[1]孙海生.焊接弯头下游腐蚀穿孔有限元分析[J].焊管,2014,37(1):65-67.[doi:1001-3938(2014)01-0065-03]
 SUN Haisheng.Downstream Corrosion Perforation Finite Element Analysis of Welded Elbow[J].,2014,37(1):65-67.[doi:1001-3938(2014)01-0065-03]
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焊接弯头下游腐蚀穿孔有限元分析
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
37
期数:
2014年第1期
页码:
65-67
栏目:
经验交流
出版日期:
2014-01-28

文章信息/Info

Title:
Downstream Corrosion Perforation Finite Element Analysis of Welded Elbow
文章编号:
1001-3938(2014)01-0065-03
作者:
孙海生
(甘肃蓝科石化高新装备股份有限公司,兰州 730070)
Author(s):
SUN Haisheng
(Lanpec Technologies Limited,Lanzhou 730070, China)
关键词:
焊接管道弯头腐蚀穿孔
Keywords:
weldingpipelineelbowcorrosion perforation
分类号:
TG172
DOI:
1001-3938(2014)01-0065-03
文献标志码:
B
摘要:
某焊接输油管道在服役中发生了腐蚀穿孔失效,宏观检查发现弯头与直管段间对焊焊缝余高严重凸起,弯头处堵塞14 mm的煤焦油层,弯头下游管壁明显减薄并且有局部穿孔现象。通过ANSYS有限元分析软件对流体模拟并进行失效分析,结果表明,现场焊接中采用不当的焊接工艺,使管道内壁焊缝严重凸起是导致管道腐蚀穿孔失效的根本原因。最后提出厚壁管道焊接时应进行带钝边的V形坡口加工。
Abstract:
The corrosion failure occurred in certain welding pipeline used to transport crude oil. Through macroscopic examination, it found that the weld reinforcement of butt protruded greatly between elbow and straight pipe, 14 mm coal tar blocked in the elbow, the pipe wall of the elbow downstream reduced and local perforation phenomenon appeared. Using ANSYS finite element analysis software to simulate fluid and analyze failure. The result indicated that the inappropriate welding process in field made the weld of pipeline inside wall extrude severely, which caused corrosion perforation failure. Finally, it put forward the heavy wall thickness pipe should be processed V groove with a root face.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2013-09-01
作者简介:孙海生(1986—),男,硕士,助理工程师,主要从事化工设备设计与研发工作。
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