rotating the first rotor relative to the stator such that the aligned first active rotor and stator sections generate a ...

Pump for Support of the Heart

Rotary lobe pump, comprising a pump housing ( 2, 9, 10 ) with a substantially cylindrical pump chamber ( 8 ) and a rotary lobe as rotor ( 1 ) with at least two blades ( 3 ) arranged opposite each other or evenly distributed in the circumferential direction and at least one sealing valve ( 4 ), characterized in that at least two sealing valves ( 4 a, 4 b ) arranged opposite one another or uniformly distributed in the circumferential direction are provided, the at least two sealing valves ( 4 a, 4 b ) being rotatable or pivotable, and an inlet duct ( 11 ) to at least two inlet openings ( 6 ) into the pump chamber ( 8 ) and an outlet duct ( 12 ) from at least two outlet openings ( 7 ) out of the pump chamber ( 8 ) being provided axially in a rotor axial tube ( 18 ), extending from the opposite axial ends and separated from one another.

VARIABLE SPEED MULTI-STAGE PUMP

A multi-stage gear pump includes a first pump stage, a second pump stage, and a variable speed gearbox including an input and an output, wherein the input is rotationally coupled to the first pump stage and the input rotates at a first rotational speed, and the output is rotationally coupled to the second pump stage and rotates at a second rotational speed, wherein a variable gear ratio determines the second rotational speed relative to the first rotational speed. 1. A multi-stage gear pump , comprising:a first pump stage;a second pump stage; anda variable speed gearbox including an input and an output, wherein the input is rotationally coupled to the first pump stage and the input rotates at a first rotational speed, and the output is rotationally coupled to the second pump stage and rotates at a second rotational speed, wherein a variable gear ratio determines the second rotational speed relative to the first rotational speed.2. The multi-stage gear pump of claim 1 , further comprising a gearbox controller to adjust the variable gear ratio.3. The multi-stage gear pump of claim 2 , further comprising an electronic engine controller to provide at least one operating parameter to the gearbox controller.4. The multi-stage gear pump of claim 3 , wherein the gearbox controlled adjusts the variable gear ratio in response to the at least one operating parameter.5. The multi-stage gear pump of claim 1 , wherein the first pump stage is a main pump stage.6. The multi-stage gear pump of claim 1 , wherein the first pump stage is an actuator pump stage.7. The multi-stage gear pump of claim 1 , wherein the second pump stage is a main pump stage.8. The multi-stage gear pump of claim 1 , wherein the second pump stage is an actuator pump stage.9. The multi-stage gear pump of claim 1 , further comprising a boost stage claim 1 , wherein the boost stage is rotationally coupled to the first pump stage.10. The multi-stage gear pump of claim 1 , further comprising a boost stage claim 1 , ...

PROGRESSIVE CAVITY PUMP SYSTEM HAVING REVERSE MODE

A progressive cavity pump (PCP) system includes a PCP with a rotor rotatably disposed in a stator, a permanent magnet motor, sucker rod(s), and a control system. The rotor is coupled to one of the sucker rods via a high-torque connection that allows for counter clockwise rotation without loosening the connection between the rotor and sucker rod. The control system operates the system in a production mode by rotating the rotor clockwise. Upon manual input by a user, or automatic triggering when protections settings of the control system call for a shutdown or cleanout or when the control system senses an imminent pump shutdown, the control system operates the system in a reverse mode by rotating the rotor counterclockwise. The reverse mode pumps fluids and suspended solid particles down into the well prior to pump shutdown to inhibit the solids from clogging the pump or preventing the pump from restarting. 1. A method of operating a progressive cavity pump (PCP) system , the system comprising a PCP disposed in a wellbore , the method comprising:operating the PCP system in a production mode, wherein in the production mode a rotor of the PCP rotates in a first direction; andoperating the PCP system in a reverse mode, wherein in the reverse mode the rotor rotates in a second direction opposite the first direction.2. The method of claim 1 , wherein operating the PCP system in the production mode comprises rotating the rotor clockwise.3. The method of claim 1 , wherein operating the PCP system in the reverse mode comprises rotating the rotor counter-clockwise.4. The method of claim 1 , further comprising monitoring torque and/or discharge pressure of the PCP.5. The method of claim 4 , further comprising stopping operation of the PCP if the torque and/or discharge pressure reaches a predetermined setpoint.6. The method of claim 1 , further comprising stopping operation of the PCP after operation in the reverse mode claim 1 , wherein the reverse mode is configured to pump ...

Operable implant

An operable implant adapted to be implanted in the body of a patient. The operable implant comprising an operation device and a body engaging portion, the operation device comprises an electrical motor comprising a static part comprising a plurality of coils and a movable part comprising a plurality of magnets, such that sequential energizing of said coils magnetically propels the magnets and thus propels the movable part. The operation device further comprises an enclosure adapted to hermetically enclose the coils of the static part, such that a seal is created between the static part and the propelled moving part with the included magnets, such that the coils of the static part are sealed from the bodily fluids, when implanted.

