СИСТЕМА ДИФФУЗИИ ВОЗДУХА ДЛЯ ПРОМЫШЛЕННЫХ НАСОСОВ

Устройство для диффузии воздуха предназначено для использования в центробежном насосе. Насос содержит корпус с находящейся в нем нагнетательной камерой, рабочее колесо, установленное внутри нагнетательной камеры, причем рабочее колесо имеет переднюю и заднюю стороны. Система для диффузии воздуха содержит один или более проходов, идущих через рабочее колесо от передней стороны к задней стороне, при этом проход или каждый проход имеет первое отверстие с задней стороны и второе отверстие с передней стороны рабочего колеса. Устройство для диффузии воздуха содержит корпус, имеющий сторону, находящуюся у уплотнения, и сторону, находящуюся у рабочего колеса, и, по меньшей мере, один канал, проходящий со стороны, находящейся у уплотнения, к стороне, находящейся у рабочего колеса. Канал или каждый канал имеет впускное отверстие со стороны, находящейся у уплотнения, выпускное отверстие со стороны, находящейся у рабочего колеса, и донную стенку, проходящую через корпус. Донная стенка имеет переднюю ...

СИСТЕМА УПРАВЛЕНИЯ МНОЖЕСТВОМ НАСОСОВ

FIELD: control systems. SUBSTANCE: group of inventions relates to a control system for a plurality of pumps, in particular a plurality of variable speed rotary pump centrifugal submersible pumps. Control system (5) comprises control module (7), processing module (9), communication interface (11) and storage module (13). Module (7) is configured to start configuration cycle of zero flow rate by increasing speed of at least one pump in addition to subset j of the i pumps of multi-pump system 3, operating at speed ω j , until the communication interface receives a signal change indicating that at least one pump has started to affect the total flow rate, or starting the zero flow rate configuration cycle by reducing the speed of at least one subset j of the i pumps from system 3 pumps running at a rate ω j , until the communication interface receives a signal change indicating that at least one pump has stopped affecting the total flow rate. EFFECT: group of inventions provides a control system and method for determining the pump characteristic and/or power consumption at zero flow rate in the absence of information on characteristics of the pump provided by the pump manufacturer. 29 cl, 7 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 685 786 C1 (51) МПК F04D 15/00 (2006.01) F04D 13/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F04D 15/0066 (2019.02); F04D 15/0088 (2019.02); F04D 13/14 (2019.02) (21) (22) Заявка: 2018123165, 26.06.2018 (24) Дата начала отсчета срока действия патента: 26.06.2018 (72) Автор(ы): ХИЛЛЕРУП ЛЮХНЕ Каспер (DK) Дата регистрации: 23.04.2019 (56) Список документов, цитированных в отчете о поиске: US 2008/067116 A1, 20.03.2008. EP 0905596 A2, 31.03.1999. KR 20090035791 A, 13.04.2009. RU 2579424 C2, 10.04.2016. RU 2551139 C1, 20.05.2015. 14.07.2017 EP 17181341.3 (45) Опубликовано: 23.04.2019 Бюл. № 12 2 6 8 5 7 8 6 R U (54) СИСТЕМА УПРАВЛЕНИЯ МНОЖЕСТВОМ НАСОСОВ (57) Реферат: Группа ...

СИСТЕМА УПРАВЛЕНИЯ МНОЖЕСТВОМ НАСОСОВ

Настоящее изобретение обеспечивает систему (5) управления множеством насосов, в частности, множества погружных центробежных насосов с регулируемой скоростью на насосной станции для сети водоснабжения. Система (5) содержит модуль (7) управления, модуль (9) обработки, интерфейс (11) связи и модуль (13) хранения. Модуль (7) управления выполнен с возможностью запуска n разных подмножеств из i насосов многонасосной системы (3), содержащей N насосов, во время n разных конфигурационных циклов со скоростью ω, где N≥2, 2≤n≤2-1 и 1≤i≤N, причем каждый конфигурационный цикл j∈{1,…,n} связан с подмножеством j∈{1,…,n} и скоростью ω, в которой интерфейс (11) связи выполнен с возможностью приема сигналов, указывающих рабочие параметры, от каждого подмножества j во время связанного конфигурационного цикла j, в которой модуль (9) обработки выполнен с возможностью определения аппроксимированной характеристики Δp=f(q,ω) насоса на основе принимаемых сигналов для каждого подмножества j и при допущении, что i ...

Центробежный насос

FIELD: motors and pumps.SUBSTANCE: invention relates to pumping equipment. Centrifugal pump comprises a straightening device (SD) installed between the screw and impeller. SD is made with a profiled body, sleeve (S) and located between S and the inner surface of the body ten blades (B). SD body is made in the form of a confuser with an inlet groove and an outlet flange for connection, respectively, with a suction pipe and pump body. Generatrix of S outer surface in the longitudinal section consists of an arc of a circle and a straight line adjacent to it, inclined to SD longitudinal axis and forming an output conical part of S outer surface. Inner surface of SD body is formed from the entrance side by a cylindrical surface smoothly conjugated with a conical and tapered along the flow surface, smoothly coupled with the output cylindrical surface. S length is less than SD body length. B are smoothly bent in the middle part along an arc of a circle in a longitudinal section along the flow of the medium with a direction of flow at the outlet along SD longitudinal axis. B input and output edges in B longitudinal section are formed by an arc of a circle. At the entrance area, each B gradually increases its thickness and at the output section smoothly tapers towards the output edge. S input section coincides with the outlet section of the groove. B entrance edge is inclined to the vertical in the longitudinal section inside the device, in the cross section it is made at an acute angle to the radius of SD body. Longitudinal stiffeners are made on the external surface of SD body, and SD is made in the form of a single piece.EFFECT: as a result, it is possible to more effectively convert the kinetic energy of a swirling flow of a pumped liquid into increase in the pressure of the flow of the pumped liquid medium and simultaneously increase the anticavitation properties of a centrifugal pump.1 cl, 4 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 669 127 C1 (51) МПК F04D 1/04 ( ...

Центробежный насос

FIELD: motors and pumps.SUBSTANCE: invention relates to pumping equipment. Centrifugal pump comprises a straightening device (SD) installed between the screw and impeller. SD is made with a profiled body, sleeve (S) and located between S and the inner surface of the body ten blades (B). SD body is made in the form of a confuser with an inlet groove and an outlet flange for connection, respectively, with a suction pipe and pump body. Generatrix of S outer surface in the longitudinal section consists of an arc of a circle forming a convex inlet part of S outer surface and a conjugated straight line inclined to SD longitudinal axis and forming the output conical part of S outer surface. Inner surface of SD body is formed from the entrance side of a cylindrical a surface that is smoothly conjugate with a conical, and tapering along the flow surface, smoothly conjugated to the output cylindrical surface. S length is less than SD body length. B are smoothly bent in the middle part from the side of its concave and convex parts along the arc of the circumference in the longitudinal section along the flow of the medium with the direction of flow at the outlet along SD longitudinal axis. B input and output edges in B longitudinal section are formed by an arc of a circle. In the entrance area each B gradually increases its thickness and in the output section it gradually tapers in the direction to the output edge. In B longitudinal section, the radius of the arc of the circle forming the middle concave part of B profile is greater than the radius of the arc of the circle forming the middle convex part of B profile. Arc of the circle forming B input edge is conjugate to the arcs of the circle forming B concave and convex parts of by straight lines, forming different angles with SD cross-section. S input section coincides with the outlet section of the groove. B entrance edge is inclined to the vertical in the longitudinal section inside SD, and in the cross section it is made ...

A fuel boost pump assembly for an aircraft

Improvements relating to centrifugal pump impellers.

Pump apparatus

Improvements relating to centrifugal pump impellers

Improvements relating to centrifugal pump impellers

Pump apparatus

Improvements relating to centrifugal pump impellers.

Pump apparatus

Improvements relating to centrifugal pump impellers.

Improvements relating to centrifugal pump impellers

Improvements relating to centrifugal pump impellers

ZENTRIFUGAL-BLUTPUMPE MIT UNGEDECKTEM ROTOR

VERFAHREN UND REAKTIONSBEHAELTER ZUR ERZEUGUNG EINER ERHITZTEN BITUMINOESEN ZUSCHLAGSTOFF-MISCHUNG

CENTRIFUGAL BLOOD PUMP WITH UNCOVERED ROTOR

MULTI-LEVEL PUMP, IN PARTICULAR INTENDS FOR THE PROMOTION OF A POLYPHASE LIQUID.

ROTARY FLUID-FLOW MACHINE, APPLICABLE AS PUMP, COMPRESSORS, PROPELLERS, GENERATOR OR POWER TURBINE.

SCREW CENTRIFUGAL WHEEL PUMP

FINGER PUMP

PATENT FOR INVENTION Finger pump In the name of KSB S.A.S. BRIEF DESCRIPTION In this pump, the angle between the imaginary tangent plane to the lip and passing through the axis and an imaginary straight line, perpendicular to the axis and passing through the point furthest from the axis of intersection of the upper surface of a finger with the lateral leading surface of this finger, is between 110 and 1400. Figure 3 Suction Fig. 1 ...

Impeller having cylindrical vanes

The present invention relates to an impeller having cylindrical vanes, in which multiple hollow vanes are arranged into a spiral in one direction from the center of a base plate, such that the fluid introduced into a hollow housing flows into a water inlet port by means of the rotation of the impeller, and then the introduced fluid flows into inlet ports of the multiple vanes formed at the center of the base plate and is discharged through outlet ports of the multiple vanes, thereby minimizing friction between the impeller and the fluid and maximizing the head of a pump and efficiency. In addition, the impeller of the present invention is configured such that an outer surface of any one vane from among the plurality of vanes is spaced apart from an outer surface of another vane adjacent to said any one vane, so as to minimize the friction loss of the fluid flowing in a path other than the inlet ports. The base plate, the vanes, and the inlet ports are integrally formed so as to provide ...

PERCUTANEOUS BLOOD PUMP WITH MIXED FLOW OUTPUT

Fluid-powered energy conversion device

CENTRIFUGAL PUMP STRUCTURE

COMPLIANT ABRASION RESISTANT BEARINGS FOR A SUBMERSIBLE WELL PUMP

An electrical submersible pump assembly includes a centrifugal pump having impellers and diffusers. A thrust runner is coupled to a motor shaft for rotation along with the impellers. The runner receives thrust from at least one of the impellers and transfers the thrust to a bushing non rotatably mounted in one of the diffusers. The bushing has a thrust transferring end adjacent a thrust receiving shoulder in the diffuser. The bushing is axially movable in the receptacle. An annular spring located between the thrust receiving shoulder in the receptacle and the thrust transferring end of the bushing urges the bushing away from the thrust receiving shoulder.

IMPROVEMENTS RELATING TO CENTRIFUGAL PUMP IMPELLERS

A centrifugal pump impeller includes front and back shrouds and a plurality of pumping vanes therebetween, each pumping vane having a leading edge in the region of an impeller inlet and a trailing edge, the front shroud has an arcuate inner face in the region of the impeller inlet, the arcuate inner face having a radius of curvature (Rs) in the range from 0.05 to 0.16 of the outer diameter of the impeller (D2) The back shroud includes an inner main face and a nose having a curved profile with a nose apex in the region of the central axis which extends towards the front shroud, there being a curved transition region between the inner main face and the nose. Fr is the radius of curvature of the transition region and the ratio Fr/D2 is from 0.32 to 0.65. Other ratios of various dimensions of the impeller are also described.

Kreiselpumpe

CENTRIFUGAL PUMP WORKING WHEEL (VERSIONS)

CENTRIFUGAL PUMP WORKING WHEEL (VERSIONS)

CENTRIFUGAL PUMP WORKING WHEEL AND ITS COMBINATION WITH INNER INSERT (VERSIONS)

For operating parallel centrifugal pump apparatus and method

Pump or applicable sophisticated compressor also like engine

Centrifugal pump system

MULTIPHASE PUMPING DEVICE

La présente invention concerne un dispositif de pompage polyphasique comportant une pompe (110) apte à pomper un fluide de pompage, un circuit de recyclage (160) et un réservoir séparateur (115). Le réservoir séparateur est connecté à une zone en aval de la pompe et est apte à séparer une phase liquide et une phase gazeuse à partir dudit fluide de pompage. De plus, le circuit de recyclage est connecté au réservoir séparateur et est apte à permettre l'écoulement de la phase liquide dudit réservoir séparateur vers une zone en amont de la pompe. The present invention relates to a multiphase pump device comprising a pump (110) capable of pumping a pumping fluid, a recycling circuit (160) and a separator tank (115). The separator tank is connected to an area downstream of the pump and is able to separate a liquid phase and a gas phase from said pumping fluid. In addition, the recycling circuit is connected to the separator tank and is adapted to allow the flow of the liquid phase of said separator tank to an area upstream of the pump.

Improvements with the rotary pumps and similar machines

ROTOR FOR USE IN A CENTRIFUGAL PUMP AND METHOD OF INSTALLING A ROTOR IN A CENTRIFUGAL PUMP

cabeçote de trabalho, conjunto de bobina, dispositivo de guia e equipamento para bomba

Pump för transport av ett medium i vätskeform

Low-cavitation impeller and pump

A low-cavitation impeller for a centrifugal pump is provided. The impeller provides a smooth flow path from the inducer section through to the outlet section. Continuous main blades run from a leading edge at the inlet eye to a trailing edge at the impeller outlet, and continuous secondary blades run from a leading edge in the transition region to a trailing edge at the impeller outlet.

Fluid-powered energy conversion device

A fluid-powered energy conversion device converts energy in a moving fluid into mechanical energy. A rigid cylindrical frame of toroidal baffles forms an upstream annular chamber and a downstream annular chamber, each of the chambers having open sides to allow entry of the fluid. The toroidal baffles create an upstream drive vortex in an upstream central vortex chamber, and a downstream extraction vortex rotating in the opposite direction in a downstream central vortex chamber. A plurality of hinged louvers surround the vortex chambers and allow the fluid to enter each chamber only in the direction of vortex rotation, and prevent the fluid from exiting through the sides of the device. The drive vortex passes through and rotates a turbine in a central aperture between the chambers. The turbine is rotated by rotational momentum of the drive vortex, lift from each turbine blade, and additional momentum imparted by the vortex reversal.

Rotatable pump for cooling systems of automobiles

НАСОС ЦЕНТРОБЕЖНЫЙ

Изобретение относится к центробежным насосам, а также к насосам, приспособленным для перекачки особых текучих сред. Технический результат - повышение надежности насоса. Насос содержит корпус, заднюю стенку, переднюю стенку, кольцо корпуса, размещенного между задней и передней стенкой, крышки корпуса, рабочее колесо. Передняя стенка соединена с рабочим колесом торцевым уплотнением, при этом рабочее колесо содержит корпус, крышку, кольцо, лопасти, ступицу, кольцо-улитку, рабочий объем, ограниченный передней стенкой корпуса, внутренним радиусом кольца-улитки и крышкой корпуса, патрубок подвода суспензии, патрубок отвода суспензии, характеризующийся тем, что передняя стенка корпуса содержит сквозное отверстие, кольцо корпуса выполнено цилиндрической формы, внутри кольца корпуса размещено кольцо упора крышки, кольцо упора крышки разделяет внутренний объем кольца корпуса на камеру воздушного охлаждения торцевого уплотнения и камеру водного охлаждения торцевого уплотнения. На внешней стороне кольца ...

Центробежный насос

FIELD: motors and pumps.SUBSTANCE: invention relates to pumping equipment. Centrifugal pump comprises a straightening device (SD) installed between the screw and impeller. SD is made with a profiled body, sleeve (S) and located between the S and the inner surface of the body with nine blades (B). SD body is made in the form of a confuser with an inlet groove and an outlet flange for connection, respectively, with a suction pipe and pump body. Generatrix of the outer surface of S in the longitudinal section consists of an arc of a circle forming a convex inlet part of the outer surface of S and a conjugated straight line inclined to the longitudinal axis of SD and forming the output conical part of the outer surface of S. Inner surface of the body of SD is formed from the entrance side of a cylindrical surface smoothly conjugate with a conical and tapering along the flow surface, smoothly conjugated to the output cylindrical surface. S length is less than SD body length. B are smoothly curved along the arc of a circle in the longitudinal section along the flow of the medium with a direction of flow at the outlet along the longitudinal axis of SD. B input and output edges in B longitudinal section are formed by an arc of a circle. At the entrance area, each B gradually increases its thickness and at the output section smoothly tapers towards the output edge. S input section coincides with the outlet section of the groove. B entrance edge is inclined to the vertical in the longitudinal section inside SD, and in the cross section it is made at an acute angle to the radius of SD body. Longitudinal stiffeners are provided on the outer surface of SD body. SD is made in the form of a single part.EFFECT: as a result, it is possible to more effectively convert the kinetic energy of a swirling flow of a pumped fluid into increase in the pressure of the flow of the pumped liquid medium and simultaneously increase the anticavitation properties of a centrifugal pump.1 cl, 4 dwg ...

РОТАЦИОННАЯ МАШИНА С НЕПРИНУДИТЕЛЬНЫМ ВЫТЕСНЕНИЕМ, ИСПОЛЬЗУЕМА В КАЧЕСТВЕ НАСОСА, КОМПРЕССОРА, ДВИЖИТЕЛЯ ИЛИ ПРИВОДНОЙ ТУРБИНЫ

FIELD: mechanical engineering. SUBSTANCE: rotor has helical paddles. Helix is formed around the axis of the rotor. Annular casing embraces the rotor at the outside. The blade is twisted in the form of a spiral. The blades are secured to outer edge of a common rotor. The diameter of the rotor progressively increases axially from inlet to outlet. The paddles and blades converge at one point located at the axis of rotation. Peripheral edges of the paddles are sharpened. The blades overlap inlet part of the paddles. EFFECT: enhanced efficiency and reliability of the machine. 9 cl, 15 dwg Сс99сгоОс ПЧ Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ” 2 013 662 ' 13) Сл Е 040 1/00 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 4831313/29, 20.09.1990 (30) Приоритет: ЕК/24.03.88/8803890 (30) Приоритет: 24.03.1988 ЕК 88 8803890 (46) Дата публикации: 30.05.1994 (71) Заявитель: Пьер Каррузэ[ЕК] (72) Изобретатель: Пьер Каррузэ[ЕК] (73) Патентообладатель: Пьер Каррузэ[ЕК] (54) РОТАЦИОННАЯ МАШИНА С НЕПРИНУДИТЕЛЬНЫМ ВЫТЕСНЕНИЕМ, ИСПОЛЬЗУЕМА В КАЧЕСТВЕ НАСОСА, КОМПРЕССОРА, ДВИЖИТЕЛЯ ИЛИ ПРИВОДНОЙ ТУРБИНЫ (57) Реферат: Сущность изобретения: ротор имеет лопатки спиралеобразной формы. Спираль образована вокруг оси ротора. Кольцевой кожух окружает ротор с внешней стороны. Лопасть закручена в виде спирали. Лопасти закреплены по внешней кромке лопаток с образованием единого ротора. Диаметр ротора выполнен увеличивающимся вдоль оси от входа к выходу. Лопатки и лопасти сходятся в одной точке, расположенной на оси вращения. Периферийные кромки лопаток заострены. Лопасти перекрывают только входную часть лопаток. 8 з. п. ф-лы, 15 ил. 2013662 С1 КО Сс99сгоОс ПЧ Го КУЗЗАМ АСЕМСУ ГОК РАТЕМТ$ АМО ТКАОЕМАКК$ (19) ВИ” 2 013 662 ' 13) СЛ 51711 ° 04 1/00 12) АВЗТКАСТ ОЕ 1МУЕМТОМ (21), (22) АррИсаНоп: 4831313/29, 20.09.1990 (30) Рпошу: ЕК/24.03.88/8803890 (30) Рпогйу: 24.03.1988 ЕВ 88 8803890 (46) Рае оГ риБбИсаНоп: 30.05.1994 (71) АррИсапе: Р'ЕК ...

