Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1998-03-12
2000-07-18
Ramirez, Nestor
Electrical generator or motor structure
Dynamoelectric
Rotary
310 87, 310 91, 384119, 384215, 384218, 384219, 277647, 277555, 277530, 277438, 417365, 4174233, 4174241, H02K 516, F04D 1308
Patent
active
060911751
ABSTRACT:
The invention provides a submersible pumping system which includes a motor containing self-centering rotor bearing assemblies. Each rotor bearing assembly in accordance with the present invention includes a sleeve, a journal, and at least two seals. The journal is preferably disposed about the sleeve which is keyed to the power transmission shaft of the motor. The journal has a peripheral surface which is configured to have at least two circumferential support regions which are spaced apart from one another. Each of these circumferential support regions supports a corresponding seal. Each seal includes an interface member and an activating member. When in place in a rotor section of a submersible pump motor, the seals frictionally engage the inner surface of the stator and exert a centering force against the journal and thus against the bearing sleeve and the power transmission shaft. The seals also exert a force against the inner surface of the stator which prevents rotation of the journal when the power transmission shaft is rotating.
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Camco International Inc.
Nguyen Tran N
Ramirez Nestor
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