MUD MOTOR STATORS AND PUMPS AND METHOD OF MAKING

A mud motor stator or a pump comprising of a tubular outer portion; a number of lobes extending radially inwardly from the tubular outer portion, at least one of which comprises a skeletal structure and method for producing a mud motor stator or a pump comprising of placing material and bonding the material together in a pattern dictated by the design shape of the stator or pump. 1. A method for producing a stator comprising:placing material and bonding the material together in a pattern dictated by the design shape of the stator the shape including a number of lobes, at least one of which having a skeletal structure, at least one of the number of lobes having a load side and a seal side, the seal side being less supported by the skeletal structure than the load side.2. The method as claimed in claim 1 , wherein the bonding is by direct metal laser melting.3. The method as claimed in claim 1 , wherein placing and bonding is part of an additive manufacturing process.4. The method as claimed in claim 3 , wherein the additive manufacturing process comprises a layer by layer or particle by particle approach.5. The method as claimed in claim 1 , wherein the bonding is by one of welding claim 1 , binding and sintering.6. The method as claimed in claim 3 , wherein an operating parameter of the additive manufacturing process is modified to produce a material property in a location within the stator that is different than that material property elsewhere in stator.7. The method as claimed in claim 1 , wherein the material is metal or metal alloy.8. The method as claimed in claim 7 , wherein the metal or metal alloy comprises at least one of cobalt claim 7 , nickel claim 7 , copper claim 7 , chromium claim 7 , aluminum claim 7 , iron claim 7 , steel claim 7 , stainless steel claim 7 , titanium claim 7 , and tungsten.9. The method as claimed in claim 1 , wherein the material is at least one of polyetheretherketone claim 1 , carbon-based material claim 1 , and glass.10. The ...

IDLER GEAR FOR POSITIVE DISPLACEMENT GEAR PUMP

One or more techniques and/or systems are disclosed for a gear pump for low speed transfers of viscous liquid slurries promotes growth of suspended particles, such as sugar crystals, by avoiding crushing of the particles. The pump includes a rotor gear in mesh with an eccentrically mounted idler gear supported on a boss of a pump head that includes a crescent seal extending into an opening resulting from the eccentricity of the idler gear relative to the rotor gear. The idler gear contains a radially extending land on each tooth profile, symmetrically oriented on adjacently spaced pairs of teeth. The lands, configured to minimize crushing of crystals passing through the pump, engage mating rotor teeth for sealing between inlet and outlet ports of the pump. To promote crystal growth, the lands cover only 10% to 30% of profile surface area of each tooth. To minimize gear tooth wear, the lands are axially staggered between successive adjacent pairs of teeth. 1. A positive displacement gear pump comprising:a casing defining a casing interior, the casing comprising an inlet port and an outlet port for transferring a target fluid though the casing interior;an external rotor gear supported within an inboard end of the casing by a rotor shaft, the external rotor gear comprising radially inwardly oriented teeth;a head positioned at an outboard end of the casing; andan internal idler gear rotationally supported on the head about an idler gear axis within the casing interior, the internal idler gear comprising radially outwardly oriented teeth, the internal idler gear being operably disposed on the head in a fixed, radially eccentric, relationship with the external rotor gear, and at least a portion of the internal idler gear teeth operably meshing with at least a portion of the external rotor gear teeth; two radially oriented surfaces respectively extending between a root and a tip of the idler gear tooth;', 'a land comprising a substantially planar surface rising from the ...

CHECK VALVE WITH INTERNAL MASS FOR PROGRESSIVE CAVITY PUMPS

The present invention corresponds to a check valve with an inertial mass that is installed in the bottom of the production tubing and above the progressive cavity pump (PCP) of an oil well, which prevents that the hydrostatic column that is inside of the production tubing go down in the moment where the artificial lift of the column stops for the detention of the PCP pump. If we prevent that this phenomenon to happen, the PCP pump will not rotate in the opposite direction of its normal operation and it will not be clogged by any particulate material that is contained in it. 13172525. A check valve with an inertial mass for progressive cavity pump (PCP) , characterized by having a piston that overcomes the frictional force between the inner packing and the stem by mass , it makes a downward movement , and it makes a seal with niple and closes the fluid passage between the stem and the niple .2171235. The check valve with an inertial mass for progressive cavity pump (PCP) of claim 1 , characterized by having an upper nut claim 1 , which presents the wedges that serve to fit the grooves wedge of the piston claim 1 , once its unseated of the niple and the well is in production.3312322. The check valve with an inertial mass for progressive cavity pump (PCP) of claim 1 , that is characterized by comprising a piston that has a inter geometry with an inner diameter D that is lower than the diameter D claim 1 , which suspends the seizing of the piston in the stem by buckling of the stem .43184. The check valve with an inertial mass for progressive cavity pump (PCP) of claim 1 , characterized by having a piston that has an outer packing which is adjusted by the piston cover . The present invention is related to the field of mechanical engineering and is applied in the hydrocarbon sector.Specifically, the present invention it is applied in oil wells where the PCP pumps are used.The patent request number 2006027513 “Improvement System in a fuel pump” has a fuel supply system ...

VANE PUMP DEVICE

An inner-plate cam ring side recess portion is formed in a cam ring side end surface of an inner plate, communicates with a columnar groove which is a center side space in a vane grooves, and supplies a working fluid to the columnar groove. The inner-plate cam ring side recess portion is divided into multiple sections between a first side discharge port, through which the working fluid is discharged at a first discharge pressure from a pump chamber, and a second side suction port through which the working fluid is suctioned into a pump chamber discharging the working fluid at a second discharge pressure. An angle of a separation portion in a rotation direction is smaller than or equal to an angle between the first side discharge port and the second side suction port. 1. A vane pump device comprising:multiple vanes;a rotor that includes vane grooves which are recessed from an outer circumferential surface of the rotor in a rotational radial direction such that the vanes are supported to be movable in the rotational radial direction, and that rotates due to a rotating force received from a rotation shaft;a cam ring that includes an inner circumferential surface facing the outer circumferential surface of the rotor, and is disposed to surround the rotor;one side member disposed on one end portion side of the cam ring in a direction of a rotational axial direction to cover an opening of the cam ring; andanother side member disposed on the other end portion side of the cam ring in the rotational axial direction to cover an opening of the cam ring,wherein a recess portion is formed in a cam ring side end surface of at least one of the one side member and the other side member, communicates with a center side space which is a space in the vane grooves on a rotation center side, and supplies a working fluid to the center side space, andwherein the recess portion is divided into multiple sections between a first side discharge port, through which the working fluid is ...

