СПОСОБ РАБОТЫ ДВУХСТУПЕНЧАТОГО ЭЛЕКТРОНАСОСНОГО АГРЕГАТА

Изобретение относится к машиностроительной гидравлике, конкретно - к способу работы электронасосного агрегата (ЭНА) для систем терморегулирования самолетов и космических аппаратов. Способ работы ЭНА включает обеспечение циркуляции жидкости посредством электродвигателя (ЭД) с герметично разделенными корпусами из титана. Циркуляцию обеспечивают в следующей последовательности: входной патрубок, вход и выход правого рабочего колеса, идущий на один из переводных каналов, вход и выход левого рабочего колеса, идущий на другой переводной канал, выходной патрубок. Циркуляцию осуществляют относительно диафрагмы с герметично соединенным ее внешним периметром с обоймой, по герметичным составным каналам, один переводной канал выполняют на участках обоймы и втулки и соединяют им выход рабочей полости правого колеса и вход рабочей полости левого колеса, другой переводной канал выполняют на участках обоймы и корпуса ЭНА и соединяют им выход рабочей полости левого колеса и выходной патрубок корпуса ЭНА.

КОРПУСНО-СЕКЦИОННЫЙ НАСОС С УСТРОЙСТВОМ ДЛЯ ВЫПУСКА ВОЗДУХА, А ТАКЖЕ СООТВЕТСТВУЮЩИЙ СПОСОБ

Группа изобретений касается конструкции циркуляционного насоса и способа его гидравлического испытания. Насос содержит кожух (1) и по меньшей мере один корпус (5) секции, который отделяет внутреннюю камеру (9) сжатия от внешней камеры (10) сжатия. В корпусе (5) секции установлено по меньшей мере одно устройство (8) для выпуска воздуха. Устройство (8) для выпуска воздуха содержит элемент (13) для разблокировки или для блокирования средообмена между внутренней камерой (9) сжатия и внешней камерой (10) сжатия. Изобретения направлены на создание надежного и экономичного в эксплуатации простого в сборке насоса, проведение гидравлических испытаний которого возможно в собранном состоянии. 2 н. и 11 з.п. ф-лы, 2 ил.

МНОГОСТУПЕНЧАТЫЙ ЦЕНТРОБЕЖНЫЙ НАСОС С ИНТЕГРАЛЬНЫМИ ИЗНОСОСТОЙКИМИ УПОРНЫМИ ОСЕВЫМИ ПОДШИПНИКАМИ

Группа изобретений относится к скважинным насосам. Многоступенчатый центробежный насос содержит корпус, вращающийся вал и первую и вторую ступени насоса. Первая и вторая ступени содержат соответственно первый и второй направляющие аппараты, соединенные с корпусом, и первое и второе рабочие колеса, соединенные с валом. Насос дополнительно содержит интегральную систему осевой нагрузки и опоры, содержащую по меньшей мере одну втулку направляющего аппарата и по меньшей мере один подшипник рабочего колеса. Втулка и подшипник совместно обеспечивают возможность независимого осевого перемещения первого и второго рабочих колес. Интегральная система также содержит втулку направляющего аппарата, расположенную внутри второго направляющего аппарата и имеющую центральный проход, подшипники верхнего и нижнего по потоку рабочих колес, соединенные с валом соответственно смежно с первым и вторым колесом. При этом подшипник нижнего по потоку колеса имеет центральный цилиндр, который проходит внутри центрального ...

Рабочее колесо центробежного многоступенчатого насоса

Полезная модель относится к области центробежных гидравлических машин и может быть использована в добывающей промышленности, а также сельском хозяйстве и для бытовых нужд. Технический результат, на достижение которого направлена полезная модель, заключается в улучшении массогабаритных характеристик рабочего колеса центробежного многогоступенчатого насоса с сопутствующим сохранением его КПД. Сущность полезной модели заключается в том, что рабочее колесо центробежного многоступенчатого насоса содержит основной и покрывной диски, между которыми расположены лопатки, при этом проточная часть рабочего колеса имеет перегиб и обратный уклон и отличается тем, что величина угла между касательной, проходящей через точку перегиба проточной части рабочего колеса, и поперечной плоскостью составляет от 21 до 45°, 10 з.п. ф-лы, 2 фиг.

МНОГОСТУПЕНЧАТЫЙ ЦЕНТРОБЕЖНЫЙ НАСОС, ИМЕЮЩИЙ СТЯЖНЫЕ АНКЕРЫ, ВЫПОЛНЕННЫЕ ИЗ ЛИСТОВОГО МЕТАЛЛА

Изобретение касается многоступенчатого центробежного насоса. Насос имеет опорную часть (2) и головную часть (9), между которыми встроены насосные ступени. Головная часть (9) и опорная часть (2) соединены стяжными анкерами (11). Анкеры (11) одним концом зафиксированы на головной части (9), другим концом на опорной части (2). Стяжные анкеры (11) имеют на одном конце резьбу (14), которой они притянуты к головной части (9). На другом конце (12) анкеры (11) имеют по меньшей мере один выступ (31), которым они по меньшей мере в направлении (22) растяжения с геометрическим замыканием зафиксированы на головной части (9) или к опорной части (2). Стяжные анкеры (11) образованы по меньшей мере на отдельных участках, выполнены из листового металла. Так выступ, образованный частью (33), выполнен из листового металла. Изобретение направлено на усовершенствование насоса в отношении стяжных анкеров и их крепления. 17 з.п. ф-лы, 19 ил.

ГОРИЗОНТАЛЬНАЯ МНОГОСТУПЕНЧАТАЯ СЕКЦИОННАЯ ЦЕНТРОБЕЖНАЯ НАСОСНАЯ УСТАНОВКА

Изобретение предназначено для закачки воды в нефтяные пласты и поддержания внутрипластового давления и в качестве питательного насоса на нефтяных месторождениях. Насосная установка включает горизонтальный многоступенчатый секционный центробежный насос с цилиндрическим секционным корпусом, входной торцевой и напорной крышками. Вал установлен в опорных сферических двухрядных роликовых радиально-упорных подшипниках и имеет торцевые уплотнения, размещенные во входной и торцевой крышках. Корпус выполнен в виде двух отдельных частей, в каждой их которых размещены рабочие колеса и направляющие аппараты, а напорная крышка установлена между двумя частями корпуса. Насос снабжен переводной торцевой крышкой для перевода жидкости из первой части корпуса во вторую через переводные каналы, выполненные в напорной и переводной крышках заодно с ними. В переводной крышке размещено дополнительное торцевое уплотнение. Колеса в первой и второй частях корпуса расположены зеркально друг другу относительно напорной ...

УЗЕЛ ДЕТАЛЕЙ РАБОТАЮЩЕЙ НА ТЕКУЧЕЙ СРЕДЕ ЭНЕРГОМАШИНЫ, СПОСОБ МОНТАЖА

Изобретение относится к способу монтажа и узлу (А) деталей работающей на текучей среде энергомашины (FEM), в частности турбокомпрессора (TCO), с продольной осью (X). Для особенно простого и точного монтажа предусмотрено, что узел включает в себя внутренний пучок (IB) для расположения во внешнем корпусе (OC) работающей на текучей среде энергомашины (FEM), вставку (LPU) низкого давления работающей на текучей среде энергомашины (FEM) и по меньшей мере одну крышку (COV) работающей на текучей среде энергомашины (FEM) для аксильно торцевого закрывания внешнего корпуса (OC) по меньшей мере с одной торцевой стороны и отличается тем, что эти детали, аксиально соседствуя друг с другом, расположены в следующем порядке: крышка (COV), вставка (LPU) низкого давления, внутренний пучок (IB), при этом крышка (COV) и внутренний пучок (IB) разъемно закреплены на вставке (LPU) низкого давления с образованием транспортабельного блока (TU). 2 н. и 11 з.п. ф-лы, 5 ил.

Горизонтальная насосная установка с узлом первичной ступени и отдельным узлом ступени с напором на всасывающей стороне насоса (NPSH)

ПОДВОДНАЯ СОЕДИНИТЕЛЬНАЯ ТРУБОПРОВОДНАЯ ПЕРЕМЫЧКА С ПОГРУЖНЫМ ЭЛЕКТРОНАСОСОМ

... 1. Подводное устройство для перекачки флюида от одного стыковочного элемента ко второму стыковочному элементу системы подводной добычи, содержащее ! насосную соединительную трубопроводную перемычку, имеющую соединители на входном и выходном концах для обеспечения соединения между первым и вторым стыковочными элементами, ! погружную насосную установку, размещенную внутри насосной соединительной трубопроводной перемычки и имеющую впускное отверстие для приема флюида, проходящего от первого стыковочного элемента, и выпускное отверстие для подачи флюида ко второму стыковочному элементу, ! причем насосная соединительная трубопроводная перемычка выполнена с возможностью извлечения вместе с находящейся внутри нее насосной установкой из первого и второго стыковочных элементов. ! 2. Устройство по п.1, в котором часть насосной соединительной трубопроводной перемычки, содержащая насосную установку, наклонена внутри так, что входной конец находится на более низком уровне, чем выходной конец. ! 3. Устройство ...

КОРПУСНО-СЕКЦИОННЫЙ НАСОС С УСТРОЙСТВОМ ДЛЯ ВЫПУСКА ВОЗДУХА, А ТАКЖЕ СООТВЕТСТВУЮЩИЙ СПОСОБ

ЦЕНТРОБЕЖНЫЙ НАСОС СО СРЕДСТВОМ БАЛАНСИРОВКИ И СПОСОБ ДЛЯ БАЛАНСИРОВКИ ОСЕВЫХ УСИЛИЙ ЦЕНТРОБЕЖНОГО НАСОСА

ОБРАТНЫЙ КЛАПАН

ИЗНОСОУСТОЙЧИВЫЙ УПОРНЫЙ ПОДШИПНИК НАСОСА, ИМЕЮЩИЙ УМЕНЬШЕННОЕ СЕЧЕНИЕ

... 1. Центробежный насос, имеющий несколько ступеней, через которые проходит приводной вал и каждая из которых включает:диффузор, имеющий отверстие, через которое проходит вал;основание упорного подшипника, неподвижно установленное на входной части диффузора, окружающее отверстие диффузора, при этом основание упорного подшипника имеет в целом вогнутую опорную поверхность с выходной стороны;упорную пяту, имеющую в целом выпуклую входную часть, размещенную во вращающемся контакте с опорной поверхностью основания упорного подшипника, при этом упорная пята может смещаться вдоль оси вала и вращаться вместе с валом;рабочее колесо насоса, расположенное на выходе диффузора и приводимое во вращение валом; иупорную втулку, окружающую вал и вращающуюся вместе с ним, проходящую между рабочим колесом насоса и упорной пятой для передачи направленного вниз усилия на основание упорного подшипника.2. Центробежный насос по п.1, в котором основание упорного подшипника имеет в целом выпуклую входную сторону, ...

МНОГОСТУПЕНЧАТЫЙ ЦЕНТРОБЕЖНЫЙ НАСОС С ИНТЕГРАЛЬНЫМИ ИЗНОСОСТОЙКИМИ УПОРНЫМИ ОСЕВЫМИ ПОДШИПНИКАМИ

МУЛЬТИФАЗНЫЙ НАСОС

Lagerung einer Motorwelle einer Pumpe

Lagerung einer Motorwelle (2) eines Antriebsmotors (3) einer Pumpe (1), die ein Gehäuse aufweist, wobei sich die Motorwelle (2) in axialer Richtung von dem Antriebsmotor (3) durch das Gehäuse zu einem Pumpeneinlass (4) an dem Gehäuse erstreckt, und der Antriebsmotor (3) ein erstes integriertes Motorlager (5) aufweist, das in einem axialen Abstand L1 von dem Pumpeneinlass (4) vorgesehenen ist, wobei das Gehäuse ein zweites, von dem ersten Motorlager (5) in axialer Richtung über eine axiale Länge L2 beabstandetes Lager (6) aufweist, wobei das zweite Lager (6) als Radiallager ausgebildet ist und zwischen dem zweiten Lager (6) und dem Gehäuse ein Radialspalt S vorgesehen ist.

Mehrstufige Zentrifugalpumpe

Improvements relating to multi-stage centrifugal pumps

... 609,273. Centrifugal pumps. LEE, HOWL, & CO., Ltd., HOWL, C., and CLARK, C. B. March 11, 1946, No. 7479. [Class 110 (i)] In a multi-stage centrifugal pump, the walls and blades e of the diffuser passages are made integral with the casing halves so that the impeller is directly accessible when a casing half is removed. End thrust is balanced by arranging the four stages in two pairs on opposite sides of a central inlet c and the path of the liquid through the stages is shown by arrows.

Pump casing

Mechanism for providing motive force and for pumping applications

Provided in accordance with the principles of the present invention, in one preferred embodiment, is a pumping system (90). The system includes a housing (108) rotatably supporting a tube (112), with a plurality of magnets (116) located around the tube. The magnets create magnetic forces that cause the tube to rotate. The system further includes a pump (94) connected to the tube. When the tube rotates, the pump receives rotational mechanical energy, which operates the pump. Additionally, the tube and pump are connected in fluid communication such that fluid flows through the pump and the tube, when the system operates to pump a fluid. Preferably, the outlet end (98) of the pump connects to the tube in the system so that fluid first flows through the pump, and then through the tube.

Torque transfer system for centrifugal plumps

A torque transfer system for centrifugal pumps. A torque transfer system for a centrifugal pump includes a bearing sleeve above an impeller, the bearing sleeve and a hub of the impeller surrounding a rotatable shaft and coupled to the rotatable shaft by a key, the bearing sleeve having a stepped bottom edge, a top edge of the hub stepped inversely to the bottom edge of the bearing sleeve such that the top edge and the bottom edge interlock with a clearance between longitudinally extending portions of the interlocked edges, wherein upon reduction of torque transference between the key and the sleeve, the clearance closes such that the longitudinally extending portion of the stepped top edge contacts the longitudinally extending portion of the stepped bottom edge thereby maintaining rotation of the sleeve with the rotatable shaft. A centrifugal pump includes modules with a series of stepped, interlocked impellers.

Improvement in centrifugal pump

... 383,280. Centrifugal pumps. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Ingersoll-Rand Co. ; 15, Exchange Place, Jersey City, New Jersey, U.S.A.) July 29, 1931, No. 21684. [Class 110 (i).] In a two-stage pump comprising a lowpressure pump 16 and a high-pressure pump 18, a valve 50 is arranged on the inlet 22 of the pump 18 and is opened by the delivery pressure of the pump 16 acting through ports 60 on a spring-pressed piston 54 connected to the valve. If the fluid pressure fails, the valve closes until the pressure is built up to the desired minimum. The chamber 56 in which the piston works is connected by a pipe 64 to a condenser or to the pump inlet for the escape of leakage.

Improvements in centrifugal pumps

... 381,336. Centrifugal pumps. REES ROTURBO MANUFACTURING CO., Ltd. and CLARK, C. B., Wednesfield Road, Wolverhampton. Oct. 9, 1931, No. 28112. Addition to 280,120, [Class 110 (i), Centrifugal and screw fans &c.]. [Class 110 (i).] A multi-stage pump has impellers of the kind described in the parent Specification and each impeller A rotates in a chamber K substantially larger than itself. The chambers K are not provided with vanes, and the water passes from the peripheries of these chambers to the eye of the next impeller by passages L with vanes having outer tips nearly tangential to the peripheries of the chambers K, and having inner tips which are substantially radial. The liquid thus enters the impeller eyes in an axial direction. The impellers are held in the correct positions by sleeves C, the outer ends of which abut against split rings D in circumferential grooves E in the shaft. Packing glands J encircle the grooves to prevent leakage.

Surface pump assembly

Comprehensive evaluation method for flow-induced vibration performance of pump

Mechanism for providing motive force and for pumping applications

Improvements in or relating to multi-stage centrifugal pumps

... 1,043,494. Centrifugal pumps. PRVNI BRNENSKA STROJIRNA, ZAVODY KLEMENTA GOTTWALDA NARODNI PODNIK. March 16, 1965, No. 11068/65. Heading F1C. In a multi-stage centrifugal pump with the impellers mounted on a common driving shaft 1, the firststage impeller 2 is not keyed to the shaft but is journalled on the shaft through a plain bearing and driven from the shaft at a reduced speed through gearing 14, 16, 18, 13. Gear 13 is formed on a hollow shaft 3 journalled on two ball bearings and coupled at 19 to the extended hub of the impeller 2. Pumped liquid, tapped after the first stage through grooves 4 in a spacer, passes through the impeller bearing to cool and lubricate it and returns to the suction chamber 6 through holes 5. Any liquid leaking past a packing 8 between the shafts 1, 3 is discharged through holes 11. Spaces A, B are filled with cooling water.

HIGH PRESSURE CENTRIFUGAL PUMP AGGREGATE

Actuator for active chassis units of motor vehicles

Die Erfindung bezieht sich auf einen Aktuator für aktive Fahrwerke von Kraftfahrzeugen mit einer Elektroantriebsmaschine (1) und einer Pumpe (2). Um vorteilhafte Konstruktionsbedingungen zu schaffen, wird vorgeschlagen, dass die Pumpe (2) von der Elektroantriebsmaschine (1) ummantelt wird, dass die Pumpe (2) als hydraulische Kreiselpumpe mit zumindest einem ersten Laufrad (3) mit einem ersten Rotor (6), einem zweiten Laufrad (4) mit einem zweiten Rotor (7) und einem dritten Laufrad (5) mit einem dritten Rotor (8) ausgeführt ist. Aufgrund der Ummantelung der Pumpe (2) durch die Elektroantriebsmaschine (1) wird die insbesondere bei begrenzten Bauraumbudgets in Fahrwerken von Kraftfahrzeugen günstige Eigenschaft einer besonders kompakten und platzsparenden Einheit erzielt und die Elektroantriebsmaschine (1) wird durch ein durch die Pumpe (2) strömendes Fluid gekühlt. Im Vergleich zu Kolben- oder Flügelzellenpumpen etc. bewirkt der Einsatz einer als Kreiselpumpe ausgeführten Pumpe (2) weiterhin ...

TURBINE PUMP.

SIDE FLOW PUMP

Two stage sewage grinder pump

System for operating a hydraulically powered submersible pump

A system located in a subsea environment is disclosed comprising a submersible pump positioned in a well, a hydraulic motor that is operatively coupled to the submersible pump and a pressurized fluid supply pump that is positioned on or near a floor of the subsea environment and in fluid communication with the hydraulic motor.

COMPOSITE KNOCKDOWN PUMP

MULTISTAGE PUMP AND MANUFACTURING METHOD

MULTI-STAGE CENTRIFUGAL PUMP WITH MEANS FOR PULSE CANCELLATION

COMPOSITE KNOCKDOWN PUMP

ELECTRIC MOTOR PUMP FOR SWIMMING POOL MAINTENANCE

The invention concerns a dual pump, comprising an electric motor (18) including a drive shaft, the shaft including, at each of its axial ends, a shaft output (21, 22), and two pump impellers, each shaft output driving a respective pump impeller, one first of the pump impellers (23) operating at low pressure and high flow rate, and the second of the pump impellers (30) operating at higher pressure and lower flow rate. The water pumped by the second pump impeller (30) is drawn proximate the outlet of the first pump impeller (23) and returns to the inlet of the second pump impeller. The drawing point is situated in a low pressure pump chamber, upstream of the low pressure outlet (16). The invention is applicable to swimming pool maintenance.

ELECTRIC SUBMERSIBLE PUMPING UNIT

An electric submersible pump assembly with integral heat exchanger, high-speed selfaligning bearings, and dual bearing thrust chamber is described. The described pump assembly, modules, and components may be used for operating an electric submersible pump at high speeds as well as over a wide range of speeds and flowrates without replacing downhole equipment. The described pump assembly may be shorter than comparable pump assemblies and may be assembled offsite, thereby leading to faster and easier installation with less down time. By operating over a wide range of speeds, the disclosed pump assembly allows the operator to reduce overall inventory, reduce down time for the well, and avoid other complications associated with replacing a pump assembly or other downhole components.

PREDICTIVE PUMP STATION AND PIPELINE ADVANCED CONTROL SYSTEM

A method and controller for operating a pumping station. The method includes receiving (1102), by at least one controller (910, 952), sensor data (712) of a first pumping station (900) corresponding to a liquid being transported from the first pumping station (900). The method includes predicting (1104) arrival of the liquid, by the at least one controller (910, 952), at a second pumping station (900). The method includes executing (1106) one or more pump models (720), by the at least one controller (910, 952), according to the sensor data (712) to determine an optimal pumping configuration. The method includes operating (1108) one more pumps of the second pumping station (900), by the at least one controller (910, 952), according to the optimal pumping configuration.

ELECTRICALLY DRIVEN PUMP FOR THE MAINTENANCE OF SWIMMING POOLS

The invention concerns a dual pump, comprising an electric motor (18) including a drive shaft, the shaft including, at each of its axial ends, a shaft output (21, 22), and two pump impellers, each shaft output driving a respective pump impeller, one first of the pump impellers (23) operating at low pressure and high flow rate, and the second of the pump impellers (30) operating at higher pressure and lower flow rate. The water pumped by the second pump impeller (30) is drawn proximate the outlet of the first pump impeller (23) and returns to the inlet of the second pump impeller. The drawing point is situated in a low pressure pump chamber, upstream of the low pressure outlet (16). The invention is applicable to swimming pool maintenance.

AXIALLY SPLIT PUMP

An axially split pump for conveying a fluid is suggested having an axially split housing (2) that comprises a bottom part (21) and a cover (22), wherein the bottom part (21) has a first sealing surface (212) and a cover (22) has a second sealing surface (222), wherein the bottom part (21) and the cover (22) can be fastened to one another in such a way that the two sealing surfaces (212, 222) have a direct contact with one another, wherein a first sealing groove (213) for the reception of a first string-like sealing element (10) is provided in the sealing surfaces (212, 222), and a second sealing groove (214) is provided for the reception of a second string-like element (11), the second sealing groove (214) being connected to the first sealing groove (213) via an opening (20), and wherein a connection element (50) is provided in the opening (20) that has two lateral cut-outs (51) respectively for the reception of a string-like sealing element (10, 11), wherein the cut-outs (51) are arranged ...

