Apparatus for monitoring hydrogen gas leakage into the stator co

Details Apparatus for monitoring hydrogen gas leakage into the stator co Apparatus for monitoring hydrogen gas leakage into the stator co

1986-06-20

1988-08-23

Lall, Parshotam S.

Boots, shoes, and leggings

364557, 364558, 340605, 73 405R, 310 52, 310 53, G06C 1130, H02K 900

Patent

active

047665572

ABSTRACT:
Apparatus which provides an indication of gas leakage from the interior of an electric generator into a closed circuit water-cooling system for the generator's stator coils. The closed circuit water-cooling system includes a water tank for degasification with the closed volume above the water level being occupied by a gas of the same type as the generator interior. Sensors are provided for obtaining indications of pressure, temperature and volume of the gas, and from these indications the number of moles of gas in the tank are calculated in periodic time increments. The gas is maintained within certain pressure limits by the addition or venting of gas, and if an addition or venting has taken place from one calculation to a next, a projected value for the number of moles is calculated after the change, had the change not occurred. The difference between the actual and projected value is then added onto subsequent calculated values to obtain a history of gas leakage.

REFERENCES:
patent: 3916445 (1975-10-01), Alliston et al.

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