POSITIVE DISPLACEMENT PUMP SHAFT BEARING ASSEMBLY

The application relates to a positive displacement pump shaft bearing assembly that comprises a shaft having a shaft lodging and a shaft rotational axis. The assembly further comprises a housing having a housing lodging and one rolling element that is located between said lodgings. The rolling element comprises a rolling element centre point that coincides with the shaft rotational axis. 110202510030354025354090100. A positive displacement pump shaft bearing assembly () , comprising a shaft () having a shaft lodging () and a shaft rotational axis () , a housing () having a housing lodging () and one rolling element () located between said lodgings ( , ) , wherein the rolling element () comprises a rolling element center point () that coincides with the shaft rotational axis ().2102535505152. The shaft bearing assembly () according to claim 1 , wherein at least one of the shaft lodging () or the housing lodging () has one lodging form selected among: a conical-shape () claim 1 , a sphere-shape () claim 1 , or a sphere-recessed-shape ().310402535. The shaft bearing assembly () according to claim 1 , wherein the rolling element () has point or line contact with the shaft lodging () or the housing lodging ().4102535100. The shaft bearing assembly () according to claim 1 , wherein the shaft lodging () and/or the housing lodging () is adjustable in position parallel to the shaft rotational axis ().51025352530. The shaft bearing assembly () according to claim 1 , wherein the shaft lodging () and/or the housing lodging () is threadedly connected with the shaft () or the housing ().610602535406025352030. The shaft bearing assembly () according to claim 1 , wherein at least one distance element () is located between the shaft lodging () or the housing lodging () and the rolling element () claim 1 , or at least one distance element () is located between the shaft lodging () and/or the housing lodging () and the shaft () and/or the housing ().710702535. The shaft bearing ...

Fluid Pump With Shim And Related Methods Of Manufacture

A fluid pump includes a gear housing with a pocket wall and a base. The pocket wall and the base define a pocket that projects into the gear housing from a pocket surface. The fluid pump also includes a first gear rotatably positioned in the pocket. The first gear is spaced from the pocket surface by a first gap. The fluid pump also includes a second gear rotatably positioned in the pocket that engages the first gear. The second gear is spaced from the pocket surface by a second gap. The fluid pump also includes a selected shim that is selected from a plurality of shims in a shim set. The selected shim has a thickness that results in a desired clearance between the selected shim and the first face or the second face. 1. A fluid pump comprising:a gear housing including a pocket wall and a base, the pocket wall and the base defining a pocket that projects into the gear housing from a pocket surface;a first gear rotatably positioned in the pocket, the first gear including a first face that is spaced from the pocket surface by a first gap;a second gear rotatably positioned in the pocket and engaging the first gear, the second gear including a second face that is spaced from the pocket surface by a second gap; anda selected shim positioned in the pocket over the first gear and the second gear, wherein the selected shim is selected from a plurality of shims in a shim set by comparing thicknesses of the shims in the plurality of shims to the first gap or the second gap, the selected shim having a thickness that results in a desired clearance between the selected shim and the first face or the second face.2. The fluid pump of wherein the desired clearance is a minimum clearance.3. The fluid plump of wherein the pocket wall includes two rounded portions to define a pocket with a first circular depression and a second circular depression claim 1 , the first circular depression configured to receive the first gear and the second circular depression configured to receive the ...

PUMP APPARATUS

A pump apparatus can include a suction tube, a pliable sealing ring, and an actuator mechanism coupled to the suction tube. The suction tube can be configured to be removably coupled to a container in which the viscous fluid is arranged and be fluidly coupled to an interior of the container and to an output port for outputting the viscous fluid. The pliable sealing ring can be configured to sealingly engage with an interior wall of the container. When the suction tube is coupled to the container and the pliable sealing ring is sealingly engaged with the interior wall of the container, actuating the actuator mechanism can cause the viscous fluid to be suctioned upwardly through the suction tube and output from the output port, ambient air to be drawn into the container, and the pliable sealing ring to move downwardly. 1. A pump apparatus for a viscous fluid , comprising:a cap configured to be removably coupled to a container in which the viscous fluid is arranged, the cap defining a suction tube aperture;a suction tube extending through the suction tube aperture and having a first end and a second end, the first end configured to be arranged in an interior of the container and the second end being fluidly coupled to an output port for outputting the viscous fluid;a pliable sealing ring sealingly engaged with the suction tube, the pliable sealing ring being configured to further sealingly engage with an interior wall of the container; andan actuator mechanism coupled to the suction tube, the viscous fluid to be suctioned upwardly through the suction tube and output from the output port,', 'ambient air to be drawn into the container, and', 'the pliable sealing ring to move downwardly., 'wherein, when the first end of the suction tube is arranged in the viscous fluid in the interior of the container and the pliable sealing ring is sealingly engaged with the interior wall of the container, actuating the actuator mechanism causes2. The pump apparatus of claim 1 , wherein ...

