Abrasion-proof device for central air duct of boiler burner

Abstract

The utility model relates to the technical field of boiler combustors, in particular to an anti-abrasion device for a central air duct of a boiler combustor. The metal wear-resistant alloy sleeve comprises a boiler burner air duct, a metal wear-resistant alloy sleeve inner layer is arranged in the boiler burner air duct, a reinforcing layer is arranged on the circumferential side of the metal wear-resistant alloy sleeve inner layer, a metal wear-resistant alloy sleeve outer layer is arranged on the circumferential side of the reinforcing layer, and a connecting thread groove is formed in the circumferential side of the metal wear-resistant alloy sleeve outer layer. The circumferential inner wall of the boiler burner air duct is in threaded connection with the interior of the connecting threaded groove, the metal abrasion-resistant alloy sleeve inner layer and the metal abrasion-resistant alloy sleeve outer layer can improve the abrasion-resistant effect of the inner wall of the boiler burner air duct, the abrasion resistance of the air duct is improved, the damaged abrasion-resistant sleeve can be replaced conveniently, and the protection performance of the air duct is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler burners, in particular to an anti-wear device for a central air duct of a boiler burner. Background Art

[0002] Boiler burner refers to the burner used on the boiler. Boiler burner is the most important equipment among the auxiliary equipment of oil and gas boilers. Boiler burners are mainly divided into oil burners, gas burners and dual-fuel burners (also called oil and gas dual-purpose burners). Oil burners can be divided into light oil burners and heavy oil burners. Light oil mainly refers to diesel, and heavy oil refers to the heavy oil left after gasoline and diesel are extracted from crude oil; gas burners can be divided into natural gas burners, city gas burners, liquefied petroleum gas burners and biogas burners.

[0003] The publication number is CN207864871U, a primary air duct for a pulverized coal boiler, the air duct comprising a first air duct and a second air duct whose pipe openings are interconnected, a first C-shaped spring sheet is arranged in the first air duct, and a plurality of first ceramic rings are arranged between the pipe opening of the first air duct and the first C-shaped spring sheet; a second C-shaped spring sheet is arranged in the second air duct, and a plurality of second ceramic rings are arranged between the pipe opening of the second air duct and the second C-shaped spring sheet. The utility model is an air duct for a pulverized coal boiler, which can completely solve the wear problem of the primary air duct of the pulverized coal boiler, extend the service life of the primary air duct, reduce the shutdown of the boiler for maintenance, and ensure the continuous operation of the boiler. Compared with the existing anti-wear technology, it saves welding, laying and other processes, and saves construction costs;

[0004] The wear resistance of the first air duct and the second branch pipe is improved by arranging ceramic rings and C-shaped spring sheets on the inner walls of the first air duct and the second branch pipe. However, when the ceramic rings and the C-shaped spring sheets are worn, it is troublesome to replace the ceramic rings and the C-shaped spring sheets. After the ceramic rings and the C-shaped spring sheets can no longer improve the anti-wear effect of the branch pipe, the air duct body will be worn again. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a boiler burner central air duct anti-wear device, which is provided with a wear-resistant sleeve, thereby improving the wear resistance of the air duct and facilitating the replacement of damaged wear-resistant sleeves, thereby improving the protective effect of branch pipes.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A boiler burner central air duct anti-wear device comprises a boiler burner air duct, wherein a metal wear-resistant alloy sleeve inner layer is arranged in the boiler burner air duct, a reinforcement layer is arranged on the circumferential side of the metal wear-resistant alloy sleeve inner layer, an outer metal wear-resistant alloy sleeve outer layer is arranged on the circumferential side of the reinforcement layer, a connecting thread groove is opened on the circumferential side of the metal wear-resistant alloy sleeve outer layer, and the circumferential inner wall of the boiler burner air duct is threadedly connected to the connecting thread groove.

[0008] By adopting the above technical scheme, the boiler burner air duct, the metal wear-resistant alloy sleeve inner layer, the metal wear-resistant alloy sleeve outer layer, and the connecting thread groove cooperate, the metal wear-resistant alloy sleeve outer layer and the metal wear-resistant alloy sleeve inner layer can be connected to the boiler burner air duct, and the metal wear-resistant alloy sleeve inner layer and the metal wear-resistant alloy sleeve outer layer can improve the anti-wear effect of the inner wall of the boiler burner air duct.

