基于变倾角叶片型线方程的螺旋离心泵轴面速度确定  

Influence of Dip Angle Changing on Meridian Velocity for Screw Centrifugal Pump

作　　者：李仁年[1] 邓育轩[1] 韩伟[1] 杨文洁[1] 

机构地区：[1]兰州理工大学能源与动力工程学院,兰州730050

出　　处：《农业机械学报》2012年第11期134-137,133,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(51079066)

摘　　要：根据固液两相流在螺旋离心泵叶轮内通过螺旋段和离心段的不同运动特性,以及螺旋离心泵的结构特征,推导了螺旋离心泵的变倾角叶片型线方程。该方程避免了螺旋离心泵一元设计理论对设计经验的依赖性和叶轮轴面流线分点的复杂性,可通过改变型线方程中的参数来改变流体从轴向至径向过渡时液流的轴面速度分布,从而找到最佳的轴面速度分布,对该类型泵的计算机辅助设计、内部流场数值模拟以及泵性能改善有重要意义。According to the different movement characters of screw segment and centrifugal segment of liquid- solid two-phase flow in the screw centrifugal impeller and the structure characters of screw centrifugal pump impeller, the vane profile parameter equation group for variable-dip screw centrifugal pump was derived. The meridian velocity distribution can be changed though changing some parameters of the vane profile parameter equation group. Thus the better meridian velocity distribution could be found by using this method. Using the parameter equation group, the CAD and numerical simulation of 3-D flow field were also facilitated for screw centrifugal pump.

关 键 词：螺旋离心泵 变倾角 叶片型线方程 固液两相流 轴面速度 

分 类 号：TH311[机械工程—机械制造及自动化]