高压大排量径向柱塞泵定子运动规律分析  

Analyses on Stator Motion Laws of High Pressure Large Displacement Radial Piston Pump

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

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：《液压与气动》2024年第7期72-78,共7页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金(52165006)。

摘　　要：为改善高压大排量径向柱塞泵定子-滑靴副摩擦状况,实现泵的精确变量,提出定子圆周方向非固定安装结构。通过滑靴柱塞组件力学特性分析,建立单个滑靴滑动摩擦力矩和11个滑靴摩擦合力矩,求解得到定子角速度变化曲线。结果表明,定子在滑靴滑动摩擦力矩作用下能够运动,且排油区滑靴摩擦力矩大于吸油区滑靴摩擦力矩。径向柱塞泵正常工作后,定子角速度稳定在89.5~90.6 rad/s,呈周期变化,对定子运动起阻碍作用的滑靴个数为4、5交替变换。为高压大排量径向柱塞泵滑靴副设计、提高泵的性能提供一定参考。In order to improve the friction condition of the stator-slipper pair of the high-pressure large displacement radial piston pump and achieve precise pump variables,a non fixed installation structure in the circumferential direction of the stator was proposed.Then the mechanical characteristics of the slippers and piston component were analyzed,the sliding friction torque of a single slipper and the combined force torque of 11 slippers friction were established,and the variation curve of the stator angular velocity was obtained.It was found that the stator can move under the sliding friction torque of slippers,and the friction torque in the oil discharge area is greater than that in the oil suction area.After normal operation of the radial piston pump,the stator angular velocity stabilizes between 89.5 rad/s and 90.6 rad/s,exhibiting periodic changes.The number of slippers that hinder stator movement is 4 or 5 alternating changes.The research provides certain references for the design of slipper pairs for high-pressure large displacement radial piston pump and the improvement of pump performance.

关 键 词：径向柱塞泵 滑靴 定子 摩擦力矩 转角 角速度 

分 类 号：TH137[机械工程—机械制造及自动化]