Anti-aging antibacterial PE pipe

Abstract

The utility model discloses an anti-aging antibacterial PE (polyethylene) pipe, which relates to the technical field of high polymer materials and comprises a first PE pipe inner layer, a middle anti-aging layer is arranged on the outer surface of the first PE pipe inner layer, and a telescopic compensation component is mounted in the middle anti-aging layer; the telescopic compensation assembly comprises a fixing groove formed in the middle anti-aging layer, a corrugated rubber sleeve is installed in the fixing groove, and one end of the corrugated rubber sleeve is connected to one side of the middle anti-aging layer. The other end of the corrugated rubber sleeve is connected with a nested inner pipe, and a second PE pipe inner layer is installed on the inner side of the nested inner pipe. The expansion compensation assembly is arranged in the middle anti-aging layer, so that the problem that a traditional PE pipe is prone to cracking, leakage, even breakage and the like due to expansion deformation when facing complex working conditions such as large temperature difference in different seasons, unstable geological conditions and frequent pressure change in pipeline operation can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to high polymer material technical field, concretely is a kind of anti-aging antibacterial PE pipe. BACKGROUND

[0002] A kind of anti-aging antibacterial PE pipe is a kind of pipe material made by adding auxiliary agent with polyethylene as base material.Polyethylene is a thermoplastic plastic polymerized from ethylene monomer, with good flexibility, corrosion resistance and processing performance, anti-aging antibacterial PE pipe can effectively delay the aging process of pipe material due to light, heat and oxygen and other factors, and the pipe also has the function of inhibiting or killing microorganisms.

[0003] Patent document CN218935536U discloses an anti-aging, antibacterial PE pipe, which mainly considers how to kill bacteria and avoid bacterial growth on the inner wall of the pipe, without considering the problem that traditional PE pipes are prone to cracking, leakage and even breaking due to expansion and deformation when facing complex working conditions such as large temperature difference in different seasons, unstable geological conditions and frequent pressure changes during pipeline operation. UTILITY MODEL CONTENT

[0004] The utility model aims to provide an anti-aging antibacterial PE pipe to solve the problem of cracking, leakage and even breaking of traditional PE pipes due to expansion and deformation when facing complex working conditions such as large temperature difference in different seasons, unstable geological conditions and frequent pressure changes during pipeline operation.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: an anti-aging antibacterial PE pipe, comprising a first PE pipe inner layer, an intermediate anti-aging layer is provided on the outer surface of the first PE pipe inner layer, a telescopic compensation assembly is installed inside the intermediate anti-aging layer, and the telescopic compensation assembly is used to compensate the expansion and deformation in length direction of the anti-aging antibacterial PE pipe due to temperature change, foundation settlement or internal pressure fluctuation of pipeline system.

[0006] The telescopic compensation assembly comprises a fixed groove opened inside the intermediate anti-aging layer, a corrugated rubber sleeve is installed inside the fixed groove, and one end of the corrugated rubber sleeve is connected to one side of the intermediate anti-aging layer.

[0007] The other end of the corrugated rubber sleeve is connected with a nested inner tube, and a second PE pipe inner layer is installed on the inner side of the nested inner tube.

[0008] Preferably, the outer surface of the intermediate anti-aging layer is provided with an outer protective layer, and the outer surface of the outer protective layer is provided with a hemispherical protrusion.

[0009] Preferably, the inner side of the first PE pipe inner layer and the second PE pipe inner layer is coated with a nano-titanium dioxide photocatalytic antibacterial coating, the inner side of the nano-titanium dioxide photocatalytic antibacterial coating is coated with a graphene enhanced anti-aging coating, and the inner side of the graphene enhanced anti-aging coating is coated with a super-hydrophobic coating.

[0010] Preferably, the inner side of the first PE pipe inner layer and the second PE pipe inner layer is coated with a nano-titanium dioxide photocatalytic antibacterial coating, the inner side of the nano-titanium dioxide photocatalytic antibacterial coating is coated with a graphene enhanced anti-aging coating, and the inner side of the graphene enhanced anti-aging coating is coated with a super-hydrophobic coating.

[0011] Preferably, the inner side of the first PE pipe inner layer and the second PE pipe inner layer is coated with a nano-titanium dioxide photocatalytic antibacterial coating, the inner side of the nano-titanium dioxide photocatalytic antibacterial coating is coated with a graphene enhanced anti-aging coating, and the inner side of the graphene enhanced anti-aging coating is coated with a super-hydrophobic coating.

