直动式安全阀启闭特性分析与优化  

Analysis and Optimization of Opening and Closing Characteristics of Direct Action Safety Valve

作　　者：赵峰 高二峰 郭琪 孔德才 李曼迪 ZHAO Feng;GAO Erfeng;GUO Qi;KONG Decai;LI Mandi(Xinxiang Aviation Industry(Group)Co.,Ltd.,Xinxiang Henan 453002,China;School of Mechanical Engineering,Yanshan University,Qinhuangdao Hebei 066004,China;Hebei Heavy Machinery Fluid Power Transmission and Control Laboratory,Qinhuangdao Hebei 066004,China)

机构地区：[1]新乡航空工业(集团)有限公司,河南新乡453002 [2]燕山大学机械工程学院,河北秦皇岛066004 [3]河北省重型机械流体动力传输与控制实验室,河北秦皇岛066004

出　　处：《机床与液压》2024年第7期87-92,共6页Machine Tool & Hydraulics

摘　　要：针对某安全阀启闭特性影响无法满足设计需求的问题,需要对液流力进行分析。首先进行流场仿真与分析,研究安全阀内部流体的流动特性与液流力作用规律,得到安全阀启闭特性不足的主要原因是安全阀出口结构不合理;基于动力学分析与CFD仿真结果构建AMESim仿真模型并复现实验曲线,通过提高出口位置以及扩大出口直径实现安全阀的结构优化。结果表明该方法可以有效改善安全阀的启闭特性,使其关闭压力达到正常关闭要求。In view of the problem that the opening and closing characteristics of a safety valve can not meet the design requirements,liquid flow force analysis is needed.The flow field simulation and analysis was carried out to study the flow characteristics of the fluid inside the safety valve and the action law of liquid flow force.It is concluded that the main reason for the inadequate opening and closing characteristics of the safety valve is the unreasonable outlet structure of the safety valve.Then,based on the results of dynamic analysis and CFD simulation,the AMESim simulation model was built and the experimental curve was repeated.By increasing the outlet position and expanding the outlet diameter,the structure of the safety valve was optimized.The results show that this method can effectively improve the opening and closing characteristics of the safety valve and make its closing pressure meet the requirements of normal closing.

关 键 词：安全阀 启闭特性 关闭压力 CFD 

分 类 号：TH137[机械工程—机械制造及自动化]