Cantilever constant self-adaptive sealing device of rotary air pre-heater

Abstract

The utility model discloses a rotary air pre-heater cantilever constant self-adaptive sealing device in the technical field of rotary air pre-heaters, which comprises a rotary air pre-heater, the rotary air pre-heater comprises a central cylinder, and a fan-shaped plate is mounted above the outer wall of the central cylinder. According to the utility model, the inner side and the outer side of the cantilever rotor frame of the rotary air pre-heater are correspondingly arranged on the sealing sheet A and the sealing sheet B, the sealing sheet A is in butt joint with the interior of the sliding chute A on the rotor frame in a sliding manner through the guide block A, and the sealing sheet B is in butt joint with the interior of the sliding chute B on the bevel plate in a sliding manner through the guide block B; a guide block A and a guide block B are matched with a compression spring A and a compression spring B, and the compression spring A and the compression spring B in the compression state are enabled to be in contact with the lower part of a fan-shaped plate according to the fact that the initial state of the compression spring A and the compression spring B is the compression state.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary air preheaters, and specifically relates to a rotary air preheater cantilever constant adaptive sealing device. Background Technique

[0002] A rotary air preheater is a heat exchanger used in thermal power stations, boilers and other equipment, aiming to improve the combustion efficiency of fuel and the utilization rate of thermal energy. Its main working principle is to transfer the heat in the flue gas to the incoming air by rotating, so as to preheat the air entering the boiler. At present, during the operation of the rotary air preheater, due to the influence of heat on the rotor part, deformation is likely to occur. In the deformed state of the rotary air preheater, a gap is generated between the rotor part and the sector plate part, which in turn causes air leakage in the rotary air preheater, and the sealing effect is relatively affected. By sealing the rotary air preheater with sealing sheets, and the sealing sheets are usually installed in the rotor part area. When the rotor generates thermal deformation, the sealing sheets are affected by the deformation, resulting in the situation of inability to seal, thus reducing the sealing performance of the rotary air preheater and indirectly affecting the use effect of the rotary air preheater.

[0003] Therefore, it is necessary to develop a rotary air preheater cantilever constant adaptive sealing device. Content of the Utility Model

[0004] The purpose of the utility model is to provide a rotary air preheater cantilever constant adaptive sealing device to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A rotary air preheater cantilever constant adaptive sealing device, including a rotary air preheater, the rotary air preheater includes a central cylinder, a sector plate is installed above the outer wall of the central cylinder, a rotor frame is installed below the outer wall of the central cylinder, and a chute A is opened above the surface of the rotor frame;

[0006] A folding plate is installed on one outer wall of the rotor frame, a guiding hole A is opened below the surface of the folding plate, a chute B is opened above one side of the surface of the folding plate, a sealing sheet A is installed on the other outer wall of the rotor frame, and a sealing sheet B is installed on one outer wall of the rotor frame.

[0007] Preferably, a partition plate A is installed on one outer wall of the rotor frame.

[0008] Preferably, a guiding plate is installed above the other outer wall of the folding plate, a guiding hole B is opened on the surface of the guiding plate, and a partition plate B is installed on one outer wall of the folding plate.

[0009] Preferably, a chute C is provided below the surface of the sealing piece A, a guiding block A is arranged below the outer wall on one side of the sealing piece A, and the outer wall of the guiding block A is slidably connected to the inside of the chute A.

[0010] Preferably, a top plate A is installed on the outer wall on one side of the guiding block A, a guiding column A is installed at the bottom of the top plate A, and the outer wall of the guiding column A is slidably connected to the inner wall of the guiding hole A.

[0011] Preferably, a limiting ring A is arranged at the bottom end of the guiding column A, and a compression spring A is arranged above the outer wall of the guiding column A.

