A heat exchanger tube pulling device

Abstract

This application relates to a heat exchanger tube removal device, belonging to the technical field of heat exchanger equipment. It includes a support, a first fixing component, and a driving component. The support is provided with a positioning post and a rotating rod. The positioning post is connected to the support and is used to position the support. The rotating rod is connected to the support. The first fixing component is disposed on the rotating rod and is used to fix the rotating rod to the tube sheet. The driving component is disposed on the support and is used to drive the rotating rod to slide away from the tube sheet. This application can improve the convenience of heat exchanger tube removal.

Description

Technical Field

[0001] This application relates to the field of heat exchanger equipment technology, and in particular to a heat exchanger tube removal device. Background Technology

[0002] Shell-and-tube heat exchangers, also known as tubular heat exchangers, are indirect heat exchangers that use the wall of a tube bundle enclosed in a shell as the heat transfer surface. When the tubes in a shell-and-tube heat exchanger have been in use for a long time, they often experience damage such as cracks and leaks, requiring the tubes to be removed from the tube sheet using tube-pulling equipment for inspection and replacement.

[0003] Existing tube removal equipment includes an expansion tube and a threaded rod. The expansion tube is fixedly installed at one end of the threaded rod. In use, the operator inserts the end with the expansion tube into the tube sheet, and then tightens it with the tube sheet through the expansion structure. Then, the threaded rod is pulled to remove the expansion tube and the tube sheet from the tube sheet for inspection and replacement.

[0004] When using the tube-pulling equipment for the heat exchanger, it is difficult for the operator to ensure that the pulling force is parallel to the axis of the tubes when pulling the threaded rod. As a result, the tubes may scratch the tube sheet when they slide relative to it under tension. To avoid this, the operator needs to be careful, which greatly reduces the convenience of tube-pulling in the heat exchanger. Summary of the Invention

[0005] To improve the ease of heat exchanger tube removal, this application provides a heat exchanger tube removal device.

[0006] This application provides a heat exchanger tube removal device, which adopts the following technical solution:

[0007] A heat exchanger tube removal device includes a support, a first fixing component, and a driving component. The support is provided with a positioning post and a rotating rod. The positioning post is connected to the support and is used to position the support. The rotating rod is connected to the support. The first fixing component is disposed on the rotating rod and is used to fix the rotating rod to the tube sheet. The driving component is disposed on the support and is used to drive the rotating rod to slide away from the tube sheet.

[0008] By adopting the above technical solution, when removing tubes from the heat exchanger, the operator inserts a positioning pin into one tube and simultaneously inserts a rotating rod into the tube to be removed. The first fixing component then secures the tube to be removed to the rotating rod. Finally, the drive component drives the rotating rod to slide the tube away from the tube sheet, thereby removing the tube. The positioning pin positions the support, ensuring that the axis of the rotating rod remains parallel to the tube axis throughout the removal process. This prevents the tube sheet from being scratched due to tilting under force during removal, thus improving the ease of removing heat exchanger tubes.

[0009] Optionally, the drive assembly includes a planetary carrier, a sun gear, planetary gears, and a motor; the planetary carrier is fixedly mounted on the support; the sun gear is rotatably mounted on the planetary carrier, and the positioning post is coaxially and fixedly connected to the sun gear; at least one planetary gear is provided, the planetary gear is rotatably connected to the planetary carrier, and the planetary gear meshes with the sun gear; the motor is fixedly connected to the planetary carrier, and the motor is used to drive the sun gear to rotate; threaded holes are coaxially provided on the planetary gears; at least one rotating rod is provided, the rotating rod corresponds one-to-one with the planetary gear, the rotating rod is provided with external threads, the rotating rod is inserted into the threaded hole and threadedly connected to the planetary gear, and the axis of the rotating rod is parallel to the axis of the positioning post; a first limiting component is provided on the support, and the first limiting component is used to limit the rotating rod.

[0010] By adopting the above technical solution, when removing the tubes from the heat exchanger, the first limiting component limits the rotating rod, ensuring that the rotating rod and the support can only slide, not rotate relative to each other. When removing the tubes, the operator starts the motor, which drives the sun gear to rotate, causing the planetary gears to rotate. Under the action of the threads between the planetary gears and the rotating rod, the rotating rod gradually slides along its length towards the adjusting plate, causing the tubes to slide away from the tube sheet of the heat exchanger, thus removing the tubes. Using a planetary gear structure to drive the removal of the tubes not only allows for the simultaneous removal of multiple tubes, improving the convenience of heat exchanger tube removal, but also provides mutual limiting for multiple tubes, further ensuring that the axis of the rotating rod remains parallel to the axis of the tubes, thereby preventing scratches on the tube sheet.

[0011] Optionally, at least one set of the first fixing components is provided, each corresponding to one of the rotating rods. The first fixing component includes a mounting rod, a turntable, and a locking block. The mounting rod is rotatably connected to the rotating rod coaxially. The turntable is rotatably connected to the mounting rod coaxially, and has a planar thread. The turntable is fixedly connected to the rotating rod. Three locking blocks are provided along the circumference of the mounting rod. The locking blocks are slidably connected to the mounting rod, and have a planar thread that engages with the planar thread on the turntable. A second limiting component is provided on the bracket to limit the mounting rod. A second fixing component is provided on the bracket to fix the rotating rod to the planetary gear.

[0012] By adopting the above technical solution, when fixing the rotating rod and the tubes, the second limiting component limits the mounting rod, ensuring that the mounting rod and the bracket can only slide relative to each other along the length of the rotating rod, but cannot rotate relative to each other. The second fixing component fixes the rotating rod and the planetary gears, allowing the rotating rod and the planetary gears to rotate together. The operator starts the motor, which drives the sun gear to rotate, causing the planetary gears and the rotating rod to rotate together. This causes relative rotation between the turntable and the mounting rod, resulting in the locking block sliding away from the mounting rod until it abuts against the inner wall of the heat exchanger tubes, thus fixing the tubes to the rotating rod.

[0013] Optionally, the first limiting component includes an adjusting plate, an adjusting block, and a first spring; the adjusting plate is slidably connected to the bracket, and the adjusting plate has at least one through hole, which corresponds to one of the rotating rods, and the rotating rod is inserted into the through hole; the adjusting plate has at least one first fixing groove, which corresponds to one of the rotating rods, and the first fixing groove communicates with the through hole; at least one adjusting block is provided, which corresponds to one of the rotating rods, and one end of the adjusting block is slidably disposed in the first fixing groove; at least one first spring is provided, which corresponds to one of the rotating rods, and the first spring is disposed in the first fixing groove, and both ends are fixedly connected to the adjusting plate and the adjusting block, respectively; the rotating rod has a first limiting groove.

[0014] By adopting the above technical solution, when fixing the rotating rod and the tube sheet, the adjusting plate is away from the planetary carrier, and the adjusting block abuts against the rotating rod, allowing the adjusting plate and the rotating rod to rotate relative to each other. When removing the tubes from the heat exchanger, the operator pushes the adjusting plate, causing it to slide closer to the planetary carrier, connecting the first fixing groove and the first limiting groove. Under the action of the first spring, part of the adjusting block is located in the first fixing groove, and the other part is located in the first limiting groove, so that the rotating rod and the adjusting plate can only slide, but cannot rotate relative to each other. The relative motion state between the adjusting plate and the rotating rod can be changed with simple operation, allowing the drive assembly to both drive the first fixing assembly to fix the tube sheet and the rotating rod, and also drive the rotating rod to move the tube sheet away from the heat exchanger tube sheet, thereby improving the convenience of removing the heat exchanger tubes.

[0015] Optionally, at least one set of the second limiting components is provided, and each of them corresponds to one of the rotating rods. The second limiting component includes a limiting block and a limiting plate. The limiting block is fixedly connected to the bracket, and a second limiting groove is provided on the limiting block. The limiting plate is fixedly connected to the mounting rod, and the limiting plate is located in the second limiting groove and is slidably connected to the limiting block.

[0016] By adopting the above technical solution, under the action of the limiting block and the limiting plate, the mounting rod and the bracket can only slide relative to each other along the length of the rotating rod, but cannot rotate relative to each other.

[0017] Optionally, each planetary gear is provided with a second fixing groove; at least one set of the second fixing components are provided, and each corresponds to one of the rotating rods; the second fixing components include a first magnet and a second spring; the first magnet is slidably disposed in the second fixing groove; the second spring is located in the second fixing groove, and its two ends are fixedly connected to the first magnet and the planetary gear respectively; the bracket is provided with an adjustment component, which is used to adjust the position of the first magnet.

[0018] By adopting the above technical solution, when fixing the rotating rod and the planetary gears, the first magnetic block is located in the first limiting groove and abuts against the rotating rod, fixing the rotating rod and the planetary gears so that the rotating rod and the planetary gears rotate together. When removing the tubes from the heat exchanger, the position of the first magnetic block is adjusted by the adjusting component, causing the first magnetic block to slide away from the first limiting groove, so that the connection between the rotating rod and the planetary gears becomes a threaded connection.

[0019] Optionally, the adjusting assembly includes an elastic element, a telescopic rod, a second magnet, and a third spring; the elastic element is fixedly mounted on the bracket and has a hollow structure; at least one of the telescopic rod, the second magnet, and the third spring is provided, and each corresponds to one of the rotating rods; the fixed end of the telescopic rod is fixedly connected to the bracket; the second magnet is fixedly mounted on the movable end of the telescopic rod, and the second magnet and the first magnet have opposite magnetic properties; the movable end of the telescopic rod divides the interior of the fixed end of the telescopic rod into a rod-type cavity and a rodless cavity; the third spring is fixedly mounted in the rod-type cavity; the interior of the elastic element and the rodless cavity are connected by a pipe, and both the interior of the elastic element and the rodless cavity are pre-filled with liquid.

[0020] By adopting the above technical solution, when the rotating rod and the tubes are fixed, the adjusting plate is away from the planetary carrier, the elastic element is in its normal state, the telescopic rod is in a retracted state under the action of the third spring, and the first and second magnetic blocks are far apart, with no mutual attraction between them. When the heat exchanger tubes are removed, the operator pushes the adjusting plate, causing it to slide closer to the planetary carrier, thereby squeezing the elastic element. The squeezed elastic element causes the internal liquid to flow through the pipe into the rodless chamber, which in turn pushes the telescopic rod to compress the third spring and extend it. This causes the second magnetic block to slide closer to the first magnetic block, resulting in a mutual attraction between the first and second magnetic blocks.

[0021] Optionally, the distance between the end face of the adjusting block near the rotating rod and the rotating rod gradually increases in the direction away from the planetary carrier.

[0022] By adopting the above technical solution, after pulling out the tubes, the operator first starts the motor and reverses it, then pulls the adjusting plate, and finally starts the motor to reverse again to pull out other tubes. By setting the bottom of the adjusting block to an inclined structure, the adjusting block can disengage from the first limit groove and reset when the operator pulls the adjusting plate. This allows the operator to perform a simple reset operation and then repeat the tube pulling process, thereby improving the convenience of heat exchanger tube removal.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] Positioning the support by positioning columns ensures that the axis of the rotating rod remains parallel to the axis of the tubes during the tube removal process, thus preventing the tube sheet from being scratched due to tilting under force during tube removal and improving the ease of tube removal from the heat exchanger.

[0025] By setting up a drive assembly and using a planetary gear structure to drive the tubes, multiple tubes can be pulled out at the same time, improving the convenience of tube removal from the heat exchanger. At the same time, the simultaneous pulling out of multiple tubes can also provide mutual restraint, further ensuring that the axis of the rotating rod is always parallel to the axis of the tubes, thereby avoiding scratching the tube sheet.

[0026] By setting the first limiting component, the relative motion state between the adjusting plate and the rotating rod can be changed with simple operation. This allows the driving component to both drive the first fixing component to fix the tubes and the rotating rod, and drive the rotating rod to move the tubes away from the tube sheet of the heat exchanger, thereby improving the convenience of tube removal from the heat exchanger.

[0027] This invention can be used not only for removing tubes during the maintenance and replacement of tubes in straight tube heat exchangers, but also for installing tubes in both straight tube and U-tube heat exchangers during production and installation. It has a wide range of applications and is easy to use. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0029] Figure 2 This is a cross-sectional view of an embodiment of this application;

[0030] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0031] Figure 4 yes Figure 2 A magnified view of a section at point B in the middle;

[0032] Figure 5 yes Figure 2A magnified view of a section at point C.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Bracket; 11. Positioning pin; 12. Rotating rod; 121. First limiting groove;

[0035] 2. First fixing component; 21. Mounting rod; 22. Turntable; 23. Locking block;

[0036] 3. Drive assembly; 31. Sun gear; 32. Planet carrier; 33. Planet gears; 331. Second fixed slot; 34. Motor;

[0037] 4. First limiting component; 41. Adjusting plate; 411. Through hole; 412. First fixing groove; 42. Adjusting block; 43. First spring;

[0038] 5. Second limiting component; 51. Limiting block; 511. Second limiting groove; 52. Limiting plate;

[0039] 6. Second fixing component; 61. First magnet; 62. Second spring;

[0040] 7. Adjustment component; 71. Elastic element; 72. Telescopic rod; 721. Rod cavity; 722. Rodless cavity; 73. Second magnet; 74. Third spring. Detailed Implementation

[0041] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0042] This application discloses a heat exchanger tube removal device. (Refer to...) Figure 1 and Figure 2 A heat exchanger tube removal device includes a support 1, a first fixing assembly 2, and a driving assembly 3. The support 1 is a tubular structure. A positioning post 11 and a rotating rod 12 are provided on the support 1. The positioning post 11 is coaxially arranged with the support 1 and connected to it. The rotating rod 12 is connected to the support 1. The first fixing assembly 2 is disposed on the support 1 and is used to fix the rotating rod 12 and the tubes to be removed. The driving assembly 3 is disposed on the support 1 and is used to drive the rotating rod 12 to slide the tubes away from the tube sheet.

[0043] When removing tubes from the heat exchanger, the operator inserts the positioning pin 11 into a tube and the rotating rod 12 into the tube to be removed. Then, the tube to be removed is fixed to the rotating rod 12 by the first fixing component 2. Finally, the rotating rod 12 is driven by the driving component 3 to slide the tube away from the tube sheet, thereby removing the tube.

[0044] Reference Figure 2The drive assembly 3 includes a planetary carrier 32, a sun gear 31, planetary gears 33, and a motor 34. The planetary carrier 32 is fixedly mounted within a support 1. The sun gear 31 is located within the support 1, coaxially mounted with the support 1, and rotatably connected to the planetary carrier 32. A positioning pin 11 is located on the side of the sun gear 31 away from the planetary carrier 32, and coaxially fixedly connected to the sun gear 31. Three planetary gears 33 are evenly distributed along the circumference of the sun gear 31, rotatably connected to the planetary carrier 32, and all three planetary gears 33 mesh with the sun gear 31. The motor 34 is located on the side of the planetary carrier 32 away from the sun gear 31, fixedly connected to the planetary carrier 32, and its output shaft is inserted into the planetary carrier 32 and coaxially fixedly connected to the sun gear 31. Threaded holes are coaxially formed on each planetary gear 33. There are three rotating rods 12, each corresponding to a planetary gear 33. The rotating rods 12 are inserted into threaded holes and have external threads. The rotating rods 12 are threadedly connected to the planetary gears 33.

[0045] Reference Figure 2 and Figure 3 The bracket 1 is provided with a first limiting component 4, which includes an adjusting plate 41, an adjusting block 42, and a first spring 43. The adjusting plate 41 is coaxially mounted on the bracket 1 and slidably connected to the bracket 1, with its sliding axis along the length of the rotating rod 12. The adjusting plate 41 is located at the end of the rotating rod 12 away from the mounting rod 21. A handle is fixedly provided on the side of the adjusting plate 41 away from the planetary carrier 32. The adjusting plate 41 has three through holes 411, each corresponding to a rotating rod 12, and the rotating rod 12 is inserted into the through holes 411. The adjusting plate 41 has three first fixing slots 412, each corresponding to a rotating rod 12, and the first fixing slots 412 communicate with the through holes 411. Three adjusting blocks 42 are provided, each corresponding to a first fixed groove 412. One end of each adjusting block 42 is slidably disposed within the first fixed groove 412. The distance between the end face of the adjusting block 42 near the rotating rod 12 and the rotating rod 12 gradually increases in the direction away from the planetary carrier 32. Three first springs 43 are provided, each corresponding to a adjusting block 42. Each first spring 43 is located within the first fixed groove 412, and both ends are fixedly connected to the adjusting plate 41 and the adjusting block 42, respectively. The first springs 43 are in a compressed state. A first limiting groove 121 is provided on the rotating rod 12, and the length direction of the first limiting groove 121 is parallel to the length direction of the rotating rod 12.

