Dynamic research of piston/piston assembly in labyrinth reciprocating compressor

International Conference on Compressors and their Systems 2019

Zhang, Wenshan^1 ; Zhang, Zhao^1 ; Qian, Lv^1 ; Feng, Quanke^1 ; Wu, Weifeng^1

Xian Jiaotong University, Xi'an, China^1

关键词: Dynamic characteristics;    Dynamic researches;    Gas leakages;    Multi-body;    Multi-body dynamic;    Rigid flexible coupling;    Virtual simulation models;    Volume efficiency;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/604/1/012020/pdf
DOI  :  10.1088/1757-899X/604/1/012020

来源: IOP

【 摘 要 】

The piston of labyrinth reciprocating compressor is often in the eccentric running state during operation, which leading to serious gas leakage and reduced compressor volume efficiency. To optimize the performance of labyrinth reciprocating compressor, the main reasons of piston eccentric operation are analyzed in detail in this paper. Based on the theory of multi-body dynamic and influence of piston bending and vibration, a rigid-flexible coupling multi-body virtual simulation model of piston/piston rod assembly is established by using numerical analysis software. The factors causing eccentric running of piston in cylinder are investigated and the eccentric running track of piston in cylinder and its dynamic characteristics are obtained.