Dynamic analysis of reciprocating compressor with revolution joint clearance and translational joint clearance

Abstract

the dynamic analysis of reciprocating compressor with revolution joint clearance and translational joint clearance is introduced. The effect of the revolution joint clearance is expressed by the massless rod, and the interaction force between crosshead and the guide is expressed by the elastic damping collision force. The reciprocating compressor model with two kinds of wear clearance faults is established. Through numerical simulation, the variation law of crosshead motion parameters is found. The numerical results show that when there is a revolution joint clearance, translational joint clearance increases continuously, its displacement fluctuation is very small, its acceleration changes the most, and its velocity changes are affected in a certain time period. In the presence of crosshead wear clearance, the wear revolution joint clearance increases continuously. Similarly, its displacement fluctuation is very small, its acceleration changes the most, and its velocity changes are affected in a certain time period. The stability of the system with two kinds of wear clearance faults is judged by phase diagram method and maximum Lyapunov exponent method. It is found that the system is chaotic.