Explosion-proof method for upright oil and gas pipeline

An explosion-proof and pipeline technology, which is applied in the direction of pipe components, pipeline heating/cooling, pipes/pipe joints/fittings, etc., can solve the problems that it is difficult to ensure the explosion-proof effect of oil and gas pipelines, and the soil cannot be fixed stably, so as to facilitate large-scale Popularization and application, good flameproof effect, and the effect of avoiding overheating of the nozzle
CN107435778AInactive Publication Date: 2017-12-05PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PETROCHINA CO LTD
Publication Date
2017-12-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a flameproof method for an upright oil and gas pipeline, which belongs to the field of pipeline sealing. The method includes: taking the area of ​​the vertical oil and gas pipeline with a predetermined length from the pipe mouth as an explosion-proof area, and performing pretreatment on the explosion-proof area to make the inner wall of the explosion-proof area smooth. Place the explosive waterproof rubber sleeve in the explosion-proof area, and fill the explosive waterproof rubber sleeve with protective gas until the explosive waterproof rubber sleeve is in close contact with the inner wall of the explosion-proof area. Add sand to the explosion-proof area to form a sand layer to cover the top of the explosive waterproof rubber sleeve; add water to the explosion-proof area to form a water layer to cover the sand layer to complete the explosion-proof treatment of the vertical oil and gas pipeline. The explosion-proof method for the vertical oil-gas pipeline provided by the present invention can isolate combustible gas in the vertical oil-gas pipeline and effectively prevent welding slag from entering the vertical oil-gas pipeline.
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Description

technical field

[0001] The invention relates to the field of pipeline sealing, in particular to a flameproof method for vertical oil and gas pipelines. Background technique

[0002] In the oil transportation system, in order to transport crude oil, natural gas, etc. to designated locations, it is necessary to adjust the length and direction of some oil and gas pipelines to make the transportation of crude oil, natural gas, etc. more convenient and fast. When adjusting oil and gas pipelines, it is often necessary to weld different oil and gas pipelines. When welding, it is necessary to carry out explosion-proof treatment on the oil and gas pipelines that have transported crude oil and natural gas, so as to avoid the residual combustible gas in the oil and gas pipelines from bringing safety hazards to the welding process, and to prevent welding slag from falling into the oil and gas pipelines, ensuring that crude oil and natural gas and other safe and high-quality transportat...

Claims

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