[0012] Preferably, the inner side of the first PE pipe inner layer and the second PE pipe inner layer is coated with a nano-titanium dioxide photocatalytic antibacterial coating, the inner side of the nano-titanium dioxide photocatalytic antibacterial coating is coated with a graphene enhanced anti-aging coating, and the inner side of the graphene enhanced anti-aging coating is coated with a super-hydrophobic coating.

[0013] Preferably, the inner side of the first PE pipe inner layer and the second PE pipe inner layer is coated with a nano-titanium dioxide photocatalytic antibacterial coating, the inner side of the nano-titanium dioxide photocatalytic antibacterial coating is coated with a graphene enhanced anti-aging coating, and the inner side of the graphene enhanced anti-aging coating is coated with a super-hydrophobic coating.

[0014] Compared with the prior art, the utility model has the advantages of:

[0015] 1、the utility model discloses a telescopic compensation assembly is arranged in the intermediate anti -aging layer, and the corrugated rubber sleeve in the component has good telescopic elasticity by virtue of its unique corrugated structure, can effectively buffer the telescopic stress of the length direction of the pipe when the pipe encounters temperature change, for example, under the condition of high temperature baking in hot summer or low temperature invasion in cold winter, when the ground base appears settlement, the corrugated rubber sleeve and the nested inner tube cooperate with each other, and the form of the corrugated rubber sleeve can be adaptively adjusted, so that the pipe is prevented from being damaged, such as being broken, due to uneven stress.

[0016] 2, the utility model discloses a first PE tubular material inner layer and second PE tubular material inner layer inboard are coated with nanometer titanium dioxide photocatalysis antibacterial coating, graphene reinforced anti-aging coating and superhydrophobic coating in proper order, nanometer titanium dioxide photocatalysis antibacterial coating utilizes its photocatalytic property, can efficiently decompose the microorganism such as bacteria attached on the inner wall of tubular material under daily light condition, greatly inhibits the bacterial breeding, effectively guarantees the medium transported through tubular material not to be contaminated, especially in such as drinking water transportation, food processing industry material transportation and other application scenes of extremely high health requirement, the advantage is obvious, graphene reinforced anti-aging coating is endowed with the excellent mechanical property and chemical stability of graphene, significantly enhances the anti-aging ability of tubular material, makes it be able to resist the erosion of ultraviolet, chemical substance and other external factors for a long time, delays the aging process of tubular material, superhydrophobic coating is endowed with the superhydrophobicity of tubular material surface, makes dirt, scale and the like difficult to attach on the inner wall of tubular material, not only maintains the good appearance of tubular material, more importantly, reduces the bacterial breeding possibly caused by dirt accumulation and the negative influence on the performance of tubular material.Compared with the prior art, the synergistic effect of this multilayer functional coating improves the comprehensive performance and service life of tubular material in all directions, can properly solve a series of problems such as poor antibacterial property of ordinary PE tubular material, easily affecting the use safety due to bacterial breeding, insufficient anti-aging ability leading to premature aging failure of tubular material and surface easy to stain various dirt, affecting the conveying efficiency and health condition, widens the application range of PE tubular material, makes it reliably applied in more fields of strict quality requirements for tubular material. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic diagram of the utility model;

[0018] Figure 2 It is the cross section structure schematic diagram of the utility model;

[0019] Figure 3 It is the telescopic compensation subassembly structure schematic diagram of the utility model;

[0020] Figure 4 It is the side structure schematic diagram of the utility model;

[0021] Figure 5 It is the spiral steel wire and elastic rubber structure schematic diagram of the utility model.

[0022] In the drawing: 1, first PE tubular material inner layer;2, intermediate anti-aging layer;3, corrugated rubber sleeve;4, nested inner tube;5, second PE tubular material inner layer;6, outer protective layer;7, hemispherical convex;8, nanometer titanium dioxide photocatalysis antibacterial coating;9, graphene reinforced anti-aging coating;10, superhydrophobic coating;11, spiral steel wire;12, elastic rubber. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0024] In the description of the present application, it should be noted that, unless explicitly defined and limited, the terms "mounting", "connection" and "connecting" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] Please refer to Figure 1 、 Figure 2 and Figure 3 , the present application provides an embodiment: an anti-aging antibacterial PE pipe material, comprising a first PE pipe material inner layer 1, the outer surface of the first PE pipe material inner layer 1 is provided with an intermediate anti-aging layer 2, the inside of the intermediate anti-aging layer 2 is installed with a telescopic compensation assembly, the telescopic compensation assembly is used for compensating the telescopic deformation of the anti-aging antibacterial PE pipe material in the length direction due to temperature change, foundation settlement or internal pressure fluctuation of pipeline system;

