A cable tube for high voltage power cable protection and an automated detection device thereof

Abstract

The application discloses a cable tube for high-voltage power cable protection and an automatic detection device thereof, and belongs to the technical field of cable tubes, which is used for solving the problems of insufficient performance, low detection efficiency, poor impurity cleaning effect and inconvenient component maintenance of the existing cable tube, and adopting a modified composite base material layered structure, a high-voltage-resistant insulating coating and a corrosion-resistant lining layer are arranged in the inner layer, and a reinforcing rib and an impact-resistant buffer layer are combined in the outer layer, the automatic detection device comprises a rack, a fixed side plate, an ultrasonic flaw detector, a camera, a cleaning assembly, a controller and a display screen and the like, the cleaning assembly can clean the impurities on the surface of the cable tube, the ultrasonic flaw detector and the camera can realize continuous detection of multiple parameters of the whole length of the cable tube, the cleaning assembly can be conveniently disassembled, maintained and adjusted, the detection angle of the device can be adjusted to adapt to cable tubes of different specifications, the device realizes the integration of detection and cleaning as a whole, improves the detection efficiency and accuracy, reduces the labor input, guarantees the quality of the cable tube and is suitable for the laying scene of high-voltage power cables.

Description

Technical Field

[0001] This invention relates to the field of cable conduit technology, and in particular to a cable conduit for the protection of high-voltage power cables and its automated testing device. Background Technology

[0002] High-voltage power cables are a core component of power transmission systems. During installation, they require protection from cable conduits to prevent damage from external mechanical impacts and corrosion, ensuring the safety and stability of power transmission. Currently, most high-voltage power cable protection conduits on the market are made of a single substrate with a relatively simple structural design. In practical use, they cannot simultaneously meet the requirements for high-voltage insulation, impact resistance, and corrosion resistance. Over time, this can lead to decreased insulation performance and conduit damage, ultimately affecting the normal operation of the cable.

[0003] Meanwhile, after the cable conduit is manufactured, it needs to undergo comprehensive quality inspection to eliminate unqualified products and ensure that the cable conduits put into use meet the standards. Current inspection methods largely rely on manual operation. During the inspection process, personnel must manually check the cable conduit's appearance, dimensions, internal structure, and insulation performance parameters one by one. This process is susceptible to human error, making it difficult to achieve continuous testing of the entire cable conduit's length and multiple parameters. Furthermore, the consistency and accuracy of the test results are difficult to guarantee, and the inspection process is time-consuming, making it unsuitable for the testing needs of large-scale production.

[0004] Furthermore, dust, dirt, and other impurities easily remain on the surface of cable conduits. If these impurities are not cleaned before testing, the accuracy of the test results will be affected. In the current testing process, impurity cleaning is mostly done manually, which is inefficient and makes it difficult to guarantee the cleaning effect. At the same time, the components used for cleaning impurities will wear out after long-term use and need to be replaced and cleaned regularly. However, the existing methods for installing and disassembling cleaning components are cumbersome, increasing the maintenance workload. Summary of the Invention

[0005] This invention addresses the shortcomings of traditional high-voltage power cable protection pipes, including insufficient performance, low detection efficiency, poor impurity removal, and inconvenient component maintenance. During the development process, it was discovered that existing technologies cannot simultaneously meet the comprehensive requirements of high-voltage insulation, impact resistance, and corrosion resistance; while devices employing a single detection method cannot achieve full-angle, multi-parameter detection, and lack a surface cleaning step before detection, resulting in low detection accuracy.

[0006] This invention proposes a technical approach for a four-layer composite structure cable conduit and an integrated automated testing and cleaning device. Through the organic integration of material modification, structural optimization and intelligent testing, the performance and production quality of the cable conduit are improved simultaneously. The invention provides a cable conduit for high-voltage power cable protection and its automated testing device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A cable conduit for the protection of high-voltage power cables is disclosed. The cable conduit adopts a modified composite substrate layered structure, with an inner layer of high-voltage resistant insulating coating and anti-corrosion lining, and an outer layer of composite reinforcing ribs and impact-resistant buffer layer. The layered structure can simultaneously improve the high-voltage insulation, impact resistance and corrosion resistance of the cable conduit, avoid problems such as damage and decreased insulation performance of the cable conduit after long-term use, and ensure the long-term safe and stable operation of high-voltage power cables.

