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Winding wire for large-diameter high-pressure flexible composite pipe and using method thereof

A flexible composite pipe and large-diameter technology, which is used in the field of pipeline transportation and fiber-reinforced thermoplastic pipes, can solve problems such as difficulty in processing large-diameter, high-pressure pipes, uneven stress on multi-layer fibers, and low pressure-bearing capacity of flexible composite pipes. , to achieve the effect of facilitating processing and solving the large stress on the inner layer

Active Publication Date: 2022-07-08
YIBIN UNIV
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  • Application Information

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Problems solved by technology

[0008] Purpose of the present invention: In order to overcome the low pressure bearing capacity of existing fiber-reinforced flexible composite pipes, it is difficult to process them into large-diameter, high-pressure pipes; fundamentally solve the problem of uneven stress on multi-layer fibers of flexible composite pipes, so as to improve fiber Enhancing the pressure bearing capacity of flexible composite pipes

Method used

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  • Winding wire for large-diameter high-pressure flexible composite pipe and using method thereof
  • Winding wire for large-diameter high-pressure flexible composite pipe and using method thereof
  • Winding wire for large-diameter high-pressure flexible composite pipe and using method thereof

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Embodiment approach 1

[0048] Embodiment 1: The inner lining layer 1 has an inner diameter of 600 mm, the inner lining layer 1 adopts a polyethylene pipe with a wall thickness of 22 mm, the inner core 41 of the winding 4 adopts a solid rubber wire with a diameter of 3 mm, and the fiber bundle 43 is aramid fiber, and the inner core is made of aramid fiber. The surface of 41 is provided with aramid fibers arranged along the axial direction of the inner core 41, the volume ratio of the fiber bundle 43 to the inner core 41 is 0.7:1, the angle between the winding direction of the winding 4 and the axis of the pipeline is 55°, and the twist of the fiber bundle 43 is zero; The winding 4 is spirally wound on the inner lining layer 1 to form an 8-layer reinforcement layer 2; between the adjacent layers of the reinforcement layer 2, the winding direction of the winding 4 is opposite; the fibers between the adjacent layers of the reinforcement layer 2 The bundle 43 is wound in the opposite direction to the inne...

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Abstract

The invention relates to a large-diameter high-pressure flexible composite pipe winding and a use method thereof, belonging to the field of fiber-reinforced thermoplastic pipes. Its technical scheme: the fiber bundle is wound on the inner core of the flexible material, and then wound to form a multi-layer reinforcing layer; and by changing the angle between the winding direction of the fiber bundle and the axis of the inner core, the fiber bundle The slack degree of each layer of winding is adjusted according to the volume ratio of the inner core, the angle between the winding direction and the axis of the pipeline, the twist of the fiber bundle, etc., so that the winding of each layer is uniformly stressed, and finally the pressure bearing of the fiber-reinforced flexible composite pipeline is improved. ability. The invention solves the problem that the inner layer fibers of the existing flexible composite pipes bear large force and the outer layer fibers bear little force, and can be used for large-diameter and high-pressure flexible composite pipes.

Description

technical field [0001] The invention relates to a large-diameter high-pressure flexible composite pipe winding and a method for using the same, belonging to the field of pipeline transportation, in particular to the field of fiber-reinforced thermoplastic pipes. Background technique [0002] Reinforced Thermoplastic Pipes (RTP pipes for short) are high-pressure plastic composite pipes with good flexibility, corrosion resistance, high pressure resistance, impact resistance, wear resistance, light weight, easy connection, and coilability. , long-distance jointless quick laying and other characteristics, can well overcome the corrosion problem of steel pipes and the pressure resistance of plastic pipes, and can be used in oil and natural gas exploration, high-pressure long-distance transportation of natural gas and various transport mediums requiring higher pressure. pipeline field. [0003] RTP products are usually composed of three layers. The inner and outer layers are made...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C53/58B29C53/80
CPCB29C53/583B29C53/8008
Inventor 何虹钢陈怡圯
Owner YIBIN UNIV
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