基于紧密度要求的法兰优化设计  

Optimum Design for Flanges upon Tightness Control

作　　者：蔡仁良[1] 任建民[2] 

机构地区：[1]华东理工大学 [2]抚顺石油学院

出　　处：《压力容器》2002年第11期20-23,共4页Pressure Vessel Technology

摘　　要：传统的法兰设计准则依据强度失效判据 ,不能定量估计法兰接头的紧密性。本文采用密封设计准则 ,通过实验测定试验垫片的PVRC垫片系数 :a =0 .39、Gs=0 .0 12MPa和Gb=4 .5 7MPa ,并在此基础上 ,得到该垫片在各级紧密度参数Tp 下的最佳垫片装配应力 (Sga) opt与垫片应力变化量ΔS的关系 。The traditional design criteria for bolted flanged connections was based on the strength failure,which cannot evaluate in quantity the tightness of flange joints.This paper adopted the sealing design criteria,measures the sample PVRC gasket factors: a=0 39?G s= 0 012MPa and G b =4 57MPa by experiments,and obtained the relations of optimum gasket seat stress( S ga ) opt and change value of gasket stress ΔS at various tightness parameters,so that the optimum bolt preload of flange joints can be calculated.

关 键 词：紧密度 优化设计 法兰 密封 垫片 

分 类 号：TQ055.81[化学工程]