Self off-connecting auto desealing pipeline packer

Abstract

The invention comprises a central tube with a throughhole on the tube wall, a gasbag disposed outside the central tube wall, a first guard board firm-jointed at left end of the central tube and in the centre of the first guard board disposed a step hole, a first clamping plate firm-jointed at left end of the said first guard board and a step hole disposed in its centre, a first piston held in the step holes of the first guard board and the first clamping plate, at right end of the central tube disposed a second guard board, a second clamping plate and a second piston, a first joint firm-jointed at right end of the said second clamping plate, a second joint disposed at right end of the first joint and a wedge key held in the sloping hole of the said second joint.

Description

technical field [0001] The invention relates to a pipeline occluder, in particular to a pipeline occluder capable of self-decoupling and self-unsealing. Background technique [0002] Oil and gas pipelines are the main production facilities for the development and production of onshore and offshore oil and gas fields, as well as oil and gas transportation. Due to various reasons, such as the operation status of the pipeline beyond the design range, ship anchor operation, trawling fishing collision, seabed scour, impact of falling objects, medium corrosion, and improper construction operations, oil and gas pipeline damage accidents have increased year by year, seriously affecting oil and gas production. [0003] At present, the existing technology for sealing pipelines with a sealing machine can only perform sealing operations on the pipeline at the opening of the pipeline, and it is not yet possible to separate the sealing device from the feeding mechanism, so it cannot meet...

AI Technical Summary

Problems solved by technology

Due to various reasons, such as the operation status of the pipeline beyond the design range, ship anchor operation, trawling fishing collision, seabed scour, impact of falling objects, medium corrosion, and improper construction operations, oil and gas pipeline damage accidents have increased year by year, seriously affecting oil and gas production

[0003] At present, the existing technology for sealing pipelines with a sealing machine can only perform sealing operations on the pipeline at the opening of the pipeline, and it is not yet possible to separate the sealing device from the feeding mechanism, so it cannot meet the requirements of pipeline sealing. During the maintenance operation, the plugging device is disconnected from the feeding mechanism, and the pipeline maintenance operation requires a certain distance away from the opening of the pipeline to block the pipeline. It cannot be used for multiple purposes, which increases the complexity and cost of pipeline plugging and maintenance operations. Therefore, this problem needs to be solved urgently.

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