油气管道盗孔补板修复结构强度分析  

Analysis on Strength of Oil and Gas Transmission Pipeline with Drilled Hole Filled by Plate Structure

作　　者：孙东旭[1] 吴明[1] 赵玲[1] 谢飞[1] 于洋[1] 宁雯宇[2] 

机构地区：[1]辽宁石油化工大学石油与天然气工程学院,辽宁抚顺113001 [2]中国石油大学机械与储运工程学院,北京102249

出　　处：《工业安全与环保》2016年第7期5-7,共3页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金(50771053);中国石油化工股份公司项目(30250100-12-ZC0607)

摘　　要：运用非线性有限元计算方法,对管道补板结构在内压载荷作用下的应力状态进行分析,研究管道补板修复结构的承压薄弱点与最优修复尺寸。研究结果表明,补板结构导致管道开孔附近区域内应力分布不均匀,出现局部应力集中现象;补板结构的危险区为补板与管体交界处45°~90°局部范围;与管道壁厚相近的补板壁厚和3倍孔径的补板长度具有更佳的修复效果。This article analyzes the stress state of pipeline weld plate structure under the load of interior pressure by nonlinear FEM and furthermore. The weak point of bearing pressure of filled plated structure and the optimal size are also studied. The research results show that filled patch structure leads to the ununiform stress distribution of the pipeline opening and stress concentration is resulted. The dangerous zone is located in the scope 45° ~ 90° junction of filled plated and the pipeline body. The thickness of patch wall similar to pipe wall and patch length with three times of hole diameter have the better repairing effect.

关 键 词：管道开孔 补板 应力集中 最优尺寸 有限元 极限载荷 

分 类 号：TE973[石油与天然气工程—石油机械设备]