大型往复压缩机主机振动分析与测试研究  

Vibration analysis and test study of large reciprocating compressor host

作　　者：黄志强[1] 杨仁松 李刚[1] 李涛 黄琴 叶闯 HUANG Zhi-qiang;YANG Ren-song;LI Gang;LI Tao;HUANG Qin;YE Chuang(School of Mechatronic Engineering,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学机电工程学院,四川成都610500

出　　处：《工程设计学报》2022年第4期465-473,共9页Chinese Journal of Engineering Design

基　　金：国家自然科学基金资助项目(41902326)。

摘　　要：在页岩气开采过程中,压缩机主机气缸内的页岩气在短时间内被急剧压缩,页岩气压力高且波动大,机组转速快,致使主机承受着多种复杂、周期性激励载荷的作用,主机及其零部件产生复杂振动,严重影响压缩机的工作可靠性。因此,以大型往复压缩机主机为研究对象,采用瞬态响应分析与实验测试相结合的方法,开展压缩机主机振动研究。主机振动仿真和测试实验结果表明:主机振动变形最大的部位为四缸端部,为0.09 mm;主机最大应力出现在一级进气缓冲罐与四缸连接部,为29.66 MPa;主机二级进气缓冲罐自由端往复方向的振动烈度最大,为14.75 mm/s,振动烈度满足要求,主机振动处于安全状态;仿真与测试所得振动烈度的最大误差为12.7%,在工程允许误差范围内,验证了仿真方法的合理性和正确性。研究成果为进一步降低压缩机主机振动和优化主机结构提供了参考。In the process of shale gas exploitation, the shale gas in the cylinder of the compressor host is rapidly compressed in a short time, resulting in high shale gas pressure and large fluctuation, and fast unit speed. As a result, the host is subjected to a variety of complex and periodic excitation loads, and the host and its components produce complex vibration, which seriously affects the working reliability of the compressor. Therefore, taking large reciprocating compressor host as research object, combining the transient response analysis with experimental test, the vibration research of the compressor host was carried out. The vibration simulation and test results of the host showed that the largest vibration deformation of the host was 0.09 mm at the end of the fourth cylinder;the maximum stress of the host was 29.66 MPa at the connection between the primary air intake buffer tank and the fourth cylinder;the vibration intensity of the free end of the secondary air intake buffer tank of the host in the reciprocating direction was the largest, which was 14.75 mm/s. In this state, the vibration intensity met the requirement, and the vibration of the host was in a safe state;the maximum error of vibration intensity obtained by simulation and test was 12.7%, which was within the allowable error range of the project,and verified the rationality and correctness of the simulation method. The research results provide a reference for further reducing the vibration and optimizing the structure of the compressor host.

关 键 词：压缩机主机 主机振动 振动测试 振动烈度 

分 类 号：TH45[机械工程—机械制造及自动化]