[0046] Reference Figure 2 and Figure 4The first fixing component 2 has three sets, each corresponding to a rotating rod 12. The first fixing component 2 includes a mounting rod 21, a turntable 22, and locking blocks 23. The mounting rod 21 is coaxially rotatably connected to the rotating rod 12. The turntable 22 is coaxially disposed inside the mounting rod 21 and rotatably connected to it. The turntable 22 is fixedly connected to the rotating rod 12 and has a planar thread. Three grooves are evenly distributed along the circumference of the mounting rod 21. Three locking blocks 23 are arranged along the circumference of the mounting rod 21, each corresponding to a groove. The locking blocks 23 are slidably disposed within the grooves and have planar threads that mesh with the planar threads on the turntable 22.

[0047] Reference Figure 2 The bracket 1 is equipped with a second limiting component 5, of which three sets are provided, each corresponding to a rotating rod 12. Each second limiting component 5 includes a limiting block 51 and a limiting plate 52. The limiting block 51 is fixedly connected to the bracket 1, and a limiting groove is formed on the limiting block 51, the length direction of which is the same as the length direction of the rotating rod 12. The limiting plate 52 is fixedly connected to the mounting rod 21, one end of which is located within the limiting groove and slidably connected to the limiting block 51, with the sliding axis set along the length direction of the rotating rod 12.

[0048] Reference Figure 2 and Figure 5 Each of the three planetary gears 33 has a second fixing groove 331, which is arranged radially along the planetary gear 33. The bracket 1 is provided with three sets of second fixing components 6, each corresponding to a rotating rod 12. Each second fixing component 6 includes a first magnet 61 and a second spring 62. One end of the first magnet 61 is slidably disposed within the second fixing groove 331. The second spring 62 is disposed within the second fixing groove 331, and its two ends are fixedly connected to the planetary gear 33 and the first magnet 61, respectively.

[0049] Reference Figure 2 and Figure 5The support 1 is equipped with an adjustment assembly 7, which includes an elastic element 71, a telescopic rod 72, a second magnetic block 73, and a third spring 74. The elastic element 71 is located between the adjustment plate 41 and the planetary carrier 32 support 1, and is fixedly connected to the adjustment plate 41. The elastic element 71 has a hollow structure. There are three telescopic rods 72, each corresponding to a rotating rod 12. The fixed end of the telescopic rod 72 is fixedly located inside the support 1. There are three second magnetic blocks 73, each corresponding to a rotating rod 12. The second magnetic blocks 73 are fixedly connected to the movable end of the telescopic rod 72. The second magnetic blocks 73 and the first magnetic block 61 have opposite magnetic properties. When the telescopic rod 72 is in the extended state, there is a mutual attraction between the first magnetic block 61 and the second magnetic block 73. The movable end of the telescopic rod 72 divides the interior of the fixed end of the telescopic rod 72 into a rod-side cavity 721 and a rodless cavity 722. The rod-side cavity 721 is located between the rodless cavity 722 and the second magnetic block 73. Three third springs 74 are provided, each corresponding to a telescopic rod 72. The third spring 74 is located inside the rod cavity 721, and its two ends are fixedly connected to the movable end and the fixed end of the telescopic rod 72, respectively. The interior of the elastic element 71 and the rodless cavity 722 are connected by a pipe, and both the interior of the elastic element 71 and the rodless cavity 722 are pre-filled with liquid.

[0050] The implementation principle of a heat exchanger tube removal device according to an embodiment of this application is as follows:

[0051] Under the action of the limiting block 51 and the limiting plate 52, the mounting rod 21 and the bracket 1 can only slide relative to each other along the length direction of the rotating rod 12, but cannot rotate relative to each other.

[0052] In the initial state, the adjusting plate 41 is away from the planetary carrier 32, the elastic element 71 is in its normal state, the telescopic rod 72 is in a retracted state under the action of the third spring 74, the first magnetic block 61 and the second magnetic block 73 are away from each other, the first magnetic block 61 is located in the first limiting groove 121 and abuts against the rotating rod 12, so that the rotating rod 12 and the planetary gear 33 rotate together. Furthermore, the adjusting block 42 abuts against the rotating rod 12, and the adjusting plate 41 and the rotating rod 12 can rotate relative to each other.

[0053] When removing the tubes from the heat exchanger, the operator inserts the positioning pin 11 and the three rotating rods 12 into one tube respectively, and then starts the motor 34. The motor 34 drives the sun gear 31 to rotate, which in turn drives the planetary gears 33 and the rotating rods 12 to rotate together. Since the mounting rod 21 and the bracket 1 cannot rotate relative to each other, the rotating rod 12 causes the turntable 22 inside the mounting rod 21 to rotate relative to the mounting rod 21. Under the action of the planar thread, the three locking blocks 23 slide along the radial direction of the mounting rod 21 away from the mounting rod 21 until they abut and fix against the inner wall of the heat exchanger tubes.