HYBRID ELASTOMER/METAL ON METAL MOTOR

A hybrid elastomer/metal on metal motor for a helical gear device includes a rotor and stator comprising a hydraulic motor that produces work when a working fluid is pumped therethrough. The improvement involves the stator being, for part of its length, a conventional or even wall stator, using an elastomer to form a seal against the moving rotor. The stator's remaining length comprises a profiled rigid surface that forms a seal directly with the moving rotor. This gives the motor the high efficiency of the elastomer sealing against the rotor, and simultaneously provides a backup of the stator's rigid section allowing continued motor operation at reduced efficiency, if the elastomer part failed in service. The invention also includes combinations of a regular disk stack with a rubber lining, a rigid material disk stack (or unitized element) and a circular rigid sleeve which react to rotor sideloading while permitting proper rotor orbiting. 1. A method of making a stator for a hydraulic motor adapted to have an elongated and helically-lobed rotor rotatably disposed therein , said method comprising:forming a cylindrical stator housing;providing an alignment core tool having at least one rigid section positioned thereon and at least one rigid sleeve positioned thereon, said at least one rigid section comprising a helically-convoluted chamber and said at least one rigid sleeve having a cylindrical chamber section;inserting said alignment core tool with said at least one rigid section and said at least one sleeve thereon into said cylindrical stator housing;securing said at least one rigid section and said at least one sleeve to said cylindrical stator housing;replacing said alignment core tool with an injection core tool, said injection core tool comprising a predetermined stator profile that comprises at least one more lobe than a number of said rotor lobes;injecting an elastomeric material into said cylindrical stator housing to form a tubular elastomeric section ...

Metal Bellows with Guide Rings

A well pump assembly has a pump driven by an electrical motor. A seal section reduces a pressure difference between a dielectric lubricant in the motor and a hydrostatic well fluid Pressure. The seal section has a housing containing a guide tube concentric with the axis. Contractible and extensible inner and outer bellows surround the guide tube. An inner bellows guide ring is secured to the inner bellows between ends and has an inner surface with an inner diameter smaller than a minimum inner diameter of the inner bellows for sliding engagement with an outer surface of the guide tube as the inner bellows lengthens and contracts. The outer bellows has a guide ring secured between ends and having an outer surface with an outer diameter larger than a maximum outer diameter of the outer bellows for sliding engagement with an inner surface of the housing. 1. A well pump assembly for pumping well fluid from a well , comprising:a pump;an electrical motor operatively coupled to the pump for driving the pump;a seal section operatively coupled to the motor for reducing a pressure difference between a dielectric lubricant in the motor and a hydrostatic well fluid pressure on an exterior of the motor, the seal section comprising:a guide member having a longitudinal axis and a cylindrical guide surface;a bellows coaxial with the guide member and having a flexible corrugated wail that is closely spaced to the guide surface and moves axially relative to the guide surface when the bellows contracts and extends; anda guide ring secured to the wall of the bellows between ends of the bellows, the guide ring having a contacting surface protruding slightly from the wall and slidingly engaging the guide surface as the bellows contracts and extends.2. The assembly according to claim 1 , further comprising:a wear resistant element on at least one of the surfaces of the guide ring and the guide member to reduce friction and increase wear life.3. The assembly to according to claim 1 , ...

LIQUID PUMP, IN PARTICULAR FOR PROVIDING A SUPPLY TO A TRANSMISSION OR TO A CLUTCH IN THE DRIVE TRAIN OF A MOTOR VEHICLE

A liquid pump, in particular for providing a supply to a transmission or to a clutch in the drive train of a motor vehicle, includes a drive motor, a pump module which can be operated in two opposing directions of rotation, and at least one inlet and multiple outlets, each of which has at least one corresponding check valve. The pump has a valve plate corresponding to the pump module in which, for each check valve, a valve seat and a receptacle for a valve element interacting with the valve seat are provided. 1. A liquid pump , comprising:a drive motor,a pump module configured to be operated in two opposing directions of rotation,an inlet and multiple outlets, each of which has at least one corresponding check valve, anda valve plate provided corresponding to the pump module in which, for each check valve, a valve seat and a receptacle for valve elements interacting with the valve seat are provided.2. The liquid pump according to claim 1 , whereineach valve seat forms together with a corresponding receptacle a throughflow channel which is arranged substantially in an axial direction.3. The liquid pump according to claim 2 , wherein claim 2 ,the valve plate comprises at least one flow transfer opening which extends from one throughflow channel to another throughflow channel and which is exposed at one of flat sides of the valve plate.4. The liquid pump according to claim 3 , whereinthe at least one flow transfer opening forms a throttle.5. The liquid pump according to claim 1 , whereinthe pump module has a pump plate,the valve plate is arranged on the pump plate, andthe pump plate has at least one flow transfer channel which connects two throughflow channels to one another.6. The liquid pump according to claim 1 , whereina closure plate is arranged on a side of the valve plate facing away from the pump module and is provided with at least one inlet opening and at least two outlet openings.7. The liquid pump according to claim 6 , comprisingat least two cooling media ...

OIL PUMP

A pump housing of an oil pump includes a suction port that supplies oil to a pump room, a discharge port that discharges oil from the pump room, and a seal portion that suppresses leakage of oil from the pump room to outside of the pump room. A shaft of the oil pump includes a small diameter portion and a large diameter portion having different diameters, the small diameter portion is connected to the inner rotor, and the shaft and the inner rotor integrally rotate. The seal portion is in contact with a side surface of the inner rotor extending in a diameter direction of the shaft, and also extends to a region in the diameter direction on an inner side smaller than the large diameter portion in the diameter direction. 1. An oil pump , comprising:a pump housing including a rotor housing space inside;an inner rotor and an outer rotor being housed in the rotor housing space;a pump room being formed by the inner rotor and the outer rotor in the pump housing; anda shaft being inserted through the inner rotor, whereinthe pump housing includes a suction port that supplies oil to the pump room, a discharge port that discharges oil from the pump room, and a seal portion that suppresses leakage of oil from the pump room to outside of the pump room,the shaft includes a small diameter portion and a large diameter portion having different diameters, the small diameter portion is connected to the inner rotor, and the shaft and the inner rotor integrally rotate, andthe seal portion is in contact with a side surface of the inner rotor extending in a diameter direction of the shaft, and also extends to a region in the diameter direction on an inner side smaller than the large diameter portion in the diameter direction.2. The oil pump according to claim 1 , whereinthe shaft is in non-contact with the seal portion, and,in a shaft direction of the shaft, the shaft is supported by a portion on one side in the shaft direction with respect to the seal portion and a portion on another side ...

