摘要
通过对天然气汇管截面应力场的探讨,分析了汇管表面裂纹产生的原因并提出了相应预防措施。得出长庆油田第一采气厂出现表面裂纹的7台管汇是由于焊接和热处理工艺不当使残余应力过大所致。
Based on the discussion on the stress field of natural gas manifold section,an analysis is carried out about the causes of cracks appearance on the surface of manifold,together with some presentation of some corresponding preventive measures.It is concluded that 7 manifolds with surfacial cracks appearing in No.1 oil gas factory of changqing oilfields are due to the mcorrect technology of welding and heat treatment,whith makes the left stress too big.
出处
《石油工业技术监督》
2012年第1期16-17,共2页
Technology Supervision in Petroleum Industry
关键词
汇管
表面裂纹
原因分析
预防措施
manifold/pipeline
surface crack
cause analysis
preventive measures
