压力容器2017，Vol.34Issue(10)：57-62,6.DOI:10.3969/j.issn.1001-4837.2017.10.009
大直径衬环法兰的密封泄漏分析
Analysis on Leakage from Sealing of Ring Flange with Large Diameter
吴林涛 1邓自亮 1席建立1
作者信息
- 1. 西安核设备有限公司,陕西西安710021
- 折叠
摘要
Abstract
With the development of large sized equipment and constant improvement in operation parameter thereof,the flange size of equipment is getting larger and larger.With problem in sealing of flanged connection brought into view every now and then especially for the sealing of flange with large diameter,therefore,it is more imperative to solve the sealing problem of flange with large diameter.It is observed from a blow-by-blow analysis of three respects including sealing surface quality,gasket performance and bolt pre-tightening of butt welded ring flange with long neck and large diameter (DN2500) based on feedback of leakage in pressure testing that the leakage from flange sealing is due only to flange deflection and uneven sealing surface.Accordingly,the leakage problem in pressure testing is solved in an effective way by change of lining ring structure on flange sealing surface to cladding structure thereon.关键词
大直径/衬环法兰/试压泄漏/偏转变形/密封面不平整/垫片/预紧力Key words
large diameter/ring flange/leakage in pressure test/deformation due to deflection/uneven sealing surface/gasket/pre-tightening force分类
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吴林涛,邓自亮,席建立..大直径衬环法兰的密封泄漏分析[J].压力容器,2017,34(10):57-62,6.
