CN216768614U

CN216768614U - Steel fiber reinforced polyethylene pressure pipeline

Info

Publication number: CN216768614U
Application number: CN202122882318.5U
Authority: CN
Inventors: 陈京生
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-06-17
Anticipated expiration: 2031-11-23

Abstract

The utility model discloses a steel fiber reinforced polyethylene pressure pipeline, which comprises a polyethylene core pipe inner layer, a steel wire reinforcing layer, a steel fiber layer, a continuous glass fiber belt layer and a polyethylene outer layer, wherein the steel wire reinforcing layer is coated on the periphery of the polyethylene core pipe inner layer and is fused and bonded with the polyethylene core pipe inner layer together through an adhesive; the steel fiber layer is of a cylindrical structure, wraps the periphery of the steel wire reinforcing layer and is fused and bonded with the steel wire reinforcing layer through an adhesive; the continuous glass fiber belt layer is wound and melt-adhered to the periphery of the steel fiber layer; the outer polyethylene layer is coated on the periphery of the continuous glass fiber belt layer and is bonded with the continuous glass fiber belt layer through the melting of the adhesive. The utility model can bear larger pressure, has high tensile strength, excellent firmness and corrosion resistance, long service life and stronger practicability.

Description

Steel fiber reinforced polyethylene pressure pipeline

Technical Field

The utility model relates to the technical field of composite pipelines, in particular to a steel fiber reinforced polyethylene pressure pipeline.

Background

With the development of plastic pipeline industry in China, polyethylene pipelines are widely applied in the municipal and building water supply field, the gas transmission and distribution field and the like in recent years, but the existing polyethylene pressure pipelines still have the problems of poor corrosion resistance, poor tensile strength and short service life. Meanwhile, the traditional pipe connection form can lead to instability of the connection part, the pressure bearing capacity of the connection part is reduced, and the accident probability of the pipe can be correspondingly increased.

Therefore, how to improve the structure of the existing polyethylene pressure pipeline to effectively overcome the above technical problems is an important research topic for those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of the above, the utility model provides a steel fiber reinforced polyethylene pressure pipeline, which has the following specific technical scheme:

a steel fiber reinforced polyethylene pressure pipeline comprises a polyethylene core pipe inner layer, a steel wire reinforcing layer, a steel fiber layer, a continuous glass fiber belt layer and a polyethylene outer layer, wherein the steel wire reinforcing layer is coated on the periphery of the polyethylene core pipe inner layer and is fused and bonded with the polyethylene core pipe inner layer through an adhesive; the steel fiber layer is of a cylindrical structure, wraps the periphery of the steel wire reinforcing layer and is fused and bonded with the steel wire reinforcing layer through an adhesive; the continuous glass fiber tape layer is wound and melt-adhered to the periphery of the steel fiber layer; the polyethylene outer layer is coated on the periphery of the continuous glass fiber tape layer and is bonded with the continuous glass fiber tape layer through the melting of an adhesive.

By adopting the technical scheme, the steel wire reinforcing layer, the steel fiber layer and the continuous glass fiber tape layer are sequentially arranged in the polyethylene pressure pipeline, and the firmness and the stretchability of the polyethylene pressure pipeline can be effectively improved under the combined action of the steel wire reinforcing layer and the steel fiber layer; the high strength characteristic of continuous glass fiber belt layer can increase the hoop strength and axial strength of the pipe, and the corrosion resistance of the chemical components of the glass fiber belt is good, so that the corrosion resistance of the polyethylene pressure pipeline can be effectively improved.

Preferably, the steel fiber layer is a net-shaped framework formed by winding and winding steel fibers in a left-right continuous spiral mode or a steel cylinder framework formed by punching thin steel plates and then welding.

Preferably, the steel fiber is a cold-drawn steel wire with the diameter of 0.2-0.4 mm.

Preferably, the surface of the steel fiber is free from dirt and defects such as breakage and indentation which are harmful to use.

