大口径干线管道环焊缝缺陷环氧套筒修复效果验证技术探讨  

Discussion on verification technology of repairing effect of epoxy sleeve for girth weld defect of large diameter trunk pipeline

作　　者：霍晓彤 雷宏峰 贾鹏军 杨锋平 姚欢 刘琰 蒋承君 HUO Xiao tong;LEI Hong feng;JIA Peng jun;YANG Feng ping;YAO Huan;LIU Yan;JIANG Cheng jun(Beijing Pipeline Co.,Ltd of Pipe China,Beijing 100101,China;State Key Laboratory of Performance and Structural Safety for Petroleum T ubular Goods and Equipment M aterials,Xi'an,Shaanxi,710077,China;Tubular Goods Research Center of CNPC,Shaanxi Xi’an 710077,China)

机构地区：[1]国家管网集团北京管道有限公司,北京100101 [2]石油管材及装备材料服役行为与结构安全国家重点实验室,陕西西安710077 [3]中国石油集团石油管工程技术研究院,陕西西安710077

出　　处：《内蒙古石油化工》2022年第5期68-73,共6页Inner Mongolia Petrochemical Industry

基　　金：国家管网集团北京管道有限公司重点科学研究与技术开发项目“大口径干线管道环氧套筒修复验证技术研究”。

摘　　要：通过使用管道拉伸试验机,设计了环焊缝外表面缺陷,并对人工缺陷进行了有限元仿真模拟,采用大口径输送管,利用封闭实物管道内压+轴向载荷,详细考虑测点布点方案,在缺陷位置、缺陷周边区域和完好管道位置以及钢质环氧套筒上都进行应力应变情况测试,加载方式及载荷量要求修复前后一致,利用载荷值和管道伸长量对比反映补强前后效果。In this paper,through the use of pipeline tensile testing machine,the outer surface defects of girth weld are designed,and the artificial defects are simulated by finite element method.The large diameter pipeline is used,the internal pressure of closed physical pipeline+axial load is used,and the scheme of measuring point distribution is considered in detail.The stress and strain are measured at the defect location,the defect surrounding area,the intact pipeline location and the steel epoxy sleeve Test results show that the loading mode and load amount are consistent before and after repair,and the load value and pipeline elongation are used to reflect the effect before and after reinforcement.

关 键 词：管道 环焊缝缺陷 环氧套筒 修复效果 

分 类 号：TG44:TE973.8[金属学及工艺—焊接]