Oil cooler maintenance and pipe replacement device with sealing detection effect

Abstract

The invention discloses an oil cooler maintaining and pipe replacing device with a sealing detection effect, and relates to the technical field of oil cooler maintaining.The oil cooler maintaining and pipe replacing device comprises a maintaining groove, a fixing ring is arranged in the maintaining groove, a gas collecting cylinder is arranged at one end of an inner ring of the fixing ring, and a gas collecting cavity is formed in the gas collecting cylinder; a plurality of air spraying heads communicated with the air collecting cavity are further arranged on the inner ring of the air collecting cylinder at equal intervals, a fixing box is arranged at the top of the fixing ring, an air conveying assembly used for conveying hot air to the air spraying heads is arranged in the fixing box, an inner core pipe is connected to the inner ring of the fixing ring in an inserted mode, and the air conveying assembly comprises a draught fan. According to the device, hot air can be accelerated and injected into the air collecting cavity by starting the air conveying assembly, and is finally sprayed on the outer surface of the inner core pipe through the air spraying head, so that stubborn oil stains and impurities condensed on the inner core pipe can be softened, the inner core pipe can be conveniently cleaned, the inner core pipe cleaning effect is improved, and the detection accuracy is improved.

Description

Technical Field

[0001] This invention relates to the field of oil cooler repair technology, specifically to an oil cooler repair and pipe replacement device with a sealing detection effect. Background Technology

[0002] An oil cooler is a surface heat exchange device specifically designed for cooling oil media such as hydraulic oil, lubricating oil, or turbine oil. It transfers heat from the oil to the cooling medium (usually water, air, or refrigerant) through heat exchange, maintaining the oil temperature within a safe operating range of 35-55℃ to ensure normal equipment operation. After long-term operation, the inner heat exchange tubes of the oil cooler may be damaged due to aging. Therefore, an oil cooler maintenance and tube replacement device is needed to replace the tubes and ensure the normal operation of the oil cooler.

[0003] Existing oil cooler repair and pipe replacement devices typically include a sealing inspection structure to detect cracks in old pipes, thus facilitating the identification of the cause of pipe damage and enabling structural improvements. In addition, existing oil cooler repair and pipe replacement devices can also clean the pipe body by friction before inspection, ensuring the accuracy of the inspection.

[0004] Although the aforementioned oil cooler repair and pipe replacement device with cleaning and detection functions has a good pipe replacement effect, a large amount of solidified and stubborn oil stains and impurities will adhere to the pipe body. Therefore, relying solely on the hard friction of the cleaning component can easily lead to damage to the cleaning component and incomplete cleaning of the pipe. To address these issues, we have designed an oil cooler repair and pipe replacement device with a sealing detection function. Summary of the Invention

[0005] The purpose of this invention is to provide a cooler repair and pipe replacement device with sealing detection effect, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides a cooler repair and pipe replacement device with sealing detection effect, including a repair groove, a fixing ring in the repair groove, an air collecting cylinder at one end of the inner ring of the fixing ring, an air collecting chamber in the air collecting cylinder, and multiple jet nozzles connected to the air collecting chamber at equal intervals on the inner ring of the air collecting cylinder. A fixing box is provided on the top of the fixing ring, and an air supply component for supplying hot air to the jet nozzles is provided in the fixing box. An inner core tube is inserted into the inner ring of the fixing ring.

[0007] Furthermore, the gas delivery assembly includes a fan, the top of the fixed box has an installation port communicating with the interior, the fan is installed in the installation port, a serpentine tube is installed inside the fixed box, the bottom end of the serpentine tube extends into the gas collection chamber, the fixed box also has an installation component, the top end of the serpentine tube is fixedly inserted into the installation component and located below the fan, the top of the installation component has a heating block, and an electric heating wire is installed inside the heating block.

[0008] Furthermore, the inner ring of the serpentine tube is also provided with a serpentine airbag tube, and a sandwich cavity is opened inside the serpentine airbag tube. An air guide box is provided on one side of the fixed box, and a one-way air inlet valve connected to the interior is provided on the top of the air guide box. An air guide pipe is fixedly inserted into one side of the air guide box, and the other end of the air guide pipe extends into the sandwich cavity. A first solenoid valve is provided on the air guide pipe. A pull rod is slidably inserted into one side of the air guide box, and a piston is provided at one end of the pull rod. The piston is slidably disposed in the air guide box.