[0012] Preferably, a top plate B is installed on the outer wall on one side of the guiding block B, a guiding column B is installed at the bottom of the top plate B, a limiting ring B is arranged at the bottom end of the guiding column B, and a compression spring B is arranged above the outer wall of the guiding column B.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] By correspondingly installing the inner and outer sides of the rotary air preheater cantilever rotor frame on the sealing piece A and the sealing piece B, and docking the sealing piece A in the chute A on the rotor frame in a sliding manner by the guiding block A, and docking the sealing piece B in the chute B on the folding angle plate in a sliding manner by the guiding block B, and matching the guiding block A and the guiding block B with the compression spring A and the compression spring B, and according to the initial state of the compression spring A and the compression spring B being in a compressed state, the compressed compression spring A and compression spring B in the compressed state ensure that the tops of the sealing piece A and the sealing piece B are in contact with the lower part of the sector plate. When the rotor frame is deformed by heat, the whole tilts into a triangular state along with the rotor frame. At this time, the compression spring A and the compression spring B are affected by the change of the rotor frame, and after being compressed, they rebound, pushing the sealing piece A and the sealing piece B to keep in contact with the bottom of the sector plate, realizing its constant adaptive sealing effect, and trying to avoid the generation of gaps between the rotor part and the sector plate part, thereby preventing the air leakage of the rotary air preheater. The sealing performance of the rotary air preheater is effectively improved, and the use effect of the rotary air preheater is indirectly and effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall structural schematic diagram provided by the present utility model;

[0016] Figure 2 is the partial structural side view sectional schematic diagram provided by the present utility model;

[0017] Figure 3 is the structural schematic diagram of the sealing piece A provided by the present utility model;

[0018] Figure 4 is the structural schematic diagram of the sealing piece B provided by the present utility model;

[0019] Figure 5 This is a three-dimensional schematic diagram of a partial structure provided by the present utility model.

[0020] In the figure: 1. Central cylinder; 101. Sector plate; 2. Rotor frame; 201. Slide groove A; 202. Partition plate A; 3. Angle folding plate; 301. Guide hole A; 302. Slide groove B; 303. Guide plate; 304. Guide hole B; 305. Partition plate B; 4. Sealing piece A; 401. Slide groove C; 402. Guide block A; 403. Top plate A; 404. Guide post A; 405. Limit ring A; 406. Compression spring A; 5. Sealing piece B; 501. Slide groove D; 502. Guide block B; 503. Top plate A; 504. Guide post B; 505. Limit ring B; 506. Compression spring B. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] The present utility model provides the following technical solutions: A rotary air preheater cantilever constant adaptive sealing device. Please refer to Figures 1-5 , including a rotary air preheater, the rotary air preheater includes a central cylinder 1, a sector plate 101 is installed above the outer wall of the central cylinder 1, a rotor frame 2 is installed below the outer wall of the central cylinder 1, a slide groove A 201 is opened above the surface of the rotor frame 2, and a partition plate A 202 is installed on one outer wall of the rotor frame 2;

[0023] An angle folding plate 3 is installed on one outer wall of the rotor frame 2. A guide hole A 301 is opened below the surface of the angle folding plate 3, a slide groove B 302 is opened above one side surface of the angle folding plate 3, a guide plate 303 is installed above the other outer wall of the angle folding plate 3, a guide hole B 304 is opened on the surface of the guide plate 303, and a partition plate B 305 is installed on one outer wall of the angle folding plate 3. The partition plate A 202 is correspondingly arranged on the outer wall of the rotor frame 2 at the outer wall of the central cylinder 1 of the rotary air preheater, and the angle folding plate 3 and the partition plate B 305 are correspondingly installed on the other outer wall, so that the three of them are locked and fixed by bolts for fastening;

