摘要
上升下降液管是乙烯装置裂解炉工程施工中的一个重点和难点,压力等级高,设计及操作温度高,焊缝多,安装角度复杂。文章通过将规格为D 273 mm×25.4 mm的碳钢90°弯头现场切割成84.3°弯头和60°弯头的施工实践,阐述了不规则弯头加工的新工艺,介绍了使用的设备、工具材料及其加工过程,对手工切割法和线式切割法进行了比较,为同类化工装置施工中各种不同规格及材质的不规则管件坡口加工提供了新的施工经验。
The ascending and descending liquid tube installation is a key and difficult matter in the construction of cracking furnace of ethylene facility because of high pressure grade,high design and operation temperatures,many bends and complicated installation angles.With the field construction case of cutting a D 273 mm × 25.4 mm carbon steel bend into a 84.3° bend and a 60° bend,this paper illustrates the new processing of irregular bends and needed devices and tools,and compares the manual cutting method and wire cutting method.It provides new beveling experience for those irregular bends of different materials and with different specifications used in similar type petrochemical facilities.
出处
《石油工程建设》
2011年第2期45-46,86,共2页
Petroleum Engineering Construction
关键词
石油化工装置
不规则角度弯头
坡口加工
petrochemical facilities
ascending and descending liquid tube
bends with irregular angles
beveling
