轴向柱塞泵柱塞表面沟槽结构特性分析  

Analysis of Groove Structure on Piston Surface of Axial Piston Pump

作　　者：张静[1] 隋蕊阳 廖文博 周国杨 ZHANG Jing;SUI Rui-yang;LIAO Wen-bo;ZHOU Guo-yang(Colleye of Eingy and Power Engineeiny,Lanzhou Univ.of Tech.,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

出　　处：《液压气动与密封》2021年第2期26-30,共5页Hydraulics Pneumatics & Seals

基　　金：国家自然科学基金项目(51466008)。

摘　　要：利用AMESim软件和Fluent软件对轴向柱塞泵柱塞副进行仿真分析,通过AMESim柱塞泵模型得出柱塞腔压力曲线。在Fluent软件中通过UDF功能实现压力及运动速度的定义。比较分析6种不同结构柱塞的缝隙流动和均压特性。结论表明,不同的沟槽宽度和沟槽深度会对通过缝隙的流量和摩擦副油膜压力产生影响。沟槽宽度越大,通过缝隙的流量越大,沟槽深度越大,通过缝隙的流量越小。沟槽宽度和深度增加都会使均压效果更好,其中槽宽对均压特性影响更大。无沟槽结构柱塞通过缝隙的流量最小,但是均压效果最差。矩形沟槽结构柱塞在5种有沟槽结构柱塞中通过缝隙的流量最小,均压效果最好。该研究可为柱塞的密封与均压性能协同优化设计提供参考。Using AMESim software and Fluent software to simulate and analyze the piston-cylinder pair of axial piston pump,the pressure curve of plunger piston chamber was obtained through AMESim piston pump model.In Fluent software,UDF function is used to realize the definition of pressure and movement speed.The gap flow characteristics and pressure equalization characteristics of piston with 6 different structures were compared.The conclusion shows that different groove width and groove depth will influence the flow rate and the hydraulic oil film pressure of friction pair.The larger the width of the groove,the greater the flow through the gap,the greater the depth of the groove,and the smaller the flow through the gap.The increase of groove width and depth will make the equalizing effect better.The flow rate through the slot is the least,but the equalizing effect is the worst.Among the five kinds of piston with rectangular groove structure,the flow through the gap is the least and the equalizing effect is the best.This study can provide reference for the collaborative optimization design of seal and pressure equalizing performance of piston.

关 键 词：柱塞副 AMESIM UDF 缝隙流动 均压特性 

分 类 号：TH137.51[机械工程—机械制造及自动化]