Safe pipeline plugging agent
A plugging agent, pipeline technology, applied in the direction of pipe elements, pipes/pipe joints/pipes, other chemical processes, etc., can solve the problems of burnt construction personnel, inability to weld, shoot, fire, etc., achieve obvious economic benefits, avoid Dust internal combustion, the effect of ensuring construction safety
Inactive Publication Date: 2010-12-29
姜蜀睿
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AI Technical Summary
Problems solved by technology
[0002] When the pipeline needs to be replaced or repaired, and when the old and new pipelines collide, the gate is replaced in the station, and the pipeline operation is changed in the process flow, the residual oil and gas in the pipeline often cannot be exhausted, and flames are formed during construction, which cannot be welded, especially for large-diameter pipelines. When the pressure is cut, the air enters the pipe, causing negative pressure combustion, and the pipe may be fired at any time, and the construction personnel may be burned, so that the welding, welding and other processes cannot be carried out, which will affect the progress of the project.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment
[0015] Plugging agent formula:
[0016] Consists of the following raw material components: 70 kg of adipic acid diol type polyester mixture as a chain extender, 11 kg of triethyleneamine as a catalyst, 2 kg of siloxane copolymer as a surfactant, diphenyl 10-20 kg of methyl methane diisocyanate, an appropriate amount of pigment, 10 kg of foaming liquid sodium dibutylnaphthalene sulfonate as a surfactant, 5 kg of resorcinol as a foam stabilizer, and 60 kg of water. In this formula, bentonite, lithopone, calcium carbonate, etc. can be used as auxiliary materials, which are added to the powder and pounded together. The amount of auxiliary materials is the existing conventional amount.
[0017] Adopt the construction method of safe pipeline sealing agent. After the pipeline is opened, the pipeline sealing agent is inserted into the pipeline. After 10 minutes, the pipeline sealing agent expands rapidly and closely contacts the inner wall of the pipe to form radial pressure and cut o...
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The invention relates to a safe pipeline plugging agent which can block up pipelines effectively and cut off residual oil gas flow, thus realizing no residual oil gas or other leakages existing in the pipelines and no flame burning so as to provide absolute safety guarantee for personnel and equipment for joint welding, and is safe, environmentally friendly and convenient for use. The plugging agent of the invention is composed of the raw materials by parts by weight (pbw) as follows: 50 pbw to 90 pbw of adipic-acid-diol type polyester compound as a chain extender, 8 pbw to 15 pbw of triethylene diamine as a catalyst, 3 pbw to 10 pbw of siloxane copolymer as a surfactant, 10 pbw to 20 pbw of diphenylmethane diisocyanate, appropriate amount of pigment, 8 pbw to 12 pbw of foaming liquid of nekal as the surfactant, 2 pbw to 8 pbw of resorcin as a foam stabilizer and 40 pbw to 80 pbw of water.
Description
1. Technical field [0001] The invention relates to a blocking agent, in particular to a safety pipeline blocking agent. 2. Background technology: [0002] When the pipeline needs to be replaced or repaired, and when the old and new pipelines collide, the gate is replaced in the station, and the pipeline operation is changed in the process flow, the residual oil and gas in the pipeline often cannot be exhausted, and flames are formed during construction, which cannot be welded, especially for large-diameter pipelines. When the pressure is cut, the air enters the pipe, causing negative pressure combustion, and the pipe may be fired at any time, and the construction personnel may be burned, so that welding, welding and other processes cannot be carried out, affecting the progress of the project. 3. Contents of the invention: [0003] In order to solve the deficiencies in the above background technology, the present invention provides a safe pipeline sealing agent, which can e...
Claims
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IPC IPC(8): C09K3/10F16L55/12
Inventor 姜蜀睿
Owner 姜蜀睿