Центробежный насос

FIELD: motors and pumps. SUBSTANCE: invention relates to pumping equipment. Centrifugal pump comprises a straightening device (SD) installed between the screw and impeller. SD is made with a profiled body, sleeve (S) and located between the S and the inner surface of the body with nine blades (B). SD body is made in the form of a confuser with an inlet groove and an outlet flange for connection, respectively, with a suction pipe and pump body. Inner surface of SD body is formed from the entrance side by a cylindrical surface, smoothly conjugated to a conical surface, and tapered along the flow surface, smoothly conjugated to the output smoothly expanding along the flow surface. In the longitudinal section, the S outer surface is formed by the input cylindrical surface, smoothly conjugated to a conical surface tapered to the exit from the SD, conjugated to a smoothly tapering concave surface. Inner surface of the SD body is formed from the entrance side by a cylindrical surface, smoothly conjugated to a surface that is conically tapered to the exit from the straightening device, smoothly coupled to the output cylindrical surface. S length is less than SD body length. Blades along the SD axis are smoothly curved from the side of their concave and convex parts along the arc of the circle along the flow of the medium with the direction of the flow at the inlet at an acute angle, and at the exit – at an acute angle to the SD cross section. Input and output edges of the blades in the longitudinal section of the blade are formed by an arc of a circle. At the inlet, each blade gradually increases its thickness in the direction towards the middle part, and at the output segment it gradually tapers towards the output edge. S input section coincides with the outlet section of the groove. Inlet edge of the blades lies in the plane of the exit section of the groove, located perpendicular to the longitudinal axis of the SD, and the outlet one is inclined to the vertical in the ...

ЛОПАСТНОЙ НАСОС

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2016 148 828 A (51) МПК F04D 13/12 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2016148828, 12.12.2016 Приоритет(ы): (22) Дата подачи заявки: 12.12.2016 (43) Дата публикации заявки: 14.06.2018 Бюл. № 17 (72) Автор(ы): Позняк Михаил Иванович (RU), Каширин Анатолий Иванович (RU), Веселова Наталья Николаевна (RU) A 2 0 1 6 1 4 8 8 2 8 R U где Dн - наружный диаметр ступени, βлн - угол установки лопастей на входе на периферии. Стр.: 1 A (57) Формула изобретения Лопастной насос, содержащий корпус с коническим участком, установленное в последнем осевое рабочее колесо с втулкой и расположенными на ней лопатками, наружный диаметр которых монотонно уменьшается по ходу рабочей среды, отличающийся тем, что диаметр втулки рабочего колеса монотонно увеличивается по ходу рабочей среды, а насос снабжен предвключенной осевой ступенью с лопастями, наружный и внутренний диаметры которой постоянны, причем первый из них равен наружному диаметру рабочего колеса, второй - диаметру втулки на входе в рабочее колесо, а длину предвключенной осевой ступени определяют из соотношения: 2 0 1 6 1 4 8 8 2 8 (54) ЛОПАСТНОЙ НАСОС R U Адрес для переписки: 141070, Московская обл., г. Королев, ул. Богомолова, 12, "Конструкторское бюро химического машиностроения имени А.М. Исаева"-филиал Федерального государственного унитарного предприятия "Государственный космический научно-производственный центр имени М.В. Хруничева" (71) Заявитель(и): Федеральное государственное унитарное предприятие "Государственный космический научно-производственный центр имени М.В. Хруничева" (RU)

Kühlmittelpumpe

Kühlmittelpumpe in der Bauform einer mechanisch von einer Riemenscheibe (1), einem Zahnrad, einer Steckwelle o. ä. angetriebene Kühlmittelpumpe für Verbrennungsmotore mit einem Pumpengehäuse (2) mit einer Strömungseintrittsöffnung (3) und einer Strömungsaustrittsöffnung (4), einer im/am Pumpengehäuse (2) mittels eines Pumpenlagers (5) drehbar gelagerten, mit einer Riemenscheibe (1) drehfest verbundenen Pumpenwelle (6), einer antriebseitig neben der Strömungseintrittsöffnung (3) in einem Dichtungssitz (7) im Pumpengehäuse (2) zwischen diesem und der Pumpenwelle (6) angeordneten Pumpenwellendichtung (8), mit einem drehfest im Pumpengehäuse (2) angeordneten Leitrad (9) mit Leitschaufeln (10), in dem sich eine Lageraufnahme (11) befindet, in der ein Gleitlager (12) angeordnet ist, in welchem die Pumpenwelle (6) mit ihrem der Antriebsseite, beispielsweise der Riemenscheibe (1), gegenüberliegenden Pumpenwellende gelagert ist, wobei drehfest auf der Pumpenwelle (6), dem Leitrad (9) mit dem Gleitlager ...

Kreiselpumpe

Kreiselpumpenlaufrad

Die Erfindung betrifft ein Kreiselpumpenlaufrad (1) mit Pumpenflügeln (2) aus einem spritzgusstechnisch verarbeitbarem Kunststoffmaterial, für eine elektromotorische Kreiselpumpe, bestehend aus einem ein Lager (10) umfassenden Grundkörper (3), an welchem einerseits ein permanentmagnetischer Rotor (4) und andererseits eine Deckscheibe (5) anschließt, welche an den Grundkörper (3) montiert ist. Aufgabe der Erfindung ist es bei einem Kreiselpumpenrotor der eingangs genannten Gattung dafür zu Sorge zu tragen, dass er einfach aufgebaut ist, einen erhöhten Wirkungsgrad aufweist und wirtschaftlich herstellbar ist. Diese Aufgabe wird erfindungsgemäß durch das Kennzeichen des Anspruchs 1 gelöst.

EINSTUFIGE AXIALBLUTPUMPE.

Motorbetriebener Kompressor

Ein motorbetriebener Kompressor hat einen elektrischen Motor, ein Gehäuse, das einen rohrförmigen Lagerhalter hat, und Kunststoffbauteile. Jedes der Kunststoffbauteile hat einen Verbindungsdurchgang. Der elektrische Motor hat einen Stator, der einen Statorkern und Spulen hat. Die Spulen haben ein Spulenende. Der Verbindungsdurchgang hat entgegengesetzte Enden in der Axialrichtung, wobei jedes der entgegengesetzten Enden eine Öffnung hat, sodass zwei Räume, die durch den Statorkern in dem Gehäuse definiert sind, durch den Verbindungsdurchgang miteinander verbunden sind. Der Lagerhalter ist wenigstens teilweise gegenüberliegend zu einer der Öffnungen des Verbindungsdurchgangs und an einer inneren Seite des Spulenendes in der Radialrichtung angeordnet.

Pump assembly with tortuous flow path

Technique for producing a high gas-to-liquid ratio fluid

Compressor and production pumps for pumping high gas to liquid ratio fluids

A system (10) for producing wellbore fluids which have a high gas to liquid ratio includes a compressor pump (20) such as a helico-axial pump connected in-series up stream of a production pump (12), such as a centrifugal pump. In use, the compressor pump (20) compresses the gas in the fluid before it passes in to the production pump (12), which enables it to pump more efficiently. The helico-axial pump (20, fig 3) includes a number of stages (74, fig 3), each with an associated diffuser, (82, fig 3) in the form of a helical impeller (76, fig 3). The bearing structure (89, fig 5) for the helico-axial pump (20, fig 3) may formed of ceramic material such as silicon carbide or zirconia. The downhole motor (12) which drives the system may be protected by a motor protector (16).

UMWALZPUMPE

PROCEDURE AND REAKTIONSBEHAELTER FOR THE PRODUCTION OF A BITUMINOUS ONE HEATED UP AGGREGATE MIXTURE

UMWALZPUMPE

CELL FOR PUMPING POLYPHASIC EFFLUENT AND PUMP COMPRISING AT LEAST ONE OF SAID CELLS

Cette cellule de pompage d'un effluent polyphasique est caractérisée par le fait qu'elle comporte deux parties rotatives (4-5), la première (4) étant constituée d'une roue hydraulique configurée pour transmettre l'énergie cinétique à chacune des phases de l'effluent polyphasique entrant dans la cellule (1a-1b), et la seconde (5), faisant suite à la première, étant constituée d'un dispositif de transformation énergétique configuré pour assurer l'homogénéisation des phases, le transfert de l'énergie cinétique entre les phases, l'entraînement de la phase la plus légère, la transformation de l'énergie cinétique en pression et la compression de l'effluent homogène avant la sortie de ladite cellule, l'ensemble des parties rotatives de ladite cellule étant monté sur un même arbre (3) disposé axialement à l'intérieur d'un carter fixe (2) qui comporte une entrée et une sortie de l'effluent polyphasique.

FINGER PUMP

Dans cette pompe,l'angle entre le plan imaginaire tangent au bec et passant par l'axe et une droite imaginaire, perpendiculaire à l'axe et passant par le point, le plus éloigné de l'axe de l'intersection de la surface supérieure d'un doigt avec la surface latérale d'attaque de ce doigt, est compris entre 110 et 140°.

PUMPING UNIT

CENTRIFUGAL PUMP IMPELLER AND ITS COMBINATION WITH INNER LINER (EMBODIMENTS)

CENTRIFUGAL PUMP IMPELLER (VERSIONS)

CENTRIFUGAL PUMP WORKING WHEEL AND ITS COMBINATION WITH INNER INSERT (VERSIONS)

CENTRIFUGAL PUMP WORKING WHEEL AND ITS COMBINATION WITH INNER INSERT (VERSIONS)

MULTIPHASE PUMPING DEVICE

La présente invention concerne un dispositif de pompage polyphasique comportant une pompe (110) apte à pomper un fluide de pompage, un circuit de recyclage (160) et un réservoir séparateur (115). Le réservoir séparateur est connecté à une zone en aval de la pompe et est apte à séparer une phase liquide et une phase gazeuse à partir dudit fluide de pompage. De plus, le circuit de recyclage est connecté au réservoir séparateur et est apte à permettre l'écoulement de la phase liquide dudit réservoir séparateur vers une zone en amont de la pompe. The present invention relates to a multiphase pump device comprising a pump (110) capable of pumping a pumping fluid, a recycling circuit (160) and a separator tank (115). The separator tank is connected to an area downstream of the pump and is able to separate a liquid phase and a gas phase from said pumping fluid. In addition, the recycling circuit is connected to the separator tank and is adapted to allow the flow of the liquid phase of said separator tank to an area upstream of the pump.

PUMP IMPELLER DRIVE SYSTEM

Pump for multiphase fluids such as those in the oil industry

The multiphase pump cell has two rotating parts, the first (4) of which comprises a hydraulic rotor to transmit kinetic energy to the effluent and the second (5) to ensure homogenization and compression of the phases. Both parts are mounted on the same shaft (3) placed axially through a fixed casing (2) which has an inlet and an outlet for the multiphase effluent The hydraulic wheel has a hub (6) mounted on the axle and blades (7) with a hydrodynamic profile to transfer kinetic energy to the effluent. The blades form channels between the casing and the hub with sufficient length to achieve the necessary energy transfer. The homogenization part contains at least one continuous or discontinuous helix (10) carried by a hub (9) mounted on the axle and which turns in a homogenization chamber (11) bounded by the casing and with a section orthogonal to the greatest axis of the sum of sections orthogonal to the axes of the channels in the hydraulic wheel. The developed length of the helices is sufficiently great to ensure effective homogenization and kinetic energy transfer with a view to recover pressure. Each helix extends over an angle of at least 270 dig., or a complete circuit and there are two or three helices, evenly spaced on the axle and rotated relative to each other by 180 or 120 dig. respectively. The angle of incline of each helix relativel to a plane perpendicular to the axle in the direction of the outlet is of the order of 10 dig., and can increase near the outlet to 20 dig. The hydraulic wheel has a constant or variable diameter and the ratio between the external diameter of the wheel at its outlet (Ds) and at its inlet (De) is between 1 and 3. There are between 4 and 10 identical channels in the hydraulic wheel, with their length equal to k x (De +Ds)/2 where k is between 0.5 and 1.5. The pump includes a static or dynamic device for guiding the effluent to ensure a good mixture and continuity of flow throughout the chamber. This device is a grille with a ...

Un rotor para ser utilizado en una bomba centrífuga, la bomba incluye una cubierta que contiene una cámara, una entrada para entregar a la cámara el material a ser bombeado (divisional de la solicitud 201200663).

Un rotor (40) para ser utilizado en una bomba centrífuga (10), la bomba (10) incluye una cubierta (12) que contiene una cámara (20), una entrada para entregar a la cámara el material a ser bombeado, y una salida para descargar el material desde la cámara, y el rotor está montado dentro de la cámara para su rotación, cuando esté en uso, alrededor de un eje de rotación; además, el rotor comprende un casquillo delantero (50) y un casquillo posterior (51), cada uno de los cuales posee una cara principal interna en un plano sustancialmente en ángulo recto al eje de rotación, y una pluralidad de álabes (42) de bombeo entre las mismas, y cada álabe tiene un borde de entrada en la zona de la entrada del rotor y un borde de salida, en donde el casquillo delantero tiene una cara interna curva en la zona de la entrada del rotor, la cara interna curva tiene un perfil que se define por los polinomios: yn = -0,8710521204xn5 + 7,8018806610xn4 - 27,9106218350xn3 +50,0122747105xn2 - 45,1312740213xn + 16,9014790579 ...

IMPELLING APPARATUS

This invention relates to an impelling device having a suction casing (20) having an axially located intake port (27), and providing a conically shaped suction cavity (23), and an impeller (10) located within the conically shaped suction cavity having a conically shaped impeller hub (12) and a plurality of vanes (13) extending radially outward from the outer surface of the impeller hub. The impelling apparatus may further include a discharge casing (22) providing a conically shaped discharge cavity (25) in which is mounted a conically shaped discharge hub (24).

Amperometric Sensor System

A sensor system that measures at least one parameter of water includes an electronics subsystem and includes a sensor housing electrically and mechanically coupled to the electronics subsystem. The sensor housing encloses a chamber that receives water via at least one inlet and that releases water via at least one outlet. At least one sensor has at least one electrode exposed to water in the chamber. A flow generator causes water to flow through the chamber. A plurality of objects within the chamber move in response to the water flow and abrasively clean the at least one electrode. Preferably, the sensor system includes a chlorine sensor having at least two electrodes. The electronics subsystem applies a first differential voltage between the two electrodes during a measurement interval and then applies a second differential voltage between the two electrodes during an interval following the measurement interval. 1. A method of operating an amperometric sensor having a plurality of electrodes , each electrode having a surface exposable to water having at least one parameter to be measured by the plurality of electrodes , the method comprising:positioning a sensor housing through an opening into a source of the water having the at least one parameter to be measured to immerse an outer surface of the sensor housing in the water, the sensor housing enclosing a cavity, the sensor housing having at least one inlet opening that extends only from an outer surface of the sensor housing to the cavity to allow water to flow into the cavity from the water source, the sensor housing having at least one outlet opening that extends only from the cavity to the outer surface of the sensor housing to allow water to flow out of the cavity to the water source, the surfaces of the plurality of electrodes positioned within the cavity and exposed to water flowing into the cavity from the at least one inlet opening;operating a flow generator positioned within the cavity to draw water into ...

DOWNHOLE CHEMICAL INJECTION METHOD AND SYSTEM FOR USE IN ESP APPLICATIONS

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

Пальцевой насос

ЦЕНТРОБЕЖНЫЙ НАСОС С КОНСОЛЬНЫМ ВАЛОМ

Полезная модель относится к насосостроению, а именно к центробежным насосам с консольным валом, на котором размещена крыльчатка, предназначенная для различных жидкостей с твердыми включениями, и может быть использована для горизонтальных и вертикальных насосов. Центробежный насос с консольным валом содержит корпус, включающий соединенные с помощью шпилек с гайками корпус ходовой части 1 и проточной части 2, которая образована спиральной оболочкой 3, выполненной заодно целое с всасывающим патрубком 4, в которой смонтирована на консольной части 5 вала крыльчатка 6 закрытого типа, на покрывном диске 7 которого заодно целое с ним выполнен кольцевой козырек 8. Во всасывающем патрубке 4 выполнена кольцевая проточка 9 с диаметром D, в которой установлено износостойкое кольцо 10 с наружным диаметром D1, выполненное, например, из чугуна ИЧХ28Н2. Для крепления к всасывающему патрубку на наружной поверхности кольца 10 выполнен фланец 11, закрепленный винтами 12 (или болтами) на фланце 13 всасывающего ...

Kühlmittelpumpe

Der Erfindung liegt die Aufgabe zugrunde, eine axial durchströmte Kühlmittelpumpe für Verbrennungsmotore zu entwickeln, welche bei gegenüber dem Stand der Technik geringerem Bauraum/Einbauvolumen und gleicher, d. h. für Kühlmittelpumpen üblicher Pumpenwellendrehzahl eine deutliche Erhöhung des Pumpendruckes bei axial durchströmten Kühlmittelpumpen ermöglicht, und die sich gleichzeitig durch eine gegenüber dem Stand der Technik deutlich verbesserte, stabile Kennlinie des Kühlmittelvolumenstromes über den Pumpendruck bei konstanter Drehzahl auszeichnet, zudem kavitationsunempfindlich ist, Verwirbelungen des Fördervolumenstromes vermeidet, gleichzeitig einen sehr hohen Wirkungsgrad gewährleistet, sich darüber hinaus durch eine sehr kompakte, fertigungs- und montagetechnisch einfache, kostengünstige und robuste Bauform auszeichnet und auch selbst bei mit Schmutzfracht beladenem Kühlmittel eine hohe Betriebssicherheit und Zuverlässigkeit bei sehr langer Lebensdauer gewährleistet. Die erfindungsgemäße ...

Compliant abrasion resistant bearings for a submersible well pump

A fuel boost pump assembly for an aircraft

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

Improvements in or relating to Centrifugal Pumps, Blowers and Exhausters.

... 110,617. Schneler, G. R. Nov. 1, 1916. Rotary-tube pumps; c a s i n g s ; impellerblades; starting, facilitating.-The rotor C has an interior chamber C' from which a number of channels c pass to the outer part of the rotor. The outlets of these channels are of wedge, taper, or cone shape and pass through gaps in fixed radial ribs or vanes d in the casing. In the form shown in Figs. 1 and 4, the outlets project radially and at their greatest radius fill the gaps in the vanes d. In the form shown in Fig. 5, the tubes c have tapering webs C<3> on their forward side. In the pump shown in Fig. 9, the projections are in an axial direction and the vanes d are inserted axially over the impeller. The inlet to the pump is preferably bent to form a trap a in which liquid is retained for priming the pump. When the rotor is rotated, the wedge-like portions thereof displace axially the fluid between adjacent vanes and fluid passes through the rotor passages to replace that so displaced. According to ...

