静叶安放角变化规律对螺旋轴流混输泵流动特性的影响  

The influence of the variation law of the installation angle of fixed blade on the flow characteristics of spiral axial flow multiphase pump

作　　者：马希金[1] 韩作鹏 宛航 张立传 MA Xijin;HAN Zuopeng;WAN Hang;ZHANG Lichuan(College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

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：《流体机械》2021年第10期66-73,共8页Fluid Machinery

基　　金：国家重点研发计划项目(2018YFB0606100)。

摘　　要：针对自主研制的一典型气液混输泵,以叶栅理论和Matlab为基础获得不同安放角变化规律下的静叶型线。基于FLUENT16.2、RNG k-ε湍流模型和SIMPLEC算法,研究不同含气率和静叶安放角变化规律对混输泵增压单元的增压能力及增压效率的影响、静叶能量损失和叶片负载沿流线分布情况。结果表明:在气体体积分数GVF=0.3工况下M3模型的静叶效率和静叶能量回收能力最优,相比线性变化的静叶其效率增加了1.1%;就压力负载而言,安放角呈线性变化时,静叶的工作面和背面的压差逐渐减小;安放角呈非线性分布时,沿流线方向的最大压力负载差随着流线的增加越来越靠近静叶的出口边。研究结果对混输泵静叶设计及优化提供了理论参考依据。For a typical self-developed gas-liquid mixed pump,the fixed blade profiles with different variation laws of installation angle were obtained based on the cascade theory and Matlab.Based on FLUENT,RNG k-ε turbulence model and SIMPLEC algorithm,the influence of different gas contents and variation law of the fixed blade installation angle on pressurization capacity and pressurization efficiency of multiphase pump pressurizing unit,the energy loss of fixed blade and distribution of vane load along the streamline direction were studied.The results show that under the condition of gas volume fraction GVF=0.3,the efficiency and energy recovery capacity of the fixed blade in M3 model were the best.Compared to the linearly changing fixed blade,its efficiency was increased by 1.1%;in terms of pressure load,when the installation angle changes linearly,the pressure difference between the working surface and the back of the blade gradually decreases;when the installation angle is nonlinearly distributed,the maximum pressure load difference along the streamline direction is getting closer and closer to the outlet side of the blade as the streamline increases.The research results provide a theoretical reference for the design and optimization of the fixed blade of the multiphase pump.

关 键 词：螺旋轴流泵 安放角 含气率 气液混合 

分 类 号：TH312[机械工程—机械制造及自动化]