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Manifold anti-deformation welding process

A welding process and anti-deformation technology, applied in welding equipment, manufacturing tools, metal processing, etc., can solve the problems of condensation and bending deformation of the manifold, high labor intensity, and large deformation of the manifold, so as to ensure welding quality and improve production. Efficiency, low manufacturing cost effect

Inactive Publication Date: 2020-11-13
胜利油田华滨实业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When cooling, the shrinkage caused by thermoplastic deformation in the high-temperature area is large, and the shrinkage in the low-temperature area is small. This unbalanced shrinkage leads to condensation and bending deformation of the header. If improper measures are taken, the entire header may be scrapped.
[0003] Due to the emergency repair of oilfield pipelines and the rapid commissioning of new wells, workers need to speed up the construction progress while ensuring the quality of the project. For the welding of the valve group, there is a problem that the header pipe is deformed after welding. The construction period of the current overall heating method Long, labor-intensive, high cost

Method used

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  • Manifold anti-deformation welding process

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0022] The manifold anti-deformation welding process includes the following steps:

[0023] (1) Prepare the mold: Take two steel pipes 1 of the same size and weld them side by side, and weld two rectangular blocks 2 symmetrically on the edge of one end of the steel pipes as the fixed end of the manifold. The distance between the two rectangular blocks is slightly larger than that of the manifold The outer diameter of the pipe; the other end of the steel pipe is welded with a fixed bracket 3 as the header control end;

[0024] (2) Manifold deformation: put the manifold 5 to be welded on the mold, where one end of the manifold is welded together with the two rectangular blocks 2 at the fixed end, and the other end of the manifold passes through the fixed bracket 3 at the control end, Then the jack 4 is placed between the header pipe 5 and the fixed bracket 3, ...

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Abstract

The invention discloses a header reverse deformation welding process. The header reverse deformation welding process comprises the following steps of mould preparation, header deformation, branch pipe welding and header cutting. The welding process further improves and innovates an original method that a deformed valve set is subjected to flame heating and mechanical straightening, reverse thinking is conducted on welding deformation, header welding is quickly completed, the standard requirement is met, and meanwhile the purposes of personnel reducing and material saving are achieved.

Description

technical field [0001] The invention belongs to the technical field of welding, and in particular relates to a reverse deformation welding process for header pipes. Background technique [0002] During the prefabrication of the valve group in the metering room, during the cutting and welding process, the header pipe on the valve group cannot be freely elongated due to thermal expansion in the high temperature area, and is hindered by the rigidity of the surrounding low temperature area, resulting in thermoplastic deformation. When cooling, the shrinkage in the high-temperature area due to thermoplastic deformation is large, and the shrinkage in the low-temperature area is small. This unbalanced shrinkage leads to condensation and bending deformation of the header. If improper measures are taken, the entire header may be scrapped. [0003] Due to the emergency repair of oilfield pipelines and the rapid commissioning of new wells, workers need to speed up the construction prog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K28/00B23K31/00B23K101/06
CPCB23K28/00B23K31/003B23K2101/06
Inventor 高鹏石瑞文李长龙崔英杰王泽勇李佩
Owner 胜利油田华滨实业有限公司
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