Device for increasing local temperature of heat accumulator of heat exchanger

Abstract

The utility model belongs to the technical field of industrial heat exchangers, in particular to a device for increasing local temperature of a heat accumulator of a heat exchanger, which comprises a heat exchanger body, a cold medium inlet channel is arranged on one side of the outer wall of the bottom of the heat exchanger body, and an annular baffle C, an annular baffle B and an annular baffle A are respectively arranged in the cold medium inlet channel. An outer pipe, an inner pipe and a connecting column are welded to the outer walls of one sides of the annular baffle C, the annular baffle B and the annular baffle A correspondingly, and first bevel gears are fixedly connected to the outer walls of one ends of the outer pipe, the inner pipe and the connecting column correspondingly. When the heat accumulator is blocked by substances such as ammonium hydrogen sulfate and the like, accurate zoning control of cold medium flow can be achieved through manual adjustment of the grip, local cold medium flow is reduced, local temperature of the heat accumulator is increased in a targeted mode, the blocking problem is effectively solved, and the device is simple in structure, convenient to operate and low in cost. Only a baffle and a transmission part need to be additionally arranged on a cold medium inlet channel, complex transformation is not needed, and operation is flexible.

Description

Technical Field

[0001] This utility model relates to the field of industrial heat exchanger technology, and in particular to a device for increasing the local temperature of the heat exchanger's accumulator. Background Technology

[0002] Rotary heat exchangers are highly efficient heat exchange devices primarily used to recover waste heat from industrial processes, improving energy efficiency. The heat exchange process involves hot and cold fluids flowing alternately through a rotating heat storage medium (such as ceramic or metal packing) to achieve heat transfer. The heat storage medium rotates slowly; the hot fluid heats the medium, and the cold fluid absorbs heat as it flows past. The heat storage medium is the core component, responsible for storing and releasing heat. The outer shell houses the heat storage medium and guides fluid flow. The drive unit drives the rotation of the heat storage medium. The sealing system prevents fluid leakage. Heat recovery efficiency is high, reaching over 90%. It is highly adaptable to various industrial environments. Applications include: Power industry (for boiler flue gas waste heat recovery); Chemical industry (for recovering heat emitted from reactors); Steel industry (for recovering waste heat from blast furnaces and heating furnaces); Building materials industry (for waste heat recovery from cement kilns and glass kilns).

[0003] Currently, the temperature of the heat storage medium in rotary heat exchangers is generally within the design range. There are no measures to increase the local temperature of the heat storage plates. If the heat storage medium is blocked by ammonium bisulfate, the temperature can be locally increased to pyrolyze it, thus alleviating or eliminating the blockage. Therefore, existing devices suffer from problems such as complex structure, large operational workload, and lack of control. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a device for increasing the local temperature of the heat storage body in a heat exchanger, which overcomes the shortcomings of the prior art and effectively solves the problem that rotary heat exchangers do not have measures to increase the local temperature of the heat storage plates.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for increasing the local temperature of a heat exchanger regenerator includes a heat exchanger body. A cold medium inlet channel is provided on one side of the bottom outer wall of the heat exchanger body. An annular baffle C, an annular baffle B, and an annular baffle A are respectively provided inside the cold medium inlet channel. An outer tube, an inner tube, and a connecting column are respectively welded to one side of the outer wall of the annular baffle C, annular baffle B, and annular baffle A. A first bevel gear is fixedly connected to one end of the outer wall of the outer tube, the inner tube, and the connecting column. A second bevel gear meshes with the outer wall of the first bevel gear. A handle is welded to one side of the outer wall of the second bevel gear.

[0007] Preferably, the annular baffle B is located between the annular baffle C and the annular baffle A, and the inner tube is rotatably connected to the inner wall of the outer tube, and the connecting column is rotatably connected to the inner wall of the inner tube.

[0008] Preferably, a connecting plate is welded to the outer wall of one side of the cold medium inlet channel, and the handle is rotatably connected to the inner wall of the connecting plate via a bearing.

[0009] Preferably, the bottom of the inner walls on both sides of the cold medium inlet channel is welded with adjacent horizontal limiting plates, and one inner wall of the cold medium inlet channel is welded with a vertical limiting plate.

