Underwater dry-type repairing work cabin

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 topand 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-mentioned foreign metho...

AI Technical Summary

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.

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