Abrasion resistant hot elbow lined with ceramic coating

Abstract

The utility model relates to the technical field of hot bend, concretely is a kind of wear-resistant hot bend of lining ceramic coating, including bend main part, the bend main part includes outer layer metal pipe, the outer layer metal pipe outside is provided with anticorrosive coating, the inner side of outer layer metal pipe is connected with heat insulating layer, the inner side of heat insulating layer is fixedly connected with inner layer metal pipe, the inner side of inner layer metal pipe is fixedly connected with ceramic coating, the inner wall of inner layer metal pipe is provided with several evenly distributed protruding ball, the protruding ball is embedded in ceramic coating, the alumina-based ceramic coating of inner layer metal pipe inner side fixed connection, thickness reaches 3-8mm, can greatly improve the wear resistance of bend main part, effectively resist the scouring abrasion of conveying medium, and the inner wall is provided with several evenly distributed hemispherical protruding ball embedded in ceramic coating, the combination of both is strengthened, avoid ceramic coating to fall off, prolong the service life of bend.

Description

Technical Field

[0001] This utility model relates to the field of hot elbow technology, specifically a wear-resistant hot elbow with an inner ceramic coating. Background Technology

[0002] In industrial pipeline systems, elbows are key components for changing the direction of media flow and are widely used in metallurgy, power, and chemical industries. Pipelines in these fields often need to transport high-temperature, particulate, or corrosive media, which places extremely high demands on the wear resistance, high-temperature resistance, and corrosion resistance of elbows. Traditional elbows are mostly made of a single metal material; when transporting high-temperature and highly abrasive media, the inner wall is easily subjected to continuous erosion and rapid wear, resulting in a short service life and frequent replacement, severely impacting production continuity. Even with wear-resistant coatings, traditional elbows often experience peeling due to insufficient adhesion, further exacerbating wear and increasing maintenance costs. Therefore, this invention proposes a wear-resistant thermal elbow with an inner ceramic coating to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a wear-resistant heat-resistant elbow with an inner ceramic coating to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant heat-resistant elbow with an inner ceramic coating, comprising an elbow body, the elbow body comprising an outer metal tube, the outer metal tube having an anti-corrosion coating on its outer side, an insulation layer connected to the inner side of the outer metal tube, an inner metal tube fixedly connected to the inner side of the insulation layer, a ceramic coating fixedly connected to the inner side of the inner metal tube, and a plurality of evenly distributed protruding balls on the inner wall of the inner metal tube, the protruding balls being embedded in the ceramic coating.

[0005] Preferably, the elbow body is provided with flanges at both ends, and the flanges are provided with mounting holes.

[0006] Preferably, the heat insulation layer is made of ceramic fiber felt with a thickness of 10-20 mm.

[0007] Preferably, the ceramic coating is an alumina-based ceramic coating with a thickness of 3-8 mm.

[0008] Preferably, the surface of the flange is provided with a ceramic coating of the same material as the inner wall of the elbow body.

[0009] Preferably, the protruding sphere is hemispherical.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The inner metal pipe features an alumina-based ceramic coating, 3-8mm thick, which significantly improves the wear resistance of the elbow body and effectively resists the erosion and wear of the transported medium. Several evenly distributed hemispherical protrusions embedded in the ceramic coating on the inner wall enhance the bonding force, preventing the ceramic coating from peeling off and extending the elbow's service life. Secondly, the outer metal pipe has a 10-20mm thick insulation layer made of ceramic fiber felt, effectively blocking heat transfer and reducing heat loss, ensuring stable operation of the elbow in high-temperature environments. Thirdly, the anti-corrosion coating on the outer metal pipe protects the elbow body from external corrosion, improving its corrosion resistance. Finally, the flanges with mounting holes at both ends of the elbow body facilitate installation and connection, and the ceramic coating on the flange surface, made of the same material as the inner wall of the elbow body, ensures wear resistance and high-temperature resistance at the flange, further enhancing the overall reliability of the elbow. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the structure of each layer of this utility model.

[0014] Figure 3 This is a schematic diagram of the inner metal tube structure of this utility model.

