基于Kriging模型的楔形闸阀结构优化 及密封性能分析  

Sealing Performance Analysis and Structure Optimization of Wedge Gate Valve Based on Kriging Model

作　　者：张立强[1] 齐长鑫 陈高鹏 张延斌 王章章 林男 ZHANG Li-qiang;QI Chang-xin;CHEN Gao-peng;ZHANG Yan-bin;WANG Zhang-zhang;LIN Nan(School of Energy and Power Engineering,Lanzhou University of Technology;Wenzhou Institute of Pump and Valve Engineering,Lanzhou University of Technology;KCM Valve Co.,Ltd.)

机构地区：[1]兰州理工大学能源与动力工程学院 [2]兰州理工大学温州泵阀工程研究院 [3]凯喜姆阀门有限公司

出　　处：《化工机械》2021年第3期390-396,共7页Chemical Engineering & Machinery

基　　金：甘肃省自然科学基金项目(17JR5RA120)。

摘　　要：以NPS12—Class150楔形闸阀为研究对象,对闸阀阀体中腔加强筋结构与位置进行正交试验设计,通过Kriging代理模型对正交设计结果进行曲面插值后,利用遗传算法对Kriging代理模型求取最优值,实现闸阀阀体强度及其密封性能优化。数值模拟验证结果表明:与优化前相比,优化后的闸阀最大等效应力减小了29.97%,最大位移量减小了44.31%,最小密封比压从0MPa增加到16.243MPa,且密封间隙为0mm。Through taking NPS12—Class150 wedge gate valve as the research object,the orthogonal experiment on both structure and position of the ribs in the gate valve body was designed.After making use of Kriging proxy model to interpolate the orthogonal design results,the Kriging proxy model’s optimal value was obtained by the genetic algorithm to realize optimization of the strength of the gate valve body and its sealing performance.Simulation results showed that,compared with pre-optimization,the maximum equivalent stress of the gate valve optimized is reduced by 29.97%along with the maximum displacement reduced by 44.31%,and the minimum seal specific pressure is increased form 0MPa to 16.243MPa together with 0 mm sealing gap.

关 键 词：楔形闸阀 密封 结构优化 Kriging代理模型 数值模拟 

分 类 号：TQ055.81[化学工程]