基于AMESim的双级保护大流量安全阀开启压力及流量特性影响因素研究  

Research on Influencing Factors of Cracking Pressure and Flow Characteristics of the Two-stage Protection Large Flow Safety Valve Based on AMESim

作　　者：高宇龙[1] 姚丽英 张占东 张榕慧 郭开玺 郝佩儒 石转转 GAO Yulong;YAO Liying;ZHANG Zhandong;ZHANG Ronghui;GUO Kaixi;HAO Peiru;SHI Zhuanzhuan(Teaching Center of Experiment and Practice,Shanxi Datong University,Datong Shanxi 037003,China;College of Mechanical and Electrical Engineering,Shanxi Datong University,Datong Shanxi 037003,China)

机构地区：[1]山西大同大学教学实验与实训中心,山西大同037003 [2]山西大同大学机电工程学院,山西大同037003

出　　处：《机床与液压》2022年第2期156-161,共6页Machine Tool & Hydraulics

基　　金：大同市科学技术计划项目(2017159;2017014;2018149;2018022);山西大同大学2018年度青年科学研究基金项目(2018Q7);山西大同大学2020年研究生教育创新项目(20CX21);山西大同大学2020—2021年度青年科研基金项目(2021Q2)。

摘　　要：在分析某型双级保护大流量安全阀工作原理的基础上,建立双级保护安全阀的数学模型;借助AMESim16.0软件建立双级保护大流量安全阀及包含安全阀的支架液压仿真模型,进行仿真分析,得到安全阀开启压力、流量特性曲线。为进一步探究影响双级保护大流量安全阀开启压力、流量特性的因素,改变一级直动阀的直径、二级差动阀进液口直径及二级差动阀芯小端直径并在支架液压模型中进行仿真分析。结果表明:一级直动阀阀芯直径为11.5 mm时,开启压力为40 MPa;给定进液口为直径34 mm、二级差动阀芯小端直径为30 mm时,二级差动阀开启压力约为45 MPa。仿真结果为更好地应用双级保护大流量安全阀提供参考。Based on the analysis of the working principle of a two-stage protection large flow safety valve, the mathematical model of the two-stage protection safety valve was established;the hydraulic simulation models of the two-stage protection large flow safety valve and the support including the safety valve were established by using the AMESim16.0 software, and the simulation analysis was conducted to obtain the cracking pressure and flow characteristic curve of the safety valve. In order to further explore the factors affecting the cracking pressure and flow characteristics of the two-stage protection large flow safety valve, the diameter of the first-stage direct-acting valve, the inlet diameter of the second-stage differential valve and the small-end diameter of the second-stage differential valve were changed, and the simulation analysis was carried out in the support hydraulic model.The results show that the cracking pressure is 40 MPa when the valve core diameter of the first-stage direct-acting valve is 11.5 mm;the cracking pressure of the second-stage differential valve is 45 MPa when the inlet diameter is 34 mm and the small end diameter of the secondary differential valve is 30 mm. The simulation results provide reference for better application of the two-stage protection large flow safety valve.

关 键 词：双级保护大流量安全阀 开启压力 流量特性 AMESIM仿真 

分 类 号：TH137.5[机械工程—机械制造及自动化]