Turbomachinery

Turbomachinery

A turbomachine, method of operation and an indirect-heated Brayton cycle are disclosed. The turbomachine 105 is configured to compress supercritical carbon dioxide (sC02) and comprises, in fluid flow series, an inlet 201, an inducerless radial impeller 202 having a plurality of blades, and a fully vaneless diffuser 203. The compressor 105 is characterised by a volute 204 comprising a tongue with a flow area at the tongue (throat) equal to that of the diffuser. The compressor 105 may have a flared intake 201. The radius of the inlet may be from 25 to 50 percent of the radius of the impeller. The arrangement of the scroll 204 prevents diffusion and thus avoids static pressure distortion at the exit of the diffuser which may affect the stability of the compressor.

UMWALZPUMPE

FLUID PUMP

DUAL INLET MIXED-FLOW BLOOD PUMP

PERCUTANEOUS BLOOD PUMP WITH MIXED FLOW OUTPUT

The outside diameter of an intravascular axial flow blood pump is reduced without reducing the size of its journal bearings by causing the pumped blood stream to exit through apertures in the cylindrical outside wall of the pump housing between the rotor blades and the rotor journal. This allows the journal to have a diameter of the housing, without the need for a space-consuming blood flow path around the journal.

WATERJET PROPULSOR POWERED BY AN INTEGRAL CANNED ELECTRIC MOTOR

A water jet propulsor powered by an integral canned electric motor includes a hollow housing having a hermetically sealed stator mounted therei n. The stator is electrically connected to a source of electrical energy in the vessel. An impeller assembly that includes a tubular suction shroud and impeller is rotatably mounted inside the housing. The impeller assembly includes a hermetically sealed rotor which is mounted around the suction shroud and positioned inside the stator in operative association therewith. Energizing the stator rotates the rotor, which in turn rotates the impeller to pump water from the intake end of the housing t o the outlet end of the housing and adds velocity and head to the water to be discharged from the outlet end. The discharged water creates thrust which propels the vessel.

OPEN BOWL FOR A VERTICAL TURBINE PUMP

An open bowl for a vertical turbine pump, includes a bowl body having an inner wall and an outer wall, both walls being of substantially constant optimum thickness, surrounding a vertical axis and connected by diffuser vanes which define hydraulically optimized diffuser passages through the bowl body extending from a bottom end to a top end, the diffuser vanes being radially hollow and providing open paths through the inner and outer walls to a cavity surrounded by the inner wall; a flange at the top end of the outer wall for attachment of a discharge conduit for the pumped fluid; provision on the bottom end of the outer wall for attaching to a flange of a suction bell; further provision on an inner surface at the top of the inner wall for providing sealing engagement with an upper end of a separable substantially cylindrical bearing housing; and provision at the bottom end of the inner wall for attaching to a flange of the bearing housing. The open bowl concept provides a light weight ...

OPEN BOWL FOR A VERTICAL TURBINE PUMP

An open bowl for a vertical turbine pump, includes a bowl body having an inner wall and an outer wall, both walls being of substantially constant optimum thickness, surrounding a vertical axis and connected by diffuser vanes which define hydraulically optimized diffuser passages through the bowl body extending from a bottom end to a top end, the diffuser vanes being radially hollow and providing open paths through the inner and outer walls to a cavity surrounded by the inner wall; a flange at the top end of the outer wall for attachment of a discharge conduit for the pumped fluid; provision on the bottom end of the outer wall for attaching to a flange of a suction bell; further provision on an inner surface at the top of the inner wall for providing sealing engagement with an upper end of a separable substantially cylindrical bearing housing; and provision at the bottom end of the inner wall for attaching to a flange of the bearing housing. The open bowl concept provides a light weight ...

Bladed centrifugal pump impeller - has forward-curved blades circularly contoured to form constant depth reducing width passages to periphery

Centrifugal apparatus being able to be used of pump or compressor

Rotor para bomba centrifuga que comprende una cubierta, una entrada, una salida, en que el rotor comprende un casquillos delantero, un casquillo posterior y una pluralidad de álabes, donde el casquillo delantero tiene una cara interna curva y el casquillo posterior tiene una cara principal y un talón con un perfil curvo (divisional de la sol: n° 1301-2009).

ROTOR (40) PARA SER UTILIZADO EN UNA BOMBA CENTRÍFUGA (10), EN DONDE LA BOMBA (10) INCLUYE UNA CUBIERTA (12) QUE CONTIENE UNA CÁMARA (20), UNA ENTRADA PARA ENTREGAR A LA CÁMARA (20) EL MATERIAL A SER BOMBEADO, Y UNA SALIDA PARA DESCARGAR EL MATERIAL DESDE LA CÁMARA (20), Y EL ROTOR (40) ESTÁ MONTADO DENTRO DE LA CÁMARA (20) PARA SU ROTACIÓN, CUANDO ESTÉ EN USO, ALREDEDOR DE UN EJE DE ROTACIÓN CENTRAL X-X; ADEMÁS, EL ROTOR (40) COMPRENDE UN CASQUILLO DELANTERO (50), UN CASQUILLO POSTERIOR (51), Y UNA PLURALIDAD DE ÁLABES (42) ENTRE LAS MISMAS, Y CADA ÁLABE (42) TIENE UN BORDE DE ENTRADA (43) EN LA ZONA DE LA ENTRADA DE] ROTOR (48) Y UN BORDE DE SALIDA, EN DONDE SE TIENE QUE EL CASQUILLO DELANTERO (50) POSEE UNA CARA INTERNA CURVA EN LA ZONA DE LA ENTRADA DEL ROTOR (48), LA CARA INTERNA CURVA TIENE UN RADIO DE CURVATURA (RS) QUE SE ENCUENTRA ENTRE 0,05 Y 0,16 DEL DIÁMETRO EXTERNO DEL ROTOR (D2), DICHO CASQUILLO POSTERIOR TIENE UNA CARA PRINCIPAL INTERNA Y UN TALÓN (47) QUE POSEE UN PERFIL ...

SINGLE-STAGE AXIAL FLOW BLOOD PUMP

A miniature high-speed intravascular blood pump is formed as a single stage with two rows of rotor blades (16, 18) and a single row of stator blades (26) within a tubular housing. The rotor's first row produced a mixed centrifugal and axial flow while the rotor's second row produces a purely axial flow. The blades of the second row are shaped so as to produce a uniform blood flow along the trailing edges of the blades. For this purpose, the bases of the outer trailing edges of the second row of blades have a negative propulsion angle. The pump has a purge-sealed hydrostatic bearing which is spring-loaded for minimum gap. The pump is driven by a cable (30) encased in a dual-lumen, fluid-filled cable sheath (32) formed of a coextrusion of a soft, blood-compatible outer layer (70) and a stiff abrasion-resistant inner layer (72). The cable sheath serves both as a purge fluid supply for the bearing, and as a means for flushing abraded debris away from the pump.

PUMP

The present invention refers to a pump particularly suitable for pumping blood and biological fluids, the innovative structural conception of which renders the pumping effected by flared rotors more efficient. The pump (1) comprises a housing (2) having a flared inner compartment, a base disc (9), an axial fluid inlet (3) adjacent the vertex of the inner compartment, and a tangential fluid outlet (4) at the base portion of the inner compartment. A flared rotor (5), coaxially arranged within the compartment, is driveable by an external motor and is rotatable about a support shaft (8) that is perpendicularly secured at the center of the base disc (9). According to the invention, a helical vane (6) is provided along a significant portion of the outer flared surface of the rotor (5).

VACUUM WATER PUMP

The present invention discloses a vacuum water pump wherein an impeller (14) that is divided into a suction portion (16) formed in such a manner as to be in close contact with the inner peripheral surface of a tapered cover (8) and a discharge portion (17) coupled to a main body (6) side are mounted inside a pump chamber (10), thereby having excellent vacuum suction, while exhibiting a low output resistance and having optimal discharge pressure, and a suction pipe (11a) and a discharge pipe (13a) are disposed at a higher position than the pump chamber (10), thereby always keeping the water fully filled in the pump chamber (10), without discharging to a suction opening (7) such that the water pump can conduct good pumping when it is re-activated, without any separate vacuum process.

CENTRIFUGAL COOLANT PUMP

A centrifugal coolant pump, comprising a water inlet coupling flange(), an impeller (), a volute casing (), a bearing (), a bearing housing (), a transmission shaft (), and fasteners (). The bearing () is interference installed in the bearing housing (). The transmission shaft () and the bearing () inner race are interference fitted together. The impeller () is interference installed on the transmission shaft (). The water inlet coupling flange () and the bearing housing () are separately disposed on the two sides of the volute casing () and fixedly connected via the fasteners (). The water inlet coupling () is provided with a first water inlet (A), and the volute casing () is provided with a second water inlet (B). The impeller () mates with the volute casing () to form an independent high-temperature flow path () and a low-temperature flow path (). 1123456745642615371113122398. A centrifugal cooling pump , including an intake water plate () , an impeller () , a spiral case () , a bearing () , a bearing block () , a transmission shaft () and a fastener (); the said bearing () is installed with an interference fit on the bearing block (); the transmission shaft () is matched with an interference fit with the inner ring of the bearing (); the impeller () is mounted with an interference fit on the transmission shaft (); the said intake water plate () and the bearing block () are set respectively at the two sides of the spiral case () and fixed by using the fastener (); the said intake water plate () is set with a first water inlet (A); the said spiral case () is set with a second water inlet (B); the said impeller () together with the spiral case () form independent high-temperature fluid flow channel () and low-temperature fluid flow channel ().22139168. According to the centrifugal cooling pump described in claim 1 , one side of the impeller () is set with a high-temperature blade () corresponding to the high-temperature flow channel () claim 1 , and the other side ...

CENTRIFUGAL PUMP APPARATUS

A centrifugal blood pump apparatus includes a plurality of permanent magnets () in an impeller () in a blood chamber (), a plurality of coils () in a motor chamber (), and a magnetic element () in each of the coils (). The magnetic elements () are made shorter than the coils () to lower attractive force between the magnetic elements () and the permanent magnets () in the impeller (), to set a large gap between the magnetic elements () and the permanent magnets (). As a result, axial attractive force and negative rigidity can be lowered while required torque is satisfied. 12786107618208106. A centrifugal pump apparatus including a housing () having first and second chambers ( , ) partitioned from each other by a dividing wall () , an impeller () rotatably provided in said first chamber () along said dividing wall () , for delivering fluid by centrifugal force during rotation , and a drive unit ( to ) provided in said second chamber () for driving said impeller () to rotate with said dividing wall () being interposed , comprising:{'b': 15', '10, 'a first magnetic element () provided in one surface of said impeller ();'}{'b': 16', '7', '10', '15, 'a second magnetic element () provided in an inner wall of said first chamber () facing the one surface of said impeller (), for attracting said first magnetic element (); and'}{'b': 17', '10', '10', '18', '20, 'a plurality of third magnetic elements () provided in the other surface of said impeller (), arranged in a direction of rotation of said impeller (), and attracted by said drive unit ( to ), wherein'}{'b': 18', '20, 'said drive unit ( to ) includes'}{'b': 20', '17, 'a plurality of coils () provided to face said plurality of third magnetic elements (), for generating rotating magnetic field, and'}{'b': 18', '20', '20, 'a plurality of fourth magnetic elements () provided in correspondence with said plurality of coils () respectively and each inserted in the corresponding coil (),'}{'b': 18', '20', '10, 'each said fourth ...

ROTOR MACHINE INTENDED TO FUNCTION AS A PUMP OR AN AGITATOR AND AN IMPELLER FOR SUCH A ROTOR MACHINE

The invention concerns a rotor machine and an impeller, of which the rotor machine is intended to function as a liquid pump or as an agitator in a fluid such as a liquid or a colloid, whereby the rotor machine has a pump casing () with an impeller () mounted in bearings in a manner that allows rotation around an axis (X), and in which the rotor machine has three principal flow pathways, comprising: —an axial inlet opening () with a defined area of opening (Ain) —a radially oriented outlet opening () with a defined area of opening (Aut), and —a series of radially extending blades () that, distributed around the circumference of the impeller, form between them a number of flow channels (-). In order to achieve an improved working capacity, the area of opening (Ain) of the inlet opening (), the area of opening (Aut) of the outlet opening and the total effective area of opening of the flow channels (-) that extends through the impeller are so mutually designed that the three principal passages of the rotor machine are filled and emptied of the said fluid in an essentially equal manner. 1. A rotor machine intended to function as a liquid pump or as an agitator in a fluid such as a liquid or a colloid , whereby the rotor machine has a pump casing with an impeller mounted in bearings in a manner that allows rotation around an axis (X) , and in which the rotor machine has three principal flow pathways , comprising:an axial suction inlet with a defined area of opening (Ain)a radial pressurised outlet with a defined area of opening (Aut), anda series of radially extending blades that, distributed around the circumference of the impeller, form between them a number (n) of flow channels that each has a nominal cross-sectional area (Avs) and which channels together form a total nominal area of opening (Atot-impl) through the impeller, characterised in that the area of opening (Ain) of the suction inlet, the area of opening (Aut) of the pressurised outlet and the total nominal ...

Downhole chemical injection method and system for use in esp applications

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

BLOOD PUMP WITH SEPARATE MIXED-FLOW AND AXIAL-FLOW IMPELLER STAGES AND MULTI-STAGE STATORS

A pump for a fluid which can be blood has a stator housing and a rotor hub with leading and trailing portions and an intermediate portion disposed therebetween. At least one impeller blade at the leading portion drives circumferential and axial components of a flow into a pump annulus or intermediate pathway portion. At least one stator blade extends radially inward from the stator housing within the intermediate pathway portion and is configured to reduce a circumferential component of the flow. 1. An implantable blood pump comprising:a stator housing including an inlet and an outlet and defining a fluid pathway therebetween;a rotor hub disposed within the stator housing, the rotor hub defining a diameter and a rotational axis extending from the inlet to the outlet of the stator housing; anda stator blade extending inward from the stator housing and defining a length less than the diameter of the rotor hub.2. The blood pump of claim 1 , further comprising an inlet stator blade extending inward from the stator housing within the inlet.3. The blood pump of claim 2 , wherein the rotor hub includes a body having a leading portion including a conical geometry proximate the inlet of the stator housing claim 2 , a trailing portion proximate the outlet of the stator housing claim 2 , and an intermediate portion extending between the leading portion and the trailing portion claim 2 , the intermediate portion of the rotor hub defining an intermediate portion of the fluid pathway claim 2 , and the stator blade projects within the intermediate portion of the fluid pathway.4. The blood pump of claim 3 , wherein the inlet stator blade defines the fluid pathway from the inlet to the leading portion of the body of the rotor hub claim 3 , and the inlet stator blade is configured to reduce a pre-rotation of a fluid within the inlet.5. The blood pump of claim 4 , wherein the inlet stator blade includes a distal-most portion facing the rotational axis of the rotor hub.6. The blood ...

Mechanical coolant pump

A coolant pump includes an outlet volute comprising a pivot axis, an impeller pump, a housing, and an outlet valve arrangement. The housing comprises an outlet volute housing defining the outlet volute and comprises a volute housing wall comprising a recess, and a first outlet channel comprising a valve opening. The outlet valve arrangement is disposed in the first outlet channel and comprises a valve body which opens or closes the valve opening. The valve body comprises a circle segment body comprising a proximal surface and a maximum outside radius. The circle segment body is rotated around the pivot axis. The proximal surface is distant from the pivot axis by an offset distance which is at least ¼ of the maximum outside radius. The recess houses the circle segment body in the closed valve position. A lateral distance of the pivot axis to the volute housing wall is approximately equal to the offset distance.

Multi-pump control system

A multi-pump control system includes a processing module, a communication interface, a storage module and a control module configured to ramp up a speed of k pumps in addition to a subset j of i pumps of a system comprising N pumps running at a speed ω j providing a total head Δp, wherein N≥2, 1≤k<N and 1≤i<N, and to ramp down the i pumps of the subset j from the speed ω j to a lower speed ω m that is required for a subset m of i+k pumps to provide the total head Δp, and/or configured to ramp down the speed of k pumps of the subset j of i pumps and to ramp up the i-k pumps of a residual subset r from the speed ω j to a higher speed (Or that is required to provide the total head Δp.

MULTI-PUMP CONTROL SYSTEM

A multi-pump control system includes a control module, a processing module, a communication interface, and a storage module. The control module runs n different subsets of i pumps of a multi-pump system including N pumps during n different configuration cycles at a speed ω, wherein N≥2, 2≤n≤2−1 and 1≤i≤N. Each configuration cycle j∈{1, . . . , n} is associated with a subset j∈{1, . . . , n} and a speed ω. The communication interface receives signals indicative of operational parameters from each subset j during the associated configuration cycle j. The processing module determines an approximated pump characteristic Δp=f(q, ω) based on the received signals for each subset j and under an assumption that the i pumps of each subset j share the same part q/i of a reference flow q. The storage module stores the approximated pump characteristic Δp=f(q, ω) or parameters indicative thereof. 1. A multi-pump control system comprising:a processing module;a communication interface;a storage module; and{'sub': j', 'j, 'sup': 'N', 'a control module configured to run n different subsets of i pumps of a multi-pump system comprising N pumps during n different configuration cycles at a speed ω, wherein N≥2, 2≤n≤2−1 and 1≤i≤N, wherein each configuration cycle j∈{1, . . . , n} is associated with a subset j∈{1, . . . , n} and a speed ω,'}wherein the communication interface is configured to receive signals indicative of operational parameters from each subset j during the associated configuration cycle j,{'sub': 'j', 'wherein the processing module is configured to determine an approximated pump characteristic Δp=f(q, ω) based on the received signals for each subset j and under the assumption that the i pumps of each subset j share the same part q/i of a reference flow q, and'}{'sub': 'j', 'wherein the storage module is configured to store the approximated pump characteristic Δp=f(q, ω) or parameters indicative thereof.'}2. The multi-pump control system according to claim 1 , wherein:{' ...

MULTI-PUMP CONTROL SYSTEM

A multi-pump control system includes a control module, a processing module, a communication interface, and a storage module. The control module is configured to run a zero flow configuration cycle by either ramping up the speed of at least one pump in addition to a subset j of i pumps of a multi-pump system until the communication interface receives a signal change indicative of the at least one pump starting to contribute to the total flow, wherein the processing module is configured to determine an approximated pump characteristic or power consumption or ramping down the speed of at least one pump of a subset j of i pumps of a multi-pump system until the communication interface receives a signal change indicative of the at least one pump stopping to contribute to the total flow, wherein the processing module is configured to determine an approximated pump characteristic and/or power consumption. 1. A multi-pump control system comprising:a processing module;a communication interface;a storage module; anda control module, wherein the control module is configured to:{'sub': 0', '0', '0, 'sup': 2', '3, 'run a zero flow configuration cycle by ramping up a speed of at least one pump in addition to a subset j of i pumps of the multi-pump system running at a speed w until the communication interface receives a signal change indicative of the at least one pump starting to contribute to the total flow, wherein the processing module is configured to determine an approximated pump characteristic Δp˜ωand/or power consumption P˜ω, wherein ωis the speed of the at least one ramped-up pump at a time thee at least one ramped-up pump starts to contribute to the total flow; or'}{'sub': 0', '0', '0, 'sup': 2', '3, 'run a zero flow configuration cycle by ramping down the speed of at least one pump of a subset j of i pumps of a multi-pump system running at a speed w until the communication interface receives a signal change indicative of the at least one pump stopping to contribute to ...

