Multi-layer reinforced PE composite pipe

Abstract

The utility model discloses a multi-layer reinforced PE composite pipe, and belongs to the technical field of pipes. The multi-layer reinforced PE composite pipe comprises a composite pipe body, the composite pipe body comprises a lining layer, a reinforced transition layer, a main reinforced layer and a PE coating layer, the reinforced transition layer is arranged on the lining layer in a sleeving mode, the main reinforced layer is arranged on the reinforced transition layer in a sleeving mode, and the PE coating layer is arranged on the main reinforced layer in a sleeving mode. According to the multi-layer reinforced PE composite pipe, the reinforced transition layer is of a PE / glass fiber woven mesh composite structure, a high-strength stress transfer network is formed, the ring stiffness and the impact resistance of the pipe can be effectively improved, modulus mutation between the lining layer and the main reinforced layer can be relieved, the foaming PE layer serves as a buffering medium to absorb impact energy, the weight of the pipe body is reduced, and the service life of the pipe body is prolonged. The steel wire grid layer provides axial tensile strength and ring stiffness, modulus gradient transition is formed through alternate layout of the steel wire grid layer and the ring stiffness, stress concentration of the steel wire layer is restrained, and external loads are dispersed through elastic deformation of the foaming layer.

Description

Technical Field

[0001] This utility model relates to the field of pipe technology, and more specifically, to a multi-layer reinforced PE composite pipe. Background Technology

[0002] PE pipes are plastic pipes made from high-density polyethylene or medium-density polyethylene. They are lightweight, corrosion-resistant, impact-resistant, flexible, and have a long service life. Their smooth inner walls reduce water flow resistance, prevent scaling, and are non-toxic and odorless, meeting drinking water transportation standards. They are widely used in municipal water supply and drainage, gas transmission, agricultural irrigation, and industrial fluid transportation.

[0003] Ordinary polyethylene (PE) pipes are widely used in water supply, gas, chemical and other fields, but their mechanical properties are obviously insufficient, such as low ring stiffness, poor impact resistance and limited pressure resistance. They are prone to deformation or cracking, especially under complex working conditions. In the existing technology, some reinforced PE pipes use single steel wire winding or glass fiber reinforcement, which can improve strength, but there are problems such as weak interlayer bonding, reduced flexibility and increased weight. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a multi-layer reinforced PE composite pipe. Its reinforcing transition layer adopts a PE / glass fiber woven mesh composite structure, which can effectively improve the ring stiffness and impact resistance of the pipe, alleviate the modulus change between the inner lining layer and the main reinforcing layer, and prevent interlayer delamination. The main reinforcing layer adopts alternating foamed PE layers and steel wire mesh layers, which can suppress the stress concentration of the steel wire layer and disperse the external load through the elastic deformation of the foamed layer.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] A multi-layer reinforced PE composite pipe includes: a composite pipe body, the composite pipe body including an inner lining layer, a reinforcing transition layer, a main reinforcing layer and a PE covering layer, the reinforcing transition layer being sleeved on the inner lining layer, the main reinforcing layer being sleeved on the reinforcing transition layer, and the PE covering layer being sleeved on the main reinforcing layer.

[0009] As a preferred embodiment of the present invention, the composite pipe body further includes a barrier layer, which is sleeved on the PE coating layer.

[0010] As a preferred embodiment of this utility model, the barrier layer is made of ethylene-vinyl alcohol copolymer material.

[0011] As a preferred embodiment of the present invention, the composite tube further includes an outer protective layer, which is slidably sleeved on the barrier layer.

[0012] As a preferred embodiment of this utility model, the outer surface of the outer protective layer is provided with multiple axial reinforcing ribs.

[0013] As a preferred embodiment of this utility model, the outer protective layer is made of modified high-density polyethylene material.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, this utility model provides a multi-layer reinforced PE composite pipe, which has the following beneficial effects:

[0016] This multi-layer reinforced PE composite pipe features an inner lining made of food-grade high-density PE material and a reinforcing transition layer using a PE / glass fiber woven mesh composite structure. The composite of the glass fiber woven mesh and the PE matrix forms a high-strength stress transmission network, effectively improving the pipe's ring stiffness and impact resistance while mitigating modulus abrupt changes between the inner lining and the main reinforcing layer, preventing interlayer delamination. The main reinforcing layer employs alternating layers of foamed PE and steel wire mesh. The foamed PE layer acts as a buffer, absorbing impact energy and reducing pipe weight, while the steel wire mesh provides axial tensile strength and ring stiffness. This alternating arrangement creates a modulus gradient transition, suppressing stress concentration in the steel wire layer and dispersing external loads through the elastic deformation of the foamed layer. A PE coating layer completely covers the reinforcing transition layer and the main reinforcing layer, achieving physical coverage while strengthening corrosion protection, enhancing interlayer bonding, and ensuring sealing. The barrier layer uses an ethylene-vinyl alcohol copolymer material with an oxygen permeability only one-thousandth that of ordinary PE material, effectively preventing oxidation of the contents and effectively blocking odor penetration. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is a bottom view of the present invention.

[0020] Explanation of the labels in the diagram:

[0021] 1. Composite pipe body; 101. Inner lining layer; 102. Reinforcing transition layer; 103. Main reinforcing layer; 104. PE coating layer; 105. Barrier layer; 106. Outer protective layer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] Example:

[0024] Please see Figures 1-3 A multi-layer reinforced PE composite pipe includes: a composite pipe body 1, the composite pipe body 1 including an inner lining layer 101, a reinforcing transition layer 102, a main reinforcing layer 103 and a PE covering layer 104, the reinforcing transition layer 102 being sleeved on the inner lining layer 101, the main reinforcing layer 103 being sleeved on the reinforcing transition layer 102, and the PE covering layer 104 being sleeved on the main reinforcing layer 103.

