Submarine pipeline welding method

Abstract

The invention discloses a subsea pipeline welding method. The subsea pipeline welding method uses a device which comprises a housing, a travelling mechanism, a pipeline attachment polishing mechanism,a weld joint cleaning mechanism, a microwave drying mechanism, a welding mechanism, a beating mechanism, a post-welding polishing mechanism and a spraying mechanism, wherein all the above mechanismsare arranged in a certain circumferential direction of the housing in sequence. The subsea pipeline welding method includes operation of pipeline attachment clearing, weld joint cleaning, microwave drying, welding, beating for stress removal, post-welding polishing, spraying and the like. The subsea pipeline welding method is a welding method specific to a special environment where a subsea pipeline is located, and therefore compared with an existing manual subsea pipeline welding operation method, the subsea pipeline welding method can achieve continuous operation of subsea pipeline welding,and improves welding efficiency and welding quality of the subsea pipeline.

Description

technical field [0001] The invention belongs to the field of welding technology, and in particular relates to a seabed pipeline welding method. Background technique [0002] With the development of oceans and lakes, there is an increasing demand for underwater machinery and equipment, such as underwater metal pipelines (hereinafter referred to as underwater pipelines). The installation or repair of underwater pipelines is inseparable from the welding process. At present, the welding work of underwater pipelines in engineering is almost entirely dependent on manual operation. The welding process is cumbersome, time-consuming and labor-intensive, and it is very difficult under continuous operation conditions. In addition, the visibility of underwater pipelines is poor during welding, and the joints after welding Strength and tightness are difficult to guarantee, often contain high hydrogen and are easy to oxidize. It can be seen that the current underwater welding operation n...

AI Technical Summary

Problems solved by technology

At present, the welding work of underwater pipelines in engineering is almost entirely dependent on manual operation. The welding process is cumbersome, time-consuming and labor-intensive, and it is very difficult under continuous operation conditions. In addition, the visibility of underwater pipelines is poor during welding, and the joints after welding Strength and sealing are difficult to guarantee, often contain high hydrogen and are easy to oxidize

It can be seen that the current underwater welding operation not only has a high risk factor, but also the quality of the weld is difficult to control

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