Multi-objective optimization of sealing structure of high temperature tri-eccentric butterfly valve

被引：0
|
作者：
Li S. [1 ,2 ]
Zhang B. [1 ,2 ]
Yin H. [1 ,2 ]
Zhang J. [1 ,2 ]
机构：
[1] School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou
[2] Machinery Industry Pump and Special Valve Engineering Research Center, Lanzhou University of Technology, Lanzhou
来源：
Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2023年 / 51卷 / 10期
关键词：
combined approximation mode; multi-objective optimization; sealing performance; thermo-solid coupling; tri-eccentric butterfly valve;
D O I：
10.13245/j.hust.230086
中图分类号：
学科分类号：
摘要：
Aiming at the problem of poor sealing performance of the three-eccentric butterfly valve under high temperature conditions，the design principle and characteristics of the three-eccentric butterfly valve were studied． The sealing performance of the triple eccentric butterfly valve under high temperature conditions was analyzed using finite element analysis． The sealing structure of the three-eccentric butterfly valve was modeled parametrically，and the parameters of the sealing structure were sampled and the simulation response values were calculated by the optimal Latin hypercube experimental design method． The combined approximate model of the sealing structure was constructed，and the accuracy was checked． Based on NSGA- Ⅱ (non-dominated sorting genetic algorithm-II)，the multi-objective optimization design of the sealing structure was carried out，and the optimal size of the sealing structure was obtained． After optimization，the sealing performance of triple eccentric butterfly valve is effectively improved，the average contact stress and maximum contact stress of the sealing surface are increased by 84.38% and 75.07% respectively compared with the pre-optimization period，and the circumferential contact stress is more uniformly distributed; meanwhile，the equivalent force of the sealing ring and the valve seat decreases，and it is reduced by 9.61% and 12.24% respectively compared with the pre-optimization period． © 2023 Huazhong University of Science and Technology. All rights reserved.
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页码：107 / 113
页数：6
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