[0009] Furthermore, there are two air tubes, and the two air tubes are respectively inserted into the two bends of the serpentine airbag tube.

[0010] Furthermore, a spring is provided between the piston and the inner wall of the air guide box, and the spring is movably sleeved on the pull rod.

[0011] Furthermore, a pull block is provided at the end of the pull rod away from the piston. The diameter of the pull block is much larger than the diameter of the pull rod, and the outer surface of the pull block is provided with anti-slip texture.

[0012] Furthermore, it also includes a cleaning component for cleaning softened oil stains and impurities on the surface of the inner core tube. The cleaning component includes a limiting ring, which is located at the end of the inner ring of the fixing ring away from the air collecting cylinder. The inner ring of the limiting ring is provided with an airbag ring, which has a fixed cavity. The inner ring of the airbag ring is provided with cleaning cotton. An L-shaped tube is fixedly inserted into one side of the air guide box. The other end of the L-shaped tube is fixedly inserted into the fixing ring and extends into the fixed cavity inside the airbag ring. A second solenoid valve is also provided on the L-shaped tube. The inner core tube is slidably inserted into the inner ring of the cleaning cotton.

[0013] Furthermore, two rotating rollers are symmetrically arranged at one end of the maintenance slot along a vertical line. Each of the two rotating rollers has an adapter groove. The two adapter grooves are combined to fit the inner core tube. A motor is provided on the front side of the maintenance slot. The drive shaft of the motor is connected to one end of one of the rotating rollers.

[0014] Furthermore, a fixing member is provided below the maintenance slot, and cylinders are provided at both ends of the bottom of the fixing member in the vertical direction. The driving end of the cylinder slides through the fixing member and is fixedly connected to the bottom of the maintenance slot.

[0015] Furthermore, a detection ring is provided at the end of the maintenance groove away from the rotating roller, and a CCD detection camera is provided on all four sides of the inner ring of the detection ring.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: by turning on the air supply component, hot air can be accelerated and injected into the air collection chamber, and finally sprayed onto the outer surface of the inner core tube through the jet nozzle, which can soften the stubborn oil stains and impurities condensed on the inner core tube, making it easier to clean and improving the cleaning effect of the inner core tube, thereby improving the detection accuracy.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: by pushing and pulling the block, the piston can be made to move horizontally back and forth in the air guide box. During this process, outside air will be drawn into the air guide box. Then, the first solenoid valve is opened, which allows air to be injected into the interlayer cavity through the air guide tube. This narrows the inner diameter of the serpentine airbag tube and accelerates the air flowing in the inner ring of the serpentine airbag tube, thereby further improving the softening effect on the stubborn oil stains and impurities that have condensed on the outer surface of the inner core tube.

