Corrosion-resistant preheater inner cylinder hanging piece

Abstract

The utility model relates to the technical field of preheaters, and discloses a corrosion-resistant preheater inner cylinder hanging piece which comprises a hanging piece body, a hook is fixed to the upper end of the hanging piece body, a clamping column is fixed to the inner wall of one side of the hook, a connecting groove is formed in the outer wall of the upper end of the hanging piece body, a hanging groove is formed in the outer wall of one side of the lower end of the hanging piece body, and the clamping column is fixed to the inner wall of one side of the hanging piece body. A clamping hole is formed in the inner wall of one side of the hanging groove, and an open groove is formed in the outer wall of the side, away from the hanging groove, of the hanging piece body. And the inserting hole is formed in the inner surface of the lower end of the open groove, and a plug pin is arranged in the inserting hole in a penetrating mode. The corrosion-resistant preheater inner barrel hanging piece is provided with the hook and the clamping column which are used for mutual clamping of the hanging piece bodies, the inner side surfaces of the hung hanging piece bodies are relatively smooth and have few concaves and convexes, abrasion to the surfaces of the hanging piece bodies after hot air enters an inner barrel can be effectively reduced, and the service life of the hanging piece bodies is prolonged. Part of dust carried by hot air is prevented from being accumulated at the sunken position of the hanging piece body, and accumulated heat is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of preheaters, in particular to a corrosion-resistant hanging piece for the inner cylinder of a preheater. Background Technique

[0002] The preheater utilizes the heat in the tail gas of the boiler to preheat the air entering the boiler to a certain extent, improve the heat exchange performance of the boiler, and reduce energy consumption. The heated air collides with the cylinder wall under the action of centrifugal force in the inner cylinder and then separates from the hot air flow, entering the next-stage preheating structure. The hanging pieces in the inner cylinder are in long-term contact with the hot air, and the damage rate is relatively high after long-term use.

[0003] After searching, there is a corrosion-resistant hanging piece for the inner cylinder of a preheater with the publication number of CN216409031U, which includes a bracket, a first support rod and a second support rod. The lower end of the bracket is connected with a structural ring, and the upper left end of the structural ring is connected with a hanging rack, which is used to solve the problem that a large amount of corrosive gas is likely to cause greater corrosion damage to the hanging piece of the inner cylinder.

[0004] The surface of the hanging piece of the inner cylinder is relatively uneven after combination near the inner side of the inner cylinder. The hot air carrying impurities is likely to cause greater damage at the uneven parts of the hanging piece, and these impurities are likely to accumulate in the depressions, generating accumulated heat. For this reason, we propose a corrosion-resistant hanging piece for the inner cylinder of a preheater. Summary of the Invention

[0005] The purpose of the utility model is to provide a corrosion-resistant hanging piece for the inner cylinder of a preheater to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A corrosion-resistant hanging piece for the inner cylinder of a preheater, including:

[0007] A hanging piece body, a hook is fixed at the upper end of the hanging piece body, a clamping column is fixed on one inner wall of the hook, a connecting groove is opened on the outer wall of the upper end of the hanging piece body, a hanging groove is opened on one outer wall of the lower end of the hanging piece body, a clamping hole is opened on one inner wall of the hanging groove, and a slotted hole is opened on the outer wall of the hanging piece body far away from the hanging groove;

[0008] An insertion hole is opened on the inner surface of the lower end of the slotted hole, a plug pin is inserted into the insertion hole, and the other end of the plug pin is inserted into the connecting groove. A ceramic coating is coated on the outer wall of the hanging piece body close to the hanging groove.

[0009] Preferably, the outer shapes of the hook and the hanging groove match, and the hook and the hanging groove form a clamping connection through the clamping column and the clamping hole, and the hanging piece bodies form a buckling connection through the hook and the clamping column.

[0010] Preferably, the outer shape structures of the jack and the connection groove are matched, the jack and the connection groove are connected in a communicating manner through a bolt, and the hanging piece bodies are connected by pins through the jack and the bolt.

[0011] Preferably, reinforcing rods are embedded on both sides of the hanging piece body, and pulling plates are fixed at both ends of the reinforcing rods.

[0012] Preferably, the reinforcing rods and the pulling plates are symmetrically arranged with respect to the central axis position of the hanging piece body, the pulling plates are symmetrically arranged with respect to the central axis position of the reinforcing rods, and the reinforcing rods and the hanging piece body are connected in a clamping manner through the pulling plates.

[0013] Preferably, sawteeth are arranged on the outer walls on both sides of the hanging piece body.