SUBMERSIBLE PUMP COMPONENT, SUBMERSIBLE PUMP AND METHOD OF COATING A COMPONENT

A submersible pump component is provided. The component includes a substrate including an outer surface in a plurality of orientations, wherein a first portion of the outer surface is configured to be worn by a first wear mechanism, and a second portion of said outer surface is configured to be worn by a second wear mechanism. The component also includes at least one layer of a first coating applied to the outer surface, and at least one layer of a second coating applied over said first coating at said second portion of said outer surface. The first coating is configured to inhibit the first wear mechanism at the first portion of the outer surface, and the second coating is configured to inhibit the second wear mechanism at the second portion of the outer surface.

MULTI-STAGE HIGH PRESSURE FLANGED PUMP ASSEMBLY

A pump assembly (108) for use within a high pressure pumping system (100) includes housing (124), a head (128) and a base (126). The housing contains at least one centrifugal pump stage (130). The head (128) and base (126) are attached to the housing (124) with corresponding internal threaded connections (140,144). The head (128) and base (126) are further retained to the housing (124) with corresponding external flanged connections (138,142). The external flanged connections (138,142) provide redundant connections that reduce the risk of separation between the housing (124) and the head (128) and base (126).

SYNERGIC METHOD FOR HYDRODYNAMIC ENERGY GENERATION WITH NEUTRALIZED HEAD PRESSURE PUMP

A synergic method for hydrodynamic energy generation includes providing a system and method utilization for producing electrical power or mechanical rotational pumping energy for pumping water to high level reservoir or to feeding a decorative water fall, providing a multi compartment housing, pumping water via the housing, providing a first vertically aligned compartment within or beside the housing, mechanically coupling a first water wheel, situated at the bottom of first compartment, to pump shaft, generating by the first wheel mechanical rotational power, providing a second vertically aligned compartment mechanically coupling a second water wheel to a generator, generating electrical or mechanical rotational power, by the generator, providing a third vertically aligned compartment providing a fourth compartment, a pump or external jet for removing water from the fourth compartment, utilizing energy and conductively coupling the hydrodynamic energy generation system with the external ...

ABRASION-RESISTANT THRUST RING FOR USE WITH A DOWNHOLE ELECTRICAL SUBMERSIBLE PUMP

A multi-stage pump stack is disclosed herein wherein the multi-stage pump stack comprises a shaft, a diffuser disposed about the shaft, an impeller disposed within the diffuser, a first thrust ring disposed adjacent to the impeller, and a second thrust ring disposed adjacent to the diffuser. The first and second thrust rings are comprised of a material with a low friction coefficient. Systems and methods for distributing forces in the multi-stage pump stack are also disclosed herein.

MULTISTAGE CENTRIFUGAL PUMP WITH COMPRESSION BULKHEADS

A multistage centrifugal pump includes an upstream housing and a downstream housing. The upstream housing and the downstream housing each have a first end, a second end and a plurality of turbomachinery stages. Each of the plurality of turbomachinery stages includes a diffuser and an impeller. A compression bulkhead is connected between the second end of the upstream housing and the first end of the downstream housing. The compression bulkhead applies a compressive force to the diffusers within the upstream housing.

ESP WITH OFFSET LATERALLY LOADED BEARINGS

A submersible pumping system for use downhole, wherein the system includes a pump, a pump motor, a seal section, a shaft coupling the pump motor to the pump, and bearing assemblies for radially retaining the shaft in place that are offset with respect to an axis of the shaft. The offset bearing assemblies produce side loads in the shaft that reduce shaft vibration during use. The bearing assemblies can be a combination of symmetric and asymmetric assemblies set in an alternating pattern along the length of the shaft.

SUBMERSIBLE DISK-TYPE PUMP FOR VISCOUS AND SOLIDS-LADEN FLUIDS HAVING HELICAL INDUCER

A submersible pump assembly configured to manipulate the flow of fluids to achieve sufficient flow rate and fluid pressure to efficiently pump viscous or solids- laden fluid, while minimizing the risk of pump clogging and/or damage due to the solids content of the fluid. The submersible pump assembly comprising a cylindrical housing having an intake disposed at an upstream end for receiving viscous and/or solids-laden fluid and an outlet disposed at a downstream end opposite the intake for discharging the fluid to the surface. A rotating shaft extending through the cylindrical housing along a center axis of the housing and adapted to be driven by a submersible motor. A plurality of successive pumping stages disposed in a co-axial arrangement along the rotating shaft and a helical inducer coupled to the shaft between the intake and the plurality of pumping stages. The helical inducer comprising at least a single helical turn that directly converges into the plurality of pumping stages.

Perfectionnement dans les ventilateurs et les pompes centrifuges à plusieurs étages.

Mindestens drei hintereinander geschaltete Stufen aufweisende Kreiselmaschine zum Fördern von flüssigen oder gasförmigen Mitteln.

Kreiselmaschine, insbesondere Hochdruckheisswasserpumpe.

Mehrstufige Pumpe mit Gruppen von mehreren auf einer Welle befestigten Laufrädern.

Zwillingszentrifugalpumpe.

Groupe motopompe d'épuisement immergé

Mehrstufige Schleuderpumpe

Gehäuse mit Druckspirale für radiale Zentrifugalpumpen

Ein- oder mehrstufige selbstansaugende Pumpe

Mehrstufige Turbomaschine

Centrifugal pump

The centrifugal pump has two contrarotating pump sections (I, II). In the casing (1) there runs a flow connection (35) between an annular chamber (34) of the outlet stage (6) of the first pump section (I) and an annular chamber (36) of the second pump section (II). The annular chambers (34, 36) are delimited by the perimeter (2') of the inner block (2) and the inner wall (1') of the casing (1). Owing to this design, the inner block (2) has a small diameter and is of simple construction. ...

MULTI-LEVEL CENTRIFUGAL PUMP.

Centrifugal pump for waste water loaded with Feststoffanteilen.

Rotary pump for cryogenic liquids.

Eine rotierende direktangetriebene ein- oder mehrstufige Pumpe (5) mit Pumpenantrieb für cryogene Flüssigkeiten hat ein Pumpengehäuse (4) für die Pumpe und einen elektrischen Antriebsmotor (3) in einem Motorgehäuse (2) als Pumpenantrieb. Ein Zwischenstück (9) zwischen dem Pumpengehäuse (4) und dem Motorgehäuse (2) enthält eine Kupplung (10). Über die Kupplung (10) ist eine Motorachse (6) des Antriebsmotors (3) drehfest mit einer Pumpenachse (8) der ein- oder mehrstufigen Pumpe (5) verbunden. Die Motorachse (6) des Antriebsmotors (3) ist dabei in zwei Lagern (7) im Motorgehäuse (2) gelagert. Die zwei Lager (7) sind ungeschmierte Lager, die innere und äussere Laufringe (21, 22) mit Laufflächen aufweisen, zwischen denen keramische Rollkörper (20) angeordnet sind, wobei die Laufflächen eine chrom-basierte Beschichtung aufweisen.

CENTRIFUGAL MULTISTAGE ELECTRIC PUMP

Adjusting and balancing system of segmental multistage pump

Centrifugal pump

For axially separated turbine sealing device

AMBIVALENT CENTRIFUGAL PUMP

Machine centrifuges with only one body to output water, air or agents gas and comprising at least three stages combined in series

Multicellular centrifugal pump cross flow

MULTISTAGE PUMP AND MANUFACTURING METHOD

AMBIVALENT CENTRIFUGAL PUMP

MULTISTAGE PUMPS

Bearing housing for a flow machine and flow machine having a bearing housing

수축형 전단부를 포함하는 배럴 터보 기계

... 내부 수용 체적을 형성하는 원통형 내측 표면을 갖는 배럴 케이싱(1), 상기 내부 수용 체적 내로 수용되도록 되어 있는 원통형 형상의 번들(bundle; 5), 상기 내부 수용 체적을 폐쇄하기 위해 그리고 배럴 케이싱(1) 내부에 번들(5)을 유지하기 위해 번들(5)에 연결되는 원통형 커버(2), 상기 원통형 커버(2)와 함께 상기 배럴 케이싱(1)을 고정하도록 되어 있는 분리형 전단 링(3)을 포함하는 터보 기계(100)로서, 원통형 커버(2)의 원통형 외측 표면 및 배럴 케이싱(1)의 원통형 내측 표면에는 상기 전단 링(3)을 수용하도록 되어 있는 제1 둘레방향 홈(6) 및 제2 둘레방향 홈(4)이 마련되며, 상기 제1 둘레방향 홈(6)은 상기 분리형 전단 링(3)의 단면을 완전히 수용하도록 되어 있는 것인 터보 기계가 제시된다.

THE SHAFT ADAPTER FOR CONVERTING A PUMPING SYSTEM

Una bomba para usar en un sistema de bombeo motorizado que tiene un eje de bomba con una ranura para aro inferior y una ranura para aro superior. La bomba también incluye un adaptador inferior y un adaptador superior. El adaptador inferior posee un par de mitades del aro inferior configuradas para ajustarse dentro de la ranura para aro inferior y el adaptador superior posee un par de mitades del aro superior configuradas para ajustarse dentro de la ranura para aro superior. La bomba además incluye una pluralidad de etapas cada una de las cuales posee un difusor estacionario y un impelente rotativo. Los impelentes rotativos están conectados con el eje mediante una conexión enchavetada que permite que el impelente se desplace axialmente a lo largo del eje. También se divulga un método para convertir un eje de compresión en un eje de flotación que incluye los pasos de colocar un adaptador superior en la ranura para aro superior, colocando uno o varios impelentes sobre el eje, colocando uno ...

Impeller for centrifugal pumps

An impeller for centrifugal pumps has a first disk element, functionally arranged toward the inlet, which is coaxial to and faces a second disk element, which is functionally arranged toward the delivery and is connected rigidly to the first disk element by virtue of a series of angularly spaced vanes and is provided centrally with a means for fixing to a transmission shaft, The particularity of the present invention resides in that the impeller includes a series of openings formed in the substantially peripheral region of the second disk element, between pairs of adjacent vanes, substantially at the areas subjected to the greatest axial thrust.

COMPRESSOR PERFORMANCE ADJUSTMENT SYSTEM

A compressor performance adjustment system includes a compressor chassis defining an inlet passageway, a diffuser passageway coupled to the inlet passageway, and a return passageway extending from the diffuser passageway. At least one inlet vane is located in the inlet passageway. At least one diffuser vane is located in the diffuser passageway. At least one return vane is moveably coupled to the compressor chassis and located in the return passageway. Via a system of rods and actuators, the return vanes may be adjusted without disassembling the compressor chassis in order to adjust the flow incident on compressor components and adjust the performance of a compressor.

TWO STAGE SEWAGE GRINDER PUMP

A two-stage sewage grinder pump (10) having two impellers (30, 32) and a grinder (60) attached to the motor shaft (24). Preferably, both impellers are vortex impellers and are positioned between the grinder and the motor. The motor housing includes a discharge conduit (70) that is monolithic with the motor housing (20). An anti-siphon valve (71) is integral with the discharge conduit. An integral discharge flange (75) and check valve (78) are attached to the discharge conduit to connect the sewage grinder pump to a sewage out–let.

IMPROVED THRUST BEARING FOR MULTISTAGE CENTRIFUGAL PUMPS

A pump has a thrust bearing has a casing with an inlet port and a discharge port. A shaft is positioned within the pump. A thrust bearing is coupled to the shaft. A pressure alterable bearing cavity is located within the casing. The pressure alterable cavity allows the axial thrust on the shaft from the impellers to be counteracted. The thrust bearing has an annular seal coupled with respect to the casing disc is coupled to the shaft and positioned adjacent the seal and the disc have a gap therebetween. A feedback pipe couples the bearing cavity to the inlet port. As the axial thrust acting on the shaft changes, the gap between the seal and the disc also changes. The changing of the gap changes the pressure within the bearing cavity. The disc and thus the shaft are repositioned in response to the change in the bearing cavity pressure change.

Centrifugal fluid machine

At a volute casing of a centrifugal fluid machine, pressure pulsation and vibrating forces acting upon the diffuser or the volute casing are mitigated or cancelled so as to abate the noise from the centrifugal fluid machine. The fluid machine having an impeller 3 rotating about a rotating shaft 2 within a casing 1 and having a volute 12 fixed to the casing 1 is constructed such that radius of the vane trailing edge of the impeller 3 and radius of the volute tongue is varied in the direction of axis of rotation and inclinations, on a meridional plane, of the vane trailing edge of the impeller 3 and the leading edge of the volute tongue are set in the same orientation, thereby reduction in head and efficiency or occurrence of an axial thrust may be restrained to the extent possible to optimally abate the noise and pressure pulsation of the centrifugal fluid machine.

CENTRIFUGAL PUMPS

A multi-stage submersible centrifugal pump comprising a drive shaft having a plurality of plastic impellers mounted thereon for rotation therewith. Such impellers have hubs mutually engageable in stacked relation. A plurality of diffusers in stacked relation, one for each impeller, is provided with a diffuser plate having an annular embossment coaxially disposed with respect to a central opening in the plate. This annular embossment is engageable with similar annular embossment on the impeller which coaxially encircles the inlet opening therein, both embossments having radially extending sealing faces which are engageable with each other thereby to prevent recirculation of water between stages. The impeller hubs as well as the engageable annular embossments are formed of particular plastic materials, the two annular embossments being of different plastic materials which are non-fusible, lubricous, and have "cold flow" properties which permit deformation of at least one of the embossments ...

HYDRODYNAMIC MULTI-STAGE PUMP

HEAT EXCHANGE MODULE AND SERIAL PUMP THEREOF

A serial pump includes a pump body, a first impeller and a second impeller. A first rotor chamber, a second rotor chamber and a connecting channel are formed in the pump body. The first rotor chamber has a first outlet opening, the second rotor chamber has a second inlet opening, and the connecting channel is communicated between the first outlet opening and the second inlet opening. The first impeller is pivotally arranged in the first rotor chamber, and an outer periphery of the first impeller is arranged corresponding to the first outlet opening. The second impeller is pivotally arranged in the second rotor chamber, and a center of the second impeller is arranged corresponding to the second inlet opening. Accordingly, the first impeller and the second impeller are serially arranged.

Two stage sewage grinder pump

A two-stage sewage grinder pump ( 10 ) having two impellers ( 30, 32 ) and a grinder ( 60 ) attached to the motor shaft ( 24 ). Preferably, both impellers are vortex impellers and are positioned between the grinder and the motor. The motor housing includes a discharge conduit ( 70 ) that is monolithic with the motor housing ( 20 ). An anti-siphon valve ( 71 ) is integral with the discharge conduit. An integral discharge flange ( 75 ) and check valve ( 78 ) are attached to the discharge conduit to connect the sewage grinder pump to a sewage outlet.

CENTRIFUGAL WELL PUMP WITH THREADEDLY COUPLED DIFFUSERS

A well pump includes a plurality of diffusers, wherein each diffuser comprises a first threaded coupling on one longitudinal end and a second threaded coupling on an opposed longitudinal end. An impeller is disposed in each diffuser. The plurality of diffusers are coupled end to end to form a pump housing, in which the first threaded coupling on one diffuser is threadedly engaged to the second threaded coupling on adjacent diffuser.

COMPRESSOR PERFORMANCE ADJUSTMENT SYSTEM

ПОДВОДНОЕ УСТРОЙСТВО (ВАРИАНТЫ) И СПОСОБ ПЕРЕКАЧКИ СКВАЖИННОГО ФЛЮИДА

Группа изобретений относится к нефтяной и газовой промышленности, в частности к подводным системам эксплуатации скважин. Устройство содержит насосную соединительную трубопроводную перемычку, имеющую соединители на входном и выходном концах для обеспечения соединения между первым и вторым стыковочными элементами, погружную насосную установку, размещенную внутри трубопроводной перемычки и имеющую впускное отверстие для приема флюида, проходящего от первого стыковочного элемента, и выпускное отверстие для подачи флюида ко второму стыковочному элементу. Насосная перемычка выполнена с возможностью извлечения вместе с находящейся внутри нее насосной установкой из первого и второго стыковочных элементов. Повышается производительность добычи флюида, повышается надежность. 3 н. и 10 з.п. ф-лы, 4 ил.

УЗЕЛ РАБОЧЕГО КОЛЕСА ДЛЯ ЦЕНТРОБЕЖНЫХ НАСОСОВ

Группа изобретений относится к области насосостроения. Узел рабочего колеса для центробежных насосов содержит диски меньшего и большего диаметра, расположенные коаксиально по отношению к оси вращения и обращенные друг к другу с образованием промежуточного пространства. Диски соединены лопастями, расположенными радиально в упомянутом промежуточном пространстве, и в центре снабжены крепежным средством для закрепления на валу трансмиссии, вращаемом вокруг оси вращения. Узел рабочего колеса содержит профилированные лопатки, которые выступают радиально из периферийной области диска меньшего диаметра. Профилированные лопатки расположены на упомянутых лопастях и имеют трапецеидальную форму, а диск большего диаметра имеет круговую периферию. Изобретения направлены на уменьшение осевых усилий и одновременное обеспечение максимальной эффективности, а также предохранение подшипников двигателя. 4 н. и 9 з.п. ф-лы, 10 ил.

МНОГОСТУПЕНЧАТЫЙ ФЛАНЦЕВЫЙ НАСОСНЫЙ УЗЕЛ ВЫСОКОГО ДАВЛЕНИЯ

Насосный узел (108) для использования в насосной установке высокого давления содержит корпус (124), переднюю часть (128) и основание (126). Корпус содержит по меньшей мере одну ступень (130) центробежного насоса. Передняя часть (128) и основание (126) прикреплены к корпусу (124) соответствующими внутренними резьбовыми соединениями (140, 144). Передняя часть (128) и основание (126) дополнительно прикреплены к корпусу (124) соответствующими наружными фланцевыми соединениями (138, 142). Наружные фланцевые соединения (138, 142) обеспечивают дублирующие соединения, уменьшающие опасность возникновения отделения между корпусом (124) и передней частью (128), а также корпусом (124) и основанием (126). 3 н. и 16 з.п. ф-лы, 6 ил.

МНОГОСТУПЕНЧАТЫЙ НАСОС СО СВОЙСТВАМИ УЛУЧШЕННОЙ БАЛАНСИРОВКИ НАПОРА

Многоступенчатый насос, содержащий первую ступень и вторую ступень, причем каждая ступень имеет рабочее колесо, расположенное на роторе насоса, при этом каждое рабочее колесо имеет сторону ступицы и сторону лопаточного пространства, и каждое рабочее колесо выполнено с возможностью перекачивания жидкости через насос, который прикладывает осевую напорную нагрузку, вызванную разностью давлений в осевом направлении от стороны ступицы к стороне лопаточного пространства каждого рабочего колеса; и кожух первой и второй ступеней насоса, при этом каждый кожух выполнен с образованием оболочки кожуха, содержащей компоненты первой ступени и второй ступени, включая каждое рабочее колесо, а также выполнен с одним или более отверстиями кожуха насоса, выполненными в нем и позволяющими протекать через кожух насоса по меньшей мере некоторому количеству жидкости, перекачиваемой изнутри оболочки кожуха наружу, чтобы существенно снижать осевую напорную нагрузку, вызванную разностью давлений в осевом направлении ...

Pump motor combination

A pumping apparatus includes a housing having an inlet at a first end and an outlet at an opposite second end. An encapsulated stator defines an opening and is supported by the housing. A pressure plate includes diffuser vanes formed as part of the pressure plate. The pressure plate is formed as part of the encapsulated stator. A rotor is positioned at least partially within the opening and is rotatable with respect to the stator and an impeller is coupled to the rotor and cooperates with the pressure plate and the housing to pump a fluid from the inlet to the outlet in response to rotation of the rotor.

Impeller vane with leading edge enhancement

A centrifugal pumping system having a stack of impellers and diffusers for pressurizing fluid. The impellers are rotated by a motor for pressurizing and lifting fluid from within a wellbore. Undulating profiles are provided on leading edges of the impellers for inducing turbulence in the fluid being pumped. Increasing turbulence better homogenizes the fluid, so that choked flow is avoided when different density components are present in the fluid. Reducing the possibility of choked flow increases pump efficiency and lift capacity.

DURABLE PUMPS FOR ABRASIVES

Durable pumps for abrasives are provided. An example centrifugal pump stage for subsurface operation has a thrust washer located inside the circumference of an outboard clearance seal between an impeller shroud and the diffuser. Relocation of the thrust washer allows the clearance seal to protect the thrust washer from abrasives. A centrifugal action of an outboard seal lip effects a separation of the particles from the fluid nearest the gap of the outboard seal and drives the particles away from the gap of the outboard seal. When an abrasive particle in the leakage flow does clear the outboard seal, the particle is readily flushed across the thrust washer by the leakage flow to the central fluid inlet to prevent wear of the thrust washer. In an implementation, the inside diameter of the thrust washer is approximately flush with the bore of a central fluid inlet of the pump stage. 1. A pump stage for application in a subsurface hydrocarbon well , comprising:a diffuser;an impeller;a thrust washer; andan outboard seal formed between a surface of the impeller and a first surface of the diffuser and located radially outward from an outside periphery of the thrust washer with respect to a central axis of the pump stage.2. The pump stage of claim 1 , wherein the outboard seal protects a pump component from particles in a leakage flow of a fluid being pumped claim 1 , wherein the pump component is selected from a group consisting of the thrust washer and a balance ring seal.3. The pump stage of claim 1 , further comprising an outboard seal lip of the impeller;wherein a surface of the outboard seal lip at an outside diameter of the outboard seal lip engages a second surface of the diffuser to prevent particles in a fluid being pumped from bypassing a centrifugal action of the outside periphery of the outboard seal lip.4. The pump stage of claim 3 , wherein when the impeller rotates a centrifugal action of the outboard seal lip impels a fluid near a gap of the outboard seal ...

