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Method for detecting the occurrence of surge in a centrifugal compressor by detecting the change in the mass flow rate
Method for detecting the occurrence of surge in a centrifugal compressor by detecting the change in the mass flow rate
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机译:通过检测质量流量的变化来检测离心压缩机中喘振的发生的方法
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摘要
A method for controlling working fluid surge in a centrifugal compressor. According to the method, surge detection is accomplished by calculating the change in the compressible fluid mass flow rate that accompanies surge in a compressor, the compressor having means for sensing a first fluid temperature, means for sensing a first pressure, means for sensing a second pressure, and means for measuring current drawn by a compressor prime mover, the method comprising the steps of: calculating the time rate of change of the first fluid temperature; calculating the time rate of change of the first fluid pressure; calculating the time rate of change of the second fluid pressure; calculating the time rate of change of current drawn by the compressor prime mover; calculating the mass flow rate by combining the calculated rates of change; and comparing the calculated mass flow rate to a predetermined acceptable mass flow rate to determine if surge is present.
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