CN216952055U

CN216952055U - Reinforced and toughened PE pipe

Info

Publication number: CN216952055U
Application number: CN202122997073.0U
Authority: CN
Inventors: 卜亚祥; 刘承光; 颜爱忠
Original assignee: Jiangsu Zhongsu Water Saving Technology Co ltd
Current assignee: Jiangsu Zhongsu Water Saving Technology Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-07-12
Anticipated expiration: 2031-12-02

Abstract

The utility model relates to the technical field of PE pipelines, in particular to a reinforced and toughened PE pipe, which comprises a first polyethylene layer, a reinforcing layer and a resin layer, wherein the first polyethylene layer, the reinforcing layer and the resin layer are distributed from inside to outside; the reinforcing layer comprises a second polyethylene layer fixed to the outer wall of the first polyethylene layer, a first wire wrapped on the outer wall of the second polyethylene layer and a plurality of second wires longitudinally wrapped on the outer layer of the first wire; the resin layer is adhered to the outer wall of the reinforcing layer. According to the utility model, the lapping and the axially-arranged reinforcing wires are arranged in the PE pipe, the lapping and the axially-distributed wires form a latticed support body on the outer layer of the high-density polyethylene, and the lapping and the axially-distributed wires are fixedly formed by the outer resin layer and the outer glass fiber layer, so that the thickness of the resin layer can be reduced, the size of the pipeline can be reduced, the bearing, compression and impact strength of the pipeline can be improved, the pipeline loss can be reduced in laying and transportation, and the service life of the pipeline can be prolonged.

Description

Reinforced and toughened PE pipe

Technical Field

The utility model relates to the technical field of PE pipelines, in particular to a reinforced and toughened PE pipe.

Background

The PE pipe has the characteristics of light weight, corrosion resistance, service life of 50 years generally and no need of corrosion resistance. The PE pipe can easily bypass or avoid obstacles by utilizing the natural bending of the pipe, and is very suitable for being laid under the condition of many underground pipelines and obstacles on urban streets.

However, although various modifiers can be added to the existing PE pipe, the mechanical properties, aging resistance, stability, and easy deformation of the PE pipe are far from those of steel materials, and when the PE pipe is used to convey pressure fluid, the thickness of the pipe wall must be increased, which increases the manufacturing cost.

In addition, the mechanical strength of the PE pipe is low, and the PE pipe is easily damaged by human factors during or after the laying process, for example, the PE pipe is squeezed or impacted by an external force of a sharp object during the transportation or after the laying process, so that the pipe is damaged or cracked.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects and shortcomings of the PE pipe in the prior art, the utility model aims to improve the strength of the PE pipe, particularly improve the local impact resistance and guarantee the conveying capacity of the PE pipe.

The utility model aims to provide a reinforced and toughened PE pipe, which comprises a first polyethylene layer, a reinforcing layer and a resin layer, wherein the first polyethylene layer, the reinforcing layer and the resin layer are distributed from inside to outside;

the reinforcing layer comprises a second polyethylene layer fixed to the outer wall of the first polyethylene layer, a first wire wrapped on the outer wall of the second polyethylene layer and a plurality of second wires longitudinally wrapped on the outer layer of the first wire;

the resin layer is adhered to the outer wall of the reinforcing layer;

wherein the first filament includes a mixed bundle formed of twisted steel wires and carbon fiber multifilaments between the steel wires, and the second filament includes the twisted steel wires and the mixed bundle.

Preferably, the twisted steel wire is formed by concentrically twisting 1+6 monofilaments.

Preferably, the diameter of the stranded steel wire is 3-5mm, and the diameter of the carbon fiber multifilament is 0.1-0.2 mm.

Preferably, the stranded wires and the mixed bundles are distributed at intervals on the outer wall of the first wire.

Preferably, the angular spacing between the second wires is ten degrees.

Preferably, the pitch of the first wire is 5-10 cm.

Preferably, the second polyethylene layer has a thickness of 2 to 3 mm.

Preferably, a glass fiber net is embedded in the resin layer.

