A partial discharge detection device for insulation monitoring of electrical automation equipment

Abstract

This invention provides a partial discharge detection device for insulation monitoring of electrical automation equipment, relating to the field of partial discharge detection technology. It includes: a first mounting ring, with a second mounting ring disposed on one side of the first mounting ring. The first and second mounting rings are sleeved on the surface of an electrical equipment cable. The first and second mounting rings are respectively assembled and installed using a first vertical plate and a first splicing plate, and a second vertical plate and a second splicing plate, and then sleeved on the surface of the cable for easy disassembly and installation. The first and second rings are adjustable in length to accommodate cables of different sizes. The first and second vertical plates can be easily moved along the surface of the cable via first and second pulleys, which also provide a certain limiting effect. In this design, the first and second rings only serve a wrapping and guiding function. The circular shape shown in the figure is for ease of illustrating the movement path of the ultrasonic module and the mounting block.

Description

Technical Field

[0001] This invention relates to the field of partial discharge detection technology, specifically to a partial discharge detection device for insulation monitoring of electrical automation equipment. Background Technology

[0002] Online insulation monitoring and diagnosis is a technology for real-time detection and diagnosis of the insulation status of electrical equipment operating in power systems. It aims to determine equipment lifespan, detect early faults promptly, prevent insulation accidents, and improve equipment reliability. Originating in the 1970s, this technology primarily monitors parameters including leakage current, dielectric loss tangent (tgδ), partial discharge, and insulating oil gas content, and is applied in power plants, substations, and other similar settings. Its core functionality involves constructing a monitoring system through four steps: signal detection, feature extraction, status recognition, and diagnostic decision-making. It utilizes various sensors such as high-frequency current transformers (HFCTs), ultra-high frequency (UHF), and ultrasonic (AE) sensors, and leverages data fusion and machine learning algorithms for intelligent diagnosis and trend prediction.

[0003] The main monitoring parameters for online insulation monitoring include partial discharge, dielectric loss tangent (tgδ), leakage current, and insulating oil gas content. The monitoring focus differs depending on the type of high-voltage electrical equipment: for capacitive equipment (such as bushings, current transformers (CTs), capacitive voltage transformers (CVTs), and coupling capacitors), the focus is on monitoring the dielectric loss tangent (tgδ) and capacitance; for zinc oxide surge arresters, the main monitoring parameters are total current, resistive current, and capacitive current components; for transformers, key monitoring parameters include dissolved gases in the oil and partial discharge; and for power cables, the focus is on partial discharge, temperature, and grounding circulation current.

[0004] In existing technologies, partial discharge detection of cables in electrical automation equipment is mostly carried out using partial discharge detectors. High-sensitivity, high-resolution detection equipment is used to ensure accurate capture of weak partial discharge signals. Bending sections and vulnerable areas of the cable are also prone to partial discharge and should be the focus of detection. Finally, full-coverage detection is carried out to ensure full coverage of the cable during the detection process and to avoid missing any areas that may have defects.

[0005] For some electrical equipment with long cable coverage, it is time-consuming and laborious to conduct a comprehensive inspection using handheld testing instruments, and the inspection may not be comprehensive. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide a partial discharge detection device for insulation monitoring of electrical automation equipment, thereby solving the problems mentioned in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a partial discharge detection device for insulation monitoring of electrical automation equipment, comprising: a first mounting ring, a second mounting ring disposed on one side of the first mounting ring, the first and second mounting rings being sleeved on the surface of an electrical equipment cable; two sets of ultrasonic modules symmetrically disposed on the surface of the first mounting ring; a traction assembly mounted on the second mounting ring corresponding to the positions of the ultrasonic modules; an adjustment assembly disposed on the outer side of the second mounting ring; and rotating assemblies for moving the traction ultrasonic modules and traction assemblies along the cable surface disposed at the top and bottom of the first and second mounting rings; the first mounting ring includes a first vertical plate, two sets of which are arranged in a manner that allows the first vertical plate to move along the cable surface. At the top and bottom of the cable axis, a first splicing plate is fixedly installed on one side of the first vertical plate by bolts. Two first ring bands slide through the interior of the two first vertical plates and the two first splicing plates, and the first ring bands are bound to the surface of the cable. The second mounting ring includes a second vertical plate, and there are two sets of the second vertical plates. The two sets of the second vertical plates are set at the top and bottom of the cable axis. A second splicing plate is fixed to one side of the second vertical plate by bolts. A second ring band slides between the two sets of the second vertical plates and the two sets of the second splicing plates. A mounting block is slidably sleeved on the second ring band at the position corresponding to the fixing block. The traction assembly includes a first traction rope. One end of the first traction rope is fixedly connected to the fixing block, and the other end of the first traction rope slides through the mounting block.

