CN216407978U

CN216407978U - Continuous fiber reinforced thermoplastic large-caliber composite water supply and drainage pressure pipeline

Info

Publication number: CN216407978U
Application number: CN202122304235.8U
Authority: CN
Inventors: 陈聪; 杨维国; 庞世彬
Original assignee: Sichuan Huike Hechuang Machinery Technology Co ltd
Current assignee: Sichuan Huike Hechuang Machinery Technology Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-04-29
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses a continuous fiber reinforced thermoplastic large-caliber composite water supply and drainage pressure pipeline, which specifically comprises the following components: the plastic inner pipe layer, the reinforced core layer and the structure body outer layer are sequentially arranged from inside to outside; the plastic inner pipe layer is formed by fusing and integrating three layers of plastic belts, the later layer of plastic belt covers one third of the welding line of the former layer of plastic belt, and the rest is done in the same way to form the inner pipe; the reinforced core layer is formed by spirally winding and fusing two continuous fiber belts at a certain angle on the plastic inner pipe layer; and then the surface layer of the plastic structure body is wound and laid on the outer layer, so that the three-layer integrated high-rigidity, tensile and compressive composite pipe body is formed. The utility model has reasonable structural design, convenient and quick manufacture, high practicability and is suitable for popularization and use; the pipe material has high rigidity and high flexibility, can bear external pressure load, and is a high-rigidity, tensile and compressive composite pipe.

Description

Continuous fiber reinforced thermoplastic large-caliber composite water supply and drainage pressure pipeline

Technical Field

The utility model belongs to the field of plastic pipeline manufacturing, and particularly relates to a continuous fiber reinforced thermoplastic large-caliber composite water supply and drainage pressure pipeline.

Background

As a novel composite pipeline, the Continuous Fiber Reinforced (CFRT) plastic pipe has a series of unique advantages of light weight, high strength, low cost, corrosion resistance, environmental protection and the like, has huge application prospects in the fields of municipal administration, water conservancy, coal, chemistry, oil gas and the like, and is widely concerned by the pipeline industry, so that the continuous glass fiber reinforced polyethylene pipe composite material and the process research thereof are very rapidly developed in recent years.

Pipeline enterprises at home and abroad deeply research the continuous fiber reinforced pipe composite material and the process thereof and obtain some achievements, for example, the JEC American innovation prize is obtained in 2012 for the continuous fiber reinforced thermoplastic reinforced composite pipe successfully developed by the Netherlands Airbone company. The U.S. enterprise Composite Fluid Transfer LLC developed a successful continuous fiber reinforced polyethylene pipe awarded 2013 JEC U.S. innovation. Domestic enterprises such as chenguang, weixing, henning and the like are also actively developing fiber reinforced composite pipes and the like. However, most of the products are concentrated in the market fields of small-diameter (below 300 mm) pipelines or low-pressure drainage pipelines, and the like, but the development field of large-diameter pipelines has the defects of high product cost, low production efficiency, low market competitiveness and the like, and cannot be popularized and applied in the market of the large-diameter pipelines on a large scale, and the fiber-reinforced large-diameter thermoplastic pipelines are in the development stage at home and abroad.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a plastic product with simple structure, convenient manufacture and high mechanical property, and provides a continuous fiber reinforced thermoplastic large-caliber composite water supply and drainage pressure pipeline (CFRTP).

The utility model relates to a continuous fiber reinforced thermoplastic large-caliber composite water supply and drainage pressure pipeline which sequentially comprises a plastic inner pipe layer, a reinforced core layer and a structural body outer layer from inside to outside.

The plastic inner pipe layer is formed by fusing and integrating three layers of plastic belts, the second layer of plastic belt covers the first layer of plastic belt and covers one third of the welding seam of the first layer of plastic belt, the third layer of plastic belt covers one third of the welding seam of the second layer of plastic belt, and the like, so that the inner pipe is formed.

The reinforced core layer is formed by spirally winding and fusing two continuous fiber tapes on the inner plastic pipe layer in a staggered way, wherein the continuous fiber tapes A form an included angle alpha with the axis of the inner pipe₁Winding, the continuous fibre band B forming an angle alpha with the axis of the inner tube₂And (4) winding.

The caliber of the pipeline is 800 mm-2000 mm.

Further, the angle α₁The value is 50-70 degrees; included angle alpha₂The value is 130-110 degrees.

Further, the plastic strip material is PP, PE, PA or PERT.

Further, the continuous fiber tape of the reinforcing core layer is a thermoplastic continuous fiber prepreg tape.

Furthermore, the outer layer of the structural body is formed by continuously winding and welding structural bodies with different shapes, and the structural bodies comprise rectangles, trapezoids, triangles, U-shaped structures and circles.

The beneficial technical effects of the utility model are as follows:

1. the utility model has reasonable structural design, convenient and quick manufacture, high practicability and is suitable for popularization and use;

2. the pipe material has high rigidity and high flexibility, can bear external pressure load, and is a high-rigidity, tensile and compressive composite pipe.

