中国机械工程2025，Vol.36Issue(11)：2477-2485,9.DOI:10.3969/j.issn.1004-132X.2025.11.001
多工况下气体减压阀特性试验研究
Experimental Study of Characteristics of Gas Pressure Reducing Valves under Different Working Conditions
摘要
Abstract
Pressure reducing valves were often used in gas pipeline systems to control the downstream pressure.At present,the pressure reduction range of conventional small pressure reducing valves was small,and it was difficult to meet the pressure reduction demands under ultra-high pressure.A small pres-sure reducing valve with adjustable output pressure under ultra-high pressure was proposed,with an input pressure of 19～60 MPa and an output pressure of 7～13 MPa.By establishing a test platform and setting different upstream pressure and downstream resistance of the pressure reducing valves,the stability of the performance of the pressure reducing valves and the characteristic change were studied under four types of working conditions.Through experimental validation,the pressure reducing valve may maintain stable downstream pressure in ultra-high pressure usage scenarios.The response time of the valves after the pipe-line connection is between 0.5 and 6.0 seconds,with pressure fluctuations within 10 seconds after response being between 0.12%and 4.49%.The results indicate that the trend of pressure changes after the reduc-ing valves are related to the upstream pressure:when the upstream pressure decreases,the output pressure first declines and then rises,while when the upstream pressure is stable,the output pressure tends to de-crease.The results may guide the applications of the pressure reducing valves in hydraulic systems.关键词
高压气体减压阀/氮气/压力/流量Key words
high-pressure gas pressure reducing valve/nitrogen/pressure/flow rate分类
交通工程引用本文复制引用
秦斌,郝嘉旭,林静雯,张泉..多工况下气体减压阀特性试验研究[J].中国机械工程,2025,36(11):2477-2485,9.基金项目
国家自然科学基金(11902368) （11902368）