[0008] Furthermore, the first mounting ring also includes: a first magnet plate, a first horizontal plate, and a spring telescopic rod. The first magnet plate is fixed at both ends of the first ring that pass through the first vertical plate and the first splicing plate. Adjacent first magnet plates are magnetically attracted to each other. Two first horizontal plates are fixed on the surface of the first vertical plate. A spring telescopic rod is fixed between the first horizontal plates on the same side of the two first vertical plates. A first pulley is rotatably mounted on the surface of the first vertical plate facing the cable end.

[0009] Furthermore, the second mounting ring also includes: a second magnet plate, a second pulley, a movable groove, and a slider. The second magnet plate is fixed at one end of the second ring that extends out of the second vertical plate. The second pulley is provided at the end of the second vertical plate facing the cable. Movable grooves are provided on both sides of the second pulley on the second vertical plate. A slider is slidably installed inside the movable groove. The two sides of the second pulley are rotatably installed on the slider. A return spring is fixed between the top of the slider and the movable groove.

[0010] Furthermore, the adjustment assembly includes: a shaft frame, a bidirectional screw, and a second horizontal plate. The bidirectional screw is rotatably mounted inside the shaft frame. The second horizontal plate is fixed to one end of the second vertical plate facing the shaft frame, and the second horizontal plate is threaded onto the surface of the bidirectional screw. A first braking block is fixed to both sides of the first vertical plate near the cable end.

[0011] Furthermore, a bidirectional electric push rod is fixed to the outer surface of the shaft frame, and a pressing plate is fixed to the two extended ends of the bidirectional electric push rod. The pressing plate is in pressing contact with the second magnet plates at the top and bottom of the second mounting ring. In addition, a first electric push rod is fixed inside the first vertical plate, and a push plate is fixed to the extended end of the first electric push rod. The push plate is in pressing contact with the first magnet plate.

[0012] Furthermore, the ultrasonic module also includes: a fixed block, a second braking block, and a rotating frame. Fixed blocks are fixed on both sides of the ultrasonic module. The fixed blocks are slidably sleeved on the surface of the first ring belt. A rotating frame is rotatably mounted on the outer surface of the fixed blocks via a rotating shaft and a torsion spring. A second braking block is fixed at the other end of the rotating frame, and the second braking block is in contact with the outer surface of the cable. A first ball is fixed on the surface of the fixed block facing the cable.

[0013] Furthermore, the traction assembly also includes: a second winding seat and a first motor. The second winding seat is fixed to the end of the mounting block corresponding to the end through which the first traction rope passes. The first traction rope is wound onto the winding shaft of the second winding seat. The first motor is fixed to the top of the second winding seat, and the output end of the first motor is fixedly connected to the winding shaft of the second winding seat. A second ball is fixed to the side of the mounting block facing the cable. The second ball is in sliding contact with the cable. A limit ring is fixed to one side of the ultrasonic module, and the first traction rope slides through the limit ring.

[0014] Furthermore, a first winding seat is fixed on the shaft frame, and a second traction rope is wound on the winding shaft of the first winding seat. The movable end of the second traction rope is fixedly connected to the outer wall of the storage end of the spring telescopic rod. A motor for driving the winding shaft of the first winding seat to rotate is installed on the shaft frame.

[0015] Furthermore, the rotating assembly also includes: a third winding seat and a pull rope. The third winding seat is fixed on the surface of the first vertical plate and the first splicing plate located between the two first ring belts. The pull rope is wound on the winding shaft of the third winding seat and is fixedly connected to the ultrasonic module. A second motor is fixed on the first splicing plate and the second splicing plate at the position corresponding to the third winding seat, and the output end of the second motor is fixedly connected to the winding shaft of the third winding seat.

