Pressure measuring blocking-proof method and device

Pressure measuring blocking-proof method and device

CN
  • CN 101,435,729 B
  • Filed: 12/06/1999
  • Issued: 11/24/2010
  • Est. Priority Date: 12/06/1999
  • Status: Active Grant
First Claim
Patent Images

1. pressure measurement anti-blockage method may further comprise the steps:

  • Measuring fairlead with one passes in the stove for the treatment of pressure measurement;

    The outer end of this measurement fairlead is connected a reducing adjusting sample valve with thief hole;

    To also be installed in this reducing in order to the flowmeter of measurement gas flow and pressure and tensimeter and regulate on the pipeline that sample valve is connected;

    To be installed in order to the flow control valve of relying on oneself of adjusting gas flow in the pipeline with this reducing and regulate on the pipeline that sample valve is connected, the flow of the gas in the described measurement fairlead of this Flux Valve Control of relying on oneself makes it not to be subjected to the variation of gaging pressure and changes;

    The gas of adjusting the thief hole place of described reducing adjusting sample valve passes through the cross section, this gas is equated with the air resistance of measuring fairlead by the gas dynamic pressure of section, thereby the gaging pressure at thief hole place is equated with the internal pressure of stove;

    Adopt the pressure unit measurement described reducing of flowing through to regulate the pressure of gas at the thief hole place of sample valve.

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