CN212131559U

CN212131559U - PE pipe

Info

Publication number: CN212131559U
Application number: CN201922301800.8U
Authority: CN
Inventors: 夏呈忠; 苏延彬
Original assignee: Yancheng Guangyuan Taiwei Pipe Co ltd
Current assignee: Yancheng Guangyuan Taiwei Pipe Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-12-11
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses a PE pipe, including the PE layer, the interval is equipped with the expansion joint between the PE layer, and the PE layer between the expansion joint is equipped with pipe diameter minification section, and the PE layer outside is equipped with fire-retardant layer, and fire-retardant layer outside is equipped with the anticorrosive coating. Simple structure, reasonable design and long service life.

Description

PE pipe

Technical Field

The utility model belongs to the technical field of the pipeline, concretely relates to PE pipe.

Background

PE, the acronym for polyethylene, has excellent resistance to most domestic and industrial chemicals. The plastic pipeline in China develops rapidly and the quality is improved continuously. At present, plastic pipe industries mainly including polyvinyl chloride (PVC-U) pipes, Polyethylene (PE) pipes, and polypropylene (PP-R) pipes have been primarily formed.

Among them, the Polyethylene (PE) pipe is widely used, has high strength, corrosion resistance and no toxicity, and can be used for buried drain pipes, building heating, gas transmission and distribution, gas transmission pipes and the like. The PE pipe commonly used at present is a single-layer single material, and has the characteristics of simple structure and lower production cost, but is easily influenced by a conveying medium and natural conditions when the medium is conveyed, and is limited in the aspects of service life, conveying medium type and the like.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model provides a PE pipe, simple structure, reasonable in design, long service life.

The utility model discloses a realize through following technical scheme: a PE pipe comprises a PE layer, expansion joints are arranged between the PE layer at intervals, pipe diameter reduction sections are arranged on the PE layer between the expansion joints, a flame-retardant layer is arranged on the outer side of the PE layer, and an anti-corrosion layer is arranged on the outer side of the flame-retardant layer.

The PE layer, the flame-retardant layer and the anticorrosive layer are combined into a whole through coextrusion.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses the interval is equipped with the expansion joint and can cushions the stress variation that expend with heat and contract with cold caused between the PE layer, and PE layer between the expansion joint is equipped with pipe diameter minification section, can make the medium flow under equal flow when, and the velocity of flow improves, has compensatied because the longer defect that causes medium flow power not enough of pipeline, has guaranteed the smooth flow of medium.

2. The utility model discloses the PE layer outside is equipped with fire-retardant layer, can prevent to the damage on PE layer under the high temperature conflagration, and fire-retardant layer outside is equipped with the anticorrosive coating, can prolong the life of tubular product.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the drawings: a PE layer; 2. a flame retardant layer; 3. an anticorrosive layer; 4. an expansion joint; 5. the pipe diameter is reduced.

Detailed Description

The PE pipe as shown in figure 1 in the attached drawings comprises PE layers 1, expansion joints 4 are arranged on the PE layers 1 at intervals, pipe diameter reduction sections 5 are arranged on the PE layers 1 between the expansion joints 4, a flame-retardant layer 2 is arranged on the outer side of the PE layers 1, and an anticorrosive layer 3 is arranged on the outer side of the flame-retardant layer 2.

The PE layer 1, the flame-retardant layer 2 and the anticorrosive layer 3 are combined into a whole through coextrusion.

The expansion joints are arranged at intervals between the PE layers of the utility model, so that the stress change caused by expansion with heat and contraction with cold can be buffered, the PE layers between the expansion joints are provided with the pipe diameter reduction sections, when a medium flows under the same flow, the flow speed is improved, the defect that the medium flow power is insufficient due to the longer pipeline is overcome, and the smooth flow of the medium is ensured; the PE layer outside is equipped with fire-retardant layer, can prevent to the damage on PE layer under the high temperature conflagration, and fire-retardant layer outside is equipped with the anticorrosive coating, can prolong the life of tubular product.

In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and all equivalent changes and modifications of the shapes, structures, features and spirit described in the claims of the present invention should be included in the scope of the present invention.

Claims

1. A PE tube, characterized by: the pipe diameter reducing device comprises a PE layer (1), expansion joints (4) are arranged on the PE layer (1) at intervals, pipe diameter reducing sections (5) are arranged on the PE layer (1) between the expansion joints (4), a flame-retardant layer (2) is arranged on the outer side of the PE layer (1), and an anticorrosive layer (3) is arranged on the outer side of the flame-retardant layer (2).

2. A PE pipe according to claim 1, wherein: the PE layer (1), the flame-retardant layer (2) and the anticorrosive layer (3) are combined into a whole through co-extrusion.