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

Inactive Publication Date: 2017-12-05
PETROCHINA CO LTD
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Problems solved by technology

[0005] The explosion-proof method provided by the prior art is suitable for horizontal oil and gas pipelines, but when the vertical oil and gas pipelines are subjected to explosion-proof treatment, the soil cannot be stably fixed at the nozzle of the oil and gas pipeline, so it is difficult to ensure that the explosion-proof method is suitable for oil and gas pipelines. explosion-proof effect

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  • Explosion-proof method for upright oil and gas pipeline

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Embodiment 1

[0042] This embodiment provides a flameproof method for vertical oil and gas pipelines, and the specific steps are as follows:

[0043] Step 1: Take the area 60cm away from the nozzle of the vertical oil and gas pipeline 1 as the explosion-proof area 2, polish the inner wall of the explosion-proof area 2 with sandpaper, and then wipe it with cotton cloth or gauze to make the inner wall of the explosion-proof area 2 smooth ,clean.

[0044] Step 2: Place the explosive waterproof rubber sleeve 3 produced by Juneng Spacer Co., Ltd. in the explosion-proof area 2, and fill the explosive waterproof rubber sleeve 3 with nitrogen as a protective gas until the explosive waterproof rubber sleeve 3 and the explosion-proof area 2 The inner walls are in close contact to isolate the combustible gas in the vertical oil and gas pipeline 1.

[0045] Step 3: Add loam with an average particle size of 0.1mm to the explosion-proof area 2 to form a sand layer 4 to cover the top of the explosive wat...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/00F16L53/00
CPCF16L55/005F16L53/00
Inventor 陈彦军马献斌朱小丽马凤芹郭连升赵丽卫海林
Owner PETROCHINA CO LTD
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