System for the Heating and Pumping of Fluid

A fluid heating and pumping system comprising a housing that has an inlet and outlet opening as well as a plurality of turbine chambers. Each of the turbine chambers has: an inlet end, outlet end, is mounted to a driveshaft, a stator and rotor, and is constructed to create a circuitous flow path for fluid flow. Each of the rotors is: designed to move the fluid through the housing, and has a plurality of rotor vanes with each having a fin at the inlet end. The fin extends past the plane of an adjacent rotor vane to extend the circuitous flow path through the rotors. The fins, shearing plane, and outlet orifice all create thermal energy as the fluid is transferred along and between the rotor and stator vanes, through the shearing plane and between the adjacent turbine chambers as the fluid flows.

Low flow-high pressure centrifugal pump

Low flow centrifugal pump that develops more than 25 percent greater pressure than equivalent standard type spiral impellers with circular casings.

MULTISTAGE CENTRIFUGAL PUMP WITH INTEGRAL ABRASION-RESISTANT AXIAL THRUST BEARINGS

A multistage centrifugal pump includes a housing, a rotatable shaft and first and second turbomachinery stages. The first turbomachinery stage includes a first diffuser connected to the housing, a first impeller connected to the rotatable shaft. The second turbomachinery stage includes a second diffuser connected to the housing and a second impeller connected to the rotatable shaft. The multistage centrifugal pump further includes an integral axial load and bearing system that includes at least one diffuser bushing and at least one impeller bearing. The integral axial load and bearing system permits the independent axial movement of the first and second impellers. The integral axial load and bearing system also provides an opposite force to up-thrust and down-thrust produced by the first and second turbomachinery stages. 1. A multistage centrifugal pump comprising:a rotatable shaft;an upstream impeller connected to the rotatable shaft;a stationary diffuser;a downstream impeller connected to the rotatable shaft; and a diffuser bushing contained within the stationary diffuser;', 'an upstream impeller bearing connected to the rotatable shaft; and', 'a downstream impeller bearing connected to the rotatable shaft., 'an integral axial load and bearing system, wherein the integral axial load and bearing system comprises2. The multistage centrifugal pump of claim 1 , wherein the diffuser bushing comprises a central interior passage and the upstream impeller bearing comprises a central cylinder that extends inside the central interior passage of the diffuser bushing.3. The multistage centrifugal pump of claim 2 , wherein the downstream impeller bearing comprises a central cylinder that extends inside the central interior passage of the diffuser bushing.4. The multistage centrifugal pump of claim 3 , wherein the integral axial load and bearing system further comprises a gap within the interior of the diffuser bushing between the central cylinder of the upstream impeller ...

Ring section pump having intermediate tie rod combination

A ring section pump features a low-pressure end configured to receive fluid to be pumped into the ring section pump; a high-pressure end configured to provide the fluid to be pumped from the ring section pump; and an intermediate tie rod combination having a intermediate flange with upper tie rods configured to couple together the intermediate flange and the high-pressure end and with lower tie rods configured to couple together the intermediate flange and the low-pressure end. The low-pressure end has an inlet flange; the high-pressure end has an outlet/discharge flange; and the upper tie rods couple together the intermediate flange and the outlet/discharge flange and the lower tie rods couple together the intermediate flange and the inlet flange.

Two-Stage Centrifugal Pump

A two-stage centrifugal pump comprising: a first stage provided with a first impeller mounted on a first shaft and a second stage provided with a second impeller mounted on a second shaft distinct from said first shaft; and hydraulically connected to the first stage, and the stages mounted in a single support body, provided with a first chamber and a second chamber in which said first impeller and respectively said second impeller are contained; said support body comprises a case made in a single body therewith and provided with a first cavity and a second cavity that define respective portions of said first chamber and said second chamber; in at least one of either said first cavity or said second cavity one or more adaptors are mounted, to adapt the geometry of the first chamber and/or the second chamber to the type and size of impeller adopted. 1. A two-stage centrifugal pump comprising:a first stage provided with a first impeller; anda second stage provided with a second impeller and hydraulically connected to the first stage;the first impeller being mounted on a first shaft and the second impeller being mounted on a second shaft distinct from said first shaft;wherein the first stage and the second stage are located in a support body, the support body being provided with a first chamber and a second chamber in which the respective first impeller and the second impeller are contained; andwherein the support body comprises a single casing provided with a first cavity and a second cavity that each define respective portions of said first chamber and said second chamber; andwherein in at least one of either the first cavity or the second cavity, one or more adaptors are mounted, in use to adapt the geometry of the first chamber and/or the second chamber to the type and size of impeller adopted.2. A pump according to claim 1 , wherein said first shaft and said second shaft have respective axes of rotation arranged parallel to each other.3. A pump according to either ...

Method for manufacturing a can

A submersible pump assembly includes an electric motor ( 1 ) and a centrifugal pump, which is driven by the electric motor ( 1 ). A rotor ( 4 ) formed of plastic or composite material which is manufactured in the extrusion or pultrusion method.

PREDICTIVE PUMP STATION AND PIPELINE ADVANCED CONTROL SYSTEM

A method and controller for operating a pumping station. The method includes receiving (), by at least one controller (), sensor data () of a first pumping station () corresponding to a liquid being transported from the first pumping station (). The method includes predicting () arrival of the liquid, by the at least one controller (), at a second pumping station (). The method includes executing () one or more pump models (), by the at least one controller (), according to the sensor data () to determine an optimal pumping configuration. The method includes operating () one more pumps of the second pumping station (), by the at least one controller (), according to the optimal pumping configuration. 120-. (canceled)21. A method , comprising:receiving, by at least one controller, sensor data of a first pumping station corresponding to a liquid being transported from the first pumping station, wherein type and characteristics of the liquid being transported vary over time;predicting arrival of the liquid, by the at least one controller, at a second pumping station;fluidly coupling the first pumping station to the second pumping station through a pipeline;executing one or more pump models, by the at least one controller, according to the sensor data to determine an optimal pumping configuration; andoperating one more pumps of the second pumping station, by the at least one controller, according to the optimal pumping configuration,wherein the predicting of the arrival of the liquid at the second pumping station is based at least on the sensor data, a timestamp of the sensor data and a model of the pipeline including a steady-state model and a transient hydraulic model of the pipeline.22. The method of claim 21 , wherein the at least one controller is a controller of a station control system of the second pumping station.23. The method of claim 21 , wherein the at least one controller is a controller of a control system that controls a plurality of pumping stations.24. ...

PUMP FOR THE CONVEYANCE OF A FLUID WITH VARYING VISCOSITY

A pump includes a housing having an inlet and an outlet configured to convey fluid, an impeller configured to convey the fluid from the inlet to the outlet, the impeller being arranged on a rotatable shaft, and a balance drum configured to relieve axial thrust. The balance drum includes a rotor rotationally fixedly connected to the shaft, the rotor having a high and low pressure sides, a stator stationary with respect to the housing, a relief passage extending between the rotor and the stator from the high pressure side up to the low pressure side of the rotor, a return passage connecting the low pressure side of the rotor to the inlet. An intermediate passage opens into the relief passage between the high pressure side and the low pressure side of the rotor. A blocking member is configured to influence the flow through the intermediate passage. 1. A pump for conveying a fluid with varying viscosity , comprising:a housing having an inlet and an outlet configured to convey the fluid;at least one impeller configured to convey the fluid from the inlet to the outlet, the impeller being arranged on a rotatable shaft; anda balance drum configured to relieve axial thrust, the balance drum comprising a rotor rotationally fixedly connected to the shaft, the rotor having a high pressure side and a low pressure side, a stator configured to be stationary with respect to the housing, and a relief passage extending between the rotor and the stator from the high pressure side up to the low pressure side of the rotor;a return passage connecting the low pressure side of the rotor to the inlet;at least one intermediate passage opening into the relief passage between the high pressure side and the low pressure side of the rotor; anda blocking member configured to influence the flow through the intermediate passage.2. A pump in accordance with claim 1 , wherein the relief passage comprises a ring space surrounding the shaft and into which the intermediate passage opens.3. A pump in ...

SUBSEA PRESSURE BOOSTER

Subsea turbomachine for boosting the pressure of petroleum fluid flow from subsea petroleum productions wells or systems, comprising an electric motor and a compressor or pump driven by the electric motor, a fluid inlet and a fluid outlet, distinctive that the turbomachine comprises a pressure housing common for the electric motor or stator, and compressor, pump or rotor; a magnetic gear inside the common pressure housing for operative connection between the motor or stator and compressor, pump or rotor; and a partition inside the common pressure housing, arranged so as to separate a motor or stator compartment from a compressor, pump or rotor compartment. 115-. (canceled)16. A subsea turbomachine for boosting pressure of a petroleum fluid flow from subsea petroleum production wells or systems , the subsea turbomachine comprising:an electric motor comprising a rotor and a stator, the rotor and the stator being disposed in a motor compartment;a pump or compressor, disposed in a pump or compressor compartment;a petroleum fluid inlet to and a petroleum fluid outlet from the pump or compressor compartment;a common pressure housing for the motor compartment and the compressor or pump compartment;a magnetic gear inside the common pressure housing for operative connection between the electric motor and the compressor or the pump;an electric motor shaft and one pump or compressor shaft;wherein an outer ring of the magnetic gear is connected to the electric motor shaft and an inner ring of the magnetic gear is connected to the one pump or compressor shaft, or opposite;wherein the electric motor shaft and the one pump or compressor shaft are suspended in bearings; anda partition inside the common pressure housing, arranged between the inner and outer magnetic gear rings so as to separate the motor compartment hermetically from the pump or compressor compartment, wherein the subsea turbomachine has no external barrier fluid system or supply.17. The subsea turbomachine ...

Water Pump Cooler for CPU

a water pump cooler for CPU wherein coolant may efficiently perform heat exchange, comprising at least: at least a heat absorbing component, at least a heat-transfer water pump, at least a heat exchange component and connecting water pipes, wherein a closed loop is formed by the heat-transfer water pump, connecting water pipes and heat exchange component. The heat-transfer water pump is disposed above the heat absorbing component to serve as a cycle power source for the coolant. The heat-transfer water pump includes at least a water pump component, which includes at least a base plate and a plurality of rotor axial impeller sections and rotor centrifugal impeller sections. The coolant is driven by the rotor axial impeller sections to flow into the rotor centrifugal impeller sections, and is then thrown at a high speed by the rotor centrifugal impeller sections to the heat exchange component for efficient heat dissipation. In this way, the coolant may perform heat exchange at a high speed within the closed loop. 1. A water pump cooler for CPU wherein coolant may efficiently perform heat exchange , comprising at least: at least a heat absorbing component , at least a heat-transfer water pump , at least a heat exchange component and connecting water pipes , wherein a closed loop is formed by the heat-transfer water pump , connecting water pipes and heat exchange component; the heat-transfer water pump is disposed above the heat absorbing component to serve as a cycle power source for the coolant; the heat-transfer water pump includes at least a water pump component , which includes at least a base plate and a plurality of rotor axial impeller sections and rotor centrifugal impeller sections; the coolant is driven by the rotor axial impeller sections to flow into the rotor centrifugal impeller sections , and is then thrown at a high speed by the rotor centrifugal impeller sections to the heat exchange component for efficient heat dissipation; in this way , the coolant ...

A Multistage Pump With Axial Thrust Optimization

A multistage pump with axial thrust optimization is disclosed includes a pump discharge nozzle and a bypass system coupled to the pump discharge nozzle. The bypass system includes a throttle valve operatively coupled to the pump discharge nozzle, and a bypass line provided at the multistage pump. The bypass line is conducts flow from the throttle valve to a clearance gap of an axial thrust balancing arrangement. The throttle valve may be actuated to adjust a balancing flow through the bypass line such that pressure at the clearance gap is adjusted to increase and decrease fluid pressure at the clearance gap to balance axial thrust at different operating states of the multistage pump. 112-. (canceled)13. A multistage pump with axial thrust adjustment , comprising:a pump discharge nozzle; and a bypass line of the multistage pump, and', 'a throttle valve operatively coupled to the pump discharge nozzle, the throttle valve being configured to adjust a balancing flow through the bypass line, and, 'a bypass system coupled to the pump discharge nozzle, the bypass system including a clearance gap provided for balancing axial thrust in the multistage pump is configured to receive the balancing flow through the bypass line, and', 'the throttle valve is actuatable to adjust fluid pressure in the clearance gap to control an amount of axial thrust balancing as a function of an operating state of the multistage pump., 'wherein'}14. The multistage pump as claimed in claim 13 , whereinthe throttle valve is actuatable manually, automatically, semi-automatically, or one or more of manually, automatically and semi-automatically.15. The multistage pump as claimed in claim 13 , whereinthe throttle valve is actuatable to control the balancing flow operated such that the fluid pressure in the clearance gap is adjusted to a predetermined value based on the multistage pump operating state to reduce residual axial thrust.16. The multistage pump as claimed in claim 13 , whereinthe multistage ...

Pumping System Shaft Conversion Adapter

A pump for use in a motorized pumping system has a pump shaft with a lower ring groove and an upper ring groove. The pump also includes a lower adapter and an upper adapter. The lower adapter has a pair of lower ring halves configured to fit within the lower ring groove and the upper adapter has a pair of upper ring halves configured to fit within the upper ring groove. The pump further includes a plurality of stages that each have a stationary diffuser and a rotating impeller. The rotating impellers are connected to the shaft with a keyed connection that permits the impeller to axially travel along the shaft. Also disclosed is a method for converting a compression shaft to a floater shaft that includes the steps of placing an upper adapter into the upper ring groove, placing one or more impellers on the shaft, placing one or more standard spacers on the shaft and placing a lower adapter into the lower ring groove. 1. A pump for use in a motorized pumping system , the pump comprising:a shaft, wherein the shaft includes a lower ring groove and an upper ring groove;a lower adapter, wherein the lower adapter comprises a pair of lower ring halves configured to fit within the lower ring groove;an upper adapter, wherein the upper adapter comprises a pair of upper ring halves configured to fit within the upper ring groove; a stationary diffuser; and', 'a rotating impeller connected to the shaft with a keyed connection that permits the impeller to axially travel along the shaft., 'a plurality of stages, wherein each of the plurality of stages comprises2. The pump of claim 1 , wherein the lower adapter further comprises a lower adapter snap ring configured to hold the pair of lower ring halves together in the lower ring groove.3. The pump of claim 1 , wherein the upper adapter further comprises an upper adapter snap ring configured to hold the pair of upper ring halves together in the upper ring groove.4. The pump of claim 1 , wherein the lower adapter comprises a lower ...

Pump mechanism, pump system, and manufacturing method of pump mechanism

A pump mechanism is provided, including a housing, a first impeller, a second impeller, and two driving modules. The housing includes a first recess, a second recess, a plate, a channel, an input pipe, a first output pipe, and a second output pipe. The plate is disposed between the first recess and the second recess. The channel passes through the plate and communicated with the first recess and the second recess. The input pipe is connected to the channel and passes through the housing and the plate. The first output pipe and the second output pipe are respectively communicated with the first recess and the second recess.

Water pump module

A pump body includes a housing, a first and a second chambers separated and communicated by the housing, an input pipe communicated with the first chamber and an output pipe communicated with the second chamber. The input pipe has a water outlet located in the first chamber. The output pipe has a water inlet located in the second chamber. The first pump has a first rotor placed in the first chamber. The second pump has a second rotor placed in the second chamber, wherein an extension line of a rotating shaft of the second rotor is perpendicular to a plane where a rotating shaft of the first rotor located.

BATCH CHANGE CONTROL FOR VARIABLE SPEED DRIVEN CENTRIFUGAL PUMPS AND PUMP SYSTEMS

A pump system includes an interface detection meter arranged at a pipeline assembly, a drive assembly for controlling speed of a pump arranged at the pipeline assembly, a discharge pressure control assembly and/or flow control assembly for controlling discharge pressure of the pump system, and a control assembly operably coupled to the drive assembly and/or the discharge pressure control assembly and/or the flow control assembly. A logic control of the control assembly receives fluid data of fluid in the pipeline assembly provided by the interface detection meter, and forwards the fluid data for calculating speed set points for the drive assembly and/or discharge pressure control parameter and/or set points for the discharge pressure control assembly, and/or flow rate control set points for the flow control assembly. A method for controlling variable speed driven pumps or pump systems during batch change and an embodiment of a plug-and-play device are disclosed. 1. A pump system comprising:a pipeline assembly for transporting fluid;a pump assembly comprising a plurality of pumps arranged along the pipeline assembly;a pump motor assembly comprising a plurality of pump motors driving the plurality of pumps of the pump assembly;a control assembly for controlling speed of at least one pump motor and discharge pressure and flow rate of at least one pump; andat least one interface detection meter in communication with the pipeline assembly, the interface detection meter determining properties of the fluid in the pipeline assembly, and the control assembly controlling the speed and/or the discharge pressure and/or the flow rate according to the properties determined of the fluid in the pipeline assembly.2. The pump system of claim 1 , the control assembly transmitting data of the properties of the fluid and calculating speed set points and/or discharge pressure set points and/or control parameter and/or flow rate set points.3. The pump system of claim 2 , wherein the ...

Lube oil recovery system for geothermal lineshaft pump

A geothermal pump includes a lineshaft, an internal casing disposed concentrically around the lineshaft and configured to form a lubrication-space between the lineshaft and the internal casing, an external casing disposed concentrically around the internal casing and configured to form a brine-space between the internal casing and the external casing, a piping network connected to an above-ground end of the internal casing, and a seal assembly disposed on a down-hole end of the lineshaft and connected to the piping network and the lubrication-space, such that a fluid circuit is formed, the seal assembly being configured to enable a lubrication fluid to flow from the piping network to the lubrication-space in a direction toward the above-ground end of the lineshaft while restricting the lubrication fluid from flowing toward the down-hole end of the lineshaft.

FLUID-TRANSFER DEVICE AND METHOD FOR MANUFACTURING SAME

A fluid transfer device including a rotor having two centrifugal wheels, and a stator incorporating a set of continuous axi symmetric return channels conveying the fluid from the first wheel to the second wheel. Each of the return channels includes in succession a diffusing portion that guides the fluid in a centrifugal direction, a bend portion that redirects the fluid stream in a centripetal direction, a return portion that guides the fluid along a centripetal path, and then an outlet portion formed in a first non-tubular part that guides the fluid towards the second wheel. In these channels, the diffusing portion and the bend portion are distinct parts, and the diffusing portion is formed in a second non-tubular part secured to the first non-tubular part. A method of fabricating the device. 112-. (canceled)13. A fluid transfer device comprising a rotor having at least a first centrifugal wheel and a second centrifugal wheel , and a stator incorporating a plurality of return channels;in which device the return channels are axisymmetric, and each return channel includes in succession along the fluid flow path from the first wheel:a diffusing portion suitable for guiding the fluid stream in a centrifugal flow direction; thena bend portion suitable for redirecting the fluid stream in a centripetal flow direction; thena return portion suitable for guiding the fluid along a centripetal path; and thenan outlet portion formed in a first non-tubular part, and suitable for guiding the fluid towards the inlet of the second centrifugal wheel;wherein each of said return channels is suitable for collecting a portion of a fluid stream leaving the first wheel and for directing this stream portion to an inlet of the second wheel without exchanging the fluid with any other one of said return channels; and in that for each of said channels:the diffusing portion and the bend portion are formed in distinct parts; andthe diffusing portion is formed in a second non-tubular part secured ...

Arrangement of components in a fluid energy machine and assembly method

An assembly method and an arrangement of components in a fluid energy machine, in particular a turbocompressor, with a longitudinal axis. The arrangement includes: an inner bundle to be arranged in an outer casing of the fluid energy machine, a low-pressure unit of the fluid energy machine, at least one cover of the fluid energy machine for the axial end-side closure of the outer casing on at least one end side, wherein these components are arranged axially adjacent to one another in the sequence cover, low-pressure unit, inner bundle and the cover is releasably attached to the low-pressure unit and the inner bundle is releasably attached to the low-pressure unit such that there results a transportable unit.

MULTISTAGE PUMP AND SUBSEA PUMPING ARRANGEMENT

A multistage pump for installation on a sea ground includes a common housing, a pump unit arranged in the common housing, a drive unit arranged in the common housing, and a coupling. The common housing includes a pump inlet and a pump outlet, the pump unit including a plurality of impellers to convey a compressible fluid from the pump inlet to the pump outlet, and a pump shaft, on which each impeller is mounted, each impellepr being a radial or semi-axial impeller. The drive unit includes a drive shaft to drive the pump shaft, and an electric motor configured to rotate the drive shaft about an axial direction. The coupling couples the drive shaft to the pump shaft. The pump unit conveys the fluid in a dense phase at the pump outlet, and at least two impellers of the plurality of impellers have a different specific speed. 1. A multistage pump configured for installation on a sea ground , comprising:a common housing;a pump unit arranged in the common housing;a drive unit arranged in the common housing,the common housing comprising a pump inlet and a pump outlet, the pump unit comprising a plurality of impellers configured to convey a compressible fluid from the pump inlet to the pump outlet, and a pump shaft, on which each impeller of the plurality of impellers is mounted, each said impeller is a radial or semi-axial impeller, the drive unit comprising a drive shaft configured to drive the pump shaft, and an electric motor configured to rotate the drive shaft about an axial direction; anda coupling configured to couple the drive shaft to the pump shaft,the pump unit configured to convey the fluid being in a dense phase at the pump outlet, and at least two impellers of the plurality of impellers have a different specific speed.2. The multistage pump in accordance with claim 1 , wherein the multistage pump is an injection pump configured to inject the compressible fluid in the dense state into a subterranean region.3. The multistage pump in accordance with claim 1 , ...

Inducer for Centrifugal Pump

An inducer for vertical flow, cryogenic liquid centrifugal pumps comprising a stationary outer housing portion having an inlet and an outlet, the inlet located at a lower end and the outlet located at an upper end, the housing further having an inner wall portion with one or more spiral vanes projecting outwardly from the inner wall portion, the one or more spiral vanes defining one or more gap regions on the inner wall portion that spiral in a first direction, and an inner rotating impeller mounted on a rotating center shaft, the impeller having at least one curved blade which defines a curved, helicoid plane surface in which the slope of the plane increases as the distance from the center axis increases, the impeller rotating in a second direction which is in counter rotation to the first direction.

