摘要
文中针对高温潜油电泵在运行过程中油液内的颗粒冲蚀磨损问题,在Ansys中使用Fluent建立冲蚀磨损模型,采用RNG k-ε湍流模型计算流体域,基于Euler-Lagrange方法,使用Simplec算法进行计算求解。分别研究了固体颗粒粒径的大小、入口流量、颗粒的体积分数、叶轮转速、质量流率及颗粒密度对叶轮冲蚀磨损的影响。结果表明:随着颗粒粒径d的增大,一级叶轮的平均磨损率E持续增大,但增长速度越来越小,二级叶轮的平均磨损率E先变大后变小;随着叶轮入口流量Q的变大,一级叶轮、二级叶轮的平均磨损率E先增大后减小;叶轮转速n、颗粒体积分数c、质量流率及颗粒密度都会影响两级叶轮的冲蚀磨损率增大,颗粒的体积分数与叶轮的磨损率呈现线性的影响规律;叶轮的转速n对2级叶轮的影响都较大;颗粒质量流率主要影响了二级叶轮的增长;颗粒密度对两级叶轮的磨损率影响较小。
For the erosion wear of particles in the oil during the operation of high-temperature submersible pump,an erosion wear model is established by using Fluent in Ansys,and the fluid field is calculated by RNG k-εturbulence model.Based on Euler-Lagrange method,Simplec algorithm is used to solve the problem.The effects of solid particle size,inlet flow rate,particle volume fraction,impeller speed,mass flow rate and particle density on impeller erosion wear were studied respectively.The results show that with the increase of particle size(d),the average wear rate(E)continues to increase,but the growth rate is slower and slower,and the average wear rate(E)of the secondary impeller first increases and then decreases;with the increase of impeller inlet flow(Q),the average wear of primary impeller and secondary impeller first increases and then decreases;Impeller speed(n),particle volume fraction(c),mass flow rate and particle density will all affect the increase of erosion wear rate of two-stage impeller,and the particle volume fraction has a linear relationship with the impeller wear rate.The rotating speed(n)of the impeller has a great influence on the two-stage impeller;Particle mass flow rate mainly affects the growth of secondary impeller;Particle density has little effect on the wear rate of two-stage impeller.
作者
张晓辉
李延斌
Zhang Xiaohui;Li Yanbin
出处
《起重运输机械》
2023年第7期51-56,共6页
Hoisting and Conveying Machinery
关键词
潜油电泵
冲蚀磨损
固液两相流
叶轮
分析
submersible pump
erosion wear
solid-liquid two-phase flow
impeller
analysis
