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A welding protection device for the inner wall of a pipeline

A protection device and pipeline technology, applied in welding equipment, welding equipment, auxiliary equipment, etc., can solve the problem of wasting protective gas, etc., and achieve the effects of avoiding waste, uniform distribution of air flow, and ensuring quality

Active Publication Date: 2021-12-28
CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a welding protection device for the inner wall of the pipeline, which is used to solve the technical problem of wasting protective gas when welding the inner wall of the pipeline in the prior art

Method used

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  • A welding protection device for the inner wall of a pipeline
  • A welding protection device for the inner wall of a pipeline
  • A welding protection device for the inner wall of a pipeline

Examples

Experimental program
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Embodiment 1

[0027] Such as Figure 1 to Figure 5 As shown, the protection device includes an inflatable tube 1 for transporting protective gas and an air diffuser structure arranged on the inflatable tube 1. The second diffuser tube 2 on the outer peripheral side of the trachea 8, the first diffuser tube 8 is provided with a first diffuser hole 9, the second diffuser tube 2 is provided with a second diffuser hole 4, the first diffuser tube 8 and the second diffuser A diffuser layer 7 is also arranged between the two diffuser pipes 2, and a diffuser channel is arranged in the diffuser layer 7, so that the protective gas can be evenly diffused from the diffuser structure.

[0028] Specifically, the inflatable tube 1 in this embodiment is a flexible tube, specifically a rubber tube, a plastic tube, a fiber tube, etc. The design of the tube enables the protection device to adapt to curved tubes. In other embodiments, the material of the gas tube 1 can also be a material with a small amount o...

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Abstract

The invention relates to a welding protection device for the inner wall of a pipeline. It includes an inflatable tube for transporting protective gas and an air diffuser structure arranged on the inflatable tube, the air diffuser structure includes a first diffuser tube communicated with the inflatable tube and a second diffuser tube arranged on the outer peripheral side of the first diffuser tube, The first diffuser tube is provided with a first diffuser hole, the second diffuser tube is provided with a second diffuser hole, a diffuser layer is also arranged between the first diffuser tube and the second diffuser tube, and the diffuser Diffusion channels are arranged in the layer so that the protective gas can be evenly dispersed from the gas diffusion structure. By adopting the welding protective device for the inner wall of the pipeline of the present invention, the protective gas can be quickly overflowed at the weld seam, which saves the filling time of the protective gas and improves the preparation efficiency of the preliminary work.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a welding protection device for the inner wall of a pipeline. Background technique [0002] When welding titanium alloy pipes, due to welding heat, the welding part and its surroundings are easily oxidized, resulting in a decrease in the mechanical properties of the pipes and affecting the quality of the pipes. Therefore, it is necessary to protect the inner and outer walls of the titanium alloy pipes with inert gas during welding. At present, the protection of the inner wall usually adopts the method of introducing protective gas, which will discharge the air inside the pipe and fill the inside of the pipe, so that the welding part can be avoided from being oxidized during welding. However, when the pipe is long, on the one hand, the adoption of this method will lead to the problem that the shielding gas will be introduced for a long time, thereby affecting the welding efficien...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K37/00B23K31/02
CPCB23K37/00B23K31/02
Inventor 丁正祥陈红亮余庆何源陈明斌曾雪养杨秀萍
Owner CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY
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