Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1993-09-07
1995-04-04
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 52, 251349, 417414, F04D 1308, F04B 1900
Patent
active
054040612
ABSTRACT:
A motor oil-filled protector device for use with an electric submergible pump motor, includes a tubular extension to inhibit contaminated fluid from contacting an internal pressure relief valve. A motor oil pressure relief valve within the protector has an intake in fluidic communication with at least one motor oil-filled expandable chamber and has a discharge in fluidic communication with a fluid-filled section of the housing. Over a period of time, wellbore fluids tend to leak into and displace motor oil within the fluid-filled section. A tubular extension is connected to the discharge of the pressure relief valve and extends into a lower portion of the fluid filled section. When motor oil is discharged from the pressure relief valve, such motor oil will tend to stay within the tubular extension, because the oil is lighter than the wellbore fluids, and thereby inhibit the wellbore fluids from contacting and possibly harming the operation of the pressure relief valve.
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Camco International Inc.
Haszko D. R.
Stephan Steven L.
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