高压叶片泵叶片-定子副弹流动压润滑特性研究  

Study on the Elastohydrodynamic Lubrication Characteristics of the Vane-stator Pair in High Pressure Vane Pump

作　　者：赵二辉 邵波 乔妙杰 权龙 汪成文 ZHAO Erhui;SHAO Bo;QIAO Miaojie;QUAN Long;WANG Chengwen(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024;Shanxi Special Equipment Company Limited of CETC,Taiyuan 030032)

机构地区：[1]太原理工大学机械与运载工程学院,太原030024 [2]山西中电科技特种装备有限公司,太原030032

出　　处：《机械工程学报》2024年第8期308-319,共12页Journal of Mechanical Engineering

基　　金：国家自然科学基金(52005359);中国博士后科学基金(2019M661062);山西省青年科学基金(201901D211021)资助项目。

摘　　要：目前高压叶片泵叶片-定子副间的弹流动压润滑特性尚不清楚,叶片-定子副的过早磨损失效已成为制约叶片泵高压化发展的瓶颈。建立叶片-定子副弹流动压润滑数学模型,结合双色光干涉弹流动压润滑试验和高压叶片泵台架试验,研究叶片-定子副间的压强分布特性、弹性变形特性、油膜厚度分布特性和油膜动压承载特性,并给出不同相位处叶片-定子副间的油膜动压承载分布图。结果显示,吸油区叶片-定子副间油膜较薄,最小油膜厚度约为0.45μm,且宽度方向两端油膜厚度比中部薄约0.01μm,因此,吸油区定子内壁两端边沿区域出现较宽且较严重的磨损。此外,吸油区流体动压也较强,最高局部压强可达1.2 GPa,吸油区油膜动压承担的载荷约占总载荷的14%。通过研究高压叶片泵叶片-定子副间的弹流动压润滑特性,揭示油膜动压承载对叶片-定子副的减阻抗磨机理,为高压叶片泵减阻抗磨优化设计提供理论基础。At present,the elastohydrodynamic lubrication characteristics between the vane-stator pair of high-pressure vane pump are not clear,and the premature wear failure of the vane-stator pair has become a bottleneck restricting the high-pressure development of vane pump.Therefore,a mathematical model of the elastohydrodynamic lubrication of the vane-stator pair is established.Combined with the bicolor light interference elastohydrodynamic lubrication test and the high-pressure vane pump bench test,the characteristics of pressure distribution,elastic deformation,oil film thickness distribution and oil film hydrodynamic bearing between the vane-stator pair were studied.And the distribution diagram of the oil film hydrodynamic bearing capacity between the vane-stator pair at different phases is provided.The results show that,the oil film in the oil absorption area is relatively thin,with a minimum oil film thickness of about 0.45μm.The oil film thickness at both ends of the vane-stator pair in the width direction is about 0.01μm thinner than the middle oil film thickness.Therefore,the edge areas of the inner wall of the stator in the oil absorption area show wider and more severe wear.In addition,the fluid hydrodynamic in the oil absorption zone is also strong,with the highest local pressure reaching 1.2 GPa.The load borne by the oil film hydrodynamic in the oil absorption zone accounts for approximately 14%of the total load.The elastohydrodynamic lubrication characteristics between the vane-stator pair are investigated,and the drag reduction and wear resistance mechanisms of the oil film hydrodynamic bearing on the vane-stator pair are revealed,which will provide a theoretical basis for the optimization design of drag reduction and wear resistance of high-pressure vane pump.

关 键 词：高压叶片泵 叶片-定子副 弹流润滑 油膜承载 减阻抗磨 

分 类 号：TH324[机械工程—机械制造及自动化]