[0015] In the diagram: 1. Elbow body; 2. Flange; 3. Anti-corrosion coating; 4. Outer metal pipe; 5. Insulation layer; 6. Inner metal pipe; 7. Ceramic coating; 8. Raised ball. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1 to 3This utility model provides a technical solution: a wear-resistant heat-resistant elbow with an inner ceramic coating, comprising an elbow body 1, an outer metal pipe 4, an anti-corrosion coating 3 on the outer side of the outer metal pipe 4, a heat insulation layer 5 connected to the inner side of the outer metal pipe 4, an inner metal pipe 6 fixedly connected to the inner side of the heat insulation layer 5, a ceramic coating 7 fixedly connected to the inner side of the inner metal pipe 6, and a plurality of evenly distributed protruding balls 8 on the inner wall of the inner metal pipe 6, the protruding balls 8 being embedded in the ceramic coating 7. The alumina-based ceramic coating 7 fixedly connected to the inner side of the inner metal pipe 6 has a thickness of 3-8mm, which can significantly improve the wear resistance of the elbow body 1 and effectively resist the erosion and wear of the conveying medium. The plurality of evenly distributed hemispherical protruding balls 8 on the inner wall are embedded in the ceramic coating. In layer 7, the bonding force between the two is enhanced, preventing the ceramic coating 7 from peeling off and extending the service life of the elbow. Secondly, the heat insulation layer 5, made of ceramic fiber felt and 10-20mm thick, connected to the inner side of the outer metal pipe 4, can effectively block heat transfer, reduce heat loss, and ensure the stable operation of the elbow in high-temperature environments. The anti-corrosion coating 3 set on the outer side of the outer metal pipe 4 can protect the elbow body 1 from external environmental corrosion and improve its corrosion resistance. In addition, the flanges 2 with mounting holes at both ends of the elbow body 1 facilitate the installation and connection of the elbow, and the ceramic coating 7 on the surface of the flange 2, which is made of the same material as the inner wall of the elbow body 1, ensures the wear resistance and high-temperature resistance of the flange 2, further improving the overall reliability of the elbow.

[0018] The elbow body 1 has flanges 2 at both ends, and the flanges 2 have mounting holes. The flanges 2 with mounting holes at both ends of the elbow body 1 facilitate the installation and connection of the elbow.

[0019] The insulation layer 5 is made of ceramic fiber felt with a thickness of 10-20mm, which can effectively block heat transfer, reduce heat loss, and ensure the stable operation of the elbow in high-temperature environments.

[0020] The ceramic coating 7 is an alumina-based ceramic coating with a thickness of 3-8mm, which can significantly improve the wear resistance of the elbow body 1 and effectively resist the erosion and wear of the conveying medium.

[0021] The surface of flange 2 is coated with a ceramic coating 7 of the same material as the inner wall of elbow body 1, and the raised ball 8 is hemispherical, which ensures the wear resistance and high temperature resistance of flange 2 and further improves the reliability of the entire elbow.

[0022] The elbow body 1 is based on the outer metal pipe 4. An anti-corrosion coating 3 is first applied to its outer side to resist external corrosion. The inner side of the outer metal pipe 4 is connected to a heat insulation layer 5 made of ceramic fiber felt with a thickness of 10-20mm to achieve heat insulation function. The inner metal pipe 6 is fixedly connected to the inner side of the heat insulation layer 5. The inner wall of the inner metal pipe 6 is provided with several evenly distributed hemispherical protrusions 8. Then, an alumina-based ceramic coating 7 with a thickness of 3-8mm is fixedly connected to the inner side of the inner metal pipe 6, and the hemispherical protrusions 8 are embedded in the ceramic coating 7 to enhance the bonding force. At the same time, flanges 2 with mounting holes are provided at both ends of the elbow body 1, and a ceramic coating 7 of the same material as the inner wall of the elbow body 1 is applied to the surface of the flanges 2, thereby forming a complete wear-resistant heat elbow with an inner ceramic coating, which can be used for the transportation of high-temperature and high-wear media.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant heat-resistant elbow with an inner ceramic coating, comprising an elbow body (1), characterized in that: The elbow body (1) includes an outer metal tube (4), an anti-corrosion coating (3) is provided on the outside of the outer metal tube (4), a heat insulation layer (5) is connected to the inside of the outer metal tube (4), an inner metal tube (6) is fixedly connected to the inside of the heat insulation layer (5), a ceramic coating (7) is fixedly connected to the inside of the inner metal tube (6), and a number of evenly distributed protruding balls (8) are provided on the inner wall of the inner metal tube (6), the protruding balls (8) are embedded in the ceramic coating (7).

2. The wear-resistant heat-resistant elbow with an inner ceramic coating according to claim 1, characterized in that: The elbow body (1) is provided with flanges (2) at both ends, and the flanges (2) are provided with mounting holes.

3. The wear-resistant heat-resistant elbow with an inner ceramic coating according to claim 1, characterized in that: The heat insulation layer (5) is made of ceramic fiber felt with a thickness of 10-20 mm.

4. The wear-resistant heat-resistant elbow with an inner ceramic coating according to claim 1, characterized in that: The ceramic coating (7) is an alumina-based ceramic coating with a thickness of 3-8 mm.

5. The wear-resistant heat-resistant elbow with an inner ceramic coating according to claim 2, characterized in that: The surface of the flange (2) is provided with a ceramic coating (7) of the same material as the inner wall of the elbow body (1).

6. The wear-resistant heat-resistant elbow with an inner ceramic coating according to claim 1, characterized in that: The raised ball (8) is hemispherical.

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