Automatic oil draining system for generators

Details Automatic oil draining system for generators Automatic oil draining system for generators

1988-12-30

1989-11-28

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

137204, 310 90, 384479, H02K 924, H02K 5136

Patent

active

048839957

ABSTRACT:
A fluid draining system for an electric power generator of the type containing a cooling gas under pressure includes oil-pressurized shaft seals adjacent the rotor bearings, to prevent the pressurized gas from escaping through the bearings. Oil is at a pressure higher than the pressurized gas and means are provided to automatically drain leakage oil from the bottom of the generator. The automatic drain includes a differential pressure valve with its first inlet connected to the drain in the bottom of the generator, its second inlet connected to the gas pressure within the generator, and its outlet completing the drain path for the system when the differential pressure of the first inlet exceeds that of the second inlet by a preset amount.

REFERENCES:
patent: 2537224 (1951-01-01), Lansdale et al.
patent: 2675493 (1954-04-01), Grobel
patent: 3122668 (1964-02-01), Cuny
patent: 3240967 (1966-03-01), Kratchew

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