Preferably, the surface of the thin steel plate is plated with an anti-rust layer, and the surface of the anti-rust layer is flat and smooth, does not fall off, does not leak plating and does not have dirt.

Preferably, the continuous fiberglass tape layer is wound with at least one layer.

Preferably, the steel fiber reinforced polyethylene pressure pipeline further comprises a PP protective layer and a self-adhesive reinforced belt, wherein the PP protective layer is coated on the periphery of the polyethylene outer layer and is abutted against the outer surface of the polyethylene outer layer; the self-adhesive reinforcing tape is wound at positions close to two ends of the PP protective layer and has a preset distance from the end part of the PP protective layer.

Set up the PP protective layer and can prevent ultraviolet irradiation, anti-aging, also can prevent the fish tail in the transportation, influence the stability of compound pipe, stability and reliability when setting up self-adhesion reinforcing tape at the both ends edge of compound pipe and can strengthening the pipe connection increase the bearing capacity, the PP protective layer of self-adhesion reinforcing tape outer end can use the art designer's sword to peel off and spill the inside polyethylene skin, directly through the adjacent compound pipe of hot melt pipe fitting butt joint polyethylene skin connection, the efficiency of construction is improved.

Preferably, the self-adhesive reinforced tape is a PE material tape adhesive bonding tape, a glass fiber material tape adhesive bonding tape, a PVC material tape adhesive bonding tape or a stainless steel material tape adhesive bonding tape.

Preferably, the self-adhesive reinforcing tape is wound on the outer side or the inner side of the PP protective layer, and the preset distance between the self-adhesive reinforcing tape and the end part of the PP protective layer is 10-20 cm.

Preferably, the thickness of the PP protective layer is 0.05-10 mm; the thickness of the polyethylene outer layer is 2-20 mm.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a cross-sectional view of one embodiment of a steel fiber reinforced polyethylene pressure pipe of the present invention.

Fig. 2 is a schematic connection diagram of the steel fiber reinforced polyethylene pressure pipe in fig. 1.

Fig. 3 is a cross-sectional view of another embodiment of the steel fiber reinforced polyethylene pressure pipe of the present invention.

Wherein, in the figure,

the heat-insulation composite pipe comprises, by weight, 1-a polyethylene core pipe inner layer, 2-a steel wire reinforcing layer, 3-a steel fiber layer, 4-a continuous glass fiber tape layer, 5-a polyethylene outer layer, 6-a PP protective layer, 7-a self-adhesive reinforcing tape and 8-a hot-melting pipe fitting.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1, the steel fiber reinforced polyethylene pressure pipe of the present invention comprises a polyethylene core pipe inner layer 1, a steel wire reinforced layer 2, a steel fiber layer 3, a continuous glass fiber tape layer 4, a polyethylene outer layer 5, a PP protective layer 6 and a self-adhesive reinforced tape 7.

The steel wire reinforcement layer 2 is coated on the periphery of the inner polyethylene core tube layer 1 and is bonded with the inner polyethylene core tube layer 1 through adhesive in a melting mode; the steel fiber layer 3 is of a cylindrical structure, covers the periphery of the steel wire reinforcing layer 2 and is fused and bonded with the steel wire reinforcing layer 2 through an adhesive; the continuous glass fiber belt layer 4 is wound and melt-adhered to the periphery of the steel fiber layer 3; the polyethylene outer layer 5 is coated on the periphery of the continuous glass fiber belt layer 4 and is fused and bonded with the continuous glass fiber belt layer 4 through an adhesive; the PP protective layer 6 is coated on the periphery of the polyethylene outer layer 5 and is abutted with the outer surface of the polyethylene outer layer 5; the self-adhesive reinforcing tape 7 is wound at positions close to both ends of the PP protective layer 6 and at a predetermined distance d from the ends of the PP protective layer 6.

