固定支架式双壁管的预制安装方法

为推广双壁管预制及安装技术,详细描述45 000m3 LNG运输船采用的一种固定支架式燃气双壁管的预制安装过程,主要包括双壁管的结构特点,几种基本型双壁管的成形方法与焊缝焊接顺序,双壁管在船上安装、试压及清洗的工序特点、难点和注意事项,可作为类似项目管理团队及相关人员的参考。

Prefabrication and Installation Method of Double-Wall Pipe with Fixed Support

In order to popularize the prefabrication and installation technology of double-wall pipe,the prefabrication and installation process of gas double-wall pipe with the fixed support used in the 45 000 m3 LNG carrier is described in detail, mainly including the structural characteristics of double-wall pipe, shaping methods and weld welding sequences of several basic double-wall pipes, and procedure characteristics, difficulties, and notes for double-wall pipe to install, make the pressure test, and clean on the ship, which can be used as a reference for the similar project management team and relevant personnel.