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US 12,480,497 B2Granted
Modular cryogenic permanent magnet electrical motors and generators for submerged motor pumps and turbines and related systems and methods
AssigneeFlowserve US Company
InventorsDennis W. Chalmers, Mina M. Botrous, Ed Ortiz Pedroza
Life of this patent
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Abstract
Motors, pumps, generators, fluid-handling devices, and related systems or methods may include a motor assembly comprising a motor housing and a motor comprising a rotor and a stator contained in the motor housing. The motor further comprises an alternating current medium voltage synchronous motor.
Claims20
A motor assembly for use in fluid handling device, comprising:
- a motor housing;
- a motor comprising a rotor and a stator contained in the motor housing, the motor comprising an alternating current medium voltage synchronous motor, the rotor configured to rotate a shaft connected to impellers of the fluid handling device while the shaft moves axially relative to the rotor during operation of the fluid handling device;
- wherein the shaft may move axially independently of the rotor;
- a first bearing assembly coupled to a first end of the motor housing;
- and a second bearing assembly coupled to a second end of the motor housing and positioned at least partially within the motor housing.
2 more elements
A submergible cryogenic pump comprising:
- fluid handling stages comprising impellers mounted to a shaft at least partially encompassed by one or more diffusers;
- and
- a motor assembly for transferring force to and/or receiving force from the fluid handling stages via the shaft, the motor assembly comprising:
- a motor housing;
- and
- a motor comprising a rotor and a stator contained in the motor housing, the rotor configured to rotate the shaft while the shaft moves axially relative to the rotor,
- wherein the shaft may move axially independently of the rotor;
- the motor further comprising an alternating current medium voltage synchronous motor configured to be driven at 1,000 Volts to 15,000 Volts and at a rotational speed between 2,000 RPM and 10,000 RPM.
5 more elements
A method of transferring electrical energy between a motor assembly and a fluid handling device, the method comprising:
- moving a plurality of fluid handling stages comprising impellers mounted to a shaft at least partially within one or more diffusers;
- supporting the shaft with a first bearing assembly comprising a radial bearing and a second bearing assembly comprising at least two angled bearings for supporting loads in both axial directions of the shaft;
- transferring force to and/or receiving force from the plurality of fluid handling stages via the shaft with a motor assembly comprising an alternating current medium voltage synchronous motor and moving the shaft in an axial direction relative to the motor assembly during operation,
- wherein the shaft may move axially independently of the rotor.
1 more element
Dependencies are inferred from the claim text.