ESP PUMP FLOW RATE ESTIMATION AND CONTROL

An electric submersible pump system can include a multiphase electric motor operatively coupled to a fluid pump; a multiphase power cable operatively coupled to the multiphase electric motor; and a controller that includes an input that receives measurements as to power supplied to the multiphase electric motor via the multiphase power cable and that processes the measurements to determine information germane to the operation of the electric submersible pump system. 1. An electric submersible pump system comprising:a multiphase electric motor operatively coupled to a fluid pump;a multiphase power cable operatively coupled to the multiphase electric motor; anda controller that comprises an input that receives measurements as to power supplied to the multiphase electric motor via the multiphase power cable and that processes the measurements to estimate a pump rate of the fluid pump.2. The electric submersible pump system of wherein the controller comprises an output that outputs information to control power supplied to the multiphase power cable.3. The electric submersible pump system of wherein the information is based at least in part on processing of at least one of the measurements.4. The electric submersible pump of wherein the controller comprises a closed loop controller.5. The electric submersible pump of wherein the electric motor comprises an IM motor.6. The electric submersible pump of wherein the electric motor comprises a PMS motor.7. The electric submersible pump of wherein the controller comprises a state space-based model.8. The electric submersible pump of wherein the state space-based model comprises rotor and stator resistance parameters that are dynamically adapted based at least in part on operational conditions of the electric submersible pump.9. The electric submersible pump of wherein the state space-based model comprises a system variable vector and an excitation vector.10. The electric submersible pump of wherein the state space-based model ...

PUMP SYSTEM FOR HIGH PRESSURE APPLICATION

A pump system for high pressure, high volume applications is presented. The pump system includes a turbo-shaft engine having a drive shaft and a high pressure, high RPM centrifugal pump coupled to the drive shaft. In certain embodiments the pump system further includes a second low pressure, high RPM centrifugal pump coupled to the drive shaft. 1. A pump system , comprising:an engine including a drive shaft; andat least one pump connected to the drive shaft, the at least one pump including a primary impeller and a sacrificial impeller, the sacrificial impeller being configured, dimensioned, and positioned for increased wear relative to the primary impeller to increase usable life of the primary impeller.2. The pump system of claim 1 , further comprising:a primary housing, the primary impeller being positioned within the primary housing.3. The pump system of claim 1 , wherein the at least one pump further includes a cap covering the sacrificial impeller claim 1 , the cap being removable to facilitate repair and/or replacement of the sacrificial impeller.4. The pump system of claim 1 , wherein the at least one pump is positioned distally of the engine claim 1 , the sacrificial impeller being positioned distally of the primary impeller.5. The pump system of claim 1 , wherein the at least one pump is in direct mechanical cooperation with the engine such that there are no intervening mechanical systems between the at least one pump and the engine.6. The pump system of claim 5 , wherein the at least one pump further includes a rotor shaft claim 5 , the rotor shaft being mechanically coupled to the drive shaft of the engine such that rotational movement of the drive shaft is directly communicated to the rotor shaft.7. The pump system of claim 6 , wherein the pump system is configured and dimensioned for operation at an efficiency of about 94%.8. The pump system of claim 1 , wherein the at least one pump includes a first pump and a second pump claim 1 , the first pump being ...

IMPELLER FOR CENTRIFUGAL PUMPS

An impeller for centrifugal pumps has a first disk element, functionally arranged toward the inlet, which is coaxial to and faces a second disk element, which is functionally arranged toward the delivery and is connected rigidly to the first disk element by virtue of a series of angularly spaced vanes and is provided centrally with a means for fixing to a transmission shaft. The particularity of the present invention resides in that the impeller includes a series of openings formed in the substantially peripheral region of the second disk element, between pairs of adjacent vanes, substantially at the areas subjected to the greatest axial thrust. 1. An impeller for centrifugal pumps comprising a first disk element , functionally arranged toward the inlet , which is coaxial to and faces a second disk element , which is functionally arranged toward the delivery; said second disk element being connected rigidly to said first disk element by angularly spaced vanes and being centrally provided with a fastening means for fastening to a transmission shaft; said impeller being characterized in that it comprises openings formed in the substantially peripheral region of said second disk element , between pairs of adjacent vanes , substantially at the areas subjected to the greatest axial thrust.2. The impeller according to claim 1 , characterized in that the radially peripheral side of each of said openings extends at a distance that is shorter than that of the peripheral edge of said second disk element claim 1 , with respect to the rotation axis of said impeller.3. The impeller according to claim 1 , characterized in that said openings are constituted by contoured slots that are formed in the substantially peripheral region of said second disk element claim 1 , between pairs of adjacent vanes; the radially peripheral side of each of said contoured slots having an arc-like profile with a convexity facing said rotation axis.4. The impeller according to claim 3 , characterized ...

DOWNHOLE CENTRIFUGAL PUMP DIFFUSER WITH PROTUBERANT VANES AND RELATED PUMPS AND METHODS

Stationary diffusers, downhole centrifugal pumps, and methods of pressurizing a fluid may include vanes configured to direct fluid flow through fluid passageways, where at least some of the vanes include a bulge or protrusion extending axially beyond the fluid passageways into an open rotational volume of the diffuser in a direction toward an impeller. 1. A stationary diffuser for use in a downhole centrifugal pump , the stationary diffuser comprising:a first axial side for receiving fluid from a first impeller rotationally coupled to the stationary diffuser at the first axial side;a second axial side for transferring the fluid to a second impeller rotationally coupled to the stationary diffuser at the second axial side;an inner shaft housing defining a central axis cavity extending from the first axial side to the second axial side, the inner shaft housing configured to accept a rotational shaft passing through the central axis cavity to impart rotation to the first impeller and the second impeller; and a first upstream end for receiving the fluid output by the first impeller; and', 'a second downstream end comprising a bulge extending axially beyond the fluid passageways into an open rotational volume of the stationary diffuser in a direction toward the second impeller, the open rotational volume of the stationary diffuser configured to be defined between the stationary diffuser and the second impeller., 'vanes positioned radially outward from and at least partially around the inner shaft housing, the vanes configured to direct fluid flow through fluid passageways defined by the vanes from the first axial side to the second axial side, at least some of the vanes comprising2. The stationary diffuser of claim 1 , wherein the bulge comprises an at least partially rounded portion of the at least some of the vanes claim 1 , the at least partially rounded portion extending beyond a fluid exit of the fluid passageways that radially encloses the fluid claim 1 , the at ...

CENTRIFUGAL PUMP

A centrifugal pump () includes a pump casing and a shaft () which is rotatably mounted therein and on which an impeller (), for delivering fluid, is arranged rotationally fixed. A cartridge shaft seal () is arranged between the shaft () and an opening () of the casing, through which opening the shaft () is led. The cartridge shaft seal () includes a sleeve () which surrounds the shaft () at least in the region of the opening and which is connected to the shaft () releasably and rotationally fixed, by way of a clamping device () which is arranged on the outer side of the sleeve (). The clamping device () includes clamping jaws () which only engage on the outer side of the sleeve () and non-positively connect the sleeve () to the shaft (). 1. A single-stage or multi-stage centrifugal pump comprising:a pump casing;a shaft rotatably mounted in the pump casing;at least one impeller arranged on the shaft in a rotationally fixed manner for delivering fluid; anda cartridge shaft seal arranged between the shaft and an opening of the casing, through which opening the shaft is led, the cartridge shaft seal comprising a sleeve surrounding the shaft at least in the region of the opening and a clamping device comprising a clamp, the sleeve being releasably and rotationally fixedly connected to the shaft via the clamping device, the clamping device being arranged on an outer side of the sleeve, wherein the clamp of the clamping device engage only on an outer side of the sleeve such that the sleeve is only non-positively connected to the shaft.2. A centrifugal pump according to claim 1 , wherein the clamping device is releasably connected to the sleeve.3. A centrifugal pump according to claim 1 , wherein the at least one clamp of the clamping device comprises:screws;at least two clamping components which surround the sleeve in sections and which, via the screws arranged tangentially or parallel to the at least two clamping components, are connected to one another such that clamping ...

ANTI-GAS LOCK ELECTRIC SUBMERSIBLE PUMP

An electric submersible pump including a housing having a longitudinal axis extending therethrough; and a plurality of stages disposed within the housing each stage having an impeller and a diffuser, the plurality of stages stackable one upon the other along the longitudinal axis of the housing, wherein one or more of the plurality of stages is a standard flow stage, wherein one or more of the plurality of stages is an anti-gas lock flow stage, and wherein the anti-gas lock flow stages are modified relative the standard flow stages to have decreased incidence of trapped gas. 1. An electric submersible pump comprising:a housing having a longitudinal axis extending therethrough; anda plurality of stages disposed within the housing each stage having an impeller and a diffuser, the plurality of stages stackable one upon the other along the longitudinal axis of the housing,wherein one or more of the plurality of stages is a standard flow stage,wherein one or more of the plurality of stages is an anti-gas lock flow stage, andwherein the anti-gas lock flow stages are modified relative the standard flow stages to have decreased incidence of trapped gas.2. The electric submersible pump of claim 1 , wherein the anti-gas lock flow stages have a fluid leakage point absent in the standard flow stages thereby decreasing the incidence of trapped gas.3. The electric submersible pump of claim 2 , wherein the impeller of the one or more anti-gas lock flow stages comprises a top shroud claim 2 , a bottom shroud claim 2 , and one or more vanes.4. The electric submersible pump of claim 3 , wherein the fluid leakage point comprises apertures formed in one or more of the top shroud claim 3 , the bottom shroud claim 3 , and the one or more vanes.5. The electric submersible pump of claim 3 , wherein the diameter of the top shroud is less than the diameter of the bottom shroud claim 3 , thereby forming the fluid leakage point.6. The electric submersible pump of claim 1 , wherein the housing ...

Systems and Methods for Sensing Parameters in an ESP Using Multiple MEMS Sensors

Systems and methods for distributed downhole sensing of operating parameters in an ESP utilizing MEMS sensors. In one embodiment, an ESP is installed in a well. The ESP has a pump, a gas separator, a seal section and a motor. Multiple MEMS sensors are positioned within one or more of the ESP components. Each of the MEMS sensors has a sensor component and on-board circuitry that are formed on a substrate. Each MEMS sensor's sensor component senses a corresponding operating parameter and provides sensed information to the on-board circuitry, which processes the received sensor signal as needed and provides the processed information at an output of the MEMS sensor. The outputs of the different MEMS sensors can be networked together, and the sensor information for the different operating parameters can be communicated to equipment at the surface of the well via a common electrical line.

HORIZONTAL PUMPING SYSTEM WITH PRIMARY STAGE ASSEMBLY AND SEPARATE NPSH STAGE ASSEMBLY

A horizontal pumping system has a motor, a suction chamber and a pump driven by the motor. The pump includes a primary stage assembly and a low NPSH stage assembly connected between the primary stage assembly and the suction chamber. The low NPSH stage assembly is external to the primary stage assembly. The low NPSH stage assembly includes a diffuser connected to the pump housing and a low NPSH impeller contained within the diffuser. The diameter of the low NPSH stage assembly is optionally larger than the diameter of the primary stage assembly. 1. A horizontal pumping system comprising:a motor;a suction chamber; and a primary stage assembly; and', 'a low NPSH stage assembly connected between the primary stage assembly and the suction chamber., 'a pump driven by the motor, wherein the pump comprises2. The horizontal pumping system of claim 1 , wherein the primary stage assembly includes a pump housing and wherein the low NPSH stage assembly is not contained within the pump housing.3. The horizontal pumping system of claim 1 , wherein the low NPSH stage assembly comprises:a diffuser;an impeller; andan intermediate shaft.4. The horizontal pumping system of claim 3 , wherein the diffuser comprises a pressure vessel.5. The horizontal pumping system of claim 3 , wherein the impeller comprises a radial flow impeller.6. The horizontal pumping system of claim 3 , wherein the impeller comprises a mixed flow impeller.7. The horizontal pumping system of claim 3 , wherein the impeller includes a plurality of blades.8. The horizontal pumping system of claim 7 , wherein the impeller includes fewer than five blades.9. The horizontal pumping system of claim 7 , wherein each of the plurality of blades has a curvilinear leading edge.10. The horizontal pumping system of claim 7 , wherein each of the plurality of blades has an inlet meridional curvature defined by the ratio of the length of the blade (h) to the radius of the blade (r).11. The horizontal pumping system of claim 10 , ...

DISCHARGE HEAD FOR A VERTICAL PUMP AND VERTICAL PUMP

A discharge head for a vertical pump includes a base plate configured to mount the discharge head, a top plate, at least one support member connecting the base plate with the top plate, a discharge pipe with an outlet configured to deliver a fluid, and an inner tube. The discharge pipe extends through the base plate. The inner tube is configured to receive a shaft that connects a drive unit with an impeller of the vertical pump, and extends in an axial direction and coaxially within the discharge pipe in a region of the base plate, passing through a wall of the discharge pipe at an intersection, and further extending to the top plate. The inner tube includes a bellows member disposed between the intersection and the top plate. 1. A discharge head for a vertical pump , comprising:a base plate configured to mount the discharge head;a top plate;at least one support member connecting the base plate with the top plate;a discharge pipe with an outlet configured to deliver a fluid, the discharge pipe extending through the base plate; andan inner tube configured to receive a shaft that connects a drive unit with an impeller of the vertical pump, the inner tube extending in an axial direction and coaxially within the discharge pipe in a region of the base plate, passing through a wall of the discharge pipe at an intersection, and further extending to the top plate, the inner tube comprising a bellows member disposed between the intersection and the top plate.2. A discharge head in accordance with claim 1 , wherein the bellows member is firmly connected to the top plate.3. A discharge head in accordance with claim 1 , wherein the bellows member extends over at least half a distance between the intersection and the top plate.4. A discharge head in accordance with claim 1 , wherein the discharge pipe has a vertical section extending in the axial direction claim 1 , a horizontal section extending perpendicular to the axial direction and an intermediate section connecting the ...

TWO-VANE PUMP AND DESIGN METHOD OF TWO-VANE PUMP FOR WASTEWATER USING MACHINE LEARNING

The present disclosure relates to a two-vane pump for wastewater and a design method of a two-vane pump for wastewater using machine learning, and more particularly, a design method of a two-vane pump using machine learning capable of having efficiency of a target head and performing optimal design for sizes of solids that can pass through and a two-vane pump for wastewater according to the machine learning. According to the present disclosure, there is provided a design method of two-vane pump for wastewater using machine learning, including: a) setting an objective function; b) setting design variables of the impeller and volute for deriving the set objective function and a range of each design variable; c) deriving a plurality of experimental points including values of the design variables within the range of the design variable; d) generating an input value by calculating the value of the objective function through numerical analysis of each of the derived experimental points; e) constructing a surrogate model through machine learning for the input value; and f) deriving an optimal design of the two-vane pump for wastewater from the constructed surrogate model. 1. A two-vane pump for wastewater , comprising:a circular volute having one inlet and one outlet; anda pair of impellers configured to rotate inside the volute and formed in a symmetrical streamline shape with respect to a rotation center to guide a flow of a fluid introduced into the volute,wherein the pair of impellers are spaced apart from each other by a preset distance so that solids contained in wastewater pass through.2. The two-vane pump for wastewater of claim 1 , wherein the inlet and outlet of the volute are formed in a perpendicular direction toward different planes.3. The two-vane pump for wastewater of claim 2 , wherein the volute is formed such that a cross-sectional area gradually increases from a side of the inlet to a side of the outlet.4. The two-vane pump for wastewater of claim 1 , ...

Self-Priming Pump

A self-priming pump is described that has a housing, an inlet, and an outlet. A first impeller has a first pump section that is arranged in a first chamber, and a second impeller has a second pump section that is arranged in a second chamber. A shaft section is provided between the pump sections, and has a shaft end and penetrates an opening in a housing wall. To improve the net positive section head of the pump, the shaft section between a constriction and the shaft end is formed to taper from the shaft end toward the constriction, and the first impeller and shaft section between the constriction and first pump section has a smooth contour.

MODULAR INTAKE FILTER SYSTEM, APPARATUS AND METHOD

A modular intake filter system, apparatus and method for an artificial lift pump assembly is described. A modular intake filter apparatus comprises at least one modular intake filter comprising a perforated housing supportively engaged to a production pump of an artificial lift assembly, and a porous media cartridge sealed to an exterior of the perforated housing, wherein a porosity of the porous media cartridge is selected to prevent media of a chosen size from entering the production pump, and wherein a number of the at least one modular intake filter in the apparatus is determined by calculating an area of filtration material required by dividing a selected flow rate of pumped fluid by a permeability of the porous media cartridge, and calculating the number of the at least one modular intake filters by dividing the area of filtration material required by a surface area of a single modular intake filter. 1. An electric submersible pumping system comprising a modular intake filter for screening media from well fluid , the system comprising: an intake shaft that transfers horsepower from a seal section to a centrifugal pump of the ESP assembly; and', at least two modular intake filters comprising a perforated housing, each modular intake filter threadedly engaged to an adjacent modular intake filter by a guide; and', 'a porous media cartridge sealed to an exterior of the perforated housing, wherein a porosity of the porous media cartridge is selected to prevent media of a chosen size from entering the centrifugal pump., 'an intake section secured between the seal section and the centrifugal pump by a head on a downstream side and a base on an upstream side, the intake section comprising], 'an electric submersible pump (“ESP”) assembly comprising2. The system of claim 1 , wherein a number of the at least two modular intake filters is determined by:calculating an area of filtration material required by dividing a selected flow rate of pumped fluid by a permeability of ...

Motorized pump

A motorized pump to pump fluid. The motorized pump includes a shaft disposed in a center portion of the motorized pump, a motor having a motor stator, and a pump having an internal diffuser and an external impeller, wherein the motor stator radially surrounds the pump. A housing radially encloses the motor stator, the internal diffuser, and the external impeller. The motor stator is disposed adjacent the housing. 1. A motorized pump to pump fluid , comprising:a shaft disposed in a center portion of the motorized pump, wherein the shaft does not rotate in operation;a motor comprising a motor stator comprising laminations and windings;a pump comprising an internal diffuser and an external impeller, wherein the motor stator radially surrounds the pump, and wherein an axial length of the shaft is greater than an axial length of the external impeller; anda housing radially enclosing the motor stator, the internal diffuser, and the external impeller, wherein the motor stator is disposed adjacent the housing.2. The motorized pump of claim 1 , wherein the pump comprises a multi-stage centrifugal pump claim 1 , wherein the shaft extends through a stage of the multi-stage centrifugal pump claim 1 , and wherein the motorized pump is an electrical submersible pump (ESP) motor and ESP pump and does not comprise an ESP motor protector.3. The motorized pump of claim 1 , wherein the external impeller comprises permanent magnets to engage the motor stator via electromagnetic coupling to rotate the external impeller about the shaft claim 1 , the external impeller comprising a flow path for fluid pumped by the motorized pump.4. The motorized pump of claim 3 , wherein the permanent magnets of the external impeller comprise a motor rotor of the motor.5. The motorized pump of claim 1 , wherein the motor comprises an annular motor rotor mechanically coupled to the external impeller claim 1 , wherein an axial length of the annular motor rotor is longer than an axial length of the external ...

CENTRIFUGAL PUMP WITH BALANCING DEVICE AND A METHOD OF BALANCING AXIAL FORCES OF THE CENTRIFUGAL PUMP

A single-stage or multi-stage centrifugal pump has a balancing disc for balancing the axial forces of the pump. The balancing disc includes at least one annular groove in at least one of the non-axial counter surfaces and of the balancing disc and the counter member. 1. A centrifugal pump , comprising:a pump casing with an inlet and an outlet;a shaft sealed and mounted with slide bearings to the pump casing, the shaft being movable in axial direction;at least one impeller fastened on the shaft for rotation therewith and a balancing device configured to balance axial forces, the balancing device comprising a balancing disc fastened on the shaft for rotation therewith and having an outer circumference; anda stationary counter member arranged in connection with the pump casing,the balancing disc and the counter member forming therebetween a balancing cavity, the balancing disc having a first non-axial surface delimited to the outer circumference and the counter member having a second non-axial surface, the first and the second non-axial surfaces facing one another and forming a thin gap therebetween, at least one of the first and the second non-axial surfaces including at least one annular groove, a throttling being arranged downstream of the balancing disc and the counter member includes a counter ring having the second non-axial surface or the balancing disc includes an annular ring having the first non-axial surface.2. (canceled)3. (canceled)4. The centrifugal pump in accordance with claim 1 , wherein the at least one annular groove is a plurality of annular grooves claim 1 , and at least one of the first and the second non-axial surfaces includes circular rings forming the plurality of annular grooves therebetween.5. The centrifugal pump in accordance with claim 1 , wherein the annular groove has a depth of at least 10-fold to that of the thin gap.6. The centrifugal pump in accordance with claim 1 , wherein the annular groove has a dimension of 1 to tens of ...

CENTRIFUGAL COMPRESSOR

A centrifugal compressor is provided with a plurality of diaphragms including a first diaphragm and a second diaphragm which are adjacent to each other in an axial direction, a casing disposed on a radially outer side of the plurality of diaphragms and accommodating an internal component including the plurality of diaphragms, at least one axial spacer disposed between the first diaphragm and the second diaphragm, and a scroll flow passage formed by a scroll inner peripheral wall and a scroll outer peripheral wall. The scroll inner peripheral wall is formed by a surface of the first diaphragm positioned on a radially inner side of an outer peripheral surface of the first diaphragm. At least a part of the scroll outer peripheral wall is formed by an inner peripheral surface of the casing. 1. A centrifugal compressor comprising:a plurality of diaphragms including a first diaphragm and a second diaphragm which are adjacent to each other in an axial direction;a casing disposed on a radially outer side of the plurality of diaphragms and accommodating an internal component including the plurality of diaphragms;at least one axial spacer disposed between the first diaphragm and the second diaphragm; anda scroll flow passage formed by a scroll inner peripheral wall and a scroll outer peripheral wall, the scroll inner peripheral wall being formed by a surface of the first diaphragm positioned on a radially inner side of an outer peripheral surface of the first diaphragm, at least a part of the scroll outer peripheral wall being formed by an inner peripheral surface of the casing.2. The centrifugal compressor according to claim 1 ,wherein the at least one axial spacer includes a plurality of axial spacers disposed in a circumferential direction on a radially inner side of the inner peripheral surface of the casing.3. The centrifugal compressor according to claim 2 ,wherein each of the axial spacers has a spacer inner peripheral surface facing the scroll inner peripheral wall, ...

