Method of testing a gas cooled electrical generator

Details Method of testing a gas cooled electrical generator Method of testing a gas cooled electrical generator

1992-10-29

1995-01-10

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

G01M 332

Patent

active

053796322

ABSTRACT:
A method of testing a gas-cooled electrical generator (12) for leakage of pressurized coolant gas includes steps of communicating a container (14) with pressurized coolant gas that is within the generator (12); sealing the container (14) once the container (14) becomes filled with coolant gas at a pressure which is equal to a pressure within the sealed space; and subsequently comparing the pressure in the sealed space with the pressure in the sealed container (14), whereby a lower pressure in the sealed space will indicate coolant leakage. Preferably, the container (14) is insulated to preserve the coolant gas at the temperature it was at within the generator (12), for accurate measurements. In contrast to previously known methods, this method can be performed while the generator is operational, resulting in improved and more realistic detection and measurement of leakage.

REFERENCES:
patent: 3122668 (1964-02-01), Cuny
Yu N. Zhigulin, Leak Tests on Large Vessels, Measurement Techniques, vol. 18, No. 8, pp. 1206-1208, 1976.

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