APPARATUS AND METHOD FOR IMPROVING AN ELECTRIC SUBMERSIBLE PUMP SYSTEM

An electrical submersible pump system include an electric submersible pump coupled to a lower end of a production conduit extending into a wellbore, the production conduit in fluid communication with a discharge of the electric submersible pump and with a well conduit extending to the surface. A bypass conduit is nested inside the production conduit and is in fluid communication with the discharge. The check valve is opened when flow is established in the annular space and is otherwise closed. The bypass conduit extends for a selected distance above the discharge. The bypass conduit has a plurality of selected diameter apertures through a wall of the bypass conduit to enable flow into the annular space. 1. An electrical submersible pump system , comprisingan electric submersible pump coupled to a lower end of a production conduit extending into a wellbore, the production conduit in fluid communication with a discharge of the electric submersible pump and with a well conduit extending to the surface;a bypass conduit nested inside the production conduit and in fluid communication with the discharge; andwherein the bypass conduit extends for a selected distance above the discharge, the bypass conduit having a plurality of selected diameter apertures through a wall of the bypass conduit to enable flow into the annular space.2. The system of wherein the apertures have a size which decreases with respect to increasing distance above the discharge.3. The system of wherein the apertures have a size which is selected to control fluid pressure drop along the bypass conduit.4. The system of wherein the apertures are at least one of angled toward the discharge and transverse to a longitudinal dimension of the bypass conduit.5. The system of wherein the bypass conduit is closed at an upper end of the bypass conduit.6. The system of wherein the selected length of the bypass conduit above the pump discharge is related to a solids fraction of fluid lifted by the pump system and a ...

OIL SUPPLY DEVICE AND METHOD OF CONTROLLING ELECTRIC OIL PUMP

The objective of the present invention provides an oil supply device in which a negative pressure in a pump chamber is reduced or eliminated when an electric oil pump is shut down, thereby preventing air from entering the pump chamber and allowing oil to be supplied or recirculated smoothly. This oil supply device includes: an electric oil pump in which a rotary volumetric change pump provided with an inner rotor and an outer rotor is caused to operate by means of a motor; and an electric oil pump controller which controls the motor in such a way that, when the electric oil pump is to be shut down, the rotary volumetric change pump is caused to temporarily stop, after which the rotary volumetric change pump is caused to rotate by a predetermined angle in the opposite direction to the direction of rotation during oil supply, and is then shut down. 1. An oil supply device comprising:an electric oil pump in which a rotary volumetric change pump provided with an inner rotor and an outer rotor is operated by a motor; andan electric oil pump controller which controls the motor such that when the electric oil pump is to be shut down, the rotary volumetric change pump is caused to temporarily stop and to rotate by a predetermined angle in a direction opposite to a rotation direction during oil supply, and the electric oil pump is then shut down.2. The oil supply device according to claim 1 ,wherein the predetermined angle, by which the rotary volumetric change pump is caused to rotate in the direction opposite to the rotation direction during oil supply, is 360 degrees with respect to the inner rotor.3. The oil supply device according to claim 1 ,{'sup': '2', 'wherein a kinematic viscosity coefficient of oil to be supplied using the rotary volumetric change pump is equal to or higher than 1,000 mm/s.'}4. A method of controlling an electric oil pump comprising:controlling a motor such that when the electric oil pump, in which a rotary volumetric change pump provided with an ...

Pump assembly with charge pump rotor, inversion pump rotor and scavenge pump rotor

A pump assembly is provided and includes a housing having first, second and third pairs of fluid openings and first, second and third rotary pumps, which are co-rotatable about a common longitudinal axis defined through the housing to drive fluid flow relative to the first, second and third pairs of fluid openings, respectively. The first rotary pump includes an input member receptive of rotational drive energy for the first, second and third rotary pumps.

SMART DRILLING MOTOR STATOR

A drilling motor system for drilling a subterranean well includes a stator tube, the stator tube being an elongated tubular member with a central stator bore. A stator elastomer layer is located within the central stator bore, lining a wall of the central stator bore. The stator elastomer layer has an elastomer bore that includes a plurality of stator lobes extending in a helical pattern along an axial length of the central bore. A rotor is located within the elastomer bore, the rotor being an elongated member that includes a plurality of rotor lobes extending in a helical pattern along an axial length of the rotor. The stator elastomer layer includes a failure detection system, the failure detection system operable to identify a region of damaged stator elastomer layer. 1. A drilling motor system for drilling a subterranean well , the system including:a stator tube, the stator tube being an elongated tubular member with a central stator bore;a stator elastomer layer, the stator elastomer layer located within the central stator bore and lining a wall of the central stator bore, the stator elastomer layer having an elastomer bore that includes a plurality of stator lobes extending in a helical pattern along an axial length of the central bore;a rotor located within the elastomer bore, the rotor being an elongated member that includes a plurality of rotor lobes extending in a helical pattern along an axial length of the rotor; andwhere the stator elastomer layer includes a failure detection system, the failure detection system operable to identify a region of damaged stator elastomer layer.2. The system of claim 1 , where the failure detection system includes a dyed elastomer material that forms the stator elastomer layer claim 1 , where the dyed elastomer material is operable to identify the region of damaged stator elastomer layer.3. The system of claim 2 , where the dyed elastomer material includes two or more color codes claim 2 , each color code being located ...