Pump assembly, in particular for supplying a slide ring seal assembly

The invention relates to a pump assembly, especially of a mechanical seal assembly, for supplying a fluid, especially to a mechanical seal (2a, 2b), comprising exactly one drive (11) comprising a drive shaft (24), a first axial pump (21), which conveys the fluid in the axial direction (X-X) of the drive shaft, a second axial pump (22), which conveys the fluid in the axial direction of the drive shaft, and a radial pump (23), which conveys the fluid in the radial direction (R) of the drive shaft, wherein the first axial pump (21) and the second axial pump (22) are arranged in front of the radial pump (23) in the flow-through direction (B) of the fluid across the pump assembly, and wherein the drive (11) simultaneously drives the first axial pump (21), the second axial pump (22) and the radial pump (23).

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 ...

AQUACYCLE PUMP AND METHOD OF USE

The present invention relates in general to the field of water pumps, and more specifically, to an attachment configured to connect to the rear wheel of a motorcycle or motorscooter to provide power to a water pump and a method of pumping water using the attachment. One aspect of the aquacycle pump includes a base plate and a kick-stand support bracket configured to slidably adjust so that the aquacycle pump may be compatible with different sizes of motorcycles or motorscooters. The aquacycle pump may further include a roller that is configured to abut against the rear wheel of the motorcycle or motorscooter. The aquacycle pump may further include a water pump, wherein the water pump is connected to the roller. The aquacycle pump is configured such that as the engine of the motorcycle or motorscooter is started and power is provided to rotate its rear wheel, the abutting roller of the aquacycle pump also rotates. The rotation of the roller, in turn, operates the water pump to convey water to a location where water is needed. The purpose of the invention is to provide a device and method that may utilize existing motorized vehicles prevalent in developing countries (e.g., motorcycles, motorscooters), instead of electricity or petrol generators, to provide energy to a water pump for delivering water. 1. An aquacycle pump for conveying water , comprising:a base plate;a first side wall connected to the base plate;an opposite second side wall connected to the base plate;the first side wall having a series of openings;the second side wall having a series of openings;the first and second side walls having a support bracket; a) an inner shaft;', 'b) an outer coating;', 'c) the outer coating of the roller configured to be in contact with a wheel of a vehicle;, 'a roller comprisingthe support bracket configured to support the roller;a water pump support plate connected to the base plate and/or the first or second side walls;a water pump attached to the water pump support ...

TURBOMACHINERY

A turbomachine () configured to compress supercritical carbon dioxide is shown. The turbomachine comprises, in fluid flow series, an inlet (), an inducerless radial impeller () having a plurality of blades, a fully vaneless diffuser (), and a volute () comprising a tongue and having a flow area at the tongue equal to that of the diffuser. 1. A turbomachine configured to compress supercritical carbon dioxide , the turbomachine comprising , in fluid flow series:an inlet;an inducerless radial impeller having a plurality of blades;a fully vaneless diffuser; anda volute comprising a tongue and having a flow area at the tongue equal to that of the diffuser.2. The turbomachine of claim 1 , in which the inlet is radially flared to induce a radial component in flow prior to an entry to the impeller.3. The turbomachine of claim 2 , in which a hub hade angle of the impeller at the entry thereto (γ) is from 50 to 70 degrees.4. The turbomachine of claim 3 , in which said hade angle (γ) is 60 degrees.5. The turbomachine of claim 1 , in which each of the plurality of blades is a backswept blade.6. The turbomachine of claim 5 , in which each of the plurality of blades have a blade exit angle (χ) of from −50 to −70 degrees.7. The turbomachine of claim 6 , in which each of the plurality of blades have a blade exit angle (χ) of −60 degrees.8. The turbomachine of claim 1 , in which the plurality of blades comprises:a set of main blades; anda set of splitter blades.9. The turbomachine of claim 8 , in which a meridional chord length of the splitter blades (c) is 70 percent of a meridional chord length of the main blades (c).10. The turbomachine of claim 8 , in which the impeller comprises one splitter blade for each main blade.11. The turbomachine of claim 1 , in which the radius of the inlet (r) is from 25 to 50 percent of the radius of the impeller (r).12. The turbomachine of claim 11 , in which the radius of the inlet (r) is from 30 to 50 percent of the radius of the impeller (r).13. ...

FUEL BOOST PUMP ASSEMBLY FOR AN AIRCRAFT

A fuel boost pump assembly for an aircraft includes a first inlet for receiving a first pressurized fuel flow, a second inlet, an assembly outlet, a pump for transferring fuel between the second inlet and the assembly outlet, and a hydraulic motor adapted to drive the pump. The hydraulic motor is fluidly connected between the first inlet and the assembly outlet, and is mechanically coupled to the pump. Further, in use, the hydraulic motor converts hydraulic energy of the first pressurized fuel flow into driving energy of the pump such that the pump generates a second pressurized fuel flow between the second inlet and the assembly outlet. 1. A fuel boost pump assembly for an aircraft , the assembly comprising:a first inlet for receiving a first pressurized fuel flow;a second inlet;an assembly outlet;a pump for transferring fuel between the second inlet and the assembly outlet; anda hydraulic motor adapted to drive the pump, the hydraulic motor being fluidly connected between the first inlet and the assembly outlet, and mechanically coupled to the pump,wherein, in use, the hydraulic motor converts hydraulic energy of the first pressurized fuel flow into driving energy of the pump such that the pump generates a second pressurized fuel flow between the second inlet and the assembly outlet.2. The assembly according to claim 1 , wherein the pump comprises an impeller that is mechanically coupled with the hydraulic motor via a common shaft.3. The assembly according to claim 2 , further comprising a casing having a top portion claim 2 , a middle portion comprising the hydraulic motor claim 2 , and a bottom portion comprising the impeller.4. The assembly according to claim 1 , wherein the hydraulic motor and the pump are imperviously separated using an isolation plate.5. The assembly according to claim 1 , wherein the assembly outlet is adapted such that claim 1 , in use claim 1 , an exhaust fuel flow from the hydraulic motor and the second pressurized fuel flow merge at the ...

AIR DIFFUSER SYSTEM FOR INDUSTRIAL PUMPS

An air diffuser device suitable for use in an air diffuser system for a centrifugal pump the pump including a pump casing with a pumping chamber therein, an impeller mounted within the pumping chamber for rotation about a rotation axis, the impeller including a front side and a rear side. The air diffuser system comprises one or more passages extending through the impeller from the front side to the rear side, the or each passage having a first opening at the rear side and a second opening at the front side of the impeller. The air diffuser device comprises a main body having a seal side and an impeller side, and at least one channel extending through the main body from the seal side to the impeller side, the or each channel having an intake opening at the seal side, a discharge opening at the impeller side, and a base wall extending through the main body, the base wall having a leading end portion at the seal side, and a trailing end portion at the impeller side, the discharge opening being in fluid communication with the first opening of the passage in the impeller when installed. 111-. (canceled)12. An air diffuser device suitable for use in an air diffuser system for a centrifugal pump , the pump including a pump casing with a pumping chamber therein , an impeller mounted within the pumping chamber for rotation about a rotation axis , the impeller including a front side and a rear side , the air diffuser system comprising one or more passages extending through the impeller from the front side to the rear side , the or each passage having a first opening at the rear side and a second opening at the front side of the impeller , the air diffuser device comprising a main body having a first side and a second side , and at least one channel extending through the main body from the first side to the second side , the or each channel having an in use intake opening at the first side and a discharge opening at the second side , and wherein the main body has an element ...

Seat Ventilation Device for a Seat System, in Particular of a Motor Vehicle

A seat ventilation device for a seat system, in particular of a motor vehicle, includes a plurality of radial fans for conducting air and at least one cushion which has a foam support and a ventilation layer which is arranged over or in front of the foam support and through which air conducted by the radial fans can flow. The radial fans are at least partly received in the foam support and are arranged below or behind the ventilation layer. 110.-. (canceled)11. A seat ventilation device for a seat system , comprising:a plurality of radial fans for conveying air; anda cushion which has a foam pad and a ventilation layer, wherein the ventilation layer is disposed above or in front of the foam pad and is permeatable by air conveyed by the plurality of radial fans;wherein the plurality of radial fans are at least partially disposed in the foam pad and are disposed below or behind the ventilation layer.12. The seat ventilation device according to claim 11 , wherein the plurality of radial fans are completely disposed in the foam pad with respect to an axial extension of the plurality of radial fans.13. The seat ventilation device according to claim 11 , wherein in a direction of a seat surface or a backrest surface of the seat ventilation device the plurality of radial fans are each completely covered by the ventilation layer.14. The seat ventilation device according to claim 11 , wherein each of the plurality of radial fans has at least one outlet opening through which air is flowable and via which conveyed air is conductible out of the respective radial fan.15. The seat ventilation device according to claim 14 , wherein the respective at least one outlet opening or a respective inlet opening of the plurality of radial fans is completely covered by the ventilation layer in a direction of a seat surface of the seat ventilation device.16. The seat ventilation device according to claim 14 , wherein each of the plurality of radial fans has at least one fan wheel for ...

MECHANICAL COOLANT PUMP

A mechanical coolant pump for an internal combustion engine includes a pump housing defining an outlet volute, a first outlet channel comprising a first valve opening, a second outlet channel comprising a second valve opening, an impeller pump wheel, and an outlet valve arrangement. The second outlet channel is separate from and fluidically parallel to the first outlet channel. The impeller pump wheel pumps a liquid into the outlet volute. The outlet valve arrangement is fluidically upstream of the first outlet channel and the second outlet channel. The outlet valve arrangement comprises an integral valve body which pivots between an open position and a closed position. The valve body comprises a first retaining section and a second retaining section. When the valve body is in the closed position, the first retaining section completely closes the first valve opening and the second retaining section only partially closes the second valve opening. 19-. (canceled)10. A mechanical coolant pump for an internal combustion engine , the mechanical coolant pump comprising:an outlet volute;a pump housing defining the outlet volute;a first outlet channel comprising a first valve opening;a second outlet channel comprising a second valve opening, the second outlet channel being configured to be separate from and fluidically parallel to the first outlet channel;an impeller pump wheel configured to pump an incoming liquid coolant in an axial direction radially into the outlet volute;an outlet valve arrangement disposed fluidically upstream of each of the first outlet channel and the second outlet channel, the outlet valve arrangement comprising a valve body configured to be integral and to pivot between an open position and a closed position, the valve body comprising a first retaining section and a second retaining section,wherein, when the valve body is in the closed position, the first retaining section completely closes the first valve opening and the second retaining section ...

Self-priming centrifugal pump

A pump with high performance and cleanability includes a casing having a smaller volute and a larger volute; a space between an outer circumference of an impeller and a starting end of the smaller volute being greater than that of the larger volute, generating a circulating flow of self-priming water from the smaller volute to the larger volute; and a diffusing part of the larger volute being formed into an upright, cylindrical self-priming water separating chamber guiding the self-priming water from the smaller volute to flow in for air-water separation. An inner circumference part of the casing is formed concentric with the outer circumference of the impeller with a predetermined space therebetween; defining members are protrusively disposed on the inner circumference part of the casing so as to define the shapes of the two volutes; and the self-priming water separating chamber is made attachable to and detachable from the casing.

VOLUTE FOR ENGINE-MOUNTED BOOST STAGE FUEL PUMP

A housing has walls that define a volute passage and a diffuser passage fluidly connected to the volute passage. The volute passage has a first subsection and a second subsection, each having cross-sectional areas defined by tabular data. A centrifugal pump has a rotor and a housing, the housing having walls defining a volute passage and a diffuser passage fluidly connected to the volute passage. The volute passage has a first subsection and a second subsection, each having cross-sectional areas defined by tabular data. 1. A housing comprising:walls defining a volute passage and a diffuser passage fluidly connected to the volute passage, wherein the volute passage has a first subsection having cross-sectional areas defined by Table 6 and a second subsection having cross-sectional areas defined by Table 7.2. The housing of claim 1 , wherein the walls define an exit bend fluidly connected to the diffuser passage claim 1 , and wherein the exit bend has cross-sectional areas defined by Table 8.3. The housing of claim 1 , wherein the diffuser passage has cross-sectional areas with continuously increasing area from an inlet to an outlet of the diffuser passage.4. The housing of claim 2 , wherein the housing has a first half defining a first portion of the volute and diffuser passages and a second half defining a second portion of the volute and diffuser passages claim 2 , and wherein the first and second halves mate in a facing relationship such that the first and second portions cooperate to form the volute and diffuser passages.5. The housing of claim 4 , wherein the volute passage is configured to fluidly communicate with a rotor having an outer diameter greater than or equal to 4.115 inches and less than or equal to 4.135 inches.6. A centrifugal pump comprising:a rotor; and 'walls defining a volute passage and a diffuser passage fluidly connected to the volute passage, wherein the volute passage has a first subsection having cross-sectional areas defined by Table 6 ...

Low-Cavitation Impeller and Pump

A low-cavitation impeller for a centrifugal pump is provided. The impeller provides a smooth flow path from the inducer section through to the outlet section. Continuous main blades run from a leading edge at the inlet eye to a trailing edge at the impeller outlet, and continuous secondary blades run from a leading edge in the transition region to a trailing edge at the impeller outlet.

Extracting Heat From A Compressor System

A system includes a gas compressor system and a thermal cycle. The gas compressor system includes a compressor housing defining an interior compressor chamber. A gas compressor is in the interior compressor chamber to compress gas received into interior compressor chamber. A heat exchange fluid passage is provided adjacent to a surface that contacts the gas being compressed by the gas compressor. The thermal cycle includes a working fluid heated using the heat exchange fluid passage of the compressor housing. The working fluid is expanded by the thermal cycle to generate electricity. 1. A system , comprising: a compressor housing defining an interior compressor chamber,', 'a gas compressor in the interior compressor chamber adapted to receive and compress gas,', 'a heat exchange fluid passage adjacent to a surface that contacts gas in the gas compressor;, 'a gas compressor system, comprisinga thermal cycle comprising a working fluid and a turbine coupled to an electrical generator, the turbine adapted to receive and expand the working fluid to drive the generator, and the working fluid heated using the heat exchange fluid passage of the gas compressor system.2. The system of claim 1 , where the compressor housing defines the heat exchange fluid passage adjacent to and extending substantially the length of the interior compressor chamber.3. The system of claim 1 , where the gas compressor defines the heat exchange fluid passage through a center of the gas compressor.4. The system of claim 1 , where the thermal cycle is coupled to the gas compressor to communicate the working fluid through the heat exchange fluid passage.5. The system of claim 1 , where the thermal cycle comprises a heat exchanger having a first pass in fluid communication with the turbine and a second claim 1 , separate pass in fluid communication with the heat exchange fluid passage.6. The system of claim 1 , where the thermal cycle is an Organic Rankine Cycle claim 1 , comprising an evaporator heat ...

PUMP, METHOD FOR MANUFACTURING PUMP, AND REFRIGERATION CYCLE DEVICE

Provided is a pump that includes an annular molded stator having a substrate mounted with a Hall element and that includes a rotor having an annular rotor unit rotatably housed in a cup-shaped partition component, with one end thereof in an axial direction facing the Hall element and the other end thereof in the axial direction provided with an impeller attachment unit. The rotor unit includes a resin magnet, a sleeve bearing, and a resin portion. The resin magnet includes a rotor-position detecting magnetic-pole portion protruding axially with a predetermined height in an annular shape having a predetermined width in a radial direction on an outer periphery of an end face opposite to the Hall element. The rotor-position detecting magnetic-pole portion includes a plurality of arc-shaped notches on the same circumference on an inner diameter side thereof. 110-. (canceled)11. A motor rotor comprising an annular magnet with one end thereof in an axial direction facing a magnetic-pole position detection element provided in a stator , whereinthe magnet includes a rotor-position detecting magnetic-pole portion in an annular shape and protruding axially from an end face on a side of the magnetic-pole position detection element, andthe rotor-position detecting magnetic-pole portion includes a plurality of notches on an inner diameter side thereof.12. The motor rotor according to claim 11 , whereinthe notch is provided at each center of a magnetic pole formed in the motor rotor.13. The pump according to claim 11 , whereinthe notch is provided between each of magnetic poles formed in the motor rotor.14. The motor rotor according to claim 11 , whereinthe notches are arc-shaped.15. The motor rotor according to claim 11 , whereina radial width of the rotor-position detecting magnetic-pole portion, each of which inner diameter side is notched in a sine wave shape, becomes smallest at each center of the magnetic poles formed in the motor rotor.16. The motor rotor according to ...

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.

DEVICE AND METHOD FOR OPERATING PARALLEL CENTRIFUGAL PUMPS

A device and a method for operating multiple centrifugal pumps are disclosed. The device can include a communication interface for receiving as at least one input information, an instantaneous pressure drop and an instantaneous flow rate per pump or speed of the centrifugal pumps, and for transmitting output information to the centrifugal pumps, where the output information reflects a reference value for the number of centrifugal pumps to be operated in parallel. The device can contain a data storage unit and a processing unit, which determine from input information and additional information an instantaneous efficiency, a first expected efficiency under the assumption that the actual number is reduced by one, and a second expected efficiency under the assumption that the actual number is increased by one, and which can generate the reference value depending on which of the instantaneous or first expected or second expected efficiencies has a highest value. 1. A device for operating multiple centrifugal pumps , wherein the centrifugal pumps are of a same type and size and are to be operated at a same speed , the device comprising:a communication interface (I/O) for receiving at least one input information on a state of operation of centrifugal pumps and for transmitting at least one output information to at least one driving unit of the centrifugal pumps, where the at least one output information reflects a reference value for a number of centrifugal pumps to be operated in parallel, the communication interface (I/O) being arranged to receive as input information, an instantaneous pressure drop (H_i) across and an instantaneous flow rate per pump (Q_i) or speed (n_i) of the centrifugal pumps which are to be currently operated in parallel;a data storage unit (MEM) for storing at least one additional information, as an actual number (m_a) of currently operated centrifugal pumps and a rated speed (n_r) of the centrifugal pumps; anda processing unit (PU) for generating ...

APPARATUS, SYSTEM AND METHOD FOR PUMPING GASEOUS FLUID

An apparatus, system and method for pumping gaseous fluid are described. The centrifugal pump of the invention homogenizes at least a portion of the gas and liquid contained in produced well fluid thereby improving the efficiency of the pump in electric submersible pump (ESP) applications and decreasing the downtime of the ESP system. The impeller of the invention comprises an increased inlet area. The centrifugal pump of the invention comprises a single shroud located on the bottom side of an impeller, an increased inlet area of the impeller and an increased clearance gap between the impeller and a diffuser. One or more truncated vanes extend substantially upstream from the single shroud, wherein each truncated vane sits at a mid-pitch location between untruncated vanes starting from the bottom side of the impeller. 1. A semi-open impeller for an electric submersible pump (ESP) assembly comprising:a single shroud coupled to a bottom side of an impeller, wherein a top side of the impeller is open to a diffuser;at least two untruncated vanes extending substantially upstream from the single shroud, wherein each of the at least two untruncated vanes has an untruncated vane chord length;at least two truncated vanes extending substantially upstream from the single shroud, wherein each truncated vane sits at a mid-pitch location between two of the at least two untruncated vanes starting from the bottom side of the impeller; andwherein the at least two truncated vanes extend from an outer circumference of the single shroud and each truncated vane has a truncated vane chord length between about 50% and about 75% of the untruncated vane chord length as measured from a hub of the impeller.2. The semi-open impeller of claim 1 , wherein there are three truncated vanes and three untruncated vanes.3. The semi-open impeller of claim 1 , wherein there are two truncated vanes and two untruncated vanes.4. The semi-open impeller of claim 1 , wherein there are four truncated vanes and ...

