Composite drinking water plastic-coated pipeline

Abstract

The utility model discloses a composite drinking water plastic-coated pipeline which comprises a pipeline body, the pipeline body comprises an epoxy resin coating, the inner surface of the epoxy resin coating is coated with a Teflon coating, the inner surface of the Teflon coating is coated with a zinc coating, the inner surface of the zinc coating is coated with a boron nitride coating, and the inner surface of the boron nitride coating is coated with a boron nitride coating. A flange plate is arranged at the joint of the pipeline body, and a mounting bolt is arranged on the front surface of the flange plate. According to the technical scheme, the plastic-coated pipeline solves the problems that an existing plastic-coated pipeline is poor in corrosion-resistant effect, and a coating of the plastic-coated pipeline is gradually aged along with the increase of service time and the influence of environmental factors. The problem that the aging speed of the coating may be increased especially under the conditions of long-term exposure to ultraviolet rays and humid environments or frequent temperature change and the like due to the fact that the aging of the coating may crack, peel off and the like, the protection performance of the coating to the pipeline is reduced, and the corrosion resistance of the pipeline is reduced is solved.

Description

Technical Field

[0001] This utility model relates to the field of plastic-coated pipe technology, specifically a composite drinking water plastic-coated pipe. Background Technology

[0002] Plastic-coated pipes are a new type of pipe material. They are formed by fusing a layer of plastic anti-corrosion coating onto the inner and outer walls of a steel pipe, creating a steel-plastic composite structure. This structure combines the high strength of steel with the corrosion resistance of plastic, overcoming the shortcomings of steel pipes being prone to corrosion and plastic pipes having low strength. It boasts a longer design life. However, existing plastic-coated pipes do not have good corrosion resistance. With increased service life and the influence of environmental factors, the coating of the plastic-coated pipe will gradually age. The aged coating may exhibit cracking and peeling, reducing its protective performance and decreasing the pipe's corrosion resistance. This aging process may be accelerated, especially under conditions of long-term exposure to ultraviolet radiation, humid environments, or frequent temperature changes. Utility Model Content

[0003] The purpose of this invention is to provide a composite drinking water coated pipe with corrosion resistance.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a composite drinking water plastic-coated pipe, comprising a pipe body, the pipe body including an epoxy resin coating, the inner surface of the epoxy resin coating being coated with a Teflon coating, the inner surface of the Teflon coating being coated with a zinc coating, and the inner surface of the zinc coating being coated with a boron nitride coating layer.

[0005] As a preferred embodiment, a flange is provided at the connection of the pipe body, and mounting bolts are provided on the front surface of the flange.

[0006] As a preferred embodiment, the boron nitride coating layer includes a conductive copper coating layer, and the inner surface of the conductive copper coating layer is coated with a polyethylene resin layer.

[0007] As a preferred embodiment, the inner surface of the polyethylene resin layer is coated with an epoxy iron oxide red primer layer, and the inner surface of the epoxy iron oxide red primer layer is coated with red lead anti-rust paint.

[0008] As a preferred embodiment, the thickness of the epoxy iron oxide primer layer is 0.03 mm, and the thickness of the red lead anti-rust paint is 0.02 mm.

[0009] As a preferred embodiment, the zinc coating includes a chlorosulfonated polyethylene coating layer, the outer surface of which is coated with an aluminum tripolyphosphate coating layer.

[0010] As a preferred embodiment, the outer surface of the aluminum tripolyphosphate coating layer is coated with a polyurea coating layer, and the outer surface of the polyurea coating layer is coated with a fluorocarbon coating layer.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention solves the problem of poor corrosion resistance in existing plastic-coated pipes, where the coating gradually ages over time due to environmental factors. The aged coating may crack or peel, reducing its protective performance and corrosion resistance, especially under conditions of prolonged exposure to ultraviolet radiation, humidity, or frequent temperature changes, which can accelerate the aging process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the pipe body structure of this utility model;

[0015] Figure 3 This is a cross-sectional view of the boron nitride coating layer structure of this utility model;

[0016] Figure 4 This is a cross-sectional view of the zinc coating structure of this utility model.

[0017] In the diagram: 1. Pipe body; 101. Epoxy resin coating; 102. Teflon coating; 103. Zinc coating; 104. Boron nitride coating layer; 1031. Chlorosulfonated polyethylene coating layer; 1032. Aluminum tripolyphosphate coating layer; 1033. Polyurea coating layer; 1034. Fluorocarbon coating layer; 1041. Conductive copper coating layer; 1042. Polyethylene resin layer; 1043. Epoxy iron oxide primer layer; 1044. Red lead anti-rust paint. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. Example 1

[0020] Please see Figure 1 and Figure 2 As shown, this utility model provides a composite drinking water plastic-coated pipe, including a pipe body 1, the pipe body 1 including an epoxy resin coating 101, the inner surface of the epoxy resin coating 101 being coated with a Teflon coating 102, the inner surface of the Teflon coating 102 being coated with a zinc coating 103, and the inner surface of the zinc coating 103 being coated with a boron nitride coating layer 104.

