Anti-corrosion coating structure in pipeline

Abstract

The utility model relates to the technical field of coating structures, and discloses an anti-corrosion coating structure in a pipeline, which comprises a connecting pipeline, a temperature-resistant layer is fixedly connected in the connecting pipeline, an anti-rust layer is fixedly connected on the inner wall of the temperature-resistant layer, a wear-resistant layer is fixedly connected on the inner wall of the anti-rust layer, and the wear-resistant layer is fixedly connected on the inner wall of the anti-rust layer. Sealing assemblies are arranged on the front side and the rear side of the connecting pipeline, the sealing assemblies are used for providing a sealing effect, each sealing assembly comprises a drainage layer, each drainage layer is fixedly connected to one side of the interior of the connecting pipeline, and one side of each drainage layer is fixedly connected with an insulating layer; and one side, far away from the hydrophobic layer, of the insulating layer is fixedly connected with an oxygen barrier layer. According to the utility model, the temperature-resistant layer, the wear-resistant layer and the anti-rust layer are arranged in the pipeline, so that the pipeline can be prevented from rusting, the pipeline can be effectively prevented from being corroded, and the insulating layer, the oxygen barrier layer and the water delivery layer are arranged at the end parts of the pipeline, so that the pipelines have good sealing and corrosion-resistant capabilities when being connected with each other.

Description

Technical Field

[0001] The utility model relates to the technical field of coating structures, in particular to an anti-corrosion coating structure inside a pipeline. Background Art

[0002] Pipelines are devices used to transport gases, liquids, or fluids containing solid particles. Pipelines are widely used, primarily in water supply, drainage, heating, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, water conservancy projects, and various industrial installations.

[0003] During use, pipelines in the prior art, especially those transporting oil and gas, are mostly located in complex soil environments. The pipelines are easily corroded and deteriorated by the chemical and electrochemical effects of internal and external media or by the metabolic activities of microorganisms. The pipelines in the prior art lack sufficient anti-corrosion coatings. Once the pipelines are corroded and perforated, oil and gas leaks will occur, which will not only interrupt transportation but also pollute the environment and even cause fires and hazards. Therefore, an anti-corrosion coating structure inside the pipeline is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above deficiencies, the present invention provides an anti-corrosion coating structure inside a pipeline, aiming to improve the problem of the pipeline lacking sufficient anti-corrosion coating in the prior art.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A pipeline inner anti-corrosion coating structure includes a connecting pipeline, wherein the inner wall of the connecting pipeline is fixedly connected to a temperature-resistant layer, the inner wall of the temperature-resistant layer is fixedly connected to an anti-rust layer, and the inner wall of the anti-rust layer is fixedly connected to a wear-resistant layer. The front and rear sides of the connecting pipeline are both provided with sealing assemblies, and the sealing assemblies are used to provide a sealing function.

[0007] As a further description of the above technical solution:

[0008] The sealing assembly includes a hydrophobic layer, the hydrophobic layer is fixedly connected to one side of the inner portion of the connecting pipe, an insulating layer is fixedly connected to one side of the hydrophobic layer, and an oxygen barrier layer is fixedly connected to the side of the insulating layer away from the hydrophobic layer;

[0009] As a further description of the above technical solution:

[0010] The heat-resistant layer is made of organic silicone resin material, which can maintain the stability and anti-corrosion performance of the coating in a high-temperature environment;

[0011] As a further description of the above technical solution:

[0012] The anti-rust layer is made of zinc chrome yellow and is used to prevent the pipeline from rusting;

[0013] As a further description of the above technical solution:

[0014] The wear-resistant layer is made of silicon carbide and is used to improve the hardness and wear resistance of the pipeline;

[0015] As a further description of the above technical solution:

[0016] The oxygen barrier layer is made of vinyl alcohol copolymer and is used to prevent oxygen from penetrating into the interior of the coating;

[0017] As a further description of the above technical solution:

[0018] The insulating layer is made of polyethylene and is used to prevent static electricity accumulation;

[0019] As a further description of the above technical solution:

[0020] The hydrophobic layer is made of polytetrafluoroethylene and is used to reduce the occurrence of corrosion.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by arranging a temperature-resistant layer in the pipeline, the damage to the coating caused by high temperature can be effectively reduced; by arranging a wear-resistant layer, the erosion and wear of solid particles in the fluid in the pipeline can be effectively resisted; by arranging an anti-rust layer, the pipeline can be prevented from rusting, so that the pipeline can effectively prevent corrosion when transporting various liquids or gases.

[0023] 2. In the present invention, an insulating layer is provided at the end of the pipeline to prevent static electricity accumulation, an oxygen barrier layer is provided to effectively prevent oxygen from penetrating into the coating, and the corrosion rate is slowed down, and a water transfer layer is provided to prevent moisture from adhering to the surface of the pipeline, so that when the pipelines are connected to each other, they have good sealing and corrosion resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional schematic diagram of an anti-corrosion coating structure inside a pipeline proposed by the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the temperature-resistant layer of the anti-corrosion coating structure inside a pipeline proposed by the present invention;

[0026] Figure 3 This is a structural schematic diagram of the oxygen barrier layer of an anti-corrosion coating structure inside a pipeline proposed by the utility model.

