Turbulence piece fixing structure, shell-and-tube heat exchanger and slurry cooling device

Abstract

The utility model discloses a turbulence piece fixing structure, a shell-and-tube heat exchanger and a slurry cooling device. The turbulence piece fixing structure comprises a turbulence piece body and a fixing assembly. A connector is arranged on the turbulence piece body, a clamping portion used for being clamped with a heat exchange tube extends out of the end, close to the turbulence piece body, of the connector, and a connecting portion used for being detachably connected with the fixing assembly is arranged at the end, away from the turbulence piece body, of the connector. The utility model further comprises a shell-and-tube heat exchanger comprising the turbulence piece fixing structure and a slurry cooling device comprising the shell-and-tube heat exchanger. The device has the advantages of being simple in structure, reliable in performance, convenient to disassemble and assemble, low in cleaning and maintenance cost and the like.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange technology, and in particular to a turbulent plate fixing structure, a shell-and-tube heat exchanger, and a slurry cooling device. Background Technology

[0002] Shell-and-tube heat exchangers are widely used in various fields, including new energy, petrochemicals, power generation, pharmaceuticals, and food processing. In the battery slurry processing of new energy products, shell-and-tube heat exchangers are frequently used to regulate the slurry to a suitable temperature and ensure slurry quality.

[0003] like Figure 1 As shown: Taking a horizontal shell-and-tube heat exchanger as an example, it mainly consists of a heat exchanger body 1, a front end cap 2, and a rear end cap 3. The battery slurry is fed into the inlet of the front end cap 2, enters the rear end cap 3 through the heat exchange pipe at the bottom of the heat exchanger body 1, and then passes through the heat exchange pipe at the top of the heat exchanger body 1, and finally exits through the outlet of the front end cap 2. Cooling water enters through the inlet, cools the battery slurry through the partition layer on the outer wall of the heat exchange tube, and finally exits through the outlet, thus realizing the entire heat exchange process.

[0004] like Figure 2 As shown, the heat exchanger body 1 mainly consists of a tube sheet 11, a cylinder 12, heat exchange tubes 13, baffles 14, turbulence plates 15, a water inlet 16, a thermal insulation layer 17, and a water outlet 18. The tube sheet 11 and the cylinder 12 are the main supporting structures. The heat exchange tubes 13 isolate the battery slurry from the cooling water, and heat exchange occurs through the heat exchange tubes 13. Multiple baffles 14 are arranged in an alternating pattern, dividing the cooling water channel into a meandering channel, which facilitates full contact between the cooling water and the heat exchange tubes 13, improving cooling efficiency. The thermal insulation layer 17 can reduce the generation of condensate on the outer surface of the heat exchanger body. Among them, the turbulence plates 15 play an important role in improving heat exchange efficiency. The turbulence plates 15 are installed inside the heat exchange tubes 13 and are generally spiral in shape. When the battery slurry passes through the heat exchange tubes 13, the speed of the battery slurry increases due to the guiding effect of the turbulence plates 15, generating turbulence, which makes the battery slurry fully mixed, promotes full heat exchange, improves heat exchange efficiency, and saves operating costs.

[0005] In the field of new energy, to ensure the quality of battery slurry, it is crucial to minimize the entry of metal foreign objects into the slurry. Metal debris generated from equipment wear is the primary source of metal foreign objects, therefore, its generation must be avoided as much as possible. Simultaneously, the equipment design should incorporate mechanisms that prevent metal wear. During heat exchanger operation, the spiral turbulent vanes, impacted by the slurry, easily generate rotational force. If the vanes are not securely fixed, they will rotate inside the heat exchange tubes, and their edges will scrape against the inside of the tubes, generating metal debris. This metal debris can then enter the battery slurry, causing metal foreign object contamination.

[0006] The existing method of fixing turbulence plates mainly uses welding. This method works well in the initial stage of heat exchanger use, but after a period of use, when equipment maintenance is required and the heat exchange tubes are cleaned, the structure cannot directly remove the turbulence plates. The fixing welds of the turbulence plates must be cut off, and then welding must be performed again after cleaning. This method results in low cleaning and maintenance efficiency and high cost. Moreover, improper operation during the cutting and welding process can easily cause equipment damage. The metal debris generated during cutting and the welding slag are difficult to clean, and if not cleaned thoroughly, they can also cause metal contamination.

