输气管道应力影响因素分析  

Analysis on Factors Affecting Stress in Gas Pipeline

作　　者：沙晓东[1] 陈晓辉 黄坤[3] 卢思源[3] 卢泓方[3] 

机构地区：[1]中国石化北京天然气分公司,北京100029 [2]中国石油昆仑燃气西南分公司,四川成都610023 [3]西南石油大学石油工程学院,四川成都610500

出　　处：《天然气与石油》2013年第1期1-4,7,共4页Natural Gas and Oil

基　　金：四川省重点学科建设项目资助(SZD0416)

摘　　要：长输管道沿线地形复杂多变,由于管道自重、内压、温度等因素,导致管道环向应力值、温度应力值等易超过管材的许用应力,发生管道的失效破坏,故研究输气管道在运行过程中的应力影响因素显得尤为重要。使用管道应力分析软件CAESARⅡ对不同管径的输气管道在不同压力、温度下的平均应力情况进行分析,得出结论:随着管径的增加,温度对管道应力的影响逐渐增大,压力对管道应力的影响逐渐减小。Terrain along long distance gas pipeline is complex and such factors as dead load,internal pressure and temperature of pipeline may result in pipeline hoop stress and temperature stress more than allowable stress of pipe material,which will lead to pipeline failure.Therefore,it is particularly important to study factors affecting stresses in gas pipeline operation.Applied is the pipeline stress analysis software CAESAR II to analyze the average stress of pipelines with various diameters.Analysis results show that diameter increase will lead to more effect of temperature on pipeline stress and less effect of pressure on pipeline stress.Such results provide certain safety basis for pipeline design and have referable engineering value.

关 键 词：输气管道 应力 管径 温度 压力 CAESARⅡ 

分 类 号：TE973[石油与天然气工程—石油机械设备]