摘要
为解决配流盘气穴问题,考虑液压油中含气量、泵进油口压力梯度、柱塞转速以及柱塞直径的变化,以柱塞泵运动分析为出发点,在建立油液体积模量和泵的气穴数学模型基础上,结合AMESim单柱塞泵仿真模型,计算不同环境下泵内气穴发生情况。研究表明:当柱塞转速1500 r/min、柱塞直径φ12 mm、含气量占比10%和进油口压力梯度60 L·min^(-1)/MPa时,柱塞泵配流盘进油口位置压力低于空气分离压,发生气穴现象,并且气穴对油液体积模量产生巨大影响。该计算为预防轴向柱塞泵内气穴的发生提供一定的理论依据。
In order to solve the cavitation problem in the triangular groove of the port plate,considering the changes of the air content in the hydraulic oil,the pressure gradient at the pump inlet,the plunger speed and the plunger diameter,taking the motion analysis of the plunger pump as the starting point,based on the establishment of the oil bulk modulus and the cavitation mathematical model of the pump,combined with the AMESim single plunger pump simulation model,the occurrence of cavitation in the pump under different environments is calculated.The research shows that when the plunger speed was 1500 r/min,the plunger diameter wasφ12 mm,the air content accounts for 10%and the inlet pressure gradient is 60 L·min^(-1)/MPa,the pressure at the inlet of the port plate of the plunger pump is lower than the air separation pressure,cavitation occurs,and cavitation has a great impact on the bulk modulus of the oil.The calculation provides a theoretical basis for preventing cavitation in axial piston pump.
作者
贠振刚
吕微微
张丽玲
王金林
Yun Zhengang;Lyu Weiwei;Zhang Liling;Wang Jinlin(School of Energy Engineering,Xinjiang Institute of Engineering,Urumqi 830091,China;School of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Gansu Key Laboratory of Fluid Machinery and Systems,Lanzhou 730050,China)
出处
《煤矿机械》
2022年第4期5-8,共4页
Coal Mine Machinery
基金
新疆工程学院2020年科研育人项目(2019xgy532112)。