[0007] To address the existing problems, it is necessary to design a turbulence plate and its fixing structure that is structurally reliable, easy to assemble and disassemble, and has low cleaning and maintenance costs. Utility Model Content

[0008] The purpose of this utility model is to overcome the above-mentioned shortcomings of the prior art and provide a simple structure, low cost, convenient disassembly and assembly, reliable performance, and pollution-free turbulence plate fixing structure, shell-and-tube heat exchanger, and slurry cooling device.

[0009] The technical solution of this utility model is:

[0010] The present invention provides a turbulence plate fixing structure, comprising a turbulence plate body and a fixing component; the turbulence plate body is provided with a connector, the connector extending from the end near the turbulence plate body to a locking part for fitting and connecting with a heat exchange tube, and the connector having a connecting part at the end away from the turbulence plate body for detachable connection with the fixing component.

[0011] Furthermore, the engaging part has a stepped structure, with the connector extending outwards from the end near the turbulence plate body to both sides, engaging with the two sides of the heat exchange tube opening.

[0012] Furthermore, the connecting part is a concave fixing groove; the fixing component includes a card plate, the card plate includes a card plate body and a card groove extending along the card plate body, the groove opening of the card groove is connected and fitted with the groove opening of the fixing groove.

[0013] Furthermore, the main body of the card plate extends upward and / or downward to form at least two card slots, so as to allow side-by-side turbulence plates or at least two rows of turbulence plates arranged vertically to share the same card plate.

[0014] Furthermore, the fixing assembly also includes a locking bolt, which passes through the clamping plate body and is fixed to the tube sheet of the heat exchanger body.

[0015] Furthermore, the connecting part is a fixing hole provided on the connector head; the fixing component includes a pressure strip, the cross-sectional shape of the pressure strip is the same as the shape of the fixing hole, and the cross-sectional size of the pressure strip is consistent with the size of the fixing hole; the pressure strip passes through the fixing hole and both ends of the pressure strip are fixed to limit the turbulence plate.

[0016] Furthermore, all turbulence plates located in the same row share the same pressure strip. The two ends of the pressure strip are in contact with the end cap step surface of the shell-and-tube heat exchanger. When the end cap is fastened to the heat exchanger body by bolts, the pressure strip is pressed tight, and all degrees of freedom of the turbulence plates are restricted.

[0017] Furthermore, the connecting part is a folded edge provided on the connecting head, and the fixing component includes a pressure strip, the two ends of which are fixed, and the pressure strip is stuck at the corner position of the turbulence plate folded edge.

[0018] Furthermore, all turbulence plates located in the same row share the same pressure strip. The pressure strip and the end cap at the end of the shell-and-tube heat exchanger are an integral structure. When the end cap and the heat exchanger body are fastened together by bolts, the pressure strip is pressed down, and all degrees of freedom of the turbulence plates are restricted.

[0019] One of the present inventions is a shell-and-tube heat exchanger, comprising a turbulent plate fixing structure as described in any of the preceding claims.

[0020] One of the present inventions is a slurry cooling device, comprising a shell-and-tube heat exchanger as described above.

[0021] The beneficial effects of this utility model are as follows: by designing a connector on the original turbulence plate and using different connector structures to make detachable connections with corresponding fixing components, the overall structure is simple, the performance is reliable, the disassembly and assembly are convenient, the cleaning and maintenance costs are low, the disassembly and assembly efficiency can be greatly improved, and the entry of metal foreign objects into the slurry can be effectively prevented. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a horizontal shell-and-tube heat exchanger in the prior art;

[0023] Figure 2 This is a schematic diagram of the structure of an existing heat exchanger body;

[0024] Figure 3 This is a schematic diagram of the fixing structure of Embodiment 1 of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the turbulence plate in Embodiment 1 of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the card plate in Embodiment 1 of this utility model;

[0027] Figure 6 This is a schematic diagram of the fixing structure of Embodiment 2 of this utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the pressure strip and the rear end cap in Embodiment 2 of this utility model;

[0029] Figure 8 This is a schematic diagram of the structure of the turbulence plate in Embodiment 2 of this utility model;

[0030] Figure 9 This is a schematic diagram of the fixing structure of Embodiment 3 of this utility model;

[0031] Figure 10 This is a schematic diagram of the turbulence plate in Embodiment 3 of this utility model.

