基于DPM固液两相流仿真的单向阀冲蚀特性研究  

Study on Erosion Characteristics of One-way Valve Based on DPM Solid-Liquid Flow Simulation

作　　者：张进杰 张慧斌 陈平伟 王瑶 ZHAGN Jin-jie;ZHANG Hui-bin;CHEN Ping-wei;WANG Yao(Beijing Key Laboratory of Health Monitoring Control and Fault Self-recovery for High-end Machinery,Beijing University of Chemical Technology;Chongqing Pump Industry Co.,Ltd.)

机构地区：[1]北京化工大学高端机械装备健康监控与自愈化北京市重点实验室 [2]重庆水泵厂有限责任公司

出　　处：《化工机械》2024年第2期229-236,共8页Chemical Engineering & Machinery

基　　金：重庆市技术创新与应用发展专项面上项目(批准号:cstc2020jscx-msxm0411)资助的课题。

摘　　要：基于计算流体力学(CFD-DPM),结合k-ε湍流模型,建立了一种颗粒-流场双向耦合冲蚀磨损模型,以单向阀为研究对象,分析阀芯开度、颗粒粒径和浓度对过流部件壁面的冲蚀磨损影响。结果表明:阀隙是颗粒运动的高速区,磨损严重部位是阀芯底角和阀座锥面,且阀座锥面处磨损相对严重;随阀芯开度的增大,颗粒在阀隙内速度降低,对过流壁面磨损量减少;阀芯冲蚀速率随粒径增大而减小,阀座冲蚀速率随粒径增大而增大,当粒径为0.5 mm时,阀座最大冲蚀速率和平均冲蚀速率接近极大值;阀芯与阀座冲蚀速率与颗粒浓度呈正相关,阀座处磨损面积随浓度增大而增大。Based on computational fluid dynamics(CFD-DPM)and k-ε turbulence model,a particle-flow two-way coupled erosive wear model was established,which having a check valve taken as the object of research to analyze the influence of spool opening,particle size and concentration on the wall’s erosive wear of the flow-parts.The results show that,the valve clearance is the high-speed zone of particle movement,and the serious wear parts are the bottom angle of the valve core and the cone surface of the valve seat,and the wear at the cone surface of the valve seat is relatively serious.With the increase of the spool opening,the velocity of the particles in the valve clearance decreases,and the wear on the flow wall decreases.The erosion rate of the valve core decreases with the increase of the particle size,and the erosion rate of the valve seat increases with the increase of the particle size.When the particle size is 0.5 mm,the maximum erosion rate and the average erosion rate of the valve seat are close to the maximum value.The erosion rate of the valve core and valve seat is positively correlated with the particle concentration,and the wear area at the valve seat increases with the increase of the concentration.

关 键 词：往复隔膜泵 单向阀 固液两相 冲蚀磨损 DPM 

分 类 号：TQ051.21[化学工程]