POOL PUMP WITH MULTIPLE OUTLETS

A liquid pump for use with a fluid circulation system for a body of water includes a strainer assembly; a centrifugal pump assembly having at least first and second outlet ports respectively oriented in vertical and horizontal directions; a motor; and at least one cap configured and dimensioned to engage and close an outlet port. 1. A liquid pump for use with a fluid circulation system for a body of water , comprising:a centrifugal pump assembly having at least first and second outlet ports oriented in different directions; andat least one cap configured and dimensioned to engage and close an outlet port.2. The liquid pump of wherein the centrifugal pump assembly is configured to mate with a strainer assembly on an inside side of the centrifugal pump assembly and mate with a motor on an outlet side of the centrifugal pump assembly.3. The liquid pump of wherein the first outlet and the second outlet are respectively oriented in vertical and horizontal positions.4. The liquid pump of wherein the first and second outlet ports each have infernal and external threads.5. The liquid pump of wherein the cap is adapted to screw onto the outlet port.6. The liquid pump of wherein the centrifugal pump assembly includes a casing having an inner shell and an outer shell.7. The liquid pump of wherein the Inner shell and outer shell are concentric and spaced apart from each other.8. The liquid pump of further including a housing extension adapted to cover a face of a motor.9. The liquid pump of wherein the housing extension includes a slot at a bottom of the housing extension.10. The liquid pump of wherein said liquid pump is connected to a water circulation system for a swimming pool.11. The liquid pump of wherein the centrifugal pump assembly defines a channel positioned along an interior circumference and connected to each of the outlet ports.12. A method for selecting the direction of fluid outflow from a centrifugal pump comprising: a strainer assembly,', 'a centrifugal pump ...

TURBO COMPRESSOR AND TURBO REFRIGERATOR

A turbo compressor that has a pressure equalizing tube that circulates a gas from a gear unit accommodation space toward an IGV accommodation space, and an oil separation device that is provided in the gear unit accommodation space to separate lubricating oil that is contained in the gas, in which the oil separating device has a suction duct that communicates with the pressure equalizing tube, and the suction duct has a centrifugal separation portion provided with a first demister, a second demister provided on the downstream side of the first demister in relation to the suction direction, and a curved passage provided between the first demister and the second demister. 1. A turbo compressor comprising:a compression stage that is provided with an impeller that rotates;a housing provided with a first space that in addition to housing lubricating oil houses a gear member that transmits rotating force to the impeller, and a second space in which the ambient pressure becomes lower than the first space;a pressure equalizing tube that circulates a gas from the first space toward the second space; andan oil separating device that is provided in the first space and that separates the lubricating oil contained in the gas,wherein the oil separating device has a suction passage that communicates with the pressure equalizing tube; andthe suction passage has a centrifugal separation portion that is provided with a first demister, a second demister that, in relation to the suction direction, is provided on the downstream side of the first demister, and a curved passage that is provided between the first demister and the second demister.2. The turbo compressor according to claim 1 , wherein the centrifugal separation portion claim 1 , in relation to the rotation direction of the gear member claim 1 , is provided on the upstream side of the pressure equalizing tube.3. The turbo compressor according to claim 1 , wherein the curved passage has an oil catching portion on the curve ...

PUMP FIXING STRUCTURE AND PUMP

A pump fixing structure may include a pump including a pump part, motor part, and a fixing base. The pump part may include an outlet port, inlet port and an impeller. The motor part may rotate the impeller and may include a stator which includes a drive coil and a stator core; and a motor case integrally molded with the stator, the motor case structuring an outer peripheral face of the motor part. The outer peripheral face is formed in a substantially circular truncated cone face shape having a draft angle for drawing the motor case from a die. The pump part may include a fixed part fixed to the fixing base. The fixing base may include a bent metal plate and is provided with a motor support part disposed on a lower side. A buffer member may be disposed between the motor part and the motor support part. 1. A pump fixing structure comprising:a pump comprising a pump part and a motor part; anda fixing base to which the pump is fixed;wherein the pump part comprises an outlet port and an inlet port for fluid and an impeller disposed in an inside of the pump part; a stator which comprises a drive coil and a stator core around which the drive coil is wound; and', 'a motor case which is formed of resin and is integrally molded with the stator, the motor case structuring an outer peripheral face of the motor part;, 'wherein the motor part is structured to rotate the impeller and compriseswherein the outer peripheral face of the motor part is formed in a substantially circular truncated cone face shape having a draft angle for drawing the motor case from a die which is used when the stator and the motor case are integrally molded;wherein the pump part comprises a fixed part which is fixed to the fixing base;wherein the fixing base comprises a bent metal plate and is provided with a motor support part disposed on a lower side with respect to the motor part; andwherein a buffer member having elasticity is disposed between the motor part and the motor support part.2. The pump ...

Amperometric Sensor System

A sensor system that measures at least one parameter of water includes an electronics subsystem and includes a sensor housing electrically and mechanically coupled to the electronics subsystem. The sensor housing encloses a chamber that receives water via at least one inlet and that releases water via at least one outlet. At least one sensor has at least one electrode exposed to water in the chamber. A flow generator causes water to flow through the chamber. A plurality of objects within the chamber move in response to the water flow and abrasively clean the at least one electrode. Preferably, the sensor system includes a chlorine sensor having at least two electrodes. The electronics subsystem applies a first differential voltage between the two electrodes during a measurement interval and then applies a second differential voltage between the two electrodes during an interval following the measurement interval. 1. A method of operating an amperometric sensor having a plurality of electrodes positioned on the face of a sensor body , each of the plurality of electrodes having a surface exposed to water having at least one parameter to be measured by the plurality of electrodes , the method comprising:positioning the surfaces of the plurality of electrodes in a cavity that comprises a volume of water;operating a flow generator to flow the water having the at least one parameter to be measured into, through and out of the cavity to cause the water to flow across the surfaces of the plurality of electrodes at a substantially constant velocity; andmeasuring the at least one parameter of the water while the water is flowing across the surfaces of the plurality of electrodes.2. The method as defined in claim 1 , wherein the flow generator comprises an impeller and comprises a motor to impart rotation to the impeller claim 1 , the method further comprising:positioning the impeller in the cavity to expose the impeller to the water in the cavity;positioning the motor outside ...

ELECTRIC-MOTOR-DRIVEN LIQUID PUMP

A liquid pump has a housing with a suction connection, a pressure connection and a electric motor for rotationally driving a conveying device that has a suction inlet and pressure outlet which communicate with the suction connection and the pressure connection respectively. An electronic power unit for the electric motor is adjacent to the motor and extends transversely to the axis of rotation and is on the rear side of the partition wall of the housing. The suction inlet is arranged at a height smaller than an inner radius of an annular gap between the stator and rotor, whereas a rotor passage extends at a constant height, so that a liquid inducted by way of the suction connection is guided in part via the annular gap and undergoes a deflection at the partition wall, cooling the latter before it passes through the rotor passage to the suction inlet. 1. A liquid pump that is of electric-motor-driven-type , comprising: a housing , which has a suction connection and a pressure connection , an electric motor housed in said housing and which comprises a stator and a rotor which is received within the stator to leave an annular gap; said rotor being drivable for rotation about an axis of rotation; a conveying device , which is in drive connection with the rotor and which has a suction inlet in fluid connection with the suction connection and a pressure outlet in fluid connection with the pressure connection; and an electronic power unit for driving of the electric motor; wherein the housing comprises a partition wall which extends substantially transversely to the axis of rotation and is adjacent to the rotor; and said electronic power unit being mounted on a side of said partition wall remote from the rotor; said liquid pump being characterized in that the suction inlet of the conveying device is arranged at a radial height with respect to the axis of rotation which is smaller than an inner radius of the annular gap , and the rotor has at least one passage which extends ...

IMPELLER

An impeller for use in a pump assembly for a fluid circuit of an engine of a vehicle comprises a plurality of projections provided at radially spaced locations relative to a rotational axis of the impeller, the impeller being rotatable relative to a housing of the pump assembly. The projections extend axially from a surface of the impeller and circumferentially about the rotational axis of the impeller. At least one of the projections is configured to be at least partially received in a recess provided in the housing such that a flow path is provided by the projection and the respective recess, wherein the flow path provides a tortuous flow route for fluid between an inlet and outlet of the pump assembly so as to restrict flow of fluid along said flow path and thereby minimise flow of fluid from the outlet back towards the inlet in a direction opposite to the intended direction of flow. 1. A pump assembly for a liquid circuit of an engine of a vehicle , comprising:an impeller; anda housing, the impeller being rotatable relative to the housing, and the impeller comprising a plurality of projections provided at radially spaced locations relative to a rotational axis of the impeller, the projections extending axially from a surface of the impeller and circumferentially about the rotational axis of the impeller,wherein at least one of the projections is configured to be at least partially received in a recess provided in the housing such that a flow path is provided by the projection and the recess, wherein the flow path provides a tortuous flow route for fluid between an inlet and outlet of the pump assembly so as to restrict flow of fluid along said flow path and thereby minimize flow of fluid from the outlet back toward the inlet in a direction opposite to an intended direction of flow.2. The pump assembly as claimed in claim 1 , wherein the impeller comprises at least three projections.3. The pump assembly as claimed in claim 1 , wherein at least one of the ...

Coverplates for Centrifugal Pumps

Embodiments of the invention extend the viability of centrifugal pumps commonly used by fracturing blenders by utilizing, for example, a coverplate with an integrated flange. The coverplate is adapted to be attached to the pump and piping of the fracturing blender. The coverplate can include a substantially cylindrical body of a first and second sides having an outer surface with a circumferential outer rim that substantially surrounds the outer surface. The substantially cylindrical body can also surrounding an orifice. The first side of the coverplate side includes, for example, a substantially circular face that at least partially tapers, the second side includes the integral flange with a circumferential groove and extends outwardly away from the first side. Embodiments of the invention also include methods of attaching the coverplate to the pump and the pipe and operating the pump with the coverplate attached thereto. 1. A coverplate for centrifugal pumps comprising:a substantially cylindrical body having an outer surface with a circumferential outer rim that substantially surrounds the outer surface;a first side and a second side, the substantially cylindrical body surrounding an orifice with an at least partially tapered diameter that decreases from the first side to the second side;the first side having a substantially circular face that at least partially tapers toward the second side, the face of the first side adapted to be positioned at least partially within a centrifugal pump when the coverplate is attached to the centrifugal pump;the second side having an integral flange extending outwardly therefrom away from the first side, the flange of the second side circumscribed by a circumferential groove adapted to facilitate attachment of the coverplate to a suction pipe using a clamp coupling, the second side facing outwardly from the centrifugal pump when the coverplate is attached to the centrifugal pump;the outer rim having a plurality of apertures ...

TURBOPUMP WITH AXIALLY CURVED VANE

A turbopump includes an impeller () that is rotatable about an axis (A). A discharge collector () is located radially outward of the impeller. A passage () fluidly connects the impeller to the discharge collector. The passage is curved. 1. A turbopump comprising:an impeller rotatable about an axis;a discharge collector; anda passage that fluidly couples the impeller to the discharge collector, and the passage includes a vane that is curved in the direction of the axis.2. The turbopump as recited in claim 1 , wherein the impeller has inlet side claim 1 , and the vane is curved toward the inlet side.3. The turbopump as recited in claim 1 , wherein the discharge collector has a flat side claim 1 , and the passage opens into the discharge collector at the flat side.4. The turbopump as recited in claim 3 , wherein the discharge collector has a symmetry with respect to a line of symmetry that intersects the vane.5. The turbopump as recited in claim 1 , wherein the vane includes a leading edge at the impeller and a trailing edge at the discharge collector claim 1 , and the vane diverges from the leading edge to the trailing edge.6. The turbopump as recited in claim 1 , wherein the vane includes a leading edge at the impeller and a trailing edge at the discharge collector claim 1 , and the trailing edge is flush with an interior surface of the discharge collector.7. The turbopump as recited in claim 1 , wherein the vane includes a leading edge at the impeller and a trailing edge protruding into the discharge collector.8. The turbopump as recited in claim 1 , wherein there is a radial direction perpendicular to the axis claim 1 , and the vane is curved up to 45° with respect to the radial direction.9. The turbopump as recited in claim 1 , wherein the vane is a diffuser vane.10. The turbopump as recited in claim 1 , wherein the vane is a guide vane.11. A turbopump comprising:an impeller that is rotatable about an axis;a discharge collector radially outwards of the impeller;a ...

Improved Reversible Pump-Turbine Installation

The present invention is a reversible pump-turbine installation position in a vertical shaft instead of in a conventional underground powerhouse or deep concrete powerhouse. The required plant cavitation coefficient may be achieved by simply boring a vertical shaft to the required depth rather than routing the water flow to and from a deeply buried powerhouse. A pneumatically controlled pressure relief valve may be incorporated into this invention.

Electrical Feedthrough For Subsea Submersible Well Pump in Canister

A subsea pump assembly includes a tubular conduit that has an upstream end plate and an inlet for flowing well fluid into an interior of the conduit. A power cable opening extends through the upstream end plate. An electrical submersible pump and motor are in the interior of the conduit. The motor has a motor assembly housing with an upstream end having an electrical insulator opening. An end connection secures the upstream end to an interior side of the upstream end plate with the insulator opening registering with the power cable opening. An insulated electrical connector is mounted in the insulator opening. A motor wire in the motor assembly housing joins to an inner end of the electrical connector. A power conductor extends from exterior of the conduit through the power cable opening and joins to an outer end of the electrical connector. 1. A subsea pump assembly , comprising:a tubular conduit adapted to be installed subsea, the conduit having a longitudinal axis, an upstream end plate, and an inlet for flowing well fluid into an interior of the conduit;a power cable opening extending through the upstream end plate;an electrical submersible pump (ESP) in the interior of the conduit, the ESP comprising a motor assembly and a pump, the pump having an intake in fluid communication with the well fluid in the interior of the conduit, the pump having a discharge for pumping the well fluid from the conduit;the motor assembly having a motor assembly housing with an upstream end that secures to an interior side of the upstream end plate over the power cable opening; anda power conductor extending through the power cable opening into the upstream end of the motor assembly housing.2. The submersible pump assembly according to claim 1 , further comprising:an electrical insulator mounted in the upstream end of the motor assembly housing;an electrical connector mounted in the insulator;a motor wire within the motor assembly housing joining an inner end of the electrical ...

Speed Control

In some embodiments, a pumping system for at least one aquatic application controlled by a user is disclosed. The pumping system includes a pump and a motor disposed in a first housing and coupled to the pump. A user interface is associated with a second housing, the second housing defined by a base portion shaped to interact with the first housing and a user interface portion that carries a plurality of control buttons, wherein the second housing is selectively positionable among a plurality of positions relative to the first housing. 1. A pumping system for at least one aquatic application controlled by a user , the pumping system comprising:a pump;a motor disposed in a first housing and coupled to the pump; anda user interface associated with a second housing, the second housing defined by a base portion shaped to interact with the first housing and a user interface portion that carries a plurality of control buttons, wherein the second housing is selectively positionable among a plurality of positions relative to the first housing.2. The pumping system of claim 1 , wherein the user interface portion is fastened to the first housing with a plurality of fasteners.3. The pumping system of claim 1 , wherein an interfacing region between the base portion and the first housing is rectangular.4. The pumping system of claim 1 , wherein the aquatic application is a pool or spa.5. The pumping system of claim 1 , wherein the user interface includes a protective cover.6. The pumping system of claim 5 , wherein the cover is opaque.7. The pumping system of claim 1 , wherein the plurality of control buttons includes at least one user input component to select a first speed value associated with a first time period and at least a second user input component to select a second speed value associated with a second time period.8. The pumping system of claim 7 , wherein the user interface includes a first visual indicator that illuminates when the pumping system is operational and ...

RELATING TO CENTRIFUGAL PUMP IMPELLERS

A centrifugal pump impeller includes front and back shrouds and a plurality of pumping vanes therebetween, each pumping vane having a leading edge in the region of an impeller inlet and a trailing edge, the front shroud has an arcuate inner face in the region of the impeller inlet, the arcuate inner face having a radius of curvature (Rin the range from 0.05 to 0.16 of the outer diameter of the impeller (D) The back shroud includes an inner main face and a nose having a curved profile with a nose apex in the region of the central axis which extends towards the front shroud, there being a curved transition region between the inner main face and the nose. Fis the radius of curvature of the transition region and the ratio F/Dis from 0.32 to 0.65. Other ratios of various dimensions of the impeller are also described. 1. An impeller for use in a centrifugal pump , the pump including a pump casing having a chamber therein , an inlet for delivering material to be pumped to the chamber and an outlet for discharging material from the chamber , the impeller being mounted for rotation within the chamber when in use about a rotation axis , the impeller including a front shroud , a back shroud and a plurality of pumping vanes therebetween , each pumping vane having a leading edge in the region of an impeller inlet and a trailing edge , wherein the front shroud has an arcuate inner face in the region of the impeller inlet , the arcuate inner face having a radius of curvature (R) in the range from 0.05 to 0.16 of the outer diameter of the impeller (D) , said back shroud including an inner main face and a nose having a curved profile with a nose apex in the region of the central axis which extends towards the front shroud , there being a curved transition region between the inner main face and the nose , wherein Fis the radius of curvature of the transition region , the ratio F/Dbeing from 0.32 to 0.65.2. An impeller for use in a centrifugal pump , the pump including a pump casing ...

CENTRIFUGAL PUMP IMPELLER

A centrifugal pump impeller in an electromotive centrifugal pump, the impeller including a base body having a bearing to which is attached, on a first end, a permanent-magnetic rotor and, on a second end, a cover disk that is mounted on the base body; and a plurality of pump blades made of first and second parts, the first part being a base blade segment attached to the base body thus forming a first unitary piece and a cover disk blade segment attached to the cover disk thus forming a second unitary piece. 1. A centrifugal pump impeller in an electromotive centrifugal pump , the impeller comprising:a base body having a bearing, a permanent-magnetic rotor and a cover disk being mounted on the base body; anda plurality of pump blades made of first and second parts, the first part being a base blade segment attached to the base body thus forming a first unitary piece and a cover disk blade segment attached to the cover disk thus forming a second unitary piece.2. The centrifugal pump impeller according to claim 1 , further comprising a plurality of axial boundary surfaces formed on the cover disk blade segments claim 1 , wherein essentially all of the axial boundary surfaces of the cover disk blade sements lie adjacent to the base body on the same plane.3. The centrifugal pump impeller according to claim 2 , wherein the axial boundary surfaces of the cover disk blade segments lie flat against the base body.4. The centrifugal pump impeller according to claim 3 , further comprising grooves formed in the base body claim 3 , wherein the cover disk blade segments are inserted in the grooves.5. The centrifugal pump impeller according to claim 3 , wherein the cover disk blade segments are connected to the base body by ultrasonic welding.6. The centrifugal pump impeller according to claim 3 , wherein the cover disk blade segments are connected to the base body by adhesive bonding.7. The centrifugal pump impeller according to claim 3 , further comprising connecting pins ...

