LEAK DETECTION OF STATOR LIQUID COOLING SYSTEM
First Claim
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.
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Accused Products
Abstract
A safe, fast and accurate method of detecting a leak locale of a stator liquid cooling system especially in a plurality of stator windings in a liquid cooled generator is provided. The method includes the step of introducing a non-corrosive compatible gas or its air mixture having an infrared absorption spectrum into the plurality of stator windings of the liquid cooled generator and detecting leaks through the use of an infrared detection system. The infrared detection system includes an imaging component adapted to detect radiation at the infrared absorption spectrum of the non-corrosive gas or its air mixture. The imaging component is provided with a filter that filters wavelengths in a range encompassing the infrared absorption spectrum of the compatible, non-corrosive gas. The imaging component displays an image of the tracer gas leaking from stator liquid cooling system of the generator.
9 Citations
20 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for detecting a gas leak locale of a stator liquid cooling system in a liquid cooled generator, the system comprising:
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a source of tracer gas; a subsystem for introducing tracer gas into a plurality of stator winding after it is disconnected from the stator liquid cooling system; and an infrared imaging device adapted to display an image of the tracer gas from a distance. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for detecting a leak locale of a liquid coolant from a stator liquid cooling system in a generator, the method comprising:
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disposing an infrared imaging system having a detector response of between 3 μ
m to 5 μ
m with a field of view encompassing at least a portion of the generator;disconnecting a plurality of stator windings from the stator liquid cooling system; introducing a tracer gas into the plurality of stator windings, the tracer gas having an absorption spectrum of between 3 μ
m and 5 μ
m;filtering radiation received by the infrared imaging system in the absorption spectrum of the tracer gas; and displaying an image of tracer gas leaking from the plurality of stator windings on an infrared imaging system at a distance. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification