A shell-and-tube heat exchanger and temperature control device

Abstract

This invention relates to the field of shell-and-tube heat exchangers, specifically a shell-and-tube heat exchanger and temperature control device, including a heat exchange box. A first plate is fixedly installed inside the heat exchange box, and second plates are fixedly installed at both ends of the heat exchange box. Sealing grooves are formed on both sides of the second plates, located on the side of the second plate away from the first plate. Third plates are provided on both sides of the heat exchange box. The core of this invention is a U-shaped heat pipe, which is evacuated and then filled with a special phase-change heat transfer medium for heat pipes, achieving efficient heat transfer through phase-change circulation. The third plate is fixed by the first plate, and a pushing mechanism drives a pressure block to compress the rubber sealing ring of the third plate for sealing. Opening the third plate allows for quick cleaning of the internal U-shaped heat pipe and flow channels, facilitating disassembly of the main body and significantly simplifying subsequent maintenance and reducing maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of shell-and-tube heat exchangers, specifically to a shell-and-tube heat exchanger and a temperature control device. Background Technology

[0002] Shell-and-tube heat exchangers, also known as tubular heat exchangers, are indirect heat exchangers that use the walls of a tube bundle within a closed shell as the heat transfer surface. They are the most typical type of indirect heat exchanger. Based on the principle of indirect heat transfer, shell-and-tube heat exchangers allow heat transfer between two fluids at different temperatures—the tube-side fluid and the shell-side fluid—without mixing, through the tube walls. Typically, the warmer fluid enters from the shell-side inlet, flows around the tube bundle within the shell, releases heat, and exits from the shell-side outlet. The cooler fluid enters from the tube-side inlet. However, during operation, impurities, salts, microorganisms, and other contaminants in the tube-side and shell-side fluids can deposit on the walls of the U-shaped heat-conducting tubes and inside the shell, forming fouling. Fouling can significantly reduce heat transfer efficiency, increase fluid resistance, and even lead to pipe blockage and equipment corrosion. Therefore, regular cleaning and descaling are necessary. However, traditional shell-and-tube heat exchangers use welding or screw connections to fix the inside or seal the outside, which requires operators to spend a lot of time and effort to maintain the shell-and-tube heat exchanger, resulting in a significant increase in subsequent maintenance costs.

[0003] Therefore, a shell-and-tube heat exchanger and temperature control device are proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a shell-and-tube heat exchanger and a temperature control device to solve the problem that traditional shell-and-tube heat exchangers use welding or screw connections to fix the inside and outside of the heat exchanger, which requires operators to spend a lot of time and effort during later maintenance, resulting in a significant increase in the subsequent maintenance cost of the shell-and-tube heat exchanger.

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

[0006] A shell-and-tube heat exchanger and temperature control device include a heat exchange box. A first plate is fixedly installed inside the heat exchange box. Second plates are fixedly installed at both ends of the heat exchange box. Sealing grooves are formed on both sides of the second plates, located on the side of the second plate away from the first plate. Third plates are provided on both sides of the heat exchange box. Rubber sealing rings are fixedly installed on the third plates. When the third plate abuts against the second plate, the rubber sealing rings enter the sealing grooves. A first block is installed on the heat exchange box. The first block and the third block... The heat exchange box is equipped with a pushing structure that pushes the first block to fit tightly against the third plate. The first plate has multiple mounting holes, and a U-shaped heat-conducting tube is placed in each mounting hole. The U-shaped heat-conducting tube has a hollow structure and is used to contain the phase change heat transfer medium. The heat exchange box is equipped with multiple vertically distributed baffles that are fitted onto the U-shaped heat-conducting tube. The first plate is equipped with a fixing structure that stretches the U-shaped heat-conducting tube. The two ends of the U-shaped heat-conducting tube pass through the first plate and form a closed heat transfer loop.

[0007] In existing shell-and-tube heat exchanger applications, the No. 3 plates on both sides of the heat exchange box are fixed to the heat exchange box by welding. However, shell-and-tube heat exchangers fixed in this way are difficult to clean internally. Therefore, in this invention, the No. 3 plates are fixed by a No. 1 block. Rotating the No. 1 block causes the No. 3 plates to tightly squeeze the rubber sealing ring for sealing. By opening the No. 3 plates, the interior of the shell-and-tube heat exchanger can be quickly cleaned. Of course, because two different media will transfer heat through U-shaped heat conduction tubes during use, a large amount of dirt will remain on the outer wall of the U-shaped heat conduction tubes. The U-shaped heat conduction tubes installed on the No. 1 plate are numerous and densely distributed, which seriously hinders the operator from cleaning the U-shaped heat conduction tubes. The pushing and fixing structure allows for quick disassembly of the shell-and-tube heat exchanger body, greatly facilitating the operator's later maintenance of the shell-and-tube heat exchanger, thereby improving the overall performance and reliability of the heat exchanger.

[0008] Preferably, the pushing structure includes multiple second blocks, which are uniformly and circumferentially fixedly installed on the side wall of the heat exchange box. A first post is threadedly connected to each second block. One end of the first post is fixedly installed to the first block, and the other end of the first post has a rectangular hole. A prism is slidably connected inside the rectangular hole, and a gear is fixedly installed on the prism. A gear ring is fitted onto the heat exchange box and rotatably connected to it. Multiple gears mesh with the gear ring. A second hole is opened on the second plate, and a positioning post is fixedly installed on the third plate. When the third plate abuts against the second plate, the positioning post enters the second hole. The first block is used to press and fix the end of the U-shaped heat pipe, ensuring the sealed connection between the evaporation section and the condensation section of the U-shaped heat pipe.

[0009] In conventional heat exchangers, the No. 3 plates on both sides are connected by threads and secured with multiple screws arranged in a circumferential array. This invention, however, uses a rotating gear ring to drive multiple meshing gears to rotate synchronously. Since the gears are fixedly connected to a prism, and the prism slides within a rectangular hole, the rotation of the gears causes the No. 1 column to rotate within the threaded hole, thus pushing the No. 1 block towards the No. 3 plate, achieving a pressing effect. Simultaneously, the design of the positioning column and the No. 2 hole ensures precise alignment between the No. 3 and No. 2 plates, improving the sealing effect. This structure is not only easy to operate and facilitates cleaning of the inside of the shell-and-tube heat exchanger, but also provides reliable sealing performance, effectively preventing leaks during operation.

[0010] Preferably, the fixing structure includes a third block, which has a through hole and an external thread. A connecting pipe is welded inside the U-shaped heat pipe, and the connecting pipe has an internal thread. The U-shaped heat pipe passes through the mounting hole and is threadedly connected to the third block. A rotating ring is rotatably connected to the third block, and an outer rubber gasket is fixedly installed on the rotating ring. A limiting ring is welded to the U-shaped heat pipe, and an inner rubber gasket is fixedly installed on the limiting ring. The inner rubber gasket is located on the side of the limiting ring closer to the first plate. The double sealing structure of the outer and inner rubber gaskets is used to prevent the shell-side fluid from entering the interior of the U-shaped heat pipe, ensuring the purity and phase change cycle stability of the phase change heat transfer medium inside the U-shaped heat pipe.

[0011] In traditional shell-and-tube heat exchangers, U-shaped heat pipes are fixed to plate number one by welding. Over long-term use, dirt accumulates on these pipes. Furthermore, the dense arrangement of the U-shaped heat pipes makes cleaning extremely complex. Incomplete cleaning can severely impact the heat exchanger's efficiency and lifespan. Therefore, a detachable design allows for easier cleaning of the U-shaped heat pipes and the inner wall of the heat exchange chamber. Additionally, if one of the multiple U-shaped heat pipes is damaged, replacing it quickly restores the shell-and-tube heat exchanger to normal operation. In this design, the fixing structure uses block number three, threadedly connected to the U-shaped heat pipes, ensuring a tight connection between the U-shaped heat pipes and plate number one, effectively preventing shaking or displacement during use. Furthermore, the outer rubber gasket on the rotating ring and the inner rubber gasket on the limiting ring further enhance the sealing effect, preventing media leakage and improving the overall reliability and safety of the heat exchanger.

[0012] Preferably, multiple rings are fixedly installed inside the heat exchange box. The cross-section of each ring is triangular, and the inclined surface of each ring faces a plate on one side. Multiple stabilizing columns are fixedly installed on each ring, and multiple baffles are fixedly installed on the rings via the stabilizing columns. Each baffle has a hole for a U-shaped heat pipe to pass through. An annular rubber baffle is fixedly installed inside each hole. A support ring is fixedly installed on the U-shaped heat pipe, and the support ring fits into the corresponding hole. The diameter of the holes on different baffles is different and they are arranged sequentially according to the size of the holes, with the diameter of the holes becoming smaller the closer to the plate.

[0013] In practical applications, multiple baffles can be fixed using the No. 1 ring. The No. 1 ring has a triangular cross-section, with its inclined surface facing one of the No. 1 baffles. This design allows dirt inside the heat exchanger to be scraped off by the inclined surface during cleaning. The annular rubber baffle not only acts as a buffer when the U-shaped heat pipe passes through the No. 1 hole, reducing friction and collision between the U-shaped heat pipe and the hole wall, preventing damage to the U-shaped heat pipe, but also enhances the sealing performance. The contact between the support ring and the annular rubber baffle improves the sealing of the No. 1 hole, ensuring that the liquid flows along the baffles and prevents leakage of the medium from the No. 1 hole during heat exchange. The fit between the support ring and the No. 1 hole further improves the stability of the U-shaped heat pipe installation, ensuring that the heat exchange efficiency is not affected by shaking during operation. Of course, the diameter of the No. 1 hole opened on the baffle plate is different, and they are arranged in order of the size of the No. 1 hole. The diameter of the No. 1 hole is smaller the closer to the No. 1 plate. This design structure allows the support rings at different positions to fit with the corresponding No. 1 hole, while not affecting the U-shaped heat conduction tube to drive the support ring through different No. 1 holes, thus ensuring the stable operation of the entire shell and tube heat exchanger.

[0014] Preferably, a support frame is fixedly installed on the first ring. The support frame is located in the lower half of the heat exchange box. The support frame has multiple holes for U-shaped heat pipes to pass through. The diameter of the holes is larger than the outer diameter of the U-shaped heat pipes. The U-shaped heat pipes abut against the bottom of the holes. The support frame is used to support the evaporation section of the U-shaped heat pipes and prevent the heat pipes from deforming due to their own weight and affecting the phase change medium return channel.

[0015] The support frame further enhances the stability of the U-shaped heat pipes within the heat exchanger, preventing them from shaking or shifting during use. Simultaneously, the design of the orifice diameter being larger than the outer diameter of the U-shaped heat pipe facilitates installation and removal, while ensuring that the U-shaped heat pipes do not come into contact with the inner wall of the orifice after thermal expansion, thus preventing collisions that could cause breakage. Furthermore, the support frame supports multiple U-shaped heat pipes, preventing bending and breakage after prolonged use. This design makes the entire shell-and-tube heat exchanger structure more stable and its performance more reliable.

[0016] Preferably, the first block has multiple circular grooves, each of which is rotatably connected to a ball bearing. The first block also has a flow channel that communicates with the multiple circular grooves. The flow channel is used to drain a small amount of condensate generated at the end of the U-shaped heat pipe due to sealing and compression.

[0017] By incorporating ball bearings, the ball bearings can roll when the No. 1 block moves relative to other components, thereby reducing the friction during the movement of the No. 1 block and making the operation smoother. At the same time, the design of the flow channel ensures that the lubricating fluid drips into the circular grooves during equipment operation, preventing friction from affecting the normal rolling of the ball bearings and the normal operation of the No. 1 block, thus improving the stability and reliability of the entire shell-and-tube heat exchanger and temperature control device.

[0018] Preferably, both the rubber sealing ring and the sealing groove have a semi-elliptical cross-section. The rubber sealing ring has an annular recess, and the sealing groove has an annular protrusion. After the rubber sealing ring enters the sealing groove, the annular recess and the annular protrusion fit together. The sealing pressure of the semi-elliptical sealing structure is adapted to the thermal expansion and contraction deformation of the U-shaped heat pipe during operation, ensuring the sealing reliability during long-term heat exchange.

[0019] The annular protrusion embeds into the annular recess, forming a tight seal that effectively prevents fluid leakage and ensures the heat exchanger's sealing performance during operation. Both the rubber sealing ring and the sealing groove have semi-elliptical cross-sections, with annular recesses on the rubber sealing ring and annular protrusions within the sealing groove. This design significantly increases the contact area between the rubber sealing ring and the sealing groove, further enhancing their sealing performance. This design not only improves sealing reliability but also extends the service life of the sealing ring, reducing the frequency of maintenance and replacement.

[0020] Preferably, the heat exchanger includes an elongated hole on the lower half of the third plate, a solenoid valve fixedly installed on one side of the heat exchanger, a temperature detector threaded into the elongated hole, one end of the temperature detector extending into the heat exchanger, and a temperature control component connected between the other end of the temperature detector and the solenoid valve. The temperature control component dynamically adjusts the opening of the solenoid valve according to the detected shell-side fluid temperature to control the fluid flow rate, so that the temperature difference between the shell-side fluid and the heat pipe-specific phase change heat transfer medium inside the U-shaped heat pipe is maintained within a preset range of 5-20℃.

[0021] In the operation of shell-and-tube heat exchangers, temperature detectors play a crucial role. Through mounting holes in the lower half of the No. 3 plate, the temperature detector can be precisely installed, extending into the heat exchange chamber. One end of it senses real-time temperature changes within the heat exchanger, converting the temperature signal into an electrical signal. The other end is connected to a solenoid valve via a cable. When the temperature detector detects that the internal temperature exceeds a preset range, it quickly transmits a signal to the solenoid valve. The solenoid valve automatically adjusts its opening based on the received signal, thereby precisely controlling the flow rate of the medium within the heat exchanger and achieving effective temperature regulation. Furthermore, because the temperature detector is threaded onto the heat exchange chamber, it can be quickly replaced if a malfunction occurs, greatly facilitating the maintenance and use of the shell-and-tube heat exchanger.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. Block 1 fixes Plate 3. The pushing structure pushes Block 1 to rotate, causing Plate 3 to tightly squeeze the rubber sealing ring for sealing. Opening Plate 3 allows for quick cleaning of the inside of the shell-and-tube heat exchanger. The pushing structure also allows for quick disassembly of the shell-and-tube heat exchanger body, greatly facilitating the operator's subsequent maintenance of the shell-and-tube heat exchanger and reducing the subsequent maintenance cost of the shell-and-tube heat exchanger.

[0024] 2. By using block number three to install the U-shaped heat pipe onto plate number one, when the outer wall of the U-shaped heat pipe needs cleaning, rotate block number three to detach it from the U-shaped heat pipe. The corresponding U-shaped heat pipe can then be removed. If one of the multiple sets of U-shaped heat pipes is damaged, replacing the corresponding U-shaped heat pipe can quickly restore the shell-and-tube heat exchanger to normal operation. This facilitates the operator's subsequent maintenance of the shell-and-tube heat exchanger and reduces its maintenance costs.

[0025] 3. Of course, the diameter of the No. 1 hole opened on the baffle plate is different, and they are arranged in order of the size of the No. 1 hole. The diameter of the No. 1 hole is smaller the closer to the No. 1 plate. This design structure allows the support rings at different positions to fit with the corresponding No. 1 holes, while not affecting the U-shaped heat pipes driving the support rings through different No. 1 holes. This ensures the stable operation of the shell and tube heat exchanger and reduces the subsequent maintenance cost of the shell and tube heat exchanger. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the toothed ring structure of the present invention;

[0028] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0029] Figure 4 This is a schematic diagram of the internal structure of the heat exchanger in this invention;

[0030] Figure 5 for Figure 4 Schematic diagram of the structure at point B;

[0031] Figure 6 This is a schematic diagram of the structure of the two baffles in this invention;

[0032] Figure 7 This is a schematic diagram of the structure of ring number one in this invention;

[0033] Figure 8 This is a schematic diagram of the internal structure of block number one in this invention;

[0034] Figure 9 This is a schematic diagram of the structure of plate number two in this invention.

[0035] In the diagram: 1. Heat exchanger box; 2. Gear ring; 3. Plate No. 3; 4. Block No. 1; 5. Solenoid valve; 6. Block No. 2; 7. Column No. 1; 8. Temperature detector; 9. Hole No. 2; 10. Rectangular hole; 11. Prism; 12. Gear; 13. Plate No. 1; 14. Block No. 3; 15. U-shaped heat pipe; 16. Ring No. 1; 17. Baffle plate; 18. Support frame; 181. Hole; 19. Rotating ring; 20. Outer rubber gasket; 21. Limiting ring; 22. Inner rubber gasket; 23. Connecting pipe; 24. Positioning column; 25. Mounting hole; 26. Hole No. 1; 27. Annular rubber baffle; 28. Support ring; 29. ​​Stabilizing column; 30. Ball bearing; 31. Flow guide channel; 32. Rubber sealing ring; 33. Plate No. 2; 34. Sealing groove. Detailed Implementation

[0036] Please see Figures 1 to 9 This invention provides a shell-and-tube heat exchanger and a temperature control device, the technical solution of which is as follows:

[0037] A shell-and-tube heat exchanger and temperature control device include a heat exchange box 1. A first plate 13 is fixedly installed inside the heat exchange box 1. Second plates 33 are fixedly installed at both ends of the heat exchange box 1. Sealing grooves 34 are formed on both sides of the second plates 33, located on the side of the second plates 33 away from the first plate 13. Third plates 3 are provided on both sides of the heat exchange box 1. Rubber sealing rings 32 are fixedly installed on the third plates 3. When the third plate 3 abuts against the second plates 33, the rubber sealing rings 32 enter the sealing grooves 34. A first block 4 is installed on the heat exchange box 1, and the first block 4 is connected to the third plate. 3. The heat exchange box 1 is equipped with a pushing structure that pushes the first block 4 to be tightly attached to the third plate 3. The first plate 13 has multiple mounting holes 25. A U-shaped heat conduction tube 15 is placed in the mounting holes 25. The U-shaped heat conduction tube 15 is a hollow structure and is used to contain the phase change heat transfer medium. The heat exchange box 1 is equipped with multiple vertically distributed baffles 17. The baffles 17 are sleeved on the U-shaped heat conduction tube 15. The first plate 13 is equipped with a fixing structure that stretches the U-shaped heat conduction tube 15. The two ends of the U-shaped heat conduction tube 15 pass through the first plate 13 respectively and form a closed heat transfer circuit.

[0038] The pushing structure includes multiple second blocks 6, which are uniformly fixedly installed on the side wall of the heat exchange box 1. A first post 7 is threadedly connected to the second block 6. One end of the first post 7 is fixedly installed with the first block 4, and the other end of the first post 7 has a rectangular hole 10. A prism 11 is slidably connected in the rectangular hole 10. A gear 12 is fixedly installed on the prism 11. A gear ring 2 is fitted on the heat exchange box 1 and rotates therewith. Multiple gears 12 mesh with the gear ring 2. A second hole 9 is opened on the second plate 33. A positioning post 24 is fixedly installed on the third plate 3. When the third plate 3 abuts against the second plate 33, the positioning post 24 enters into the second hole 9. The first block 4 is used to press and fix the end of the U-shaped heat pipe 15 to ensure the sealing and communication between the heat pipe evaporation section and the condensation section of the U-shaped heat pipe 15.

[0039] The fixed structure includes a third block 14, which has a through hole and an external thread. The U-shaped heat pipe 15 is a gravity-type heat pipe with a built-in heat pipe and a special phase change heat transfer medium. A connecting pipe 23 is welded inside the U-shaped heat pipe 15, and the connecting pipe 23 has an internal thread. The U-shaped heat pipe 15 passes through the mounting hole 25 and is threaded to the third block 14. A rotating ring 19 is rotatably connected to the third block 14, and an outer rubber gasket 20 is fixedly installed on the rotating ring 19. A limiting ring 21 is welded to the U-shaped heat pipe 15, and an inner rubber gasket 22 is fixedly installed on the limiting ring 21. The inner rubber gasket 22 is located on the side of the limiting ring 21 closer to the first plate 13. The double sealing structure of the outer rubber gasket 20 and the inner rubber gasket 22 is used to prevent fluid from entering the interior of the U-shaped heat pipe 15, ensuring the purity and phase change cycle stability of the phase change heat transfer medium inside the U-shaped heat pipe 15.

[0040] Multiple rings 16 are fixedly installed inside the heat exchange box 1. The cross-section of the ring 16 is triangular. The inclined surface of the ring 16 faces the plate 13 on one side. Multiple stabilizing columns 29 are fixedly installed on the ring 16. Multiple baffles 17 are fixedly installed on the ring 16 through the stabilizing columns 29. The baffles 17 have holes 26 for U-shaped heat pipes 15 to pass through. An annular rubber baffle 27 is fixedly installed inside the hole 26. A support ring 28 is fixedly installed on the U-shaped heat pipe 15. The support ring 28 fits into the corresponding hole 26. The diameter of the holes 26 on different baffles 17 is different and they are arranged in order of size. The diameter of the hole 26 is smaller the closer it is to the plate 13.

[0041] A support frame 18 is fixedly installed on the first ring 16. The support frame 18 is located in the lower half of the heat exchange box 1. The support frame 18 has multiple holes 181 for the U-shaped heat conduction tube 15 to pass through. The diameter of the holes 181 is larger than the outer diameter of the U-shaped heat conduction tube 15. The U-shaped heat conduction tube 15 abuts against the bottom of the holes 181. The support frame 18 is used to support the evaporation section of the U-shaped heat conduction tube 15 and prevent the U-shaped heat conduction tube 15 from deforming due to its own weight and affecting the phase change medium return channel.

[0042] Multiple circular grooves are provided on block 4, and ball bearings 30 are rotatably connected in each of the multiple circular grooves. A flow channel 31 is provided on block 4, which is connected to the multiple circular grooves. The flow channel 31 is used to discharge the small amount of condensate generated at the end of the U-shaped heat pipe 15 due to sealing and compression.

[0043] Both the rubber sealing ring 32 and the sealing groove 34 have a semi-elliptical cross-section. The rubber sealing ring 32 has an annular recess, and the sealing groove 34 has an annular protrusion. After the rubber sealing ring 32 enters the sealing groove 34, the annular recess and the annular protrusion fit together. The sealing pressure of the semi-elliptical sealing structure is adapted to the thermal expansion and contraction deformation of the U-shaped heat pipe 15 during operation, ensuring the sealing reliability during long-term heat exchange.

[0044] A temperature control device for a shell-and-tube heat exchanger includes an elongated hole in the lower half of a plate 3. A solenoid valve 5 is fixedly installed on one side of the heat exchange chamber 1. A temperature detector 8 is threaded into the elongated hole. One end of the temperature detector 8 extends into the heat exchange chamber 1. A temperature control component is connected between the other end of the temperature detector 8 and the solenoid valve 5. The temperature control component dynamically adjusts the opening of the solenoid valve 5 according to the detected shell-side fluid temperature to control the fluid flow rate, so that the temperature difference between the shell-side fluid and the heat pipe-specific phase change heat transfer medium inside the U-shaped heat pipe 15 is maintained within a preset range of 5-20℃.

[0045] In practical use, when a large amount of dirt remains inside the shell and tube heat exchanger after long-term operation, rotating the gear rings 2 at both ends of the heat exchange box 1 will drive the multiple gears 12 meshing with them to rotate synchronously. Since the gears 12 are fixedly connected to the prisms 11 and the prisms 11 slide in the rectangular holes 10, the rotation of the gears 12 will drive the first column 7 to rotate in the threaded hole, thereby pushing the first block 4 away from the third plate 3, realizing the function of the first block 4 to loosen the third plate 3. At this time, it can be moved to one side to open the third plate 3.

[0046] In traditional shell-and-tube heat exchangers, U-shaped heat pipes 15 are fixed to plate 13 by welding. Over time, dirt accumulates on these pipes. Furthermore, the dense arrangement of the U-shaped heat pipes makes cleaning extremely complex. Incomplete cleaning can severely impact the heat exchanger's efficiency and lifespan. Therefore, a detachable design allows for easier cleaning of the U-shaped heat pipes 15 and the inner wall of the heat exchange chamber 1. Additionally, if one of the multiple U-shaped heat pipes 15 is damaged, replacing it quickly restores the shell-and-tube heat exchanger to normal operation. Specifically, by rotating block 14 in the reverse direction, it disengages from the threaded connecting pipe 23. At this point, the U-shaped heat pipe 15 can be pulled away from the baffle plate 17 from the other side, moving the support ring 28 fixed to the U-shaped heat pipe 15 away from the baffle plate 17. The diameters of the No. 1 holes 26 on plate 7 are different and arranged sequentially according to their size. The diameter of the No. 1 hole 26 is smaller the closer it is to the No. 1 plate 13. This design structure allows the support rings 28 at different positions to fit into the corresponding No. 1 holes 26, while not affecting the U-shaped heat pipes 15 from driving the support rings 28 through different No. 1 holes 26. After removing the corresponding number of U-shaped heat pipes 15, the multiple baffles 17 and support frames 18 on the No. 1 ring 16 can be removed. After removal, the inner wall of the heat exchange box 1 is cleaned. Multiple No. 1 rings 16 are fixedly installed inside the heat exchange box 1. The cross-section of the No. 1 ring 16 is triangular. The No. 1 ring 16 can fix multiple baffles 17. The cross-section of the No. 1 ring 16 is triangular, and the inclined surface of the No. 1 ring 16 faces one side of the No. 1 plate 13. This setting allows the dirt inside the heat exchange box 1 to be scraped off by the inclined surface when the operator cleans the inside of the heat exchange box 1.

[0047] While cleaning the inner wall of the heat exchange box 1, the outer wall of the U-shaped heat pipe 15 is also cleaned to ensure that no dirt adheres to the inner wall of the heat exchange box 1 or the outer wall of the U-shaped heat pipe 15.

[0048] During reinstallation, multiple baffles 17 are fixed to rings 16 at different positions, and multiple U-shaped heat pipes 15 are reinserted into the mounting holes 25. For the U-shaped heat pipes 15 to enter the mounting holes 25, they need to pass through the support frame 18 and the baffles 17. The support frame 18 can further enhance the stability of the U-shaped heat pipes 15 in the heat exchange box 1, preventing them from shaking or shifting during use. Meanwhile, the design of the hole 181 having a diameter larger than the outer diameter of the U-shaped heat pipe 15 not only facilitates the installation and disassembly of the U-shaped heat pipe 15, but also ensures that the U-shaped heat pipe 15 will not come into contact with the inner wall of the hole 181 after thermal expansion, thus preventing the U-shaped heat pipe 15 from colliding with the hole 181 and breaking. Simultaneously, the U-shaped heat pipe 15 abuts against the bottom of the hole 181, and the support frame 18 supports multiple U-shaped heat pipes 15, preventing bending and breakage after long-term use. This is because the sizes of the first hole 26 are arranged sequentially, with the diameter of the first hole 26 closest to the first plate 13 being... The smaller the size, the more the support rings 28 at different positions can pass through the first hole 26 and fit into their corresponding first holes 26. Rotate the third block 14 so that the third block 14 is threadedly connected to the connecting pipe 23. The outer rubber gasket 20 installed on the third block 14 and the inner rubber gasket 22 set on the limiting ring 21 squeeze each other to seal the middle mounting hole 25. At the same time, the rotating ring 19 is rotatably connected to the third block 14 to prevent the rotating ring 19 from rotating when the rotating block rotates, which would cause the outer rubber gasket 20 on the rotating ring 19 to twist and the sealing effect of the outer rubber gasket 20 to deteriorate.

[0049] After the U-shaped heat pipe 15 is installed, a support ring 28 is fixedly installed on the U-shaped heat pipe 15. The support ring 28 passes through the corresponding baffle 17 and fits into the corresponding hole 26. The support ring 28 can not only support the U-shaped heat pipe 15 as a whole, but also cooperate with the annular rubber baffle 27 to seal the round hole on the baffle 17, preventing liquid from flowing through the round hole and ensuring the performance of the baffle 17.

[0050] Finally, plate 3 is installed. Rotating the gear ring 2 causes multiple gears 12 meshing with it to rotate synchronously. Since gears 12 are fixedly connected to prisms 11, and prisms 11 slide within rectangular holes 10, the rotation of gears 12 causes post 7 to rotate within threaded holes, thereby pushing block 4 towards plate 3, achieving the pressing effect of block 4 on plate 3. Simultaneously, the design of the positioning post 24 and hole 9 ensures precise alignment between plate 3 and plate 2, improving the sealing effect.

[0051] Temperature detector 8 can be precisely installed through mounting holes 25 in the lower half of plate 3. One end extends into the heat exchanger box 1, allowing real-time sensing of temperature changes inside the heat exchanger and converting the temperature signal into an electrical signal. The other end is connected to solenoid valve 5 via a cable. When temperature detector 8 detects that the internal temperature exceeds a preset range, it quickly transmits a signal to solenoid valve 5. Solenoid valve 5 automatically adjusts its opening based on the received signal, thereby precisely controlling the flow rate of the medium inside the heat exchanger and effectively regulating the heat exchanger temperature. Furthermore, because temperature detector 8 is threaded onto heat exchanger box 1, it can be quickly replaced if a problem occurs, greatly facilitating the maintenance and use of the shell-and-tube heat exchanger.

[0052] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. A shell-and-tube heat exchanger, characterized in that, The heat exchange box (1) includes a first plate (13) fixedly installed inside the heat exchange box (1). Second plates (33) are fixedly installed at both ends of the heat exchange box (1). Sealing grooves (34) are provided on both sides of the second plates (33), with the sealing grooves (34) located on the side of the second plates (33) away from the first plate (13). Third plates (3) are provided on both sides of the heat exchange box (1). Rubber sealing rings (32) are fixedly installed on the third plates (3). When the third plate (3) abuts against the second plates (33), the rubber sealing rings (32) enter the sealing grooves (34). A first block (4) is installed on the heat exchange box (1). 4) It abuts against plate number 3 (3). The heat exchange box (1) is equipped with a pushing structure that pushes block number 1 (4) to fit tightly against plate number 3 (3). Plate number 1 (13) has multiple mounting holes (25). A U-shaped heat conduction tube (15) is placed in the mounting hole (25). The U-shaped heat conduction tube (15) is a hollow structure and is used to contain the phase change heat transfer medium. The heat exchange box (1) is equipped with multiple vertically distributed baffles (17). The baffles (17) are sleeved on the U-shaped heat conduction tube (15). Plate number 1 (13) is equipped with a fixing structure that stretches the U-shaped heat conduction tube (15). The two ends of the U-shaped heat conduction tube (15) pass through plate number 1. The plate (13) forms a closed heat transfer loop. Multiple rings (16) are fixedly installed inside the heat exchange box (1). The cross-section of the ring (16) is triangular. The inclined surface of the ring (16) faces the plate (13) on one side. Multiple stabilizing columns (29) are fixedly installed on the ring (16). Multiple baffles (17) are fixedly installed on the ring (16) through the stabilizing columns (29). The baffles (17) have holes (26) for U-shaped heat pipes (15) to pass through. An annular rubber baffle (27) is fixedly installed inside the hole (26). A support is fixedly installed on the U-shaped heat pipe (15). The ring (28) and the corresponding hole (26) fit together. The diameter of the hole (26) on the different baffles (17) is different and arranged in order of the size of the hole (26). The diameter of the hole (26) is smaller on the side closer to the plate (13). The block (4) has multiple circular grooves. Each of the multiple circular grooves is rotatably connected with a ball (30). The block (4) has a flow channel (31). The flow channel (31) is connected to the multiple circular grooves. The flow channel (31) is used to discharge the small amount of condensate generated by the sealing and pressing at the end of the U-shaped heat pipe (15).

2. A shell-and-tube heat exchanger according to claim 1, characterized in that, The pushing structure includes multiple second blocks (6), which are uniformly fixedly installed on the side wall of the heat exchange box (1) in a circular pattern. A first column (7) is threaded onto each second block (6). One end of the first column (7) is fixedly installed with the first block (4), and the other end of the first column (7) has a rectangular hole (10). A prism (11) is slidably connected inside the rectangular hole (10), and a gear (12) is fixedly installed on the prism (11). The heat exchange box (1) A toothed ring (2) is fitted on the upper part and rotates therewith. Multiple gears (12) mesh with the toothed ring (2). A second hole (9) is opened on the second plate (33). A positioning column (24) is fixedly installed on the third plate (3). When the third plate (3) abuts against the second plate (33), the positioning column (24) enters the second hole (9). The first block (4) is used to press and fix the third plate (3) to ensure the sealing and communication between the heat pipe evaporation section and the condensation section of the U-shaped heat pipe (15).

3. A shell-and-tube heat exchanger according to claim 1, characterized in that, The fixed structure includes a third block (14), which has a through hole and an external thread. The U-shaped heat pipe (15) is a gravity-type heat pipe with a built-in heat pipe and a special phase change heat transfer medium. A connecting pipe (23) is welded inside the U-shaped heat pipe (15), and the connecting pipe (23) has an internal thread. The U-shaped heat pipe (15) passes through the mounting hole (25) and is threaded to the third block (14). A rotating ring (19) is rotatably connected to the third block (14). An outer rubber gasket (20) is fixedly installed on the U-shaped heat pipe (15). A limiting ring (21) is welded on the U-shaped heat pipe (15). An inner rubber gasket (22) is fixedly installed on the limiting ring (21). The inner rubber gasket (22) is located on the side of the limiting ring (21) close to the first plate (13). The double sealing structure of the outer rubber gasket (20) and the inner rubber gasket (22) is used to block the shell-side fluid from entering the interior of the U-shaped heat pipe (15) and ensure the purity and phase change cycle stability of the phase change heat transfer medium in the U-shaped heat pipe (15).

4. A shell-and-tube heat exchanger according to claim 1, characterized in that, A support frame (18) is fixedly installed on the first ring (16). The support frame (18) is located in the lower half of the heat exchange box (1). The support frame (18) has multiple holes (181) through which the U-shaped heat pipe (15) passes. The diameter of the holes (181) is larger than the outer diameter of the U-shaped heat pipe (15). The U-shaped heat pipe (15) abuts against the bottom of the holes (181). The support frame (18) is used to support the evaporation section of the U-shaped heat pipe (15) to prevent the U-shaped heat pipe (15) from deforming due to its own weight and affecting the phase change medium return channel.

5. A shell-and-tube heat exchanger according to claim 2, characterized in that, The cross-sections of the rubber sealing ring (32) and the sealing groove (34) are both semi-elliptical. The rubber sealing ring (32) has an annular recess, and the sealing groove (34) has an annular protrusion. After the rubber sealing ring (32) enters the sealing groove (34), the annular recess and the annular protrusion fit together.

6. A shell-and-tube heat exchanger according to claim 1, characterized in that, It also includes a temperature control device, which includes an elongated hole on the lower half of the No. 3 plate (3). An electromagnetic valve (5) is fixedly installed on one side of the heat exchange box (1). A temperature detector (8) is connected to the elongated hole by a thread. One end of the temperature detector (8) extends into the heat exchange box (1). The other end of the temperature detector (8) is connected to the electromagnetic valve (5) by a temperature control component. The temperature control component dynamically adjusts the opening of the electromagnetic valve (5) according to the detected shell fluid temperature to control the fluid flow rate, so that the temperature difference between the shell fluid and the heat pipe special phase change heat transfer medium in the U-shaped heat pipe (15) is maintained in the preset range of 5-20℃.

Images