'cabin inside cabin' type working space for welding subwater pipeline in dry mode and under normal pressure

An underwater pipeline and work cabin technology, applied in the field of work cabins, can solve problems such as difficulty in establishing an atmospheric welding environment, and achieve the effects of excellent and reliable welding quality and reduced sealing difficulty

Inactive Publication Date: 2004-10-27
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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Problems solved by technology

Obviously, the outstanding problem of atmospheric pressure welding is: the deeper the water area, the more difficult it is to establish the atmospheric pressure welding environment

Method used

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  • 'cabin inside cabin' type working space for welding subwater pipeline in dry mode and under normal pressure
  • 'cabin inside cabin' type working space for welding subwater pipeline in dry mode and under normal pressure
  • 'cabin inside cabin' type working space for welding subwater pipeline in dry mode and under normal pressure

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Embodiment Construction

[0017] Depend on Figure 1A , Figure 1B It is shown that a "cabin in a cabin" type underwater pipeline normal pressure dry welding working cabin is mainly composed of a main adjustment frame 1, an auxiliary adjustment frame 2, a hyperbaric cabin 3 and a normal pressure cabin 4, wherein the main adjustment frame 1 It is connected with the pipeline 5 to be repaired, and the auxiliary adjustment frame 2 supports the pipeline 5 to be repaired, and is connected with the end 35 of the hyperbaric chamber 3, and is sealed with the pipeline 5 to be repaired by a hydraulic sealing ram 31, and fixed in the hyperbaric chamber The articulated auxiliary manipulator 32 on the bottom guide rail 34 adjusts and supports the replacement pipe 51; the mobile atmospheric cabin 4 is set on the pipeline 5 to be repaired through the annular special-shaped sealing device 43 on the cabin body of the atmospheric pressure cabin 4, and the annular special-shaped seal Device 43 realizes the sealing with th...

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Abstract

A 'cabin-in-cabin' working cabin for ordinary-pressure dry welding of underwater pipeline is composed of primary regulating frame, secondary regulating frame, high-pressure cabin, and ordinary-pressure cabin positioned in said high-pressure cabin. Said orindary-pressure cabin is divided into left and right cabins and only welding is conducted in the ordinary-pressure cabin. Its advantage is high welding quality.

Description

technical field [0001] The invention relates to a work cabin for welding in an underwater normal pressure environment. The work cabin is placed in a high pressure cabin and can realize welding in the normal pressure environment. Background technique [0002] At present, the underwater pipeline repair methods in the world mainly include underwater mechanical coupling repair and welding repair. Welding repair is widely used because of its advantages of good joint quality and light weight. In terms of its working environment, welding repair can be divided into two categories: dry welding repair and wet welding repair. The latter is directly operated by welders in water, so there are hidden dangers that may affect welding quality such as hydrogen-induced cracks in the weld. Many countries, especially Europe, tend to adopt more dry welding repair solutions. Dry welding is an underwater pipeline repair method in which the dry tank is straddled on the pipe to be welded, and the wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63C11/34
Inventor 蒋力培焦向东周灿丰陈家庆
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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