Abstract: 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.

风洞用高温高压阀门阀座参数化设计研究

[1]AchuthanA, JayanathS, 2021. Stress analysis of variable ram blowout prevention valves. SPE Drilling & Completion, 36(3):647-657.

[2]AliyevaSY, AbbasovSH, 2023. Determination of the friction force between the draw rod and its guide in sucker rod well pumps and an analytical study of the stress deformation state of the valve assembly. Nafta-Gaz, 79(9):596-603.

[3]ArmijoKM, MendozaH, ParishJ, 2022. Vapor transport analysis of a chloride molten salt flow control valve. AIP Conference Proceedings, 2445(1):020001.

[4]BaoYH, WangHG, 2022. Numerical study on flow and heat transfer characteristics of a novel Tesla valve with improved evaluation method. International Journal of Heat and Mass Transfer, 187:122540.

[5]BrykM, 2022. Thermal-strength analysis of a slow closing valve during accelerated startup of a steam turbine. Journal of Power Technologies, 102(2):68-78.

[6]BrykM, BanaszkiewiczM, KowalczykT, et al., 2022. Slowly-closing valve behaviour during steam machine accelerated start-up. Case Studies in Thermal Engineering, 39:102457.

[7]CaoG, WuHC, ChuYM, et al., 2022. Optimal design and dynamic optimization of the main pressure regulating valve for heavy-duty automatic transmission using GA and PSO algorithms. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 44(3):94.

[8]DengX, 2022. Computational Analysis of Turbulence and Thermal Characteristics in Fluid Film Thrust Bearings. PhD Thesis, University of Virginia, Charlottesville, USA.

[9]FersaouiB, CerdounM, MayA, et al., 2022. Thermo-mechanical stress analysis within a steel exhaust valve of an internal combustion engine. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 236(1):635-654.

[10]FormatoA, GuidaD, IannielloD, et al., 2018. Design of delivery valve for hydraulic pumps. Machines, 6(4):44.

[11]GriceD, HankeL, MathiasJ, 2022. Analysis of stop valve leaks: environmental stress cracking of styrene copolymer valve stems. Journal of Failure Analysis and Prevention, 22(2):666-675.

[12]HwangSY, KimMS, LeeJH, 2020. Thermal stress analysis of process piping system installed on LNG vessel subject to hull design loads. Journal of Marine Science and Engineering, 8(11):926.

[13]JalaliA, DeloueiAA, 2019. Failure analysis in a steam turbine stop valve of a thermal power plant. Engineering Failure Analysis, 105:1131-1140.

[14]JawwadAKA, MahdiM, AlshabatatN, 2019. The role of service-induced residual stresses in initiating and propagating stress corrosion cracking (SCC) in a 316 stainless steel pressure-relief-valve nozzle set. Engineering Failure Analysis, 105:1229-1251.

[15]KunčickáL, KocichR, 2022. Effects of temperature (in)homogeneity during hot stamping on deformation behavior, structure, and properties of brass valves. Advanced Engineering Materials, 24(7):2101414.

[16]LiBB, LiRR, LiuXM, et al., 2022. Effects of operating parameters on flow force characteristics in a conical throttle valve. Industrial Lubrication and Tribology, 74(2):251-257.

[17]LiJF, XiaoMQ, SunY, et al., 2020. Failure mechanism study of direct action solenoid valve based on thermal-structure finite element model. IEEE Access, 8:58357-58368.

[18]LiWQ, ZhaoL, YueY, et al., 2022. Thermo-mechanical stress analysis of feed-water valves in nuclear power plants. Nuclear Engineering and Technology, 54(3):849-859.

[19]LinZH, YuLJ, HuaTF, et al., 2022. Seal contact performance analysis of soft seals on high-pressure hydrogen charge valves. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 23(4):247-256.

[20]MoralesLLD, SilvaGP, BarrosLDO, et al., 2023. Damage to fracture in offshore engineering materials under several stress states: blowout preventer valve application. Advances in Structural Engineering, 26(11):2025-2054.

[21]QianJY, XuJX, ZhongFP, et al., 2023. Solid-liquid flow characteristics and sticking-force analysis of valve-core fitting clearance. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 24(12):1096-1105.

[22]Shul’zhenkoMG, KolyadyukAS, 2021. Thermal strength of steam turbine shut-off and control valves body. Strength of Materials, 53(6):877-888.

[23]SunB, ZhaoT, Kurnianto PrayitnoYA, et al., 2021. Optimization of design variables for rotary regenerative thermal oxidizer high-temperature valve (rto-HTV) based on transient dynamics analysis and multi-objective optimization algorithm. AIP Advances, 11(12):125312.

[24]SundararajS, KrishnakumarP, AnirudhVR, et al., 2022. Effect of water pressure and temperature on spherical float of level sensing auto drain valve. Materials Today: Proceedings, 49:1490-1497.

[25]WangHL, ChenXY, 2022. Optimization of micromixer based on an improved Tesla valve-typed structure. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 44(4):143.

[26]WangLT, ZhengSK, LiuX, et al., 2021. Flow resistance optimization of link lever butterfly valve based on combined surrogate model. Structural and Multidisciplinary Optimization, 64(6):4255-4270.

[27]YuKK, XuJL, LiuS, et al., 2018. Starting characteristics and phenomenon of a supersonic wind tunnel coupled with inlet model. Aerospace Science and Technology, 77:626-637.

[28]ZhangH, ZhaoL, PengSE, et al., 2021. Thermal-fluid-structure analysis of fast pressure relief valve under severe nuclear accident. Nuclear Engineering and Design, 371:110937.

[29]ZhangTY, ZhouJZ, YangX, et al., 2022. Multi-objective optimization and decision-making of the combined control law of guide vane and pressure regulating valve for hydroelectric unit. Energy Science & Engineering, 10(2):472-487.

[30]ZhouX, ZhiXQ, GaoX, et al., 2022. Cavitation evolution and damage by liquid nitrogen in a globe valve. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 23(2):101-117.

[31]ZongCY, LiQY, LiKP, et al., 2022. Computational fluid dynamics analysis and extended adaptive hybrid functions model-based design optimization of an explosion-proof safety valve. Engineering Applications of Computational Fluid Mechanics, 16(1):296-315.