[0054] The operator then pushes the adjusting plate 41, causing it to slide closer to the planetary carrier 32. This compresses the elastic element 71, causing internal liquid to flow through a pipe into the rodless chamber 722. This pushes the telescopic rod 72 to compress the third spring 74 and extend it. The extension of the telescopic rod 72 causes the second magnetic block 73 to slide closer to the first magnetic block 61. Under the mutual attraction between the first magnetic block 61 and the second magnetic block 73, the first magnetic block 61 slides away from the first limiting groove 121, creating a threaded connection between the rotating rod 12 and the planetary gear 33. The sliding of the adjusting plate 41 closer to the planetary carrier 32 connects the first fixed groove 412 and the first limiting groove 121. Under the action of the first spring 43, part of the adjusting block 42 is located in the first fixed groove 412, and the other part is located in the first limiting groove 121, allowing only relative sliding between the rotating rod 12 and the adjusting block 42, preventing relative rotation.

[0055] The operator restarts the motor 34, which drives the sun gear 31 to rotate, causing the planetary gears 33 to rotate. Since the rotating rod 12 and the adjusting plate 41 can only slide relative to each other at this time, under the action of the thread between the planetary gears 33 and the rotating rod 12, the rotating rod 12 gradually slides towards the adjusting plate 41 along its own length direction, thereby driving the mounting rod 21 and the tube sheet to slide away from the heat exchanger tube sheet, thereby pulling out the tube sheet.

[0056] After the tubes are removed, the operator first starts the motor 34 and reverses it. Under the reverse rotation of the motor 34, the rotating rod 12 slides back to its original position along its length, moving away from the adjusting plate 41. Then, the operator pulls the handle on the adjusting plate 41 to reset it. Because the distance between the end face of the adjusting block 42 near the rotating rod 12 and the rotating rod 12 gradually increases along the direction away from the planetary carrier 32, the adjusting block 42 is also pulled back to its original position when the adjusting plate 41 is reset. Furthermore, the elastic element 71, under its own elastic force... Under the action of the third spring 74, the telescopic rod 72 retracts and resets, causing the second magnetic block 73 to move away from the first magnetic block 61. Under the action of the second spring 62, the first magnetic block 61 slides into the first limit groove 121 and resets. Finally, the operator starts the motor 34 to reverse, causing the planetary gear 33 and the rotating rod 12 to rotate together, causing the turntable 22 to rotate relative to the mounting rod 21, thereby causing the locking block 23 to slide and reset along the direction close to the axis of the mounting rod 21, thus removing the tube. The operator can then continue to pull out other tubes.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A heat exchanger tube removal device, characterized in that: The device includes a support (1), a first fixing component (2), and a drive component (3). The support (1) is provided with a positioning post (11) and a rotating rod (12). The positioning post (11) is connected to the support (1) and is used to position the support (1). The rotating rod (12) is connected to the support (1). The first fixing component (2) is disposed on the rotating rod (12) and is used to fix the rotating rod (12) to the tube sheet. The drive component (3) is disposed on the support (1) and is used to drive the rotating rod (12) to slide away from the tube sheet. The drive assembly (3) includes a planet carrier (32), a sun gear (31), planet gears (33), and a motor (34); the planet carrier (32) is fixedly mounted on the support (1); the sun gear (31) is rotatably mounted on the planet carrier (32), and the positioning pin (11) is coaxially and fixedly connected to the sun gear (31); at least one planet gear (33) is provided, the planet gear (33) is rotatably connected to the planet carrier (32), and the planet gear (33) meshes with the sun gear (31); the motor (34) is fixedly connected to the planet carrier (32), and the... The motor (34) is used to drive the sun gear (31) to rotate; the planet gear (33) is coaxially provided with threaded holes; at least one rotating rod (12) is provided, the rotating rod (12) corresponds one-to-one with the planet gear (33), the rotating rod (12) is provided with external threads, the rotating rod (12) is inserted into the threaded hole and threadedly connected to the planet gear (33), the axis of the rotating rod (12) is parallel to the axis of the positioning column (11); the bracket (1) is provided with a first limiting component (4), the first limiting component (4) is used to limit the rotating rod (12); The first fixing component (2) is provided in at least one set, and corresponds one-to-one with the rotating rod (12). The first fixing component (2) includes a mounting rod (21), a turntable (22), and a locking block (23). The mounting rod (21) is coaxially rotatably connected to the rotating rod (12). The turntable (22) is coaxially rotatably connected to the mounting rod (21). The turntable (22) is provided with a planar thread. The turntable (22) is fixedly connected to the rotating rod (12). The locking block (23) is arranged along the circumference of the mounting rod (21). There are three: the locking block (23) is slidably connected to the mounting rod (21), the locking block (23) is provided with a planar thread, and the planar thread on the locking block (23) meshes with the planar thread on the turntable (22); the bracket (1) is provided with a second limiting component (5), which is used to limit the mounting rod (21); the bracket (1) is provided with a second fixing component (6), which is used to fix the rotating rod (12) to the planetary gear (33).

