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针对长输管道压气站压缩机组进气滤芯冬季结霜导致进气压损变大的问题,结合站场现有的除霜措施,优化原有反吹系统的除霜方案,提出了一种改进的进气滤芯反吹系统开关控制逻辑算法:通过采集环境温度、环境湿度以及进气滤芯壁温信号,计算得出环境露点温度,并与采集的进气滤芯壁温进行比较,判断是否存在结霜可能性,以此作为反吹系统开关的控制条件,达到抑制进气滤芯结霜的目的。研究结果表明:优化了的控制系统能够提前对结霜可能做出响应,动态控制反吹除霜系统的启停,保证进气滤芯附近环境参数维持在一个不宜结霜的条件下,为解决压缩机组进气滤芯结霜问题提供了一种可行方案。
In view of the problem of large inlet pressure loss resulting from the winter frost formation in the compressor of the long-distance pipeline compressor station and the existing defrosting measures in the station, the defrosting scheme of the original backflushing system is optimized and an improved Air intake filter backflushing system switch control logic algorithm: through the collection of ambient temperature, ambient humidity and inlet filter wall temperature signal, calculate the ambient dew point temperature, and with the intake air filter wall temperature to compare to determine the existence of frost Possibility as a control of the backflush system switch to achieve the purpose of inhibiting the intake filter frost. The results show that the optimized control system can respond to the frosting in advance and control the start-stop of the defrost system dynamically to ensure that the environmental parameters around the air intake filter are maintained under a condition that should not be frosted. In order to solve the problem of compression Unit intake filter frosting provides a viable option.