[0008] An automated testing device is used to inspect a high-voltage power cable protection cable conduit as described above. It includes a frame, with two symmetrically arranged fixed side plates fixedly installed on one side of the top of the frame. Two symmetrically arranged connecting horizontal plates I are fixedly installed between the two fixed side plates. An ultrasonic flaw detector is fixedly installed on one side of each connecting horizontal plate I. Multiple support columns are fixedly installed on the top of the frame, and a mounting frame is fixedly installed on one side of each support column. A rotating frame is rotatably connected to one side of each mounting frame via a rotating shaft. A camera is fixedly installed at one end of the rotating frame. A fixing pin is threaded through one side of the mounting frame, and one side of the fixing pin abuts against the outer wall of the rotating frame to limit the angle of the rotating frame. The ultrasonic flaw detector can perform full-length flaw detection on the cable conduit, identifying internal structural defects such as cracks, pores, delamination, and inclusions. The camera can perform visual inspection of the outer wall of the cable conduit. The rotating frame can adjust the angle of the camera, and the fixing pin can lock the detection angle to ensure no blind spots in the inspection.

[0009] In one possible design, two symmetrically arranged support side plates are fixedly installed on the top of the frame. A sliding vertical plate is detachably connected to the inner wall of one side of the support side plate by bolts. A protective cover is fixedly connected to one side of the sliding vertical plate. A mounting box is fixedly connected to one side of the protective cover. A cleaning component for cleaning the cable conduit is provided inside the mounting box. The sliding vertical plate is detachably connected by bolts, which facilitates the disassembly and maintenance of the protective cover, mounting box, and cleaning component. The cleaning component can remove impurities from the surface of the cable conduit to avoid interfering with the detection accuracy.

[0010] In one possible design, the cleaning component includes a strip-shaped groove formed on one side of the mounting box. A limiting baffle is fixedly installed on one side of the mounting box. Two symmetrically arranged strip-shaped sliders slide through the interior of the strip-shaped groove. One end of each strip-shaped slider is fixedly connected to an L-shaped side plate. Two symmetrically arranged guide plates are fixedly installed on the top of the mounting box. The L-shaped side plate is slidably connected to the top of the guide plate. The guide plate can limit and guide the sliding trajectory of the strip-shaped sliders to ensure smooth sliding. The limiting baffle can prevent the strip-shaped sliders from sliding excessively and detaching from the strip-shaped groove.

[0011] In one possible design, triangular blocks are fixedly connected to both sides of the mounting box via connecting rods. A connecting block is fixedly connected to one side of the strip slider, and a rack is fixedly installed on one side of the connecting block. A drive shaft is rotatably connected to one side of the inner wall of the mounting box via a bearing. A gear is fixedly sleeved on the outer wall of the drive shaft, and the gear meshes with two racks. A servo motor II is fixedly installed inside the protective cover. The output shaft of the servo motor II is fixedly connected to one end of the drive shaft. The servo motor II can drive the drive shaft to rotate the gear. The gear drives the two racks to move closer or further apart through meshing transmission, thereby driving the strip slider to slide synchronously, realizing the opening and closing of the cleaning component.

[0012] In one possible design, two symmetrically arranged guide rods are fixedly installed on one side of the strip slider. The guide rods are arranged perpendicularly to the sliding direction of the strip slider. The outer walls of the two guide rods are slidably fitted with the same connecting horizontal plate II. A connecting plate is fixedly connected to one side of the connecting horizontal plate II. A limiting scraper is fixedly installed at one end of the connecting plate. The inclined surface of the triangular block is located inside the connecting plate and abuts against one side of the limiting scraper. The connecting plate has strip holes I and II inside. Strip holes I and II are perpendicular to each other and communicate with each other. The limiting scraper can fit against the outer wall of the cable pipe to scrape off residual dust and dirt on the surface. The triangular block can limit and adjust the limiting scraper to ensure fitting accuracy. Strip holes I and II can accommodate positional deviations during component adjustment.

[0013] In one possible design, two symmetrically arranged limiting rectangular plates are also included. A limiting circular groove is formed on one side of the limiting rectangular plate. The limiting circular groove is used to cooperate with one end of the guide rod. A limiting ring II and a limiting ring I are slidably sleeved on the outer wall of the guide rod. The same compression spring is provided between the limiting ring II and the limiting ring I. The limiting circular groove can limit the guide rod, and the compression spring can provide elastic buffering during the movement of the component, reduce structural wear, and extend the service life of the component.