Filling machine and method for filling up liquid or pasty masses with external collecting vessel

The present disclosure relates to a filling machine and a method for filling up pasty or liquid masses, for example for sausage production, with a feed pump, in particular a vane pump, for conveying the pasty or liquid masses, a vacuum pump for generating a vacuum in the feed pump, in particular the vane cells of the vane pump, wherein the feed pump may be connected with the vacuum pump via a first channel and via an integrated collecting vessel for entrained ingredients. According to the present disclosure, a supply means is provided via which the feed pump may be optionally additionally connected with an external collecting vessel via the first channel. The operator may thus choose between two different operating modes with and without an external collecting vessel.

ELECTRIC OIL PUMP AND HYDRAULIC PRESSURE SUPPLY DEVICE

An electric oil pump is coupled to a pump receptacle including an oil inflow passage and an oil outflow passage. The electric oil pump includes a motor, a pump rotor, a housing, and a check valve. The housing accommodates the motor and the pump rotor. The housing closes an opening of the pump receptacle and includes at least a fitted portion fitted into the pump receptacle. An oil compartment is formed between the pump receptacle and the housing. Oil flows into the oil compartment from the oil inflow passage when the pump rotor is rotated. The fitted portion is partially immersed in the oil collected in the oil compartment. The housing includes a suction port and a discharge port. A check valve, located in the housing, limits reversed flow of the oil from the oil compartment to the oil inflow passage. 1. An electric oil pump coupled to a pump receptacle including an oil inflow passage and an oil outflow passage , the electronic oil pump comprising:a motor;a pump rotor rotated when the motor is driven; the housing is formed to close an opening of the pump receptacle and includes at least a fitted portion fitted into the pump receptacle,', 'the housing includes an outer surface, and the pump receptacle includes a wall surface,', 'an oil compartment is formed between the wall surface of the pump receptacle and the outer surface of the housing,', 'oil flows into the oil compartment from the oil inflow passage when the pump rotor is rotated,', 'the fitted portion is partially immersed in the oil collected in the oil compartment, and', a suction port through which oil is drawn into the housing from the oil compartment when the pump rotor rotates, and', 'a discharge port through which oil is discharged to the oil outflow passage when the pump rotor rotates; and, 'the housing includes'}], 'a housing that accommodates the motor and the pump rotor, wherein'}a check valve located in the housing, wherein the check valve limits reversed flow of the oil from the oil compartment ...

FLOW-THROUGH PULSING ASSEMBLY FOR USE IN DOWNHOLE OPERATIONS

A flow-through assembly for use in a downhole drilling string includes a Moineau-type motor, means for selectively activating the motor such as a ball catch component that selectively causes drilling fluid to enter into or bypass the motor, and a rotating variable choke assembly that is driven by a rotor of the motor. The choke assembly varies the flow rate of drilling fluid as rotation causes ports of the choke assembly to enter into and out of alignment with each other. In one embodiment, the choke assembly comprises a faceted rotary component including bypass ports on the facets of the component. In another embodiment, the choke assembly comprises a tapered rotary component that rotates in a complementarily tapered stationary component. 1. A flow-through assembly for use in a downhole drilling string , the flow-through assembly comprising:a motor;means for selectively activating the motor; anda rotating variable choke assembly for varying a flow rate of drilling fluid passing therethrough, the rotating variable choke assembly comprising a rotary component and stationary component each having at least one cooperating port or channel that enters into and out of alignment as the rotary component is driven by the motor, when activated.2. The flow-through assembly of either claim 1 , wherein:the stationary component comprises a ring having at least one channel provided on an interior face of the ring;the rotary component comprises a bore, and at least one port extending from an outer surface of the rotary component to the bore; andthe rotary component is positioned in the stationary component such that the at least one port enters into and out of alignment with the at least one channel as the rotary component is driven by the motor, when activated.3. The flow-through assembly of claim 2 , wherein the rotary component comprises an upper tapered face claim 2 , and at least one bypass port extending between the bore and the upper tapered face claim 2 , the rotary ...

Tachometer for downhole drilling motor

A tachometer for a downhole motor includes: a tubular housing having a coupling for connection to a housing of the motor; and a probe. The probe: has a coupling for connection to a rotor of the motor, is movable relative to the tachometer housing, and has at least a portion disposed in a bore of the tachometer housing. The tachometer further includes electronics disposed in the tachometer housing and including: a battery; one or more proximity sensors for tracking an orbit of the probe; and a programmable logic controller (PLC). The PLC is operable: to receive the tracked orbit, and at least one of: to determine an angular speed of the probe using the tracked orbit, and to forecast a remaining lifespan of the motor using the tracked orbit.

UNDERCURED STATOR FOR MUD MOTOR

A stator for a mud motor and methods for manufacturing and using the same, of which one such method includes obtaining a mud motor having a stator made at least partially from a rubber. At least a portion of the rubber is cured by at most about 90%. The method also includes deploying the mud motor into a well as part of a drill string. The rubber is not further cured prior to deploying the mud motor into the well. The method further includes generating torque using the mud motor by pumping a mud through the stator. 1. A stator for a mud motor , the stator comprising a body made at least partially from a rubber , wherein at least a portion of the rubber is at most about 90% cured.2. The stator of claim 1 , wherein the rubber defines a curing gradient such that the rubber is more cured at an outer surface thereof and less cured at an inner surface thereof claim 1 , the inner surface defining a bore through the body claim 1 , wherein the at least a portion of the rubber that is at most about 90% cured includes the inner surface.3. The stator of claim 2 , wherein the outer surface is configured to interface with a tube of the mud motor claim 2 , wherein the inner surface is configured to cooperate with a rotor claim 2 , and wherein the bore is configured to receive a drilling fluid therethrough.4. The stator of claim 1 , wherein the at least a portion of the rubber is at most 70% cured.5. The stator of claim 1 , wherein the at least a portion of the rubber is between about 50% cured and about 90% cured.6. The stator of claim 1 , wherein the body defines a helical inner bore comprising alternating lobes and chambers claim 1 , wherein a radial thickness of the body is greater at the lobes than at the chambers claim 1 , and wherein the rubber forming an inner surface at the lobes is less cured than the rubber forming an inner surface at the chambers.7. The stator of claim 6 , wherein the at least a portion of the rubber that is at most about 90% cured is at the inner ...

