| 摘要 |
A leakage measuring apparatus and method is herein provided for a gas-cooled, liquid-cooled dynamoelectric machine's cooling system. The apparatus comprises: a liquid coolant reservoir; an integrating vessel; a flow restriction means such as an orifice, orifice covered by a porous membrane, or a needle valve; a pressure relief valve which is hydraulically connected between the liquid coolant reservoir and the integrating vessel; and means for gaging the pressure within the integrating vessel, said pressure indicative of the amount of leakage within the cooling system. The effect obtained by the gaging of the pressure in the integrating vessel is: (1) the integration of the pressure surges resulting from the intermittent activation of the pressure relief valve; and (2) the amplification, for gaging purposes, of the pressure changes in the reservoir, these changes caused by the existence of leakage.
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