[0014] In one possible design, a positioning groove is provided on one side of the limiting rectangular plate, and two symmetrically arranged fixing crossbars are fixedly installed on one side of the strip slider. A rectangular groove is provided on one side of the fixing crossbar, and a pressure plate is slidably connected inside the rectangular groove. A slot is provided on one side of the pressure plate, and two symmetrically arranged positioning protrusions are fixedly installed on the inner wall of one side of the slot. The positioning protrusions engage with the positioning groove, and the slot cooperates with the limiting rectangular plate. The engagement of the positioning protrusions with the positioning groove can realize the positioning and fixing of the limiting rectangular plate. The pressure plate can press and limit the limiting rectangular plate to prevent it from loosening and facilitate later disassembly and maintenance. A protective cover is fixedly installed on one side of the fixing crossbar, and a clearance notch is provided inside the protective cover. An operating rod is fixedly installed on one side of the pressure plate, and a strip block is fixedly installed on the outer wall of the operating rod. One end of the operating rod passes through the clearance notch and is fixedly installed with an operating block. The strip block cooperates with the clearance notch. A tension spring is provided between one side of the pressure plate and one side of the inner wall of the rectangular groove.

[0015] In one possible design, a mounting frame is fixedly installed on one side of the top of the frame, a mounting plate is fixedly connected to one side of the mounting frame, a controller is fixedly installed on the mounting plate, and a display screen is fixedly installed on one side of the frame. The controller can uniformly control the operating status of all electrical components of the device, and the display screen can display the detection data, defect location, and equipment operating parameters in real time, so that the staff can keep abreast of the detection situation and improve the detection efficiency.

[0016] In this application, during use, one end of the cable pipe to be inspected is first passed between multiple limiting scrapers. The limiting scrapers will scrape off the dust and dirt remaining on the surface of the cable pipe. At this time, one end of the cable pipe passes through multiple cameras for visual inspection, which can inspect the outer wall of the cable pipe. The number, angle and placement of the cameras can be adjusted according to the requirements to ensure the inspection range. Then, two ultrasonic flaw detectors are used to detect structural defects such as cracks, pores, delamination and inclusions inside the pipe. After the inspection is completed, multiple limiting scrapers need to be separated. This not only facilitates the insertion of the next pipe, but also helps to quickly clean up residual dust and dirt. The specific operation is as follows: Servo motor II can be started. The output shaft of servo motor II drives the drive shaft to rotate. The drive shaft drives the gear to rotate. The gear drives the two racks to move away from each other. The two racks drive the connecting block to move laterally. The connecting block drives the strip slider to move laterally. At the same time, one side of the limiting scraper abuts against the inclined surface of the triangular block. At this time, the limiting scraper drives the connecting plate and the connecting horizontal plate II to move laterally. The connecting horizontal plate II slides on the two guide rods. The limiting rectangular plate moves inside the strip hole I. At this time, the limiting scrapers on both sides move away synchronously, which facilitates the insertion of the pipe. If the limiting scraper needs to be replaced, the operating block can be rotated. The operating block drives the operating rod to rotate, and the operating rod drives the strip block to rotate. The strip block moves from the inside of the protective cover to correspond to the clearance notch. Since the tension spring is in a stretched state, the tension of the tension spring drives the pressure plate to move into the inside of the rectangular groove. At this time, the pressure plate no longer blocks one side of the limiting rectangular plate, and the positioning protrusion moves out from the inside of the positioning groove. At this time, the braking state of the limiting rectangular plate can be released. At this point, the two limiting rectangular plates can be moved to the position where the pressing plate leaves, and the guide rod will move away from the limiting circular groove. The two limiting rectangular plates can then be moved away and removed. At this point, the limiting ring II, the compression spring, and the limiting ring I can be moved out as a whole. The limiting scraper can then be moved out as a whole, making it convenient to clean or replace the limiting scraper.

[0017] Beneficial effects: The cable conduit of this application adopts a modified composite substrate layered structure. The inner layer is provided with a high-voltage resistant insulating coating and an anti-corrosion lining, and the outer layer is a composite reinforcing rib and an impact-resistant buffer layer. Through the reasonable combination of the layered structure, the cable conduit has good high-voltage insulation performance, corrosion resistance and impact resistance. It can effectively resist the erosion and mechanical impact of the external environment on the cable conduit, extend the service life of the cable conduit, and thus ensure the long-term safe and stable operation of high-voltage power cables, making it suitable for the laying scenarios of high-voltage power cables.

[0018] The automated inspection device of this application can perform comprehensive inspection of the aforementioned cable pipes. The device integrates inspection components such as an ultrasonic flaw detector and a camera. The ultrasonic flaw detector can detect structural defects such as cracks, pores, delamination, and inclusions inside the cable pipe, while the camera can perform visual inspection of the outer wall of the cable pipe. This enables continuous inspection of the cable pipe from one end to the other and can simultaneously acquire various defect parameters of its internal structure and appearance. This eliminates the need for manual inspection and effectively improves the efficiency and accuracy of the inspection.

