A quick plugging device for oil and gas pipeline

Abstract

The invention discloses a rapid plugging device for an oil and gas pipeline. The device is mainly composed of an upper shell and a lower shell, casting runners are arranged in the wall surface of theupper shell and the wall surface of the lower shell, and a welding groove and a temperature control groove are formed in the inner wall. According to the rapid plugging device for the oil and gas pipeline, when the device works, an annular cavity formed by the temperature control groove and the wall surface of a to-be-plugged pipeline is filled with a flame retardant through a liquid injection valve, then an aluminothermic reaction is carried out in a reaction funnel, generated metal liquid enters the casting runners from inlets of the casting runners under the action of gravity and finally fills the casting runners, and excess metal liquid flows out of overflow openings; after the metal liquid is cooled and solidified, a liquid discharging valve is opened to discharge the flame retardant;and finally, the liquid injection valve and the liquid discharging valve are closed, so that rapid plugging of the pipeline is completed. The rapid plugging device for the oil and gas pipeline has the advantages of being capable of realizing rapid plugging of the pipeline without stopping conveying of oil and gas, being firm in sealing, simple in structure, reliable in working and convenient andfast, being wide in application prospect and the like.

Description

Technical field: [0001] The invention relates to a quick sealing device for oil and gas pipelines, in particular to a device for quick sealing of leaking pipelines based on thermite reaction. Background technique: [0002] The oil and gas industry is the lifeline industry that is related to the survival and development of the country, and the pipeline transportation of oil and gas is the most important transportation mode in the petrochemical industry. Therefore, ensuring the safe and efficient operation of the oil and gas pipeline system is crucial to ensuring the safety and stability of the petrochemical industry and the long-term future of the country. development is of great significance. Natural disasters such as corrosion, landslides and debris flows, as well as third-party damage, will cause pipeline leakage accidents. In addition to causing great economic losses and environmental pollution, the leakage of oil and gas pipelines will also cause fires and explosions, s...

AI Technical Summary

Problems solved by technology

Fixture maintenance is mainly suitable for temporary plugging of pipelines with low pressure and small leakage channels; its advantages are simple operation and low maintenance cost, but it has high requirements on the surface finish and ovality of pipelines, and is limited by sealing materials. Suitable for higher pressure plugging with risk of re-leakage

[0008] The common problem of the existing sealing technology is that the sealing has high requirements for the operator and the sealing time is long, which is not conducive to the rapid control of leakage accidents

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