In some embodiments, the steel fiber layer 3 is a net-shaped framework formed by winding steel fibers continuously and spirally left and right or a steel cylinder framework formed by punching thin steel plates and welding.

Wherein the steel fiber is a cold-drawn steel wire with the diameter of 0.2-0.4 mm. The surface of the steel fiber should be free of dirt such as oil stain, rust stain and dirt, and free of defects such as breakage and indentation which are harmful to use. The winding angle α between the steel fibers and the polyethylene core axial direction is generally: alpha is more than or equal to 54.7 degrees and less than or equal to 60 degrees.

The surface of the thin steel plate needs to be plated with an anti-rust layer, and the surface of the anti-rust layer is smooth and flat without falling off, plating leakage, oil stain, dust and other dirt.

In other embodiments, to ensure the corrosion protection effect, the continuous fiberglass tape layer 4 is wrapped with at least one layer. The continuous glass fiber tape layer 4 is usually wound and fused on the periphery of the steel fiber layer 3 in a multi-layer manner at an inclined angle of 40-65 degrees.

The thickness of the PP protective layer 6 is 0.05-10 mm. The self-adhesive reinforcing tape 7 is any one of a PE material tape adhesive tape, a glass fiber material tape adhesive tape, a PVC material tape adhesive tape or a stainless steel material tape adhesive tape. Or a PP ring, a PE ring, a PVC ring, a stainless steel ring and a glass fiber reinforced plastic ring with certain width.

In one embodiment, the self-adhesive reinforcing tape 7 may be wound on the outside of the PP protective layer 6, as shown in fig. 1; in another embodiment, the self-adhesive reinforcing tape 7 can also be wound inside the PP protective layer 6, as shown in fig. 3.

Specifically, the self-adhesive reinforcing tape 7 is wound around the circumference of a predetermined distance d, and the predetermined distance d may be 10-20 cm, preferably 10cm, so as to facilitate connection of the hot-melt pipe 8.

The process of connecting the pressure pipeline by adopting the hot-melting pipe fitting 8 is as follows: peeling the PP material at a preset distance from the end part of the PP protective layer 6 or peeling the material of the PP protective layer 6 at the outer end of the self-adhesive reinforced belt 7 by using an art designer knife to expose the inner polyethylene outer layer 5; then as shown in fig. 2, the hot-melt pipe 8 is sleeved on the polyethylene outer layer 5 corresponding to the space between the pipeline and the pipe, and the inner wall of the hot-melt pipe 8 is abutted to the outer surface of the polyethylene outer layer 5 and then is electrified, so that the pipeline and the pipe are bonded into a whole. In the process, the self-adhesive reinforcing belt 7 with a limiting effect is wound on the part, close to the hot-melting pipe fitting 8, of the pressure pipeline, so that the bulging phenomenon at the position is avoided, the phenomenon that the steel wire slides due to the fact that the steel wire reinforcing layer 2, the steel fiber layer 3 and the like inside the pressure pipeline are heated and melted is caused by the fact that the steel wire has tension is avoided, and the subsequent using effect of the pressure pipeline is ensured.

Specifically, the outer 5 thickness of polyethylene generally is 2 ~ 20mm, preferred 10mm, and heating temperature influences steel wire enhancement layer 2, steel fiber layer 3, the fine band layer 4 of continuous glass in the pipeline under pressure when preventing 8 connections of hot melt pipe fitting, avoids the unstability.

The steel fiber reinforced polyethylene pressure pipeline can bear larger pressure, has high tensile strength, excellent firmness and corrosion resistance, long service life and stronger practicability.