[0026] The telescopic compensation assembly comprises a fixed groove opened in the inside of the intermediate anti-aging layer 2, the inside of the fixed groove is installed with a corrugated rubber sleeve 3, and one end of the corrugated rubber sleeve 3 is connected to one side of the intermediate anti-aging layer 2.

[0027] The other end of the corrugated rubber sleeve 3 is connected with a nested inner tube 4, and the inner side of the nested inner tube 4 is installed with a second PE pipe material inner layer 5.

[0028] Further, the outer surface of the first PE pipe inner layer 1 is provided with an intermediate anti-aging layer 2, and the corrugated rubber sleeve 3 in the expansion compensation assembly is installed in the fixed groove of the intermediate anti-aging layer 2, one end of which is connected to one side of the intermediate anti-aging layer 2, and the other end is connected to the nested inner pipe 4. The corrugated structure of the corrugated rubber sleeve 3 gives it good expansion elasticity. When the temperature changes, whether it is thermal expansion or cold contraction, it can absorb or release the stress generated in the length direction of the pipe through its own deformation. For example, in a high temperature environment, the pipe tends to elongate, and the corrugated rubber sleeve 3 will be stretched, and its corrugated structure can uniformly disperse the stress to prevent local stress concentration from causing pipe rupture; at low temperature, it can be contracted without affecting the overall structure. When the ground subsides, the pipes in different parts will be pulled or pressed in different directions and degrees, and the corrugated rubber sleeve 3 cooperates with the nested inner pipe 4 to flexibly adjust the relative position and shape to adapt to the complex stress changes and avoid pipe rupture or interface loosening caused by ground subsidence. For internal pressure fluctuations in the pipeline system, when the pressure suddenly increases, the pipe tends to expand outward, and the corrugated rubber sleeve 3 can buffer this expansion force to a certain extent to ensure the stability of the pipe structure; when the pressure decreases, it can prevent the pipe from excessive contraction deformation.

[0029] The nested inner pipe 4 cooperates with the corrugated rubber sleeve 3, and the second PE pipe inner layer 5 on the inner side of the nested inner pipe 4 further enhances the overall strength and stability of the pipe. At the same time, the two PE pipe inner layers and the intermediate anti-aging layer 2 jointly build a stable pipe body structure framework, so that the pipe can not only have good expansion compensation ability, but also can ensure effective containment and transportation of the conveying medium, and ensure that the entire pipeline system can safely, stably and efficiently operate under various complex working conditions.

[0030] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , an embodiment provided by the utility model: an anti-aging and antibacterial PE pipe, the outer surface of the intermediate anti-aging layer 2 is provided with an outer protective layer 6, and the outer surface of the outer protective layer 6 is provided with a hemispherical convex 7.

[0031] The inner part of the outer protective layer 6 is provided with a reinforcing rib.

[0032] Further, the outer protective layer 6 plays a protective role, and the hemispherical protrusions 7 on the outer surface of the outer protective layer 6 have multiple functions. From the perspective of physical protection, these hemispherical protrusions 7 can effectively disperse the impact force applied to the surface of the pipe from the outside. When the pipe is accidentally collided or extruded by external objects, the hemispherical protrusions 7 can evenly disperse the impact force to a larger area, avoiding excessive local stress that can cause damage or even rupture of the pipe surface. For example, during the transportation of the pipe, even if it accidentally collides with other hard objects, the hemispherical protrusions 7 can act as a buffer to reduce the risk of damage. From the perspective of corrosion prevention, the hemispherical protrusions 7 increase the contact area between the outer surface of the pipe and the external environment, making it difficult for some corrosive substances to adhere and penetrate the pipe surface for a long time, reducing the erosion probability of the pipe by corrosive media, and helping to extend the service life of the pipe in harsh environments.