EQUAL-WALLED GEROTOR PUMP FOR WELLBORE APPLICATIONS

One example of a gerotor pump includes an inner rotor comprising multiple teeth, the inner rotor configured to rotate about a first longitudinal gerotor pump axis. The gerotor pump also includes a hollow outer rotor including an outer surface and an inner surface having substantially identical contours, the inner surface configured to engage with the multiple teeth and to rotate about a second longitudinal gerotor pump axis. The pump includes a pump housing within which the inner rotor and the outer rotor are disposed, wherein the outer surface of the outer rotor defines gaps between the pump housing and the outer rotor. 1. A method comprising: an inner rotor comprising a plurality of teeth, the inner rotor configured to rotate about a first longitudinal gerotor pump axis; and', 'a hollow outer rotor comprising an outer surface and an inner surface having substantially identical contours, the inner surface configured to engage with the plurality of teeth and to rotate about a second longitudinal gerotor pump axis; and, 'positioning a gerotor pump in a wellbore, the gerotor pump comprisingpumping wellbore fluid through the wellbore using the gerotor pump.2. The method of claim 1 , wherein the gerotor pump comprises a pump housing within which the inner rotor and the outer rotor are disposed claim 1 , wherein the outer surface of the outer rotor defines gaps between the pump housing and the outer rotor claim 1 , and wherein the method further comprises flowing fluid through the gaps.3. The method of claim 1 , wherein the fluid comprises wellbore fluid.4. The method of claim 1 , wherein the fluid comprises cooling fluid.5. The method of claim 1 , wherein a direction of flow of the cooling fluid in the gaps is either concurrent with or counter-current to a direction of flow of the wellbore fluid through the pump.6. The method of claim 1 , wherein positioning the gerotor pump in the wellbore comprises positioning the gerotor pump downhole inside the wellbore.7. The ...

FLOW-THROUGH PULSING ASSEMBLY FOR USE IN DOWNHOLE OPERATIONS

A flow-through assembly for use in a downhole drilling string includes a Moineau-type motor, means for selectively activating the motor such as a ball catch component that selectively causes drilling fluid to enter into or bypass the motor, and a rotating variable choke assembly that is driven by a rotor of the motor. The choke assembly varies the flow rate of drilling fluid as rotation causes ports of the choke assembly to enter into and out of alignment with each other. In one embodiment, the choke assembly comprises a faceted rotary component including bypass ports on the facets of the component. In another embodiment, the choke assembly comprises a tapered rotary component that rotates in a complementarily tapered stationary component. 1a motor;means for selectively activating the motor; anda rotating variable choke assembly for varying a flow rate of drilling fluid passing therethrough, the rotating variable choke assembly comprising a rotary component and stationary component each having at least one cooperating port or channel that enters into and out of alignment as the rotary component is driven by the motor, when activated.. A flow-through assembly for use in a downhole drilling string, the flow-through assembly comprising: This application is a continuation of U.S. patent application Ser. No. 16/241,029, filed Jan. 7, 2019, which is a continuation of International Application No. PCT/CA2017/050828, filed Jul. 7, 2017, which claims priority to U.S. Provisional Application No. 62/359,683, filed Jul. 7, 2016, the entireties of which are incorporated herein by reference.The present disclosure relates to downhole drilling assemblies for use in horizontal and vertical drilling operations, and in particular valve control within a drilling string.In oil and gas production and exploration, downhole drilling can be accomplished with a downhole drill powered by a mud motor. The drilling fluid used to drive the motor also assists the drilling process in other ways, ...

Electric machine for downhole applications

Certain aspects of the subject matter described here can be implemented in a downhole-type electric submersible pump system. An electric machine can be disposed downhole in a wellbore. The electric machine is coupled to rotate with an impeller that can be disposed downhole in the wellbore. The electric machine includes a stator assembly with at least three stator sections axially arranged and spaced apart from each other along a longitudinal axis of the electric machine. The electric machine also includes a rotor assembly with at least three rotor sections arranged axially along the longitudinal axis of the electric machine. The rotor assembly is carried within and supported to rotate by the stator assembly

PUMP INTEGRATED WITH TWO INDEPENDENTLY DRIVE PRIME COVERS

A pump having at least two fluid drivers and a method of delivering fluid from an inlet of the pump to an outlet of the pump using the at least two fluid drivers. Each of the fluid drives includes a prime mover and a fluid displacement member. The prime mover drives the fluid displacement member to transfer fluid. The fluid drivers are independently operated. However, the fluid drivers are operated such that contact between the fluid drivers is synchronized. That is, operation of the fluid drivers is synchronized such that the fluid displacement member in each fluid driver makes contact with another fluid displacement member. The contact can include at least one contact point, contact line, or contact area. 188.-. (canceled)89. A pump comprising:a casing defining an interior volume, the casing including a first port in fluid communication with the interior volume, and a second port in fluid communication with the interior volume;a first gear disposed within the interior volume, the first gear having a first gear body and a plurality of first gear teeth;a second gear disposed within the interior volume, the second gear having a second gear body and a plurality of second gear teeth projecting radially outwardly from the second gear body, the second gear is disposed such that a second face of at least one tooth of the plurality of second gear teeth aligns with a first face of at least one tooth of the plurality of first gear teeth;a first motor that rotates the first gear about a first axial centerline of the first gear in a first direction to transfer a fluid from the first port to the second port; anda second motor that rotates the second gear, independently of the first motor, about a second axial centerline of the second gear in a second direction to contact the second face with the first face and to transfer the fluid from the first port to the second port,wherein the first motor is an outer-rotor motor disposed in the interior volume and comprising a first rotor ...