ELECTRIC PUMP

An electric liquid pump includes a casing having a central portion, rear cover and front cover, having an inlet and an outlet for the liquid. The central portion has first and second compartments, with the second compartment in fluid communication with the front cover interior. The pump includes an impeller and an electric motor, for operating the impeller, a stator housed in the first compartment, a rotor, coaxial with the stator, housed in the second compartment and an electronic card for supplying the stator at least partly housed in the rear cover. The central portion includes a plurality of walls delimiting a plurality of gaps in fluid communication with the second compartment and the front cover interior such that the liquid circulates in the gaps. The walls at least partly face the stator such that the liquid circulating in the corresponding gap removes heat from the stator. 1. An electric pump for moving a liquid , comprising a case comprisinga central portion having a first and a second compartment which are separate from each other;a front cover and a rear cover, equipped with an inlet and an outlet for the liquid, joined to the central portion, the second compartment being in fluid communication with the inside of the front cover, the pump comprisingan electric motor comprising a stator having a plurality of poles housed in the first compartment, a rotor, coaxial with the stator, housed in the second compartment, an electronic card for supplying the stator at least partly housed in the rear cover; the pump comprisingan impeller associated with the rotor, rotated by the latter and housed at least partly in the front cover, the pump being characterised in that the central portion comprises a plurality di walls delimiting a plurality of gaps in fluid communication with the second compartment and with the inside of the front cover in such a way that the liquid also circulates in the gaps, the walls being at least partly facing the stator in such a way that ...

APPARATUS AND SYSTEM FOR A THRUST-ABSORBING HORIZONTAL SURFACE PUMP ASSEMBLY

An apparatus and system for a thrust-absorbing horizontal surface pump assembly is described. A thrust-absorbing horizontal surface pump system includes an intake chamber including a stationary thrust bearing paired with a rotatable thrust runner to form a thrust bearing set, wherein a first face of the stationary thrust bearing positioned towards the rotatable thrust runner is at least partially diamond-coated, and wherein a second face of the rotatable thrust runner positioned towards the stationary thrust bearing is at least partially diamond-coated, a fluid entrance that receives a fluid into the intake chamber, and a pump inlet that receives the fluid into the multi-stage centrifugal pump, wherein the thrust bearing set is arranged around the intake shaft such that during operation of the electric motor the thrust bearing is in a pathway of the fluid as the fluid flows between the fluid entrance and the pump inlet. 1. A horizontal surface pump assembly comprising:a horizontally-mounted electric submersible pump (ESP pump), the ESP pump comprising a portion defining a pump inlet;a motor operatively coupled to the ESP pump so as to turn the ESP pump; an intake shaft, the intake shaft rotatably coupled to a motor shaft on a first end and an ESP pump shaft on a second end; and', 'a bearing disposed around the intake shaft;, 'an intake chamber extending between the ESP pump and the motor, wherein the intake chamber comprises a fluid entrance;', 'an open cavity extending between the bearing and the pump inlet; and', 'a fluid path from the fluid entrance through the open cavity to the pump inlet., 'the intake chamber further comprising portions defining2. The horizontal surface pump assembly of claim 1 , wherein the bearing comprises a thrust bearing secured to a chamber base of the intake chamber and a thrust runner rotatable with the intake shaft.3. The horizontal surface pump assembly of claim 1 , wherein the bearing comprises diamond.4. The horizontal surface pump ...

Diffuser assembly for upward, downward and radial pump protection

A diffuser subassembly for use in downhole submersible pump assemblies includes a bearing set for supporting a drive shaft of the pump assemblies. The bearing set includes a sleeve for supporting the drive shaft in upward, downward and radial directions. The sleeve includes a central flange captured axially between a pair of bushings fixed to a diffuser body. Axial loads from the drive shaft may be transferred through the central flange of the sleeve to one or the other of the bushings into the diffuser body to accommodate upward and downward thrust forces. The bushings may be keyed to discourage rotational motion with respect to the diffuser body.

CENTRIFUGAL PUMP ASSEMBLY

A centrifugal pump assembly () includes an impeller, an electric drive motor (), driving the impeller (), and a back-flow channel (), forming a flow connection from a delivery side () to a suction side (). A valve (), in a pressure-dependent manner, closes the flow connection. A control device () adjusts/sets the speed (n) of the drive motor (), and is configured with a venting function for venting the centrifugal pump assembly () on operation. According to the venting function, after the detection of an air accumulation, the speed (n) of the drive motor () is automatically reduced, and subsequently the speed (n) is rapidly increased again. A method is also provided for removing an air accumulation from a centrifugal pump assembly during operation, which method includes reducing the speed (n) of the centrifugal pump assembly and subsequently rapidly increasing the speed (n) of the centrifugal pump again. 1. A centrifugal pump assembly comprising:at least one impeller;an electric drive motor driving the impeller;a back-flow channel forming a flow connection from a delivery side of the impeller to a suction side of the impeller;a valve closing, in a pressure-dependent manner, the flow connection; anda control device setting a speed of the drive motor, said control device being further configured with a venting function for venting the centrifugal pump assembly upon operation thereof, wherein the venting function includes a reducing step, after a detection of an air accumulation by way of the control device, automatically reducing the speed of the drive motor and includes an increasing step, subsequently rapidly increasing the speed of the drive motor again.2. A centrifugal pump assembly according to claim 1 , wherein the control device is further configured such that the speed of the drive motor claim 1 , in the reducing step claim 1 , is reduced to such an extent that the valve of the back-flow channel opens.3. A centrifugal pump assembly according to claim 1 , ...

BALANCING AXIAL THRUST IN SUBMERSIBLE WELL PUMPS

A first fluid rotor that has a first fluid intake end and a first fluid discharge end. A second fluid rotor that has a second fluid intake end and a second fluid discharge end. The second fluid rotor is rotatably coupled to the first fluid rotor to rotate in unison with the first fluid rotor along a shared rotational axis. The first fluid intake end and the second fluid intake end are facing opposite directions. A first fluid stator surrounds the first fluid rotor. The first fluid rotor and the first fluid stator form a first fluid stage. The second fluid stator is aligned along the rotational axis. The second fluid stator and the second fluid rotor form a second fluid stage. A flow crossover sub is positioned between the first fluid stage and the second fluid stage. 113-. (canceled)14. A method comprising:rotating a fluid rotor positioned within a wellbore, the rotor having a first pressure gaining section and a second pressure gaining section;directing a fluid into the first pressure gaining section;creating a first axial thrust load in a first direction in response to directing the fluid into a first pressure gaining section;directing a fluid into the second pressure gaining section; andcreating a second axial thrust load in response to directing the fluid into a second pressure gaining section, the second axial thrust load being in the opposite direction of the first axial thrust load.15. The method of claim 14 , wherein directing the fluid into the second pressure gaining section occurs after directing the fluid into the first pressure gaining section.16. The method of claim 14 , wherein directing the fluid into the second pressure gaining section occurs simultaneously as directing the fluid into the first pressure gaining section.17. The method of claim 14 , wherein the fluid comprises wellbore production fluid.18. The method of claim 14 , wherein rotating the fluid rotor comprised transferring rotary motion to the fluid rotor by a magnetic coupling.19. The ...

ANTI-SWIRL RIBS IN ELECTRIC SUBMERSIBLE PUMP BALANCE RING CAVITY

Systems and features for improving sand control in pumps are provided. These features can be used in centrifugal pumps employed in a variety of oilfield applications, such as in electric submersible pumping systems positioned downhole in a wellbore to pump oil or other fluids. Such features include shielded anti-swirl ribs positioned in the balance chamber. 1. A system for controlling erosion in a pumping assembly , comprising:a pump comprising an impeller, a diffuser, a balance chamber disposed axially between a portion of the impeller and a portion of the diffuser, and a plurality of shielded ribs disposed in the balance chamber, the shielded ribs configured to reduce a velocity of swirling fluid flow in the balance chamber to reduce erosion.2. The system of claim 1 , wherein the shielded ribs are rectangular.3. The system of claim 1 , the diffuser comprising a central hub claim 1 , a balance ring step radially spaced from and circumferentially surrounding the central hub claim 1 , and a lower plate extending between and connecting the central hub and the balance ring step claim 1 , wherein the shielded ribs are at least partially defined by cavities formed in the balance ring step adjacent the lower plate.4. The system of claim 3 , wherein the cavities are rectangular.5. The system of claim 1 , further comprising one or more anti-swirl ribs protruding radially outward from the hub adjacent the lower plate.6. A system comprising:an electric submersible pump comprising a plurality of stages, each stage comprising an impeller and a diffuser, the impeller configured to direct fluid flow into the diffuser in use, the impeller comprising an upwardly extending balance ring, the diffuser comprising a hub and a balance ring step radially spaced from and circumferentially surrounding the hub, a radially outer surface of the balance ring positioned adjacent a radially inner surface of the balance ring step, and a balance cavity at least partially defined by the balance ring ...

HIGH PRESSURE MULTISTAGE CENTRIFUGAL PUMP FOR FRACTURING HYDROCARBON RESERVES

The present invention relates to a multistage centrifugal pump design, which has the diffusers, impellors, and a shaft, inserted within a high pressure housing, such that this assembly is fully enclosed within the housing, and the housing is of sufficient strength to be suitable for safe pressure containment of the fluids being pumped. This invention describes the technical details used to reconfigure the multistage centrifugal pump design to increase the discharge pressure capabilities higher than the 6,000 psig of current designs. 1. A method for hydraulically fracturing an underground hydrocarbon deposit comprising:using an underground aquifer as a source of water for a hydrocarbon fracturing process, the water containing undesirable chemical compounds as soluble components that are not in solution when subjected to pressure at atmospheric conditions;pumping the water under pressure at a predetermined level for the aquifer water and above a bubble point pressure for the water contained in the aquifer to prevent the undesirable chemical compounds in the water from separating out of solution;maintaining the water pressure above the bubble point pressure during a fracturing operation;drilling a source well into the aquifer;drilling a disposal well into the aquifer;pumping the water within a closed loop to maintain the water above the bubble point pressure;circulating the water until a fracturing operation begins; andconducting the fracturing operation with water from the underground aquifer to fracture the hydrocarbon deposit, wherein the water is maintained above its bubble point pressure, said water remains stable and the undesirable chemical compounds remain in solution.2. The method of claim 1 , wherein:the water remains clear during said conducting step.3. The method of wherein:fracturing is conducted for a shale gas deposit.4. The method of claim 1 , wherein:the water includes hydrogen sulfide, and pumping of the water under pressure and above the bubble point ...

FLUID MACHINE INCLUDING DIFFUSER

In a fluid machine, there is provided each diffuser flow passage for making uniform a flow in a downstream of a diffuser. The fluid machine is provided, and it has the diffuser for converting kinetic energy of a fluid into pressure energy. The diffuser has first and second diffuser flow passages configured so that the fluid passes through them, and shapes of the first and second diffuser flow passages are different from each other. 19-. (canceled)10. A fluid machine comprising:a diffuser for converting kinetic energy of a fluid into pressure energy, whereinthe diffuser has a first diffuser flow passage and a second diffuser flow passage configured such that the fluid passes through the first and second diffuser flow passages, and whereinthe first and second diffuser flow passages have different shapes.11. The fluid machine according to claim 10 , whereineach of the first and second diffuser flow passages has an inlet, and whereinin at least a part of each of the first and second diffuser flow passages, a cross sectional area perpendicular to each of flow passage centers at a position with an equal distance from each of the inlets of the first and second diffuser flow passages is different from each other.12. The fluid machine according to claim 10 , whereinthe fluid machine has a first rotatable impeller for giving a fluid kinetic energy, and whereinthe first diffuser flow passage and the second diffuser flow passage are located on a downstream of the first impeller in a flow direction of the fluid.13. The fluid machine according to claim 11 , whereinthe fluid machine has a first rotatable impeller for giving a fluid kinetic energy, and whereinthe first diffuser flow passage and the second diffuser flow passage are located on a downstream of the first impeller in a flow direction of the fluid.14. The fluid machine according to claim 12 , whereineach of the first and second diffuser flow passages has an outlet, 'a first confluence flow passage fluidly connected to ...

Abrasion-Resistant Thrust Bearings for ESP Pump

A multistage centrifugal pump has a rotatable shaft, a plurality of pump stages and a thrust module. Each of the plurality of pump stages has an impeller connected to the rotatable shaft and a stationary diffuser. The thrust module has a thrust runner and a unitary thrust pad. The unitary thrust pad has an axial wear face adjacent the thrust runner and a radial wear surface adjacent the rotatable shaft. The axial wear face and radial wear surface are integrated as a unitary component. The unitary thrust pad is secured to a thrust pad support with threaded fasteners that are torqued to a predetermined extent. 1. A multistage centrifugal pump comprising:a rotatable shaft; an impeller connected to the rotatable shaft; and', 'a stationary diffuser; and, 'a plurality of pump stages, wherein each of the plurality of pump stages comprises a thrust runner; and', an axial wear face adjacent the thrust runner;', 'a radial wear surface adjacent the rotatable shaft; and', 'wherein the axial wear face and radial wear surface are integrated as a unitary component., 'a unitary thrust pad, wherein the unitary thrust pad comprises], 'a thrust module, wherein the thrust module comprises2. The multistage centrifugal pump of claim 1 , wherein the thrust module further comprises a thrust pad support.3. The multistage centrifugal pump of claim 2 , wherein the unitary thrust pad is secured to the thrust pad with a plurality of threaded fasteners.4. The multistage centrifugal pump of claim 2 , wherein the unitary thrust pad includes bolt recesses.5. The multistage centrifugal pump of claim 4 , wherein the bolt recesses are located along an outer circumference of the axial wear face of the unitary thrust pad.6. The multistage centrifugal pump of claim 2 , wherein the thrust module further comprises a shaft sleeve between the shaft and the radial wear surface of the unitary thrust pad.7. An electric submersible pump configured to move fluids from a subterranean wellbore to the surface claim ...

Electric submersible pump configuration

A housing-less wellbore pump assembly is described. The pump assembly includes multiple pump stages connected end-to-end axially to pump well fluid in an uphole direction. Each pump stage includes a rotating impeller to rotate to provide kinetic energy to flow fluid through the wellbore pump assembly and a stationary diffuser within which the rotating impeller is positioned. The stationary diffuser converts the kinetic energy received from the rotating impeller to head to flow the fluid through the wellbore pump assembly. The stationary diffuser includes an uphole threaded end and a downhole threaded end to threadedly couple with another, uphole-positioned pump stage and with another, downhole-positioned pump stage, respectively. Threads of the uphole threaded end and the downhole threaded end are formed in directions opposite to a rotational direction of the impeller.

Torque-Thrust Chamber for Horizontal Pump Test Systems

A test skid for a pumping system is configured to evaluate the performance of a pump. The test skid includes a motor and a torque-thrust chamber connected between the motor and the pump. The torque-thrust chamber has a torque meter and a thrust bearing. The thrust bearing is positioned between the torque meter and the motor such that the torque meter is connected directly to the pump through a pump input shaft. In this configuration, the torque meter measures the torque applied directly to the pump without the need to account for losses through an intermediate thrust bearing. 1. A test skid for a pumping system that includes a pump , the test skid comprising:a motor; and a torque meter;', 'a thrust bearing, wherein the thrust bearing is positioned between the torque meter and the motor; and', 'a pump input shaft connected between the torque meter and the pump., 'a torque-thrust chamber connected between the motor and the pump, wherein the torque-thrust chamber comprises2. The test skid of claim 1 , wherein the torque meter is a non-contact torque meter.3. The test skid of claim 2 , wherein the torque meter is a bearingless digital torque meter.4. The test skid of claim 1 , further comprising:a flexible coupling;a drive shaft connected between the flexible coupling and the motor; anda thrust bearing shaft connected between the flexible coupling and the torque meter.5. The test skid of claim 4 , wherein the thrust bearing is connected to the thrust bearing shaft.6. The test skid of claim 4 , further comprising a suction chamber adapter connected between the pump and the torque-thrust chamber.7. The test skid of claim 1 , wherein the torque-thrust chamber further comprises one or more radial bearings.8. A horizontal pumping system comprising:a motor;a pump driven by the motor; and a non-contact torque meter; and', 'a thrust bearing, wherein the thrust bearing is positioned between the torque meter and the motor., 'a torque-thrust chamber connected between the motor and ...

INTERNAL-DRIVEN COMPRESSOR HAVING A POWERED COMPRESSOR ROTOR

The internal-driven compressor having a powered compressor rotor. The internal-driven compressor includes a compressor housing including a suction port and a discharge port, an internal driver including a rotor and a stator, the rotor and the stator located within the compressor housing, the stator located radially inward of the rotor, and a powered compressor rotor including an annular body extending about a center axis, wherein the rotor is fixed to the powered compressor rotor and configured to rotate the powered compressor rotor about the center axis in response to a force imparted by the stator. 1. An industrial gas compressor comprising:a compressor housing including a suction port and a discharge port;an internal driver including a rotor and a stator, the rotor and the stator located within the compressor housing, the stator located radially inward of the rotor; anda powered compressor rotor including an annular body extending about a center axis; andwherein the rotor is fixed to the powered compressor rotor and is configured to rotate the powered compressor rotor about the center axis in response to a force imparted by the stator.2. The industrial gas compressor of claim 1 , further comprisinga central axle nonrotatably fixed to the compressor housing and configured to support the internal driver and the powered compressor rotor; anda compressor bearing system, the compressor bearing system including one or more magnetic bearings fixed to the central axle, and configured to rotatably support the powered compressor rotor about the center axis.3. The industrial gas compressor of claim 1 , wherein the powered compressor rotor is further configured to compress a gas claim 1 , the industrial gas compressor further comprising an internal driver cooling system claim 1 , the internal driver cooling system configured to receive a portion of the gas claim 1 , to exchange heat from at least one of the internal driver and the powered compressor rotor to the portion of ...

THRUST BEARINGS FOR CENTRIFUGAL PUMPS

A bearing assembly for a centrifugal pump is configured to accommodate both forward and reverse axial thrust, and to be lubricated by process fluid. A pump incorporating a dual acting bearing assembly that is lubricated by process fluid and that is located between the final two impeller stages of the pump. A desalination system comprises a pump with an inlet for receiving seawater at a first end, an outlet for discharging high pressure seawater at a second end, one or more impellers coupled to a rotatable shaft between the first end and the second end for increasing a pressure of the seawater, and a bearing assembly lubricated by the seawater for absorbing axial thrust in both directions along the shaft. 1. A pump comprising:a casing having an inlet for receiving process fluid at first end and an outlet for discharging process fluid at a second end;a shaft within the casing rotatable about and axis and moveable along an axial direction;a plurality of impeller stages, each impeller stage comprising an impeller coupled to rotate with the shaft and a diffuser held stationary within the casing; one or more annular elements coupled to rotate with the shaft,', 'one or more bearing housings coupled to the casing:', 'a plurality of first thrust pads coupled to one of the bearing housings and facing toward the first end of the casing positioned to bear against at least one of the one or more annular elements when the shaft moves along the axial direction from the first end toward the second end;', 'a plurality of second thrust pads coupled to one of the bearing housings and facing toward the second end of the casing positioned to bear against at least one of the one or more annular elements when the shaft moves along the axial direction from the second end toward the first end; and,', 'a plurality of ports through the one or more bearing housings providing flow paths for process fluid to pass through the one or more bearing housings and lubrication paths directing process ...

PUMPS

Pump designs are detailed. A pump may include a fan having one or more pass-through holes allowing ambient air to be drawn through a fan near a motor shaft bearing for cooling purposes. Alternatively or additionally, a pump may include modular stages to facilitate servicing and repair. 1. A pump comprising:a. a wet end body defining (i) a liquid inlet and (ii) a liquid outlet;b. a rotatable motor shaft; and i. a central opening configured to receive the rotatable motor shaft;', 'ii. a front;', 'iii. a rear;', 'iv. an outer periphery;', 'v. a first plurality of blades extending from the rear;', 'vi. a second plurality of blades extending from the front; and', 'vii. a plurality of pass-through holes from the rear to the front., 'c. a fan comprising2. A pump according to in which each blade of the first plurality of blades defines a first end adjacent the central opening and a second end adjacent the outer periphery.3. A pump according to in which each blade of the second plurality of blades defines a first end adjacent the central opening and a second end adjacent the outer periphery.4. A pump according to in which each blade of the first plurality of blades has a first depth and each blade of the second plurality of blades has a depth less than the first depth.5. A pump according to further comprising a fan assembly comprising:a. a cover having a non-solid face; andb. an interior in which the fan is positioned.6. A pump according to in which the interior is configured such that air entering it through the cover exits both (a) through the plurality of pass-through holes of the fan and (b) around the outer periphery of the fan.7. A pump according to further comprising a base and in which the cover is removable so as to expose the interior without needing access claim 5 , from a bottom side of a motor of which the rotatable motor shaft is a part claim 5 , to any fasteners.8. A pump according to further comprising a screw (a) received by the cover and (b) forming part of ...

