CN216643343U

CN216643343U - Adhesive plastic high-pressure composite pipe with continuous fiber winding and lapping structure

Info

Publication number: CN216643343U
Application number: CN202123149539.8U
Authority: CN
Inventors: 杨维国
Original assignee: Sichuan Huike Hechuang Machinery Technology Co ltd
Current assignee: Sichuan Huike Hechuang Machinery Technology Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-05-31
Anticipated expiration: 2031-12-15

Abstract

The utility model discloses a cohesive plastic high-pressure composite pipe with a continuous fiber winding and lapping structure, which comprises a plastic inner pipe layer, a lapping structure reinforcing core layer and an outer layer from inside to outside in sequence; the lap joint structure reinforcing core layer is formed by winding a plurality of continuous fiber prepreg tapes in a staggered way along the axial direction of the inner pipe according to a set angle alpha, and hot melting, laying and fusing the continuous fiber prepreg tapes on the inner pipe layer; a first continuous fiber prepreg tape is spirally wound from left to right, hot-melted, laid and coated on the inner pipe layer, and a repeated overlapping area is formed between the wound tapes; spirally winding a second continuous fiber prepreg tape from right to left, hot-melting, laying, melting and pasting the second continuous fiber prepreg tape to cover the first continuous fiber prepreg tape, and overlapping a repeated area between the wound tapes; until all the continuous fiber prepreg tapes are wound. The utility model has reasonable structural design, convenient and quick manufacture, high practicability and suitability for popularization and use; the pipe material has high rigidity and flexibility, can bear external pressure load, and is a high-rigidity, tensile and compressive composite pipe.

Description

Adhesive plastic high-pressure composite pipe with continuous fiber winding and lapping structure

Technical Field

The utility model belongs to the field of plastic pipeline manufacturing, and particularly relates to a cohesive plastic high-pressure composite pipe with a continuous fiber winding and overlapping structure.

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 2013JEC 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-caliber (less than 200 mm) pipelines or low-pressure drainage pipelines, the development field of large-caliber pipelines has the defects of high product cost, low production efficiency, low market competitiveness and the like, large-scale popularization and application in the market of the large-caliber pipelines cannot be realized, and the fiber reinforced large-caliber 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 cohesive plastic high-pressure composite pipe with a continuous fiber winding and overlapping structure.

The utility model relates to a cohesive plastic high-pressure composite pipe with a continuous fiber winding and lapping structure.

The lap joint structure reinforcing core layer is formed by winding a plurality of continuous fiber prepreg tapes in a staggered way along the axial direction of the inner pipe according to a set angle alpha, hot melting, laying and adhering the continuous fiber prepreg tapes on the inner pipe layer; spirally winding a first continuous fiber prepreg tape from left to right, hot melting, laying and coating the tape on the inner pipe layer, and overlapping a repeated area between the wound tape and the tape; spirally winding a second continuous fiber prepreg tape from right to left, hot-melting, laying, melting and pasting the second continuous fiber prepreg tape on the first continuous fiber prepreg tape, and overlapping a repeated area between the wound tapes; until all the continuous fiber prepreg tapes are wound.

Further, the width of the overlapping repeated area is 8-15 mm.

Furthermore, the spiral winding included angle alpha of the continuous fiber prepreg tape ranges from 40 degrees to 75 degrees.

Further, the pipe diameter of the composite pipe is not more than 1600 mm.

Further, the continuous fiber prepreg tape material is PP, PE, PERT or other thermoplastic plastics.

Further, the outer layer is formed by extruding and cladding by an extruder or continuously winding and welding structural bodies with different shapes, wherein the structural bodies comprise a rectangle shape, a trapezoid shape, a triangle shape, a U shape and a circle shape.

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

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.

Drawings

FIG. 1 is a schematic view of the tubing of the present invention.

FIG. 2 is a schematic representation of the winding of a first continuous fiber prepreg tape of the present invention.