[0010] Preferably, a cold medium outlet channel is provided on one side of the top outer wall of the heat exchanger body, and a hot medium inlet channel is provided on the other side of the top outer wall of the heat exchanger body, and a hot medium outlet channel is provided on the other side of the bottom outer wall of the heat exchanger body.

[0011] Preferably, a support rod is welded to the inner wall of the heat medium outlet channel, and temperature sensors distributed at equal intervals are fixedly connected to the outer wall of the support rod. The temperature sensors include temperature measuring point one, temperature measuring point two, and temperature measuring point three, and temperature measuring point one, temperature measuring point two, and temperature measuring point three correspond one-to-one with annular baffle C, annular baffle B, and annular baffle A, respectively.

[0012] Preferably, a support frame is welded to the outer wall of the heat exchanger body, and a drive motor is fixedly connected to the top outer wall of the support frame by bolts. The output shaft of the drive motor is fixedly connected to a heat storage body, and the heat storage body is located inside the heat exchanger body.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The device designed in this paper is for increasing the local temperature of the heat exchanger accumulator. When the accumulator is blocked by substances such as ammonium bisulfate, the flow rate of the cold medium can be precisely controlled by manual adjustment via a handle to reduce the local flow rate of the cold medium, thereby specifically increasing the local temperature of the accumulator and effectively solving the blockage problem. The device has a simple structure and only requires the addition of a baffle and transmission components to the cold medium inlet channel. No complicated modifications are required, and the operation is flexible.

[0015] 2. The device for increasing the local temperature of the heat exchanger's heat storage medium in this design uses multiple temperature sensors to monitor the temperature changes in the heat medium outlet channel in real time. Temperature measuring points one, two, and three correspond to the control areas of annular baffles C, B, and A, respectively, forming a closed-loop feedback. The baffles can adjust their opening degree according to the temperature signal to ensure that the temperature is stable at the set value and maintained for the set time. Ultimately, this achieves gradual heating of the three areas, reducing manual operation and avoiding damage to the heat storage medium caused by sudden temperature rises, thus improving safety and reliability. Attached Figure Description

[0016] Figure 1 This invention provides a schematic diagram of the overall structure of a device for increasing the local temperature of a heat exchanger's regenerator. Figure 1 ;

[0017] Figure 2 This invention provides a schematic diagram of the overall structure of a device for increasing the local temperature of a heat exchanger's regenerator. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the structure of the annular baffle A, annular baffle B, and annular baffle C of the device for raising the local temperature of the heat exchanger accumulator proposed in this utility model when rotated 90°.

[0019] Figure 4 This is an enlarged schematic diagram of part A of the device for raising the local temperature of a heat exchanger accumulator proposed in this utility model.

[0020] Figure 5 This is a schematic diagram of the internal connection structure of the heat medium outlet channel of a device for increasing the local temperature of a heat exchanger accumulator, as proposed in this utility model.

[0021] Figure 6 This is a schematic diagram of the structure of the annular baffle A, annular baffle B, and annular baffle C when they are separated, which is part of the device for raising the local temperature of the heat exchanger accumulator proposed in this utility model.

[0022] In the diagram: 1. Heat exchanger body; 2. Cold medium inlet channel; 3. Heat storage body; 4. Annular baffle C; 5. Annular baffle B; 6. Annular baffle A; 7. Outer tube; 8. Inner tube; 9. Connecting column; 10. First bevel gear; 11. Second bevel gear; 12. Handle; 13. Connecting plate; 14. Lateral limiting plate; 15. Vertical limiting plate; 16. Cold medium outlet channel; 17. Hot medium inlet channel; 18. Hot medium outlet channel; 19. Support rod; 20. Temperature sensor; 21. Support frame; 22. Drive motor. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Reference Figures 1-6Example 1: A device for increasing the local temperature of a heat exchanger's heat storage body includes a heat exchanger body 1. A cold medium inlet channel 2 is provided on one side of the bottom outer wall of the heat exchanger body 1. Annular baffles C4, B5, and A6 are respectively provided inside the cold medium inlet channel 2. An outer tube 7, an inner tube 8, and a connecting column 9 are respectively welded to the outer wall of one side of the annular baffles C4, B5, and A6. A first bevel gear 10 is fixedly connected to the outer wall of one end of the outer tube 7, the inner tube 8, and the connecting column 9. A second bevel gear 11 meshes with the outer wall of the first bevel gear 10. A handle 12 is welded to the outer wall of one side of the second bevel gear 11.

