PE water pipe lined with corrosion-resistant alloy

Abstract

The utility model discloses PE water supply pipe of corrosion -resistant alloy layer's lining, relates to water supply pipe technical field, and its technical key points include PE main body structure layer, corrosion -resistant alloy lining layer, reinforcing layer and outer protective layer, corrosion -resistant alloy lining layer sets up in the inside of PE main body structure layer, reinforcing layer sets up in the outside of PE main body structure layer, outer protective layer sets up in the outside of reinforcing layer, reinforcing layer includes pressure -resistant buffer layer and tough layer, pressure -resistant buffer layer sets up in the outside of PE main body structure layer, and tough layer sets up between pressure -resistant buffer layer and outer protective layer. Technical effect is through setting up corrosion -resistant alloy lining layer, can play the role of resistance medium corrosion, prevents the corrosive component in conveying medium from causing the erosion to pipeline, ensures water quality and is not polluted, prolongs the service life of pipeline simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of water supply pipe technology, specifically to a PE water supply pipe lined with a corrosion-resistant alloy layer. Background Technology

[0002] PE pipes have advantages such as excellent performance, simple construction, reliable operation, convenient maintenance, long service life, and low investment cost. They are currently widely used in municipal engineering, underground drainage and sewage in residential areas; pre-buried pipelines for highways; irrigation and drainage in farmland; and fluid transportation in chemical and mining industries.

[0003] In modern water supply systems, although ordinary PE water supply pipes have good flexibility, chemical resistance and ease of construction, their corrosion resistance is still limited when transporting media containing corrosive substances (such as acid and alkali solutions, high salinity water, etc.).

[0004] Therefore, we propose a PE water supply pipe with an inner lining of a corrosion-resistant alloy layer. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a PE water supply pipe with an inner corrosion-resistant alloy lining. This solves the problem that although ordinary PE water supply pipes have good flexibility, chemical resistance, and ease of construction, their corrosion resistance is still limited when transporting media containing corrosive substances (such as acid and alkali solutions, high-salinity water, etc.).

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a PE water supply pipe with a corrosion-resistant alloy lining, comprising a PE main structural layer, a corrosion-resistant alloy inner lining, a reinforcing layer, and an outer protective layer, wherein the corrosion-resistant alloy inner lining is disposed on the inner side of the PE main structural layer, the reinforcing layer is disposed on the outer side of the PE main structural layer, and the outer protective layer is disposed on the outer side of the reinforcing layer.

[0009] The reinforcing layer includes a pressure-resistant buffer layer and a toughening layer. The pressure-resistant buffer layer is disposed on the outside of the PE main structural layer, and the toughening layer is disposed between the pressure-resistant buffer layer and the outer protective layer.

[0010] By adopting the above technical solutions, the corrosion-resistant alloy inner lining mainly plays the role of resisting media corrosion, preventing corrosive components in the transported media from eroding the pipeline, ensuring that the water quality is not polluted, and extending the service life of the pipeline. The reinforcing layer can enhance the pressure buffer performance and bending toughness of the PE water supply pipe, making the PE water supply pipe more stable and less prone to damage when under pressure.

[0011] Preferably, the PE main structural layer is made of high-density polyethylene.

[0012] By adopting the above technical solutions, the PE main structural layer can withstand high working pressure while possessing good wear resistance, impact resistance, and environmental stress cracking resistance. The PE main structural layer is the main load-bearing part of the pipeline, bearing the pressure of the transported medium and external loads, such as soil pressure and ground traffic loads.

[0013] Preferably, the corrosion-resistant alloy liner is made of 2205 duplex stainless steel.

[0014] By adopting the above technical solutions, 2205 duplex stainless steel has high strength, good toughness, and excellent resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking. It is suitable for corrosive environments. The corrosion-resistant alloy lining mainly plays the role of resisting media corrosion, preventing corrosive components in the transported media from eroding the pipeline, ensuring that the water quality is not polluted, and extending the service life of the pipeline.

[0015] Preferably, a transition bonding layer is provided between the corrosion-resistant alloy liner and the PE main structural layer, and the transition bonding layer is made of EEA adhesive.

[0016] By adopting the above technical solution, a strong bond can be formed between the corrosion-resistant alloy lining layer and the PE main structural layer, ensuring that the two layers of materials will not separate during use, thereby improving the overall structural stability and reliability of the pipeline.

[0017] Preferably, the compression-resistant buffer layer includes a nitrile rubber layer and a polyurethane foam layer disposed on the outside of the nitrile rubber layer.

[0018] By adopting the above technical solutions, the stress generated by the pipeline when subjected to external compression or impact can be effectively dispersed, the direct effect of external pressure on the internal structure of the pipeline can be alleviated, and the risk of deformation and rupture of the pipeline due to uneven stress can be reduced.

[0019] Preferably, the toughening layer is a blended woven mesh of carbon fiber and aramid fiber.

[0020] By adopting the above technical solutions, the overall toughness of PE water supply pipes can be enhanced, enabling the pipes to better resist deformation and cracking when subjected to external impacts, temperature changes, or uneven foundation settlement.

