Leakage Plugging and Emergency Rescue Method for Petrochemical Special Pipeline

Abstract

The invention relates to a pipeline leaking stoppage recovery method, in particular to a special pipeline leaking stoppage recovery method for the petrochemical industry. The method comprises the following steps: using a disposable leak stopper to plug up a pipeline leaking point, wherein the disposable leak stopper is composed of an oil-proof, acid-proof and high-pressure resistant wedge-shaped sealing silicone ring, and a stainless steel wedge-shaped strapping ring with an opposite shape; cleaning oil stains and sundries on the pipeline around the disposable leak stopper, grinding the pipeline with a brush so as to show a matte surface on the surface of the pipeline, and then tightening the disposable leak stopper and the surrounding pipeline with a high-strength compression plugging adhesive tape; fixing a reinforced fixing socket, which is internally coated with a special high-strength compression plugging adhesive, outside the high-strength compression plugging adhesive tape to form a permanent plugging structure. The special pipeline leaking stoppage recovery method for the petrochemical industry can be implemented under pressure without production halt, has no influence on production, needs no evacuation and nitrogen replacement, needs no hot work, prevents fire and security risk, and is suitable for compression cold treatment plugging and physical plugging technologies of the petrochemical industry.

Description

technical field [0001] The invention relates to a leak-stopping method for a pipeline, in particular to a leak-stopping and rescue method for a special-purpose pipeline in petrochemical industry. Background technique [0002] At present, after the pipeline in the petrochemical field is perforated, the pipeline plugging method is: after stopping production, venting, and nitrogen replacement, the pipeline of the perforated section is cut off and a new pipeline is welded. The existing problems are: the production line using this perforated pipeline is shut down, which has a huge impact on production and operation; the tanker is used to carry the venting liquid of the perforated pipeline and carry out nitrogen replacement; hot work is required, cutting the pierced pipe section and welding the new pipe section, which has a large existence The risk of fire and explosion; the hot work space is narrow, the welding quality is not good, and the overall compressive strength is reduced;...

AI Technical Summary

Problems solved by technology

The existing problems are: the production line using this perforated pipeline is shut down, which has a huge impact on production and operation; the tanker is used to carry the venting liquid of the perforated pipeline and carry out nitrogen replacement; hot work is required, cutting the piercing pipe section and welding the new pipe section, which has a large existence The risk of fire and explosion; the hot work space is narrow, the welding quality is not good, and the overall compressive strength is reduced; the perforation is mostly the most corrosive pipe section, and the iron pipeline after replacement is still easy to be corroded and perforated again; for FRP The entire pipeline needs to be replaced, which wastes a lot of manpower and material resources; there are many cross operations, and the construction quality cannot be guaranteed

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