Design of compressor clearance adjustment control system based on DCS
Aiming at the requirement of stepless capacity control of reciprocating compressor in petrochemical industry,the working principle of compressor clearance regulation system is analyzed.The hardware structure and software design method of clearance control system based on DCS are introduced.The displacement of clearance piston,oil tank level,oil temperature and oil pressure are collected by AI card of DeltaV system.The displacement signal is compared with the flow setting value after conversion.The PID control principle is used to remotely control the hydraulic system and adjust the displacement of clearance piston,so as to realize the stepless regulation of compressor gas volume.The control system has simple structure and stable operation,and achieves the purpose of energy saving and consumption reduction.
万方数据
维普
