Method and apparatus for detecting defects in a water cooling sy

Details Method and apparatus for detecting defects in a water cooling sy Method and apparatus for detecting defects in a water cooling sy

1980-11-25

1983-02-15

Kazenske, Edward R.

Measuring and testing

With fluid pressure

Leakage

73 407, G01M 322

Patent

active

043733794

ABSTRACT:
Presented are a method and apparatus for detecting defect in the water cooling system, e.g. cracking, of a hydrogen-cooled dynamic electric machine. The stator core of the hydrogen-cooled dynamic electric machine is cooled from its inside by cooling water circulated therethrough. When a defect such as crack is caused in the water cooling system, the hydrogen gas leaks into the cooling water. The hydrogen gas is then conveyed by the cooling water to a cooling water supply tank to which the water is recirculated and is accumulated in the upper free space in the water supply tank. Carrier air is forcibly blown into the upper free space of the water supply pipe to prevent the hydrogen concentration from being increased to a dangerous level of explosion threshold. The hydrogen concentration is measured in this state and the defect in the water cooling system is known from the measured concentration of the hydrogen gas.

REFERENCES:
patent: 2675493 (1954-04-01), Grobel

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