Control method and device for defrosting system of air intake filter element of compressor

Abstract

The invention relates to the field of compressor application and discloses a control method and device of a compressor air inlet filter element defrosting system. The method comprises the steps that the dew point temperature of the environment where a compressor is placed is determined; the average wall temperature of each row of an air inlet filter element of the compressor is collected, N average wall temperature values are obtained, and N is a positive integer; whether each of the N average wall temperature values is smaller than the dew point temperature is judged, then M wall temperature values smaller than the dew point temperature are determined from the N average wall temperature values, and M is a positive integer smaller than or equal to N; L average wall temperature values with the highest difference with the dew point temperature are determined from the M wall temperature values, each wall temperature value in the L average wall temperature values is smaller than preset temperature, and L is a positive integer smaller than or equal to M; and L rows of air inlet filter elements corresponding to the L average wall temperature values are subjected to defrosting. The technical effect that defrosting control is accurate is achieved.

Description

technical field [0001] The invention relates to the application field of compressors, in particular to a control method and device for a defrosting system of an intake filter element of a compressor. Background technique [0002] With the continuous development of my country's economy, the demand for natural gas is increasing day by day. In the natural gas pipeline transportation industry, gas turbines are widely used as the driving equipment for large compressors. In recent years, through research on the operation of compressor units, it has been found that there is a problem of frosting of the intake filter element of compressor units in cold winter areas. On the one hand, the intake pressure decreases and the pressure loss increases, which reduces the power and efficiency of the gas turbine; on the other hand, once the pressure loss is too large, it will start to shut down when the alarm value is reached, seriously affecting the normal and safe operation of the unit. Th...

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Problems solved by technology

[0004] The embodiment of the present invention provides a method and device for controlling the defrosting system of the air intake filter element of the compressor, so as to solve the technical problem in the prior art that the control of the start-up conditions of the defrosting system of the compressor is not accurate enough

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