均压槽对滑阀配合间隙内固体颗粒分布的影响  

Effect of Pressure Groove on the Distribution of Solid Particles in Fit Clearance of Spool Valve

作　　者：赵春玲[1,2] 刘新强[1,2] 冀宏[1,2] 王金林[1,2] 

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]甘肃省液压气动工程技术研究中心,甘肃兰州730050

出　　处：《甘肃科学学报》2016年第2期92-96,共5页Journal of Gansu Sciences

基　　金：湖南省科技厅重大专项(2011FJ1046)

摘　　要：为了分析阀芯均压槽对液压滑阀微米级径向配合间隙内固体颗粒物分布的影响,建立含有不同均压槽的间隙流场二维轴对称模型,采用Fluent欧拉-欧拉液固两相流模型对配合间隙内流场进行仿真计算。结果表明:均压槽内贴近阀体壁面处,固相体积分数最高;均压槽尺寸越小,间隙中心的固相体积分数越低;U形槽时,壁面处的固相体积分数最高,矩形槽次之,三角槽时贴近阀体壁面处颗粒物分布最少,而槽底部固相含量最多;圆角三角槽可在很大程度上减小间隙中心的固相体积分数,三角槽对颗粒物的截留作用大,藏污能力强。In order to analyze the effect of valve element of pressure groove on the distribution of solid particles of hydraulic spool valve in micron-sized fit clearance at radial direction,two-dimensional axis-symmetry model of clearance flow field with different pressure groove is build and simulating calculation of fit clearance flow field is conducted by adopting Fluent eulerian liquid-solid two-phase flow model.The result indicates that solid volume fraction is highest in the pressure groove adjoined valve body wall and the rectangular groove takes the second place.Particles of valve body wall in triangular groove is the least,while solid loading in groove bottom is the most.Round triangular groove can largely reduce the solid volume fraction in clearance centre,which has large retention of particles and strong ability for pollutant.

关 键 词：液压滑阀 配合间隙 均压槽 颗粒分布 截留作用 

分 类 号：TH137[机械工程—机械制造及自动化]