高压超大流量纯水卸荷阀启闭动态压力特性研究  

Study on Dynamic Pressure Characteristics of High Pressure Super Garge Flow Pure Water Unloading Valve on Opening and Closing

作　　者：郭岩成 赵申诞 董婕 曹文斌[1,2] 孙钰洋 刘银水 GUO Yan-cheng;ZHAO Shen-dan;DONG Jie;CAO Wen-bin;SUN Yu-yang;LIU Yin-shui(College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Wuxi Research Institute,Huazhong University of Science and Technology,Wuxi 214174,China;School of Mechanical Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]华中科技大学无锡研究院,江苏无锡214174 [3]华中科技大学机械科学与工程学院,湖北武汉430074

出　　处：《液压气动与密封》2024年第1期21-28,共8页Hydraulics Pneumatics & Seals

基　　金：国家自然科学基金(52075192);江苏省重点研发计划(BE2020087)。

摘　　要：卸荷阀是液压支架系统关键的压力控制元件。提出了一种高压超大流量纯水卸荷阀结构,并对卸荷阀的工作原理进行分析,建立了卸荷阀的数学模型。通过搭建AMESim仿真模型,分析了卸荷阀的动态循环工作过程,以及先导阀、主阀、单向阀的启闭动态压力特性。在调定卸荷压力下,对影响卸荷阀恢复压力的关键因素进行了分析。为了验证仿真模型的准确性,搭建了卸荷阀的试验测试系统。研究表明,仿真与试验的压力参数吻合较好,通过调整顶杆直径、阻尼孔直径、阻尼孔长度及先导阀弹簧刚度,可以优化卸荷阀的恢复压力,研究结果可以为高压超大流量纯水卸荷阀的设计提供理论基础。Unloading valve is the key pressure control element of hydraulic support system.In this paper,a kind of high pressure super large flow pure water unloading valve structure is proposed,and the working principle of the unloading valve is analyzed,and the mathematical model of the unloading valve is established.By building the AMESim simulation model,the dynamic cycle working process of the unloading valve and the opening and closing dynamic pressure characteristics of the pilot valve,main valve and check valve are analyzed.The key factors affecting the recovery pressure of unloading valve are analyzed under the setting unloading pressure.In order to verify the accuracy of the simulation model,the unloading valve test system is built.The results show that the pressure parameters of the simulation and the test are in good agreement.By adjusting the diameter of the piston rod,the diameter of the damping hole,the length of the damping hole and the spring stiffness of the pilot valve,the recovery pressure of the unloading valve can be optimized.The research results can provide a theoretical basis for the design of the high-pressure ultra-large flow pure water unloading valve.

关 键 词：卸荷阀 高压超大流量 压力特性 恢复压力 

分 类 号：TH137[机械工程—机械制造及自动化]