A kind of intelligent combustion system using restriction orifice

A kind of intelligent combustion system using restriction orifice

  • CN 104,373,953 B
  • Filed: 11/14/2014
  • Issued: 09/07/2018
  • Est. Priority Date: 11/14/2014
  • Status: Active Grant
First Claim
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1. a kind of intelligent combustion system using restriction orifice, it is characterised in that:

  • The system is provided with heat-treatment furnace, the heatTreatment furnace is provided with burner, and the pipelines of the burner both sides is provided with restriction orifice, the pipeline include blast main,Main gas pipe road, igniting air pipeline, gas for ignition pipeline, are correspondingly arranged on primary air restriction orifice, main coal gas current limliting respectivelyOrifice plate, igniting air restriction orifice, gas for ignition restriction orifice, when choosing restriction orifice, first according to the heat of current bringing-up sectionLoad gauge calculates total gas quantity of the bringing-up section, then calculates the gas quantity V and restriction orifice aperture d needed for every burner,And then restriction orifice pressure differential deltap P is calculated, finally, whether inverse pressure drop meets the effect of current limliting, when choosing restriction orifice aperture dThe pressure P2 after restriction orifice is set to be equal to critical pressure Pc or be slightly less than critical pressure Pc, the blast main passes through airRotary plug reversing valve is connected with exhaust piping, and the main gas pipe road and gas for ignition pipeline are provided with fast cut valve, described to cut soonValve is located at the outside of main coal gas restriction orifice and gas for ignition restriction orifice, burns for controlling gas and being reached by restriction orificeDevice, the main gas pipe road and exhaust piping are both provided with flow control valve, and the restriction orifice is discount vibram outlet concentric orifice orifice plate,The both sides that the main gas pipe road is located at heat-treatment furnace are connected with nitrogen purge pipe, and the nitrogen purge pipe is provided with cuts soonValve.

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