[0016] Furthermore, a transmission belt is installed on the side of the first and second vertical plates. One end of the transmission belt pulley is fixedly connected to the third take-up seat of the first vertical plate via a shaft. The other end of the transmission belt pulley is fixed with a socket. The third take-up seat of the first splicing plate is fixed with an insert block via a shaft, and the insert block is horizontally inserted into the socket.

[0017] The beneficial effects of this invention are:

[0018] 1. The first mounting ring and the second mounting ring of the present invention are respectively spliced ​​and installed by the first vertical plate and the first splicing plate and the second vertical plate and the second splicing plate, and then fitted onto the surface of the cable for easy disassembly and installation. The first ring and the second ring can be adjusted in length to be suitable for wrapping cables of different sizes. The first pulley and the second pulley can facilitate the movement of the first vertical plate and the second vertical plate along the surface of the cable, and also play a certain limiting role. In this solution, the first ring and the second ring only play the role of wrapping and guiding. The circular shape shown in the figure is to facilitate the representation of the movement path of the ultrasonic module and the mounting block.

[0019] 2. After the first and second mounting rings are fitted onto the cable surface, the invention uses a bidirectional screw to move the second horizontal plates at both ends. The second horizontal plates can move the spliced ​​second vertical plate and the second splicing plate, thereby moving the first vertical plate toward the cable. At this time, the sliders on both sides of the second pulley slide along the moving groove, retracting the second pulley into the first vertical plate. The first braking blocks on both sides of the first vertical plate contact the cable surface to lock the second mounting ring, facilitating the winding and traction movement of the first mounting ring. This replaces manual handheld detection of partial discharge. The bidirectional electric push rod drives the two extrusion plates to contact the second magnet plate, adjusting the length of the second ring that passes through the second vertical plate and the second splicing plate, thereby adjusting the size of the inner wrapping of the second ring. This is applicable to wrapping cables of different sizes. The first electric push rod and push plate push the first magnet plate to move, similarly adjusting the wrapping range of the first mounting ring, thus keeping the mounting block and ultrasonic module close to the cable surface and allowing for adjustment based on the cable size.

[0020] 3. In this invention, the first and second mounting rings are fitted onto the outer surface of the cable. At this time, the rotating frame rotates the second brake block to contact the outer surface of the cable through a torsion spring. This contact provides a certain braking effect. Due to the rotation of the rotating frame, part of the first traction rope is reserved in length. Then, the second mounting ring is pulled to move along the cable, and the traction component unwinds until the second mounting ring moves to the other end of the cable and stops, locking the second mounting ring onto the cable. The first motor drives the second winding seat to wind the first traction rope, and at the same time, the first winding seat winds the second traction rope. At this time, because the first traction rope is tightened, the rotating frame rotates 90 degrees, and the second brake block no longer squeezes and contacts the outer surface of the cable. Thus, the first mounting ring can move along the surface of the cable with the first and second traction ropes, performing comprehensive discharge detection on the cable laying path, improving detection efficiency and convenience.

[0021] 4. Because both sides of the first and second mounting rings have ultrasonic modules and mounting blocks, the path for the pull rope to move the ultrasonic modules and mounting blocks is along one side of the cable. This enables a circular ultrasonic flaw detection of the cable's cross-section. The mounting blocks rotate to maintain the connection between the traction assembly and the ultrasonic modules. When the first and second mounting rings are fitted onto the cable, the first and second splicing plates are spliced ​​and locked with the first and second vertical plates. At this time, the third take-up shafts of the first and second splicing plates are inserted into the socket of the transmission belt through the inserts. When the second motor drives the third take-up shaft on one side to rotate, the third take-up shafts at the top and bottom of the first and second mounting rings are synchronously driven by the transmission belt, causing the ultrasonic modules and mounting blocks on both sides to move synchronously, performing a semi-circular moving flaw detection on the cable surface. The lateral insertion of the inserts into the socket facilitates the separation of the transmission connection of the third take-up shaft when disassembling the first and second splicing plates, reducing the motor layout and facilitating disassembly without interference. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the connection between the first mounting ring and the second mounting ring and the cable in a partial discharge detection device for insulation monitoring of electrical automation equipment according to an embodiment of this disclosure;