[0032] Explanation of reference numerals in the attached diagram:

[0033] 1. Heat exchanger body; 2. Front end cap; 3. Rear end cap; 4. Turbulence vane body; 5. Connector; 6. Clamping plate; 7. Locking bolt; 8. Pressure strip;

[0034] 11. Tube sheet; 12. Shell; 13. Heat exchange tube; 14. Baffle plate; 15. Turbulence plate; 16. Inlet; 17. Insulation layer; 18. Outlet; 51. Step; 52. Fixing groove; 53. Fixing hole; 54. Folded edge; 61. Clamping plate body; 62. Clamping groove; 63. Bolt through hole. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Example 1

[0037] like Figures 3-5 As shown: a turbulence plate fixing structure, wherein the turbulence plate includes a turbulence plate body 4 and a connector 5 provided at one end of the turbulence plate body; the connector 5 extends a step 51 at the end near the turbulence plate body 4 for engaging with a heat exchange tube 13; the connector 5 is provided with a fixing groove 52 at the end away from the turbulence plate body for connecting with a fixing component.

[0038] In this embodiment, the turbulence plate body 3 and the connector 4 are integrally formed. The turbulence plate body 4 is spiral-shaped. When the turbulence plate body 4 extends into the heat exchange tube 13, the step 51 of the connector 5 just engages with the opening of the heat exchange tube 13. The connector is a flat plate. The connector 5 extends steps 51 to both sides at the end that connects to the turbulence plate body 4, forming notches that engage with the two sides of the opening of the heat exchange tube. The fixing groove 52 of the connector 5 extends away from the heat exchange tube 13, forming a concave structure.

[0039] In this embodiment, the fixing assembly includes a clamping plate 6 and locking bolts 7. There are multiple heat exchange tubes 13, each containing one turbulence plate. Turbulence plates in at least two adjacent heat exchange tubes 13 are grouped together, and each group of turbulence plates is secured by the same clamping plate 6. The clamping plate 6 includes a clamping plate body 61 and at least two clamping slots 62 extending along the clamping plate body. The number of clamping slots 62 is the same as the number of corresponding turbulence plates, and the positions of the clamping slots 62 correspond to the positions of the fixing slots 52 on each turbulence plate. For example, if seven turbulence plates form a group, with four turbulence plates arranged in one row and the other three in another row, arranged vertically (e.g., four in the upper row and three in the lower row), then the corresponding clamping plate extends four clamping slots upwards and three clamping slots downwards along the clamping plate body 61, thus corresponding one-to-one with the fixing slots 52 of the seven turbulence plates. When the heat exchange tube 13 is arranged horizontally, the connector 5 on the turbulence plate is arranged horizontally, the main body 61 of the card plate is located in the gap between the upper and lower rows, and the card groove 62 extends out in a direction perpendicular to the connector 5, so that the groove of the card groove 62 aligns and fits with the groove of the fixing groove 52, thereby limiting the vertical direction of the turbulence plate.

[0040] In this embodiment, the main body 61 of the clamping plate is provided with bolt through holes 63. The clamping plate 6 is fixed to the tube sheet 11 by locking bolts 7 passing through the bolt through holes 63 on the clamping plate. When the locking bolts 7 are tightened, the step 51 of the turbulence plate engages with the opening of the heat exchange tube 13, and the lateral tightening of the locking bolts 7 achieves lateral limitation of the turbulence plate. In addition, the fixing groove 52 of the turbulence plate is vertically limited by the clamping groove 62 of the clamping plate, thus restricting all degrees of freedom of the turbulence plate. When the material passes through the heat exchange tube 13, the turbulence plate will not rotate and scrape the inner wall of the heat exchange tube. When the heat exchanger needs cleaning and maintenance, only the locking bolts 7 and the clamping plate 6 need to be removed, and the turbulence plate can be easily removed.

