流体机械2023，Vol.51Issue(11)：29-35,7.DOI:10.3969/j.issn.1005-0329.2023.11.005
多种气量调节模式下往复压缩机连杆小头瓦润滑特性
Simulation study on lubrication characteristics of the connecting rod small bearing of the reciprocating compressor under various capacity regulation modes
摘要
Abstract
In different capacity regulation modes,the internal pressure change of reciprocating compressor cylinder is inconsistent,the force of moving parts such as connecting rod and piston rod is further affected,which is easy to cause wear of small end bearing of connecting rod and is very unfavorable for safe and stable operation of the unit.To solve this problem,a working model of stepless capacity regulation of the top-opening inlet valve of the compressor is established,and the control parameters of different regulation methods are introduced to simulate the pressure change law in the cylinder under different regulation methods.Further,a compressor multi-body dynamics model is established,and the lubrication characteristics of the connecting rod small head tile under bilateral balanced regulation,bilateral unbalanced regulation and single-side regulation are analyzed based on the Elastohydrodynamic lubrication theory.The results show that the rub impact angle fluctuation of balanced regulation is within 8 degrees,which has little effect on the lubrication of the small-head bearing,unbalanced regulation and single-side regulation have greater effect on small head tile lubrication.The cover side load shall be reduced preferentially and the load deviation on both sides shall not exceed 40%.The research results have a guiding effect on the engineering scheme and control strategy design of capacity regulation system.关键词
往复压缩机/气量调节/多体动力学/小头瓦/弹性流体动力润滑Key words
reciprocating compressor/capacity regulation/multibody dynamics/small head tile/elastohydrodynamic lubrication分类
机械制造引用本文复制引用
雷芙常,宋春雨,王瑶,张进杰,江志农..多种气量调节模式下往复压缩机连杆小头瓦润滑特性[J].流体机械,2023,51(11):29-35,7.基金项目
国家自然科学基金项目(52101343) （52101343）
航空科学基金项目(ASFC-201834S9002) （ASFC-201834S9002）
重庆市技术创新与应用发展专项面上项目(cstc2020jscx-msxm0411) （cstc2020jscx-msxm0411）
