|本期目录/Table of Contents|

[1]张恩祥,任希航,王朝辉,等.弹簧式安全阀内部流场特性数值模拟研究[J].中国安全生产科学技术,2026,22(4):106-113.[doi:10.11731/j.issn.1673-193x.2026.04.013]
　ZHANG Enxiang,REN Xihang,WANG Zhaohui,et al.Numerical simulation study on the internal flow field characteristics of spring-loaded safety valves[J].Journal of Safety Science and Technology,2026,22(4):106-113.[doi:10.11731/j.issn.1673-193x.2026.04.013]
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弹簧式安全阀内部流场特性数值模拟研究

《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
22
期数:
2026年4期
页码:
106-113
栏目:
安全工程技术
出版日期:
2026-04-30

文章信息/Info

Title:
Numerical simulation study on the internal flow field characteristics of spring-loaded safety valves
文章编号:
1673-193X(2026)-04-0106-08
作者:
张恩祥; 任希航; 王朝辉; 陈佳; 盖佳林; 陈殿京
（1.中国运载火箭技术研究院，北京100076；
2.北京航天动力研究所，北京 100076；
3.国家特种泵阀工程技术研究中心，北京100076)
Author(s):
ZHANG Enxiang;  REN Xihang;  WANG Zhaohui;  CHEN Jia;  GAI Jialin;  CHEN Dianjing
（1.China Academy of Launch Vehicle Technology,Beijing 100076,China;
2.Beijing Aerospace Propulsion Institute,Beijing 100076,China;
3.National Engineering Research Center for Special Pumps and Valve,Beijing 100076,China）
关键词:
安全阀; 数值仿真; 流场分析
Keywords:
safety valve;  numerical simulation;  flow field analysis
分类号:
X933.4
DOI:
10.11731/j.issn.1673-193x.2026.04.013
文献标志码:
A
摘要:
为解决弹簧式安全阀在不同工况下内部流动机理认识不足的问题，以某型弹簧式安全阀为对象开展内部流场特性研究。基于三维可压缩数值模拟方法，设置不同入口压力与阀瓣开度的组合工况，重点考察排放能力、阀瓣开启力以及马赫数与温度场分布特征。研究结果表明：出口质量流量与出口面积平均速度随入口压力升高近似线性增大，小开度时最小流通面积位于阀座环隙并限制排放能力，开度增至约4.0 mm后控制截面转移至喷嘴喉口且不同开度下的流量与速度变化趋势逐渐收敛，阀瓣开启力随入口压力升高而增大、随开度增大而减小且在高压大开度工况下降幅更显著，多数工况内部流动达到或接近临界状态，高压小开度时阀座附近形成细长超声速射流并伴随强膨胀冷却，半定量估算表明其引发的局部热应力对结构安全构成潜在风险。研究结果可为弹簧式安全阀的选型与结构优化提供参考。
Abstract:
In order to address the insufficient understanding of internal flow mechanisms in spring-loaded safety valves under different operating conditions,the internal flow characteristics of a typical spring-loaded safety valve are investigated.Based on three-dimensional compressible numerical simulations,combined cases of different inlet pressures and valve-disc lifts are established,with emphasis on discharge capacity,disc opening force,and the distributions of Mach number and temperature.The results show that the outlet mass flow rate and area-averaged outlet velocity increase approximately linearly with increasing inlet pressure.At the small lifts,the minimum flow area is located at the valve-seat clearance and restricts the discharge capacity,whereas when the lift increases to about 4 mm,the controlling section shifts to the nozzle throat and the variations in flow rate and velocity under different lifts gradually converge.The disc opening force increases with inlet pressure but decreases with lift,and the reduction is more pronounced under high-pressure and large-lift conditions.In most cases,the internal flow reaches or approaches critical conditions,and at high pressure and small lift a slender supersonic jet accompanied by strong expansion cooling forms near the valve seat.A semi-quantitative estimation indicates that the resulting local thermal stress may pose potential risks to structural safety.These findings can provide a reference for refined selection and structural optimization of spring-loaded safety valves.

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备注/Memo

备注/Memo:
收稿日期： 2025-12-23
作者简介： 张恩祥，博士研究生，主要研究方向为高温高压安全阀设计。
通信作者： 陈殿京，博士，研究员，主要研究方向为安全阀制造及性能改进。
更新日期/Last Update: 2026-04-29