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Welding device and process applied to large water conveying pipe in tunnel

A technology for welding devices and water pipes, which is applied to welding equipment, welding accessories, manufacturing tools, etc., and can solve the problems of being unable to limit the original shape of easily deformable components such as large-scale water pipes, and unable to guarantee welding accuracy, etc.

Active Publication Date: 2021-10-19
北京城乡建设集团有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent can meet the needs of a single and long welding process, but it does not involve a deformation adjustment structure, and cannot limit the original shape of easily deformable components such as large-scale water pipes, so that the accuracy of welding cannot be guaranteed

Method used

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  • Welding device and process applied to large water conveying pipe in tunnel
  • Welding device and process applied to large water conveying pipe in tunnel
  • Welding device and process applied to large water conveying pipe in tunnel

Examples

Experimental program
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Effect test

Embodiment 1

[0050] The invention provides a butt welding process for large-scale water delivery pipes in tunnels, which can adjust the deformation of large-size water delivery pipes so that the cross-sectional roundness is within an appropriate range, and can adjust the height and height of the water delivery pipes according to actual needs. The angle is adjusted, especially the water pipe to be welded is rotated, so that the water pipe to be welded and the second water pipe are butted with each other without misalignment to form an annular butt weld with uniform weld size.

[0051] The specific steps of the welding process are as follows:

[0052] (1) Clean up the dirt on the groove surface of the two large-size water pipes to be welded and grind them;

[0053] (2) Use the butt welding device to adjust the distance between the pipe to be welded and the second pipe body sent into the tunnel, the angle between the axes, and the dimensional deformation and roundness of the two water pipes; ...

Embodiment 2

[0094] The invention provides a water pipe butt welding device for welding between large-scale water conveying pipe joints for water resource transportation in an underground tunnel. It can selectively adjust the angle, spacing, height and roundness of the two water pipes according to the docking situation of the two water pipes, so that the butt welding end faces of the two water pipes can be docked with equal gaps, thereby avoiding large Due to the deformation of the butt port size, the diameter of the water pipe cannot be well butt welded, or the welding is not in place, and the welding quality is not up to standard.

[0095] According to a specific embodiment, such as figure 1 As shown, the butt welding device includes a welder assembly 1 , a butt support assembly 2 , a water pipe support assembly 3 , a butt positioning assembly 4 , a support shaft assembly 5 and a drive assembly 6 . The circular track of the welding machine assembly 1 is installed on a certain section of...

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Abstract

The invention relates to a welding device and process applied to a large water conveying pipe in a tunnel. The welding device comprises a welding machine assembly capable of welding a butt joint seam of the water conveying pipe, and the welding machine assembly is adjustably installed on a supporting shaft assembly, so that when the supporting shaft assembly is arranged in the to-be-welded water conveying pipe in a penetrating mode, the working position of the welding machine assembly can be continuously changed on a preset rail in the circumferential direction of a welding seam and / or the axial direction of the water conveying pipe, and then continuous welding of the welding seam is completed; the supporting shaft assembly at least comprises an outer sleeve rod and an inner shaft rod, and the outer sleeve rod drives the to-be-welded water conveying pipe to move through a butt joint supporting assembly and a water conveying pipe supporting assembly which are arranged on the surface of the outer sleeve rod and can support and limit the to-be-welded water conveying pipe; the outer sleeve rod is arranged on the inner shaft rod in a sleeving mode in the mode that the outer sleeve rod can drive the to-be-welded water conveying pipe to rotate or horizontally move; and the supporting shaft assembly can adjust the position of the to-be-welded water conveying pipe, so that the to-be-welded water conveying pipe can be in butt joint with the second water conveying pipe without dislocation.

Description

technical field [0001] The invention relates to the technical field of pipe butt welding, in particular to a welding device and process applied to large water pipes in tunnels. Background technique [0002] Large-size water pipes used in tunnels are widely used in water intake projects, but the project has high requirements for materials, difficult construction, many installation details, and complicated precautions. [0003] The large-diameter water pipeline with a diameter of up to 2600mm has the following obvious characteristics: the internal water pressure it can withstand can reach 3.0MPa, and its elongation, stiffness, and tensile strength are relatively large; the pipe fittings have complete specifications and can meet various installation needs; Various interfaces, convenient disassembly and assembly, strong ability to withstand local subsidence, and convenient maintenance; usually the outer surface is sprayed with zinc and asphalt for anti-corrosion, and has strong ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/235B23K9/167B23K9/32
CPCB23K9/235B23K9/167B23K9/32
Inventor 李勇张立民赖阳旭张树志张小超莫新海
Owner 北京城乡建设集团有限责任公司