煤气与热力2024，Vol.44Issue(5)：22-25,40,5.
沉降对地下燃气管道阀井内法兰泄漏的影响
Influence of Settlement on Flange Leakage in Underground Gas Pipeline Valve Well
向素平 1周阳 2高明旭 1孙明烨 1陆景慧1
作者信息
- 1. 北京市煤气热力工程设计院有限公司,北京 100032
- 2. 北京市燃气集团有限责任公司第四分公司,北京 100176
- 折叠
摘要
Abstract
For urban gas pipeline valve wells,it is proposed to use the equivalent pressure method for flange leakage verification.Using CAESAR Ⅱ V2014 stress analysis software,the calculated axial stress of the flange should be less than the rated pressure of the flange.Taking the buried gas pipeline valve well with design pressure of 1.0 MPa and DN 500 mm as an example,the calculation method of the maximum settlement that the pipeline can with-stand is given from the perspective of preventing flange leakage.According to different working conditions,the factors affecting flange leakage are analyzed.The cal-culation results indicate that the greater the settlement of the upstream and downstream pipelines of the valve well and the differential settlement rate of the pipeline section,the greater the axial stress of the flange,and the greater the risk of flange leakage.The construction should be avoided directly below the valve well as much as possible.关键词
燃气管道阀井/法兰泄漏/应力校核/管道沉降量Key words
gas pipeline valve well/flange leakage/stress verification/pipeline settlement分类
建筑与水利引用本文复制引用
向素平,周阳,高明旭,孙明烨,陆景慧..沉降对地下燃气管道阀井内法兰泄漏的影响[J].煤气与热力,2024,44(5):22-25,40,5.