[0033] The reinforcing ribs arranged inside the outer protective layer 6 significantly improve the overall strength and rigidity of the pipe. The reinforcing ribs can effectively resist deformation of the pipe under stress conditions such as bending, stretching, and extrusion. In the scenario of laying underground pipes, when the pipe is subjected to the weight of the soil above and possible dynamic loads such as vehicle driving, the reinforcing ribs can ensure that the pipe does not easily collapse or bend, maintaining the smoothness and structural integrity of the pipeline. When the pipeline system is subjected to high-pressure water flow, the reinforcing ribs can also enhance the pressure-bearing capacity of the pipe wall, preventing the pipe wall from bulging or rupturing due to excessive pressure. At the same time, the reinforcing ribs are closely combined with the outer protective layer 6, the intermediate anti-aging layer 2 inside, and the PE pipe inner layer, forming an organic whole structure, making the synergistic effect between the layers more stable, and further improving the ability of the pipe to resist the influence of complex environmental factors from the outside.

[0034] Please refer to Figure 3 , Figure 4 and Figure 5 , the utility model provides an embodiment: an anti-aging antibacterial PE pipe, the inner side of first PE pipe inner layer 1 and second PE pipe inner layer 5 is coated with nanometer titanium dioxide photocatalytic antibacterial coating 8, the inner side of nanometer titanium dioxide photocatalytic antibacterial coating 8 is coated with graphene reinforced anti-aging coating 9, the inner side of graphene reinforced anti-aging coating 9 is coated with superhydrophobic coating 10.

[0035] Further, the first nano-titanium dioxide photocatalytic antibacterial coating 8 is coated on the inner side of the first PE pipe inner layer 1 and the second PE pipe inner layer 5. Nano-titanium dioxide has unique photocatalytic properties. Under the irradiation of visible light or ultraviolet light, it can generate free radicals with strong oxidizing properties, such as hydroxyl radicals, etc. These free radicals can effectively destroy the cell wall, cell membrane and internal biological macromolecules such as nucleic acids and proteins of microorganisms such as bacteria, viruses, etc., thereby achieving high-efficiency antibacterial and disinfecting functions. Whether it is common harmful bacteria such as Escherichia coli and Staphylococcus aureus, or various pathogenic microorganisms that may exist in water, they can be rapidly inactivated after contacting the coating under light conditions.

[0036] The graphene reinforced anti-aging coating 9 on the inner side of the nano-titanium dioxide photocatalytic antibacterial coating 8 plays a key role in anti-aging. Graphene has excellent mechanical properties, chemical stability and thermal stability. Its strong antioxidant capacity can effectively block the erosion of oxidizing substances such as oxygen and ozone in the external environment to the pipe, delaying the aging process of the pipe. At the same time, the high modulus characteristics of graphene can enhance the strength and toughness of the coating. When the pipe produces slight deformation due to temperature changes, internal pressure fluctuations or external mechanical stress, the coating can maintain its integrity and prevent cracks or peeling, thereby prolonging the overall service life of the pipe and ensuring that the pipe can continuously and stably perform its conveying function during long-term use, reducing the cost and resource waste caused by frequent replacement of the pipe due to aging.

[0037] The super-hydrophobic coating 10 on the innermost side of the pipe endows the pipe inner wall with super-hydrophobicity, making it difficult for water or other liquids to adhere to the inner wall of the pipe and form water droplets that quickly slide off. Not only can it reduce the residue of liquids on the pipe wall, reduce the possibility of bacterial growth and dirt accumulation caused by liquid residue, and maintain the cleanliness of the pipe wall, but in some special application scenarios, such as conveying pipes containing viscous substances or easily crystallizing substances, the super-hydrophobic coating 10 can effectively prevent the adhesion and crystallization of these substances on the pipe wall, avoiding pipe blockage and ensuring the smoothness of the pipe system, further improving the practicality and reliability of the pipe, making it able to adapt to more complex and diverse conveying task requirements.

[0038] Please refer to FIGS. Figure 2 , Figure 3 and Figure 5 An embodiment of the utility model provides an anti-aging and antibacterial PE pipe, the inside of intermediate anti-aging layer 2 is provided with spiral steel wire 11, and the surface of spiral steel wire 11 is wrapped with elastic rubber 12.

[0039] The spiral steel wire 11 is arranged in a double helix staggered structure in the intermediate anti-aging layer 2, and adjacent spiral steel wires 11 are connected by elastic connecting pieces, and the elastic connecting pieces are rubber strips with high elastic modulus.