[0018] Compared with the prior art, the beneficial effect of the present invention is that by setting two air guide tubes, and the two air guide tubes are located at the two bends of the serpentine airbag tube, the air intake at the bends can be guaranteed to be the same, thereby reducing the problem of uneven air intake in the serpentine airbag tube. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention viewed from the outside; Figure 2 This is a side view of the external three-dimensional structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the present invention viewed from below. Figure 4 This is a three-dimensional structural diagram of the outer part of the fixing ring of the present invention; Figure 5 This is a three-dimensional structural schematic diagram of a half-section view of the side of the gas collecting cylinder of the present invention; Figure 6 This is a three-dimensional structural schematic diagram showing a half-section of the interior of the fixing box and the air guide box of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Maintenance slot; 2. Fixing ring; 3. Air collection cylinder; 4. Jet nozzle; 5. Air collection chamber; 6. Fixing box; 7. Mounting port; 8. Fan; 9. Serpentine tube; 10. Mounting component; 11. Heating block; 12. Serpentine airbag tube; 13. Interlayer cavity; 14. Air guide box; 15. One-way air intake valve; 16. Air guide tube; 17. First solenoid valve; 18. Pull rod; 19. Piston; 20. Spring; 21. Pull block; 22. Limiting ring; 23. Airbag ring; 24. Cleaning cotton; 25. L-shaped tube; 26. Rotating roller; 27. Adaptor slot; 28. Motor; 29. ​​Inner core tube; 30. Fixing component; 31. Cylinder; 32. Detection ring; 33. CCD detection camera; 34. Second solenoid valve. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0024] Please see Figure 1-7The present invention provides a technical solution: a cooler repair and pipe replacement device with sealing detection effect, including a repair groove 1, a fixing ring 2 is provided in the repair groove 1, an air collecting cylinder 3 is provided at one end of the inner ring of the fixing ring 2, an air collecting chamber 5 is opened in the air collecting cylinder 3, and a plurality of jet nozzles 4 connected to the air collecting chamber 5 are also provided at equal intervals on the inner ring of the air collecting cylinder 3. A fixing box 6 is provided on the top of the fixing ring 2, and an air supply component for supplying hot air to the jet nozzles 4 is provided in the fixing box 6. An inner core tube 29 is inserted into the inner ring of the fixing ring 2. The gas delivery assembly includes a fan 8. The top of the fixed box 6 has an installation port 7 that communicates with the interior. The fan 8 is installed in the installation port 7. A serpentine tube 9 is installed inside the fixed box 6. The bottom end of the serpentine tube 9 extends into the gas collection chamber 5. The fixed box 6 also has an installation component 10. The top end of the serpentine tube 9 is fixedly inserted into the installation component 10 and is located below the fan 8. A heating block 11 is installed on the top of the installation component 10. An electric heating wire is installed inside the heating block 11. Two rotating rollers 26 are symmetrically rotated along a vertical line at one end of the maintenance slot 1. Each of the two rotating rollers 26 has an adapter groove 27. The two adapter grooves 27 are combined to fit the inner core tube 29. A motor 28 is installed on the front side of the maintenance slot 1. The drive shaft of the motor 28 is connected to one end of one of the rotating rollers 26.

[0025] In practice, the maintenance slot 1 is moved to the side of the oil cooler, and the outer shell of the oil cooler is disassembled. Then, the damaged inner core tube 29 is pushed out a little, so that the inner core tube 29 is stuck in the two fitting slots 27. At this time, the drive shaft of the motor 28 is turned on to drive the rotating roller 26 to rotate, so that the two rotating rollers 26 rotate relative to each other, and the inner core tube 29 can be pulled out in the two rotating rollers 26. According to the above principle, a new inner core tube 29 can also be inserted into the oil cooler, thus realizing the effect of automatically replacing the tubes of the oil cooler and reducing the workload of personnel. During the above operation, by turning on the fan 8 and the heating block 11, outside air can be drawn into the fixed box 6 and mixed with the heat generated by the heating block 11. Then, the hot air is injected into the air collection chamber 5 through the serpentine tube 9, and finally sprayed onto the outer surface of the inner core tube 29 through the jet nozzle 4. This softens the stubborn oil stains and impurities that have condensed on the inner core tube 29, making it easier to clean and improving the cleaning effect of the inner core tube 29, thereby improving the accuracy of the test.

[0026] See Figure 1-7The inner ring of the serpentine tube 9 is also provided with a serpentine airbag tube 12. The serpentine airbag tube 12 has a sandwich cavity 13. A guide box 14 is provided on one side of the fixed box 6. A one-way air inlet valve 15 connected to the inside is provided on the top of the guide box 14. A guide tube 16 is fixedly inserted into one side of the guide box 14. The other end of the guide tube 16 extends into the sandwich cavity 13. A first solenoid valve 17 is provided on the guide tube 16. A pull rod 18 is slidably inserted into one side of the guide box 14. A piston 19 is provided at one end of the pull rod 18. The piston 19 is slidably disposed in the guide box 14.

[0027] In practice, based on the above implementation, personnel push and pull the lever 18, which causes the piston 19 to reciprocate horizontally within the air guide box 14. During this process, outside air is drawn into the air guide box 14. Then, the first solenoid valve 17 is opened, allowing air to be injected into the interlayer cavity 13 through the air guide tube 16. This narrows the inner diameter of the serpentine airbag tube 12, accelerating the airflow within the inner ring of the serpentine airbag tube 12, thereby further improving the softening effect on stubborn oil stains and impurities condensed on the outer surface of the inner core tube 29.

[0028] See Figure 1-7 There are two air tubes 16, and the two air tubes 16 are respectively inserted into the two bends of the serpentine airbag tube 12.