Preferably, the outer wall of the resin layer is provided with an ultraviolet-resistant layer.

Compared with the prior art, the utility model has the advantages that:

according to the utility model, the lapping and the axially-arranged reinforcing wires are arranged in the PE pipe, the lapping and the axially-distributed wires form a latticed support body on the outer layer of the high-density polyethylene, and the lapping and the axially-distributed wires are fixedly formed by the outer resin layer and the outer glass fiber layer, so that the thickness of the resin layer can be reduced, the size of the pipeline can be reduced, the bearing, compression and impact strength of the pipeline can be improved, the pipeline loss can be reduced in laying and transportation, and the service life of the pipeline can be prolonged.

Drawings

FIG. 1 is a schematic structural view of a reinforced and toughened PE pipe according to the present invention;

FIG. 2 is a schematic cross-sectional view of a reinforced and toughened PE pipe according to the present invention;

fig. 3 is a schematic view illustrating a structure of a stranded wire according to the present invention;

fig. 4 is a schematic diagram of the structure of the hybrid bundle shown in the present invention.

Detailed Description

In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.

The PE pipeline comprises an inner core formed by a first polyethylene layer and a resin layer arranged on the outer layer of the inner core, and when the PE pipeline is used in large-scale agricultural automatic irrigation and a water supply pipeline is laid under a soil scene with a large stone content, the pipeline can be scratched or impacted by the edge of a stone to generate cracks, and the cracks extend to cause leakage under the environment with soil covering pressure and temperature change.

Referring to fig. 1-2, the present invention provides a reinforced and toughened PE pipe, which includes a first polyethylene layer 1, a reinforcing layer 2 and a resin layer 3 distributed from inside to outside.

The enhancement layer 2 includes fixed to the second polyethylene layer of first polyethylene layer 1 outer wall, around the first silk material 21 of package at second polyethylene layer outer wall and indulge the many second silk materials of package at first silk material outer 22.

In an alternative embodiment, the second polyethylene layer of the outer wall of the first polyethylene layer 1 is co-extruded with the first polyethylene layer 1.

The first polyethylene layer 1 has a density greater than the second polyethylene layer, for example by coextrusion techniques known in the art to produce a high density polyethylene layer (i.e. the first polyethylene layer 1) and a low density polyethylene layer (i.e. the second polyethylene layer). The high-density polyethylene layer is in particular a layer having a density higher than 0.94g/cm³The HDPE of (2) realizes a high-hardness outer protective layer; the low-density polyethylene layer has a density of 0.91-0.94g/cm³The LDPE of (3) has relatively low hardness and good elasticity.

Preferably, the thickness of the second polyethylene layer is 2-3mm, and the second polyethylene layer has certain elasticity, so that the second polyethylene layer becomes an adhesion layer of the wire material, can provide certain buffer effect, improves the overall flexibility of the pipeline, and is matched with the strength of the wire material to form the pipeline with high toughness and high strength.

Wherein the first filament 21 includes a mixed bundle formed of twisted steel wires and carbon fiber multifilaments 5 between the steel wires 4, and the second filament 22 includes twisted steel wires and the mixed bundle.

Further, the pitch of the first wire is 5-10cm, and the first wire is wound to form a high-strength pipeline structure.

In an alternative embodiment, shown in connection with fig. 3-4, the stranded steel wires are formed by concentrically stranding 1+6 filaments, i.e. stranding one at the center + six at the periphery as shown. The diameter of the twisted steel wire is 3-5mm, in the process of manufacturing and forming the mixed bundle, the steel wire 4 is twisted, simultaneously, the carbon fiber multifilaments 5 are interwoven among the steel wires 4, the mixed bundle formed by the steel wires 4 and the carbon fiber multifilaments 5 is formed, the strength is improved, and simultaneously, the diameter of the steel wire is reduced, so that the weight is reduced.