[0041] It is understood that this embodiment can also be used to prevent the locking bolt 7 from loosening, preferably by using a double locking washer, which is simple and reliable.

[0042] Example 2

[0043] like Figures 6-8 As shown: The difference from Embodiment 1 is that the connector 5 of the turbulence plate has a step 51 for engaging with the heat exchange tube 13 at the end near the turbulence plate body 4, and a fixing hole 53 for connecting with the fixing component at the end away from the turbulence plate body 4.

[0044] Specifically, the connector 5 is a flat plate with a convex cross-section. The protruding part of the flat plate is provided with fixing holes 53, and the lower parts of the extended sides are provided with steps 51 to form notches that engage with the two sides of the heat exchange tube opening.

[0045] The fixing component includes a pressure strip 8, which is fixed in conjunction with the rear end cap 3 of the shell-and-tube heat exchanger. The cross-sectional shape of the pressure strip 8 is the same as the shape of the fixing hole 53 of the turbulence plate, and the cross-sectional dimensions of the pressure strip 8 are consistent with the dimensions of the fixing hole 53. For example, if the cross-sectional shape of the pressure strip 8 is rectangular, the shape of the fixing hole 53 is also rectangular. To simplify the structure, all turbulence plates in the same row share the same pressure strip 8, so the number of pressure strips 8 corresponds to the number of rows of turbulence plates on the heat exchanger body 1. After the pressure strip 8 passes through the fixing hole 53 of each turbulence plate in a row, its two ends contact the stepped surface on the rear end cap 3 of the shell-and-tube heat exchanger. When the rear end cap 3 is fastened to the heat exchanger body 1 by bolts, the pressure strip 8 is pressed tight, and all degrees of freedom of the turbulence plate are restricted. When the material passes through the heat exchange tube 13, the turbulence plate will not rotate and scrape the inner wall of the heat exchange tube. When the heat exchanger needs cleaning or maintenance, simply remove the rear end cap 3, pull out the pressure strip 8, and the turbulence plate can be easily removed.

[0046] Furthermore, when the heat exchanger needs cleaning or maintenance, this embodiment does not require pulling the pressure bar 8 out of each fixing hole 53 of the turbulence plate. Instead, multiple turbulence plates passing through the pressure bar 8 can be pulled out simultaneously. Similarly, when installing the turbulence plates, multiple turbulence plates can be installed simultaneously using the same principle. That is, when removing / installing the turbulence plates, multiple turbulence plates passing through the pressure bar can be removed / installed simultaneously, which significantly improves the efficiency of removal and installation.

[0047] Example 3

[0048] like Figure 9 and Figure 10 As shown: The difference from Embodiment 2 is that the connector 5 of the turbulence plate has a step 51 for engaging with the heat exchange tube 13 at the end near the turbulence plate body 4, and a folded edge 54 for connecting with the fixing component at the end away from the turbulence plate body 4.

[0049] Specifically, this embodiment is based on embodiment 2, but the protruding part of the connector 5 is designed as a curved surface to form a folded edge 54, and the cross-sectional shape of the folded edge 54 is S-shaped. The fixing component includes a pressure strip 8, which is fixed to the rear end cap 3 of the shell-and-tube heat exchanger, and the rear end cap 3 and the pressure strip 8 are an integral structure. The step 51 of the turbulent plate contacts and engages with the heat exchange tube 13, and the pressure strip 8 contacts the folded edge 54 of the turbulent plate. That is, all turbulent plates in the same row share the same pressure strip 8, and the pressure strip 8 is engaged at the corner position of each turbulent plate folded edge. When the rear end cap 3 is fastened to the heat exchanger body 1 by bolts, the pressure strip is pressed, and all degrees of freedom of the turbulent plate are restricted. That is, after the pressure strip 8 is pressed, the step 51 of the turbulent plate contacts and adheres to the heat exchange tube 13. The frictional resistance of this contact surface can prevent the turbulent plate from rotating; the tail end of the folded edge 54 forms a corner, which can further prevent the turbulent plate from rotating. When the material passes through the heat exchange tube 13, the turbulence vanes will not rotate and scrape the inner wall of the heat exchange tube. When the heat exchanger needs cleaning or maintenance, the turbulence vanes can be easily removed simply by removing the rear end cap 3.

