A kind of coal gas pipeline weld leakage prevention reinforcing structure

Abstract

The utility model discloses a kind of coal gas pipeline weld anti-seepage reinforcing structures, specifically related to coal gas pipeline weld anti-seepage technical field, including two pipeline bodies, two the pipeline body welding fixed, its connecting place forms welding portion, the outer wall of the welding portion and the outer wall of similar pipeline body are coated with ammonia water corrosion resistant coating, the outer portion of the ammonia water corrosion resistant coating is coated with anticorrosive coating, reinforcing coating and ageing-resistant surface layer from inside to outside in order, the application only wraps weld area part, less material, low cost, only one sixth cost of full-wrapping reinforcing scheme, can wrap all weld of gas pipeline, prevent the appearance of the phenomenon such as drip, leak, bubble, run through weld.

Description

Technical Field

[0001] This utility model relates to the field of leak prevention in gas pipeline welds, specifically to a reinforced structure for leak prevention in gas pipeline welds. Background Technology

[0002] Currently, at the temperature of coke oven gas, there are problems with using carbon fiber to wrap the welded joints of pipelines, mainly because the special adhesive used to bond the carbon fiber has temperature resistance issues. Utility Model Content

[0003] The purpose of this invention is to provide a reinforced structure for preventing leakage at gas pipeline welds, in order to address the aforementioned shortcomings in the technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A gas pipeline weld seam anti-leakage reinforcement structure includes two pipeline bodies, which are welded and fixed together to form a welded part. The outer wall of the welded part and the outer wall of the adjacent pipeline body are coated with an anti-ammonia water corrosion coating. The outer surface of the anti-ammonia water corrosion coating is coated with an anti-corrosion coating, a reinforcing coating and an aging-resistant surface layer from the inside to the outside.

[0006] Preferably, the anti-ammonia corrosion coating is made of high molecular ceramic polymer U27, and the coverage of the anti-ammonia corrosion coating extends 10 cm to both sides from the welded part as the center, and the coating thickness of the anti-ammonia corrosion coating is 200 μm to 300 μm.

[0007] Preferably, the anti-corrosion coating is made of high molecular ceramic polymer U87, and the coverage of the anti-corrosion coating extends 12 cm to both sides from the welded part as the center, and the coating thickness of the anti-corrosion coating is 200 μm to 300 μm.

[0008] Preferably, the reinforcing coating is made of high molecular ceramic polymer UA808, and the coverage of the reinforcing coating extends 14 cm to both sides from the welded part as the center, and the coating thickness of the reinforcing coating is ≥3.0 mm.

[0009] Preferably, the aging-resistant surface layer is made of polysiloxane topcoat, and the coverage area of ​​the aging-resistant surface layer extends 15 cm to each side from the welded part as the center.

[0010] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0011] This application only covers the weld area, using less material and at a lower cost, only one-fifth the cost of a full-coverage reinforcement solution. It can completely cover the weld of the gas pipeline, preventing dripping, leaking, bubbling, and running through the weld. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

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

[0014] Figure 2 This is a cross-sectional view of the present invention;

[0015] Figure 3 for Figure 2 Enlarged view of part A in the image.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1. Pipe body; 2. Welded parts; 3. Anti-ammonia corrosion coating; 4. Anti-corrosion coating; 5. Reinforcing coating; 6. Aging resistant surface layer. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0019] This utility model provides, for example Figures 1-3 The above-described gas pipeline weld seam anti-leakage reinforcement structure includes two pipeline bodies 1, which are welded and fixed together to form a welded part 2. The outer wall of the welded part 2 and the outer wall of the adjacent pipeline body 1 are coated with an anti-ammonia corrosion coating 3. The outer surface of the anti-ammonia corrosion coating 3 is coated with an anti-corrosion coating 4, a reinforcing coating 5 and an aging-resistant surface layer 6 from the inside to the outside.

[0020] Furthermore, the anti-ammonia corrosion coating 3 is made of high molecular ceramic polymer U27, and the coverage of the anti-ammonia corrosion coating 3 extends 10 cm to both sides from the welded part 2 as the center. The coating thickness of the anti-ammonia corrosion coating 3 is 200 μm to 300 μm. The high molecular ceramic polymer U27 material has good bonding performance and anti-corrosion performance against alkaline substances such as ammonia.

