G - Physics – 01 – N
Patent
G - Physics
01
N
73/93
G01N 33/28 (2006.01)
Patent
CA 1173271
ABSTRACT OF THE DISCLOSURE In an apparatus for detecting gas components in the oil in an oil-filled device, which comprises a gas-storing chamber being provided at an oil-filled device containing an insulating oil through a gas- permeating material capable of separating gas components from the insulating oil, a gas calibration tube being provided at the gas-storing chamber through a switch valve, and a gas chromatographic device connected to the gas calibration tube through the switch valve, any influ- ence of gas components in a subatmospheric pressure is eliminated and exact concentrations of gas components are detected by providing at least one stirring mixer having at least one throttle perforation in a carrier gas passage for supplying the gas components from the gas calibration tube to the gas chromatographic device at the upstream side of a gas separation column of the gas chromatographic device, or by proving a circulation passage between the gas storing chamber and the gas calibration tube, a valve capable of being exposed to the atmosphere at the circulation passage, and a gas circulation unit at the circulation passage for circula- ting the gas in the circulation passage.
407795
Gange Toshihiko
Mori Etsunori
Sakai Seiichi
Shiono Shigeo
Sugawara Katuo
Hitachi Ltd.
Kirby Eades Gale Baker
Shikoku Electric Power Company Incorporated
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