TURBO COMPRESSION SYSTEM

A turbo compression system comprises a first impeller having a first inlet and a first outlet; a second impeller having a second inlet and a second outlet; a second discharge flow path connected with the second outlet; a first discharge flow path communicating the second discharge flow path with the first outlet; a first valve provided at the first discharge flow path and controlling flowing of the fluid; a second intake flow path connected with the second inlet and selectively making the fluid flow into the second impeller; a second valve provided at one end of the second intake flow path; and a compression flow path connected with the first valve at one end of the compression flow path and connecting with the second intake flow path at the other end of the compression flow path. 1. A turbo compression system , comprising:a first impeller having a first inlet and a first outlet, compressing fluid flowing in through the first inlet by rotation motion and then discharging out through the first outlet;a second impeller having a second inlet and a second outlet, compressing fluid flowing in through the second inlet by rotation motion and then discharging out through the second outlet;a second discharge flow path connected with the second outlet;a first discharge flow path communicating the second discharge flow path with the first outlet;a first valve provided at the first discharge flow path and controlling flowing of the fluid;a second intake flow path connected with the second inlet and selectively making the fluid flow into the second impeller;a second valve provided at one end of the second intake flow path; anda compression flow path connected with the first valve at one end of the compression flow path and connecting with the second intake flow path at the other end of the compression flow path.2. The turbo compression system as claimed in claim 1 , further comprises:a motor having two rotation shafts provided at one side and the other side of the motor and ...

Actuation method and efficiency

A multi-stage centrifugal pump assembly allows for multiple fixed ratio pressure levels. The multiple pressure levels permit optimization of actuation loops without the need for pressure regulators, and can be used directly by the actuators.

CENTRIFUGAL PUMP STAGE, CENTRIFUGAL PUMP AND USE OF A PUMP STAGE

The pump stage for a centrifugal pump comprises an impeller unit () having an axial hub and a diffuser unit () extended at a first face of said impeller unit (). The impeller unit () is supported floating inside the diffuser unit (). A shim ring () is associated with the impeller unit () and is sustained in sliding support on a washer () housed in a fixed position in a correspondent seat () of the diffuser unit () of an adjacent pump stage. 1. A pump stage for a centrifugal pump , comprising:an impeller unit comprising an axial hub suitable to be mounted on a pump shaft of the centrifugal pump coaxial with the pump shaft;a diffuser unit extending at a first face of said impeller unit;an aspiration lid associated with said diffuser unit and extended at a second face of said impeller unit, said impeller unit floating inside said diffuser unit, said impeller unit being associated with a shim ring mounted fixed on said axial hub and sustained in sliding support on a washer housed in a fixed position in a correspondent seat of the diffuser unit of an adjacent pump stage, said impeller unit being in sliding contact with said aspiration lid, along an annular portion extended at said second face.2. A pump stage according to claim 1 , wherein claim 1 , in a starting or breaking in step claim 1 , between said annular portion of said impeller unit and said aspiration lid a little play is shaped claim 1 , such as to minimize hydraulic losses by leak without there being a contact.3. A pump stage according to claim 1 , herein a portion of said shim ring protrudes from said axial hub of the impeller unit and axially crosses said aspiration lid of the impeller unit for engaging in sliding support said washer of the diffuser unit of the adjacent pump stage.4. A pump stage according to claim 2 , wherein claim 2 , at an end of said starting or breaking in step claim 2 , said impeller unit is in support with said shim ring on said washer of the diffuser unit of the adjacent pump stage ...

CENTRIFUGAL PUMP ASSEMBLY

A water supply system () includes an electric motor () and a centrifugal pump () which is driven by the electric motor () and with at least one impeller () which produces a main delivery flow () through an annular space () as well as a cooling fluid delivery flow () through a space () surrounding the motor (). The annular space () is divided by two guide vanes into part-annular-spaces () which have a different pressure level on operation. Each part-annular-space () is conductively connected to the space () which surrounds the motor () and through which the cooling fluid runs. 1. A centrifugal pump assembly for forming a part of a water supply system , the centrifugal pump assembly comprising:an electric motor; and at least one impeller which produces a main delivery flow through an annular space surrounding at least one pump stage;', 'a space surrounding the electric motor, a cooling fluid delivery flowing through the space surrounding the electric motor; and', 'at least two guide vanes, wherein the annular space is divided by the at least two guide vanes into part-annular-spaces which have a different pressure level on operation, and each part-annular-space is fluid conductively connected to the space surrounding the motor., 'a single-stage or multi-stage centrifugal pump driven by the electric motor, said centrifugal pump comprising2. A centrifugal pump assembly according to claim 1 , wherein the guide vanes are arranged diametrically in the annular space and form part of the a last pump stage or are arranged after the last pump stage.3. A centrifugal pump assembly according to claim 1 , wherein the annular space is delimited at least partly by a pump casing.4. A centrifugal pump assembly according to claim 3 , wherein the centrifugal pump is a multi-stage centrifugal pump with a last pump stage formed by the impeller with the surrounding guide vanes in the pump casing and a first and any further pump stages are arranged within a cylinder jacket which inwardly ...

BATCH CHANGE CONTROL FOR VARIABLE SPEED DRIVEN CENTRIFUGAL PUMPS AND PUMP SYSTEMS

A pump station positioned to receive a first flow of fluid from a pipeline and to discharge a second flow of fluid into the pipeline includes an interface detection instrument positioned at an upstream point and operable to measure a sonic velocity, a temperature, and a flow rate of the fluid at the upstream point. A first pump is operable at a first speed to receive the first flow of fluid and discharge a pressurized flow of fluid, a first discharge pressure controller is positioned within the pressurized flow of fluid and operable to control the pressure of the pressurized flow of fluid, and a control assembly is coupled to the interface detection instrument to receive the measured sonic velocity, temperature, and flow rate. The control assembly is operable to calculate a desired pump speed based at least in part on the measured sonic velocity and temperature and a variable frequency drive is coupled to the control assembly and is operable to adjust the first speed to match the desired speed at or before the arrival at the first pump of the fluid measured at the upstream point. 1. A pump station positioned to receive a first flow of fluid from a pipeline and to discharge a second flow of fluid into the pipeline , the pump station comprising:a first pump operable at a first speed to receive the first flow of fluid and discharge a pressurized flow of fluid;a first discharge pressure controller positioned within the pressurized flow of fluid and operable to control the pressure of the pressurized flow of fluid;a second pump operable at a second speed to receive the pressurized flow of fluid and discharge the second flow of fluid into the pipeline;an interface detection instrument operable to measure a sonic velocity of a fluid within the pipeline at a point upstream of the first pump; anda control assembly coupled to the interface detection instrument to receive the measured sonic velocity, the control assembly operable to calculate one of the viscosity and the ...

Upthrust Module for Well Fluid Pump

A well fluid pump assembly includes a rotary pump having a rotatable pump shaft. A motor is cooperatively engaged with the pump shaft for rotating the pump shaft. An upthrust module has an upthrust module housing having a lower end secured by a threaded engagement to an upper end of the pump. An upthrust module shaft is rotatably mounted in the housing and has a lower end in engagement with an upper end of the pump shaft for transferring upthrust on the pump shaft to the upthrust module shaft. An upthrust base is stationarily mounted in the housing. An upthrust runner is mounted to the upthrust module shaft for rotation therewith and located below the upthrust base. The upthrust runner engages the upthrust base to transfer to the housing upthrust applied to the upthrust module shaft from the pump shaft. 1. A well fluid pump assembly , comprising:a rotary pump having a rotatable pump shaft;a motor cooperatively engaged with the pump shaft for rotating the pump shaft;an upthrust module, comprising:an upthrust module housing having a lower end secured by a threaded engagement to an upper end of the pump;an upthrust module shaft rotatably mounted in the housing and having a lower end in engagement with an upper end of the pump shaft for transferring upthrust on the pump shaft to the upthrust module shaft;an upthrust base stationarily mounted in the housing; andan upthrust runner mounted to the upthrust module shaft for rotation therewith and located below the upthrust base, the upthrust runner engaging the upthrust base to transfer to the housing upthrust applied to the upthrust module shall from the pump shaft.2. The assembly according to claim 1 , further comprising:a well fluid discharge adapter on an upper end of the upthrust module for connection to a string of production tubing.3. The assembly according to claim 1 , further comprising:a well fluid flow passage extending through the upthrust module for flowing well from the pump through the upthrust module and to a ...

BLADELESS FLUID PROPULSION PUMP

A method of manufacturing a rotor assembly for a bladeless pump is provided, the method comprising providing an injection mold or stamping having a reference mark; injection molding or stamping multiple rotors from the mold or stamp, the rotors having a reference mark thereon and spokes; and assembling the rotors on an axle such that any balances eccentricities are minimized. A pump is provided having a rotor assembly having multiple rotors, each rotor with an outer periphery and an axle; a rotor assembly housing; a spiral volute having a knife edge wherein the rotor assembly is mounted close to the knife edge. 1. A method of manufacturing a rotor assembly for a bladeless pump , the method comprising:providing an injection mold or stamping having a reference mark;injection molding or stamping multiple rotors from the mold or stamp, the rotors having a reference mark thereon and spokes; andassembling the rotors on an axle such that any balances eccentricities are minimized.2. The method of claim 1 , wherein the assembling step comprises rotating and entraining successive rotors with their reference marks on opposite sides of the axle and such that the spokes are aligned.3. The method of claim 2 , wherein the rotors have standoffs defining standoff radii and claim 2 , during assembling claim 2 , placing one rotor with respect to an adjacent rotor so as to keep spokes aligned.4. The method of claim 3 , wherein the placing aligns the standoff radii.5. The method of claim 3 , wherein the placing spaces angularly the standoff radii.6. The method of claim 1 , wherein the mold or stamping is adapted to produce rotors with perforations and wherein during the assembling step claim 1 , one aligns the perforations and further including the step of introducing a rotor fusing agent through the aligned perforations.7. The method of claim 1 , wherein the mold or stamping creates rotors with dimples and wherein during the assembling step claim 1 , the rotors with the dimples are ...

HYDRAULICALLY BALANCED PUMP DISCHARGE

A horizontal pumping system for pumping fluids into downstream piping includes a motor and a pump driven by the motor. The pump includes a discharge assembly for use in connecting a pump within a horizontal pumping system to downstream piping. The discharge assembly preferably includes a discharge head and a stub end configured for sliding engagement with the discharge head. The stub end is captured within the discharge head in a hydraulically balanced condition and the discharge assembly further includes a hydraulic balance chamber and a runner plate within the hydraulic balance chamber. The runner plate is secured to the stub end. 1. A discharge assembly for use in connecting a pump within a horizontal pumping system to downstream piping , the discharge assembly comprising:a discharge head; anda stub end configured for sliding engagement with the discharge head.2. The discharge assembly of claim 1 , wherein the discharge assembly further comprises:a hydraulic balance chamber; anda runner plate within the hydraulic balance chamber, wherein the runner plate is secured to the stub end.3. The discharge assembly of claim 2 , wherein the hydraulic balance chamber comprises:a high pressure chamber; anda low pressure chamber.4. The discharge assembly of claim 3 , wherein the stub end comprises:an interior; anda pressure port that places the high pressure chamber in fluid communication with the interior.5. The discharge assembly of claim 3 , wherein the stub end has a proximal end wall that has a stub end cross-sectional area claim 3 , and wherein the high pressure chamber has a cross-sectional area that is substantially the same as the stub end cross-sectional area.6. The discharge assembly of claim 3 , wherein the discharge head includes a vent that places the low pressure chamber in fluid communication with an external atmosphere.7. The discharge assembly of claim 2 , wherein the runner plate is secured to the stub end with a lock selected from the group consisting of ...

Electrical submersible pumping systems

Systems and methods facilitate pumping of various fluids such as well fluids. An electric submersible pumping system is constructed with an outer housing that contains an integrated pump and motor. The pump may include an impeller disposed within a stator of the motor. The integration of the pump and the motor enables elimination of various components of traditional electric submersible pumping systems to thus provide a simpler and more compact system for pumping fluids.

NON-RETURN VALVE

A non-return valve () for a water supply system () or a pump () is integrated in a flow channel () of the water supply system (). The non-return valve () includes a sealing body () which is mounted within the channel (), blocks the channel () in a first position forming the closure position and releases the channel () in a second position forming the opened position. The sealing body () is movably arranged on a holder () which includes a closure body (), with which the holder () is releasably fastened in a housing opening. 1. A water supply system , comprising:a housing comprising an inlet connection, an outlet connection and a housing opening, the inlet connection and the outlet connection being located on one side of the housing;a flow channel, at least a portion of the flow channel being located between the inlet connection and the outlet connection;a non-return valve integrated into the flow channel, the non-return valve comprising a sealing body and a holder, the sealing body being movably mounted within the flow channel and the sealing body being configured to block the channel in a first position forming a closure position and the sealing body being configured to release the channel in a second position forming an opened position, the holder comprising a closure body, with which the holder is releasably fastened in the housing opening, wherein the sealing body is movably arranged on the holder.2. A water supply system according to claim 1 , wherein the holder claim 1 , at one end claim 1 , comprises the closure body claim 1 , which is configured as a closure plug claim 1 , and claim 1 , at another end claim 1 , comprises the sealing body claim 1 , at least a portion of the holder being located opposite the outlet connection.3. A water supply system according to claim 1 , wherein the non-return valve further comprises a thread connection or a bayonet connection between the closure body and the housing opening.4. A water supply system according to claim 2 , ...

SUBMERSIBLE PUMP COMPONENT AND METHOD OF COATING THEREOF

A submersible pump component is provided. The component includes a substrate including an outer surface in a plurality of orientations, wherein a first portion of the outer surface is configured to be worn by a first wear mechanism, and a second portion of said outer surface is configured to be worn by a second wear mechanism. The component also includes at least one layer of a first coating applied to the outer surface, and at least one layer of a second coating applied over said first coating at said second portion of said outer surface. The first coating is configured to inhibit the first wear mechanism at the first portion of the outer surface, and the second coating is configured to inhibit the second wear mechanism at the second portion of the outer surface. 1. A submersible pump component comprising:a substrate comprising an outer surface in a plurality of orientations, wherein a first portion of said outer surface is configured to be worn by a first wear mechanism, and a second portion of said outer surface is configured to be worn by a second wear mechanism;at least one layer of a first coating applied to said outer surface, wherein said first coating is configured to inhibit the first wear mechanism at said first portion of said outer surface; andat least one layer of a second coating applied over said first coating at said second portion of said outer surface, wherein said second coating is configured to inhibit the second wear mechanism at said second portion of said outer surface.2. The component in accordance with claim 1 , wherein the first wear mechanism is abrasion by at least one of two-body and three-body abrasion claim 1 , and the second wear mechanism is erosion by particles entrained in fluid flow.3. The component in accordance with claim 1 , wherein said first coating is formed from a combination of diamond particles and a composition including nickel and phosphorous.4. The component in accordance with claim 3 , wherein the combination ...

Cleaning Multi-Stage Centrifugal Pumps

Multistage centrifugal pumps are cleaned using ultrasonic energy and without disassembling the pump. The system can be at a permanent installation where the pump is brought for cleaning. The fully assembled pump is submerged in a tank of fluid and cleaning solution is circulated through the pump while ultrasonic energy is applied to the tank. Alternately, a portable pump cleaning system is taken to the site where the pump is working, such as a well site. The pump is cleaned by circulating a cleaning fluid through the pump while ultrasonic energy is applied to the pump housing. Still further, ultrasonic energy may be applied to the pump housing while it continues to pump a working fluid. Flow resistance through the pump is monitored to determine when the cleaning process is complete. In all three applications, disassembly of the pump is unnecessary, providing a major savings in time and money.

DOWNHOLE ELECTRICAL SUBMERSIBLE PUMP WITH UPTHRUST BALANCE

In accordance with embodiments of the present disclosure, a electrical submersible pump includes a pump housing, a shaft extending at least partially through the pump housing and adapted to be driven by a submersible motor, an impeller attached to the shaft and having an impeller passage for fluid to flow therethrough, and a diffuser that is stationary relative to the pump housing and having a diffuser passage, wherein the diffuser is disposed corresponding to the impeller to form a pump stage such that fluid can flow between the impeller passage and the diffuser passage. The electrical submersible pump also includes a labyrinth seal formed between the impeller and the diffuser, wherein the labyrinth seal selectively seals the impeller passage from a cavity formed between the impeller and the diffuser to maintain the impeller in a floating condition relative to the diffuser. 1. A electrical submersible pump , comprising:a pump housing;a shaft extending at least partially through the pump housing and adapted to be driven by a submersible motor;an impeller attached to the shaft and having an impeller passage for fluid to flow therethrough;a diffuser that is stationary relative to the pump housing and having a diffuser passage, wherein the diffuser is disposed corresponding to the impeller to form a pump stage such that fluid can flow between the impeller passage and the diffuser passage; anda labyrinth seal disposed between the impeller and the diffuser, the labyrinth seal forming a seal between the impeller passage from a cavity formed between the impeller and the diffuser to maintain the impeller in a floating condition relative to the diffuser.2. The electrical submersible pump of claim 1 , wherein the labyrinth seal is formed into an edge of the impeller extending toward the diffuser.3. The electrical submersible pump of claim 1 , wherein the labyrinth seal is formed into an edge of the diffuser extending toward the impeller.4. The electrical submersible pump of ...

Modular, multi-stage, integral sealed motor pump with integrally-cooled motors and independently controlled rotor speeds

An integral motor pump module directs at least 90% of its rotor discharge over at least 50% of its motor housing surface, thereby cooling the motor with little or no need for a separate flow path. The discharge can flow through an annulus formed between the motor and pump housings, and can extend over substantially all of the sides and rear of the motor housing. The rotor can be fixed to a rotating shaft, or rotate about a fixed shaft, which can be threaded into the motor and/or module housing. A plurality of the modules can be combined into a multi-stage pump, with rotor speeds independently controlled by corresponding variable frequency drives. The motor can be a radial or axial permanent magnet or induction motor. A separate cooling flow can provide additional cooling e.g. when pumping heated process fluids. Embodiments include guide vanes and/or diffusers.

ELASTOMERIC SEAL BAG PROTECTOR

A downhole tool includes an electric submersible pump to pump a well fluid to a surface of a borehole. The downhole tool includes a motor to power the electric submersible pump and a seal section to protect the motor from the well fluid. The seal section includes an elastomeric bag and a clamp at each end of the elastomeric bag to secure the elastomeric bag. The seal section includes an elastomeric bag protector secured around each clamp, wherein the elastomeric bag protector extends axially beyond a respective clamp to surround a tapered portion of the elastomeric bag above and below the clamp, and wherein the elastomeric bag protector has a sloped inner diameter that matches a profile of the tapered portion. 1. A downhole tool comprising:an electric submersible pump to pump a well fluid to a surface of a borehole;a motor to power the electric submersible pump; and an elastomeric bag;', 'a clamp at each end of the elastomeric bag to secure the elastomeric bag; and', 'an elastomeric bag protector secured around each clamp, wherein the elastomeric bag protector extends axially beyond a respective clamp to surround a tapered portion of the elastomeric bag above and below the clamp, and wherein the elastomeric bag protector has a sloped inner diameter that matches a profile of the tapered portion., 'a seal section to protect the motor from the well fluid, the seal section comprising,'}2. The downhole tool of claim 1 , wherein an outer diameter of the elastomeric bag protector includes a number of channels.3. The downhole tool of claim 2 , wherein the number of channels are axially extended relative to the elastomeric bag protector.4. The downhole tool of claim 3 , further comprising a housing to enclose the seal section.5. The downhole tool of claim 4 , wherein the number of channels define a plurality of passages for the well fluid to traverse a surface of the elastomeric bag protector between the elastomeric bag protector and the housing.6. The downhole tool of claim ...

MULTISTAGE PUMP

A multistage pump includes a pump casing, a shaft, a first impeller, a second impeller, and a pipe. The shaft is rotatably disposed within the pump casing and has a longitudinal axis. The first impeller is disposed within the casing at a first position along the shaft. The second impeller is disposed within the casing at a second position and along the shaft. The pipe is detachably attached to the pump casing, and has an inlet and an outlet, the inlet disposed at the discharge of the first impeller and the outlet disposed at an eye of the second impeller, such that discharge from the first impeller can be conveyed to the eye of the second impeller. 1. A multistage pump , comprising:a pump casing;a shaft rotatably disposed within the pump casing and having a longitudinal axis;a first impeller disposed within the casing at a first position along the shaft;a second impeller disposed within the casing at a second position and along the shaft; anda pipe detachably attached to the pump casing, and having an inlet and an outlet, the inlet disposed at the discharge of the first impeller and the outlet disposed at an eye of the second impeller, such that discharge from the first impeller can be conveyed to the eye of the second impeller.2. The multistage pump of claim 1 , whereinthe pipe is formed separately from the pump casing.3. The multistage pump of claim 1 , whereinthe pipe includes a block flange and is configured to be bolted to the pump casing by the block flange.4. The multistage pump of claim 1 , whereinthe pipe has a generally circular internal cross-section.5. The multistage pump of claim 1 , whereinthe multistage pump has 11 stages.6. The multistage pump of claim 1 , whereinthe multistage pump has 4 stages.7. The multistage pump of claim 1 , whereinthe pipe is a crossover pipe and the multistage pump includes a crossunder pipe detachably attached to the pump casing.8. The multistage pump of claim 1 , whereinthe pipe is a crossunder pipe and the multistage pump ...

MULTISTAGE CENTRIFUGAL PUMP

A multistage pump for conveying a fluid includes an outer pump housing, at least first and last stages arranged in the outer pump housing. Each stage includes a stage casing, an impeller, and a diffuser. A pump inlet supplies the fluid to the impeller of the first stage and, a pump outlet discharges the fluid. Each impeller is mounted to a pump shaft in a torque proof manner, and the impellers are arranged one after another on the pump shaft. The last stage includes a collector with a collector chamber to receive the fluid from the diffuser of the last stage. The first stage includes guide channels to receive the fluid from a diffusor and to guide the fluid to the impeller of the next stage. The collector chamber is displaced in the axial direction with respect to the diffusor of the last stage. 1. A multistage pump for conveying a fluid , comprising:an outer pump housing;a plurality of stages arranged in the outer pump housing, the plurality of stages comprising at least a first stage and a last stage, each of the first stage and the last stage comprising a stage casing, an impeller configured to act on the fluid, and a diffuser configured to surround the impeller and to receive the fluid from the impeller;a pump inlet configured to supply the fluid to the impeller of the first stage;a pump outlet configured to discharge the fluid; anda pump shaft configured to rotate about an axial direction,each impeller of the first stage and the last stage mounted to the pump shaft in a torque proof manner, the impeller for the first stage and impeller for the last stage arranged one after another on the pump shaft, the last stage comprises a collector with a collector chamber configured to receive the fluid from the diffuser of the last stage, and the first stage comprises guide channels configured to receive the fluid from the diffusor of the first stage and to guide the fluid to the impeller of a next stage, the collector chamber being displaced in the axial direction with ...

