Parametric design for the valve seat of a high-temperature and high-pressure valve inside wind tunnels  

作　　者：Fengwei HOU Haifeng SHU Binbin WU Chengliang YU Zhehui MA Wenqing LI Jinyuan QIAN 

机构地区：[1]Hypervelocity Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang,621000,China [2]Shanghai Koko Valve Group Co.,Ltd.,Shanghai,201802,China [3]Institute of Advanced Equipment,Zhejiang University,Hangzhou,310027,China [4]State Key Laboratory of Fluid Power Components and Mechatronic Systems,Zhejiang University,Hangzhou,310058,China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2025年第3期266-276,共11页浙江大学学报(英文版)A辑(应用物理与工程)

基　　金：supported by the National Natural Science Foundation of China(No.52175067);the Zhejiang Key Research&Development Project(No.2021C01021);the Natural Science Foundation of Zhejiang Province(No.LY20E050016);the Postdoctoral Fellowship Program of China Postdoctoral Science Foundation(CPSF)(No.GZC20241478)。

摘　　要：A high-temperature and high-pressure valve is the key equipment of a wind tunnel system;it controls the generation of high-temperature and high-pressure gas.To reduce the adverse impact of high-temperature and high-pressure gas on the strength of the valve body,a cooling structure is set on the valve seat.This can significantly reduce the temperature of the valve body and valve seat.The effects of its structure on the cooling characteristics and stress of the valve seat are studied,and six main parameters that can completely describe the geometry of the cooling structure are proposed.The central composite design method is used to select sample points,and the multi-objective genetic algorithm(MOGA)method is used for optimal structural design.A modification method according to the main parameters for the valve seat is proposed.The results show that the cooling structure weakens the pressure-bearing capability of the valve seat.Among the six main parameters of the valve seat,the distance from the end face of the lower hole to the Z-axis and the distance from the axis of the lower hole to the origin of the coordinates have the most obvious effects on the average stress of the valve seat.An optimum design value is proposed.This work can provide a reference for the design of high-temperature and high-pressure valves.

关 键 词：Control valve Valve seat OPTIMIZATION Parametric design 

分 类 号：TH137.5[机械工程—机械制造及自动化]