VANE PUMP DEVICE

An embodiment provides an inner plate including a high pressure side discharge through-hole through which a working fluid is discharged from a pump chamber; an inner-plate high pressure side through-hole through which the working fluid is guided to a columnar groove of a vane groove; and an inner-plate high pressure side recess portion that is a groove facing a columnar groove among multiple columnar grooves. An outer plate includes a high pressure side upstream recess portion; a high pressure side downstream recess portion; and a high pressure side connection recess portion through which the high pressure side upstream recess portion and the high pressure side downstream recess portion are connected to each other, and which has a passage area smaller than that of the high pressure side downstream recess portion. 1. A vane pump device comprising:multiple vanes;a rotor that includes vane grooves which are recessed from an outer circumferential surface of the rotor in a radial direction of rotation such that the vanes are supported in such a way as to be capable of moving in the radial direction of rotation, and that rotates due to a rotating force received from a rotation shaft;a cam ring that includes an inner circumferential surface facing the outer circumferential surface of the rotor, and is disposed to surround the rotor;a one side member that is disposed on one end portion side of the cam ring in a direction of a rotation axis to cover an opening of the cam ring; andanother side member that is disposed on another end portion side of the cam ring in the direction of the rotation axis to cover an opening of the cam ring, a one side first through-hole through which a working fluid is discharged from a pump chamber,', 'a one side second through-hole through which the working fluid discharged from the one side first through-hole is guided to a center side space that is a space of a vane groove which is positioned at a rotation center side, and', 'a one side groove ...

Vane pump device

An embodiment provides a vane pump device including a rotation shaft; and a pump unit that discharges oil at multiple discharge pressures, discharges oil to one side in an axial direction of the rotation shaft at a first discharge pressure of the multiple discharge pressures, and discharges oil to the other side in the axial direction at a second discharge pressure of the multiple discharge pressures.

VANE PUMP DEVICE

An embodiment provides a vane pump device including a pump unit that includes a high pressure side discharge through-hole which discharges oil, and a low pressure side discharge through-hole which discharges oil; and a housing which accommodates the pump unit, and includes a high pressure side discharge passage that is formed between the high pressure side discharge through-hole and a high pressure side discharge outlet through which oil discharged from the high pressure side discharge through-hole of the pump unit is discharged to the outside, and a cover low pressure side discharge passage and a case low pressure side discharge passage that are formed between the low pressure side discharge through-hole and a low pressure side discharge outlet through which oil is discharged to the outside, and that are shorter than the high pressure side discharge passage. 1. A vane pump device comprising: a first discharge portion which discharges a working fluid of a first amount, and', 'a second discharge portion which discharges the working fluid of a second amount larger than the first amount; and, 'a pump unit that includes'} a first passage which is formed between the first discharge portion and a first discharge outlet through which the working fluid discharged from the first discharge portion of the pump unit is discharged to the outside, and', 'a second passage that is formed between the second discharge portion and a second discharge outlet through which the working fluid discharged from the second discharge portion is discharged to the outside, and that is shorter than the first passage., 'a housing that accommodates the pump unit, and includes'}2. The vane pump device according to claim 1 ,wherein the second discharge portion of the pump unit is positioned closer to the second discharge outlet than the first discharge outlet.3. The vane pump device according to claim 1 ,wherein a direction in which the working fluid is discharged to the outside from the first ...

VANE PUMP DEVICE

An embodiment provides a vane pump device includes a pump unit that includes a high pressure side discharge through-hole which discharges oil at a first discharge pressure, and a low pressure side discharge through-hole which discharges oil at a second discharge pressure lower than the first discharge pressure; and a housing which accommodates the pump unit, and includes a high pressure side discharge outlet through which oil discharged from the high pressure side discharge through-hole of the pump unit is discharged to the outside, and a low pressure side discharge outlet through which oil discharged from the low pressure side discharge through-hole is discharged to the outside, and in which the high pressure side discharge outlet and the low pressure side discharge outlet are formed to face the same direction. 1. A vane pump device comprising: a first discharge portion which discharges a working fluid at a first discharge pressure, and', 'a second discharge portion which discharges the working fluid at a second discharge pressure lower than the first discharge pressure; and, 'a pump unit that includes'} a first discharge outlet through which the working fluid discharged from the first discharge portion of the pump unit is discharged to the outside, and', 'a second discharge outlet through which the working fluid discharged from the second discharge portion is discharged to the outside, wherein the first discharge outlet and the second discharge outlet are formed to face the same direction., 'a housing which accommodates the pump unit, and includes'}2. The vane pump device according to claim 1 , wherein a suction inlet through which the working fluid is suctioned into the pump unit is formed in the housing to face the same direction as the direction of the first discharge outlet and the second discharge outlet.3. The vane pump device according to claim 2 , a bottomed cylindrical case, and', 'a cover covering an opening of the case, and, 'wherein the housing ...