Auxiliary device for welding of collection boxes

Abstract

The invention belongs to the technical field of manufacturing of collection boxes, and particularly relates to an auxiliary device for welding of the collection boxes. The auxiliary device comprises connecting plates used for connecting the two ends of the first collection box and the second collection box, and an adjustable-length supporting regulation unit located between the first collection box and the second collection box. According to the auxiliary device provided by the invention, due to joint effects of the connecting plates and the supporting regulation unit, deformation of the collection boxes in the direction opposite to that of welding deformation is generated, so that post-welding deformation is offset or compensated, and accordingly post-welding deformation is avoided; and operation personnel can perform welding operation on the two collection boxes at the same time, and the machining efficiency can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of header manufacturing, in particular to an auxiliary device for header welding. Background technique [0002] The header is a pipe fitting for mixing the working fluid of the boiler and ensuring uniform heating of the working fluid. Usually, the furnace wall of an industrial boiler is composed of rows of sub-pipes (water-cooled walls) spliced ​​together, but the boiler is large in size and complex in structure, and it cannot be guaranteed that the heat absorption of the working fluid in all sub-pipes is the same, different There is a lot of difference in the heat absorption of the parts. Installing the header can make the working fluid in each branch pipe converge here, and then distribute it to the next level of branch pipes. This can reduce the heat deviation, and make the heat absorption and flow of the working fluid and the cooling of the boiler , The thermal efficiency of the boiler has been optimize...

AI Technical Summary

Problems solved by technology

In the prior art, I-beams are generally placed at the bottom of both ends of the header, and the operator welds the pipe joints while holding the header with his hands. After the welding is completed, the curved part of the header is corrected, which is inconvenient to operate and The processing steps are cumbersome and inefficient

Some headers are equipped with reinforcement plates on the opposite side of the branch pipes. During processing, the pipe joints and reinforcement plates are spot-welded on the opposite sides of the box body, and then the pipe joints are fully welded on the collection box in turn. on the box to prevent box deformation, but this method has high production cost and poor anti-deformation effect, and the produced header takes up a lot of space and has a small scope of application

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