高压往复泵缸体系统接触问题数值模拟  

Numerical simulation of contact problems in high pressure reciprocating pump systems

作　　者：唐倩[1] 高瞻[1] 朱才朝[1] 徐杰[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400030

出　　处：《重庆大学学报（自然科学版）》2009年第1期1-5,共5页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(2007AB3024)

摘　　要：针对往复泵外载荷作用复杂、缸体与阀套接触面上容易出现裂纹而失效的问题,依据往复泵工作原理、流体力学基本理论和接触问题数值方法,建立了高压往复泵缸体-阀座-阀套系统的接触模型。在考虑压力脉动、流量脉动、交变载荷和进、出口阀门开启关闭的撞击等多种因素的综合作用下,建立了高压往复泵缸体-阀座-阀套系统的有限元模型,对整个系统的接触状态进行了分析,得到缸体系统的应力分布、接触状态和接触面的接触应力分布情况及薄弱部位的位置。The cylinder bodies of reciprocating pumps easily fail from cracks due to complex external loads. Based on the working principle of reciprocating pumps, hydrodynamics, and a numerical method for surface-to-surface contact problems, a contact model involving a cylinder body, a valve base, and a valve pocket is established. Considering pressure fluctuation, flow pulsation, alternate loads, and the impact of the inlet and outlet valves, a finite element model for the complete system is established. Using this model, the contact state of the complete system is analyzed, and the stress distribution, contact state, contact stress distribution of the interface, and position of the weak part are obtained.

关 键 词：往复泵缸体 有限元法 数值模拟 

分 类 号：TB654[一般工业技术—制冷工程]