Threaded Connection with Engaging Lugs for Electrical Submersible Pump

An electrical submersible pump assembly has modules including a pump, a motor, and a seal section. A threaded connection between at least two of the modules has a first adapter and a second adapter. A collar rotatably carried and axially movable on one of the adapters is in threaded engagement with threads of the other adapter when the threaded connection is made up. First adapter lugs are spaced circumferentially apart from each other around the first adapter. Second adapter slots are spaced circumferentially apart from each other around the second adapter. The lugs slide into the slots while the adapters are brought together. Each of the lugs and each of the slots have side edges that are parallel with the axis. The side edges of the lugs abut the side edges of the slots to prevent rotation of the first and second adapters relative to each other. 1. An electrical submersible pump assembly , comprising:a plurality of modules including a pump, a motor, and a seal section for reducing a pressure differential between lubricant in the motor and hydrostatic pressure of well fluid;a threaded connection between at least two of the modules, comprising:a first adapter and a second adapter, the first and second adapters having a longitudinal axis;a collar rotatably carried and axially movable on one of the adapters, the collar being in threaded engagement with threads of the other adapter when the threaded connection is made up;first adapter lugs spaced circumferentially apart from each other around the first adapter;second adapter slots spaced circumferentially apart from each other around the second adapter; whereinthe lugs slide into the slots while the adapters are brought together; andeach of the lugs and each of the slots have side edges that are parallel with the axis, the side edges of the lugs abutting the side edges of the slots to prevent rotation of the first and second adapters relative to each other.2. The assembly according to claim 1 , further comprising:a ...

METHOD AND SYSTEM FOR INTENSIFYING SLURRY PRESSURE

A pressure intensifier system includes a housing including a piston separating a first volume and a second volume. A high pressure pump, a low pressure manifold are coupled to a drain line and a slurry tank. A plurality of valves comprise a first state coupling the high pressure pump to the first volume and coupling the second volume to the low pressure manifold so a first portion of fluid in the second volume is communicated to the slurry tank and a second portion of the fluid is communicated to the drain. The valves comprise a second state coupling the high pressure pump to the second volume and coupling the first volume to the low pressure manifold so a first portion of fluid in the first volume is in communication with the slurry tank and a second portion of the fluid in first volume is in communication with the drain. 1. A pressure intensifier system comprising:a housing comprising a piston therein, said piston defining a first volume and a second volume within the housing;a high pressure pump;a low pressure manifold coupled to a drain line and a slurry tank;a plurality of valves selectively coupling the high pressure pump to the first volume or the second volume and selectively coupling the first volume to the low pressure manifold, said plurality of valves comprising a first state coupling the high pressure pump to the first volume and coupling the second volume to the low pressure manifold so that a first portion of fluid in the second volume is in communication with the slurry tank and a second portion of the fluid is in communication with the drain, said plurality of valves comprising a second state coupling the high pressure pump to the second volume and coupling the first volume to the low pressure manifold so that a first portion of fluid in the first volume is in communication with the slurry tank and a second portion of the fluid in first volume is in communication with the drain.2. The pressure intensifier system of wherein the high pressure pump ...

FUEL PUMPING UNIT

A fuel pumping unit has a low pressure centrifugal pump and a high pressure centrifugal pump. In use, the low pressure pump supplies fuel at a boosted pressure to the high pressure pump for onward supply to a fuel metering unit. The pumping unit further has a drive input which drives the low and high pressure pumps. A gear arrangement is operatively located between the drive input and the low and high pressure pumps such that the low and high pressure pumps are driven at different speeds by the drive input. 1. A fuel pumping unit having a low pressure centrifugal pump and a high pressure centrifugal pump , in use , the low pressure pump supplying fuel at a boosted pressure to the high pressure pump for onward supply to a fuel metering unit;the pumping unit further having a drive input which drives the low and high pressure pumps, a gear arrangement being operatively located between the drive input and the low and high pressure pumps such that the low and high pressure pumps are driven at different speeds by the drive input; andthe pumping unit further having a selector valve which is configured to selectably provide a high pressure mode and a low pressure mode, wherein:in the high pressure mode the low pressure pump supplies fuel at the boosted pressure to the high pressure pump for onward supply to the fuel metering unit; andin the low pressure mode the fuel supply from the low pressure pump to the high pressure pump is shut off such that the high pressure pump runs dry and the low pressure pump supplies fuel to the fuel metering unit.2. A fuel pumping unit according to claim 1 , wherein the high pressure pump is driven at a higher speed than the low pressure pump.3. A fuel pumping unit according to claim 1 , wherein the gear arrangement includes a bevel gear drive.4. A fuel pumping unit according to further having an axial flow inducer at the inlet to the low pressure pump.5. A fuel pumping unit according to claim 1 , wherein the axes of the low and high pressure ...

CENTRIFUGAL PUMP FOR PROCESSING MOLTEN UREA AND RELATIVE PLANT

A centrifugal pump () for processing molten urea having: an inlet () adapted to receive molten urea at a suction pressure; a delivery outlet () adapted to allow an output of molten urea at a delivery pressure greater than the suction pressure; and an intermediate outlet () adapted to allow an output of molten urea at an intermediate pressure greater than the suction pressure and lower than the delivery pressure. 1. A centrifugal pump for processing molten urea having:an inlet adapted to receive molten urea at a suction pressure;a delivery outlet adapted to allow an output of molten urea at a delivery pressure greater than said suction pressure;an intermediate outlet adapted to allow an output of molten urea at an intermediate pressure greater than said suction pressure and lower than said delivery pressure.2. The centrifugal pump according to claim 1 , comprising a plurality of centrifugal stages arranged in series; 'an intermediate pressure stage arranged and/or configured to cause a molten urea pressure equal to said intermediate pressure;', 'said plurality of centrifugal stages comprisingsaid intermediate outlet being arranged at said intermediate pressure stage to receive molten urea from said intermediate pressure stage.3. The centrifugal pump according to claim 2 , wherein said plurality of centrifugal stages comprises:an initial stage arranged at said inlet to receive molten urea from said inlet;a final stage arranged at said delivery outlet to send molten urea to said delivery outlet;said intermediate pressure stage being operatively arranged between said initial stage and said final stage.4. The centrifugal pump according to claim 2 , wherein said intermediate outlet is arranged at an upper end of said intermediate pressure stage to allow a gas extraction from said intermediate pressure stage through said intermediate outlet.5. The centrifugal pump according to claim 4 , wherein said intermediate pressure stage has a compression chamber claim 4 , an ...

ELECTRIC COMPRSSOR AND METHOD FOR ASSEMBLING ELECTRIC COMPRESSOR

An electric compressor and a method for assembling the same include: an electric motor unit including a stator fixed to a housing by a press-fitting to an inner peripheral wall of the housing and a rotor rotatably arranged inside the stator; a compression unit configured to be driven by a rotational drive force of the electric motor unit and compress a coolant; and a guide member attached to an outer periphery of the stator and having a guiding curved surface portion configured to guide the press-fitting of the stator to the inner peripheral wall of the housing. 1. An electric compressor comprising:a cylindrical housing;an electric motor unit fixed inside the housing and including a stator and a rotor, the stator being fixed to the housing by a press-fitting of the stator to an inner peripheral wall of the housing and configured to generate a magnetic force upon energization of the stator, the rotor being rotatably arranged inside the stator and configured to be rotated by the magnetic force generated by the stator;a compression unit arranged in the housing and configured to be driven by a rotational drive force of the electric motor unit and compress a coolant; anda guide member attached to an outer periphery of the stator and made of a thin plate material having a guiding curved surface portion configured to guide the press-fitting of the stator to the inner peripheral wall of the housing.2. The electric compressor according to claim 1 , wherein the guiding curved surface portion has a curved surface extending in a direction toward a center of the stator from an end portion of the stator from which the stator is inserted into the housing.3. The electric compressor according to claim 1 , wherein the guide member includes a displacement preventing portion extending from the guiding curved surface portion and configured to prevent a displacement of the guide member in an axial direction of the guide member in the press-fitting of the stator to the inner peripheral ...

Method and Pump Arrangement for Evacuating a Chamber

A method for evacuating a chamber employs a pump arrangement composed of a booster pump and of a downstream forepump is connected to the chamber. The booster pump is accelerated, gas from the chamber is introduced into the booster pump, such that from the booster pump there is temporarily extracted an excess power which exceeds the power provided by the drive of the booster pump. The gas is discharged through a bypass valve while the outlet pressure of the booster pump lies above a predefined threshold value, and the gas is directed to the forepump when the outlet pressure of the booster pump has fallen below the threshold value. The gas supplied by the booster pump is compressed by means of the forepump. 116-. (canceled)17. A method for evacuating gas from a chamber , wherein a pump arrangement composed of a booster pump and of a downstream forepump is connected to the chamber , having the following steps:accelerating the booster pump by energizing a drive of the booster pump;introducing the gas from the chamber into the booster pump, such that from the booster pump there is temporarily extracted an excess power which exceeds the power provided by the drive of the booster pump;delivering the gas to an outlet of the booster pump, wherein the gas is discharged through a bypass valve for as long as an outlet pressure of the booster pump lies above a predefined threshold value and the gas is conducted onward to the forepump when the outlet pressure of the booster pump has fallen below the threshold value; andcompressing, by means of the forepump, the gas supplied from the booster pump.18. The method of claim 17 , wherein the booster pump is accelerated with an inlet of the booster pump closed.19. The method of claim 17 , wherein said drive has a drive power and claim 17 , at its peak claim 17 , the excess power amounts to at least 50% of the drive power.20. The method of claim 17 , wherein the excess power is extracted during at least 10% of a time required to evacuate ...

MULTISTAGE CENTRIFUGAL PUMP WITH SHAFT HYDRAULIC FORCE COMPENSATION

A multistage centrifugal pump () has impellers () arranged on a common shaft (), which is rotatably arranged within a pump casing (-). One end of the shaft () is led out of the casing (-) for connection to a drive motor and another shaft end () is rotatably mounted in the pump casing (-). The shaft end () which is mounted within the pump casing (-) is subjected to a counter-force which is produced by way of pressure subjection via a conduit connection to a delivery side of the pump. An axial seal () is provided on the shaft end () arranged within the pump casing (-). The rotating part of the axial seal is led on the shaft end and the non-rotating part is led, axially movably, within the pump casing (-). A sealing arrangement is provided between the pump casing and the axially movably mounted part. 1. A multistage centrifugal pump comprising:a pump casing;a shaft rotatably arranged within the pump casing with one shaft end led out of the casing for connection to a drive motor and another shaft end arranged within the pump casing;pump stage impellers arranged on the shaft;a conduit connection to a delivery side of the pump, wherein the shaft end which is arranged within the pump casing is subjected to a counter-force which is produced by way of pressure subjection via the conduit connection;an axial seal provided on the shaft end arranged within the pump casing, the axial seal having a rotating part that is led on the shaft end which is arranged within the pump casing and the axial seal having a non-rotating and axially movably mounted part that is led within the pump casing in an axially movable manner; anda sealing device provided between the pump casing and the axially movably mounted part.2. A centrifugal pump according to claim 1 , wherein the non-rotating part of the axial seal claim 1 , at an axial side which is away from the sealing surface claim 1 , is subjected to a pressure of the delivery side.3. A centrifugal pump according to claim 1 , wherein the non- ...

MULTISTAGE CENTRIFUGAL PUMP

A multi-stage centrifugal pump includes a pump casing, in which a shaft () carrying an impeller is rotatably arranged. The pump casing has a pump casing foot part () that includes a reversibly closable maintenance opening (), via which a bearing and/or seal (), which is arranged at a shaft end within the pump casing, is accessible and exchangeable. 1. A multistage centrifugal pump comprising:a pump casing;pump stage impellers;a shaft which carries the impellers and is rotatably arranged with an end within the pump casing; anda shaft end cooperating part comprising a bearing or a seal or a bearing and a seal arranged within the pump casing on a shaft end, wherein the pump casing comprises a reversibly closable maintenance opening, via which the shaft end cooperating part is accessible and is exchangeable.2. A centrifugal pump according to claim 1 , further comprising a screw-fastened cover wherein the maintenance opening is closable by the a screw-fastened cover.3. A centrifugal pump according to claim 1 , further comprising a rotation blocking device blocking rotation movement of the shaft.4. A centrifugal pump according to claim 1 , further comprising a motor with a motor shaft claim 1 , wherein the maintenance opening is provided aligned to the motor shaft in a casing wall of the pump casing which is remote to the motor.5. A centrifugal pump according to claim 1 , wherein the shaft is arranged vertically and the maintenance opening is arranged in the base of the pump casing.6. A centrifugal pump according to claim 2 , wherein the cover comprises a part which passes through the opening and receives or forms a rotationally fixed part of a seal of the bearing.7. A centrifugal pump according to claim 2 , wherein a seal of the bearing includes a part which co-rotates with the shaft that is releasably fastened on the shaft end which is arranged within the pump casing.8. A centrifugal pump according to claim 7 , wherein the part of the seal of the bearing which co- ...

CENTRIFUGAL PUMP

The centrifugal pump () includes several pump stages which are arranged axially between a head part () and a foot part (). An outer casing () peripherally surrounds the pump stages. An axial end of the outer casing () is fastened on the head part and the other axial end of the outer casing () is fastened on the foot part. A mechanical connection between the head part () and the foot part () is formed by the outer casing (). 1. A centrifugal pump comprising:a head part;a foot part;several pump stages which are arranged axially between the head part and the foot part; and andan outer casing which peripherally surrounds the pump stages, wherein an axial end of the outer casing is fastened on the head part and another axial end of the outer casing is fastened on the foot part, wherein a mechanical connection between the head part and the foot part is formed by the outer casing wherein the outer casing comprises widened axial ends.2. (canceled)3. A centrifugal pump according to claim 1 , further comprising a flange wherein one of the widened axial ends of the outer casing is fastened by the flange engaging over this end claim 1 , on the head part or the foot part.4. A centrifugal pump according to claim 2 , wherein the axial ends of the outer casing are non-positively as well as positively fastened at least one of on the head part and on the foot part claim 2 , by way of the flange.5. A centrifugal pump according to claim 1 , wherein the axial ends of the outer casing are widened stepwise.6. A centrifugal pump according to claim 3 , wherein the flange comprises a first contact surface and a second contact surface claim 3 , and that the first contact surface bears on the widened axial end of the outer casing claim 3 , and the second contact surface bears one of on the head part and on the foot part.7. A centrifugal pump according to claim 3 , wherein the flange is an annular loose flange.8. A centrifugal pump according to claim 3 , wherein the flange comprises recesses ...

METHOD AND APPARATUS FOR DOSING HYDROGEN IN A CENTRIFUGAL COMPRESSION SYSTEM

A method for supplying hydrogen gas for consumption in at least one downstream process, the method comprising: electrolysing water to provide hydrogen gas; compressing the hydrogen gas in a multistage compression system to provide compressed hydrogen gas; and feeding at least a portion of the compressed hydrogen gas to the downstream process(es); wherein the multistage compression system comprises at least one centrifugal compression stage; wherein the hydrogen gas is dosed with nitrogen gas upstream of the centrifugal compression stage(s); and wherein the nitrogen gas is present in the compressed hydrogen gas when fed to the downstream process(es). 1. A method for supplying hydrogen gas for consumption in at least one downstream process , the method comprising:electrolysing water to provide hydrogen gas;compressing the hydrogen gas in a multistage compression system to provide compressed hydrogen gas; andfeeding at least a portion of the compressed hydrogen gas to the downstream process(es);wherein the multistage compression system comprises at least one centrifugal compression stage;wherein the hydrogen gas is dosed with nitrogen gas upstream of the centrifugal compression stage(s); andwherein the nitrogen gas is present in the compressed hydrogen gas when fed to the downstream process(es).2. The method according to claim 1 , wherein after dosing claim 1 , the hydrogen gas comprises the nitrogen gas in an amount in a range from about 0.5 mol % to about 10 mol %.3. The method according to claim 1 , wherein after dosing claim 1 , the resultant nitrogen-blended hydrogen gas has an apparent molecular weight in a range from about 2.05 to about 7.4. The method according to claim 1 , wherein the hydrogen gas is dosed with the nitrogen gas upstream of an initial stage of the multistage compression system.5. The method according to claim 1 , wherein the hydrogen gas is dosed with the nitrogen gas downstream of an initial stage of the multistage compression system and ...

Pump apparatus

The present invention relates to a pump apparatus for delivering a liquid. The pump apparatus includes a pump (1) having an impeller (5), an electric motor (7) for rotating the impeller (5), and an inverter (10) for driving the electric motor (7) at variable speed. The impeller (5) has a non-limit load characteristic in a predetermined discharge flow-rate range (R). The inverter (10) is configured to drive the electric motor (7) at a preset target operating point (TO) with a rotation speed higher than a rotation speed corresponding to a power frequency of a commercial power source.

COMPACT, MODULAR, INTEGRAL PUMP OR TURBINE WITH COAXIAL FLUID FLOW

A coaxial pump or turbine module directs working fluid past a rotor and through a flow path symmetrically distributed within an annulus formed between an outer module housing and an inner motor or generator coil housing. The inner housing can be cooled by working fluid in the flow path, or by a cooling fluid flowing between passages of the flow path. The flow path can extend over substantially a full length and rear surface of the inner housing. The rotor can be fixed to a rotating shaft, or rotate about a fixed shaft, which can be threaded into the motor and/or module housing. A plurality of the modules can be combined into a multi-stage apparatus, with rotor speeds independently controlled by corresponding variable frequency drives. The motor or generator can include radial or axial permanent magnets and/or induction coils. Embodiments include guide vanes and/or diffusers. 1. A sealless pump or turbine module having an integral motor or generator , the module comprising:an inlet located at a proximal end of the module, the inlet being on a central axis of the module;an outlet located at a distal end of the module, the outlet being on a central axis of the module;an outer housing surrounding the module;a rotor suspended within the outer housing;a motor within the outer housing configured to drive a rotation of the rotor, or a generator within the outer housing configured to be driven by the rotation of the rotor, the motor or generator comprising:a stator within an inner housing, the stator comprising an electromagnet directed toward the rotor; anda plurality of magnetic devices cooperative with the rotor and configured to pass in proximity to the electromagnet as the rotor rotates; anda flow path symmetrically distributed about the inner housing;the module being configured to direct a flow of working fluid from the inlet through the flow path to the outlet such that the working fluid is symmetrically distributed about the inner housing as it flows past the stator ...

Torque transfer system for centrifugal pumps

A torque transfer system for centrifugal pumps. A torque transfer system for a centrifugal pump includes a bearing sleeve above an impeller, the bearing sleeve and a hub of the impeller surrounding a rotatable shaft and coupled to the rotatable shaft by a key, the bearing sleeve having a stepped bottom edge, a top edge of the hub stepped inversely to the bottom edge of the bearing sleeve such that the top edge and the bottom edge interlock with a clearance between longitudinally extending portions of the interlocked edges, wherein upon reduction of torque transference between the key and the sleeve, the clearance closes such that the longitudinally extending portion of the stepped top edge contacts the longitudinally extending portion of the stepped bottom edge thereby maintaining rotation of the sleeve with the rotatable shaft. A centrifugal pump includes modules with a series of stepped, interlocked impellers.

ELECTRICAL SUBMERSIBLE MOTOR

A fluid system for a pump, which includes a downhole rotating shaft and bearings inside a housing, and where a fluid volume around shaft is circulated from outside housing through a filter, so that only clean non-abrasive fluid is permitted inside fluid volume pump to draw fluid around the shaft. A fluid expeller is included to expel fluid from the accumulated volume of fluid through the filter to purge the filter. 1. A fluid system for a pump , which includes: a downhole rotating shaft and bearings inside a housing , a fluid volume around the shaft , a circulating fluid from outside the housing through a filter , such that only clean non-abrasive fluid is permitted inside fluid volume pump to draw fluid around the shaft.2. A fluid system according to claim 1 , further including a fluid expeller to expel fluid from the accumulated volume of fluid through the filter to purge the filter.3. A fluid system according to claim 1 , further including a fluid passage through a bearing or bearings.4. A fluid system according to claim 1 , further including a protector hood to deflecting falling solids coming out of suspension.5. A fluid system according to claim 1 , further including a bore through the shaft.6. A fluid system according to claim 1 , further including a valve and inlet port a piston and a valve and outlet port to backflush the system.7. A fluid system according to claim 6 , further including a cam on the shaft to drive the fluid through the inlet valve.8. A fluid system according to claim 1 , wherein two such systems are included at each end of a rotor.9. A fluid system according to claim 1 , wherein there is a continuous fluid flow through rotor The invention relates to a fluid filter to extend the protector life or eliminate protector of a canned electrical submersible motor.In a variety of wellbore environments, electric submersible pumping systems are used to lift fluids from a subterranean location. Although electric submersible pumping systems can utilize ...

CENTRIFUGAL PUMP WITH ADAPTIVE PUMP STAGES

A centrifugal pump with adaptive pump stages includes an impeller configured to provide kinetic energy to fluid flow through the pump. The impeller has multiple geometric dimensions. The pump includes a diffuser connected to the impeller that is configured to convert the kinetic energy provided by the impeller into static pressure energy to flow the fluid through the pump. The pump includes an adaptive material attached to the impeller that is configured to modify, during operation of the pump, a geometric dimension to modify fluid flow through the pump. 125-. (canceled)26. A pump comprising: a first impeller having a plurality of geometric dimensions,', 'a first diffuser fluidly connected to the first impeller, the first impeller and the first diffuser configured flow fluid through the pump, and', 'an adaptive material attached to the first impeller, the adaptive material configured to modify, during operation of the pump, a geometric dimension of the plurality of geometric dimensions to modify fluid flow through the pump; and, 'a first pump stage comprising a second impeller, and', 'a second diffuser fluidly connected to the second impeller, the second impeller and the second diffuser configured flow the fluid through the pump, wherein the second pump stage does not include adaptive materials., 'a second pump stage connected in series with the first pump stage, the second pump stage comprising27. The pump of claim 26 , wherein the plurality of geometric dimensions modified by the adaptive material during the operation of the pump comprises an impeller outer diameter and an impeller blade trailing edge angle.28. The pump of claim 27 , wherein the first impeller comprises an impeller blade having the impeller blade trailing edge angle claim 27 , wherein the adaptive material is configured to increase or decrease the impeller blade trailing edge angle during operation of the pump.29. The pump of claim 28 , wherein a leading edge or a trailing edge of the impeller ...