In an alternative embodiment, the carbon fiber multifilament yarn has a diameter of 0.1-0.2mm, so that the carbon fiber multifilament yarn can be filled in gaps between the steel wires 4 to improve the stranding density and achieve higher tensile strength and toughness, and is spirally arranged behind the second polyethylene layer to improve the radial bearing capacity of the first polyethylene layer 1 and the axial toughness of the pipeline.

Further, the distribution of stranded steel wire and mixed bundle interval is at the outer wall of first silk material 21, so, forms latticed bearing structure at the skin on first polyethylene layer 1, can improve local impact resistance and compressive capacity, especially little to with the pipeline contact surface, and comparatively sharp-pointed stone plays better protective effect.

In an alternative embodiment, one stranded wire and one mixed bundle are spaced apart and the spacing between each two adjacent wires is 10 degrees.

In other embodiments, two or three stranded wires may be formed in a group, each of which is spaced apart by a corresponding angle, formed as a unit with one mixed bundle, and arranged at equal intervals on the outer wall of the first wire 21.

Wherein, the angular interval of the second wire is preferably ten degrees, and the higher the density is, the higher the strength is.

Meanwhile, the axial strength of the pipeline is further improved, and particularly, when overhead arrangement is carried out, the supporting distance can be increased, and the number of supporting points is reduced.

Further, the resin layer 3 is adhered to the outer wall of the reinforcing layer 2; inlay in the resin layer 3 and be equipped with glass fiber net, wherein, at glass fiber net's inlayer, the resin layer fuses fixedly with first silk material 21 and second silk material 22, is favorable to attaching to of resin layer 3, is equipped with anti ultraviolet layer at the skin of resin layer 3 to improve the oxidation resistance.

According to the embodiment, the wrapping and axial arrangement of the reinforcing wire materials are arranged in the PE pipe, the wrapping and axial distribution of the wire materials form the latticed support body on the outer layer of the high-density polyethylene, and the mesh support body is fixedly formed by the outer resin layer and the outer glass fiber layer, so that the thickness of the resin layer can be reduced, the size of the pipeline is reduced, the bearing capacity, the compression resistance and the impact resistance strength of the pipeline are improved, the pipeline loss is reduced in laying and transportation, and the service life of the pipeline is prolonged.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. The reinforced and toughened PE pipe is characterized by comprising a first polyethylene layer, a reinforcing layer and a resin layer which are distributed from inside to outside; the reinforcing layer comprises a second polyethylene layer fixed to the outer wall of the first polyethylene layer, a first wire wrapped on the outer wall of the second polyethylene layer and a plurality of second wires longitudinally wrapped on the outer layer of the first wire; the resin layer is attached to the outer wall of the reinforcing layer; wherein the first filament includes a mixed bundle formed of twisted steel wires and carbon fiber multifilaments between the steel wires, and the second filament includes the twisted steel wires and the mixed bundle.

2. The reinforced and toughened PE pipe of claim 1 wherein said stranded steel wires are formed from 1+6 monofilaments concentrically stranded.

3. The reinforced and toughened PE pipe as claimed in claim 1, wherein the stranded steel wires have a diameter of 3-5mm and the carbon fiber multifilaments have a diameter of 0.1-0.2 mm.

4. The reinforced and toughened PE tube of claim 1 wherein the stranded wires and the mixed bundles are spaced apart on the outer wall of the first wire.

5. The reinforced and toughened PE pipe of claim 1 wherein the angular spacing between the second wires is ten degrees.

6. The reinforced and toughened PE pipe of claim 1 wherein the pitch of the first wire is 5-10 cm.

7. The reinforced and toughened PE pipe of claim 1 wherein the second polyethylene layer has a thickness of 2-3 mm.

8. The reinforced and toughened PE pipe as claimed in claim 1, wherein a fiberglass mesh is disposed in the resin layer.

9. The reinforced and toughened PE pipe as claimed in claim 1, wherein the outer wall of the resin layer is provided with an ultraviolet resistant layer.

10. The reinforced and toughened PE pipe of any one of claims 1 to 9 wherein the density of the first polyethylene layer is greater than the density of the second polyethylene layer.