Insulating fluid system for protecting submersible electric moto

Details Insulating fluid system for protecting submersible electric moto Insulating fluid system for protecting submersible electric moto

1979-08-22

1981-04-14

Budd, Mark O.

Electrical generator or motor structure

Dynamoelectric

Rotary

H02K 510

Patent

active

042622263

ABSTRACT:
A method and apparatus are provided for protecting a submersible electric motor from failure due to contamination of the windings of such motor by the fluids surrounding the motor in its submerged environment. A conduit is provided extending from a pressurized source of insulating fluid to the housing of the electric motor immersed in fluids to be pumped. Valve means are provided between the lower end of the tubing and the interior of the motor housing to permit the entry of pressurized lubricating fluid into the motor housing to maintain the internal pressure in the motor housing at a level on the order of 100 p.s.i., or a determinable rate above the pressure of the surrounding fluids. In accordance with a modification of this invention, the electrical cable by which the submerged motor is energized, is disposed within the conduit filled with insulating fluid.

REFERENCES:
patent: 1610726 (1926-12-01), Arutunoff
patent: 2080678 (1937-05-01), Van Horn
patent: 2291248 (1942-07-01), Myers
patent: 2305648 (1942-12-01), Van Horn
patent: 2325930 (1943-08-01), Auigdor
patent: 2404783 (1946-07-01), Blom
patent: 2492141 (1949-12-01), Gaylord
patent: 2740059 (1956-03-01), Conery
patent: 2862122 (1958-11-01), Courtin et al.
patent: 2938131 (1960-05-01), Maynard
patent: 3688140 (1972-08-01), Schaefer

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