[0029] In specific implementation, based on the above implementation, by setting two air guide tubes 16, and the two air guide tubes 16 are located at the two bends of the serpentine airbag tube 12, the air intake at the bends can be guaranteed to be the same, thereby reducing the problem of uneven air intake in the serpentine airbag tube 12.

[0030] It should also be noted that an air release valve needs to be installed on the airbag ring 23. Opening the air release valve can release the air inside the airbag ring 23 for convenient use next time.

[0031] See Figure 1-7 A spring 20 is also provided between the piston 19 and the inner wall of the air guide box 14. The spring 20 is movably sleeved on the pull rod 18. When the piston 19 is pulled to the inner end of the air guide box 14, the pull rod 18 is released, and the spring 20 can push the piston 19 back to its original position due to its own elasticity. This makes it easier for personnel to pull the pull rod 18 back and forth.

[0032] See Figure 1-7 A pull block 21 is provided at the end of the pull rod 18 away from the piston 19. The diameter of the pull block 21 is much larger than the diameter of the pull rod 18, and the outer surface of the pull block 21 is provided with anti-slip texture. By pulling the pull block 21, the pull block 21 can drive the pull rod 18 to move, which can better apply force when the person pulls the pull rod 18.

[0033] See Figure 1-7It also includes a cleaning component for cleaning softened oil stains and impurities on the surface of the inner core tube 29. The cleaning component includes a limiting ring 22, which is located at the end of the inner ring of the fixed ring 2 away from the air collecting cylinder 3. An airbag ring 23 is provided in the inner ring of the limiting ring 22. A fixed cavity is opened in the airbag ring 23. A cleaning cotton 24 is provided in the inner ring of the airbag ring 23. An L-shaped tube 25 is fixedly inserted into one side of the air guide box 14. The other end of the L-shaped tube 25 is fixedly inserted into the fixed ring 2 and extends into the fixed cavity in the airbag ring 23. A second solenoid valve 34 is also provided on the L-shaped tube 25. The inner core tube 29 is slidably inserted into the inner ring of the cleaning cotton 24.

[0034] In practice, based on the above implementation, after the stubborn oil stains and impurities that have solidified on the outer surface of the inner core tube 29 have softened, the first solenoid valve 17 can be closed and the second solenoid valve 34 can be opened. Air can then be injected into the airbag ring 23 through the L-shaped tube 25 according to the above principle. This will cause the inner diameter of the airbag ring 23 to shrink, allowing the cleaning cotton 24 to wrap around the surface of the inner core tube 29. The movement of the inner core tube 29 and the friction between it and the cleaning cotton 24 can easily wipe away the softened oil stains and impurities on the inner core tube 29, ensuring the accuracy of subsequent crack detection.

[0035] For the interlayer cavity 13 inside the serpentine airbag tube 12 and the fixing cavity inside the airbag ring 23, we can set interlayers in both the serpentine airbag tube 12 and the airbag ring 23, so that the serpentine airbag tube 12 and the airbag ring 23 are double-layered. The interlayer can replace the interlayer cavity 13 and the fixing cavity to receive the gas delivered from the air guide box 14. In addition, for parts installed inside other components, the components can be divided in half, so that cavities and grooves can be opened in the components. Then the parts are installed in the components, and finally the half components are assembled and fixed.

[0036] See Figure 1-7 A fixing component 30 is provided below the maintenance slot 1. Cylinders 31 are provided at both ends of the bottom of the fixing component 30 in the vertical direction. The driving end of the cylinder 31 slides through the fixing component 30 and is fixedly connected to the bottom of the maintenance slot 1.

[0037] In specific implementation, based on the above implementation, by opening the cylinder 31, the drive end of the cylinder 31 can extend and retract, thereby raising and lowering the maintenance slot 1, which can replace the inner core tubes 29 at different heights in the oil cooler. By pushing the fixing part 30, the position of the maintenance slot 1 can be adjusted, and different inner core tubes 29 in the horizontal direction of the oil cooler can be replaced.

[0038] See Figure 1-7 A detection ring 32 is also provided at the end of the maintenance groove 1 away from the rotating roller 26, and a CCD detection camera 33 is provided on all four sides of the inner ring of the detection ring 32.

[0039] In practice, based on the above implementation, multiple CCD inspection cameras 33 are finally turned on, which allows the multiple CCD inspection cameras 33 to work together to detect cracks on the inner core tube 29 from all directions, thus achieving the effect of sealing inspection.

