Underwater dry-type repairing work cabin

A maintenance work, dry technology, applied in underwater operation equipment, pipeline laying and maintenance, ships, etc., can solve problems such as complex sea conditions, hollowing out, economic and construction effects are not very ideal

Inactive Publication Date: 2006-12-13
中石化石油工程技术服务有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the underwater pipelines and cables in my country's shallow sea oilfields are usually laid by the buried method, and the buried depth is more than 1m, and the sea conditions are complex, and the phenomenon of sea current washing, digging erosion, and hollowing out is serious
Using the above-mentioned foreign methods to carry out pipeline and cable maintenance operations is not very satisfactory in terms of economy and construction effect.

Method used

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  • Underwater dry-type repairing work cabin

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Embodiment Construction

[0011] Now combined with the manual figure 1 The present invention is described further:

[0012] 1. The sinking operation of the maintenance cabin:

[0013] After the submersible 9 that the underwater dry maintenance work cabin is housed is driven to the predetermined working position and sits on the bottom and positioned, the sinking operation starts. First open the positioning device 10 to make the maintenance work cabin in a free state, then turn on the vertical jetting pump in the submersible 9, and the high-pressure water flows through the vertical jetting main pipe 2 to the vertical jetting device 5 for vertical jetting, and the maintenance cabin is 6 times After inserting to a certain depth, turn on the horizontal jetting pump and the suction pump in the submersible 9, and the high-pressure water flows through the horizontal jetting main pipe 3 to the horizontal jetting device 4, so that the silt at the bottom of the working cabin forms a mud swirl, and passes through...

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Abstract

The invention relates to an improvement on the underwater tube and cable maintainer, especially providing an underwater dry maintain cabin. Wherein, it is in thin-wall cylinder structure, without top and bottom, which is connected to the diver via lifting cylinder; said cabin is a sealing pressure cabin, whose pressure can be adjusted according to the water depth. And it is formed by maintain cabin, lifting cylinder, ejection system, pump system, and sealing device. The invention is characterized in that: it can be mounted on the diver with self navigation ability, to process the maintenance without working ship; and said cabin can dive into sea bed, via the lifting cylinder, to maintain the embedded cable and tube.

Description

technical field [0001] The invention belongs to an underwater pipeline and cable maintenance device. Background technique [0002] At present, most foreign offshore oil fields are closed sea areas or large lakes, and the subsea foundations are relatively solid. Generally, the pipelines are prefabricated by gravity, and the pipelines are directly put into the seabed without pre-buried. Therefore, foreign countries usually use submarine submersible vehicles to detect leaks in the pipeline through radar positioning systems and magnetic flux leakage. Perform pipeline repair work. Above-mentioned method all needs the mutual cooperation of ship on water and submersible. At present, the underwater pipelines and cables in my country's shallow sea oilfields are usually laid by burying, with a burial depth of more than 1m, and the sea conditions are complex, and the phenomenon of sea current washing, digging erosion, and hollowing out is serious. Adopt above-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L1/26B63C11/52
Inventor 孙东昌邬可谊韩益民田海庆刘忠彦
Owner 中石化石油工程技术服务有限公司
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