[0024] On the outer wall of the other side of the rotor frame 2, a sealing piece A4 is installed. Below the surface of the sealing piece A4, a chute C401 is provided. Below the outer wall of one side of the sealing piece A4, a guiding block A402 is arranged. The outer wall of the guiding block A402 is slidably connected to the inside of the chute A201. On the outer wall of one side of the guiding block A402, a top plate A403 is installed. At the bottom of the top plate A403, a guiding column A404 is installed. The outer wall of the guiding column A404 is slidably connected to the inner wall of the guiding hole A301. At the bottom end of the guiding column A404, a limiting ring A405 is provided. Above the outer wall of the guiding column A404, a compression spring A406 is arranged. The sealing piece A4 is installed between the partition plate A202 and the rotor frame 2. According to the sliding connection between the chute C401 on the sealing piece A4 and the outer wall of the bolt, there is a certain micro-gap between the partition plate A202 and the rotor frame 2, so that the sealing piece A4 can slide up and down smoothly between the partition plate A202 and the rotor frame 2. At the same time, it is necessary to rotatably connect the sealing piece A4 in the direction of the inside of the rotary air preheater to the rotor frame 2, forming a state where the tail end is stationary and the front end can swing up and down. The chute C401 part needs not to affect the swing of the sealing piece A4 in the arc state. By sliding the sealing piece A4 onto the chute A201 on the rotor frame 2 through the guiding block A402, and sliding the top plate A403 on the guiding block A402 onto the guiding hole A301 on the folding plate 3 through the guiding column A404. According to the compression spring A406 on the outer wall of the guiding column A404 being in a compressed state, the compressed compression spring A406 in the compressed state ensures that the top of the sealing piece A4 contacts the lower part of the sector plate 101;

[0025] On one side outer wall of the rotor frame 2, a sealing piece B5 is installed. Below the surface of the sealing piece B5, a chute D501 is provided. Above one side outer wall of the sealing piece B5, a guiding block B502 is installed. The outer wall of the guiding block B502 is slidably connected to the inner wall of the chute B302. On one side outer wall of the guiding block B502, a top plate B503 is installed. At the bottom of the top plate B503, a guiding column B504 is installed. At the bottom end of the guiding column B504, a limiting ring B505 is provided. Above the outer wall of the guiding column B504, a compression spring B506 is provided. The installation method of the sealing piece B5 is the same as that of the sealing piece A4. The guiding block B502 on the sealing piece B5 is slidably butted in the chute B302 on the folding plate 3. According to the top plate B503 on the guiding block B502, it is slidably butted in the guiding hole B304 on the guiding plate 303 with the guiding column B504. Then, according to the compression spring B506 on the guiding column B504 being in a compressed state, the compression spring B506 in the compressed state ensures that the top of the sealing piece B5 contacts the lower part of the sector plate 101. When the rotor frame 2 is deformed by heat, the whole tilts into a triangular state along with the rotor frame 2. At this time, the compression spring A406 and the compression spring B506 are affected by the change of the rotor frame 2. After being compressed, they rebound, pushing the sealing piece A4 and the sealing piece B5 to keep contacting the bottom of the sector plate 101, achieving its constant adaptive sealing effect, and trying to avoid the generation of gaps between the rotor part and the sector plate part, thereby preventing the air leakage of the rotary air preheater from occurring.

[0026] Working principle: When using the present utility model, a partition A202 is correspondingly arranged on the outer wall of the rotor frame 2 at the outer wall of the central cylinder 1 on the rotary air preheater, and a turning plate 3 and a partition B305 are correspondingly installed on the outer wall of the other side, and the three of them are locked and fixed by bolts for fastening. By installing a sealing piece A4 between the partition A202 and the rotor frame 2, and adopting a sliding connection according to the chute C401 on the sealing piece A4 and the outer wall of the bolt, there is a certain micro-gap between the partition A202 and the rotor frame 2, so that the sealing piece A4 can slide up and down between the partition A202 and the rotor frame 2. At the same time, the sealing piece A4 needs to be rotatably connected to the rotor frame 2 in the direction inside the rotary air preheater, forming a state where the tail end is stationary and the front end can swing up and down. The chute C401 part needs not to affect the swing of the sealing piece A4 in the arc state. The sealing piece A4 is slidably butted on the chute A201 on the rotor frame 2 by a guiding block A402, and the top plate A403 on the guiding block A402 is slidably butted on the guiding hole A301 on the turning plate 3 by a guiding column A404. According to the compression spring A406 on the outer wall of the guiding column A404 being in a compressed state, the compressed compression spring A406 in the compressed state ensures that the top of the sealing piece A4 contacts the lower part of the sector plate 101. The installation method of the sealing piece B5 is the same as that of the sealing piece A4. The guiding block B502 on the sealing piece B5 is slidably butted in the chute B302 on the turning plate 3. According to the top plate B503 on the guiding block B502 being slidably butted in the guiding hole B304 on the guiding plate 303 by a guiding column B504, and then according to the compression spring B506 on the guiding column B504 being in a compressed state, the compressed compression spring B506 in the compressed state ensures that the top of the sealing piece B5 contacts the lower part of the sector plate 101. When the rotor frame 2 is deformed by heat, the whole tilts into a triangular state along with the rotor frame 2. At this time, the compression spring A406 and the compression spring B506 are affected by the change of the rotor frame 2, and after being compressed, they rebound, pushing the sealing piece A4 and the sealing piece B5 to keep contacting the bottom of the sector plate 101, realizing its constant adaptive sealing effect, trying to avoid the generation of gaps between the rotor part and the sector plate part, thereby preventing the air leakage of the rotary air preheater. The sealing performance of the rotary air preheater is effectively improved, and the use effect of the rotary air preheater is also indirectly and effectively improved.

