The invention relates to a method for installing a large-diameter air pipe in a limited space. The method comprises the following steps that S1, a plurality of short air pipe sections are welded together in an inner field to form at least two sections of long air pipes; S2, an internal reinforcement and an external reinforcement are welded to each section of air pipe; S3, a lifting lug is welded to a pipe opening of each section of air pipe; S4, the periphery of the outer wall of the air pipe is provided with touch nails and coated with heat preservation and insulation; S5, a temporary ladder and a temporary operation platform are built in the air pipe; S6, the air pipe is hoisted into the limited installation space on site; S7, at least two sections of long air pipes are welded together on the temporary operation platform; and S8, the temporary operation platform and the temporary ladder are dismantled. By the adoption of the method, the working procedure is moved forward, namely field work is conducted in the inner field, the hoisting frequency and the field welding workload are greatly reduced, and pipe folding construction can be well completed by using the ladder and the platform in the air pipe.

    本发明涉及一种大口径风管在有限空间的安装方法,其可包括以下步骤:S1、在内场将多个较短风管段焊接在一起,形成至少两节较长的风管;S2、在每节风管上焊接内部加强件和外部加强件;S3、在每节风管的管口处焊接吊耳;S4、在风管外壁四周打上碰钉及包覆保温绝缘;S5、在风管内搭建临时梯子和临时作业平台;S6、在现场将风管吊装到有限安装空间中;S7、在临时作业平台上将至少两节较长的风管焊接在一起;S8、拆除临时作业平台和临时梯子。采用本发明方法,工序前移,即现场工作内场做,大大降低了吊装次数和现场焊接工作量,并且通过使用风管内部的梯子和平台就能很好完成合拢管施工问题。


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    Title :

    Method for installing large-diameter air pipe in limited space


    Additional title:

    一种大口径风管在有限空间的安装方法


    Contributors:
    XU FENG (author) / LIN QIHAN (author)

    Publication date :

    2021-08-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F16L PIPES , Rohre / B23K Löten , SOLDERING OR UNSOLDERING / B63J Hilfsanlagen auf Schiffen , AUXILIARIES ON VESSELS



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