流体的可压缩性对高压子母叶片泵叶片受力的影响  

Influence of Compressibility of Fluid on Force of Vane in High Pressure Intra-vane Type Pump

作　　者：李少年[1] 那焱青[1] 王峥嵘[1] 那成烈[1] 

机构地区：[1]兰州理工大学流体动力与控制学院,甘肃兰州730050

出　　处：《机床与液压》2007年第1期114-116,共3页Machine Tool & Hydraulics

基　　金：兰州理工大学科研发展基金资助项目(SB06200411)

摘　　要：当叶片泵工作压力很高时,油液可压缩性已经不能忽略。本文在考虑流体可压缩性的情况下,对高压子母叶片泵叶片与定子之间的内法向接触反力进行建模和计算机仿真,得到了与实际情况更接近的内法向接触反力的变化曲线,并与普通低压叶片泵定子与转子之间接触反力的变化曲线进行比较,结果发现两者有很大的区别,这主要是因为国内外现有的文献仍按流体的不可压缩性的假设计算的。高压子母叶片泵叶片从大圆弧区向排油区过渡时,该力的曲线有一个变化的尖角,这样就更加真实地体现叶片与定子之间力的变化情况。最后对该曲线出现的尖角进行了分析,并提出尖角消除的方法,以期得到最佳的叶片受力状况。When vane pump working in very high pressure, fluid＇ s compressibility shouldn＇ t be ignored. The model of contact reaction - force in normal line direction between vane and stator was built in high pressure intra - vane type pump in the case of considering compressibility of fluid, and the variation curve of contact reaction - force was obtained by computer simulation which is closer to actual condition than former literature. When a vane moves from long radius to outlet area, variation curve of contact counterforce has a variant sharp angle, which reflects the variation of contact reaction -force between vane and stator. The curve of variant sharp angle was analyzed and solution was provided for the optimum state in intra - vane type pump.

关 键 词：子母叶片泵 可压缩性 接触反力 

分 类 号：TH137.51[机械工程—机械制造及自动化]