[0014] Preferably, the sawteeth are symmetrically arranged with respect to the central axis position of the hanging piece body, and the sawteeth are evenly distributed at equal intervals along the outer walls on both sides of the hanging piece body.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The hanging pieces of the inner cylinder of the corrosion-resistant preheater are provided with hooks and clamping columns, which are used for the mutual clamping between the hanging piece bodies. After hanging, the inner surface of the hanging piece body is relatively flat with less concavity and convexity, which can effectively reduce the abrasion of the surface of the hanging piece body when hot air enters the inner cylinder, reduce the accumulation of part of the dust carried by the hot air in the recesses of the hanging piece body, and further reduce the heat accumulation. Brief Description of the Drawings

[0017] Figure 1 is the front view structural schematic diagram of the combined state of the hanging piece body of the present utility model;

[0018] Figure 2 is the rear view structural schematic diagram of the hanging piece body of the present utility model;

[0019] Figure 3 is the partial cross-sectional view structural schematic diagram of the hanging piece body of the present utility model;

[0020] Figure 4 is the present utility model Figure 1 The enlarged structural schematic diagram at A in.

[0021] In the figure: 1. Hanging piece body; 2. Hook; 3. Clamping column; 4. Hanging groove; 5. Clamping hole; 6. Groove; 7. Jack; 8. Bolt; 9. Connection groove; 10. Ceramic coating; 11. Reinforcing rod; 12. Pulling plate; 13. Sawtooth. Detailed Description of the Embodiments

[0022] 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.

[0023] The utility model provides a corrosion-resistant preheater inner cylinder hanging piece through improvement. Figure 1 - Figure 2 The hook 2 and the clamping column 3 are connected to each other through the inner wall of the hook 2, and the hook 2 and the clamping column 3 are connected to each other, and the hook 2 and the clamping column 3 are connected to each other through the hook 2 and the clamping column 3. The hook 2 and the clamping column 3 are used to engage with each other between the hanging bodies 1, and the inner surface of the hanging body 1 after hanging is relatively flat and has few bumps, which can effectively reduce the wear of the surface of the hanging body 1 after the hot air enters the inner cylinder, and reduce the accumulation of dust carried by the hot air in the depression of the hanging body 1, thereby further reducing heat accumulation; the outer wall of the hanging body 1 away from the hanging groove 4 The wall is provided with a slot 6, which is used to reduce the contact area between the hanging piece body 1 and the inner cylinder and reduce the heat conduction rate; the inner surface of the lower end of the slot 6 is provided with a socket 7, and a pin 8 is passed through the inside of the socket 7, and the other end of the pin 8 is passed through the inside of the connecting groove 9. The socket 7 matches the outer structure of the connecting groove 9, and the socket 7 is connected to the connecting groove 9 through the pin 8, and the hanging piece bodies 1 are pin-connected through the socket 7 and the pin 8. The hanging piece bodies 1 are pin-connected through the pin 8, the socket 7 and the connecting groove 9, which reduces the shaking of the hanging piece bodies 1 after the connection and reduces the friction loss between the hanging pieces. The outer wall of the hanging piece body 1 on the side close to the hanging groove 4 is coated with a ceramic coating 10. The ceramic coating 10 is used to enhance the corrosion resistance and high temperature resistance of the hanging piece body 1 when working in the inner cylinder, and extend the service life of the hanging piece body 1 in the high temperature environment of the inner cylinder.

[0024] See also Figure 3, A corrosion-resistant inner cylinder hanging piece of a preheater, comprising: reinforcing bars 11 are embedded on both sides of the hanging piece body 1. The reinforcing bars 11 are made of 65 manganese steel, which has the characteristics of high temperature resistance and high hardness, and is used to enhance the structural strength inside the hanging piece body 1; both ends of the reinforcing bars 11 are fixed with pull plates 12, and the pull plates 12 are symmetrically arranged about the central axis position of the reinforcing bars 11. The reinforcing bars 11 and the pull plates 12 are symmetrically arranged about the central axis position of the hanging piece body 1, and the reinforcing bars 11 are connected to the hanging piece body 1 in a snap-fit manner through the pull plates 12. The arranged reinforcing bars 11 are used to improve the tensile and anti-breaking abilities of the hanging piece body 1 through the fixing effect of the pull plates 12 at both ends, and extend the service life of the hanging piece body 1 in the inner cylinder.

[0025] Please refer to Figure 1 and Figure 4 , A corrosion-resistant inner cylinder hanging piece of a preheater, comprising: sawteeth 13 are arranged on the outer walls of both sides of the hanging piece body 1, and the sawteeth 13 are evenly distributed at equal intervals along the outer walls of both sides of the hanging piece body 1, and the sawteeth 13 are symmetrically arranged about the central axis position of the hanging piece body 1. The arranged sawteeth 13 are used to increase the friction force between adjacent two hanging pieces, prevent the hanging pieces from swinging greatly when being impacted by hot air when hanging in the inner cylinder, and improve the stability of the hanging pieces when working in the inner cylinder.

