CN2630606Y - Carbon-plastic alloy fire-retardant temp. resisting oil-gas pipe material - Google Patents

Abstract

A carbon-plastic alloy flame-retardant and temperature-resistant oil and gas pipe, the pipe wall of which is composed of an inner lining pipe, a middle reinforcing layer and an outer protective layer. The inner liner is composed of carbon fiber, filament chopped material, graphite, plastic mixed granulation and extruded pipe body. The reinforcing layer is made of winding filament fibers, and the fibers are bonded by adhesives. The protective layer is composed of viscose cotton winding, resin bonding and calendering. It is mainly used to transport oil, gas, water and other chemical agents, and can replace the existing steel pipes. Its advantages are: the inner wall is smooth, the flow resistance is small, and the oil delivery capacity is 25%-30% higher than that of steel pipes. Light weight, 30% of steel pipe weight. No micro-seepage, no scaling, wear resistance 6-8 times that of steel pipe, fluid loss 30% lower than steel pipe. Flame retardant, thermal insulation, antistatic, no delamination. The adaptable working temperature is -40°C-105°C. Internal and external anti-corrosion, good adaptability to non-oxidizing acid, sulfuric acid, dilute nitric acid, alkali and salt solution and various corrosive media at high temperature. long lasting.

Description

A carbon-plastic alloy flame-retardant and temperature-resistant oil and gas pipe

technical field

The utility model relates to a pipe material, in particular to a flame-retardant and high-temperature-resistant pipe material. It is mainly used to transport oil, gas, water and other chemical agents, and can replace the existing steel pipes.

Background technique

At present, the pipelines used to transport the above-mentioned liquid and gas medium all use steel pipes, which have the following disadvantages:

The inner wall is rough, the flow resistance is large, and the conduction efficiency is low; the specific gravity is large, and the installation is time-consuming and laborious; the pipe body has micro-osmosis, easy scaling, and low wear resistance; low thermal insulation performance, easy delamination, and large heat loss; ability to adapt to corrosive media Difference. The service life is short, 3-6 years.

new content

The purpose of this utility model is to provide a flame-retardant and high-temperature-resistant pipe to overcome the above-mentioned shortcomings of steel pipes.

The technical scheme adopted by the utility model is as follows: a carbon-plastic alloy flame-retardant and temperature-resistant oil-gas pipe, the pipe wall of which includes a three-layer composite structure, which are respectively the inner lining pipe, the middle reinforcing layer, and the outer protective layer .

The inner liner pipe is composed of a pipe body formed by mixing, granulating and extruding carbon fiber, filament chopped material, graphite and plastic.

The reinforcing layer is formed by winding filament fibers, and the fibers are bonded by adhesives.

The protective layer is composed of viscose cotton winding, resin bonding and calendering.

The utility model has the advantages that the inner wall is smooth, the flow resistance is small, the roughness is only 1/100 of the steel pipe, the friction coefficient is 60% of the steel pipe, and the oil delivery capacity is 25%-30% higher than that of the steel pipe.

Light weight, 30% of steel pipe weight, moderate flexibility, can save 60% of equipment and labor costs. No micro-seepage, no scaling, wear resistance 6-8 times that of steel pipe, fluid loss 30% lower than steel pipe. Flame retardant, heat preservation, antistatic, no delamination, low heat dissipation coefficient is only 1/200 of steel pipe. The adaptable working temperature is -40℃-105℃.

Internal and external anti-corrosion, good adaptability to 275 kinds of corrosive media such as non-oxidizing acid, sulfuric acid, dilute nitric acid, alkali and salt solution, and organic solvent at high temperature, especially suitable for use in harsh environments. Long service life: 20-30 years under design temperature and pressure.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of the utility model.

Detailed ways

Referring to Fig. 1, the utility model is composed of a lining pipe 1 from the inside to the outside, a reinforcing layer 2 and a protective layer 3.

The inner liner 1 is manufactured by mixing, granulating and extruding carbon fiber, filament chopped material, graphite and plastic.

The reinforcing layer 2 is formed by winding filament fibers, and the fibers are bonded by adhesives.

The protective layer 3 is formed by winding viscose cotton, bonding with resin and calendering.

The liner pipe 1 of the utility model has the properties of no micro-seepage, high wear resistance, good toughness and low temperature resistance.

The reinforcing layer 2 of the utility model has high strength, and the protective layer has a smooth surface and good protective performance.

Claims (4)

1, the fire-retardant heatproof oil-gas pipe material of a kind of carbon-plastic alloy, it is characterized in that: its tube wall comprises three-layer composite structure, is respectively the internal lining pipe of internal layer, the enhancement layer in middle level, outer field protective coating.

2, the fire-retardant heatproof oil-gas pipe material of carbon-plastic alloy according to claim 1 is characterized in that: described internal lining pipe is made of the body that adopts carbon fiber, long filament weak point to cut material, graphite, the extruding and moulding of plastics mixing granulation.

3, the fire-retardant heatproof oil-gas pipe material of carbon-plastic alloy according to claim 1 is characterized in that: described enhancement layer is that long fiber is wound in, and adhesive bond is arranged between the fiber.

4, the fire-retardant heatproof oil-gas pipe material of carbon-plastic alloy according to claim 1 is characterized in that: described protective coating adds resin-bonded by sticking cotton winding and press polish constitutes.

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