[0040] Before use, all electrical components involved in the oil cooler maintenance and pipe replacement device need to be connected to an external power source, or a battery pack should be installed in an area outside the maintenance tank 1 that does not obstruct other components. Then, the battery pack and electrical components are connected via wiring. It is also necessary to avoid the wiring from becoming tangled due to the movement of the components. Wiring needs to be buried and planned and organized to provide power to the electrical components, thereby ensuring their normal operation and switching. Since connecting the electrical components to an external power source or setting up a battery pack for power supply are existing technologies and are not problems that need to be solved in the background technology of this manual, they will not be explained in detail.

[0041] Working principle: When in use, first move the maintenance slot 1 to the side of the oil cooler and disassemble the outer shell of the oil cooler. Then push out the damaged inner core tube 29 a little and make the inner core tube 29 stuck in the two adapter slots 27. At this time, turn on the drive shaft of the motor 28 to drive the rotating roller 26 to rotate, so that the two rotating rollers 26 rotate relative to each other. Then the inner core tube 29 can be pulled out in the two rotating rollers 26. Following the above principle, a new inner core tube 29 can also be inserted into the oil cooler, thus realizing the effect of automatically replacing the tubes of the oil cooler and reducing the workload of personnel.

[0042] During the above operation, by turning on the fan 8 and the heating block 11, outside air can be drawn into the fixed box 6 and mixed with the heat generated by the heating block 11. Then, the hot air is injected into the air collection chamber 5 through the serpentine tube 9, and finally sprayed onto the outer surface of the inner core tube 29 through the jet nozzle 4. This softens the stubborn oil stains and impurities that have condensed on the inner core tube 29, making it easier to clean and improving the cleaning effect of the inner core tube 29, thereby improving the accuracy of the test.

[0043] In addition, when personnel push and pull the lever 21, the lever 21 can drive the lever 18 and the piston 19 to move horizontally back and forth in the air guide box 14. During this process, outside air will be drawn into the air guide box 14. Then, the first solenoid valve 17 is opened, which allows air to be injected into the interlayer cavity 13 through the air guide tube 16. This narrows the inner diameter of the serpentine airbag tube 12 and accelerates the air flowing in the inner ring of the serpentine airbag tube 12, thereby further improving the softening effect on the stubborn oil stains and impurities that have condensed on the outer surface of the inner core tube 29.

[0044] It should be noted that by setting two air guide tubes 16, and the two air guide tubes 16 are located at the two bends of the serpentine airbag tube 12, the air intake at the bends can be guaranteed to be the same, thereby reducing the problem of uneven air intake in the serpentine airbag tube 12.

[0045] After the stubborn oil stains and impurities that have solidified on the outer surface of the inner core tube 29 soften, the first solenoid valve 17 can be closed and the second solenoid valve 34 can be opened. Air can then be injected into the airbag ring 23 through the L-shaped tube 25 according to the above principle. This will cause the inner diameter of the airbag ring 23 to shrink, allowing the cleaning cotton 24 to wrap around the surface of the inner core tube 29. The movement of the inner core tube 29 and the friction between it and the cleaning cotton 24 can easily wipe away the softened oil stains and impurities on the inner core tube 29, ensuring the accuracy of subsequent crack detection.

[0046] Finally, multiple CCD inspection cameras 33 are activated, allowing them to work together to inspect cracks on the inner core tube 29 from all angles, achieving the effect of sealing inspection. It should also be noted that by activating cylinder 31, the drive end of cylinder 31 can extend and retract, causing the maintenance slot 1 to rise and fall, allowing the replacement of inner core tubes 29 at different heights in the oil cooler. By pushing the fixing part 30, the position of the maintenance slot 1 can be adjusted, allowing the replacement of different inner core tubes 29 in the horizontal direction of the oil cooler.

[0047] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A repair and pipe replacement device for an oil cooler with sealing detection function, comprising a repair tank (1), characterized in that, The maintenance slot (1) is provided with a fixing ring (2), and an air collecting cylinder (3) is provided at one end of the inner ring of the fixing ring (2). An air collecting chamber (5) is provided in the air collecting cylinder (3). The inner ring of the air collecting cylinder (3) is also provided with a plurality of jet heads (4) that are connected to the air collecting chamber (5) at equal intervals. A fixing box (6) is provided at the top of the fixing ring (2). An air supply component for supplying hot air to the jet heads (4) is provided in the fixing box (6). An inner core tube (29) is inserted into the inner ring of the fixing ring (2).