[0019] The cleaning component of the device can remove dust, dirt, and other impurities from the surface of the cable conduit before testing, preventing impurities from affecting the test results and ensuring the reliability of the test data. In the cleaning component, servo motor II drives the drive shaft to rotate. The drive shaft drives the strip slider to move laterally through the meshing of gears and racks, which in turn drives the limit scraper to move away or closer synchronously. This facilitates the feeding of the cable conduit and can also quickly clean the impurities remaining on the limit scraper, adapting to the needs of continuous testing.

[0020] The limiting scraper in the cleaning assembly can be easily replaced and cleaned. Rotating the operating block drives the operating rod and the strip block to rotate, so that the strip block aligns with the clearance notch of the protective cover. Under the action of the tension spring, the clamping plate moves and releases the brake on the limiting rectangular plate. The positioning protrusion moves out of the positioning groove. Then, the limiting rectangular plate, guide rod, and limiting scraper can be moved out in sequence. The whole process is convenient to operate, reduces maintenance workload, and lowers maintenance costs.

[0021] The device's frame is equipped with a controller and a display screen. The controller can adjust various parameters during the testing process, while the display screen shows the test results in real time, allowing staff to monitor the testing status promptly. The rotating frame is rotatably connected to the mounting frame, and the angle of the rotating frame can be limited by a fixing pin, thereby adjusting the camera angle and detection range to meet the testing needs of different specifications of cable conduits, improving the device's adaptability.

[0022] The sliding vertical plate is detachably connected to the supporting side plate via bolts, facilitating the overall disassembly and maintenance of the protective cover, mounting box, and cleaning components, further enhancing the ease of device maintenance. The entire device has a compact structure, is easy to install, and can achieve integrated detection and cleaning, adapting to the detection needs of large-scale production, reducing manpower input, and ensuring the factory quality of cable conduits. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a cable conduit for high-voltage power cable protection and its automated detection device proposed in this invention; Figure 2 This is a three-dimensional view of the frame in the cable conduit for high-voltage power cable protection and its automated testing device proposed in this invention; Figure 3 This is an exploded view of the fixed side plate and camera in a cable conduit for high-voltage power cable protection and its automated detection device proposed in this invention. Figure 4 This is a three-dimensional view of two supporting side plates in a cable conduit for high-voltage power cable protection and its automated testing device proposed in this invention. Figure 5 This is an exploded view of the mounting box and strip slider in a cable conduit for high-voltage power cable protection and its automated detection device proposed in this invention. Figure 6 This is a three-dimensional view of the L-shaped side plate and strip slider in the cable conduit for high-voltage power cable protection and its automated detection device proposed in this invention; Figure 7 This is a three-dimensional view of the fixed crossbar and connecting crossbar II in a cable conduit for high-voltage power cable protection and its automated testing device proposed in this invention. Figure 8This is an exploded view of the connecting plate and fixing crossbar in a cable conduit for high-voltage power cable protection and its automated detection device proposed in this invention. Figure 9 This is a three-dimensional sectional view of the fixed crossbar in a cable conduit for high-voltage power cable protection and its automated testing device proposed in this invention.

[0024] In the diagram: 1. Frame; 2. Support side plate; 3. Mounting plate; 4. Mounting frame; 5. Controller; 6. Fixed side plate; 7. Display screen; 8. Mounting bracket; 9. Support column; 10. Camera; 11. Rotating frame; 12. Fixing pin; 13. Connecting horizontal plate I; 14. Ultrasonic flaw detector; 15. Sliding vertical plate; 16. Protective cover; 17. Mounting box; 18. Limiting scraper; 19. Servo motor II; 20. Limiting baffle; 21. Strip groove; 22. Strip slider; 23. L-shaped side plate; 24. Rack; 25. Drive shaft; 26. Gear 27. Connecting block; 28. Guide plate; 29. ​​Fixed crossbar; 30. Connecting crossbar II; 31. Guide rod; 32. Limiting rectangular plate; 33. Connecting plate; 34. Limiting ring II; 35. Compression spring; 36. Limiting ring I; 37. Limiting circular groove; 38. Strip hole I; 39. Strip hole II; 40. Protective cover; 41. Rectangular groove; 42. Leaving notch; 43. Operating block; 44. Operating rod; 45. Strip block; 46. Tension spring; 47. Pressing plate; 48. Slot; 49. Positioning slot; 50. Positioning protrusion; 51. Triangular block. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0026] In one embodiment: Refer to Figure 1-9 This embodiment discloses a cable conduit. The cable conduit adopts a layered structure with a modified composite substrate. Preferably, the substrate of the cable conduit is a modified polymer composite material, which has stable structural strength and weather resistance, and is suitable for outdoor and buried high-voltage laying conditions. Specifically, the inner layer of the cable conduit is integrally formed with a high-voltage resistant insulating coating and an anti-corrosion lining, and the outer layer is composite and fixed with reinforcing ribs and an impact-resistant buffer layer. The multi-layer structure works together to stably improve the insulation withstand voltage, corrosion resistance and external impact bearing capacity of the conduit, allowing the cable conduit to maintain structural and performance stability in complex power laying environments and continuously provide protection for the internal high-voltage cables.

