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Leak detection of stator liquid cooling system

  • US 9,097,657 B2
  • Filed: 07/23/2013
  • Issued: 08/04/2015
  • Est. Priority Date: 07/23/2013
  • Status: Active Grant
First Claim
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1. An apparatus for detecting a leak locale in stator liquid cooling system of a liquid cooled generator, the apparatus comprising:

  • a subsystem for introducing a pressurized non-corrosive gas having an infrared absorption spectrum into a plurality of stator windings of the stator liquid cooling system; and

    an imaging component adapted to detect radiation at the infrared absorption spectrum of the pressurized non-corrosive gas, the imaging component having a filter that filters wavelengths in a range encompassing the infrared absorption spectrum of the pressurized non-corrosive gas, wherein the subsystem for introducing the pressurized non-corrosive gas comprises means for draining liquid coolant from the plurality of stator windings;

    means for drying the plurality of stator windings with air; and

    means for introducing a mixture of air and carbon dioxide at a predetermined temperature, wherein the mixture of air and carbon dioxide has a content ratio of carbon dioxide of between 0.1% to 100%.

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