Welding method for last girth weld in boiler barrel
A welding method and technology for girth welds, which are applied to the welding field of the last girth weld in the drum, can solve the problems of difficulty in guaranteeing the quality of girth welds, low efficiency, and inability to use automatic welding.
Inactive Publication Date: 2015-06-03
HENGYANG DACHENG BOILER
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Problems solved by technology
[0002] For the shell boilers in the prior art, after the front and rear tube plates seal the drum, automatic welding cannot be used for the last girth weld in the drum, and manual welding can only be used. Manual welding is not only inefficient, but also the workers The labor intensity is high, and the quality of the girth weld is difficult to guarantee
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[0008] The preferred embodiment of the present invention is: a welding method for the last girth weld in the drum. First, in terms of boiler 2 design, a smoke pipe should be designed at the center of the tube plate 23, so that the tube plate 23 has a center Round hole 24; Secondly, change the connection mode between the head 12 of the automatic welding machine 1 and the support 11 to be flexibly connected by a round pipe 13; 21 into the drum, and then pass the round tube 13 through the central hole 24 of the tube plate 23 to connect the machine head 12 in the drum with the welding machine bracket 11 outside the drum, and then adjust the welding torch of the machine head 11 Align the girth weld 22 in the drum, and finally start the automatic welding machine 1 to perform rotary welding on the girth weld 22 .
[0009] By adopting the above technical scheme, automatic welding can be performed on the last girth weld in the drum, thereby reducing the labor intensity of workers and i...
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The invention relates to the boiler field, and aims to provide a method for automatically welding the last girth weld in a boiler barrel. In order to solve the technical problem, the technical scheme is that firstly, a smoke tube is designed on the central position of a tube sheet in terms of the boiler design, so that a central circular hole is formed in the tube sheet; secondly, the connecting mode of a machine head and a support of an automatic welding machine is changed to a connecting mode by a circular tube in a moving manner; when in use, the machine head and a cable are firstly moved from the boiler manhole into the boiler barrel, then a circular tube passes through the central circular hole of the tube sheet and then the machine head located in the boiler barrel and the welding machine support located outside the boiler barrel are connected, afterwards, a welding torch on the machine head is adjusted to aim at a girth weld in the boiler barrel, finally, the automatic welding machine is started to weld the girth weld in a rotating manner. By adopting the technical scheme, the last girth weld which is in the boiler barrel can be automatically welded, so that the labor intensity of workers is reduced, and the working efficiency is improved.
Description
technical field [0001] The invention relates to the field of boilers, in particular to a welding method for the last girth weld in a boiler drum. Background technique [0002] For the shell boilers in the prior art, after the front and rear tube plates seal the drum, automatic welding cannot be used for the last girth weld in the drum, and manual welding can only be used. Manual welding is not only inefficient, but also the workers The labor intensity is high, and the quality of the girth weld is also difficult to guarantee. Contents of the invention [0003] The technical problem to be solved by the invention is to provide an automatic welding method for the last girth weld in the drum. [0004] In order to solve the above technical problems, the technical solution of the present invention is: firstly, in terms of boiler design, a smoke pipe should be designed at the center of the tube plate, so that the tube plate has a central round hole; secondly, the machine head...
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Login to View More IPC IPC(8): B23K9/028
CPCB23K9/0288
Inventor 刘钧李江平
Owner HENGYANG DACHENG BOILER