An underwater natural gas pipeline leakage automatic sealing robot and its application method

Abstract

The invention belongs to the field of natural gas transportation, and in particular relates to an underwater natural gas pipeline leakage automatic sealing robot and its use method, which includes a support mechanism connected to the pipeline. There are two support mechanisms, one of which is the support mechanism A driving mechanism is provided on the top, and a connecting piece is fixedly connected between the two supporting mechanisms, and sliding rods are slidably connected at both ends of the connecting piece, and a limiting mechanism matching with the sliding rod is provided on the driving mechanism. The present invention can realize that when there is a pipeline leak in the device, the gas will pass through the support tube and enter the airbag to expand the airbag, and the expansion of the airbag will realize the sliding The rod moves upwards, and then the sliding rod pulls the pull rope, and the stretching will tighten the protective film so that the protective film is tightly attached to the outside of the pipe, and then the two ends of the leaking part of the pipe are blocked by the protective film, thereby realizing The air leakage of the pipeline is blocked in the support cylinder.

Description

technical field [0001] The invention belongs to the technical field of natural gas transportation, and in particular relates to an underwater natural gas pipeline leakage automatic sealing robot and a use method thereof. Background technique [0002] At present, most natural gas refers to a mixture of hydrocarbon and non-hydrocarbon gases naturally stored in the formation. Natural gas contains almost no sulfur, dust and other harmful substances. When burned, it produces less carbon dioxide than other fossil fuels, resulting in a lower greenhouse effect. , so it is a relatively clean energy. Most of the natural gas is transported by pipelines, and a few are transported by tankers. For offshore gas fields, it is more efficient to transport the collected natural gas through underwater pipelines. [0003] However, the transportation of underwater pipelines may cause damage to the pipeline due to the attachment of shellfish to the surface of the pipeline, and because the pipeline...

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Problems solved by technology

[0003] However, the transportation of underwater pipelines may cause damage to the pipeline due to the attachment of shellfish to the surface of the pipeline, and because the pipeline is located below the sea surface, it is necessary for personnel to carry sealing tools to sneak into the seabed, and then seal the damaged part. Personnel below the sea surface need to bear the pressure of seawater and overcome the resistance of seawater, making it difficult for personnel to operate, and the environment below the sea surface is relatively dark, making it difficult for personnel to operate conveniently. Various factors make it difficult for personnel to quickly block it. The leakage of natural gas will cause the gas inside the pipeline to overflow from the damaged part, which will not only cause direct economic losses, but also change the air composition of the surrounding environment and cause environmental pollution. When the damaged part of the pipeline is small, It is difficult for personnel to find out in time. If the pipeline cannot be blocked, the long-term leakage will continue to increase the economic loss. The stress of the pipeline will gradually expand for a long time, which will not only speed up the leakage of natural gas and increase the economic loss, but also increase the difficulty of subsequent personnel to block it

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