[0027] Although the present utility model has been described above with reference to the embodiments, various improvements can be made thereto and components thereof can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed by the present utility model can be combined with each other in any way, and the exhaustive description of these combinations is not given in this specification only for the consideration of saving space and resources. Therefore, the present utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A rotary air preheater cantilever constant adaptive sealing device, comprising a rotary air preheater, wherein the rotary air preheater comprises a central tube (1), a sector plate (101) is installed above the outer wall of the central tube (1), and is characterized in that: A rotor frame (2) is installed below the outer wall of the central tube (1), and a slide groove A (201) is provided above the surface of the rotor frame (2); A folded angle plate (3) is installed on the outer wall of one side of the rotor frame (2); a guide hole A (301) is opened below the surface of the folded angle plate (3); a slide groove B (302) is opened above one side of the surface of the folded angle plate (3); a sealing sheet A (4) is installed on the outer wall of the other side of the rotor frame (2); and a sealing sheet B (5) is installed on the outer wall of one side of the rotor frame (2).

2. A rotary air preheater cantilever constant adaptive sealing device according to claim 1, characterized in that: A partition plate A (202) is installed on one side outer wall of the rotor frame (2).

3. The rotary air preheater cantilever constant adaptive sealing device according to claim 1, characterized in that: A guide plate (303) is installed above the outer wall of the other side of the angled plate (3), a guide hole B (304) is opened on the surface of the guide plate (303), and a partition plate B (305) is installed on the outer wall of one side of the angled plate (3).

4. The rotary air preheater cantilever constant adaptive sealing device according to claim 1, characterized in that: A slide groove C (401) is provided below the surface of the sealing sheet A (4), and a guide block A (402) is provided below the outer wall of one side of the sealing sheet A (4), and the outer wall of the guide block A (402) is slidably connected to the inside of the slide groove A (201).

5. A rotary air preheater cantilever constant adaptive sealing device according to claim 4, characterized in that: A top plate A (403) is installed on one side outer wall of the guide block A (402), a guide column A (404) is installed at the bottom of the top plate A (403), and the outer wall of the guide column A (404) is slidably connected to the inner wall of the guide hole A (301).

6. A rotary air preheater cantilever constant adaptive sealing device according to claim 5, characterized in that: A limiting ring A (405) is arranged at the bottom end of the guide column A (404), and a compression spring A (406) is arranged above the outer wall of the guide column A (404).

7. The rotary air preheater cantilever constant adaptive sealing device according to claim 1, characterized in that: A slide groove D (501) is provided below the surface of the sealing sheet B (5), and a guide block B (502) is installed above the outer wall of one side of the sealing sheet B (5), and the outer wall of the guide block B (502) is slidably connected to the inner wall of the slide groove B (302).

8. A rotary air preheater cantilever constant adaptive sealing device according to claim 7, characterized in that: A top plate B (503) is installed on one side outer wall of the guide block B (502), a guide column B (504) is installed at the bottom of the top plate B (503), a limit ring B (505) is arranged at the bottom end of the guide column B (504), and a compression spring B (506) is arranged above the outer wall of the guide column B (504).

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