[0021] Preferably, the outer protective layer is made of carbon black modified PE.

[0022] By adopting the above technical solutions, the UV resistance and mechanical wear resistance of PE water supply pipes can be enhanced.

[0023] (III) Beneficial Effects

[0024] Compared with the prior art, the present invention provides a method with the following beneficial effects:

[0025] 1. This utility model incorporates a corrosion-resistant alloy lining layer. 2205 duplex stainless steel has high strength, good toughness, and excellent resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking, making it suitable for corrosive environments. The corrosion-resistant alloy lining layer mainly plays a role in resisting media corrosion, preventing corrosive components in the transported media from eroding the pipeline, ensuring that the water quality is not polluted, and extending the service life of the pipeline.

[0026] 2. By setting up a reinforcing layer and a pressure-resistant buffer layer, this utility model can effectively disperse the stress generated by the pipeline when it is subjected to external extrusion or impact, alleviate the direct effect of external pressure on the internal structure of the pipeline, and reduce the risk of deformation and cracking of the pipeline due to uneven stress. The toughening layer can enhance the overall toughness of the PE water supply pipe, so that the pipeline can better resist deformation and cracking when it is affected by external impact, temperature changes or uneven settlement of the foundation. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the reinforcing layer of this utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the pressure-resistant buffer layer of this utility model;

[0030] Figure 4 This is a schematic diagram of the toughening layer of this utility model.

[0031] In the picture:

[0032] 1. PE main structural layer;

[0033] 2. Corrosion-resistant alloy inner lining;

[0034] 3. Reinforcing layer; 31. Compression buffer layer; 311. Nitrile rubber layer; 312. Polyurethane foam layer; 32. Toughening layer; 321. Carbon fiber; 322. Aramid fiber;

[0035] 4. Outer protective layer;

[0036] 5. Transition adhesive layer. Detailed Implementation

[0037] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0038] This utility model provides a technical solution:

[0039] Please see Figures 1-4 The PE water supply pipe with an inner corrosion-resistant alloy lining includes a PE main structural layer 1, a corrosion-resistant alloy inner lining layer 2, a reinforcing layer 3, and an outer protective layer 4. The PE main structural layer 1 is made of high-density polyethylene. The use of high-density polyethylene allows the PE main structural layer 1 to withstand high working pressures while possessing excellent wear resistance, impact resistance, and resistance to environmental stress cracking. The PE main structural layer 1 is the main load-bearing part of the pipeline, bearing the pressure of the transported medium and external loads such as soil pressure and ground traffic loads. Its good flexibility and impact resistance make the pipeline easy to install and lay during construction, adaptable to different terrain conditions, and effectively resist damage from external environmental factors during use.

[0040] The corrosion-resistant alloy liner 2 is installed inside the PE main structural layer 1. The corrosion-resistant alloy liner 2 is made of 2205 duplex stainless steel. By incorporating the corrosion-resistant alloy liner 2, the 2205 duplex stainless steel, with its high strength, good toughness, and excellent resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking, is suitable for corrosive environments. The corrosion-resistant alloy liner 2 primarily resists media corrosion, preventing corrosive components in the transported medium from eroding the pipeline, ensuring water quality is not polluted, and extending the pipeline's service life. In water supply projects in some chemical industrial parks or coastal areas, ordinary pipelines are easily corroded by water with high salinity or containing trace amounts of chemicals. This corrosion-resistant alloy liner 2 effectively resists such corrosion, ensuring water supply safety.

[0041] Specifically, a transition bonding layer 5 is provided between the corrosion-resistant alloy liner 2 and the PE main structure layer 1. The transition bonding layer 5 is made of EEA adhesive. By setting the transition bonding layer 5, a strong bond can be formed between the corrosion-resistant alloy liner 2 and the PE main structure layer 1, ensuring that the two layers of materials will not separate during use, thereby improving the overall structural stability and reliability of the pipeline.

[0042] The reinforcing layer 3 is set on the outside of the PE main structural layer 1. The reinforcing layer 3 includes a pressure-resistant buffer layer 31 and a toughening layer 32. The pressure-resistant buffer layer 31 is set on the outside of the PE main structural layer 1, and the toughening layer 32 is set between the pressure-resistant buffer layer 31 and the outer protective layer 4. By setting the reinforcing layer 3, the pressure-resistant buffer performance and bending toughness of the PE water supply pipe can be enhanced, making the PE water supply pipe more stable and less prone to damage when subjected to pressure.

[0043] Specifically, the pressure-resistant buffer layer 31 includes a nitrile rubber layer 311 and a polyurethane foam layer 312 disposed on the outside of the nitrile rubber layer 311. By setting the pressure-resistant buffer layer 31, the stress generated by the pipeline when subjected to external extrusion or impact can be effectively dispersed, the direct effect of external pressure on the internal structure of the pipeline can be alleviated, and the risk of deformation and rupture of the pipeline due to uneven stress can be reduced.