[0025] The annular baffle B5 is located between the annular baffle C4 and the annular baffle A6, and the inner tube 8 is rotatably connected to the inner wall of the outer tube 7, and the connecting column 9 is rotatably connected to the inner wall of the inner tube 8.

[0026] Annular baffles C4, B5, and A6 are sequentially installed in the cold medium inlet channel 2. These three baffles are connected in series via an outer pipe 7, an inner pipe 8, and a connecting column 9, and are all meshed with a first bevel gear 10 and a second bevel gear 11. When the handle 12 is rotated, the second bevel gear 11 drives the first bevel gear 10 to rotate the corresponding baffle to adjust the opening. Annular baffle B5 is located between annular baffles C4 and A6. All three can rotate independently, achieving zoned control. Annular baffle A6 is activated first, closing at a speed of 0.5% / s until the temperature measuring point reaches the set value and maintains it for the set time. Subsequently, annular baffles B5 and C4 repeat this process sequentially, achieving staged heating and ultimately clearing the blockage.

[0027] In this embodiment, when the heat storage body 3 is blocked by substances such as ammonium bisulfate, the flow rate of the cold medium can be precisely controlled by manual adjustment through the handle 12, reducing the local flow rate of the cold medium and thus specifically increasing the local temperature of the heat storage body 3, effectively solving the blockage problem. This device has a simple structure, requiring only the addition of a baffle and transmission components to the cold medium inlet channel 2, without complex modifications, and is flexible in operation.

[0028] In embodiment 2, a cold medium outlet channel 16 is provided on one side of the top outer wall of the heat exchanger body 1, and a hot medium inlet channel 17 is provided on the other side of the top outer wall of the heat exchanger body 1. A hot medium outlet channel 18 is provided on the other side of the bottom outer wall of the heat exchanger body 1. A support rod 19 is welded to the inner wall of the hot medium outlet channel 18, and temperature sensors 20 distributed at equal intervals are fixedly connected to the outer wall of the support rod 19. The temperature sensors 20 include temperature measuring point 1, temperature measuring point 2, and temperature measuring point 3, and temperature measuring point 1, temperature measuring point 2, and temperature measuring point 3 correspond one-to-one with annular baffle C4, annular baffle B5, and annular baffle A6, respectively.

[0029] The hot and cold media enter and exit through the hot media inlet channel 17 and the cold media outlet channel 16, respectively, forming a complete heat exchange cycle. A support rod 19 is installed inside the hot media outlet channel 18, and three temperature sensors 20 are mounted on the support rod 19, corresponding to the areas controlled by the three baffles. The temperature data is fed back to the control system.

[0030] In this embodiment, multiple temperature sensors 20 monitor the temperature change of the heat medium outlet channel 18 in real time. Temperature measuring point 1, temperature measuring point 2, and temperature measuring point 3 correspond to the control areas of annular baffle C4, annular baffle B5, and annular baffle A6, respectively, forming a closed-loop feedback. The baffles can adjust their opening according to the temperature signal to ensure that the temperature is stable at the set value and maintained for the set time. Ultimately, the three areas are heated step by step, which reduces the amount of manual operation and avoids damage to the heat storage body 3 caused by a sudden temperature rise, thereby improving safety and reliability.

[0031] A connecting plate 13 is welded to one side of the outer wall of the cold medium inlet channel 2, and the handle 12 is rotatably connected to the inner wall of the connecting plate 13 via a bearing. Adjacent horizontal limiting plates 14 are welded to the bottom of the inner walls on both sides of the cold medium inlet channel 2, and a vertical limiting plate 15 is welded to one side of the inner wall of the cold medium inlet channel 2.

[0032] The cold medium inlet channel 2 is internally welded with a horizontal limiting plate 14 and a vertical limiting plate 15 to limit the maximum rotation angle of the annular baffle C4, annular baffle B5, and annular baffle A6, so as to avoid excessive closing or opening. The connecting plate 13 is rotatably connected to the handle 12 through a bearing to ensure smooth rotation.

[0033] A support frame 21 is welded to the outer wall of the heat exchanger body 1, and a drive motor 22 is fixedly connected to the top outer wall of the support frame 21 by bolts. The output shaft of the drive motor 22 is fixedly connected to a heat storage body 3, and the heat storage body 3 is located inside the heat exchanger body 1.