[0027] This solution also discloses an automated testing device for inspecting the aforementioned cable conduits. The main body of the device consists of a frame 1 as its supporting structure. Specifically, two sets of symmetrically arranged fixed side plates 6 are fixedly mounted on one side of the top of the frame 1. Two sets of symmetrically arranged connecting horizontal plates I 13 are fixedly connected between the two sets of fixed side plates 6. An ultrasonic flaw detector 14 is fixedly installed on one side of the connecting horizontal plate I 13. The ultrasonic flaw detector 14 is horizontally mounted above the conduit conveying path and can perform flaw detection on the passing cable conduits. In actual use, the cable conduit to be inspected continuously passes through the device's inspection area. The ultrasonic flaw detector 14 continuously collects internal structural data of the conduit, detecting structural defects such as cracks, pores, delamination, and inclusions inside the conduit, thus completing the screening of the internal quality of the conduit.

[0028] Furthermore, multiple support columns 9 are fixedly mounted on the top of the frame 1, and mounting brackets 8 are fixedly mounted on the outer side of the support columns 9. A rotating frame 11 is rotatably mounted on the outer side of the mounting bracket 8, and a camera 10 is fixedly mounted on the end of the rotating frame 11. The camera 10 adjusts its angle along with the rotating frame 11 to meet the visual inspection needs of the outer wall of cable pipes of different diameters. Specifically, a fixing pin 12 is threaded through the plate of the mounting bracket 8. The side of the end of the fixing pin 12 fits against the outer wall of the rotating frame 11, which limits and fixes the rotation angle of the rotating frame 11, thereby locking the shooting angle and detection range of the camera 10 to ensure that there are no blind spots in the detection of the outer wall of the cable pipe. When the cable pipe passes through the detection area of ​​the camera 10 during transportation, the camera 10 can collect image information of the outer wall of the pipe in real time to complete the detection of appearance defects such as damage, dents, and scratches on the outer wall of the pipe.

[0029] Furthermore, two sets of symmetrically arranged support side plates 2 are fixedly mounted on the top of the frame 1. The inner wall of the support side plates 2 is detachably connected to a sliding vertical plate 15 by bolts. The sliding vertical plate 15 can be quickly disassembled and aligned by bolts, facilitating subsequent component maintenance. Specifically, a protective cover 16 is fixedly mounted on the outer side of the sliding vertical plate 15. A mounting box 17 is fixedly connected to the outer side of the protective cover 16. The mounting box 17 integrates a cleaning component for cleaning the surface of the cable conduit. This component can pre-treat the surface of the conduit before it enters the inspection area, removing impurities adhering to the surface and preventing impurities from interfering with the accuracy of subsequent inspections.

[0030] Specifically, the cleaning component includes a strip groove 21 formed on one side panel of the mounting box 17. A limit baffle 20 is fixedly mounted on the outer side panel of the mounting box 17. Two sets of symmetrically arranged strip sliders 22 are slidably mounted inside the groove 21. The strip sliders 22 can perform lateral reciprocating sliding motion along the groove direction of the strip groove 21. An L-shaped side plate 23 is fixedly connected to the outer end of the strip slider 22. Two sets of symmetrically arranged guide plates 28 are fixedly mounted on the top panel of the mounting box 17. The bottom panel of the L-shaped side plate 23 slides against the top panel of the guide plate 28. The guide plate 28 can limit and guide the sliding trajectory of the L-shaped side plate 23 and the strip slider 22 to ensure the smoothness of the sliding process. Furthermore, triangular blocks 51 are fixedly mounted on both outer walls of the mounting box 17 via connecting rods. A connecting block 27 is fixedly connected to the inner end face of the strip slider 22. A rack 24 is fixedly mounted on the outer side of the connecting block 27. A drive shaft 25 is rotatably mounted on the inner wall of the mounting box 17. A gear 26 is fixedly mounted on the outer wall of the drive shaft 25. The teeth of the gear 26 mesh synchronously with the two sets of racks 24. A servo motor II 19 is fixedly mounted inside the protective cover 16. The output shaft of the servo motor II 19 is fixedly connected to the end of the drive shaft 25, which can provide a power source for the sliding adjustment of the cleaning component.