2. The heat exchanger tube removal device according to claim 1, characterized in that: The first limiting component (4) includes an adjusting plate (41), an adjusting block (42), and a first spring (43); the adjusting plate (41) is slidably connected to the bracket (1), and the adjusting plate (41) has at least one through hole (411) corresponding to the rotating rod (12), the rotating rod (12) being inserted into the through hole (411); the adjusting plate (41) has at least one first fixing groove (412) corresponding to the rotating rod (12), the first fixing groove (412) corresponding to the through hole (411) Connected; at least one of the adjusting blocks (42) is provided, and each one corresponds to the rotating rod (12). One end of the adjusting block (42) is slidably disposed in the first fixed groove (412); at least one of the first springs (43) is provided, and each one corresponds to the rotating rod (12). The first springs (43) are disposed in the first fixed groove (412), and both ends are fixedly connected to the adjusting plate (41) and the adjusting block (42) respectively; a first limiting groove (121) is provided on the rotating rod (12).

3. The heat exchanger tube removal device according to claim 1, characterized in that: The second limiting component (5) is provided in at least one set and corresponds one-to-one with the rotating rod (12). The second limiting component (5) includes a limiting block (51) and a limiting plate (52). The limiting block (51) is fixedly connected to the bracket (1) and a second limiting groove (511) is provided on the limiting block (51). The limiting plate (52) is fixedly connected to the mounting rod (21) and is located in the second limiting groove (511) and is slidably connected to the limiting block (51).

4. A heat exchanger tube removal device according to claim 1, characterized in that: Each planetary gear (33) is provided with a second fixing groove (331); at least one set of the second fixing components (6) are provided, and they correspond one-to-one with the rotating rod (12). The second fixing components (6) include a first magnetic block (61) and a second spring (62); the first magnetic block (61) is slidably disposed in the second fixing groove (331); the second spring (62) is located in the second fixing groove (331), and its two ends are fixedly connected to the first magnetic block (61) and the planetary gear (33) respectively; an adjustment component (7) is provided on the bracket (1), and the adjustment component (7) is used to adjust the position of the first magnetic block (61).

5. A heat exchanger tube removal device according to claim 4, characterized in that: The adjustment assembly (7) includes an elastic element (71), a telescopic rod (72), a second magnetic block (73), and a third spring (74); the elastic element (71) is fixedly mounted on the bracket (1), and the elastic element (71) has a hollow structure; at least one of the telescopic rod (72), the second magnetic block (73), and the third spring (74) are provided, and each corresponds to one of the rotating rod (12); the fixed end of the telescopic rod (72) is fixedly connected to the bracket (1); the second magnetic block (73) is fixedly mounted on the bracket (1). The second magnetic block (73) and the first magnetic block (61) are opposite in magnetism, located at the movable end of the telescopic rod (72); the movable end of the telescopic rod (72) divides the interior of the fixed end of the telescopic rod (72) into a rod cavity (721) and a rodless cavity (722); the third spring (74) is fixedly disposed in the rod cavity (721); the interior of the elastic element (71) and the rodless cavity (722) are connected by a pipe, and liquid is pre-filled in both the interior of the elastic element (71) and the rodless cavity (722).

6. A heat exchanger tube removal device according to claim 2, characterized in that: The distance between the end face of the adjusting block (42) near the rotating rod (12) and the rotating rod (12) gradually increases in the direction away from the planetary carrier (32).

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