Drawings

FIG. 1 is a cross-sectional view of the pipe of the present invention.

FIG. 2 is a schematic view of the fusion of the plastic inner tube layer of the present invention.

Fig. 3 is a schematic winding of a continuous fiber ribbon of the reinforced core of the present invention.

Detailed Description

The utility model is described in further detail below with reference to the figures and the detailed description.

The continuous fiber reinforced thermoplastic large-caliber composite water supply and drainage pressure pipeline is shown in figure 1 and sequentially comprises a plastic inner pipe layer 1, a reinforced core layer 2 and a structural body outer layer 3 from inside to outside. The caliber of the pipeline is 800 mm-3000 mm.

As shown in fig. 2, the plastic inner pipe layer 1 is formed by fusing and integrating three layers of plastic tapes, the second layer of plastic tape 12 is covered on the first layer of plastic tape 11 and is covered at one third of the welding seam of the first layer of plastic tape 11, the third layer of plastic tape 13 is covered at one third of the welding seam of the second layer of plastic tape 12, and the like, so as to form the inner pipe.

As shown in figure 3, the reinforcing core layer 2 is formed by spirally and alternately winding and fusing two continuous fiber tapes on the plastic inner tube layer 1, wherein the continuous fiber tapes A21 form an included angle alpha with the axis of the inner tube₁Wound, continuous fiber band B22 at an angle alpha to the axis of the inner tube₂And (4) winding.

Wherein the included angle alpha₁The value is 50-70 degrees; included angle alpha₂The value is 130-110 degrees.

Further, the plastic strip material is PP, PE, PA or PERT. The continuous fiber tape of the reinforcing core layer 2 is a thermoplastic continuous fiber prepreg tape. The structural body outer layer 3 is formed by continuously winding and welding structural bodies with different shapes, and the structural bodies comprise rectangles, trapezoids, triangles, U-shaped structures and circles.

The utility model is a three-layer high-rigidity, tensile and compressive composite pipe body which is composed of a plastic inner pipe layer 1, a reinforced core layer 2 and a structural body outer layer 3. The reinforced core layer 2 is used for independently bearing or jointly bearing the comprehensive stress of the axial tension and the circumferential pressure of the composite pipe with the inner-layer plastic pipe and the outer-layer plastic pipe.

Hoop load (stress): the hoop stress formed by the internal pressure is borne by the continuous fiber belt layer which is spirally and crossly wound, and the safety factor 3 is designed.

Axial load (stress): axial stress due to uneven sinking or the like during manufacturing and transportation and after burying is borne by the glass fiber prepreg tape layers which are axially hot-melt laid.

External pressure loading: the outer layer adopts a structural diagram form, and the pipe has high rigidity and high flexibility and can bear external pressure load (such as buried laying).

The experiment shows that the high pressure of the pipeline system is 0.4MPa to 1.6MPa, and the requirement of the large diameter of 800mm to 3000mm on the comprehensive mechanics of axial tension and annular pressure is met.

Claims

1. A continuous fiber reinforced thermoplastic large-caliber composite water supply and drainage pressure pipeline is characterized by comprising a plastic inner pipe layer (1), a reinforced core layer (2) and a structural body outer layer (3) from inside to outside in sequence;

the plastic inner pipe layer (1) is formed by fusing and integrating three layers of plastic belts, the second layer of plastic belt (12) covers the first layer of plastic belt (11) and covers one third of the welding seam of the first layer of plastic belt (11), the third layer of plastic belt (13) covers one third of the welding seam of the second layer of plastic belt (12), and the like, so that the inner pipe is formed;

the reinforced core layer (2) is formed by spirally winding and fusing two continuous fiber belts on the plastic inner pipe layer (1), wherein an included angle alpha is formed between the continuous fiber belt A (21) and the axis of the inner pipe₁Winding, the continuous fibre band B (22) forming an angle alpha with the axis of the inner tube₂And (4) winding.

2. The continuous fiber reinforced thermoplastic large-caliber composite water supply and drainage pressure pipeline as claimed in claim 1, wherein the caliber of the pipeline is 800 mm-2000 mm.

3. The continuous fiber reinforced thermoplastic large caliber composite water supply and drainage pressure pipeline of claim 1, wherein the included angle α is₁The value is 50-70 degrees; included angle alpha₂The value is 130-110 degrees.

4. The continuous fiber reinforced thermoplastic large caliber composite hydraulic supply and drainage pressure pipe of claim 1, wherein the plastic strip material is PP, PE, PA or PERT.

5. The continuous fiber reinforced thermoplastic large caliber composite hydraulic supply and drainage pressure pipe of claim 1, wherein the continuous fiber tape of the reinforced core layer (2) is a thermoplastic continuous fiber prepreg tape.

6. The continuous fiber reinforced thermoplastic large-caliber composite water supply and drainage pressure pipeline as claimed in claim 1, wherein the structural outer layer (3) is formed by continuously winding and welding structural bodies of different shapes, wherein the structural bodies comprise a rectangle, a trapezoid, a triangle, a U shape and a circle.