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Device for the determination of the quantitative composition of gases

  • US 4,764,344 A
  • Filed: 09/30/1985
  • Issued: 08/16/1988
  • Est. Priority Date: 10/25/1984
  • Status: Expired due to Fees
First Claim
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1. In an apparatus for the determination of the quantitative composition of gases which are dissolved in insulating oil of an oil-insulated electrical apparatus, including a device for removing insulating oil samples from an oil-insulated electrical apparatus, a gas collecting vessel, a gas extraction section constructed and arranged for extraction of gases from the insulating oil samples supplied by the removing device by means of reduced pressure and for conveying extracted gases to the gas collecting vessel, and a gas chromatograph positioned and arranged for analysis of gases from the gas collecting vessel, the improvement comprising:

  • a peristaltic pump whose inlet is connected via the gas extraction section to the removing device;

    means for selectively connecting an outlet of the peristaltic pump to either a vent to outside air or to an inlet of the gas collecting vessel; and

    a bypass pipe connected between the inlet of the pump and the inlet of the gas collecting vessel, said bypass pipe including a shut off valve.

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