[0027] Legend:

[0028] 1. Connecting pipe; 2. Heat-resistant layer; 3. Anti-rust layer; 4. Wear-resistant layer; 5. Oxygen barrier layer; 6. Insulation layer; 7. Hydrophobic layer. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Reference Figure 1 - Figure 2 The utility model provides an embodiment: an anti-corrosion coating structure inside a pipeline, comprising a connecting pipeline 1, a heat-resistant layer 2 fixedly connected to the inner wall of the connecting pipeline 1, a rust-proof layer 3 fixedly connected to the inner wall of the heat-resistant layer 2, a wear-resistant layer 4 fixedly connected to the inner wall of the rust-proof layer 3, the heat-resistant layer 2 is made of an organic silicone resin material, which can maintain the stability and corrosion resistance of the coating in a high-temperature environment, and has good chemical corrosion resistance and electrical insulation, and can provide reliable protection for the pipeline, the rust-proof layer 3 is made of zinc chrome yellow, and the zinc chrome yellow rust-proof pigment has good chemical stability and corrosion resistance, and can form a stable complex on the metal surface to prevent the pipeline from rusting, and the wear-resistant layer 4 is made of silicon carbide to improve the hardness and wear resistance of the pipeline, and silicon carbide is a material with extremely high hardness. Adding it to polymer coatings can significantly improve the wear resistance of the coating. Alumina ceramic particles also have a similar effect, and their chemical stability is good, and they can resist the erosion of various corrosive media.

[0031] Reference Figure 1 and Figure 3 , sealing components are provided on the front and back sides of the connecting pipe 1, and the sealing components are used to provide sealing. The sealing components include a hydrophobic layer 7, which is fixedly connected to the inner side of the connecting pipe 1, and an insulating layer 6 is fixedly connected to one side of the hydrophobic layer 7. The insulating layer 6 is fixedly connected to the side away from the hydrophobic layer 7 with an oxygen barrier layer 5. The oxygen barrier layer 5 is made of vinyl alcohol copolymer, and forms hydrogen bonds with oxygen through the hydroxyl groups in the molecular structure to prevent the penetration of oxygen, and is used to prevent oxygen from penetrating into the interior of the coating. The insulating layer 6 is made of polyethylene, which has low cost and convenient construction. During construction, it is necessary to ensure the uniformity and thickness of the coating to ensure a good insulation effect, and is used to prevent static electricity accumulation. The hydrophobic layer 7 is made of polytetrafluoroethylene to reduce the occurrence of corrosion. Polytetrafluoroethylene is a fluorine-containing polymer with extremely low surface energy and excellent hydrophobic properties. Their molecular structure contains a large number of fluorine atoms, which makes the coating surface not easily wetted by water.

[0032] Working Principle: By providing a heat-resistant layer 2 made of silicone resin material inside the connecting pipe 1, it can be used for a long time in a high temperature environment above 200°C without decomposition or aging. The anti-rust layer 3 made of zinc chrome yellow has good chemical stability and corrosion resistance, and can form a stable complex on the metal surface to play a rust-proof role. Finally, the wear-resistant layer 4 made of silicon carbide has good chemical corrosion resistance and electrical insulation, which can provide reliable protection for the pipeline.

[0033] The end of the connecting pipe 1 is provided with an oxygen barrier layer 5 made of vinyl alcohol copolymer to prevent the penetration of oxygen and play an oxygen barrier role. The insulating layer 6 made of polyethylene is provided to effectively prevent the accumulation of static electricity and the penetration of corrosive media, prevent static electricity accumulation, and reduce the risk of explosion. Finally, the hydrophobic layer 7 made of polytetrafluoroethylene makes the coating surface not easily wetted by water, thereby preventing moisture from adhering to and penetrating the surface of the pipe.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pipeline internal anti-corrosion coating structure, comprising a connecting pipeline (1), characterized in that: The inner wall of the connecting pipe (1) is fixedly connected to a temperature-resistant layer (2), the inner wall of the temperature-resistant layer (2) is fixedly connected to a rust-proof layer (3), the inner wall of the rust-proof layer (3) is fixedly connected to a wear-resistant layer (4), and sealing components are provided on both the front and rear sides of the connecting pipe (1), and the sealing components are used to provide a sealing effect.

2. The anti-corrosion coating structure for pipelines according to claim 1, characterized in that: The sealing assembly comprises a hydrophobic layer (7), the hydrophobic layer (7) being fixedly connected to one side of the interior of the connecting pipe (1), an insulating layer (6) being fixedly connected to one side of the hydrophobic layer (7), and an oxygen barrier layer (5) being fixedly connected to the side of the insulating layer (6) away from the hydrophobic layer (7).

3. The anti-corrosion coating structure for pipelines according to claim 1, characterized in that: The temperature-resistant layer (2) is made of an organic silicon resin material and can maintain the stability and anti-corrosion performance of the coating in a high-temperature environment.

4. The anti-corrosion coating structure for pipelines according to claim 1, characterized in that: The anti-rust layer (3) is made of zinc chrome yellow and is used to prevent the pipeline from rusting.

5. The anti-corrosion coating structure for pipelines according to claim 1, characterized in that: The wear-resistant layer (4) is made of silicon carbide and is used to improve the hardness and wear resistance of the pipeline.

6. The anti-corrosion coating structure for pipelines according to claim 2, characterized in that: The oxygen barrier layer (5) is made of vinyl alcohol copolymer and is used to prevent oxygen from penetrating into the interior of the coating.

7. The anti-corrosion coating structure for pipelines according to claim 2, characterized in that: The insulating layer (6) is made of polyethylene and is used to prevent static electricity accumulation.

8. The anti-corrosion coating structure for pipelines according to claim 2, characterized in that: The hydrophobic layer (7) is made of polytetrafluoroethylene and is used to reduce the occurrence of corrosion.

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