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Automatic welding device for circular seam of steel pipe of pressure shaft and construction method

A technology for automatic welding and pressure steel pipes, applied to welding equipment, welding accessories, electrode support devices, etc., to achieve the effects of simplifying the construction process, improving welding efficiency, and saving engineering costs

Active Publication Date: 2022-04-15
新疆兵团水利水电工程集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide an automatic welding device and construction method for the circular seam of pressure shaft steel pipes, which can effectively solve the problems and deficiencies in the general use of manual electrode arc welding for circular welds in the installation process of pressure shaft steel pipes in hydropower stations; the automatic welding device is simple in structure, Easy to use, can not only improve the working environment, reduce labor intensity, but also improve welding efficiency and save engineering costs

Method used

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  • Automatic welding device for circular seam of steel pipe of pressure shaft and construction method
  • Automatic welding device for circular seam of steel pipe of pressure shaft and construction method
  • Automatic welding device for circular seam of steel pipe of pressure shaft and construction method

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Effect test

Embodiment 1

[0056] see Figure 1-10 , the automatic welding device for the girth seam of the pressure shaft steel pipe, comprising a walking frame structure 23 for carrying the submerged arc welding automatic welding system 21; The welding walking system 1 that moves circumferentially on the circular weld 6; the automatic submerged arc welding system 21 is connected to the flux delivery and recovery system 22 installed on the welding walking frame structure 17; the automatic submerged arc welding system 21. The welding walking system 1 and the flux feeding and recycling system 22 are connected with the automatic control system. The automatic welding device is simple in structure and easy to use. It can not only improve the working environment, reduce labor intensity, but also improve welding efficiency and save engineering costs. It can be used for fully automatic welding of steel pipe ring seams in pressure shafts. In the specific welding process, the entire walking frame structure 23 i...

Embodiment 2

[0065] see Figure 4-10 A method for constructing a pressure pipe shaft of a hydropower station by using an automatic welding device for the ring seam of a pressure shaft steel pipe comprises the following steps:

[0066] Step 1, automatic welding device assembly: according to the basic size of the penstock to be installed, make and select the specific model and size of the automatic welding device to be used in the subsequent welding process on site;

[0067] Step 2: Installation of the bottom section steel pipe: the installation of the first installed steel pipe 18 is carried out in the vertical shaft;

[0068] Step 3: Fixing of the bottom steel pipe: after the installation of the installed steel pipe 18 is completed, fill backfill concrete 5 between the installed steel pipe 18 and the shaft, and fix the installed steel pipe 18;

[0069] Step 4: docking of the steel pipes in the upper section: after the installed steel pipes 18 are fixed, the steel pipes 17 to be installed ...

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Abstract

The invention provides a pressure shaft steel pipe circular seam automatic welding device and a construction method. The pressure shaft steel pipe circular seam automatic welding device comprises a walking rack structure used for carrying a submerged-arc welding automatic welding system. The welding walking rack structure is provided with a welding walking system used for driving the welding walking rack structure to walk in the circumferential direction of an annular welding seam of the inner wall of the to-be-installed steel pipe. The automatic submerged-arc welding system is connected with a welding flux feeding and recycling system installed on the welding walking rack structure. And the automatic submerged-arc welding system, the welding walking system and the welding flux feeding and recycling system are connected with the automatic control system. The problems and defects caused by the fact that manual shielded metal arc welding is generally adopted for annular welding seams in the hydropower station pressure shaft steel pipe installation process are effectively solved; the automatic welding device is simple in structure and convenient to use, the working environment can be improved, the labor intensity can be reduced, the welding efficiency can be improved, and the engineering cost can be saved.

Description

technical field [0001] The invention belongs to the field of vertical shaft construction of pressure pipes in hydropower stations, and in particular relates to an automatic welding device and construction method for steel pipe ring seams in pressure shafts. Background technique [0002] At present, after the excavation and support of the pressure shaft of the hydropower station is completed, the penstock is installed in sections from bottom to top, and the concrete backfill is carried out in sections. Generally, penstocks are manufactured in sections in the workshop, and then transported to the shaft for on-site installation. The section length can be determined according to the requirements of transportation and installation. The usual construction method is to use lifting facilities to place the pressure steel pipe underground, after leveling, correcting and docking in place, use multiple ordinary electric welding machines and multiple welding workers to perform manual ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/18B23K9/32B23K9/28B23K9/133
CPCY02P70/10
Inventor 吴卫东王宗敏
Owner 新疆兵团水利水电工程集团有限公司
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