Assembled air preheater structure

Abstract

The utility model discloses a split mounting type air preheater structure, which belongs to the field of air preheaters and comprises a connecting cylinder, cover plates are arranged on two sides of the connecting cylinder, connecting pipes are arranged on the inner sides of the cover plates, one side of each connecting pipe is communicated with a hollow plate, one side of each hollow plate is communicated with a heat exchange pipe, and the heat exchange pipe is communicated with a heat exchanger. Shells are fixedly connected to the front face and the back face of the connecting cylinder, fixing rods are connected to the two sides of each shell in an inserted mode, and one side of each fixing rod is fixedly connected with a cover plate; when the heat exchange tube needs to be cleaned, the connecting disc is pulled, the connecting disc drives the pull rod to move, the pull rod drives the connecting plate to move, the connecting plate drives the plug pin to move, and after the plug pin is far away from the fixing rod, the cover plate can be pulled outwards and drives the fixing rod to move, so that the fixing rod is separated from the shell, and meanwhile, the cover plate is far away from the connecting tube; and then the heat exchange tube can be taken out to be cleaned, and dust attached to the surface of the heat exchange tube is prevented from affecting work.

Description

Technical Field

[0001] The utility model belongs to the technical field of air preheaters, and in particular relates to an assembled air preheater structure. Background Art

[0002] An air preheater is a heating surface that preheats the flue gas in the tail flue of the boiler to a certain temperature through the internal heat sink. It is a device used to improve the heat exchange performance of the boiler and reduce energy consumption. Air preheaters are generally divided into three types: plate type, rotary type and tube type. The working principle of the air preheater is introduced using the rotary type as an example.

[0003] Existing air preheaters are all integrated during use. It is very inconvenient when the internal components of the air preheater need to be cleaned, which makes the cleaning process time-consuming and laborious, thus affecting the use of the air preheater. For this reason, we propose an assembled air preheater structure. Utility Model Content

[0004] The purpose of the utility model is to provide an assembled air preheater structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an assembled air preheater structure, comprising a connecting tube, cover plates are provided on both sides of the connecting tube, a connecting pipe is provided on the inner side of the cover plate, one side of the connecting pipe is connected to a hollow plate, one side of the hollow plate is connected to a heat exchange tube, the front and back sides of the connecting tube are fixedly connected to a shell, fixing rods are plugged into both sides of the shell, one side of the fixing rod is fixedly connected to the cover plate, one side of the fixing rod is plugged into a fixing block, one side of the fixing block is fixedly connected to the shell, the other side of the fixing block contacts with a connecting plate, one side of the connecting plate is fixedly connected to a latch, one side of the latch is plugged into the fixing rod, the other side of the connecting plate is fixedly connected to a spring, one side of the spring is fixedly connected to the shell.

[0006] By adopting the above scheme, when the heat exchange tube needs to be cleaned, the connecting plate is pulled, the connecting plate drives the pull rod to move, the pull rod drives the connecting plate to move, the connecting plate drives the pin to move, and after the pin is away from the fixed rod, the cover plate can be pulled outward, the cover plate drives the fixed rod to move, so that the fixed rod is separated from the shell, and at the same time the cover plate is away from the connecting tube, and then the heat exchange tube can be taken out for cleaning to avoid dust adhering to the surface of the heat exchange tube and affecting the work.

[0007] As a preferred implementation of the assembled air preheater structure, a sealing ring is fixedly connected to one side of the connecting pipe, and one side of the sealing ring is in contact with the cover plate.

[0008] By adopting the above solution and providing a sealing ring, a good sealing effect is achieved, thereby preventing the gas flowing in the inner cavity of the heat exchange tube from escaping.

[0009] As a preferred implementation of the assembled air preheater structure, a connecting pin is inserted into the inner side of the cover plate, and one side of the connecting pin is fixedly connected to the hollow plate.

[0010] By adopting the above solution, connecting pins are provided to facilitate the positioning of the hollow plate, thereby preventing the hollow plate from sliding automatically during operation.

[0011] As a preferred embodiment of the assembled air preheater structure, one side of the cover plate is connected to a hollow tube, the right side of the top of the connecting tube is connected to a smoke inlet pipe, and the bottom of the connecting tube and the left side located at the central axis are connected to a smoke outlet pipe.

[0012] By adopting the above scheme, a smoke inlet pipe and a smoke outlet pipe are provided, so that the smoke can flow easily, thereby facilitating the operation of the air preheater.

[0013] As a preferred embodiment of the assembled air preheater structure, support plates are fixedly connected to both sides of the bottom of the connecting tube, a bottom plate is fixedly connected to the bottom of the support plate, and a mounting hole is opened on the top of the bottom plate.

[0014] By adopting the above solution, by providing a support plate, a bottom plate and a mounting hole, it is convenient to limit the connection tube, thereby making the air preheater stable during operation.