[0044] Specifically, the toughening layer 32 is a blended woven mesh of carbon fiber 321 and aramid fiber 322. By setting the toughening layer 32, the overall toughness of the PE water supply pipe can be enhanced, so that the pipe can better resist deformation and cracking when it is affected by external impact, temperature change or uneven settlement of the foundation.

[0045] The outer protective layer 4 is set outside the reinforcing layer 3. The outer protective layer 4 is made of carbon black modified PE. By setting the outer protective layer 4, the UV resistance and mechanical wear resistance of the PE water supply pipe can be enhanced.

[0046] In practical use, the working principle of this utility model is as follows:

[0047] Firstly, by using high-density polyethylene, the PE main structural layer 1 can withstand high working pressure while possessing excellent wear resistance, impact resistance, and environmental stress cracking resistance. The PE main structural layer 1 is the main load-bearing part of the pipeline, bearing the pressure of the transported medium and external loads such as soil pressure and ground traffic loads. Its good flexibility and impact resistance make the pipeline easy to install and lay during construction, adaptable to different terrain conditions, and effectively resistant to damage from external environmental factors during use.

[0048] By incorporating a corrosion-resistant alloy liner 2, 2205 duplex stainless steel, with its high strength, good toughness, and excellent resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking, is suitable for corrosive environments. The corrosion-resistant alloy liner 2 primarily resists corrosion from the transported medium, preventing corrosive components from eroding the pipeline, ensuring water quality remains unpolluted, and extending the pipeline's service life. In water supply projects in some chemical industrial parks or coastal areas, ordinary pipelines are easily corroded by water with high salinity or containing trace amounts of chemicals; this corrosion-resistant alloy liner 2 effectively resists such corrosion, ensuring water supply safety.

[0049] By setting the reinforcing layer 3, the pressure-resistant buffer layer 31 can effectively disperse the stress generated by the pipeline when it is subjected to external extrusion or impact, alleviate the direct effect of external pressure on the internal structure of the pipeline, and reduce the risk of deformation and rupture of the pipeline due to uneven stress. The toughening layer 32 can enhance the overall toughness of the PE water supply pipe, so that the pipeline can better resist deformation and cracking when it is affected by external impact, temperature changes or uneven settlement of the foundation.

[0050] By setting an outer protective layer 4, the PE water supply pipe's resistance to ultraviolet radiation and mechanical wear can be enhanced.

[0051] In summary, this PE water supply pipe with a corrosion-resistant alloy lining utilizes the 2205 duplex stainless steel lining layer 2. This lining layer possesses high strength, good toughness, and excellent resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking, making it suitable for corrosive environments. The corrosion-resistant alloy lining layer 2 primarily resists media corrosion, preventing corrosive components in the transported medium from eroding the pipe and ensuring water quality remains unpolluted, while also extending the pipe's service life. In water supply projects in some chemical industrial parks or coastal areas, ordinary pipes are easily corroded by water with high salinity or containing trace amounts of chemicals. This corrosion-resistant alloy lining layer 2 effectively resists such corrosion, ensuring water supply safety.

[0052] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. PE water supply pipe lined with a corrosion-resistant alloy layer, comprising a PE main structure layer (1), a corrosion-resistant alloy lining layer (2), a reinforcing layer (3) and an outer protective layer (4), characterized in that: The corrosion-resistant alloy inner lining (2) is disposed on the inner side of the PE main structure layer (1), the reinforcing layer (3) is disposed on the outer side of the PE main structure layer (1), and the outer protective layer (4) is disposed on the outer side of the reinforcing layer (3). The reinforcing layer (3) includes a pressure-resistant buffer layer (31) and a toughening layer (32). The pressure-resistant buffer layer (31) is disposed on the outside of the PE main structure layer (1), and the toughening layer (32) is disposed between the pressure-resistant buffer layer (31) and the outer protective layer (4).

2. The PE potable water pipe lined with a corrosion resistant alloy layer according to claim 1, characterized in that: The PE main structural layer (1) is made of high-density polyethylene.

3. The PE potable water pipe lined with a corrosion resistant alloy layer according to claim 1, characterized in that: The corrosion-resistant alloy liner (2) is made of 2205 duplex stainless steel.

4. The PE potable water pipe lined with a corrosion resistant alloy layer according to claim 1, characterized in that: A transition bonding layer (5) is provided between the corrosion-resistant alloy liner (2) and the PE main structure layer (1), and the transition bonding layer (5) is made of EEA adhesive.

5. The PE potable water pipe lined with a corrosion resistant alloy layer as claimed in claim 1, wherein: The pressure-resistant buffer layer (31) includes a nitrile rubber layer (311) and a polyurethane foam layer (312) disposed on the outside of the nitrile rubber layer (311).

6. The PE water supply pipe with an inner corrosion-resistant alloy lining according to claim 1, characterized in that: The toughening layer (32) is a blended woven mesh of carbon fiber (321) and aramid fiber (322).

7. The PE water supply pipe with an inner corrosion-resistant alloy layer according to claim 1, characterized in that: The outer protective layer (4) is made of carbon black modified PE.

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