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在石化厂内的一些特殊区域,输油管道的施工由于不允许动火作业、地段狭窄无法使用常规吊装机械进行吊装作业,一直是工程施工的难点。如何选用方便快捷、省时节料的施工方法是亟待解决的难题。以大连石化公司“增设航煤装船系统项目”为例,介绍了预制场内完成动火、管道喷砂除锈和防腐预制等工作,使用自制轨道及运管小车将管道从轨道首端运送至管道安装区域,使用可更换底座旋转式组合抱杆辅助吊装作业,采用法兰方式连接管段,采用人工把紧+手动扭矩扳手紧固+电动扭矩扳手方式核查螺栓紧固程度等施工工艺,解决了码头栈桥成品油管道安装难题。
In some special petrochemical plants, the construction of oil pipelines as a result of not allow hot work, the narrow section can not use conventional lifting machinery for lifting operations, has been the construction of the difficulties. How to choose a convenient, time-saving material construction method is an urgent problem to be solved. Taking Dalian Petrochemical Company as an example, this paper introduces the work of completing prefabricated fires, sandblasting and anti-corrosion prefabrication of prefabricated yards, using self-made orbital transport vehicles to transport pipelines from orbit End delivery to the pipe installation area, the use of interchangeable base Rotary combination pole supporting hoisting operations, the flange connection pipe, the use of manual + manual torque wrench tighten + electric torque wrench check bolt fastening construction techniques , To solve the dock trestle product pipeline installation problems.