2. The oil cooler repair and pipe replacement device with sealing detection effect as described in claim 1, characterized in that: The gas delivery assembly includes a fan (8). The top of the fixed box (6) is provided with an installation port (7) that communicates with the interior. The fan (8) is installed in the installation port (7). A serpentine tube (9) is provided in the fixed box (6). The bottom end of the serpentine tube (9) extends into the gas collection chamber (5). An installation component (10) is also provided in the fixed box (6). The top end of the serpentine tube (9) is fixedly inserted into the installation component (10) and is located below the fan (8). A heating block (11) is provided on the top of the installation component (10). An electric heating wire is provided in the heating block (11).

3. The oil cooler repair and pipe replacement device with sealing detection effect as described in claim 2, characterized in that: The inner ring of the serpentine tube (9) is also provided with a serpentine airbag tube (12), and a sandwich cavity (13) is opened in the serpentine airbag tube (12). A guide box (14) is provided on one side of the fixed box (6). A one-way air inlet valve (15) connected to the inside is provided on the top of the guide box (14). A guide tube (16) is fixedly inserted on one side of the guide box (14). The other end of the guide tube (16) extends into the sandwich cavity (13). A first solenoid valve (17) is provided on the guide tube (16). A pull rod (18) is slidably inserted on one side of the guide box (14). A piston (19) is provided at one end of the pull rod (18). The piston (19) is slidably disposed in the guide box (14).

4. The oil cooler repair and pipe replacement device with sealing detection effect as described in claim 3, characterized in that: The number of air tubes (16) is two, and the two air tubes (16) are respectively inserted into the two bends of the serpentine airbag tube (12).

5. A cooler repair and pipe replacement device with sealing detection effect as described in claim 3, characterized in that: A spring (20) is also provided between the piston (19) and the inner wall of the air guide box (14), and the spring (20) is movably sleeved on the pull rod (18).

6. The oil cooler repair and pipe replacement device with sealing detection effect as described in claim 3, characterized in that: The end of the pull rod (18) away from the piston (19) is provided with a pull block (21). The diameter of the pull block (21) is much larger than the diameter of the pull rod (18). The outer surface of the pull block (21) is provided with anti-slip texture.

7. A cooler repair and pipe replacement device with sealing detection effect as described in claim 3, characterized in that: It also includes a cleaning component for cleaning softened oil stains and impurities on the surface of the inner core tube (29). The cleaning component includes a limiting ring (22), which is located at the end of the inner ring of the fixing ring (2) away from the air collecting cylinder (3). An airbag ring (23) is provided in the inner ring of the limiting ring (22). A fixing cavity is opened in the airbag ring (23). A cleaning cotton (24) is provided in the inner ring of the airbag ring (23). An L-shaped tube (25) is fixedly inserted into one side of the air guide box (14). The other end of the L-shaped tube (25) is fixedly inserted into the fixing ring (2) and extends into the fixing cavity in the airbag ring (23). A second solenoid valve (34) is also provided on the L-shaped tube (25). The inner core tube (29) is slidably inserted into the inner ring of the cleaning cotton (24).

8. A cooler repair and pipe replacement device with sealing detection effect as described in claim 1, characterized in that: Two rotating rollers (26) are symmetrically rotated along a vertical line at one end of the maintenance groove (1). Each of the two rotating rollers (26) has an adapter groove (27). The two adapter grooves (27) are combined to fit the inner core tube (29). A motor (28) is provided on the front side of the maintenance groove (1). The drive shaft of the motor (28) is connected to one end of one of the rotating rollers (26).

9. A cooler repair and pipe replacement device with sealing detection effect as described in claim 1, characterized in that: A fixing member (30) is provided below the maintenance slot (1). A cylinder (31) is provided at both ends of the bottom of the fixing member (30) in the vertical direction. The driving end of the cylinder (31) slides through the fixing member (30) and is fixedly connected to the bottom of the maintenance slot (1).

10. A cooler repair and pipe replacement device with sealing detection effect as described in claim 8, characterized in that: A detection ring (32) is also provided at one end of the maintenance groove (1) away from the rotating roller (26), and a CCD detection camera (33) is provided on all four sides of the inner ring of the detection ring (32).

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