Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1992-11-18
1994-11-22
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
4174233, 417414, H02K 510, H02K 512
Patent
active
053672143
ABSTRACT:
A protective device for a fluid-filled submersible electric motor powering a downhole pump in a well bore disposed between the motor and pump and forming a sealed assembly with the motor is described. The upper interior portion of the device is sealed to preclude the entry of well fluid and a vent near the lower end of its housing accommodates equalization of pressure between the interior of the device and the well bore with minimum contamination of the motor fluid. The protective device embodies a sealed chamber filled with motor fluid that communicates with the motor first by moving upward from a variable capacity chamber through an internal passageway and then downward through an annular passageway to the motor. An improved assembly for housing and orienting the operational parts of the device is also described.
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Centrilift brochure: "The system for higher-efficiency, higher profit pumping" (no date).
Trico Submersible System Composite Catalog (1991).
Centrilift Hughes: "The Latest Technology in Submersible Motor Protection" (1985).
Reda: Composite Products catalog (1989).
Reda: "System 90 Modular Protector for Submergible System" (1990).
Kirk, Jr. John R.
Stephan Steven L.
To E.
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