高压断路器操动机构液压阀控系统流场动态特性  

Dynamic Characteristics of Flow Field in Hydraulic Valve Controlled System of High Voltage Circuit Breaker Operating Mechanism

作　　者：刘煜 刘宇 朱文才 丁孺琦 李海文 刘森琪 LIU Yu;LIU Yu;ZHU Wencai;DING Ruqi;LI Haiwen;LIU Senqi(Henan Pinggao Electric Co.,Ltd.,Pingdingshan,Henan 467000;School of Mechatronics and Vehicle Engineering,East China Jiaotong University,Nanchang,Jiangxi 330013)

机构地区：[1]河南平高电气股份有限公司,河南平顶山467000 [2]华东交通大学机电与车辆工程学院,江西南昌330013

出　　处：《液压与气动》2025年第3期73-80,共8页Chinese Hydraulics & Pneumatics

基　　金：江西省自然科学基金(20242BAB25260)。

摘　　要：针对高压断路器操动机构液压阀控系统流场复杂多变的问题,分析阀口开度对液压缸、液压阀以及回油管路的流场动态特性影响。首先,采用ICEM软件对某型碟簧液压操动机构的流道进行提取,并进行了简化。然后,通过STAR-CCM+软件中的k-ε湍流模型对高压断路器操动机构液压阀控系统的流场进行求解,并通过动网格技术实现主阀芯的运动。结果表明:模拟计算得出的工作缸下端压力与实验测试的数据基本一致;液压油流经阀口时的流速迅速增加,且在主阀芯底部和阀体之间形成两个漩涡;随着主阀芯的移动,回油管路中的压力会产生较大的波动。In view of the complexities and variability in the flow field of the hydraulic valve controlled system in high voltage circuit breaker operating mechanisms,this study focuses on the impact of valve opening on the dynamic characteristics of the flow field within the hydraulic cylinder,hydraulic valve,and return oil pipeline.Initially,the flow channel of a disc spring hydraulic operating mechanism is extracted and simplified by using ICEM software.Subsequently,the k-εturbulence model in STAR-CCM+software is employed to solve the flow field of the hydraulic valve controlled system of the high voltage circuit breaker operating mechanism,and the movement of the main valve spool is realized by the dynamic grid technology.The results demonstrate that the pressure at the lower end of the working cylinder calculated by simulation is consistent with the experimental data.The velocity of hydraulic oil increases rapidly when it passes through the valve port while forming two vortices between the bottom of the main valve spool and the valve body.Additionally,the pressure in the return oil pipeline fluctuates considerably with the movement of the main valve spool.

关 键 词：液压阀 流场仿真 动网格 k-ε湍流模型 

分 类 号：TH137[机械工程—机械制造及自动化]