|本期目录/Table of Contents|

[1]孙东旭,吴明,谢飞,等.油气管道盗孔接管修复结构强度分析[J].中国安全生产科学技术,2015,11(7):18-22.[doi:10.11731/j.issn.1673-193x.2015.07.003]
 SUN Dong-xu,WU Ming,XIE Fei,et al.Analysis on strength of nozzle repair structure for oil and gas pipeline with drilled hole[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(7):18-22.[doi:10.11731/j.issn.1673-193x.2015.07.003]
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油气管道盗孔接管修复结构强度分析
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
11
期数:
2015年7期
页码:
18-22
栏目:
学术论著
出版日期:
2015-07-30

文章信息/Info

Title:
Analysis on strength of nozzle repair structure for oil and gas pipeline with drilled hole
作者:
孙东旭1吴明1谢飞1于洋1程猛猛2
(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.中国石油新疆油田公司油气储运公司,新疆昌吉 831100)
Author(s):
SUN Dong-xu1 WU Ming1 XIE Fei1 YU Yang1 CHENG Meng-meng2
(1. College of Petroleum Engineering, Liaoning Shihua University, Fushun Liaoning 113001, China; 2. Oil and Gas Storage and Transportation Company, PetroChina Xinjiang Oilfield Company, Changji Xinjiang 831100, China)
关键词:
管道开孔接管应力集中最优尺寸有限元方法
Keywords:
pipeline opening hole nozzle stress concentration optimal size finite element method
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2015.07.003
文献标志码:
A
摘要:
管道打孔现象作为第三方破坏的主要形式威胁着油气输送管道的安全运行。焊接接管是一种常见的管道盗孔修复补强方法,但焊接接管导致管道几何形状突变,破坏了原有的应力分布。建立管道盗孔接管修复结构的有限元模型,运用非线性有限元方法对管道在内压载荷作用下的应力分布进行了计算。研究结果表明:焊接接管导致了管道开孔附近区域局部应力集中,且随内压增加应力集中面积逐渐加大;最大应力点出现在管道开孔0o处(管道开孔内壁轴向位置);在保证焊接工艺的情况下,较小的接管管径、与管道主体壁厚相近的接管壁厚具有更好的修复效果。
Abstract:
The safe operation of oil and gas pipeline has been threatened by drilled hole phenomenon as the main form of third party damage. Welding nozzle is a common repair and reinforcement method of pipeline with drilled hole. But this method causes the geometry mutation of pipeline and destroys the stress distribution. The finite element model of nozzle repair structure for pipeline with drilled hole was established. Furthermore, the stress distribution of pipeline under internal pressure load was also calculated by using the nonlinear finite element method. The results showed that the welding nozzle caused the local stress concentration near the area of opening hole, and the area of stress concentration increased with the increase of internal pressure. The maximum stress occurs at 0o position of the opening hole (axial position in the internal wall of opening hole). The smaller diameter of nozzle and the wall thickness of nozzle similar to the main pipeline can acquire the better repair effect under the condition of ensuring the welding process.

参考文献/References:

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更新日期/Last Update: 2015-07-30