[0015] As a preferred implementation of the assembled air preheater structure, the inner cavity of the connecting plate is slidably connected with a sliding rod, and the front and back sides of the sliding rod are fixedly connected to the shell.

[0016] By adopting the above solution, the sliding rod is provided to stabilize the operation of the connecting plate and provide balanced support for the connecting plate.

[0017] As a preferred implementation of the assembled air preheater structure, a pull rod is inserted into one side of the shell, one side of the pull rod is fixedly connected to the connecting plate, and the other side of the pull rod is fixedly connected to the connecting disk.

[0018] By adopting the above solution, by arranging the pull rod and the connecting plate, the position of the connecting plate can be easily adjusted, thereby facilitating the loading and unloading work.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. When the heat exchange tube needs to be cleaned, the utility model pulls the connection plate, the connection plate drives the pull rod to move, the pull rod drives the connection plate to move, the connection plate drives the latch to move, after the latch is away from the fixed rod, the cover plate can be pulled outward, the cover plate drives the fixed rod to move, so that the fixed rod is separated from the shell, and at the same time the cover plate is away from the connection tube, and then the heat exchange tube can be taken out for cleaning to avoid dust adhering to the surface of the heat exchange tube and affecting the work.

[0021] 2. The utility model provides a sealing ring to achieve a good sealing effect, thereby preventing the gas flowing in the inner cavity of the heat exchange tube from escaping. By providing a connecting pin, it is convenient to limit the hollow plate to prevent the hollow plate from sliding automatically during operation. By providing a smoke inlet pipe and a smoke outlet pipe, it is convenient for smoke to circulate, thereby facilitating the operation of the air preheater. By providing a support plate, a bottom plate and a mounting hole, it is convenient to limit the connecting tube, thereby making the air preheater stable during operation. By providing a sliding rod, the operation of the connecting plate is stabilized and the connecting plate is balanced and supported. By providing a pull rod and a connecting plate, the position of the connecting plate can be easily adjusted, thereby facilitating loading and unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the shell of the utility model;

[0024] Figure 3 This is a schematic diagram of the heat exchange tube structure of the utility model.

[0025] In the figure: 1. connecting tube; 2. cover plate; 3. connecting pipe; 4. hollow plate; 5. heat exchange tube; 6. hollow tube; 7. shell; 8. fixing rod; 9. fixing block; 10. connecting plate; 11. sliding rod; 12. latch; 13. spring; 14. flue gas inlet pipe; 15. flue gas outlet pipe; 16. support plate; 17. bottom plate; 18. mounting hole; 19. pull rod; 20. sealing ring; 21. connecting plate. DETAILED DESCRIPTION

[0026] See also Figure 1-3A structure of an assembled air preheater includes a connecting tube 1, both sides of the connecting tube 1 are provided with a cover plate 2, the inner side of the cover plate 2 is provided with a connecting pipe 3, one side of the connecting pipe 3 is connected with a hollow plate 4, one side of the hollow plate 4 is connected with a heat exchange tube 5, the front and back sides of the connecting tube 1 are fixedly connected with a shell 7, both sides of the shell 7 are plugged with a fixing rod 8, one side of the fixing rod 8 is fixedly connected with the cover plate 2, one side of the fixing rod 8 is plugged with a fixing block 9, one side of the fixing block 9 is fixedly connected with the shell 7, the other side of the fixing block 9 contacts with a connecting plate 10, one side of the connecting plate 10 is fixedly connected with a plug 12, the plug 12 One side is plugged into the fixing rod 8, and the other side of the connecting plate 10 is fixedly connected with a spring 13, and one side of the spring 13 is fixedly connected to the shell 7. When the heat exchange tube 5 needs to be cleaned, pull the connecting plate 21, the connecting plate 21 drives the pull rod 19 to move, the pull rod 19 drives the connecting plate 10 to move, and the connecting plate 10 drives the pin 12 to move. After the pin 12 is away from the fixing rod 8, the cover plate 2 can be pulled outward, and the cover plate 2 drives the fixing rod 8 to move, so that the fixing rod 8 is separated from the shell 7, and at the same time, the cover plate 2 will be away from the connecting tube 3. Then the heat exchange tube 5 can be taken out for cleaning to avoid dust adhering to the surface of the heat exchange tube 5 and affecting the work.

[0027] See Figure 3 As shown, a sealing ring 20 is fixedly connected to one side of the connecting pipe 3, and one side of the sealing ring 20 is in contact with the cover plate 2. By setting the sealing ring 20, a good sealing effect is achieved to prevent the gas flowing in the inner cavity of the heat exchange tube 5 from escaping. A connecting pin is inserted into the inner side of the cover plate 2, and one side of the connecting pin is fixedly connected to the hollow plate 4. By setting the connecting pin, it is convenient to limit the hollow plate 4 to prevent the hollow plate 4 from sliding by itself during operation.

