Measuring and testing – Gas content of a liquid or a solid – By vibration
Patent
1982-07-20
1984-04-24
Kreitman, Stephen A.
Measuring and testing
Gas content of a liquid or a solid
By vibration
G01N 710
Patent
active
044440405
ABSTRACT:
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 influence 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 circulating the gas in the circulation passage.
REFERENCES:
patent: 3405551 (1968-10-01), Halasz
patent: 4112737 (1978-09-01), Morgan
patent: 4236404 (1980-12-01), Ketchum et al.
patent: 4402211 (1983-09-01), Sugawara et al.
Gange Toshihiko
Mori Etsunori
Sakai Seiichi
Shiono Shigeo
Sugawara Katuo
Hitachi , Ltd.
Kreitman Stephen A.
Shikoku Electric Power Company, Inc.
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