[0021] This technical solution addresses the problem of poor corrosion resistance in existing plastic-coated pipes, where the coating gradually ages over time due to environmental factors. Aging coatings may crack and peel, reducing their protective performance and corrosion resistance, especially under conditions of prolonged exposure to ultraviolet radiation, humidity, or frequent temperature changes, which can accelerate the aging process. Example 2

[0022] Based on Embodiment 1, this utility model is as follows: Figure 3 and Figure 4 As shown, a flange is provided at the connection of the pipe body 1, and mounting bolts are provided on the front surface of the flange. The boron nitride coating layer 104 includes a conductive copper coating layer 1041, the inner surface of the conductive copper coating layer 1041 is coated with a polyethylene resin layer 1042, the inner surface of the polyethylene resin layer 1042 is coated with an epoxy iron oxide red primer layer 1043, the inner surface of the epoxy iron oxide red primer layer 1043 is coated with red lead anti-rust paint 1044, the thickness of the epoxy iron oxide red primer layer 1043 is 0.03 mm, and the thickness of the red lead anti-rust paint 1044 is 0.02 mm. The zinc coating 103 includes a chlorosulfonated polyethylene coating layer 1031, the outer surface of the chlorosulfonated polyethylene coating layer 1031 is coated with an aluminum tripolyphosphate coating layer 1032, the outer surface of the aluminum tripolyphosphate coating layer 1032 is coated with a polyurea coating layer 1033, and the outer surface of the polyurea coating layer 1033 is coated with a fluorocarbon coating layer 1034.

[0023] The above technical solution, through the setting of chlorosulfonated polyethylene coating layer 1031, has the advantages of good ozone resistance, chemical corrosion resistance, oil resistance, heat resistance, light resistance and wear resistance. Through the setting of aluminum tripolyphosphate coating layer 1032, it has the advantages of wide applicability, water insolubility, non-toxicity and good thermal stability, and also has the effects of rust prevention, corrosion prevention and flame retardancy. Through the setting of conductive copper coating layer 1041, it has the characteristics of hardness, wear resistance, water resistance, moisture resistance, chemical corrosion resistance, insulation and fast drying. Through the setting of polyethylene resin layer 1042, it has the advantages of isolation protection, corrosion prevention, elimination of static electricity and magnetic field shielding.

[0024] The working principle of this utility model is as follows: The epoxy resin coating 101 provides excellent resistance to acids, alkalis, salts, and other chemicals, maintaining stability in various chemical corrosion environments. It is not easily dissolved, corroded, or degraded by chemicals, and is widely used for the protection of equipment and pipelines in industries such as chemical and steel. The Teflon coating 102 provides excellent resistance to most chemicals, including strong acids, strong alkalis, salts, and organic solvents, and reacts almost no with any chemicals, allowing it to be used in extreme chemical corrosion environments. The zinc coating 103 ensures that zinc is preferentially corroded in corrosive environments, thus protecting the underlying metal substrate and acting as a sacrificial anode for cathodic protection, extending the service life of the metal. The boron nitride coating layer 104 provides advantages such as high strength, good elasticity, wear resistance, corrosion resistance, electrical insulation, heat insulation, and antistatic properties.

[0025] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0026] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A composite drinking water coated pipe, comprising a pipe body (1), characterized in that: The pipe body (1) includes an epoxy resin coating (101), the inner surface of the epoxy resin coating (101) is coated with a Teflon coating (102), the inner surface of the Teflon coating (102) is coated with a zinc coating (103), and the inner surface of the zinc coating (103) is coated with a boron nitride coating layer (104).

2. The composite drinking water coated pipe according to claim 1, characterized in that: The connection of the pipe body (1) is provided with a flange, and the front surface of the flange is provided with mounting bolts.

3. The composite drinking water coated pipe according to claim 1, characterized in that: The boron nitride coating layer (104) includes a conductive copper coating layer (1041), and the inner surface of the conductive copper coating layer (1041) is coated with a polyethylene resin layer (1042).

4. A composite drinking water coated pipe according to claim 3, characterized in that: The inner surface of the polyethylene resin layer (1042) is coated with an epoxy iron oxide red primer layer (1043), and the inner surface of the epoxy iron oxide red primer layer (1043) is coated with red lead anti-rust paint (1044).

5. A composite drinking water coated pipe according to claim 4, characterized in that: The thickness of the epoxy iron oxide primer layer (1043) is 0.03 mm, and the thickness of the red lead anti-rust paint (1044) is 0.02 mm.

6. A composite drinking water coated pipe according to claim 1, characterized in that: The zinc coating (103) includes a chlorosulfonated polyethylene coating layer (1031), and the outer surface of the chlorosulfonated polyethylene coating layer (1031) is coated with an aluminum tripolyphosphate coating layer (1032).

7. A composite drinking water coated pipe according to claim 6, characterized in that: The outer surface of the aluminum tripolyphosphate coating layer (1032) is coated with a polyurea coating layer (1033), and the outer surface of the polyurea coating layer (1033) is coated with a fluorocarbon coating layer (1034).

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