[0009] In a preferred example, the utility model can be further configured as follows: a plurality of reinforcing rib installation grooves are evenly opened on one side of the reinforcement layer, and reinforcing ribs are arranged in the plurality of reinforcing rib installation grooves.

[0010] By adopting the above technical solution, the reinforcing ribs can improve the reinforcement effect of the reinforcement layer.

[0011] In a preferred example, the utility model can be further configured as follows: an alloy mesh layer is fixedly connected to the circumferential side of the inner layer of the metal wear-resistant alloy sleeve, a metal winding layer is wound around the circumferential side of the alloy mesh layer, and the alloy mesh layer is fixed to the circumferential inner wall of the reinforcement layer.

[0012] By adopting the above technical solution, the alloy mesh layer and the metal winding layer can improve the splitting resistance of the inner layer of the metal wear-resistant alloy sleeve. When cracks appear in the inner layer of the metal wear-resistant alloy sleeve due to wear, the metal winding layer and the alloy mesh layer can prevent the inner layer of the metal wear-resistant alloy sleeve from cracking as a whole.

[0013] In a preferred example, the utility model can be further configured as follows: a metal braided layer is fixedly connected to the circumferential side of the reinforcement layer, and the metal braided layer is fixed to the circumferential inner wall of the outer layer of the metal wear-resistant alloy sleeve.

[0014] By adopting the above technical solution, the metal braided layer can improve the overall wear resistance of the anti-wear sleeve.

[0015] In a preferred example, the utility model can be further configured as follows: a plurality of anti-wear sleeve heat dissipation grooves are provided on the circumferential sides of the outer layer and the reinforcement layer of the metal wear-resistant alloy sleeve, and the plurality of anti-wear sleeve heat dissipation grooves are evenly distributed on the circumferential sides of the outer layer and the reinforcement layer of the metal wear-resistant alloy sleeve.

[0016] By adopting the above technical solution, the inner layer of the metal wear-resistant alloy sleeve, the outer layer of the metal wear-resistant alloy sleeve and the connecting thread groove can improve the overall wear resistance of the wear-resistant sleeve.

[0017] In a preferred example, the utility model can be further configured as follows: one side of the inner layer of the metal wear-resistant alloy sleeve is fixedly connected with a wear-resistant sleeve connecting ring, and the alloy mesh layer, reinforcement layer, metal braided layer and the outer layer of the metal wear-resistant alloy sleeve are all fixed to the wear-resistant sleeve connecting ring.

[0018] By adopting the above technical solution, the anti-wear sleeve connecting ring can facilitate the connection between the inner layer of the metal wear-resistant alloy sleeve and the outer layer of the metal wear-resistant alloy sleeve and the air duct of the boiler burner.

[0019] In summary, the present invention includes at least one of the following beneficial technical effects:

[0020] 1. A boiler burner air duct, a metal wear-resistant alloy sleeve inner layer, a metal wear-resistant alloy sleeve outer layer, and a connecting threaded groove are provided. The metal wear-resistant alloy sleeve inner layer, the metal wear-resistant alloy sleeve outer layer, and a reinforcement layer form a wear-resistant sleeve. The wear-resistant sleeve can improve the overall wear resistance of the inner wall of the boiler burner air duct. The metal wear-resistant alloy sleeve outer layer and the metal wear-resistant alloy sleeve inner layer can be connected to the boiler burner air duct. The metal wear-resistant alloy sleeve inner layer and the metal wear-resistant alloy sleeve outer layer can improve the wear resistance of the inner wall of the boiler burner air duct, improve the wear resistance of the air duct, and facilitate the replacement of the damaged wear-resistant sleeve, thereby improving the protection of the branch pipe.

[0021] 2. A metal winding layer, an alloy mesh layer, reinforcement ribs, reinforcement rib installation grooves and a metal braided layer are provided. The alloy mesh layer is provided on the surface of the inner layer of the metal wear-resistant alloy sleeve to improve the crack resistance of the inner layer of the metal wear-resistant alloy sleeve. The metal winding layer is wound on the surface of the inner layer of the metal wear-resistant alloy sleeve and the alloy mesh layer to improve the reinforcement and crack resistance at the same time. The reinforcement layer and the reinforcement ribs cooperate to improve the overall crack resistance of the wear-resistant sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a stereogram of this embodiment;

[0023] Figure 2 is a three-dimensional cross-sectional view of this embodiment;

[0024] Figure 3 This embodiment Figure 2 A partial enlarged view of point A in the middle.

