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Cooling system for a multistage electric motor

An electric motor, motor technology, applied in electric components, components of pumping devices for elastic fluids, cooling/ventilation devices, etc., can solve problems such as early winding failures, motor winding changes, etc.

Active Publication Date: 2012-12-12
FLOWSERVE MANAGEMENT CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This may cause motor windings to change and may cause early winding failure

Method used

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  • Cooling system for a multistage electric motor
  • Cooling system for a multistage electric motor
  • Cooling system for a multistage electric motor

Examples

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Embodiment Construction

[0020] The embodiments shown in the drawings are illustrative in nature and are not intended to limit the embodiments defined by the claims. In addition, various aspects of the drawings and embodiments will be more apparent and understandable through the following detailed description.

[0021] It should be noted that terms such as "generally," "common," and "typically," when used herein, are not intended to limit the scope of the claimed embodiments or to imply that certain features are essential to the claimed embodiments. Critical, major, or even important in terms of structure or function. Rather, these terms merely denote specific aspects of the embodiments or highlight alternative or additional features that may or may not be used in a particular embodiment.

[0022] For purposes of describing and defining the present invention herein, it should be noted that the terms "substantially," "substantially," and "approximately" are used herein to denote inherent degree of un...

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Abstract

A multistage electric motor includes a plurality of motor stages connected in series, each motor stage comprising a stator, and a rotor; a plurality of cooling fluid paths, each cooling fluid path forming a recirculating loop independent of the other cooling fluid paths, each cooling fluid path in communication with the stator of one of motor stages; and a cooling fluid flowing through each cooling fluid path, the cooling fluid removing heat from the stator of each motor stage. A submersible pump including the multistage electric motor, and a method of cooling the multistage electric motor are also described.

Description

technical field [0001] Embodiments of the present invention generally relate to cooling systems for submersible pump systems, and more particularly, the present invention relates to submersible pump systems including submersible multi-stage motors with independent cooling systems. Background technique [0002] Submersible pumps are typically driven by submersible motors. In general, submersible pumps can be operated in various applications where both the pump and motor are completely submerged in the well. Submersible motors for submersible pump systems have a stator that drives a rotor to turn, thereby generating heat during operation. The heat generated must be removed from the motor to prevent damage to the motor windings and to extend the life of the motor. Submersible motors may be filled with a motor cooling fluid that transfers heat from within the motor to the well fluid outside the motor. The motor may include a cooling system that recirculates and cools the moto...

Claims

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Application Information

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IPC IPC(8): H02K16/00H02K9/19H02K5/132
CPCE21B43/128H02K16/00F04D29/588F04D13/08F04D29/5806F04D13/10H02K5/132H02K9/19F04D1/06
Inventor B·G·施伦霍夫A·H·坦克-朗格瑙C·J·鲍维斯T·阿尔伯斯
Owner FLOWSERVE MANAGEMENT CO