基于空穴效应的高压供油泵轴承润滑分析  

Lubrication analysis of bearing of high pressure oil supply pump based on cavity effect

作　　者：唐诗泽 张翼 李斌茂 许磊 庞浩宇 宋猛 张江 Tang Shize;Zhang Yi;Li Binmao;Xu Lei;Pang Haoyu;Song Meng;Zhang Jiang(Institute of Energy and Power Engineering,North University of China,Shanxi Taiyuan, 030051, China;Institute of Mechanical and Electrical Engineering,North University of China,Shanxi Taiyuan, 030051, China)

机构地区：[1]中北大学能源动力工程学院,山西太原030051 [2]中北大学机电工程学院,山西太原030051

出　　处：《机械设计与制造工程》2022年第2期106-110,共5页Machine Design and Manufacturing Engineering

基　　金：山西省科技重大专项(MQ2016-02-01);山西省“百人计划”创新团队项目资助;山西省研究生创新项目(2021Y577)。

摘　　要：针对高压供油泵主轴轴承润滑问题,引入多相流模型模拟计算出润滑油膜的气穴分布,运用Fluent软件建立高压供油泵主轴端滑动轴承油膜有限元模型。依据计算流体动力学原理,运用瞬态仿真的方法分析计算不同转速、进油压力和油品黏度对油膜特性的影响。研究结果表明:转速和油品黏度增加都会增大空穴面积,降低润滑效果,但油品黏度增加会使油膜承载力增大,又对润滑有一定积极作用;进油压力增加使空穴气体平均体积分数减小,油膜承载力增加,有助于润滑,增大进油压力是增强润滑效果的有效方法。Aiming at the lubrication problem of spindle bearing of high-pressure oil supply pump,the multiphase flow model is introduced to simulate and calculate the cavitation distribution of lubricating oil film,and the finite element model of sliding bearing oil film at the spindle end of high-pressure oil supply pump is established by using Fluent software.According to the principle of computational fluid dynamics,the effects of different rotational speed,oil inlet pressure and oil viscosity on oil film characteristics are analyzed and calculated by transient simulation method.The results show that the increase of rotating speed and oil viscosity will increase the cavity area and reduce the lubrication effect,but the increase of oil viscosity will increase the bearing capacity of oil film and have a positive effect on lubrication.With the increase of oil inlet pressure,the average volume fraction of cavitation gas decreases and the bearing capacity of oil film increases,which is beneficial to lubrication.Increasing oil inlet pressure is an effective method to enhance the lubrication effect.

关 键 词：空穴效应 高压油泵 滑动轴承 计算流体力学 FLUENT 

分 类 号：TH133.31[机械工程—机械制造及自动化] TH322