黏温黏压下径向柱塞泵滑靴副温度分布与泄漏量分析  

Analysis of temperature distribution and leakage of slipper pair of radial piston pump under viscous temperature and pressure characteristics

作　　者：李少年[1,2] 张子骞 陈世豪 杨龙涛 LI Shaonian;ZHANG Ziqian;CHEN Shihao;YANG Longtao(College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Key Laboratory of Advanced Pumps,Valves and Fluid Control System Ministry of Education,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]兰州理工大学特种泵阀及流控系统教育部重点实验室,甘肃兰州730050

出　　处：《机电工程》2024年第10期1903-1913,共11页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(52165006);甘肃省教育厅高校科研创新平台重大培育项目(2024CXPT-09)。

摘　　要：针对高压大排量径向柱塞泵滑靴副摩擦失效和泄漏问题,以XDP1000型径向柱塞泵为例,对滑靴副温度分布与泄漏量进行了流场仿真和数值计算。首先,根据滑靴柱塞组件运动学特性分析,求解了滑靴偏转角变化规律,并通过建立滑靴副不同通道流量计算公式的方式,建立了滑靴副静压支承特性方程;然后,建立了滑靴副泄漏功率损失和摩擦功率损失模型,求解了滑靴副最佳油膜厚度,并分析了最佳油膜厚度的变化规律;最后,在考虑了油液黏温黏压特性的基础上,通过流场数值计算的方式,研究了滑靴副温度分布与泄漏量随径向柱塞泵工况参数的变化规律。研究结果表明:额定工况下,滑靴副最佳油膜厚度值约为14μm,滑靴副最佳油膜厚度值随着转子转角的增大而增大,随着工作压力和温度的增大而减小;滑靴运动方向侧油膜温度较另一侧高13 K,滑靴副温度值基本不受工作压力的影响,而随着转速的增大而升高;滑靴副阻尼孔泄漏量较滑靴边界泄漏量大0.02 kg/s,而且泄漏量随着压力、转速和油液温度的增大而增大。该研究结论可为高压大排量径向柱塞泵滑靴副设计及优化提供参考。Aiming at the problem of friction failure and leakage of the slipper pair in high-pressure large displacement radial piston pumps,the temperature distribution and leakage of the slipper pair on XDP1000 radial piston pump were researched by simulation and numerical calculation.Firstly,based on the kinematic characteristic analysis of the slipper and piston kits,the variation law of the deflection angle of slipper was solved.And the hydrostatic bearing characteristic was established from the flow calculation formulas for different channels of the slipper pair.Then the optimal oil film thickness and its variation law of the slipper pair were solved after establishing models for the leakage power loss and friction power loss of the slipper pair.Finally,based on the consideration of the characteristics of viscosity temperature and pressure of the oil,the laws of temperature distribution and leakage rate of the slipper pair were studied through numerical calculation of flow field.The research results show that the optimal oil film thickness of the slipper pair under rated operating conditions is about 14μm.And it increases with the increase of rotor angle,and decreases with the increase of working pressure and temperature.The temperature of oil film on the direction of the slipper is 13 K higher than that on the other side,and the temperature value is basically not affected by the working pressure,but increased with the increase of speed.The leakage rate at the damping hole of the slipper pair is 0.02 kg/s greater than that at the boundary of slipper,and the leakage rate increases with the increase of pressure,speed,and oil temperature.It can provide reference to design the slipper pair of high-pressure large displacement radial piston pumps.

关 键 词：高压大排量径向柱塞泵 静压支承特性 最佳油膜厚度 流体域温度分布 油液黏温黏压特性 工作压力 转子转速 流场仿真和数值计算 

分 类 号：TH322[机械工程—机械制造及自动化]