Composite pipe and manufacturing and mounting method thereof

A technology of composite pipes and pipes, which is applied in the field of pipes, can solve problems such as installation difficulties, and achieve the effects of increased ring rigidity, easy coiling, and fewer joints

Active Publication Date: 2017-11-14
GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent combines the advantages of rigid pipes and flexible pipes. Using the combined effect of rigid and flexible pipes, the ring stiffness is high, but this kind of pipe contains rigid pipes, which is also difficult to install.

Method used

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  • Composite pipe and manufacturing and mounting method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of composite pipe, this composite pipe comprises reinforcing material layer, inner liner and outer protection layer, and pipe inner diameter is 150mm, the thickness of inner liner is 11.5mm, the thickness of reinforcement material layer is 6.4mm, and the thickness of outer protection layer is 7.5mm. The reinforcement layer contains fiber-reinforced prepreg, inside the reinforcement layer there is an inner liner made of polyethylene, and outside the reinforcement layer there is an outer protective layer made of nylon. The fiber reinforced prepreg contains 4 parts by weight of epoxy resin and 6 parts by weight of carbon fiber.

[0036] The method for manufacturing the above-mentioned composite pipe includes the following steps: use a winding machine to hoop-wind the fiber fabric thermoplastic prepreg on the inner liner polyethylene, and wrap the outer protective layer nylon on the fiber fabric thermoplastic prepreg tape.

[0037] Coil the composite pipe and lay it...

Embodiment 2

[0039] A kind of composite pipe, this composite pipe comprises reinforcing material layer, inner liner and outer protection layer, and pipe internal diameter is 100mm, the thickness of inner liner is 7.5mm, the thickness of reinforcing material layer is 3.2mm, and the thickness of outer protection layer is 5.5mm. The reinforcement layer contains fiber-reinforced prepreg, inside the reinforcement layer there is an inner liner made of polyether ether ketone, and outside the reinforcement layer there is an outer protective layer made of polyvinylidene fluoride, fiber-reinforced prepreg The material contains 3 parts by weight of phenolic resin and 7 parts by weight of glass fiber.

[0040] The method for manufacturing above-mentioned composite pipe comprises the steps:

[0041] A winding machine is used to hoop-wind the fiber fabric thermoplastic prepreg on the inner lining layer polyether ether ketone, and wrap the outer protective layer polyvinylidene fluoride on the fiber fabr...

Embodiment 3

[0044] A kind of composite pipe, this composite pipe comprises reinforcing material layer, inner liner and outer protective layer, composite pipe internal diameter is 150mm, the thickness of inner liner is 0.5mm, the thickness of reinforcing material layer is 6.4mm, the thickness of outer protective layer 0.5mm. The reinforcement layer contains fiber-reinforced prepreg, inside the reinforcement layer there is an inner liner made of nylon, and outside the reinforcement layer there is an outer protective layer made of polyethylene. The fiber-reinforced prepreg contains 5 parts by weight of unsaturated polyester and 5 parts by weight of aramid fiber.

[0045] The method for manufacturing above-mentioned composite pipe comprises the steps:

[0046] Using a winding machine, the fiber fabric thermoplastic prepreg is hoop-winded on the inner liner nylon, and the outer protective layer polyethylene is wrapped on the fiber fabric thermoplastic prepreg tape.

[0047] Coil the composit...

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Abstract

A composite pipe comprises a reinforced material layer, the thickness of the reinforced material layer ranges from 0.15 mm to 20 mm, the inner diameter of a pipeline ranges from 20 mm to 250 mm, the reinforced material layer comprises fiber-reinforced prepreg, and the fiber-reinforced prepreg comprises, by weight part, 3 parts to 5 parts of resin and 5 parts to 7 parts of a reinforced material; except for the reinforced material, the composite pipe further comprises a lining layer and an outer protection layer, before mounting, the fiber-reinforced prepreg in the composite pipe is not cured, during mounting, running water higher than or equal to 20 DEG C is led into the composite pipe, or / and an infrared heater with the wavelength ranging from 0.75 nm to 106 nm is used, or / and a microwave generator is used for sending out microwaves ranging from 900 MHz to 2450 MHz, and therefore the fiber-reinforced prepreg is cured. The composite pipe can be widely applied to the petroleum and gas pipeline industry, ring rigidity is good, and due to the fact that coiling is easily achieved, mounting is quite convenient.

Description

technical field [0001] The invention relates to the technical field of pipes, in particular to a composite pipe and its manufacturing and installation method. Background technique [0002] The flexible composite pipe has the advantages of fewer joints, convenient laying, fast and reliable connection, saving construction manpower and installation period, etc., and has been widely used in the oil and gas pipeline industry, especially the demanding submarine oil and gas pipeline. Although the flexible composite pipe is easy to install, it is generally desired that the pipe has a certain rigidity during use, which can withstand internal and external high pressure, and will not cause failure behaviors such as crushing and buckling. [0003] The existing technology is either a rigid pipe before laying, which is supplied in the form of a straight pipe, each length is between 6-12m, and there are many installation joints, and the reliability is low; or it is a flexible pipe before i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/14B32B1/08C08L67/06C08L77/10C08L67/00C08L63/00C08L23/06C08L61/06C08K7/06C08K7/14C08K7/04
CPCB32B1/08C08K7/04C08K7/06C08K7/14C08L23/06C08L63/00C08L67/00C08L67/06C08L77/10C08L2203/18C08L2205/03C08L2205/16F16L9/14C08L61/06
Inventor 黄险波陈大华李晓拓范欣愉孙雅杰徐光磊熊鑫蒲颖蔡华轮
Owner GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV
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