长输管线中全焊接球形阀体的双重密封阀座设计  

Design of double-sealed valve seat for fully welded spherical valve body in long-distance pipeline

作　　者：程文洁[1] 高勇 邬佑靖 李永国 CHENG Wenjie;GAO Yong;WU Youjing;LI Yongguo(School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211816,China;Kelite Group Co.,LTD,Longyou 324400,China)

机构地区：[1]南京工业大学机械与动力工程学院,江苏南京211816 [2]克里特集团有限公司,浙江龙游324400

出　　处：《实验技术与管理》2022年第2期100-104,共5页Experimental Technology and Management

基　　金：江苏省高等教育教改研究立项重点课题(2019JSJG024)。

摘　　要：为解决长输管线中全焊接球阀的泄露问题,设计了一种基于双重密封原理的阀座。根据弹性壳体不连续理论及等效线性化方法,按照美国机械工程师协会(ASME)标准对应力分类,以相应的应力强度极限评定阀座和全焊接球形阀体的结构强度,分析其应力分布特征,并进行泄漏检测试验,结果表明基于双重密封阀座的全焊接球阀具有良好的密封性能。In order to solve the leakage problem of fully welded ball valve in long distance pipeline, a valve seat based on double sealing principle is designed. Based on the elastic shell discontinuity theory and equivalent linearization method, the stress is classified according to the American Society of Mechanical Engineers(ASME)standard, and the structural strength of the seat and the fully welded spherical valve body is evaluated by the corresponding stress intensity limit. The stress distribution characteristics are analyzed, and the leakage detection test is carried out. The results show that the fully welded spherical valve based on the double sealing seat has good sealing performance.

关 键 词：长输管线 球阀 双重密封阀座 

分 类 号：TB472[一般工业技术—工业设计]