偏心状态下柱塞泵柱塞副油膜特性仿真研究  

Simulation on oil film characteristics of plunger pair of plunger pump under eccentric state

作　　者：王俊杰 赵书尚[1] 李阁强[1] 李子璋 WANG Jun-jie;ZHAO Shu-shang;LI Ge-qiang;LI Zi-zhang(College of Mechanical and Electrical Engineering,Henan University of Science and Technology,Luoyang 471003,China)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003

出　　处：《机电工程》2023年第1期31-38,共8页Journal of Mechanical & Electrical Engineering

基　　金：山东省重点研发计划(国际科技合作专项)资助项目(2019GHZ013)。

摘　　要：为了完善柱塞泵柱塞副性能分析理论体系,研究了不同转速对偏心状态下柱塞副油膜润滑特性的影响。首先,建立了柱塞副油膜厚度场、压力场和温度场的数学模型;然后,采用有限体积法对雷诺方程和能量方程进行了离散化处理,并且采用超松弛(SOR)迭代算法对其进行了求解;最后,采用MATLAB软件对柱塞副油膜特性进行了仿真分析,获得了转速在一个周期内对压油区油膜压力场、温度场的影响规律。研究结果表明:柱塞偏载产生挤压效应,随着转速增加,油膜压力峰值增长得越剧烈,当转速为3000 r/min时,压力峰值达到63.87 MPa;不同转速下柱塞副油膜温度场形态基本一致,转速越高,柱塞偏心程度越大,温度增长速度越快,当转速为3000 r/min时,油膜出口处局部温度峰值达到62.2℃。该研究结果可以为进一步改善柱塞泵柱塞副的润滑性能提供一定的理论依据。In order to improve the theoretical system of piston pump performance analysis,the effect of different speed on the oil film lubrication properties of piston pair in eccentric state was studied.Firstly,the mathematical models of the plunger pair oil film thickness field,pressure field and temperature field were built.Then,the Reynolds equation and the energy equation were discretized used the finite volume method and solved by successive over relaxation(SOR)algorithm.Finally,the oil film properties of the plunger pair were simulated by MATLAB software.The effect of speed on the pressure field and temperature field of the oil film in the oil pressure area in one cycle was obtained.The research results indicate that the eccentric load of the plunger produces a squeeze effect.As the speed increases,the peak value of the oil film pressure increases more rapidly.When speed is 3000 r/min,the peak pressure reaches 63.87 MPa.The shape of the temperature field of the plunger pair oil film at different speeds is basically the same.The higher the speed is,the greater the plunger eccentricity is,and the faster temperature increases.When speed is 3000 r/min,the local temperature peak at the oil film reaches 62.2℃.The results provide a theoretical basis for further improving the lubrication performance of the plunger pair of the plunger pump.

关 键 词：容积泵 柱塞泵转速 油膜特性 超松弛迭代算法 挤压效应 温度峰值 

分 类 号：TH322[机械工程—机械制造及自动化]