给水泵最小流量循环阀结构设计及数值模拟  

Structure Design and Numerical Simulation of Minimum Flow Regulating Valve for Feed-water Pump

作　　者：那腾及 孙长青 郝春 张小辉[3] NA Teng-ji;SUN Chang-qing;HAO Chun;ZHANG Xiao-hui(School of Machinery, Shenyang Institute of Engineering, Shenyang, Liaoning 110136;State Grid Liaoning Electric Power Co. , Ltd. , Shenyang, Liaoning 110500;Engineering Training Center, Shenyang Institute of Engineering, Shenyang, Liaoning 110136)

机构地区：[1]沈阳工程学院机械学院,辽宁沈阳110136 [2]国家能源集团辽宁电力有限公司,辽宁沈阳110500 [3]沈阳工程学院工程训练中心,辽宁沈阳110136

出　　处：《液压与气动》2022年第3期138-144,共7页Chinese Hydraulics & Pneumatics

基　　金：2017年度辽宁省高等学校科学研究立项计划(LQN201222)。

摘　　要：最小流量循环阀是保护给水泵安全运行的重要流量控制部件。通过对两种迷宫流道以及两种最小流量循环阀整体模型进行模拟分析和对比,检验了不同流道通流面积和不同流道数量对其性能的影响。结果表明,迷宫盘降压结构具有良好的压降控速效果,可以有效避免汽蚀现象的产生;采用12流道迷宫盘降压结构的最小流量循环阀的综合性能更优,压力分布更为均匀,压降效果更好,且具有良好的通流能力。研究结果可以为最小流量循环阀或同类产品的研发提供一定参考。The minimum flow regulating valve is a vital flow control component to protect the safe operation of the feed-water pump.Based on the simulation and analysis of two labyrinth channels and the overall models of two minimum flow regulating valves,the effects of different flow areas and different numbers of channels on the performance are investigated.The results show that the pressure drop structure of the labyrinth disk has a sound control effect on pressure drop and speed regulation,which can effectively avoid the occurrence of the cavitation phenomenon.The minimum flow regulating valve with a 12-channel labyrinth disk structure has better overall performance,more uniform pressure distribution,better pressure drop effect,and better flow capacity.The research results can provide a specific reference for the research of minimum flow regulating valves or similar products.

关 键 词：最小流量循环阀 结构设计 迷宫盘 压降梯度 流速调节 流量特性 

分 类 号：TH137[机械工程—机械制造及自动化] TH122