[0021] Furthermore, the anti-corrosion coating 4 is made of high molecular ceramic polymer U87, and the coverage of the anti-corrosion coating 4 extends 12 cm to both sides from the welded part 2 as the center. The coating thickness of the anti-corrosion coating 4 is 200 μm to 300 μm. The high molecular ceramic polymer U87 material has good corrosion resistance and very high bonding strength, which can ensure that the coating does not fall off.

[0022] Furthermore, the reinforcing coating 5 is made of polymer ceramic polymer UA808, and the coverage area of ​​the reinforcing coating 5 extends 14 cm to both sides from the welded part 2 as the center. The coating thickness of the reinforcing coating 5 is ≥3.0 mm. The polymer ceramic polymer UA808 material has good mechanical strength, hardness, and bonding strength, which can ensure the effectiveness of the two coatings of polymer ceramic polymer U27 and polymer ceramic polymer U87. The reinforcing coating 5 is relatively light, adding extra weight to the pipeline.

[0023] Furthermore, the aging-resistant surface layer 6 is made of polysiloxane topcoat, and the coverage area of ​​the aging-resistant surface layer 6 extends 15 cm to both sides from the welded part 2 as the center. The material has good aging resistance, UV resistance, scale prevention and corrosion prevention properties, which can protect the internal coating from aging and cracking caused by UV and aging.

[0024] The materials used in this solution are all high-bonding-strength and high-corrosion-resistant materials, which can effectively solve the problem of "leaking" in gas pipelines, ensure that the above-mentioned situation will not occur in the event of weld corrosion, and prevent corrosive media from causing wider erosion.

[0025] The materials used in this solution are all mature products, and the curing speed will be adjusted when the equipment substrate temperature is high to prevent the "bond cracking" phenomenon caused by high substrate temperature. All materials used are high temperature resistant materials, which can effectively solve the temperature problem when the gas pipeline temperature is high.

[0026] In summary, the advantages of this solution are: it only wraps the weld area, uses less material, and is less expensive, costing only one-fifth of the cost of a full-wrap reinforcement solution. It can completely wrap the weld of the gas pipeline, preventing dripping, leaking, bubbling, and running through the weld.

[0027] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A gas pipeline weld seam anti-leakage reinforcement structure, comprising two pipeline bodies (1), the two pipeline bodies (1) being welded and fixed together, with the connection forming a welded part (2), characterized in that: The outer wall of the welded part (2) and the outer wall of the adjacent pipe body (1) are coated with an anti-ammonia corrosion coating (3). The outer surface of the anti-ammonia corrosion coating (3) is coated with an anti-corrosion coating (4), a reinforcing coating (5) and an aging resistant surface layer (6) from the inside to the outside.

2. The gas pipeline weld seam anti-leakage reinforcement structure according to claim 1, characterized in that: The anti-ammonia corrosion coating (3) is made of high molecular ceramic polymer U27, and the coverage of the anti-ammonia corrosion coating (3) extends 10 cm to both sides from the welded part (2) as the center. The coating thickness of the anti-ammonia corrosion coating (3) is 200 μm to 300 μm.

3. The gas pipeline weld seam anti-leakage reinforcement structure according to claim 1, characterized in that: The anti-corrosion coating (4) is made of high molecular ceramic polymer U87, and the coverage of the anti-corrosion coating (4) extends 12 cm to both sides from the welded part (2) as the center. The coating thickness of the anti-corrosion coating (4) is 200 μm to 300 μm.

4. The gas pipeline weld seam anti-leakage reinforcement structure according to claim 1, characterized in that: The reinforcing coating (5) is made of high molecular ceramic polymer UA808, and the coverage of the reinforcing coating (5) extends 14 cm to both sides from the welded part (2) as the center. The coating thickness of the reinforcing coating (5) is ≥3.0 mm.

5. The gas pipeline weld anti-leakage reinforcement structure according to claim 1, characterized in that: The aging-resistant surface layer (6) is made of polysiloxane paint, and the coverage of the aging-resistant surface layer (6) extends 15 cm to both sides from the welded part (2) as the center.

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