[0025] In the figure, 1. Boiler burner air duct; 2. Metal wear-resistant alloy sleeve inner layer; 3. Alloy mesh layer; 4. Reinforcement layer; 5. Metal winding layer; 6. Metal braided layer; 7. Metal wear-resistant alloy sleeve outer layer; 8. Connecting thread groove; 9. Reinforcement rib; 10. Anti-wear sleeve heat dissipation groove; 11. Anti-wear sleeve connecting ring; 12. Reinforcement rib installation groove. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] Reference Figure 1-3 The utility model discloses a boiler burner central wind tube wear-proof device, comprising a boiler burner wind tube 1, preferably, the inner wall side of the boiler burner wind tube 1 is provided with a thread matching the connecting thread groove 8, a metal wear-resistant alloy sleeve inner layer 2 is provided in the boiler burner wind tube 1, preferably, the reinforcement layer 4 is made of metal alloy material, the circumferential side of the metal wear-resistant alloy sleeve inner layer 2 is provided with a reinforcement layer 4, the circumferential side of the reinforcement layer 4 is provided with a metal wear-resistant alloy sleeve outer layer 7, and the circumferential side of the metal wear-resistant alloy sleeve outer layer 7 is opened There is a connecting thread groove 8, and the circumferential inner wall of the boiler burner air duct 1 is threadedly connected to the connecting thread groove 8. The metal wear-resistant alloy sleeve inner layer 2, the metal wear-resistant alloy sleeve outer layer 7, and the reinforcement layer 4 form a wear-resistant sleeve. The wear-resistant sleeve can improve the overall wear resistance of the inner wall of the boiler burner air duct 1. The metal wear-resistant alloy sleeve outer layer 7 and the metal wear-resistant alloy sleeve inner layer 2 can be connected to the boiler burner air duct 1, and the metal wear-resistant alloy sleeve inner layer 2 and the metal wear-resistant alloy sleeve outer layer 7 can improve the anti-wear effect of the inner wall of the boiler burner air duct 1.

[0028] A plurality of reinforcing rib installation grooves 12 are evenly formed on one side of the reinforcing layer 4 , and reinforcing ribs 9 are arranged in the plurality of reinforcing rib installation grooves 12 . The reinforcing ribs 9 can improve the reinforcing effect of the reinforcing layer 4 .

[0029] The circumferential side of the inner layer 2 of the metal wear-resistant alloy sleeve is fixedly connected with an alloy mesh layer 3, and the circumferential side of the alloy mesh layer 3 is wound with a metal winding layer 5. The alloy mesh layer 3 is fixed to the circumferential inner wall of the reinforcement layer 4. The alloy mesh layer 3 and the metal winding layer 5 can improve the splitting resistance of the inner layer 2 of the metal wear-resistant alloy sleeve. When cracks appear in the inner layer 2 of the metal wear-resistant alloy sleeve due to wear, the metal winding layer 5 and the alloy mesh layer 3 can prevent the inner layer 2 of the metal wear-resistant alloy sleeve from cracking as a whole. The circumferential side of the reinforcement layer 4 is fixedly connected with a metal braided layer 6, and the metal braided layer 6 is fixed to the circumferential inner wall of the outer layer 7 of the metal wear-resistant alloy sleeve. The metal braided layer 6 can improve the overall wear resistance of the wear-resistant sleeve. A plurality of anti-wear sleeve heat dissipation grooves 10 are provided on the circumferential sides of the metal wear-resistant alloy sleeve outer layer 7 and the reinforcement layer 4, and the plurality of anti-wear sleeve heat dissipation grooves 10 are evenly distributed on the circumferential sides of the metal wear-resistant alloy sleeve outer layer 7 and the reinforcement layer 4. The anti-wear sleeve heat dissipation grooves 10 can improve the overall heat dissipation of the wear-resistant sleeve. The alloy mesh layer 3 is arranged on the surface of the metal wear-resistant alloy sleeve inner layer 2 to improve the crack resistance of the metal wear-resistant alloy sleeve inner layer 2. The metal winding layer 5 is wound on the surface of the metal wear-resistant alloy sleeve inner layer 2 and the alloy mesh layer 3 to improve the reinforcement and crack resistance at the same time. The reinforcement layer 4 and the reinforcement rib 9 cooperate to improve the overall crack resistance of the wear-resistant sleeve.