CENTRIFUGAL PUMP ASSEMBLIES HAVING AN AXIAL FLUX ELECTRIC MOTOR AND METHODS OF ASSEMBLY THEREOF

An electric motor assembly includes a bearing assembly including a rotating component and at least one stationary component. The electric motor assembly also includes an impeller coupled to the rotating component. The impeller includes an inlet and an outlet and is configured to direct a fluid between the inlet and the outlet. The electric motor assembly also includes a rotor assembly directly coupled to the impeller. A fluid flow channel is defined between the rotating component and the at least one stationary component. The flow channel includes a first end proximate the impeller outlet and a second end proximate the impeller inlet. 1. An electric motor assembly comprising:a bearing assembly comprising a rotating component and at least one stationary component;an impeller coupled to said rotating component, wherein said impeller comprises an inlet and an outlet and is configured to direct a fluid therebetween; anda rotor assembly directly coupled to said impeller, wherein a fluid flow channel is defined between said rotating component and said at least one stationary component, said fluid flow channel comprising a first end proximate said impeller outlet and a second end proximate said impeller inlet.2. The electric motor assembly in accordance with claim 1 , wherein said impeller is configured to pressurize the fluid such that the fluid is at a negative pressure at said impeller inlet claim 1 , and at a positive pressure at said impeller outlet.3. The electric motor assembly in accordance with claim 2 , wherein said first end comprises an inlet of said fluid flow channel claim 2 , and wherein said second end comprises an outlet of said fluid flow channel.4. The electric motor assembly in accordance with claim 1 , further comprising a stator assembly positioned adjacent said rotor assembly to define an axial gap therebetween claim 1 , wherein a portion of said fluid flow channel extends along said axial gap.5. The electric motor assembly in accordance with claim 1 ...

BI-DIRECTIONAL HYDROSTATIC THRUST BEARING FOR A ROTATING MACHINE

A fluid machine in communication with a thrust bearing fluid source includes a housing having a bearing portion receiving fluid from the fluid source. A bearing chamber is formed in the bearing portion. An extension of a rotor is positioned within the bearing chamber so that a first pocket is disposed adjacent to a first side of the extension and a second pocket is disposed adjacent to a second side of the extension. An extension lateral side is adjacent to the bearing chamber lateral side. The extension comprises a first channel extending from a first half of the extension lateral side to the first pocket. The extension comprises a second channel extending from a second half of the extension lateral side opposite the first channel to the second pocket. The bearing chamber receives fluid from the bearing channel which is communicated to the first and second channels and the pockets. 1. A fluid machine in communication with a thrust bearing fluid source comprising:a housing having a bearing portion having a bearing surface, said bearing portion comprising a bearing channel receiving fluid from the fluid source;a rotating portion rotating at least partially disposed within the housing, said rotating portion having a sealing surface directly adjacent to the bearing surface;a thrust bearing disposed between the rotating portion and the bearing portion, said thrust bearing comprisinga bearing chamber formed within the bearing portion and a bearing chamber lateral side, said bearing chamber receiving fluid from the bearing channel through the bearing chamber lateral side;an extension extending from the sealing surface of the rotating portion, said extension positioned within the bearing chamber so that a first pocket of the bearing chamber is disposed adjacent to a first side of the extension and a second pocket of the bearing chamber is disposed adjacent to a second side of the extension, said extension comprising an extension lateral side extending between the first ...

BILGE PUMP ARRANGEMENT HAVING BACK FLOW PREVENTER

Apparatus for providing liquid from a reservoir of liquid contained in a vehicle/vessel or other equipment, featuring a pump for pumping liquid having a pump housing outlet nozzle; and a back flow preventer assembly having an inlet end to couple to the outlet nozzle, having an outlet end to couple to an outlet hose for connecting to an outlet exiting a wall of a vehicle, vessel or other equipment, and having a duckbill-type check valve to provide liquid being pumped in one direction from the reservoir of the vehicle, vessel or other equipment to the outlet exiting the wall of the vehicle, vessel or other equipment via the outlet hose, and also configured to prevent residue liquid left in the outlet hose from flowing back into the pump and returning to the reservoir once the pump has completed pumping if the outlet exiting the wall of the vehicle, vessel or other equipment is above the outlet nozzle, so as to prevent on an on/off oscillation of the pump depending on the volume of residue liquid left in the outlet hose. 1. Apparatus for providing liquid from a reservoir of liquid contained in a vehicle , vessel or other equipment , comprising:a pump configured to respond to a level of liquid contained in a reservoir in a vehicle, vessel or other equipment, and turn on/off for pumping the liquid based on the level of the liquid sensed, and also configured with a pump housing outlet nozzle for providing the liquid being pumped; anda back flow preventer assembly having an inlet configured to couple to the pump housing outlet nozzle, having an outlet configured to couple to an outlet hose for connecting to an outlet exiting a wall of the vehicle, vessel or other equipment, and having a duckbill-type check valve with at least one duckbill lip configured to open and provide the liquid being pumped by the pump in one direction from the reservoir of the vehicle, vessel or other equipment to the outlet exiting the wall of the vehicle, vessel or other equipment via the outlet ...

PUMP APPARATUS

Pump apparatus comprising a base or chassis, a power unit and a reel assembly each operatively mounted to the base or chassis, a flexible conveyor conduit and flexible service line adapted to be payed out from the reel assembly and a work head including a pump operatively connected to the conveyor conduit. The work head comprises a pump having an outlet which is operatively connected to a conveying conduit, a support frame to which the pump is mounted and a powered traction drive assembly operatively mounted to the support frame. The reel assembly comprises a reel rotatably mounted to the base or chassis, a conveying conduit and a flexible service line, each being adapted to be wound thereon and payed out therefrom. 1. A work head suitable for use in a pump apparatus , the pump apparatus comprising a base or chassis , the work head being adapted to be payed out from the base or chassis for location at a work site , the work head comprising a pump having an outlet which is operatively connected to a conveying conduit , a support frame to which the pump is mounted and a powered traction drive assembly operatively mounted to the support frame.2. The work head according to claim 1 , wherein the traction drive assembly includes two drive wheels each independently powered.3. The work head according to claim 2 , wherein each drive wheel has associated therewith a respective drive motor.4. The work head according to claim 3 , wherein said drive motors are hydraulic mounted to the support frame.5. The work head according to claim 1 , wherein the support frame is in the form of a cage structure for pumps being mounted within the cage structure.6. The work head according to claim 5 , wherein the cage structure is generally spherical in shape claim 5 , the pump being mounted within the spherical shaped cage structure.7. The work head according to claim 1 , wherein said support frame comprises a front section claim 1 , a rear section and opposed side sections arranged so as to ...

MOTOR-DRIVEN COMPRESSOR

A motor-driven compressor includes an electric motor, a housing including a tubular bearing holder, and plastic members. Each of the plastic members includes a connecting passage. The electric motor includes a stator including a stator core and coils. The coils include a coil end. The connecting passage has opposite ends in the axial direction, each of the opposite ends including an opening so that two spaces defined by the stator core in the housing are connected to each other through the connecting passage. The bearing holder is at least partially opposed to one of the openings of the connecting passage and disposed at an inner side of the coil end in the radial direction. 1. A motor-driven compressor , comprising:a compression portion configured to use rotation of a rotation shaft to compress a fluid;an electric motor configured to rotate the rotation shaft, the electric motor including a tubular stator extending along an axis of the rotation shaft and a rotor disposed at an inner side of the stator in a radial direction; anda housing accommodating the electric motor and including a tubular bearing holder that holds a bearing; whereinthe rotation shaft is rotationally supported by the bearing in the housing,the stator includes a tubular stator core and coils,the stator core includes teeth extending in the radial direction and slots defined between circumferentially adjacent ones of the teeth,the coils are wound through the slots on the teeth,the coils include a coil end projecting beyond at least one end surface of the stator core in an axial direction,the motor-driven compressor further comprises plastic members, each of the plastic members including a wall extending along the axis and a connecting passage surrounded by the wall and extending along the axis,each of the teeth includes a proximal end, which is an outer end in the radial direction, and a distal end including a flange,the wall of each of the plastic members is disposed in a corresponding one of the ...

ROTARY DEVICE HAVING A RADIAL MAGNETIC COUPLING

Rotary devices having a casing and an inner drive portion of a magnet coupling disposed inside of a rotor assembly are disclosed. The inner drive portion and rotor assembly are disposed within the casing and rotatable about a rotational axis. The rotor assembly includes a bushing between the magnets of the rotor assembly and a stationary canister is sealed to the casing and separates an internal fluid chamber within the casing from the inner driven portion. The stationary canister can be of multi-piece or unitary construction and is held in position by a front portion of the casing. 1. A rotary device having a magnet coupling comprising:a casing having a front portion and a rear portion;a rotatable inner drive portion of a magnetic coupling having multiple magnets proximate an outer periphery of the inner drive portion;a rotor assembly that includes a driven portion of the magnetic coupling having multiple magnets proximate an inner periphery of the rotor assembly;the inner drive portion and rotor assembly being disposed within the casing and being rotatable about a rotational axis;a stationary canister comprising a substantially cylindrical portion disposed between the magnets of the inner drive portion and the magnets of the rotor assembly and including a radial bearing surface that engages the rotor assembly, an axial bearing surface that engages the rotor assembly in one axial direction, and separates an internal fluid chamber within the casing from the inner driven portion.2. The rotary device of wherein the rotor assembly further comprises a bushing disposed between the inner periphery of the magnets of the rotor assembly and the substantially cylindrical portion of the stationary canister.3. The rotary device of wherein the bushing disposed between the inner periphery of the magnets of the rotor assembly and the substantially cylindrical portion of the stationary canister includes a radial bearing surface that engages the stationary canister claim 2 , an ...

Blood pump with separate mixed-flow and axial-flow impeller stages and multi-stage stators

A pump for a fluid which can be blood has a stator housing and a rotor hub with leading and trailing portions and an intermediate portion disposed therebetween. At least one impeller blade at the leading portion drives circumferential and axial components of a flow into a pump annulus or intermediate pathway portion. At least one stator blade extends radially inward from the stator housing within the intermediate pathway portion and is configured to reduce a circumferential component of the flow.

PLASTIC PUMP, AND METHOD FOR MANUFACTURING SAME

A plastic pump comprises a complete body having an inner body made of a fluorine resin and an outer body made of a plastic material by molding the plastic material in a first mold after fixing a pre-manufactured inner body to the first mold, an impeller made of a fluorine resin material by means of injection molding, and an impeller cover made of a plastic material by molding the plastic material in a second mold to protect the impeller, and a fluid transporting path is lined with the fluorine resin of the inner body. 1. A plastic pump , comprising:a complete body having an inner body made of a fluorine resin material and an outer body made of a first plastic material by injecting the first plastic material in a first mold after fixing the inner body to a first mold;an impeller made of a fluorine resin material by an injection mold;an impeller cover made of a second plastic material by molding the second plastic material in a second mold,wherein a fluid transporting path is only formed in the inner body consisting of the fluorine resin material.2. The plastic pump of claim 1 , wherein the fluorine resin material of the inner body is different from the first plastic material of the outer body.3. The plastic pump of claim 2 , wherein the fluorine resin material of the inner body is PFA or PVDF claim 2 , and the first plastic material of the outer body is PP claim 2 , PVC or PPS.4. The plastic pump of claim 3 , wherein the PFA claim 3 , which is the fluorine resin material of the inner body claim 3 , has a melting temperature of 270° C. to 420° C.5. The plastic pump of claim 3 , wherein the PVDF claim 3 , which is the fluorine resin material of the inner body claim 3 , has a melting temperature of 170° C.˜235° C.6. The plastic pump of claim 1 , wherein the fluorine resin material of the impeller is different from the first plastic material of the outer body.7. The plastic pump of claim 1 , wherein the inner body made of the fluorine resin material has a thickness of 1˜ ...

Finger pump

In this pump, the angle between the imaginary tangent plane to the lip and passing through the axis and an imaginary straight line, perpendicular to the axis and passing through the point furthest from the axis of intersection of the upper surface of a finger with the lateral leading surface of this finger, is between 110 and 140°.

Centrifugal pump apparatus

A centrifugal blood pump apparatus includes a plurality of permanent magnets ( 17 ) in an impeller ( 10 ) in a blood chamber ( 7 ), a plurality of coils ( 20 ) in a motor chamber ( 8 ), and a magnetic element ( 18 ) in each of the coils ( 20 ). The magnetic elements ( 18 ) are made shorter than the coils ( 20 ) to lower attractive force between the magnetic elements ( 18 ) and the permanent magnets ( 17 ) in the impeller ( 10 ), to set a large gap between the magnetic elements ( 18 ) and the permanent magnets ( 17 ). As a result, axial attractive force and negative rigidity can be lowered while required torque is satisfied.

Centrifugal Pump

A centrifugal pump that includes an inlet chamber having a distal end portion and an opposing proximal end portion with a longitudinal axis spanning therebetween. Further included in the centrifugal pump is a plenum chamber having an inlet end portion and an outlet end portion, the inlet end portion is in fluid communication with the inlet chamber proximal end portion, the outlet end portion having an aperture that is about a radial axis that extends radially a distance outward from the longitudinal axis. Wherein operationally for the centrifugal pump the inlet chamber and the inlet and plenum chambers are rotated about the longitudinal axis wherein a fluid is drawn through the distal end portion toward the proximal end portion and ultimately discharged therethrough the aperture.

DOWNHOLE CHEMICAL INJECTION METHOD AND SYSTEM FOR USE IN ESP APPLICATIONS

Provided is a chemical injection pump that is installed below an electric submersible pump. In general, the chemical injection pump is either driven by an electric motor that draws power from the electric submersible pump motor or from energized fluid leaving the electric submersible pump output port. The electric submersible pump provides electric or hydraulic power to run the chemical injection pump. Therefore, no surface chemical injection pump is required and hence less space is needed. 19-. (canceled)10. A method for protecting electric submersible pumps from damages from downhole conditions comprising the steps of: an electric submersible pump component, the electric submersible pump component including an electric pump having a top electric pump portion and a bottom electric pump portion, a seal having a top seal portion and bottom seal portion, an electric submersible pump motor having a top electric submersible pump motor portion and a bottom electric submersible pump motor portion, and a monitoring tool having a top monitoring tool portion and a bottom monitoring tool portion,', 'the electric pump having an electric pump intake operable to receive production fluids, the top seal portion adapted to be connected to the bottom electric pump portion and the bottom seal portion adapted to be connected to the top electric submersible pump motor portion, the bottom electric submersible pump motor portion adapted to be connected to the top monitoring tool portion,', 'the bottom monitoring tool portion adapted to be connected to a chemical injection pump component operable to be disposed in the well, the chemical injection pump component including a chemical injection pump motor having a top chemical injection pump motor portion and a bottom chemical injection pump motor portion, and a chemical pump having a top chemical pump portion and a bottom chemical pump portion, a chemical injection pump having an intake port adapted to be connected to a capillary tube ...

PLASTIC PUMP, AND METHOD FOR MANUFACTURING SAME

The present invention relates to a plastic pump and to a method for manufacturing same. The method includes: a pre-manufacturing step for pre-manufacturing an inner body and impeller formed from a fluorine resin material by means of injection molding; a body manufacturing step for manufacturing a complete body, in which the inner body is formed from a fluorine resin and the outer body is formed from a plastic material, by molding the plastic material in a first mold after fixing the pre-manufactured inner body to the first mold; a cover manufacturing step for manufacturing an impeller cover, which is formed from a plastic material, by molding the plastic material in a second mold so as to protect the manufactured impeller; and a finishing step for completing the plastic pump by sequentially assembling the manufactured complete body, the impeller, and the impeller cover. According to the present invention, only a fluid transporting path is lined with the fluorine resin and is thus not easily deformed by temperature regardless of the type of fluid and is resistant to a chemical reaction with a fluid for improved product quality and significant extension of the period over which the pump can be used. 1. A method for manufacturing a plastic pump , comprising:a pre manufacturing step wherein an inner body made of a fluorine resin material and forming a fluid transporting path and an impeller engaged to the inner body are previously manufactured through an injection mold method;a body manufacturing step wherein for manufacturing a complete body, in which the inner body is formed from a fluorine resin and the outer body is formed from a plastic material, by molding the plastic material in a first mold after fixing the pre-manufactured inner body to the first mold;a cover manufacturing step wherein for manufacturing impeller cover, which is formed a plastic material, by molding the plastic material in a second mold so as to protect the manufactured impeller; anda finishing ...

WATER-COOLING HEAD

A water-cooling head includes a casing, a base, an input channel, an output channel and a pump. An active space is defined by the base and the casing collaboratively. A working medium is filled in the active space. The heat absorbed by the base is transferred to the working medium. The input channel is in communication with the active space. The cooled working medium is introduced into the active space through the input channel. The output channel is in communication with the active space. The heated working medium is outputted from the active space through the output channel. The pump is installed on the casing, and includes an impeller. The impeller is disposed within the active space and located near the output channel. The impeller is driven to guide the working medium to be outputted from the active space through the output channel. 1. A water-cooling head , comprising:a casing;a base, wherein an active space is defined by the base and the casing collaboratively, a working medium is filled in the active space, and a heat absorbed by the base is transferred to the working medium;an input channel in communication with the active space, wherein after the working medium is cooled, the working medium is introduced into the active space through the input channel;an output channel in communication with the active space, wherein after the working medium absorbs the heat, the working medium is outputted from the active space through the output channel; anda pump installed on the casing, and comprising an impeller, wherein the impeller is disposed within the active space and located near the output channel, and the impeller is driven to guide the working medium to be outputted from the active space through the output channel, wherein the impeller comprises a seat part and a hollow part.2. The water-cooling head according to claim 1 , wherein the active space is divided into a heat-absorbing space and a drainage space by the seat part claim 1 , and the working medium ...

Downhole Chemical Injection Method and System for Use in ESP Applications

Provided is a chemical injection pump that is installed below an electric submersible pump. In general, the chemical injection pump is either driven by an electric motor that draws power from the electric submersible pump motor or from energized fluid leaving the electric submersible pump output port. The electric submersible pump provides electric or hydraulic power to run the chemical injection pump. Therefore, no surface chemical injection pump is required and hence less space is needed. 1. A damage resistant apparatus for enhancing production from a well , the apparatus comprising:an electric submersible pump component having a first pump driver assembly; anda chemical injection pump component operable to be disposed in the well, the chemical injection pump component having a second pump driver assembly operable independently from the first pump driver assembly and a top chemical pump portion, further having an intake port adapted to be connected to a capillary tube operable to receive an inhibitor from a tank at a surface, wherein the electric submersible pump component has a bottom portion adapted to be connected to the top chemical pump portion.2. A damage resistant apparatus for enhancing production from a well , the apparatus comprising:an electric submersible pump component, the electric submersible pump component including an electric pump having a top electric pump portion and a bottom electric pump portion, a seal having a top seal portion and bottom seal portion, an electric submersible pump motor having a top electric submersible pump motor portion and a bottom electric submersible pump motor portion, and a monitoring tool having a top monitoring tool portion and a bottom monitoring tool portion,the electric pump having an electric pump intake operable to receive production fluids, the top seal portion adapted to be connected to the bottom electric pump portion and the bottom seal portion adapted to be connected to the top electric submersible pump ...