[0040] Further, the helical steel wires 11 themselves have very high strength and rigidity, and are arranged in a double helix staggered structure within the intermediate anti-aging layer 2. This unique arrangement allows the pipe to obtain balanced support in all directions. When the pipe is subjected to external extrusion or bending forces, the helical steel wires 11 can effectively resist deformation. For example, when the underground pipe is pressed by heavy objects above or subjected to lateral forces at a pipe bend, the helical steel wires 11 act like a skeleton to maintain the basic shape of the pipe, preventing excessive collapse or distortion of the pipe, ensuring the smoothness and structural integrity of the pipe interior, and ensuring the normal and stable transportation of fluids.

[0041] The elastic rubber 12 wrapped on the surface of the helical steel wires 11 plays an important role in buffering and protection. On the one hand, the elastic rubber 12 can isolate the helical steel wires 11 from other materials within the intermediate anti-aging layer 2, avoiding possible electrochemical corrosion caused by direct contact between metal and polymer materials, prolonging the service life of the helical steel wires 11, and thus ensuring the stability and durability of the entire pipe structure. On the other hand, when the pipe is subjected to small impact forces or vibrations, the elastic rubber 12 can absorb and disperse these energies through its elastic deformation, reducing the impact on the overall structure of the pipe and reducing the risk of material fatigue and structural damage caused by frequent vibrations.

[0042] The adjacent helical steel wires 11 are connected by rubber strips with high elastic modulus as elastic connectors, which further improves the synergy of the entire structure. The rubber strips with high elastic modulus can not only ensure a certain elastic deformation capacity, but also transmit stress between adjacent helical steel wires 11, so that each helical steel wire 11 forms an organic whole stress system. When subjected to a large external force, the stress can be quickly and evenly dispersed to other helical steel wires 11 through the rubber strips, avoiding structural damage caused by local stress concentration. This structural design allows the pipe to have high strength and deformation resistance while also having good flexibility and impact resistance, allowing it to adapt to complex installation environments and operating conditions.

[0043] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , an embodiment of the utility model provides a kind of anti-aging antibacterial PE pipe material, intermediate anti-aging layer 2 inside is also provided with annular pressure balance chamber, annular pressure balance chamber is distributed along pipe circumference direction, adjacent annular pressure balance chamber is connected by inclined micropore communication pipe, annular pressure balance chamber is separated from pipe interior space by microporous membrane, microporous membrane allows gas molecule to pass and prevents liquid and solid particles to pass, annular pressure balance chamber is used to balance the pressure generated by pressure fluctuation inside pipe.

[0044] Further, from the structural point of view, the annular pressure balance chambers are distributed along the circumference of the pipe, and their uniform layout can comprehensively perceive and respond to pressure changes at different positions inside the pipe. Adjacent annular pressure balance chambers are connected through inclined micro-hole communication pipes. This inclined design facilitates smoother gas flow between the chambers when a pressure difference exists, avoiding the impact of communication pipe blockage or poor gas flow on pressure balance. The annular pressure balance chambers are separated from the internal space of the pipe by a micro-porous membrane, which only allows gas molecules to pass through. This feature precisely limits the functional range of its pressure balance, effectively preventing the entry of liquids and solid particles into the chamber, preventing chamber contamination or blockage, and ensuring long-term stable operation.

[0045] In terms of function, when the internal pressure of the pipe fluctuates due to various reasons, such as during the startup or shutdown of the pipeline system, sudden changes in water flow speed leading to sudden pressure rise or drop, or pressure changes caused by terrain differences during long-distance transportation, the annular pressure balance chambers begin to play a key role. When the pressure rises, gas molecules inside the pipe will enter the annular pressure balance chamber through the micro-porous membrane, thereby reducing the internal pressure peak of the pipe and preventing pipe rupture due to excessive pressure. When the pressure drops, the gas molecules in the annular pressure balance chamber will also pass through the micro-porous membrane in the opposite direction to enter the pipe interior, supplementing the pressure and preventing adverse phenomena such as liquid backflow and cavitation due to low pressure. Through this dynamic pressure balance adjustment mechanism, the structure greatly improves the adaptability of the pipe to internal pressure fluctuations, ensuring stable operation of the pipeline system under various complex conditions.