[0031] During equipment operation, servo motor II 19 drives drive shaft 25 to rotate continuously. Drive shaft 25 in rotation drives gear 26 to rotate synchronously. Gear 26 drives racks 24 on both sides to move laterally in a linear motion, moving away from or closer to each other, through meshing transmission. Racks 24 drive strip slider 22 to slide synchronously along strip groove 21 through connecting block 27, thereby realizing the synchronous opening and closing movement of the cleaning structure on both sides. Two sets of symmetrically arranged guide rods 31 are fixedly mounted on the outer side of strip slider 22. The same set of connecting horizontal plate II 30 is slidably sleeved on the outside of the rods of the two sets of guide rods 31. Connecting plate 33 is fixedly connected to the outer side of connecting horizontal plate II 30. Limiting scraper 18 is fixedly mounted at the end of connecting plate 33. Limiting scraper 18 directly corresponds to the conveying path of cable pipe and can contact the outer wall of pipe to complete the impurity scraping and cleaning operation. Specifically, the inclined surface of the triangular block 51 abuts against the side of the connecting plate 33 and the limiting scraper 18. During the lateral sliding of the strip slider 22, the inclined surface of the triangular block 51 can adaptively limit the position of the connecting plate 33 to ensure the fitting accuracy of the limiting scraper 18 and the outer wall of the pipe.

[0032] Furthermore, the connecting plate 33 has two mutually perpendicular and interconnected strip holes, I 38 and II 39, inside its body. These two sets of hole structures can accommodate positional deviations during component adjustment, improving the adaptability of structural movement. The device is also equipped with two sets of symmetrically arranged limiting rectangular plates 32. The side of the limiting rectangular plates 32 has limiting circular grooves 37. The groove structure of the limiting circular grooves 37 matches and adapts to the end structure of the guide rod 31. The guide rod 31 has a limiting ring II 34, a compression spring 35, and a limiting ring I 36 slidably sleeved on its outside. The limiting ring II 34 and the limiting ring I 36 form an elastic buffer structure through the compression spring 35, which can provide elastic buffering force during component movement and reduce structural wear.

[0033] Specifically, the side of the limiting rectangular plate 32 is provided with a positioning groove 49. Two sets of symmetrically arranged fixing crossbars 29 are fixedly mounted on the outer side of the strip slider 22. A rectangular groove 41 is provided inside the body of the fixing crossbar 29. A pressure plate 47 is slidably mounted inside the groove of the rectangular groove 41. A slot 48 is provided on the side of the pressure plate 47. Two sets of symmetrically arranged positioning protrusions 50 are fixedly mounted on the inner side wall of the slot 48. The positioning protrusions 50 can engage with the positioning groove 49 of the limiting rectangular plate 32 to achieve positioning and fixing of the limiting rectangular plate 32. An operating rod 44 is rotatably mounted on one side of the top of the pressure plate 47. A strip block 45 is fixedly mounted on the outside of the body of the operating rod 44. An operating block 43 is fixedly connected to the end of the operating rod 44. The operator can rotate the operating block 43 to drive the operating rod 44 and the strip block 45 to rotate synchronously. Furthermore, a tension spring 46 is fixedly connected between the side of the pressing plate 47 and the inner wall of the rectangular groove 41. The tension spring 46 can continuously provide a reset tension for the pressing plate 47. A protective cover 40 is fixedly mounted on the outer side of the fixed crossbar 29. A clearance notch 42 is provided inside the plate of the protective cover 40. The clearance notch 42 can be adapted to the rotation clearance requirements of the strip block 45. A limiting boss is fixedly provided on the side of the pressing plate 47. A limiting step is provided on the inner wall of the rectangular groove 41. The limiting boss and the limiting step cooperate to limit the reset stroke of the pressing plate 47 and prevent the tension spring 46 from being overstretched or compressed and failing.