MOTORIZED PUMP

An electrical submersible pump (ESP) and method for pumping fluid from a wellbore. The ESP has a motorized pump with an external rotor motor topology. The motorized pump fits into casing in the wellbore. The motorized pump includes a motor having a motor stator and a motor rotor. The motor stator is at a radial center of the motorized pump. The motorized pump has a centrifugal pump radially surrounding the motor stator. The centrifugal pump includes an impeller and a diffuser. 1. An electrical submersible pump (ESP) comprising: a motor comprising a motor stator and a motor rotor, wherein the motor stator is at a radial center of the motorized pump, and wherein the motor stator comprises laminations and windings;', 'a centrifugal pump radially surrounding the motor stator, the centrifugal pump comprising a pump impeller and a pump diffuser, wherein the pump diffuser comprises a flow path for the fluid as pumped, and wherein in operation the pump impeller rotates and interfaces with the pump diffuser; and', 'a housing radially enclosing the motor stator, the motor rotor, the pump impeller, and the pump diffuser, wherein the pump diffuser is adjacent the housing, and wherein the centrifugal pump comprise a discharge for the fluid on a longitudinal end portion of the motorized pump., 'a motorized pump comprising an external rotor motor topology, wherein the motorized pump to fit into a casing in a wellbore to pump fluid from the wellbore, the motorized pump comprising2. The ESP of claim 1 , wherein the pump impeller is adjacent the motor stator claim 1 , wherein the pump impeller comprises permanent magnets to engage the motor stator in operation for rotation of the pump impeller claim 1 , and wherein the motor rotor and the pump impeller are integrated.3. The ESP of claim 2 , wherein the motor rotor is integrated with the pump impeller by the motor rotor comprising a portion of the pump impeller having the permanent magnets.4. The ESP of claim 3 , wherein the permanent ...

Cooling fan and heat dissipating module including the same

The present disclosure provides a cooling fan and a heat dissipating module including the same. The cooling fan includes a base, a tube, a bearing, a stator, a rotor, and fan blades. The base includes a base convex structure. Each of the fan blades includes a first concave structure. When the cooling fan is working, the base convex structure pass through the first concave structure on each of the fan blades. The base convex structure and the first concave structure not only increase the heat exchange area of the base but break the thermal boundary layer on the base repeatedly to improve the heat dissipating effect when the cooling fan is working.

FLUID PUMPS

In accordance with at least one aspect of this disclosure, embodiments of fluid pumps, pump cases, valve bodies, and volutes are disclosed herein. Embodiments of methods for manufacturing fluid pumps, pump cases, valve bodies, and volutes are also disclosed herein. Embodiments can include additive manufacturing, for example. Certain embodiments can include additively manufacturing a pump case in a tilted orientation, utilizing only coincidental support structure having a unique shape, and with teardrop shaped volute and/or valve body. 1. A fluid pump case , comprising:an interior volute surface defining a volute channel, comprising:a first portion having a D-shaped cross-section;a second portion having a teardrop shaped cross-section downstream of the first portion; anda transition portion between the first portion and the second portion having a changing cross-section.2. The fluid pump case of claim 1 , wherein the teardrop cross-section includes a curved lower-in-build portion and a ramped higher-in-build portion that forms a V-shape extending from the curved lower-in-build portion.3. The fluid pump case of claim 2 , wherein the curved lower-in-build portion has a semicircle cross-section.4. The fluid pump case of claim 3 , wherein the ramped higher-in-build portion includes a curved peak.5. The fluid pump case of claim 4 , wherein the second portion is shaped such that it is additively manufactured without support structure.6. The fluid pump case of claim 5 , wherein a centerline of the peak along the length of the second portion is coplanar with a vertical build direction in build such that the teardrop shape is symmetric about a vertical plane.7. The fluid pump of claim 1 , wherein the first portion has an expanding flow area in a flow direction toward the second portion.8. The fluid pump of claim 7 , wherein the second portion has an expanding flow area or constant flow area in the flow direction.9. The fluid pump of claim 8 , wherein the volute channel ...

Process for producing a vinyl chloride-based polymer

A process for producing a vinyl chloride-based polymer by suspension polymerizing vinyl chloride monomer or the like while circulating a reaction mixture in a polymerization vessel by a circulating pump through a circulation line led out from the polymerization vessel to extend through a heat exchanger back to the vessel, wherein the pump comprises a conical hub (15) and an impeller comprised of a spirally shaped single blade (16) provided on the hub (15), and, during polymerization, the stirring energy (A) applied to the reaction mixture by the stirrer in the polymerization vessel and the circulating energy (B) exerted to the reaction mixture by the circulating pump in the circulation line are controlled so as to satisfy the relationships: (A) + (B) = from 1.5 to 4.0 kW/t   (1), and (B) / [(A) + (B)] = from 0.1 to 0.6   (2). Polymer scale is prevented from being deposited on inner surfaces of the heat exchanger, circulation piping, circulating pump or the like.

Centrifugal screw pump (versions)

FIELD: engines and pumps. SUBSTANCE: centrifugal screw pump comprises a letdown screw and centrifugal wheels mounted in series on a single drive shaft, as well as a spiral branch. The hubs of screw and centrifugal wheels have the form of a truncated cone. The taper angle of the screw wheel hub is close to the angle of the taper angle of the centrifugal wheel hub. The rear edge of the screw wheel hub overlaps the front end of the centrifugal wheel hub. The centrifugal wheel is formed as a gradually unfolding in the circumferential direction of the annular channel. EFFECT: ensuring the continuous movement of a high viscosity medium, while avoiding the formation of stagnant zones and adhesions by finding the optimally simple configurations of the main structural elements and building their joints without the use of complex and expensive technological processes. 4 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 640 901 C2 (51) МПК F04D 1/04 (2006.01) F04D 7/04 (2006.01) F04D 9/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F04D 1/04 (2017.08); F04D 7/045 (2017.08); F04D 9/04 (2006.01) (21)(22) Заявка: 2016124310, 20.06.2016 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Общество с ограниченной ответственностью "Системы Нефть и Газ" (RU) Дата регистрации: 12.01.2018 (56) Список документов, цитированных в отчете о поиске: RU 113794 U1, 27.02.2012. RU (43) Дата публикации заявки: 25.12.2017 Бюл. № 36 (45) Опубликовано: 12.01.2018 Бюл. № 2 2366836 C1, 10.09.2009. US 2349731 A, 23.05.1944. US 3981628 A, 21.09.1976. DE 1001113 A, 17.01.1957. 2 6 4 0 9 0 1 R U (54) Шнекоцентробежный насос (варианты) (57) Реферат: Группа изобретений относится к насосостроению и может быть использована в трубопроводных транспортных системах и погрузоразгрузочных комплексах для перемещения жидкостей, включая углеводородные высоковязкие и содержащие примеси. Шнекоцентробежный насос содержит ...

Liquid pump driven by an electric motor

Шнекоцентробежный насос (варианты)

А 2016124310 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) ак а $ а < (13) < < 5х Эх $ РИ ‘7 >3 (51) МПК ЕО4р 1/04 (2006.0Т) ЕО4р 7/04 (2006.01) РОО 9/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (52) СПК НОЯ 1 (201708); НОЯР 7045 (201708); РОЯр ЭЮЯ (2006.01) (21)(22) Заявка: 2016124310, 20.06.2016 (71) Заявитель(и): Общество с ограниченной ответственностью Приоритет(ы): "Системы Нефть и Газ" (КО) (22) Дата подачи заявки: 20.06.2016 (43) Дата публикации заявки: 25.12.2017 Бюл.№36 | (^^ и Владимир Николаевич (ВИ). Адрес для переписки: Яцынин Николай Александрович (КО) 141014, Московская обл., г. Мытищи, ул. В. Волошиной, 9/24, кв. 240, Ивановой В.Л. (54) Шнекоцентробежный насос (варианты) (57) Формула изобретения 1. Шнекоцентробежный насос (вариант 1), содержащий предвключенное шнековое и центробежное колеса, установленные последовательно на едином приводном валу, а также спиральный отвод, отличающийся тем, что ступицы шнекового и центробежного колес имеют форму усеченного конуса, угол конусности ступицы шнекового колеса близок углу конусности ступицы центробежного колеса, задняя кромка ступицы шнекового колеса перекрывает внахлест передний торец ступицы центробежного колеса, которое сформировано в виде постепенно разворачивающегося в периферическом направлении кольцевого канала. 2. Шнекоцентробежный насос по п. 1, отличающийся тем, что шнековое и центробежное колеса установлены на валу в шлиц и зафиксированы накидной гайкой, причем центробежное колесо имеет существенно больший диаметр, чем шнековое. 3. Шнекоцентробежный насос по п. 1, содержащий шнек с лопастями, рабочие поверхности которых имеют форму, близкую геликоиду, а кромки лопастей обрезаны виртуальной поверхностью вращения, ось которой совпадает с осью ступицы шнекового колеса, причем внутренняя поверхность корпуса насоса, охватывающая шнек и другие части ротора, эквидистантна виртуальной поверхности вращения кромок ротора. 4. Шнекоцентробежный насос (вариант 2), содержащий ...

Marine water jet propellers and pumps driven by fully sealed motors

완전밀폐형 전기모터에 의해 운전되는 물분사 추진기는 그내에 장착된 밀봉 시일형 스테이터(14)를 갖는 중공 하우징(4)을 포함한다. 스테이터는 배안의 전기공급수단(18)인 전원에 접속되어 있다. 관형 흡인 슈라우드(22)와 임펠러(24)를 포함하는 임펠러 조립체(20)는 하우징 내부에 회전가능하게 장착되어 있다. 임펠러 조립체는 흡인 슈라우드 둘레에 장착되고 그와 연관되어 작동되는 스테이터 내부에 배치된 밀봉 시일형 로터(26)를 포함한다. 스테이터가 통전되면 로터가 회전되고 차례로, 하우징의 유입단(10)으로 부터 하우징의 배출단(12)까지 물을 펌핑하여 배출단으로 부터 방출되는 물에 속도 및 낙차를 부가한다. 방출된 물은 배를 추진시키는 트러스트를 생성한다. The water jet propeller driven by the fully enclosed electric motor comprises a hollow housing 4 with a sealed seal stator 14 mounted therein. The stator is connected to a power source, which is the electricity supply means 18 in the boat. An impeller assembly 20 comprising a tubular suction shroud 22 and an impeller 24 is rotatably mounted within the housing. The impeller assembly includes a sealed seal rotor 26 disposed inside the stator mounted around and actuated with the suction shroud. When the stator is energized, the rotor is rotated and in turn, pumps water from the inlet end 10 of the housing to the outlet end 12 of the housing to add speed and drop to the water discharged from the outlet end. The released water creates a trust that propels the ship.

Amperometric sensor system

물의 적어도 하나의 파라미터를 측정하는 센서 시스템이 전자기기 서브시스템, 및 전자기기 서브 시스템에 전기적 및 기계적으로 결합되는 센서 하우징을 포함한다. 센서 하우징은 적어도 하나의 유입구를 통해 물을 수용하며 적어도 하나의 배출구를 통해 물을 배출하는 챔버를 둘러싼다. 적어도 하나의 센서는 챔버 내의 물에 노출된 적어도 하나의 전극을 구비한다. 유동 발생기가 물이 챔버를 통해 흐르게 한다. 챔버 내의 복수의 물체가 물 유동에 응답하여 움직이며, 적어도 하나의 전극을 연마 세척한다. 바람직하게는, 센서 시스템은 적어도 2개의 전극을 구비한 염소 센서를 포함한다. 전자기기 서브시스템은 측정 간격 동안 두 전극 사이로 제1 차동 전압을 인가하고, 이후 측정 간격에 이은 간격 동안 두 전극 사이로 제2 차동 전압을 인가한다. A sensor system for measuring at least one parameter of water includes an electronics subsystem and a sensor housing electrically and mechanically coupled to the electronics subsystem. The sensor housing encloses a chamber for receiving water through at least one inlet and discharging water through at least one outlet. The at least one sensor has at least one electrode exposed to water in the chamber. The flow generator causes water to flow through the chamber. A plurality of objects in the chamber move in response to the water flow and polish at least one electrode. Preferably, the sensor system comprises a chlorine sensor having at least two electrodes. The electronics subsystem applies a first differential voltage between two electrodes during the measurement interval and then applies a second differential voltage between the two electrodes during the interval following the measurement interval.

Methods for manufacturing plastic pumps

본 발명은 플라스틱 펌프 제조방법에 관한 것으로써, 불소수지(PFA 또는 PVDF) 재질로 이루어진 내부 몸체 및 임펠러(impeller)를 사출금형을 통해 사전 제작하는 사전제작공정, 상기 사전 제작된 내부 몸체를 제1 금형에 고정한 후, 제1 금형에 플라스틱 재료(PP 또는 PVC 또는 PPS)를 사출하여 내부 몸체는 불소수지로 이루어지고, 외부 몸체는 플라스틱 재질로 이루어진 전체 몸체를 제작하는 몸체제작공정, 상기 제작한 임펠러를 보호하기 위해 제2 금형에 플라스틱 재료(PP 또는 PVC 또는 PPS)를 사출하여 플라스틱 재질로 이루어진 임펠러 커버를 제작하는 커버제작공정 및 상기 제작된 전체 몸체와 임펠러 및 임펠러 커버를 순차적으로 조립하여 플라스틱 펌프를 완성하는 마무리공정을 포함한 제조방법 및 그 제조방법으로 얻어지는 플라스틱 펌프를 제공함으로써, 유체이송로만을 불소수지로 라이닝하여 유체의 종류에 상관없이 온도에 의해 쉽게 변형되지 않고, 유체와의 화학적 반응에 강하여 제품의 품질을 향상시키며, 펌프의 사용주기도 대폭 연장시킬 수 있다는 효과가 얻어진다. The present invention relates to a method of manufacturing a plastic pump, which comprises a pre-manufacturing step of pre-manufacturing an inner body and an impeller made of a fluororesin (PFA or PVDF) material through an injection mold, (PP or PVC or PPS) is injected into the first metal mold, the inner body is made of fluororesin, and the outer body is made of a plastic material. (PP or PVC or PPS) is injected into the second metal mold to protect the second metal mold and the impeller cover, and then the impeller and the impeller cover are sequentially assembled to form a plastic pump And a finishing step of finishing the plastic pump, and a plastic pump obtained by the manufacturing method Therefore, it is possible to improve the quality of the product by strengthening the chemical reaction with the fluid and to prolong the service life of the pump. .

Pump for dissolved air flotation and driving method thereof

본 발명은 펌프 내에서 가압된 유체와 공기가 과포화 상태의 혼합액으로 변화되어 저압으로 배출시 미세 기포가 발생되면서 수중의 부유물질이 제거되도록 한 용존공기부상 펌프에 관한 것이다. 본 발명에 따른 용존공기부상 펌프는 유체의 이동경로를 형성함과 아울러 외부로부터의 유입되는 공기를 보관하는 유로형성수단과, 유로형성수단을 관통하도록 형성되어 외부 동력원에 의해 회전하는 회전축과, 유로형성수단 내에 형성되고 상기 유로형성수단과 회전축의 사이에서 유입되는 공기를 일시적으로 보관하기 위한 공간인 스터핑 박스와, 유체의 이동경로에 위치하여 일정한 방향으로 유체를 펌핑함과 아울러 스터핑 박스 내에 유입된 공기를 유입량을 조절하는 임펠러와, 유로형성수단의 일측에 장착되어 상기 스터핑 박스에 유입되는 공기의 유입량을 조절하도록 하는 제1 공기밸브를 구비하는 것을 특징으로 한다. 본 발명에 의하면, 펌프 내에서 가압된 유체와 공기가 과포화 상태의 혼합액으로 변화되어 저압으로 배출시 미세기포가 발생하도록 함으로써 수중의 부유 물질과 충돌·부착되는 원리에 의한 수중의 부유물질을 제거할 수 있게 된다.

Low cavitation impeller and pump

Pump and impeller with low cavitation

FIELD: engines and pumps.SUBSTANCE: group of inventions relates to centrifugal pumps having a combination of axial and radial impellers. Impeller of centrifugal pump contains at least two main blades (MB) and two secondary blades (SB). Each MB passes a continuous ridge along a helical or spiral trajectory around the inlet end from the leading to the trailing edge and has a transition zone between the inlet and outlet ends. Front edge is adjacent to the inlet, and the rear edge defines the first radius of the outlet. Continuous inlet channels are formed between adjacent MB. Each SB is a continuous ridge and is located between two adjacent transition zones of each of the two adjacent MB. Rear edge of each SB determines the second radius of the outlet end, equal to the first radius of the latter. Each SB defines two outlet channels, each of which is bounded by the first and second walls and the bottom. Bottom connects the first and second walls. First wall is the surface of the SB, the second is the surface of the adjacent MB, and the bottom of each outlet channel is the surface of the impeller. Discharge opening is made at the bottom of each outlet channel.EFFECT: inventions are aimed at reducing cavitation and subsequent damage during operation.17 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 681 868 C1 (51) МПК F04D 29/22 (2006.01) F04D 29/66 (2006.01) F04D 29/041 (2006.01) F04D 1/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F04D 29/2222 (2018.08); F04D 29/2272 (2018.08); F04D 29/2266 (2018.08); F04D 29/669 (2018.08); F04D 29/041 (2018.08); F04D 1/04 (2018.08) (21)(22) Заявка: 2018113487, 29.09.2016 29.09.2016 (73) Патентообладатель(и): САНДАЙН, ЛЛС (US) Дата регистрации: 13.03.2019 2004005220 B2, 14.06.2005. EP 359445 A2, 21.03.1990. US 3953150 A1, 27.04.1976. RU 2511967 C1, 10.04.2014. RU 152113 U1, 10.05.2015. 02.10.2015 US 14/874,166 (45) Опубликовано: 13.03.2019 Бюл. № 8 (85) Дата начала ...

Water lifting machinery

PURPOSE: A water level variable water supply system is provided to prevent the suction of the foreign material by pumping water at the floating condition. CONSTITUTION: A water level variable water supply system is composed of a buoyancy unit(10), a motor part(20), a water pumping part(30), and a guide unit(40). The buoyancy unit is floated on the water. The motor part is mounted onto the buoyancy unit. The water pumping part is mounted on the lower part of the buoyancy unit. The water pumping part receives the power from the motor part and executes the suction and discharging of the water according to the rotation of an impeller of the motor part. The guide unit prevents the buoyancy unit from floating in the water pumping.

Motor pump

一种用于泵送液体的机动泵。机动泵包括：轴，该轴设置在机动泵中心部分中；马达，该马达具有马达定子；和泵，该泵具有内部扩压器和外部叶轮，其中马达定子径向围绕泵。壳体径向包围马达定子、内部扩压器和外部叶轮。马达定子被设置成与壳体相邻。

Centrifugal pump

FIELD: motors and pumps. SUBSTANCE: invention relates to pumping equipment. Centrifugal pump comprises a straightening device (SD) installed between the screw and impeller. SD is made with a profiled body, sleeve (S) and located between the S and the inner surface of the body with nine blades (B). SD body is made in the form of a confuser with an inlet groove and an outlet flange for connection, respectively, with a suction pipe and pump body. Generatrix of the outer surface of S in the longitudinal section consists of an arc of a circle forming a convex inlet part of the outer surface of S and a conjugated straight line inclined to the longitudinal axis of SD and forming the output conical part of the outer surface of S. Inner surface of the body of SD is formed from the entrance side of a cylindrical surface smoothly conjugate with a conical and tapering along the flow surface, smoothly conjugated to the output cylindrical surface. S length is less than SD body length. B are smoothly curved along the arc of a circle in the longitudinal section along the flow of the medium with a direction of flow at the outlet along the longitudinal axis of SD. B input and output edges in B longitudinal section are formed by an arc of a circle. At the entrance area, each B gradually increases its thickness and at the output section smoothly tapers towards the output edge. S input section coincides with the outlet section of the groove. B entrance edge is inclined to the vertical in the longitudinal section inside SD, and in the cross section it is made at an acute angle to the radius of SD body. Longitudinal stiffeners are provided on the outer surface of SD body. SD is made in the form of a single part. EFFECT: as a result, it is possible to more effectively convert the kinetic energy of a swirling flow of a pumped fluid into increase in the pressure of the flow of the pumped liquid medium and simultaneously increase the anticavitation properties of a centrifugal pump. 1 cl, 4 ...

