用于油气输送的内防腐钢质管道现场连接方法与安全性对比

文章主要以碳钢管内部带防腐涂层的油气输送管道现场连接方法为研究对象,在常规连接方式即现场焊接加现场补口的基础上,结合长期生产和施工经验,提出了改善性或创新型的连接方式,如不锈钢管环过渡连接、管端扩口加衬套过渡连接、管端堆焊加现场焊接等连接形式,有效地解决了现场焊接后需要补口的技术难题,并从适用性、安全性、经济性等方面对不同连接方式进行了简要对比分析。

This paper mainly takes the on-site connection method of oil and gas transmission pipeline with anticorrosive coating inside carbon steel pipe as the research object.On the basis of conventional connection mode,that is,on-site welding and on-site repair,this paper takes into consideration the author’s long-term production and construction experience,puts forward improved or innovative connection modes,such as stainless steel pipe ring transition connection,pipe end expansion plus bushing transition connection,pipe end surfacing welding plus field welding,and so on.The technical problem of patching after on-site welding is effectively solved,and different connection modes are briefly compared and analyzed from the aspects of applicability,safety,economy and so on.