[0046] Working principle: When the anti-aging and antibacterial PE pipe undergoes expansion and deformation due to temperature changes, such as temperature rise, the pipe tends to elongate. At this time, the corrugated rubber sleeve 3, with one end connected to the intermediate anti-aging layer 2 and the other end connected to the nested inner pipe 4, will be stretched along with the elongation of the pipe. The corrugated structure of the corrugated rubber sleeve 3 can effectively absorb the stress generated by the elongation of the pipe during stretching, preventing damage to the pipe caused by stress concentration. When the temperature decreases and the pipe contracts, the corrugated rubber sleeve 3 will contract accordingly, maintaining the structural stability of the pipe.

[0047] In the case of foundation settlement, different parts of the pipe are subjected to different tensile or compressive forces. The nested inner pipe 4 and the corrugated rubber sleeve 3 work together, and the corrugated rubber sleeve 3 can deform accordingly according to the non-uniform external force received by the pipe, and the nested inner pipe 4 will also adjust its position accordingly, thereby compensating for the expansion and contraction deformation of the pipe in the length direction caused by foundation settlement.

[0048] For the fluctuation of internal pressure of the pipeline system, when the pressure increases, the pipe material has a tendency to expand outward, which can cause the pipe material to stretch in the length direction. The corrugated rubber sleeve 3 can buffer this stretching by its own elastic deformation to prevent the pipe material from overstretching and being damaged; when the pressure decreases, the corrugated rubber sleeve 3 can also prevent the pipe material from over-contracting.

[0049] The hemispherical protrusions 7 on the outer surface of the outer protective layer 6 can disperse the impact force to a larger area when subjected to external impact. Because of the hemispherical structure, the external force can be evenly distributed along the curved surface, reducing the case of excessive local pressure, thereby protecting the pipe body. At the same time, the hemispherical protrusions 7 increase the contact area between the outer surface of the pipe and the external environment, making it difficult for corrosive substances to stay and penetrate on the surface of the pipe for a long time, thereby playing a certain anti-corrosion role. The reinforcing ribs inside the outer protective layer 6 can enhance the overall strength of the pipe. When the pipe is subjected to external pressure such as soil pressure and vehicle load, the reinforcing ribs can resist the deformation of the pipe and maintain the shape and structural integrity of the pipe.

[0050] The nano-titanium dioxide photocatalytic antibacterial coating 8 on the inner side of the first PE pipe inner layer 1 and the second PE pipe inner layer 5 can generate free radicals with strong oxidizing properties under light conditions. These free radicals can react with the cell wall, cell membrane and internal biological macromolecules of bacteria, viruses and other microorganisms, destroying the structure of the microorganisms, thereby achieving the purpose of antibacterial and disinfection.

[0051] The graphene reinforced anti-aging coating 9 utilizes the excellent mechanical properties and chemical stability of graphene. Graphene can block the oxidation of oxygen, ozone and other oxidation substances in the external environment, slowing down the aging process of the pipe. At the same time, its high modulus characteristics enable the coating to maintain integrity when the pipe undergoes slight deformation, preventing cracks or peeling, thereby prolonging the service life of the pipe.

[0052] The special microstructure of the super-hydrophobic coating 10 makes it difficult for liquid to adhere to the inner wall of the pipe. When the liquid comes into contact with the coating, it will form water droplets and quickly slide off, reducing the residue of the liquid on the pipe wall, thereby reducing the possibility of bacterial growth and dirt accumulation, and preventing the adhesion and crystallization of sticky or easily crystallized substances on the pipe wall, keeping the pipeline unobstructed.

[0053] The helical steel wires 11 inside the intermediate anti-aging layer 2 are arranged in a double helix staggered structure, which can provide balanced support force to the pipe in all directions. When the pipe is subjected to external pressure or bending force, the helical steel wires 11 can resist deformation and maintain the basic shape of the pipe. For example, when the underground pipeline is compressed by the weight above or subjected to lateral force at the pipe turning point, the helical steel wires 11 act as a skeleton to prevent the pipe from excessive collapse or distortion.

[0054] The elastic rubber 12 wrapped on the surface of the helical steel wire 11 can isolate the helical steel wire 11 from other materials in the middle anti-aging layer 2 to prevent electrochemical corrosion. Meanwhile, when the pipe is subjected to a small impact force or vibration, the elastic rubber 12 can absorb and disperse the energy by its elastic deformation, reducing the impact on the overall structure of the pipe.

