基于重要度公差叠加分析的固定球阀密封结构装配优化研究  

Research on Assembly Optimization of Sealing Structure of Fixed Ball Valve Based on Importance Tolerance Superposition Analysis

作　　者：黄晓云 夏胜建 全军 厉陈足 戴雄浩 杨建 HUANG Xiaoyun;XIA Shengjian;QUAN Jun;LI Chenzu;DAI Xionghao;YANG Jian(Baoyi Group Co.,Ltd.,Wenzhou 325105,China;Qilong Valve Co.,Ltd.,Wenzhou 325103,China)

机构地区：[1]保一集团有限公司,浙江温州325105 [2]祺隆阀门有限公司,浙江温州325103

出　　处：《机械制造与自动化》2025年第2期103-108,共6页Machine Building & Automation

基　　金：浙江省重点高新技术产品开发项目(浙经信技术【2021】111号)。

摘　　要：针对固定球阀装配后密封性能欠佳问题,以Q347F-150Lb固定球阀的阀座结构为研究对象。采用SolidWorks平台中的TolAnalyst插件以及多目标优化设计方法进行研究分析;以重要度为约束条件,以装配后最大尺寸、启闭转矩等为目标函数,以位置公差和形状公差为优化设计的变量;建立优化前、后的有限元模型,分析接触压力、应力及应变。研究结果表明:优化位置公差比形状公差的效果较好,可将关键位置的公差提升;基于有限元模拟方法,阐明了非连续接触密封结构开启过程中密封面接触压力、等效应力和等效应变的演变规律。基于TolAnalyst插件可快速获得对重要特征的公差分析结果,可为容差分配的优化提供理论基础。To improve the poor sealing performance of fixed ball valve after assembly,the seat structure of Q347F-150Lb fixed ball valve taken as the object of exploration,the TolAnalyst plug-in on the Solidworks platform and the multi-objective optimization design method are adopted for reserch and analysis.With the importance degree as the constraint,the maximum size after assembly,the opening and closing torque,etc.as the objective functions,and the position tolerance and shape tolerance as the optimal design variables,the finite element model before and after optimization was established to analyze the contact pressure,stress and strain.The results show that the effect of optimizing the position tolerance is better than the shape tolerance,and the tolerance of the key position can be increased.Based on the finite element simulation method,the evolution law of the contact pressure,equivalent stress and equivalent strain of the sealing surface during the opening of the discontinuous contact seal structure is clarified.Based on the TolAnalyst plug-in,the tolerance analysis results for important features can be obtained quickly and provide a theoretical basis for the optimization of tolerance assignments.

关 键 词：SOLIDWORKS 计算机辅助公差设计 固定球阀 公差分析 优化设计 

分 类 号：TH122[机械工程—机械设计及理论]