[0034] The drive motor 22 is fixed to the outside of the heat exchanger body 1 by the support frame 21. The output shaft of the drive motor 22 is connected to the heat storage body 3, and drives the heat storage body 3 to rotate slowly to balance the heat distribution.

[0035] Working principle:

[0036] Cold medium flow rate adjustment: Rotating the handle 12 drives the first bevel gear 10 and the second bevel gear 11 to rotate, causing the annular baffles A6, B5, and C4 to rotate, gradually reducing the cold medium flow rate. The lateral limiting plate 14 and the vertical limiting plate 15 of the cold medium inlet channel 2 ensure that the baffle opening is precise and controllable.

[0037] Temperature rise and monitoring: After the flow rate of the cold medium decreases, the heat storage body 3 in the corresponding area heats up due to the continuous heating by the hot medium. The temperature sensor 20 of the hot medium outlet channel 18 monitors the temperature in real time and feeds the data back to the control system. If the temperature is lower than the set value, the baffle remains closed; if the set value is reached, the opening is maintained and timing begins.

[0038] Phased unblocking: The system sequentially controls annular baffles A6, B5, and C4. After heating up each area, the system automatically closes the current baffle and switches to the next area, until all three areas are cleared. The rotation of the heat storage body 3 ensures even heat distribution and prevents localized overheating.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for increasing the local temperature of a heat exchanger regenerator, comprising a heat exchanger body (1), characterized in that, A cold medium inlet channel (2) is provided on one side of the bottom outer wall of the heat exchanger body (1), and annular baffles C (4), B (5), and A (6) are respectively provided inside the cold medium inlet channel (2). An outer tube (7), an inner tube (8), and a connecting column (9) are respectively welded to the outer wall of one side of the annular baffles C (4), B (5), and A (6). A first bevel gear (10) is fixedly connected to the outer wall of one end of the outer tube (7), the inner tube (8), and the connecting column (9). A second bevel gear (11) meshes on the outer wall of the first bevel gear (10), and a handle (12) is welded to the outer wall of one side of the second bevel gear (11).

2. The device for raising the local temperature of a heat exchanger regenerator according to claim 1, characterized in that, The annular baffle B (5) is located between the annular baffle C (4) and the annular baffle A (6), and the inner tube (8) is rotatably connected to the inner wall of the outer tube (7), and the connecting column (9) is rotatably connected to the inner wall of the inner tube (8).

3. The device for raising the local temperature of a heat exchanger regenerator according to claim 1, characterized in that, A connecting plate (13) is welded to the outer wall of one side of the cold medium inlet channel (2), and the handle (12) is rotatably connected to the inner wall of the connecting plate (13) through a bearing.

4. The device for raising the local temperature of a heat exchanger regenerator according to claim 1, characterized in that, The bottom of the inner walls on both sides of the cold medium inlet channel (2) is welded with adjacent horizontal limiting plates (14), and the inner wall on one side of the cold medium inlet channel (2) is welded with a vertical limiting plate (15).

5. The device for raising the local temperature of a heat exchanger regenerator according to claim 1, characterized in that, A cold medium outlet channel (16) is provided on one side of the top outer wall of the heat exchanger body (1), and a hot medium inlet channel (17) is provided on the other side of the top outer wall of the heat exchanger body (1). A hot medium outlet channel (18) is provided on the other side of the bottom outer wall of the heat exchanger body (1).

6. The device for raising the local temperature of a heat exchanger regenerator according to claim 5, characterized in that, A support rod (19) is welded to the inner wall of the heat medium outlet channel (18), and temperature sensors (20) are fixedly connected to the outer wall of the support rod (19) at equal distances. The temperature sensor (20) includes temperature measuring point one, temperature measuring point two and temperature measuring point three, and temperature measuring point one, temperature measuring point two and temperature measuring point three correspond one-to-one with annular baffle C (4), annular baffle B (5) and annular baffle A (6) respectively.

7. The device for raising the local temperature of a heat exchanger regenerator according to claim 1, characterized in that, A support frame (21) is welded to the outer wall of the heat exchanger body (1), and a drive motor (22) is fixedly connected to the top outer wall of the support frame (21) by bolts. The output shaft of the drive motor (22) is fixedly connected to a heat storage body (3), and the heat storage body (3) is located inside the heat exchanger body (1).

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