[0023] Figure 2 This is a schematic diagram of the overall structure of a partial discharge detection device for insulation monitoring of electrical automation equipment according to an embodiment of the present disclosure;

[0024] Figure 3 This is a schematic diagram of the first mounting ring structure in a partial discharge detection device for insulation monitoring of electrical automation equipment according to an embodiment of this disclosure;

[0025] Figure 4This is a schematic diagram of the ultrasonic module structure in a partial discharge detection device for insulation monitoring of electrical automation equipment according to an embodiment of this disclosure;

[0026] Figure 5 This is a schematic diagram of the rotating component structure in a partial discharge detection device for insulation monitoring of electrical automation equipment according to an embodiment of this disclosure;

[0027] Figure 6 This is a schematic diagram of the connection between two sets of first vertical plates in a partial discharge detection device for insulation monitoring of electrical automation equipment according to an embodiment of this disclosure;

[0028] Figure 7 This is a schematic diagram of the connection between the second mounting ring and the adjustment component in a partial discharge detection device for insulation monitoring of electrical automation equipment according to an embodiment of this disclosure;

[0029] Figure 8 This is a schematic diagram of the connection between the traction component and the second mounting ring in a partial discharge detection device for insulation monitoring of electrical automation equipment according to an embodiment of this disclosure;

[0030] Figure 9 This is a schematic diagram of the internal structure of the second vertical plate in a partial discharge detection device for insulation monitoring of electrical automation equipment according to an embodiment of this disclosure;

[0031] As shown in the figure: 1. First mounting ring; 11. First vertical plate; 12. First splicing plate; 13. First ring belt; 14. First magnet plate; 15. First horizontal plate; 16. Spring telescopic rod; 17. First pulley; 18. First electric push rod; 19. Push plate;

[0032] 2. Second mounting ring; 21. Second vertical plate; 22. Second splicing plate; 23. Second ring belt; 24. Second magnet plate; 25. Second pulley; 26. Moving groove; 27. Slider; 28. Return spring; 29. ​​First brake block;

[0033] 3. Adjustment assembly; 31. Shaft bracket; 32. Double-acting screw; 33. Second horizontal plate; 34. Double-acting electric push rod; 35. Extrusion plate;

[0034] 4. Ultrasonic module; 41. Fixing block; 42. Limiting ring; 43. First sphere; 44. Second braking block; 45. Rotating frame;

[0035] 5. Traction assembly; 51. First traction rope; 52. Second traction rope; 53. Mounting block; 54. Second sphere; 55. First winding seat; 56. Second winding seat; 57. First motor;

[0036] 6. Rotating assembly; 61. Third winding seat; 62. Pull rope; 63. Second motor; 64. Drive belt; 65. Socket; 66. Insert block. Detailed Implementation