Fig. 3 is a schematic winding of a second continuous fiber prepreg tape 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 utility model relates to a cohesive plastic high-pressure composite pipe with a continuous fiber winding and lapping structure, which is characterized in that as shown in figure 1, an inner plastic pipe layer 1, a lapping structure reinforcing core layer 2 and an outer layer 3 are sequentially arranged from inside to outside, and the pipe diameter of the composite pipe is not more than 1600 mm.

The inner pipe layer 1 is a single thermoplastic or a multilayer inner pipe consisting of thermoplastic, blocking agent, adhesive and plastic.

The lap joint structure reinforcing core layer 2 is formed by winding a plurality of continuous fiber prepreg tapes in a staggered way along the axial direction of the inner pipe according to a set angle alpha, hot melting, laying and adhering the continuous fiber prepreg tapes on the inner pipe layer 1. As shown in fig. 2, a first continuous fiber prepreg tape 21 is spirally wound from left to right and hot-melt-applied to cover the inner pipe layer 1, and a repeated overlapping area 20 is formed between the wound tape and the tape, and the width of the repeated overlapping area 20 is 8-15 mm. As shown in fig. 3, a second continuous fiber prepreg tape 22 is spirally wound from right to left, hot-melt-laid, and coated on the first continuous fiber prepreg tape 21, with overlapping repeated regions 20 between the wound tapes; until all the continuous fiber prepreg tapes are wound.

The outer layer 3 is formed by extruding and coating by an extruder or continuously winding and welding structural bodies with different shapes, wherein the structural bodies comprise a rectangle, a trapezoid, a triangle, a U shape and a circle.

The utility model relates to a three-layer high-rigidity, tensile and compressive composite pipe body which is composed of a plastic inner pipe layer 1, a lap joint structure reinforced core layer 2 and an outer layer 3. The lap joint structure reinforced core layer 2 independently bears or jointly bears 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 spirally wound continuous fiber belt layer, and the safety factor 3 is designed.

Axial load (stress): axial stress due to uneven sagging or the like during manufacturing and handling and after burying is received by the continuous fiber prepreg tape layer which is hot-melt laid in the axial direction.

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 1.6 MPa-40 MPa, and the requirement of the caliber of not more than 1600mm on the comprehensive mechanics of axial tension and annular pressure is met.

Claims

1. A plastic high-pressure composite pipe with a continuous fiber winding and lapping structure and cohesiveness is characterized in that the composite pipe sequentially comprises a plastic inner pipe layer (1), a lapping structure reinforcing core layer (2) and an outer layer (3) from inside to outside;

the lap joint structure reinforcing core layer (2) is formed by winding a plurality of continuous fiber prepreg tapes in a staggered way along the axial direction of the inner pipe according to a set angle alpha, hot melting, laying and fusing to be attached to the inner pipe layer (1); a first continuous fiber prepreg tape (21) is spirally wound from left to right, hot-melted, laid and coated on the inner pipe layer (1), and a repeated area (20) is overlapped between the wound tapes; a second continuous fiber prepreg tape (22) is spirally wound from right to left, is hot-melted, is laid and is covered on the first continuous fiber prepreg tape (21), and a repeated area (20) is overlapped between the wound tapes; until all the continuous fiber prepreg tapes are wound.

2. The bonded plastic high pressure composite pipe of continuous filament wound lap joint construction of claim 1, wherein said lap joint repeat region (20) is 8-15mm wide.

3. The continuous fiber winding and overlapping structure cohesive plastic high-pressure composite pipe as claimed in claim 1, wherein the spiral winding included angle α of the continuous fiber prepreg tape is 40-75 °.

4. The continuous filament wound lap joint structural cementitious plastic high pressure composite pipe as claimed in claim 1, wherein said composite pipe has a pipe diameter not greater than 1600 mm.

5. The bonded plastic high pressure composite pipe of continuous filament wound lap joint structure of claim 1, wherein the continuous fiber prepreg tape material is PP, PE or PERT.

6. The plastic high-pressure composite pipe with the continuous fiber winding and lap joint structural adhesive property as claimed in claim 1, wherein the outer layer (3) is formed by extrusion coating of an extruder or continuous winding and welding of structural bodies with different shapes, wherein the structural bodies comprise a rectangle, a trapezoid, a triangle, a U shape and a circle.