[0026] Working principle: For this kind of corrosion-resistant inner cylinder hanging piece of a preheater, first, the staff installs and hangs the uppermost hanging piece body 1 on the upper edge of the inner cylinder through fasteners, so that the outer wall of the hanging piece body 1 coated with the ceramic coating 10 faces the center of the inner cylinder. Then, another hanging piece body 1 is snap-fitted with the hanging groove 4 and the clamping hole 5 opened on the upper end hanging piece body 1 through the hook 2 and the clamping post 3. After the hanging piece bodies 1 are snap-fitted and fixed, the surface coated with the ceramic coating 10 can remain flat, and there are fewer depressions and gaps exposed after combination. Subsequently, the staff inserts the bolt 8 into the jack 7 opened on the inner wall of the slotted groove 6, and after the bolt 8 penetrates through the jack 7, it is inserted into the connecting groove 9 on the upper surface of the lower hanging piece body 1. The two hanging piece bodies 1 are connected by a pin through the bolt 8. With the snap-fitting effect of the hook 2 and the clamping post 3, the hanging piece bodies 1 are not easy to shake after being fixed, preventing the hanging piece bodies 1 from falling off the inner cylinder. Finally, the adjacent two hanging piece bodies 1 on both sides are attached through the sawteeth 13 arranged on the outer walls on both sides, and the friction force between each other is increased through the sawteeth 13, reducing the amplitude of the hanging piece body 1 shaking due to being agitated by hot air or impurities in the inner cylinder, improving the stability of the hanging piece body 1 after being installed in the inner cylinder. And reinforcing bars 11 made of 65 manganese steel are embedded on both sides inside the hanging piece body 1, and the reinforcing bars 11 tighten and strengthen the overall structure of the hanging piece through the pull plates 12 at both ends, extending the service life of the hanging piece body 1 in the inner cylinder.

[0027] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A hanging piece for the inner cylinder of a corrosion-resistant preheater, characterized in that, Including: A hanging piece body (1), a hook (2) is fixed at the upper end of the hanging piece body (1), a clamping column (3) is fixed on the inner wall of one side of the hook (2), a connecting groove (9) is formed on the outer wall of the upper end of the hanging piece body (1), a hanging groove (4) is formed on the outer wall of one side of the lower end of the hanging piece body (1), a clamping hole (5) is formed on the inner wall of one side of the hanging groove (4), and a slot (6) is formed on the outer wall of the side of the hanging piece body (1) away from the hanging groove (4); A jack (7) is formed on the inner surface of the lower end of the slot (6), a plug pin (8) is inserted into the jack (7), and the other end of the plug pin (8) is inserted into the connecting groove (9). A ceramic coating (10) is coated on the outer wall of the side of the hanging piece body (1) close to the hanging groove (4).

2. The hanging piece for the inner cylinder of the corrosion-resistant preheater according to claim 1, wherein: The outer dimensions of the hook (2) are matched with those of the hanging groove (4), and the hook (2) and the hanging groove (4) are in snap connection through the clamping column (3) and the clamping hole (5), and the hanging piece bodies (1) are in snap connection through the hook (2) and the clamping column (3).

3. A hanging piece for the inner cylinder of a corrosion-resistant preheater according to claim 1, characterized in that: The outer shape structure of the jack (7) is matched with that of the connecting groove (9), and the jack (7) and the connecting groove (9) are in communication connection through the plug pin (8), and the hanging piece bodies (1) are in pin connection through the jack (7) and the plug pin (8).

4. A hanging piece for the inner cylinder of a corrosion-resistant preheater according to claim 1, characterized in that: Reinforcing rods (11) are embedded on both sides of the hanging piece body (1), and pull plates (12) are fixed at both ends of the reinforcing rods (11).

5. A hanging piece for the inner cylinder of a corrosion-resistant preheater according to claim 4, characterized in that: The reinforcing rods (11) and the pull plates (12) are symmetrically arranged about the central axis position of the hanging piece body (1), the pull plates (12) are symmetrically arranged about the central axis position of the reinforcing rods (11), and the reinforcing rods (11) and the hanging piece body (1) are in snap connection through the pull plates (12).

6. The hanging piece for the inner cylinder of a corrosion-resistant preheater according to claim 1, wherein: Saw teeth (13) are arranged on the outer walls of both sides of the hanging piece body (1).

7. The hanging piece for the inner cylinder of the corrosion-resistant preheater according to claim 6, wherein: The saw teeth (13) are symmetrically arranged about the central axis position of the hanging piece body (1), and the saw teeth (13) are evenly distributed at equal intervals along the outer walls of both sides of the hanging piece body (1).

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