Submarine pipeline dry welding work cabin with sealed cabin

Abstract

The invention relates to a submarine pipeline dry welding work cabin with a sealed cabin, which mainly comprises an upper cabin body (1), a lower cabin body (2), a sealed cabin body (3), a cabin body function hole (31), an outer cylinder (9), a left guide rod (5), a right guide rod (14) and a base (10), wherein the upper cabin body (1) and the lower cabin body (2) are respectively a semicylindrical shell; the sealed cabin body (3) is isolated at the top part of the upper cabin body (1) through a push and pull type movable plate (17) and a fixed plate (18); the guide rods (5, 6) and the outer cylinder (9) are connected with the upper cabin body and the lower cabin body, and guide rods (19, 20) and cylinders (21, 22) related to the movable plate (17) and the fixed plate (18) are installed in the sealed cabin body (3). The sealed cabin body (3) in the invention can conveniently enable welding equipment and welding control equipment to stay in a non-immersion state, thus the quality and the efficiency of welding are improved, and the cost of equipment is reduced. The invention not only can realize dry hyperbaric welding of submarine pipelines under the action of a hyperbaric gas, but also can release the hyperbaric gas in the work cabin into ordinary pressure through a check valve. Thus, the work cabin not only can complete underwater hyperbaric welding but also can complete underwater atmospheric welding. The invention has simple structure and low cost and is easy to popularize.

Description

technical field [0001] The invention relates to a welding working cabin, in particular to an underwater pipeline dry welding working cabin with a sealed cabin capable of realizing underwater unmanned participation for underwater pipelines. Background technique [0002] At present, the underwater welding of important structures is generally divided into two methods: dry welding and wet welding. The so-called dry welding is to build a sealed cabin at the part to be welded, and drain the water inside with gas, so that both the welder and the arc are in a "dry" environment. The quality of the dry weld is high, but the current commonly used structure is more complicated, the cost is higher, and generally requires the participation of divers or welders, the preparation work is more cumbersome, and the deep water welding is limited. The so-called wet welding is to use the welding rod to weld directly in the water, and the arc burns in the underwater environment. Although the wet ...

AI Technical Summary

Problems solved by technology

Although the wet welding equipment is simpler and easier to operate than the dry welding, the arc is unstable, the weld shape is not good, and the performance of the welded joint is poor. Therefore, the wet welding cannot be used for welding important underwater structures.

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