[0030] A wear-resistant sleeve connecting ring 11 is fixedly connected to one side of the metal wear-resistant alloy sleeve inner layer 2, and the alloy mesh layer 3, the reinforcement layer 4, the metal braided layer 6 and the metal wear-resistant alloy sleeve outer layer 7 are all fixed to the wear-resistant sleeve connecting ring 11. The wear-resistant sleeve connecting ring 11 can facilitate the connection of the metal wear-resistant alloy sleeve inner layer 2 and the metal wear-resistant alloy sleeve outer layer 7 with the boiler burner air duct 1.

[0031] The implementation principle of the above embodiment is: the wear-resistant sleeve composed of the metal wear-resistant alloy sleeve inner layer 2, the alloy mesh layer 3, the metal winding layer 5, the reinforcement layer 4, the metal braided layer 6 and the metal wear-resistant alloy sleeve outer layer 7 is inserted into the boiler burner air duct 1, and when the wear-resistant sleeve moves to the connecting thread groove 8, the connecting thread groove 8 is rotated, and the connecting thread groove 8 and the inner wall of the boiler burner air duct 1 are threadedly connected, and the wear-resistant sleeve can improve the overall wear resistance of the inner wall of the boiler burner air duct 1. The metal wear-resistant alloy sleeve outer layer 7 and the metal wear-resistant alloy sleeve inner layer 2 can be connected to the boiler burner air duct 1, and the metal wear-resistant alloy sleeve inner layer 2 and the metal wear-resistant alloy sleeve outer layer 7 can improve the wear resistance of the inner wall of the boiler burner air duct 1, and the damaged wear-resistant sleeve can also be replaced.

[0032] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0033] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A boiler burner central air duct anti-wear device, comprising a boiler burner air duct (1), characterized in that: The boiler burner air duct (1) is provided with a metal wear-resistant alloy sleeve inner layer (2), a reinforcement layer (4) is provided on the circumferential side of the metal wear-resistant alloy sleeve inner layer (2), a metal wear-resistant alloy sleeve outer layer (7) is provided on the circumferential side of the reinforcement layer (4), a connecting thread groove (8) is provided on the circumferential side of the metal wear-resistant alloy sleeve outer layer (7), and the circumferential inner wall of the boiler burner air duct (1) is threadedly connected to the connecting thread groove (8).

2. The anti-wear device for the central air duct of a boiler burner according to claim 1, characterized in that: A plurality of reinforcing rib installation grooves (12) are evenly provided on one side of the reinforcing layer (4), and reinforcing ribs (9) are arranged in the plurality of reinforcing rib installation grooves (12).

3. The anti-wear device for the central air duct of a boiler burner according to claim 1, characterized in that: The circumferential side of the inner layer (2) of the metal wear-resistant alloy sleeve is fixedly connected to an alloy mesh layer (3), the circumferential side of the alloy mesh layer (3) is wound with a metal winding layer (5), and the alloy mesh layer (3) is fixed to the circumferential inner wall of the reinforcement layer (4).

4. The anti-wear device for the central air duct of a boiler burner according to claim 3, characterized in that: The metal braided layer (6) is fixedly connected to the circumferential side of the reinforcement layer (4), and the metal braided layer (6) is fixed to the circumferential inner wall of the outer layer (7) of the metal wear-resistant alloy sleeve.

5. The anti-wear device for the central air duct of a boiler burner according to claim 4, characterized in that: The outer layer (7) of the metal wear-resistant alloy sleeve and the circumferential side of the reinforcement layer (4) are both provided with a plurality of wear-resistant sleeve heat dissipation grooves (10), and the plurality of wear-resistant sleeve heat dissipation grooves (10) are evenly distributed on the circumferential side of the outer layer (7) of the metal wear-resistant alloy sleeve and the reinforcement layer (4).

6. The anti-wear device for the central air duct of a boiler burner according to claim 4, characterized in that: A wear-resistant sleeve connecting ring (11) is fixedly connected to one side of the metal wear-resistant alloy sleeve inner layer (2), and the alloy mesh layer (3), the reinforcement layer (4), the metal braided layer (6) and the metal wear-resistant alloy sleeve outer layer (7) are all fixed to the wear-resistant sleeve connecting ring (11).

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