[0028] See Figure 1 As shown, one side of the cover plate 2 is connected to a hollow tube 6, the right side of the top of the connecting tube 1 is connected to a smoke inlet pipe 14, and the bottom of the connecting tube 1 and the left side located at the central axis are connected to a smoke outlet pipe 15. By arranging the smoke inlet pipe 14 and the smoke outlet pipe 15, it is convenient for the smoke to circulate, and thus it is convenient for the air preheater to work. Support plates 16 are fixedly connected to both sides of the bottom of the connecting tube 1, and a bottom plate 17 is fixedly connected to the bottom of the support plate 16. A mounting hole 18 is opened on the top of the bottom plate 17. By arranging the support plate 16, the bottom plate 17 and the mounting hole 18, it is convenient to limit the connecting tube 1, so that the air preheater is stable when working.

[0029] See Figure 2As shown, the inner cavity of the connecting plate 10 is slidably connected with a slide rod 11, and the front and back sides of the slide rod 11 are fixedly connected to the shell 7. By setting the slide rod 11, the operation of the connecting plate 10 is stabilized, and the connecting plate 10 is balanced and supported. A pull rod 19 is inserted into one side of the shell 7, and one side of the pull rod 19 is fixedly connected to the connecting plate 10, and the other side of the pull rod 19 is fixedly connected to a connecting disk 21. By setting the pull rod 19 and the connecting disk 21, the position of the connecting plate 10 can be easily adjusted, thereby facilitating loading and unloading.

[0030] During use, when the heat exchange tube 5 needs to be cleaned, pull the connecting plate 21, the connecting plate 21 drives the pull rod 19 to move, the pull rod 19 drives the connecting plate 10 to move, the connecting plate 10 drives the pin 12 to move, and after the pin 12 is away from the fixing rod 8, the cover plate 2 can be pulled outward, the cover plate 2 drives the fixing rod 8 to move, so that the fixing rod 8 is separated from the shell 7, and at the same time, the cover plate 2 will be away from the connecting tube 3, and then the heat exchange tube 5 can be taken out for cleaning to avoid dust adhering to the surface of the heat exchange tube 5 and affecting the work.

Claims

1. An assembled air preheater structure, characterized in that: The invention comprises a connecting tube (1), both sides of the connecting tube (1) are provided with cover plates (2), the inner side of the cover plate (2) is provided with a connecting pipe (3), one side of the connecting pipe (3) is connected to a hollow plate (4), one side of the hollow plate (4) is connected to a heat exchange tube (5), the front and back sides of the connecting tube (1) are fixedly connected to a shell (7), both sides of the shell (7) are plugged with fixing rods (8), one side of the fixing rod (8) is fixedly connected to the cover plate (2), and the heat exchange tube (5) is connected to the hollow plate (4). A fixing block (9) is plugged into one side of the fixing rod (8), one side of the fixing block (9) is fixedly connected to the housing (7), the other side of the fixing block (9) contacts a connecting plate (10), one side of the connecting plate (10) is fixedly connected to a latch (12), one side of the latch (12) is plugged into the fixing rod (8), the other side of the connecting plate (10) is fixedly connected to a spring (13), one side of the spring (13) is fixedly connected to the housing (7).

2. The assembled air preheater structure according to claim 1 is characterized in that: A sealing ring (20) is fixedly connected to one side of the connecting pipe (3), and one side of the sealing ring (20) is in contact with the cover plate (2).

3. The assembled air preheater structure according to claim 1 is characterized in that: A connecting pin is inserted into the inner side of the cover plate (2), and one side of the connecting pin is fixedly connected to the hollow plate (4).

4. The assembled air preheater structure according to claim 1 is characterized in that: One side of the cover plate (2) is connected to a hollow tube (6), the right side of the top of the connecting tube (1) is connected to a smoke inlet pipe (14), and the bottom of the connecting tube (1) and the left side located at the center axis are connected to a smoke outlet pipe (15).

5. The assembled air preheater structure according to claim 1 is characterized in that: Support plates (16) are fixedly connected to both sides of the bottom of the connecting tube (1), a bottom plate (17) is fixedly connected to the bottom of the support plate (16), and a mounting hole (18) is provided at the top of the bottom plate (17).

6. The assembled air preheater structure according to claim 1 is characterized in that: The inner cavity of the connecting plate (10) is slidably connected to a sliding rod (11), and the front and back sides of the sliding rod (11) are fixedly connected to the housing (7).

7. The assembled air preheater structure according to claim 1 is characterized in that: A pull rod (19) is inserted into one side of the housing (7), one side of the pull rod (19) is fixedly connected to a connecting plate (10), and the other side of the pull rod (19) is fixedly connected to a connecting disk (21).

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