[0034] Based on the above structural design, when the limiting scraper 18 needs to be disassembled, replaced, or cleaned and maintained, the operating block 43 can be rotated. The operating block 43 drives the operating rod 44 and the strip block 45 to rotate synchronously, so that the position of the strip block 45 corresponds to the clearance notch 42 of the protective cover 40, thereby releasing the limiting constraint of the protective cover 40 on the strip block 45. At this time, the tension spring 46, which is in a stretched state, releases its tension, pulling the pressing plate 47 to slide into the rectangular groove 41. The pressing plate 47 drives the slot 48 and the positioning protrusion 50 to move synchronously, so that the positioning protrusion 50 disengages from the interior of the positioning groove 49, thereby releasing the locking constraint on the limiting rectangular plate 32. Workers can directly move the limiting rectangular plate 32 outward to separate the limiting circular groove 37 from the end of the guide rod 31, thereby disassembling and removing the limiting ring II 34, compression spring 35, limiting ring I 36, and limiting scraper 18 as a whole, completing the cleaning and replacement of the components. When assembling and resetting, the reverse operation can be used to quickly fix the components, making the structure easy to disassemble and stable.

[0035] This application can be used in the field of high-voltage power equipment, or in other fields applicable to this application.

[0036] In another embodiment: Reference Figure 1-9 This invention discloses a cable conduit for high-voltage power cable protection and its automated testing device, applicable in the field of high-voltage power equipment. The structure of this embodiment is basically the same as the aforementioned embodiments, except that: a mounting frame 4 is fixedly mounted on one side of the top of the frame 1; a mounting plate 3 is fixedly connected to the outside of the mounting frame 4; a controller 5 is fixedly mounted on the surface of the mounting plate 3; and a display screen 7 is fixedly mounted on the outer wall of the frame 1. The controller 5 can uniformly control the operating status of all electrical components inside the device, such as the servo motor II 19, the ultrasonic flaw detector 14, and the camera 10. The display screen 7 can receive and display testing data, defect locations, and equipment operating parameters in real time, facilitating real-time monitoring of the cable conduit's testing results and equipment operating status. This achieves automated control and data visualization of the cable conduit testing process, effectively improving the overall accuracy and operational efficiency of cable conduit testing.

[0037] The moving parts of this device need to be lubricated and cleaned regularly. It is recommended to apply lubricating oil to the above parts every 30 working days and clean the surface dust and impurities. When the limit scraper 18 is worn to the point that it can no longer effectively scrape off impurities, it needs to be replaced in time. When the tension spring 46 is fatigued or deformed, it needs to be replaced in time to ensure the stable operation of the device.

[0038] The sliding vertical plate 15 is detachably connected by bolts, which facilitates the overall disassembly and maintenance of the protective cover 16, the mounting box 17 and the cleaning component. The cleaning component can scrape off impurities on the surface of the cable pipe before it enters the detection area, so as to avoid impurities interfering with the detection accuracy of the ultrasonic flaw detector 14 and the camera 10.

[0039] However, as is well known to those skilled in the art, the working principles and wiring methods of controller 5, servo motor II 19, ultrasonic flaw detector 14, and camera 10 are all conventional methods or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0040] The above description is only 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 cable conduit for the protection of high-voltage power cables, characterized in that, The cable conduit adopts a modified composite substrate layered structure, with an inner layer of high-voltage resistant insulating coating and anti-corrosion lining, and an outer layer of composite reinforcing ribs and impact-resistant buffer layer. The layered structure simultaneously improves the cable conduit's high-voltage insulation, impact resistance, and corrosion resistance.

2. An automated testing device for testing a high-voltage power cable protection cable conduit as described in claim 1, characterized in that, The device includes a frame (1), on one side of the top of the frame (1) are two symmetrically arranged fixed side plates (6), and two symmetrically arranged connecting horizontal plates I (13) are fixedly arranged between the two fixed side plates (6). An ultrasonic flaw detector (14) is fixedly installed on one side of the connecting horizontal plate I (13). Multiple support columns (9) are fixedly installed on the top of the frame (1). A mounting frame (8) is fixedly installed on one side of the support column (9). A rotating frame (11) is rotatably connected to one side of the mounting frame (8) via a rotating shaft. A camera (10) is fixedly installed at one end of the rotating frame (11). A fixing pin (12) is threaded through one side of the mounting frame (8). One side of the fixing pin (12) abuts against the outer wall of the rotating frame (11) and is used to limit the angle of the rotating frame (11).

3. The automated detection device according to claim 2, characterized in that, The top of the frame (1) is fixedly installed with two symmetrically arranged support side plates (2). A sliding vertical plate (15) is detachably connected to one side of the inner wall of the support side plate (2) by bolts. A protective cover (16) is fixedly connected to one side of the sliding vertical plate (15). A mounting box (17) is fixedly connected to one side of the protective cover (16). A cleaning component for cleaning cable pipes is provided inside the mounting box (17).

