The Analysis of Bolted Flange Joints under Internal Pressure at High Temperature

摘要：

　　Working temperature,internal pressure and the creep of bolted flange joints are the direct factors that influencing the gasket stress of bolted flange joints,the tightness of the whole system will be reduced because of these factors.thus the security level of bolted flange connection will be affected.In this paper,the deformation coordination equation of bolted flange connection system,and the gasket creep equation are combined to study the effect of internal pressure on bolted flange connections under a certain bolt preload and operating temperature.The equation about the relationship of the gasket force and internal pressure is simplified,and the main objective of the work is the calculation of the time-correlated gasket force,flange rotation under the different internal pressure.The results show that when the internal pressure is greater,the gasket force is smaller,on the contrary,the leakage rate are greater.Through the relevant conditions,in a period of the safe operation time,the maximum working internal pressure is got when reaching the condition of corresponding level of tightness.

关键词： bolted flange joints internal pressure gasket force flange rotation leakage rate

作者: Xiaotao Zheng Yang Cheng Jiuyang Yu

作者单位: Wuhan Institute of Technology,Wuhan 430205,P. R. China

会议类型: 国际会议

会议名称: 2016 International Symposium on Structural Integrity，ISSI—2016(2016国际结构完整性研讨会)

会议地点: 天津

会议语种:英文

页码: 335-340

在线出版日期: 2016-05-26（万方平台首次上网日期，不代表论文的发表时间）