Air diffuser system for industrial pumps

원심 펌프용 공기 확산 시스템에서 사용하기 적절한 공기 확산 장치로서, 상기 펌프는 내부에 펌프 챔버를 가진 펌프 케이싱과, 회전축에 대하여 회전하기 위한 펌프 챔버 내에 장착되어 있는 임펠러를 포함하고, 상기 임펠러는 전방 측면과 후방 측면을 포함한다. 공기 확산 시스템은 상기 전방 측면으로부터 후방 측면으로 상기 임펠러를 통하여 연장된 하나 이상의 통로를 구비하고, 상기 통로 또는 각각의 통로는 상기 임펠러의 후방 측면에 제 1 구멍과 전방 측면에 제 2 구멍을 가진다. 공기 확산 장치는 밀폐체 측면과 임펠러 측면을 가지는 주 몸체와, 상기 밀폐체 측면으로부터 상기 임펠러 측면까지 상기 주 몸체를 통하여 연장되어 있는 적어도 하나의 채널을 구비하고, 상기 채널 또는 각각의 채널은 밀폐체 측면에 흡입구와, 임펠러 측면에 배출구와, 주 몸체를 통하여 연장된 기초벽을 가지고, 상기 기초벽은 밀폐체 측면에 선두 단부 부분과, 임펠러 측면에 후미 단부 부분을 가지며, 상기 배출구는 설치시 임펠러의 통로의 제 1 구멍과 유체 연통한다.

Pumping system, in particular for supplying contact ring seal system

FIELD: sealing.SUBSTANCE: invention relates to a contact ring seal system. The system comprises a contact ring seal (2a, 2b) having rotating and stationary contact rings (3, 4) which define a sealing gap (5). The system also has a circulating loop (7) of a fluid medium with a pumping system for supplying a medium to a seal (2a, 2b). The pumping system comprises one drive (11) with a drive shaft (24), a radial pump (23) and first and second axial pumps (21, 22) which pump the fluid medium in an axial direction (X-X) and are located in front of the pump (23) which pumps the medium in a radial direction (R). The drive (11) simultaneously drives the pumps (21, 22, 23). The pumping system has a magnetic clutch (30) with a driving part (30a) and first permanent magnets (31), a fixed hollow cylinder (33) and a driven part (30b) with second permanent magnets (32). The magnets (31) in the axial direction (X-X) are shifted (A) relative to the magnets (32), with the magnets (31) partially overlapping the magnets (32) in the radial direction (R).EFFECT: invention aims at producing a high pressure for fluid medium for a contact ring seal system with a simple structural design and a simple economical production thereof.12 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 743 313 C1 (51) МПК F04D 29/12 (2006.01) F04D 13/02 (2006.01) F04D 1/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F04D 29/128 (2021.01); F04D 13/024 (2020.08); F04D 1/04 (2020.08); F04D 1/006 (2020.08); F04D 1/04 (2021.01) (21)(22) Заявка: 2020117194, 12.11.2018 12.11.2018 Дата регистрации: 17.02.2021 (73) Патентообладатель(и): ИГЛБУРГМАНН ДЖЕРМАНИ ГМБХ УНД КО. КГ (DE) 16.11.2017 DE 10 2017 220 437.0 (45) Опубликовано: 17.02.2021 Бюл. № 5 (56) Список документов, цитированных в отчете о поиске: DE 202006011223 U1, 02.11.2006. RU 109236 U1, 10.10.2011. DE 1165144 B, 12.03.1964. US 3614181 A1, 19.10.1971. SU 126748 A1, 10.10.1960. US 4080112 A1, 21. ...

Single-stage axial flow blood pump

A miniature high-speed intravascular blood pump is formed as a single stage with two rows of rotor blades and a single row of stator blades within a tubular housing. The rotor's first row produces a mixed centrifugal and axial flow, while the rotor's second row produces a purely axial flow. The blades of the second row are shaped so as to produce a uniform blood flow along the trailing edges of the blades. For this purpose, the bases of the outer trailing edges of the second row blades have a negative propulsion angle. The pump has a purge-sealed hydrostatic bearing which is spring-loaded for minimum gap. The pump is driven by a cable encased in a dual-lumen, fluid-filled cable sheath formed of a coextrusion of a soft, blood-compatible outer layer and a stiff, abrasion-resistant inner layer. The cable sheath serves both as a purge fluid supply for the bearing, and as a means for flushing abraded debris away from the pump.

Centrifugal pump device

Impeller including cylinder type vanes

본 발명은 베이스판의 중심으로부터 일방향으로 나선형을 그리며 형성되는 중공의 베인(vane)이 다수 형성되어 중공의 하우징 내부로 유입되는 유체가 임펠러의 회전에 의해 입수구로 유입되고, 유입된 유체는 베이스판의 중심부에서 형성되는 다수의 베인의 유입구로 유입되어 유출구로 배출됨으로써 유체와의 마찰을 최소화함과 동시에 펌프의 양정 및 효율을 극대화할 수 있는 원통형 베인을 포함하는 임펠러를 제공한다. 또한, 본 발명은 다수의 베인 중 어느 하나의 베인의 외주면과 어느 하나의 베인에 인접한 다른 하나의 베인의 외주면이 이격됨에 따라 유입구 이외로 흐르게 되는 유체와의 마찰 손실을 최소화하고 베이스판, 베인 및 유입구는 일체로 형성되어 구조적인 안정감을 줄 수 있는 원통형 베인을 포함하는 임펠러를 제공한다. According to the present invention, a plurality of hollow vanes are formed spirally in one direction from the center of the base plate, and the fluid flowing into the hollow housing is introduced into the inlet by the rotation of the impeller. The inlet of the plurality of vanes formed in the center of the inlet is discharged to the outlet to minimize the friction with the fluid and at the same time provide an impeller including a cylindrical vane that can maximize the pump lift and efficiency. In addition, the present invention minimizes the friction loss between the fluid flowing outside the inlet as the outer peripheral surface of any one of the plurality of vanes and the outer peripheral surface of the other vanes adjacent to one of the vanes and the base plate, vanes and The inlet provides an impeller comprising a cylindrical vane that is integrally formed to give structural stability.

The fluid pump of motor-driven

一种流体泵(10)，包括壳体(12)、电动机(18)、输送装置(28)、以及电子功率单元(34)，所述壳体具有抽吸接头(14)和压力接头(16)，在所述电动机中设有定子(20)和转子(22)，由所述转子旋转驱动的所述输送装置(28)具有分别与所述抽吸接头和所述压力接头连通的吸入口(30)和压力出口(32)，所述电子功率单元(34)用于位于所述壳体的隔壁(36)的后侧上的所述电动机，所述隔壁在所述转子附近并且横向于所述转子的旋转轴线(26)延伸。为了具有紧凑结构同时使冷却最优化，所述吸入口设置在距所述旋转轴线一高度(h S )处，所述高度小于定子与转子之间的环形间隙(24)的内半径(r R )，所述转子(22)具有通道(40)，所述通道优选地在距所述旋转轴线一恒定的高度(h D )处延伸，使得经由所述抽吸接头(14)引入的流体有一部分被所述环形间隙(24)约束并引导，并且所述隔壁使所述流体发生偏转，所述流体在经过所述转子的通道到达所述吸入口之前冷却所述隔壁。

Impeller pump

Изобретение относится к области турбонасосостроения. В лопастном насосе 2 корпус 1 выполнен с коническим участком, в котором размещено рабочее колесо 3 с втулкой 4. Предвключенная осевая ступень 5 с лопастями 6 установлена перед входом в лопастной насос 2 и имеет длину , определяемую соотношением: , где D н - наружный диаметр ступени, β лн - угол установки лопастей на входе на периферии. Повышаются кавитационные качества и кпд лопастного насоса при относительно невысоком напоре. 1 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 662 267 C2 (51) МПК F04D 9/04 (2006.01) F04D 1/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК F04D 9/04 (2006.01); F04D 1/04 (2006.01) (21)(22) Заявка: 2016148828, 12.12.2016 (24) Дата начала отсчета срока действия патента: Дата регистрации: 25.07.2018 (43) Дата публикации заявки: 14.06.2018 Бюл. № 17 (56) Список документов, цитированных в отчете о поиске: US 3522997, 04.08.1970. RU 2539934 (54) ЛОПАСТНОЙ НАСОС (57) Реферат: Изобретение относится к области турбонасосостроения. В лопастном насосе 2 корпус 1 выполнен с коническим участком, в котором размещено рабочее колесо 3 с втулкой 4. Предвключенная осевая ступень 5 с лопастями 6 установлена перед входом в лопастной насос 2 R U 2 6 6 2 2 6 7 Адрес для переписки: 141070, Московская обл., г. Королев, ул. Богомолова, 12, "Конструкторское бюро химического машиностроения имени А.М. Исаева"-филиал Федерального государственного унитарного предприятия "Государственный космический научно-производственный центр имени М.В. Хруничева" Стр.: 1 C1, 27.01.2015. RU 113794 U1, 27.02.2012. SU 1186830 A, 23.10.1985. C 2 C 2 (45) Опубликовано: 25.07.2018 Бюл. № 21 2 6 6 2 2 6 7 Приоритет(ы): (22) Дата подачи заявки: 12.12.2016 (73) Патентообладатель(и): Федеральное государственное унитарное предприятие "Государственный космический научно-производственный центр имени М.В. Хруничева" (RU) R U 12.12.2016 (72) Автор(ы): Позняк Михаил Иванович (RU), ...

Spiral glove model Pump,

본 고안은 나선형 글로브 펌프에 관한 것으로서, 유체의 흐르는 방향으로 입구와 출구가 일직선으로 나선운동을 하는 반원추나선형날개형태의 펌프회전차 큰 날개 유입구와 작은 날개 유출구가 동시작용 양수 순환 하는 펌프를 제공함에 목적이 있다. The present invention relates to a spiral globe pump, a semi-conical spiral wing type pump with the inlet and outlet in a spiral direction in the direction of fluid flow provides a pump in which the large wing inlet and the small wing outlet are simultaneously pumped circulation. There is a purpose. 이를 위하여 본체(1)]의 우방에는 흡입구(10a)를 설치하고, 좌방에는 송출구(10b)로 설치하고, 본체(1)의 상단 중심부에 반원추나선형날개형태의 펌프회전차(30)의 내벽경계선(1a)의 상방 큰 날개부분을 유입구(30a)로 하방 작은 날개부분을 유출구 (30c)로 등간격 배열 돌출형성 펌프회전차(30)로 설치하고, 내외면경계선(1a)(1B)내에 유체가 입력 큰 날개에는 강력하게 흡입 작은 날개와 동시작용 미끄럼 유동으로 송출 토록 설치하고 To this end, the suction port 10a is installed at the right side of the main body 1, and the discharge port 10b is installed at the left side of the main body 1, and the pump rotary wheel 30 of the semi-conical spiral shape is formed at the upper center of the main body 1. A large wing portion above the inner wall boundary line 1a is installed as the inlet port 30a, and a small wing portion below the outlet port 30c is provided as the equally spaced protrusion protrusion pump rotary car 30, and the inner and outer boundary lines 1a and 1B are provided. The fluid inside the big wing is strongly installed to be sent out by the suction small wing and synchronous sliding flow 나선형펌프회전차(30)의 지지를 위하여 펌프회전차(30)의 중심으로 관통설치되는 주축(50)을 본체(1)의 상단부에 지지용베어링(70a)을 설치 주축을 지지시키며, 본체(1)의 상단부에 전동기 지지용베어링(70b)을 설치 그 사이에 전동기(90)를 장착 된 것으로서, 작동 고양정에서 고효율로 양수순환하는 효과를 특징으로 하는 것이다. In order to support the helical pump rotor 30, the main shaft 50, which is installed through the center of the pump rotor 30, is installed at the upper end of the main body 1 to support the support shaft 70a. 1) The motor support bearing 70b is installed in the upper end of the motor 90 in between, and is characterized by the effect of pumping pumps with high efficiency in the operation high head.

Bilge pump arrangement having back flow preventer

Apparatus for providing liquid from a reservoir of liquid contained in a vehicle/vessel or other equipment, featuring a pump for pumping liquid having a pump housing outlet nozzle; and a back flow preventer assembly having an inlet end to couple to the outlet nozzle, having an outlet end to couple to an outlet hose for connecting to an outlet exiting a wall of a vehicle, vessel or other equipment, and having a duckbill-type check valve to provide liquid being pumped in one direction from the reservoir of the vehicle, vessel or other equipment to the outlet exiting the wall of the vehicle, vessel or other equipment via the outlet hose, and also configured to prevent residue liquid left in the outlet hose from flowing back into the pump and returning to the reservoir once the pump has completed pumping if the outlet exiting the wall of the vehicle, vessel or other equipment is above the outlet nozzle, so as to prevent on an on/off oscillation of the pump depending on the volume of residue liquid left in the outlet hose.

MONOBLOC PUMPING ASSEMBLY FOR CENTRIFUGAL PUMPS

L'ensemble comprend un arbre de transmission 4 pourvu d'un rotor 2 et d'une poulie 3, un élément de support 7 de l'arbre 4, deux rangées d'organes roulants 28 et une pluralité d'éléments d'étanchéité 8, 38 agencés pour établir un joint étanche à l'eau entre l'arbre 4 et l'élément 7, l'arbre 4 comprenant une surface 41 sur laquelle roulent les organes 28 et les éléments d'étanchéité 8, 38 comportant au moins une garniture 25 disposée entre le rotor 2 et les organes 28. Application aux pompes à eau installées dans des véhicules à moteurs. (CF DESSIN DANS BOPI) The assembly comprises a transmission shaft 4 provided with a rotor 2 and a pulley 3, a support element 7 for the shaft 4, two rows of rolling members 28 and a plurality of sealing elements 8 , 38 arranged to establish a watertight seal between the shaft 4 and the element 7, the shaft 4 comprising a surface 41 on which the members 28 roll and the sealing elements 8, 38 comprising at least one seal 25 disposed between the rotor 2 and the members 28. Application to water pumps installed in motor vehicles. (CF DRAWING IN BOPI)

Air-driven spiral flow constant-pressure pump

本发明公开了一种气体驱动螺旋流恒压泵，包括泵体、泵壳和叶轮，所述叶轮装配在叶轮旋转轴上，所述泵体设置在所述泵壳右端，泵体包括涡壳及设置在涡壳内的涡轮和涡轮旋转轴，所述涡轮装配在涡轮旋转轴上，所述涡轮旋转轴和叶轮旋转轴相连，所述涡壳上开设有进气口和出气口，所述进气口连接气源，并分别在所述进气口和出气口外加装进气口单向阀和出气口单向阀。本发明解决了水泵一直采用电机作为动力的问题，采用气体驱动螺旋流恒压泵，由于省去了电机的密封装置，故可将本发明的泵体直接放入液体介质中，不仅省去了电机成本，还降低了泵的质量，降低了生产制造成本，节约了能源。

PUMPING CELL FOR A POLYPHASIC EFFLUENT AND PUMP COMPRISING AT LEAST ONE OF SUCH CELLS

Turbo pump

In order to provide a high-head, large-delivery turbopump adapted for excellent suction performance and foreign matter passability by having characteristics of an inducer, axial flow vanes, and mixed flow vanes imparted together to centrifugal vanes, a progressively diameter-increased suction casing rear part (9b) has arranged therein an impeller (2) configured with two to four rotary vanes (13) wound around a hub (12), to define rotary channels (CA) having a vane outlet channel width (b 2) of 26% in proportion to a vane inlet outer circumference diameter (d 1 0), the rotary vanes being each respectively configured as a collision-less connection of an upstream axial-flow screw part (13a) provided with an inducer part (13a1) extending into a suction fluid path of a suction casing front part (9a) at a vane inlet angle (.beta. 1) of 14°, an intermediate mixed-flow screw part (13b) , and a downstream centrifugal screw part (13c).

Bladed centrifugal pump impeller - has forward-curved blades circularly contoured to form constant depth reducing width passages to periphery

The centrifugal pump with a central inlet has an impeller in a spiral housing. The impeller has a main disc (31) with a hub (32) secured on the pump shaft and a number of equi-spaced forward-curved blades (33) axially extending from at least one side of the disc. Each blade has constant axial thickness and a forward side part which faces the hub and a rearward side, to define a space (38) between adjacent blades extending from the hub region to the disc periphery. These blade sides have circular contours with different radii and centres so that the space (38) has constant depth but reducing width from hub to periphery.

CIRCULATION PUMP

MULTI-STAGE PUMP PARTICULARLY FOR PUMPING A MULTIPHASIC FLUID.

Sealless Rotodynamic Pump

A sealless centrifugal blood pump (10) is provided in which a rotatable impeller (64) is supported in a pump housing (12) by fluid bearings (30, 182) during operation. Rotational movement of the impeller (64) is accomplished with an inverted motor (38) for magnetically driving of the impeller (64) and maintenance of the axial running position of the impeller (64) relative to the housing ( 12). In an alternative embodiment, the axis of the rotor housing (18) is radially displaced relative to the axes of drive element (126) of the motor and the motor housing (130).

Seat ventilation device for a seat system, in particular of a motor vehicle

本发明涉及一种用于特别是汽车的座椅系统(12)的座椅通风装置(10)，所述座椅通风装置具有数个用于输送空气的径流式风扇(14a‑c)以及至少一个软垫(16)，所述软垫具有泡沫垫(22)以及布置在所述泡沫垫之上或之前且可被所述径流式风扇(14a‑c)所输送的所述空气穿过的通风层(24)。所述径流式风扇(14a‑c)至少部分地容置在所述泡沫垫(22)中并且布置在所述通风层(24)下方或后面。

Pump assembly, in particular for supplying a mechanical seal assembly

The invention relates to a pump assembly, in particular a slide ring seal assembly, for supplying a fluid, in particular to a slide ring seal (2a, 2b), comprising precisely one drive (11) with a driveshaft (24), a first axial pump (21) which pumps the fluid in the axial direction (X-X) of the driveshaft, a second axial pump (22) which pumps the fluid in the axial direction of the driveshaft, and a radial pump (23) which pumps the fluid in the radial direction (R) of the driveshaft, wherein the first axial pump (21) and the second axial pump (22) are arranged upstream of the radial pump (23) in the flow direction (B) of the fluid through the pump assembly, and the drive (11) drives the first axial pump (21), the second axial pump (22), and the radial pump (23) simultaneously.

Underwater pump

An axial or oblique flow type underwater pump improved to reduce the load on the connection to a discharge tube due to vibration in operation. A motor casing (16) is formed integrally with a pump casing coaxially with the central axis of the lower opening (15) of the pump casing with the pump casing (11) formed in a bent tube. The motor casing has an end face (17) opened externally of the pump casing. A motor (18) is provided in the motor casing, and a guide blade unit (29), an impeller (34) and an intake piece (35) are sequentially disposed under the motor casing (16). <IMAGE>