CENTRIFUGAL PUMP WITH ADAPTIVE PUMP STAGES

A centrifugal pump with adaptive pump stages includes an impeller configured to provide kinetic energy to fluid flow through the pump. The impeller has multiple geometric dimensions. The pump includes a diffuser connected to the impeller that is configured to convert the kinetic energy provided by the impeller into static pressure energy to flow the fluid through the pump. The pump includes an adaptive material attached to the impeller that is configured to modify, during operation of the pump, a geometric dimension to modify fluid flow through the pump. 1. (canceled)2. A pump comprising:a first impeller configured to provide kinetic energy to flow fluid through the pump, the first impeller comprising an impeller blade having a stationary portion and a movable portion made of an adaptive material configured to modify, during operation of the pump, a geometric dimension of the impeller blade to modify fluid flow through the pump; anda first diffuser fluidly connected to the first impeller, the first diffuser configured to convert the kinetic energy provided by the first impeller into static pressure energy to flow the fluid through the pump.3. The pump of claim 2 , wherein the stationary portion extends from an impeller eye of the impeller to a radius between the impeller eye and an outer diameter of the impeller claim 2 , wherein the movable portion extends from an outer edge of the stationary portion to an outer edge of the impeller.4. The pump of claim 3 , wherein an outer tip of the impeller blade extends beyond the outer edge of the impeller.5. The pump of claim 3 , wherein an outer tip of the impeller blade does not extend fully to the outer edge of the impeller.6. The pump of claim 2 , wherein claim 2 , during the operation of the pump claim 2 , the movable portion causes the impeller blade to shift from a first geometry to a second geometry.7. The pump of claim 6 , wherein the movable portion comprises an impeller blade tab that extends into an impeller blade ...

Arrangement for Receiving the Axial Thrust of a Centrifugal Pump

An arrangement for monitoring a centrifugal pump is provided. receiving the residual axial thrust of a centrifugal pump. The arrangement includes a load-relieving device configured to receive the residual axial thrust developed during pump operation, an axial bearing, and a sensor ring is associated with the axial bearing. The ring (10) is divided into segments having sensors at the segment dividing regions.

PUMP

The present disclosure refers to a pump () comprising 1. A pump comprising:a rotor shaft extending along a rotor axis;a bearing body circumferentially encompassing the rotor shaft and comprising a radially outer bearing surface; anda locking ring circumferentially encompassing the rotor shaft and limiting an axial movement of the bearing body relative to the rotor shaft, wherein the locking ring comprises at least two radially inwardly protruding teeth, wherein the locking ring is radially expandable from a locking state to a mounting state against an elastic restoring force of the locking ring, wherein the locking ring is, in the mounting state, positionable at a desired axial position on the rotor shaft, wherein the teeth are configured to press, in the locking state, against a radial outer surface of the rotor shaft by the elastic restoring force of the locking ring.2. The pump according to claim 1 , wherein the locking ring is a first axial stop and further comprising a second axial stop body.3. The pump according to claim 2 , wherein an impeller nut encompassing the rotor shaft for fixing an impeller to the rotor shaft is the second axial stop body.4. The pump according to claim 2 , wherein the second axial stop body defines N≥1 engagement location(s) for preventing a rotational movement of the bearing body relative to the rotor shaft claim 2 , wherein the bearing body comprises a first axial end facing the locking ring and a second axial end facing away from the locking ring claim 2 , wherein the second axial end comprises N≥1 engagement location(s) positive-locking with the engagement location(s) claim 2 , of the second axial stop body.5. The pump according to claim 2 , wherein the second axial stop body and the second axial end of the bearing body comprise N≥2 engagement locations claim 2 , wherein the engagement locations are arranged in an N-fold symmetry with respect to the rotor axis.6. The pump according to claim 5 , wherein a first one of the ...

SEGMENTED CAVITATION BOILER

A cavitation boiler segment includes a rotor to be coupled with a rotating inner drum and a stator surrounding the rotor segment. The rotor and the stator each include drums with two banks of annular apertures, which overlap to define two cavitation regions. The rotor includes a web bifurcating the rotor between the apertures into an upstream side and a downstream side, each forming a separate fluid passage between a face of the rotor and a bank of apertures. The stator includes a casing enclosing the stator apertures in a fluid passageway. In operation, fluid flows into a first side of the rotor, across a first cavitation region and into the stator, then back across the second cavitation region and into the second side of the rotor where the fluid may flow into a first side of an adjacent segment. 122.-. (canceled)23. A cavitation boiler comprising:a housing comprising an inlet and an outlet; and a first annular rotor segment comprising a first bank of apertures through an outer surface of the first rotor segment;', 'a second annular rotor segment comprising a second bank of apertures through an outer surface of the second rotor segment;', 'a first annular stator segment fixed in the housing around the first rotor segment, the first stator segment comprising a third bank of apertures through an inner surface of the first stator segment and adjacent the first bank of apertures; and', 'a second annular stator segment fixed in the housing around the second rotor segment, the second stator segment comprising a fourth bank of apertures through an inner surface of the second stator segment and adjacent the second bank of apertures;, 'a plurality of cavitation boiler segments, each cavitation boiler segment being discrete from one another and comprisingwherein the rotor segments and stator segments define a flowpath configured to direct a flow of fluid from the inlet to the outlet through the first bank of apertures and then through the third bank of apertures, and ...

Spherical Sleeve and Bushing Bearing for Centrifugal Pump Stage

A centrifugal pump has a number of stages, each of the stages having an impeller and a diffuser. The impellers are mounted to the pump drive shaft for rotation. A bearing in at least one of the stages includes a sleeve coupled to the drive shaft for rotation. The sleeve has upper and lower ends and an outer side wall facing radially outward that is convex and spherical. A bushing is mounted in the diffuser and has a bore with an inner side wall facing radially inward that is concave and spherical. A pair of slots is formed in the inner side wall of the bushing 180 degrees apart from each other and extending axially. The slots enable the sleeve to be inserted into the bore with the sleeve axis and bore axis perpendicular to each other, then tilted 90 degrees to coincide the sleeve axis with the bore axis. 1. A submersible pump assembly , comprising:a centrifugal pump having a drive, shaft and a plurality of stages, each of the stages having an impeller and a diffuser, the impellers being mounted to the drive shaft for rotation therewith, the diffusers being mounted in a housing of the pump for non rotation;a motor operatively coupled to the pump for rotating the drive shaft;a bearing in at least one of the stages, comprising:a sleeve having a cylindrical opening coupled to the drive shaft for rotation therewith, the sleeve having upper and lower ends and an outer side wall facing radially outward relative to a sleeve axis, the outer side wall curving outward when viewed in a sleeve axis plane, defining upper and lower outer diameters at the upper and lower ends of the sleeve that are smaller than an intermediate outer diameter halfway between the upper and lower ends;a bushing mounted in the diffuser of said at least one of the stages fur non rotation, the bushing having a bore with a bore axis, the bore having an inner side wall curving inward when viewed in a bore axis sectional plane, defining upper and lower inner diameters at upper and lower ends of the bushing ...

SEALING ARRANGEMENT AND PUMP HAVING A SEALING ARRANGEMENT

The invention relates to a sealing arrangement for a high-pressure space having a bounding element and a termination element. The bounding element has an outer sealing surface and the termination element has an inner sealing surface. The outer sealing surface and the inner sealing surface are arranged such that a sealing-off of the high-pressure space is achieved via a contact of the two sealing surfaces. In accordance with the invention the bounding element is designed such that a force in the direction of the inner sealing surface can act on the outer sealing surface due to a pressure in the high-pressure space. Thereby a sealing function is also achieved then when the termination element deforms due to the pressure in the high-pressure space. The sealing arrangement in accordance with the invention can be used particularly advantageously in pumps. 111111211311411511611711811. A sealing arrangement for a high-pressure space ( , , , , , , , , ) having:{'b': 12', '112', '212', '312', '412', '512', '612', '712', '812', '14', '114', '214', '314', '414', '714', '814, 'a bounding element (, , , , , , , , ) which has an outer sealing surface (, , , , , , ) and'}{'b': 13', '113', '213', '313', '413', '513', '613', '713', '813', '15', '115', '215', '315', '415', '515', '615', '715', '815, 'a termination element (, , , , , , , , ) which has an inner sealing surface (, , , , , , , , ),'}{'b': 14', '114', '214', '314', '414', '714', '814', '15', '115', '215', '315', '415', '715', '815', '11', '111', '211', '311', '411', '511', '611', '711', '811', '14', '114', '214', '314', '414', '714', '814', '15', '115', '215', '315', '415', '715', '815, 'wherein the outer sealing surface (, , , , , , ) and the inner sealing surface (, , , , , , ) are arranged such that a sealing-off of the high-pressure space (, , , , , , , , ) is achieved via a contact of the two sealing surfaces (, , , , , , ; , , , , , , ),'}wherein{'b': 12', '112', '212', '312', '412', '512', '612', '712', '812', '15 ...

AXIALLY SPLIT PUMP

An axially split pump for conveying a fluid has an axially split housing that includes a bottom part and a cover. The bottom part has a first sealing surface and the cover has a second sealing surface, the bottom part and the cover being fastened so that the two sealing surfaces have direct contact. A first sealing groove for the reception of a first string-like sealing element is in the sealing surfaces, and a second sealing groove is provided for the reception of a second string-like element, the second sealing groove being connected to the first sealing groove via an opening. A connection element is in the opening that has two lateral cut-outs respectively for the reception of a one of the string-like sealing elements. The cut-outs are arranged and configured so that the two string-like sealing elements run substantially in parallel in the region of the connection element. 1. An axially split pump for conveying a fluid , comprising:an axially split housing comprising a bottom part and a cover, the bottom part having a first sealing surface and the cover having a second sealing surface, the bottom part and the cover being configured to be fastened to one another so that the first and second sealing surfaces are in direct contact with one another, a first sealing groove configured to receive a first string-like sealing element being disposed in the first and second sealing surfaces, and a second sealing groove being disposed to receive a second string-like sealing element, the second sealing groove being connected to the first sealing groove via an opening, a connection element being disposed in the opening, the connection element having two lateral cut-outs configured to receive a respective one of the first and second string-like sealing elements, the cut-outs being arranged and configured so that the first and second string-like sealing elements are capable of being run substantially in parallel in the region of the connection elements.2. A pump in accordance ...

Axially split pump

An axially split pump for conveying a fluid includes an axially split housing with a bottom part and a cover. The bottom part has a first sealing surface and the cover has a second sealing surface. The bottom part and the cover are fastened to one another so that the two sealing surfaces are in direct contact with one another. At least one first sealing groove for the reception of a first sealing element is disposed in the sealing surfaces. A second sealing groove is disposed for the reception of a second sealing element. The first sealing groove and the second sealing groove are connected to one another through a connection region and an elastic pre-loading element is disposed in the connection region, which exerts a pre-load onto one of the two sealing elements.

AXIALLY SPLIT PUMP

An axially split pump for a fluid includes an axially split housing with a bottom and a cover, a rotatable shaft, and a side cover. The side cover has a first surface for cooperating with a second surface. The second surface extends over the bottom and the cover. The bottom has a first sealing surface and the cover has a second sealing surface. The bottom and the cover can be fastened so that the sealing surfaces are in direct contact. One sealing groove is in one of the sealing surfaces for the reception of a string-like sealing element, the sealing groove extending up to the second surface. A recess surrounding the shaft is in the second surface and a projection surrounding the shaft is in the first surface. The recess and the projection are arranged so that they form a ring-like groove for the reception of a ring-like sealing element. 1. An axially split pump for conveying a fluid , comprising:an axially split housing including a bottom part and a cover;a rotatable shaft determining an axial direction; andat least one side cover configured to close the housing in the axial direction,the at least one side cover having a first contact surface configured to cooperate with a second contact surface disposed at the housing, the second contact surface extending both over the bottom part and the cover, the bottom part having a first sealing surface and the cover having a second sealing surface, the bottom part and the cover being configured to be fastened to one another so that the first and second sealing surfaces are in direct contact with one another, at least one sealing groove is disposed in one of the first and second sealing surfaces for the reception of a string-like sealing element, the sealing groove extending up to the second contact surface of the housing,a recess surrounding the shaft being disposed in the second contact surface and a projection surrounding the shaft being disposed in the first contact surface of the side cover, the recess and the projection ...

Motor and pump parts

A separator for reducing or eliminating the amount of suspending solids from a reservoir fluid of a downhole motor having a rotating seal. The cleaned fluid circulated past the seal and outermost bearing, the separator having a vortex, rotating cyclone or centrifuge, at least one inlet at least one outlet for cleaned fluid, at least one outlet for solid material, water, particulates or similar material separated from the cleaned fluid. The outlet for the clean fluid may include a porous filter.

PUMP FOR A FLUID

A pump includes first and second impellers and a sealing element. The sealing element is arranged between the first and second impellers around the drive shaft. The sealing element has a first end transvers to the drive shaft and facing the first impeller and a second end transverse to the drive shaft facing the second impeller. The sealing element has a length along an axis smaller than the distance between the first and second impellers such that the sealing element is movable along the axis between the first and second impellers. The first and second ends of the sealing element have first and second areas transverse to the axis, the first area being larger than the second area such that the force exerted by the lower pressure generated by the first impeller is substantially equal to the force exerted by the higher pressure generated by the second impeller. 1. A pump for fluids , the pump comprising:a pump housing;a power source;a drive shaft connected to the power source and extending along an axis;a fluid inlet;a first impeller rotated by the drive shaft and comprising a first impeller inlet in fluid connection with the fluid inlet, and a first impeller outlet;a second impeller rotated by the drive and comprising a second impeller inlet in fluid connection with the first impeller outlet, and a second impeller outlet; anda sealing element stationaryly arranged in relation to the drive shaft and the first and second impellers, the sealing element being sleeve shaped and arranged between the first and second impellers around the drive shaft, the sealing element having a first end transvers to the drive shaft and facing the first impeller and a second end transverse to the drive shaft facing the second impeller, the sealing element having a length along the axis smaller than a distance between the first and second impellers such that the sealing element is movable along the axis between the first and second impellers,the first end of the sealing element having a ...

MULTISTAGE TURBOMACHINE WITH EMBEDDED ELECTRIC MOTORS

A multistage turbomachine is disclosed, comprising a casing with a fluid inlet and a fluid outlet and a plurality of stages arranged in the casing. A flow path extends from the fluid inlet to the fluid outlet through the sequentially arranged stages. Each stage is comprised of a rotating impeller and an electric motor embedded in the casing and arranged for rotating the impeller at a controlled rotary speed. Each electric motor comprises a motor rotor, arranged on the impeller and integrally rotating therewith, and a motor stator stationarily arranged in the casing. Pairs of sequentially arranged impellers are configured for rotation in opposite directions. 1. A multistage turbomachine , comprising:a casing with a fluid inlet and a fluid outlet; and a flow path extends from the fluid inlet to the fluid outlet through the sequentially arranged stages;', 'each stage is comprised of a rotating impeller and an electric motor embedded in the casing and arranged for rotating the impeller at a controlled rotary speed;', 'each electric motor comprises a motor rotor arranged on the impeller and integrally rotating therewith and a motor stator stationarily arranged in the casing;', 'pairs of sequentially arranged impellers are configured for rotation in opposite directions; and', 'a control arrangement is provided, which is configured and arranged to rotate each impeller at a rotational speed which can vary from one impeller to the other., 'a plurality of stages sequentially arranged in the casing; wherein2. The turbomachine of claim 1 , wherein the impellers rotating in opposite directions are arranged directly adjacent to one another.3. The turbomachine of claim 1 , wherein the control arrangement is configured for controlling at least one parameter of the electric motors as a function of at least one compressibility-related parameter.4. The turbomachine of claim 3 , wherein the at least one parameter of the electric motors is selected from the group consisting of: the ...

MULTISTAGE PUMP

The invention relates to a multistage pump (), including a pump body (), at a lower end of which a base element () is arranged, and at an upper end of which a head element () is arranged. At least the base element () is made from sheet steel and has an inlet port () and an outlet port (). The inlet port () and the outlet port () are mechanically connected to each other by a pipe () running through the base element (). 1. A multistage pump , comprising:a base element;a head element;a pump body with a lower end and an upper end, the base element being arranged at the lower end and the head element being arranged at the upper end, wherein at least the base element is made from sheet steel and has an inlet port and an outlet port; andan elongate carrier running through the base element, the inlet port and the outlet port being mechanically connected to each other by the elongate carrier, wherein the elongate carrier is a pipe.2. A multistage pump according to claim 1 , wherein a suction connecting piece is fitted at a first end of the pipe located at the inlet port claim 1 , and a pressure connecting piece is fitted at a second end of the pipe located at the outlet port.3. A multistage pump according to claim 1 , wherein the base element comprises a base cup which forms a cylindrical outer circumferential wall of the base element.4. A multistage pump according to claim 3 , wherein the suction connecting piece and the pressure connecting piece are respectively connected fixedly by welding to the pipe.5. A multistage pump according to claim 3 , wherein the pipe is connected fixedly claim 3 , by expanding and/or welding claim 3 , to the base cup.6. A multistage pump according to claim 3 , wherein the pipe is connected fixedly claim 3 , by expanding and/or welding claim 3 , to the base cup.7. A multistage pump according to claim 1 , further comprising an inner pipe for separating fluid entering the pump at the inlet port having a first pressure and fluid being discharged ...

Slotted Washer Pad for Stage Impellers of Submersible Centrifugal Well Pump

A submersible pump assembly includes a centrifugal pump driven by a motor. The pump has a number of stages, each of the stages having a diffuser and an impeller. An upthrust washer is located between a diffuser upthrust surface and an impeller upthrust surface. Balance holes extend from an inlet on an upper side of the impeller to an outlet within one of the impeller passages. The upthrust washer overlies the inlets while the impeller is in the upthrust position. Slots are located at an interface between the upthrust washer and the impeller upthrust surface. Each of the slots registers with the inlet of one of the balance holes to allow fluid flow into the inlets of the balance holes while the impeller is in the upthrust position. 1. A submersible pump assembly , comprising:a centrifugal pump having a drive shaft extending along a longitudinal axis;a motor operatively coupled to the pump for rotating the drive shaft;the pump having a plurality of stages, each of the stages comprising:an impeller mounted to the drive shaft for rotation therewith and free to move axially relative to the shaft between downthrust and upthrust positions;a diffuser having a downward facing thrust surface;the impeller having a plurality of vanes, defining impeller passages extending upward and outward from a lower side of the impeller;an upward facing thrust surface on an upper side of the impeller positioned below the downward facing thrust surface of the diffuser;a plurality of balance holes in the impeller, each extending from the upper side of the impeller into one of the impeller passages;a thrust washer located between the upward facing thrust surface and the downward facing thrust surface, the thrust washer overlying the balance holes and being in engagement with both the upward facing thrust surfaces and the downward facing thrust surfaces while the impeller is in the upthrust position to transfer upthrust from the impeller to the diffuser; andat least one communication path at an ...

GAS RESISTANT IMPELLER HAVING LOWER UPTHRUST FOR USE WITH A CENTRIFUGAL PUMP

An impeller for pumping fluid that comprises discharge flow paths that allow high pressure liquid to be used to flush out low pressure gas that can accumulate within the internal structure of the impeller. The impeller comprises transition regions, vanes, and at least one discharge flow path. The vanes are rotational about a central axis. The transition regions and the plurality of vanes have a high pressure flow path and a low pressure flow path. The at least one discharge flow path is in fluid communication with a section of the low pressure flow path of at least one of the transition region(s) and the vane(s). 1. An impeller used for pumping fluid , the impeller comprising:at least one transition region for receiving fluid from an axial flow path;a plurality of vanes rotational about a central axis and configured to radially diffuse fluid from the axial flow path;wherein the at least one transition region and the plurality of vanes have a high pressure flow path and a low pressure flow path; andat least one discharge flow path in fluid communication with a section of the low pressure flow path of at least one of the at least one transition region and at least one vane of the plurality of vanes.2. The impeller of claim 1 , wherein the discharge flow path comprises a bore at least one of formed and created in a shroud of the impeller.3. The impeller of claim 1 , wherein the fluid communication path is created to reduce at least one of a gas pocket and an up thrust.4. The impeller of claim 1 , wherein the impeller is rotational about a central axis within a stationary diffuser and the impeller and the stationary diffuser comprise an internal diameter between the plurality of vanes and an internal wall of the stationary diffuser.5. The impeller of claim 4 , wherein fluid segregates into a liquid and gas in response to a rotational force applied to the impeller and a discharge liquid exiting the plurality of vanes is fluidly coupled with the discharge flow path.6. The ...

Integrated motor and fluid pump

An electric pump powered by an electric motor having a stator disposed within a hollow rotor is provided. Impellers on the rotor outer surface extend into a fluid flow path defined by the pump. One or more torque-producing rotor sections are driven by a plurality of independently controllable stator sections disposed within the rotor cavity. The relative positions of the rotor and stator are maintained by a plurality of bearings configured to allow rotation of the rotor and defining a bearing span. The pump is configured such that the stator and rotor share the same bearing span. Such an arrangement reduces motor windage losses relative to conventional motors in which the rotor is disposed within the stator, owing to a reduction in the diameter of the air gap between the stator and the rotor. In addition, the peripheral speed of the pump is increased owing to an increase in the rotor diameter.