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Gas control technology of largeflow pipe

WANG Yong, XIE Yudong   

  1. School of Mechanical Engineering, Shandong University, Jinan 250061, China
  • Received:2009-01-20 Revised:1900-01-01 Online:2009-04-16 Published:2009-04-16

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Abstract:

How to stabilize the pressure of largeflow mixed gas is a key technique in combined cycle power plant of a steel mill. The fluctuation mechanism of mixed gas was discussed and an active control strategy was presented. Then, the dead band of a control valve and its adverse effects were analyzed and a compensation method for reducing the dead band was investigated. The results show that the dead band compensation can be realized by adding dither signals to the actuator of control valve and the active control method can attenuate the pressure fluctuation of mixed gas effectively.

Key words: gas flow fluctuation, active control, dead band compensation, combined cycle power plant

CLC Number: 

  • TH137
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