[0025] In a specific embodiment of this utility model, the inner lining layer 101 is made of food-grade high-density PE material, and the reinforcing transition layer 102 is made of PE / glass fiber woven mesh composite structure. Through the composite of glass fiber woven mesh and PE matrix, a high-strength stress transmission network is formed, which can effectively improve the ring stiffness and impact resistance of the pipe, and alleviate the modulus change between the inner lining layer 101 and the main reinforcing layer 103, preventing interlayer delamination. The main reinforcing layer 103 is made of alternating foamed PE layer and steel wire mesh layer. The foamed PE layer acts as a buffer medium to absorb impact energy and reduce the weight of the pipe, while the steel wire mesh layer provides axial tensile strength and ring stiffness. The alternating layout of the two forms a modulus gradient transition, which not only suppresses the stress concentration of the steel wire layer, but also disperses the external load through the elastic deformation of the foamed layer. The PE covering layer 104 is used to completely cover the reinforcing transition layer 102 and the main reinforcing layer 103, achieving physical covering while strengthening anti-corrosion protection, enhancing interlayer bonding, and ensuring sealing.

[0026] Specifically, the composite pipe body 1 also includes a barrier layer 105, which is sleeved on the PE covering layer 104.

[0027] In this embodiment, the barrier layer 105 is used to reduce oxygen permeability and effectively prevent the contents from oxidizing.

[0028] Specifically, the barrier layer 105 is made of ethylene-vinyl alcohol copolymer material.

[0029] In this embodiment, the barrier layer 105 is made of ethylene-vinyl alcohol copolymer material, which has an oxygen permeability of one-thousandth that of ordinary PE material, effectively preventing the contents from oxidizing and effectively blocking odor penetration.

[0030] Specifically, the composite pipe body 1 also includes an outer protective layer 106, which is slidably sleeved on the barrier layer 105.

[0031] In this embodiment, the outer protective layer 106 is used to protect all the internal layers. The outer protective layer 106 has high protective strength, is not easy to crack, and has a long service life.

[0032] Specifically, the outer surface of the outer protective layer 106 is provided with multiple axial reinforcing ribs.

[0033] In this embodiment, the axial stiffeners give the composite tube 1 good resistance to bending deformation.

[0034] Specifically, the outer protective layer 106 is made of modified high-density polyethylene material.

[0035] In this embodiment, the outer protective layer 106 uses this material, which will not crack after long-term use, and has high protective strength and long service life.

[0036] Working principle: The inner lining layer 101 is made of food-grade high-density PE material, and the reinforcing transition layer 102 adopts a PE / glass fiber woven mesh composite structure. Through the composite of the glass fiber woven mesh and the PE matrix, a high-strength stress transfer network is formed, which effectively improves the ring stiffness and impact resistance of the pipe, and alleviates the modulus abrupt change between the inner lining layer 101 and the main reinforcing layer 103, preventing interlayer delamination. The main reinforcing layer 103 uses alternating foamed PE layers and steel wire mesh layers. The foamed PE layer acts as a buffer medium to absorb impact energy and reduce the weight of the pipe, while the steel wire mesh layer provides axial tensile strength and ring stiffness. The alternating layout of the two forms a modulus gradient transition, which suppresses the stress transfer between the inner lining layer 101 and the main reinforcing layer 103. The stress concentration in the filament layer is dispersed by the elastic deformation of the foam layer. The PE coating layer 104 is used to completely cover the reinforcing transition layer 102 and the main reinforcing layer 103, achieving physical coating while strengthening corrosion protection, enhancing interlayer bonding, and ensuring sealing. The barrier layer 105 is made of ethylene-vinyl alcohol copolymer material, with an oxygen permeability of one-thousandth that of ordinary PE material, effectively preventing oxidation of the contents and effectively blocking odor penetration. The outer protective layer 106 is made of modified high-density polyethylene material, which will not crack after long-term use, has high protective strength, and a long service life. The axial reinforcing ribs give the composite pipe body 1 good resistance to bending deformation.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A multi-layer reinforced PE composite pipe, characterized in that, include: The composite pipe body (1) includes an inner lining layer (101), a reinforcing transition layer (102), a main reinforcing layer (103), and a PE covering layer (104). The reinforcing transition layer (102) is sleeved on the inner lining layer (101), the main reinforcing layer (103) is sleeved on the reinforcing transition layer (102), and the PE covering layer (104) is sleeved on the main reinforcing layer (103).

2. A multi-layer reinforced PE composite pipe according to claim 1, characterized in that: The composite pipe body (1) also includes a barrier layer (105), which is sleeved on the PE covering layer (104).

3. A multi-layer reinforced PE composite pipe according to claim 2, characterized in that: The barrier layer (105) is made of ethylene-vinyl alcohol copolymer material.

4. The multi-layer reinforced PE composite pipe according to claim 1, characterized in that: The composite tube (1) also includes an outer protective layer (106), which is slidably sleeved on the barrier layer (105).

5. A multi-layer reinforced PE composite pipe according to claim 4, characterized in that: The outer surface of the outer protective layer (106) is provided with multiple axial reinforcing ribs.

6. A multi-layer reinforced PE composite pipe according to claim 4, characterized in that: The outer protective layer (106) is made of modified high-density polyethylene material.

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