Dynamic performance of reciprocating compressor with capacity regulation system

Abstract

Regulating capacity by holding suction valves open in the partial compression stroke has a great application value for reciprocating compressors, which can reduce the power consumption proportionally with respect to the decrease of capacity. To allow this method to be widely applicable, it is important to analyze the changes in the dynamic performance of reciprocating compressors. This study focuses on the dynamic performance in an M-type reciprocating compressor with capacity regulation system. When the compressor’s capacity is regulated, the connecting rod force and normal force are within a reasonable range. The capacity regulation system has little effect on the shaft speed irregularity of compressor when the capacity regulation ratio is below 100%. The designed flywheel moment can satisfy the compressor’s safe operation under variable capacity regulation conditions. The results show that the application of the capacity regulation system has little negative influence on the compressor’s dynamic performance.

Optimization Design of Actuator Parameters with Stepless Capacity Control System Considering the Effect of Backflow Clearance

“…The connecting rod force and normal force were both within the range. Moreover, it had little influence on the uneven axial velocity of the compressor, and the flywheel moment could completely satisfy the capacity control condition, and the capacity control system has little influence on the dynamic performance of the compressor [16]. Zhao et al studied the influence of spring stiffness and hydraulic pressure on the characteristics of the actuator through experiments, and proposed that dynamic response performance and working life should be considered in the design of the actuator [17].…”