[0050] Example 4

[0051] A slurry cooling device includes a shell-and-tube heat exchanger, wherein the shell-and-tube heat exchanger is provided with any one of the turbulence plate fixing structures in Examples 1 to 3.

[0052] By improving the structure of the turbulence plate and using a fixing component to detachably connect the turbulence plate, the pollution problem caused by welding can be solved, thus improving the quality of the battery slurry.

[0053] In summary, all three embodiments of this utility model have simple structures, reliable performance, and are easy to assemble and disassemble, with low cleaning and maintenance costs. In particular, the second solution, which uses a pressure strip combined with a fixing hole, can further improve the efficiency of assembly and disassembly.

[0054] Furthermore, the term "connection" should be interpreted broadly, for example, it can include fixed connections, detachable connections, or integral connections; it can include direct connections or indirect connections through an intermediate medium, and it can also include internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A turbulence plate fixing structure, characterized in that, It includes a turbulence plate body and a fixing assembly; the turbulence plate body is provided with a connector, the connector having an engagement part extending from the end near the turbulence plate body for fitting and connecting with a heat exchange tube, and the connector having a connection part at the end away from the turbulence plate body for detachable connection with the fixing assembly.

2. The turbulator fixation structure of claim 1, wherein The engaging part has a stepped structure, with the connector extending outwards from the end near the turbulent plate body, and engaging with the two sides of the heat exchange tube opening.

3. The turbulator fixation structure of claim 1, wherein The connecting part is a concave fixing groove; the fixing component includes a card plate, the card plate includes a card plate body and a card groove extending along the card plate body, the groove opening of the card groove is connected and fitted with the groove opening of the fixing groove.

4. The turbulator fixation structure of claim 3, wherein The main body of the card plate extends upward and / or downward with at least two slots to allow side-by-side turbulence vanes or at least two rows of turbulence vanes arranged vertically to share the same card plate; the fixing assembly also includes locking bolts that pass through the main body of the card plate and are fixed to the tube sheet of the heat exchanger body.

5. The turbulence strip fixing structure according to claim 1 or 2, characterized in that, The connecting part is a fixing hole provided on the connector head; the fixing component includes a pressure strip, the cross-sectional shape of the pressure strip is the same as the shape of the fixing hole, and the cross-sectional size of the pressure strip is the same as the size of the fixing hole; the pressure strip passes through the fixing hole and both ends of the pressure strip are fixed to limit the turbulence plate.

6. The turbulator fixation structure of claim 5, wherein All turbulence plates located in the same row share the same pressure strip. The two ends of the pressure strip are in contact with the end cap step surface of the shell-and-tube heat exchanger. When the end cap is fastened to the heat exchanger body by bolts, the pressure strip is pressed tight, and all degrees of freedom of the turbulence plates are restricted.

7. The turbulator fixation structure of claim 1 or 2, wherein The connecting part is a folded edge provided on the connector head, and the fixing component includes a pressure strip, the two ends of which are fixed, and the pressure strip is stuck at the corner position of the turbulence plate folded edge.

8. The turbulator fixation structure of claim 7, wherein All turbulence plates located in the same row share the same pressure strip. The pressure strip and the end cap of the shell-and-tube heat exchanger are an integral structure. When the end cap and the heat exchanger body are fastened together by bolts, the pressure strip is pressed down, and all degrees of freedom of the turbulence plates are restricted.

9. A shell-and-tube heat exchanger, comprising the turbulence plate fixing structure according to any one of claims 1 to 8.

10. A slurry cooling device, comprising the shell-and-tube heat exchanger according to claim 9.

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