A method for fixing and welding movable pipelines in building construction

Abstract

The invention relates to a mobile type pipe fixing and welding method for building construction. The method includes the specific steps that two ports of a to-be-welded pipe are subject to butt joint in advance, and the position of the pipe is well adjusted; two fixing rings ate clamped to the two sides of a to-be-welded line of the to-be-welded pipe; three or more sliding fastening parts are placed into sliding grooves of the fixing rings so that the sliding fastening parts can be adjusted to appropriate positions, two tightening bolts on each sliding fastening part are screwed down, and the to-be-welded pipe can be stably fixed; and welding operation is carried out, after welding is completed, positioning connecting bolts are released, and the two fixing rings are taken down from the welded pipe. The mobile type pipe fixing and welding method has the beneficial effects that the fixing device is more flexible in opening alignment and convenient to demount, meanwhile, reducing the labor intensity, and improving the construction efficiency.

Description

technical field [0001] The invention relates to the technical field of pipeline welding, in particular to a fixed welding method for movable pipelines in building construction. Background technique [0002] In building construction, for example, in the construction of water supply and drainage pipes, it is often necessary to weld different metal pipes together. [0003] According to different construction objects and welding environments, the pipe fitting fixtures are divided into two types: inner fitting and outer fitting. Due to many obstacles, the outer fitting not only has many welding joints, but also restricts welding and grinding operations, and cannot complete the entire weld. The difficulty of welding increases and the quality of welding decreases. Therefore, it is only used for assembly and positioning, and it is removed after the positioning welding is completed, and then the formal welding is performed. However, with the advancement of welding methods, when usi...

AI Technical Summary

Problems solved by technology

However, with the advancement of welding methods, when using semi-automatic and automatic welding such as fully automatic hot wire TIG welding, if traditional external counterparts are used for positioning, tack welding is required. When the tack weld is large, root welding is likely to cause incomplete penetration, Poor fusion; the positioning solder joint is too small, and the strength is not enough to easily cause cracking. The high requirements for positioning welding increase the difficulty of welding

In addition, due to the relatively fixed position of the fastening bolts of the traditional external mouthpiece, it cannot be moved to any position, and the adjustment of the wrong side cannot achieve full coverage, and the quality of the mouthpiece is not easy to guarantee

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