油气田集输管道压接接头与钢管等强力学计算与分析

Uniform Strength Mechanical Calculation and Analysis of Pressure Joint and pipe of Gathering Pipeline in Oil and Gas Field

油气田集输管道采用压接技术,其压接接头不存在焊接接头的隐患,连接效率高,施工成本低。文章针对D159mm×8mm无缝钢管进行了压接工艺条件下力学计算与分析,利用有限元方法模拟无缝钢管冷态下胀口和内外钢管承插配合过程,确定了内外钢管对接承插过盈量及搭接长度,分析了压接接头的受力情况,给出了压接接头与钢管等强的条件,为压接接头配合参数设计及工艺试验提供了依据。

Mechanical calculation and analysis on D159mmx8mm seamless steel pipes under pressurejoint condition are carried out. The finite element method is applied to simulate the cold expanding of the joint as well as the bell and spigot fitting process of internal and external pipes, therefore to determine the interference and overlapping length, analyze the joint forces and give the uniform strength condition of joint and pipe. The method provides a basis of pressure joint matching design and technological test.