Most pressure pipelines connected by the traditional process in the market have the phenomenon of bulging at the joint of a pipe fitting and a pipe, because the hot-melt pipe fitting 8 is adopted for connection and needs to be heated to about 200 degrees of the melting point of polyethylene, the surface of the pressure pipeline and the inner surface of the pipe fitting are hot-melted, the pipe fitting and the pressure pipeline can be connected, but the hot melting pipe fitting 8 heats the surface contacted with the pressure pipeline at the same time, so that the steel wire reinforcing layer 2 and the steel fiber layer 3 in the pressure pipeline are melted, the steel wire has tension, the phenomenon of steel wire slippage can occur, the self-adhesive reinforcing tape 7 which has a limiting effect is wound around the joint to avoid the bulge phenomenon at the corresponding position during hot melting heating, so that the stability of the joint is improved, and the pressure bearing capacity of the joint of the pressure pipeline is improved.

The PP protective layer 6 can prevent the outer polyethylene layer 5 from being oxidized and polluted, and the PP protective layer 6 at the outer end of the self-adhesion reinforcing belt 7 is peeled off and directly connected with the hot-melt pipe fitting 8 in a splicing mode during connection construction, so that the operation is convenient, and the connection efficiency can be improved.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The steel fiber reinforced polyethylene pressure pipeline is characterized by comprising a polyethylene core pipe inner layer, a steel wire reinforcing layer, a steel fiber layer, a continuous glass fiber belt layer and a polyethylene outer layer, wherein the steel wire reinforcing layer is coated on the periphery of the polyethylene core pipe inner layer and is fused and bonded with the polyethylene core pipe inner layer through an adhesive; the steel fiber layer is of a cylindrical structure, covers the periphery of the steel wire reinforcing layer and is fused and bonded with the steel wire reinforcing layer through an adhesive; the continuous glass fiber tape layer is wound and melt-adhered to the periphery of the steel fiber layer; the polyethylene outer layer is coated on the periphery of the continuous glass fiber tape layer and is bonded with the continuous glass fiber tape layer through the melting of an adhesive.

2. The steel fiber reinforced polyethylene pressure pipe as claimed in claim 1, wherein the steel fiber layer is a net-shaped framework formed by winding steel fiber in a left-right spiral manner or a steel cylinder framework formed by punching a thin steel plate and welding.

3. The steel fiber reinforced polyethylene pressure pipe according to claim 2, wherein the steel fiber is a cold drawn steel wire with a diameter of 0.2-0.4 mm.

4. A steel fibre reinforced polyethylene pressure pipe according to claim 2 or 3, wherein the steel fibre surface is free of dirt, breakage and indentation.

5. The steel fiber reinforced polyethylene pressure pipe as claimed in claim 2, wherein the thin steel plate is coated with an anti-rust layer, and the surface of the anti-rust layer is smooth, does not fall off, and has no plating leakage and no dirt.

6. The steel fiber reinforced polyethylene pressure pipe of claim 1, wherein said continuous fiberglass tape layer is wrapped with at least one layer.

7. The steel fiber reinforced polyethylene pressure pipeline according to claim 1, further comprising a PP protective layer and a self-adhesive reinforcing tape, wherein the PP protective layer is wrapped around the outer polyethylene layer and abuts against the outer surface of the outer polyethylene layer; the self-adhesive reinforcing tape is wound at the position close to the two ends of the PP protective layer, and the distance between the self-adhesive reinforcing tape and the end part of the PP protective layer is a preset distance.

8. The steel fiber reinforced polyethylene pressure pipe according to claim 7, wherein the self-adhesive reinforcing tape is a PE material tape adhesive tape, a glass fiber material tape adhesive tape, a PVC material tape adhesive tape or a stainless steel material tape adhesive tape.

9. The steel fiber reinforced polyethylene pressure pipeline according to claim 7, wherein the self-adhesive reinforcing tape is wound on the outer side or the inner side of the PP protective layer, and the predetermined distance between the self-adhesive reinforcing tape and the end part of the PP protective layer is 10-20 cm.

10. The steel fiber reinforced polyethylene pressure pipe according to claim 7, wherein the thickness of the PP protective layer is 0.05-10 mm; the thickness of the polyethylene outer layer is 2-20 mm.