Abstract:
A pump (15) for transferring liquefied gas, comprising a pump body (70, 80, 100) and a wheel (41) having blades (45) rotatablely mounted inside the pump body (70, 80, 100), the pump (15) has magnets (42) arranged at the periphery of the wheel (41), the pump (15) further including a field winding (120) arranged to drive the wheel (41) in rotation by means of the magnets (42).
Abstract:
An electric machine is presented. The electric machine includes a hollow rotor; and a stator disposed within the hollow rotor, the stator defining a flow channel. The hollow rotor includes a first end portion defining a fluid inlet, a second end portion defining a fluid outlet; the fluid inlet, the fluid outlet, and the flow channel of the stator being configured to allow passage of a fluid from the fluid inlet to the fluid outlet via the flow channel; and wherein the hollow rotor is characterized by a largest cross-sectional area of hollow rotor, and wherein the flow channel is characterized by a smallest cross-sectional area of the flow channel, wherein the smallest cross-sectional area of the flow channel is at least about 25% of the largest cross-sectional area of the hollow rotor. An electric fluid pump and a power generation system are also presented.
Abstract:
Die Erfindung betrifft eine Nassläuferpumpe mit einem Axialflussmotor, der einen Stator (110, 112, 114), einen Spalttopf (116) und einen Rotor (122, 124) aufweist, wobei der Stator und der Spalttopf in einem Trockenbereich und der Rotor an einen Impeller (128) in einem Nassbereich angeordnet sind, mit einer Einlassleitung (134, 156) für ein durch den Impeller zu förderndes Fluid (108), wobei die Einlassleitung in axialer Richtung durch den Stator und den Spalttopf hindurch verläuft, und mit einer Leistungselektronik (120; 136) zur Ansteuerung des Stators, wobei die Leistungselektronik im Inneren des zwischen dem Stator und dem Spalttopf umschriebenen Raums angeordnet ist.
Abstract:
The invention relates to a rotor-dynamic, centrifugal pump for use in pumping of hydrocarbons and water in a downhole application. The pump is designed with a plurality of steps arranged in the longitudinal direction and adapted to be set in a well, wherein each step consists of a motor and one or more pump stages, which include a diffuser and a rotatable impeller for radially accelerating a liquid, which diffuser is arranged to conduct the liquid to a higher level, and thus pump the liquid upwards in the well. The impellers in each step are driven by a common motor, and the motor is configured as a ring motor, the liquid being able to flow in the centre of the motor.
Abstract:
An axial flow pump (10) is presented which includes a housing (1) with an inlet (2) and outlet (3) and a magnetically active rotor (5) in the housing which is provided with a passage (6) in the interior and with at least one spiral-shaped vane (7) in the passage, wherein the pitch of the vane (7) varies in the axial direction. The axial flow pump (10) furthermore includes an electromagnetic drive (4, 8) with a stator (8) which is arranged at the housing and cooperates with a magnetically active rotor.
Abstract:
Eine Pumpe hat eine Pumpkammer, in der ein Flügelrad (15; 15') und ein mit dem Flügelrad verbundener Rotor (21, 22) einer elektrischen Maschine angeordnet sind. Ein Strömungsweg (20) verläuft vom Einlass (6) zum Auslass (14) der Pumpkammer durch einen zentralen Durchgang des Rotors (21, 22).
Abstract:
Fluid pump systems for use in an open loop or closed loop system driven by a motor that does not impede the flow of fluid being pumped are disclosed. A first fluid pump system includes an in-line direct drive motor. The rotor (46, 48) and stator (44) of the motor are positioned about an axis of fluid flow so as not to impede the fluid flow. A second fluid pump system includes an off-line indirect drive motor. The fluid being pumped is driven by an impeller (56) coupled to the inside wall surface of a rotatable member (50) and the outside wall surface of the rotatable member is driven by a motor external to the fluid flow. The motor parts (46, 48) are fully integrated with the pump rotor (56) to drive the pump, therein reducing the number of component requirements, and increasing pump efficiency.
Abstract:
A blood pump (500) preferably has a magnetically suspended rotor (502) that rotates within a housing (506). The rotor (502) may rotate about a stator (504) disposed within the housing. Radial magnetic bearings (560) may be defined within a stator (504) and a rotor (502) in order to suspend the rotor (502). The radial magnetic bearings (560) may be passive magnetic bearings that include permanent magnets disposed within the stator and the rotor or active magnetic bearings. The pump (500) may further include an axial magnetic bearing (562) that may be either a passive or an active magnetic bearing. A motor stator (508) that drives the rotor may be disposed within the housing in order to more easily dissipate heat generated by the motor stator (508). A primary flow path (552) is defined between the stator (504) and the rotor (502), and a secondary flow path (552) is defined between the stator (504) and the rotor (502). Preferably, a substantial majority of blood passes through the primary flow path (550). The secondary flow path (552) is large enough so that it provides adequate flushing of the secondary flow path (552) while being small enough to permit efficient operation of the radial magnet bearings (560) across the secondary path (552).
Abstract:
A blood pump (500) preferably has a magnetically suspended rotor (502) that rotates within a housing (506). The rotor (502) may rotate about a stator (504) disposed within the housing. Radial magnetic bearings (560) may be defined within a stator (504) and a rotor (502) in order to suspend the rotor (502). The radial magnetic bearings (560) may be passive magnetic bearings that include permanent magnets disposed within the stator and the rotor or active magnetic bearings. The pump (500) may further include an axial magnetic bearing (562) that may be either a passive or an active magnetic bearing. A motor stator (508) that drives the rotor may be disposed within the housing in order to more easily dissipate heat generated by the motor stator (508). A primary flow path (552) is defined between the stator (504) and the rotor (502), and a secondary flow path (552) is defined between the stator (504) and the rotor (502). Preferably, a substantial majority of blood passes through the primary flow path (550). The secondary flow path (552) is large enough so that it provides adequate flushing of the secondary flow path (552) while being small enough to permit efficient operation of the radial magnet bearings (560) across the secondary path (552).