[0055] The adjacent helical steel wires 11 are connected by the high-elasticity modulus rubber strip, and when a local part is subjected to a large external force, the stress can be quickly and uniformly dispersed to other helical steel wires 11 through the rubber strip, avoiding the structural damage caused by local stress concentration, so that the helical steel wires 11 form an organic overall stress system.

[0056] When the internal pressure of the pipe fluctuates due to various reasons such as water flow speed change and terrain height difference, if the pressure rises, the gas molecules in the pipe will pass through the microporous membrane into the annular pressure balance chamber. Because the annular pressure balance chamber is separated from the internal space of the pipe by the microporous membrane, and the microporous membrane allows gas molecules to pass through but prevents liquid and solid particles from passing through, the pressure peak in the pipe can be reduced, avoiding the pipe rupture caused by excessive pressure.

[0057] When the pressure decreases, the gas molecules in the annular pressure balance chamber will pass through the microporous membrane into the pipe in the opposite direction, supplementing the pressure, preventing adverse phenomena such as liquid backflow and cavitation caused by excessively low pressure. The adjacent annular pressure balance chambers are connected by the inclined microporous communication pipe, which is conducive to the smooth flow of gas between the chambers when there is a pressure difference, thereby achieving dynamic balance of the internal pressure of the pipe.

[0058] The apparatus embodiments described above are merely exemplary, wherein the units shown as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the embodiments. Those skilled in the art can understand and implement without creative labor.

[0059] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An anti-aging and anti-microbial PE pipe comprising a first PE pipe inner layer (1), characterized in that: The outer surface of the first PE pipe inner layer (1) is provided with an intermediate anti-aging layer (2), and a telescopic compensation assembly is mounted inside the intermediate anti-aging layer (2), which is used to compensate the telescopic deformation in the length direction of the anti-aging and antibacterial PE pipe caused by temperature changes, foundation settlement or internal pressure fluctuations of the pipeline system. The telescopic compensation assembly comprises a fixed groove opened in the inside of the intermediate anti-aging layer (2), and a corrugated rubber sleeve (3) is mounted in the inside of the fixed groove, and one end of the corrugated rubber sleeve (3) is connected to one side of the intermediate anti-aging layer (2). The other end of the corrugated rubber sleeve (3) is connected with a nested inner tube (4), and the inner side of the nested inner tube (4) is mounted with a second PE pipe inner layer (5).

2. The anti-aging and anti-microbial PE pipe according to claim 1, characterized in that: The outer surface of the intermediate anti-aging layer (2) is provided with an outer protective layer (6), and the outer surface of the outer protective layer (6) is provided with a hemispherical protrusion (7).

3. The anti-aging and anti-microbial PE pipe according to claim 1, characterized in that: The inner sides of the first PE pipe inner layer (1) and the second PE pipe inner layer (5) are coated with a nano-titanium dioxide photocatalytic antibacterial coating (8), the inner side of the nano-titanium dioxide photocatalytic antibacterial coating (8) is coated with a graphene enhanced anti-aging coating (9), and the inner side of the graphene enhanced anti-aging coating (9) is coated with a super-hydrophobic coating (10).

4. The anti-aging and anti-microbial PE pipe according to claim 1, characterized in that: The inside of the intermediate anti-aging layer (2) is provided with a spiral steel wire (11), and the surface of the spiral steel wire (11) is wrapped with an elastic rubber (12).

5. The anti-aging and anti-microbial PE pipe according to claim 4, characterized in that: The spiral steel wires (11) are arranged in a double-helix staggered structure in the intermediate anti-aging layer (2), and adjacent spiral steel wires (11) are connected by elastic connecting pieces, and the elastic connecting pieces are rubber strips with high elastic modulus.

6. The anti-aging and anti-microbial PE pipe according to claim 2, characterized in that: The inside of the outer protective layer (6) is provided with a reinforcing rib.

7. The anti-aging and anti-microbial PE pipe according to claim 1, characterized in that: The inside of the intermediate anti-aging layer (2) is also provided with an annular pressure balance chamber, which is distributed along the circumferential direction of the pipe, and adjacent annular pressure balance chambers are connected by inclined microporous communication pipes, the annular pressure balance chamber is separated from the inside space of the pipe by a microporous membrane, the microporous membrane allows gas molecules to pass through and prevents liquid and solid particles to pass through, and the annular pressure balance chamber is used to balance the pressure generated by the pressure fluctuations inside the pipe.

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