高压差大流量工况下套筒式减压阀的减压过程研究  

Research on the Pressure Reduction Process of Sleeve Type Pressure Reducing Valve under High Pressure Difference and High Flow Conditions

作　　者：田捍卫 马哲辉 钱锦远[2] 孔静娴 金志江[2] TIAN Han-wei;MA Zhe-hui;QIAN Jin-yuan;KONG Jing-xian;JIN Zhijang(Henan Aerospace Hydraulic and Pneumatic Technology Co.,Ltd.,Zhengzhou 451191,Henan,China;Institute of Process Equipment,Zhejiang University,Hangzhou 310027,Zhejiang,China)

机构地区：[1]河南航天液压气动技术有限公司,河南郑州451191 [2]浙江大学化工机械研究所,浙江杭州310027

出　　处：《阀门》2024年第9期1092-1096,共5页Chinese Journal of Valve

摘　　要：随着工业技术的进步,许多行业面临高压差和大流量的工作条件,这对减压阀的设计提出了新的挑战。本文研究了一种套筒式减压阀在高压差大流量工况下的减压过程,通过数值模拟方法分析了不同开度与工况下套筒式减压阀内部的流场特性。研究发现,为了在保持氮气流量为2.5 kg/s的情况下实现从35 MPa至6 MPa的减压比,需要采用4级减压方案。此外,仿真结果还揭示了不同行程下套筒阀内部的压力和速度分布特征,特别是在节流孔处的压力急剧下降及流速增加的现象。本研究可为高压差大流量工况下套筒式减压阀的设计提供参考。With the advancement of industrial technology, many industries are facing working conditions with high pressure differentials and large flow rates, which pose new challenges to the design of pressure reducing valves.This article studies the pressure reduction process of a sleeve type pressure reducing valve under high pressure difference and high flow conditions, and analyzes the flow field characteristics inside the sleeve type pressure reducing valve under different opening degrees and operating conditions through numerical simulation methods.Research has found that to achieve a pressure reduction ratio from 35 MPa to 6 MPa while maintaining a nitrogen flow rate of 2.5 kg/s, a 4-stage pressure reduction design scheme is required.In addition, the simulation results also revealed the pressure and velocity distribution characteristics inside the sleeve valve under different strokes, especially the phenomenon of a sharp decrease in pressure and an increase in flow rate at the orifice.This study can provide a reference for the design of sleeve type pressure reducing valves under high pressure differences and high flow conditions.

关 键 词：减压阀 高压差 大流量 多级减压 

分 类 号：TH138.52[机械工程—机械制造及自动化]