4. The automated detection device according to claim 3, characterized in that, The cleaning component includes a strip groove (21) on one side of the mounting box (17). A limit baffle (20) is fixedly installed on one side of the mounting box (17). Two symmetrically arranged strip sliders (22) slide through the inside of the strip groove (21). One end of the strip slider (22) is fixedly connected to an L-shaped side plate (23). Two symmetrically arranged guide plates (28) are fixedly installed on the top of the mounting box (17). The L-shaped side plate (23) is slidably connected to the top of the guide plate (28). The guide plate (28) limits and guides the sliding trajectory of the strip slider (22) to ensure that the strip slider (22) slides smoothly. The limit baffle (20) prevents the strip slider (22) from sliding excessively and detaching from the strip groove (21).

5. The automated detection device according to claim 4, characterized in that, Both sides of the mounting box (17) are fixedly connected to triangular blocks (51) by connecting rods. One side of the strip slider (22) is fixedly connected to a connecting block (27). One side of the connecting block (27) is fixedly installed with a rack (24). One side of the inner wall of the mounting box (17) is rotatably connected to a drive shaft (25) through a bearing. The outer wall of the drive shaft (25) is fixedly fitted with a gear (26). The gear (26) meshes with two racks (24). The inside of the protective cover (16) is fixedly installed with a servo motor II (19). The output shaft of the servo motor II (19) is fixedly connected to one end of the drive shaft (25). The servo motor II (19) drives the drive shaft (25) to drive the gear (26) to rotate. The gear (26) drives the two racks (24) to move closer or further away from each other through meshing transmission, thereby driving the strip slider (22) to slide synchronously.

6. The automated detection device according to claim 5, characterized in that, Two symmetrically arranged guide rods (31) are fixedly installed on one side of the strip slider (22). The guide rods (31) are arranged perpendicularly along the sliding direction of the strip slider (22). The outer walls of the two guide rods (31) are slidably fitted with the same connecting horizontal plate II (30). A connecting plate (33) is fixedly connected to one side of the connecting horizontal plate II (30). A limiting scraper (18) is fixedly installed at one end of the connecting plate (33). The inclined surface of the triangular block (51) is located inside the connecting plate (33) and abuts against one side of the limiting scraper (18). The connecting plate (33) has a strip hole I (38) and a strip hole II (39) inside. The strip hole I (38) and the strip hole II (39) are perpendicular to each other and connected to each other. The limiting scraper (18) is attached to the outer wall of the cable pipe to scrape off the dust and dirt remaining on the surface. The triangular block (51) limits and adjusts the limiting scraper (18).

7. The automated detection device according to claim 6, characterized in that, It also includes two symmetrically arranged limiting rectangular plates (32), one side of which is provided with a limiting circular groove (37). The limiting circular groove (37) is used in conjunction with one end of the guide rod (31). The outer wall of the guide rod (31) is slidably fitted with a limiting ring II (34) and a limiting ring I (36). The same compression spring (35) is provided between the limiting ring II (34) and the limiting ring I (36). The limiting circular groove (37) limits the guide rod (31).

8. The automated detection device according to claim 7, characterized in that, A positioning groove (49) is provided on one side of the limiting rectangular plate (32). Two symmetrically arranged fixed crossbars (29) are fixedly installed on one side of the strip slider (22). A rectangular groove (41) is provided on one side of the fixed crossbar (29). A pressure plate (47) is slidably connected inside the rectangular groove (41). A slot (48) is provided on one side of the pressure plate (47). Two symmetrically arranged positioning protrusions (50) are fixedly installed on the inner wall of one side of the slot (48). The positioning protrusions (50) engage with the positioning groove (49). The slot (48) cooperates with the limiting rectangular plate (32). The engagement of the positioning protrusions (50) with the positioning groove (49) realizes the limiting of the rectangular plate. The plate (32) is positioned and fixed, and the clamping plate (47) clamps and limits the rectangular plate (32). A protective cover (40) is fixedly installed on one side of the fixed crossbar (29). A clearance notch (42) is opened inside the protective cover (40). An operating rod (44) is fixedly installed on one side of the clamping plate (47). A strip block (45) is fixedly installed on the outer wall of the operating rod (44). One end of the operating rod (44) passes through the clearance notch (42) and is fixedly installed with an operating block (43). The strip block (45) works in conjunction with the clearance notch (42). A tension spring (46) is provided between one side of the clamping plate (47) and one side of the inner wall of the rectangular groove (41).

9. The automated detection device according to claim 2, characterized in that, A mounting frame (4) is fixedly installed on one side of the top of the frame (1), a mounting plate (3) is fixedly connected to one side of the mounting frame (4), a controller (5) is fixedly installed on the mounting plate (3), and a display screen (7) is fixedly installed on one side of the frame (1).

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