[0037] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8As shown in the figure, this disclosure proposes a partial discharge detection device for insulation monitoring of electrical automation equipment, comprising: a first mounting ring 1, a second mounting ring 2 disposed on one side of the first mounting ring 1, the first mounting ring 1 and the second mounting ring 2 being sleeved on the surface of an electrical equipment cable, two sets of ultrasonic modules 4 symmetrically disposed on the surface of the first mounting ring 1, a traction component 5 mounted on the second mounting ring 2 corresponding to the positions of the ultrasonic modules 4, an adjustment component 3 disposed on the outer side of the second mounting ring 2, and traction ultrasonic modules 4 and traction components 5 disposed at the top and bottom of the first mounting ring 1 and the second mounting ring 2 along the cable surface. The rotating assembly 6 moves along the surface; the first mounting ring 1 includes a first vertical plate 11, of which two sets are provided, the two sets of first vertical plates 11 being disposed at the top and bottom of the cable axis; a first splicing plate 12 is fixedly mounted on one side of the first vertical plate 11 by bolts; the interiors of the two first vertical plates 11 and the two first splicing plates 12 slide through two first ring bands 13, the first ring bands 13 being bound to the surface of the cable; the second mounting ring 2 includes a second vertical plate 21, of which two sets are provided, the two sets of second vertical plates 21 being disposed at the top and bottom of the cable axis; the second vertical plate 21... A second splicing plate 22 is fixed to one side by bolts. A second ring band 23 slides between the two sets of second vertical plates 21 and the two sets of second splicing plates 22. An mounting block 53 is slidably sleeved on the second ring band 23 at the position corresponding to the fixing block 41. The traction assembly 5 includes a first traction rope 51. One end of the first traction rope 51 is fixedly connected to the fixing block 41, and the other end of the first traction rope 51 slides through the mounting block 53. This device is suitable for use in the smart grid industry; the manufacturing of smart reactors and other transformers, rectifiers, and inductors; and the manufacturing industry of smart power distribution systems, facilities, and other power distribution switch control equipment. It is mainly for use in the power distribution industry. The cable of the gas equipment is tested for partial discharge and electrical performance. The test method is to detect the discharge signal by ultrasonic detection. When using the device, the first mounting ring 1 and the second mounting ring 2 are put on the surface of the cable and the limit adjustment is made according to the size of the cable. The first mounting ring 1 is locked, and the second mounting ring 2 is moved manually. After the second mounting ring 2 moves to the other end of the cable, the second mounting ring 2 is locked. The first mounting ring 1 is moved along the cable surface by the traction component 5. The partial discharge of the cable is detected during the movement of the first mounting ring 1 along the cable surface, thereby improving the detection efficiency and convenience.

[0039] like Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8As shown, in some embodiments, the first mounting ring 1 further includes: a first magnet plate 14, a first horizontal plate 15, and a spring telescopic rod 16. The first ring band 13 passes through both ends of the first vertical plate 11 and the first splicing plate 12, and the first magnet plate 14 is fixed thereon. Adjacent first magnet plates 14 are magnetically attracted. Two first horizontal plates 15 are fixed to the surface of the first vertical plate 11, and a spring telescopic rod 16 is fixed between the first horizontal plates 15 on the same side of the two first vertical plates 11. A first pulley 17 is rotatably mounted on the surface of the first vertical plate 11 facing the cable end. The second mounting ring 2 further includes: a second magnet plate 24, a second pulley 25, a moving groove 26, and a slider 27. The second magnet plate 24 is fixed at one end of the second ring belt 23 that extends out of the second vertical plate 21. The second pulley 25 is provided at the end of the second vertical plate 21 facing the cable. Moving grooves 26 are provided on both sides of the second vertical plate 21 located on the second pulley 25. The slider 27 is slidably installed inside the moving groove 26. The two sides of the second pulley 25 are rotatably installed on the slider 27. A return spring 28 is fixed between the top of the slider 27 and the moving groove 26.

[0040] It is understandable that the first mounting ring 1 and the second mounting ring 2 are respectively spliced ​​and installed by the first vertical plate 11 and the first splicing plate 12, and the second vertical plate 21 and the second splicing plate 22, and then fitted onto the surface of the cable for easy disassembly and installation. The first ring belt 13 and the second ring belt 23 can be adjusted in length to be suitable for wrapping cables of different sizes. The first pulley 17 and the second pulley 25 can facilitate the movement of the first vertical plate 11 and the second vertical plate 21 along the surface of the cable, and also play a certain limiting role. In this solution, the first ring belt 13 and the second ring belt 23 only serve the function of wrapping and guiding. The circular shape shown in the figure is to facilitate the representation of the movement path of the ultrasonic module 4 and the mounting block 53.

[0041] like Figure 2 , Figure 3 , Figure 7 and Figure 9As shown, in some embodiments, the adjusting assembly 3 includes: a shaft frame 31, a bidirectional screw 32, and a second horizontal plate 33. The bidirectional screw 32 is rotatably mounted inside the shaft frame 31. The second horizontal plate 33 is fixed to one end of the second vertical plate 21 facing the shaft frame 31, and the second horizontal plate 33 is threaded onto the surface of the bidirectional screw 32. First brake blocks 29 are fixed to both sides of the first vertical plate 11 near the cable end. A bidirectional electric push rod 34 is fixed to the outer surface of the shaft frame 31. Two extended ends of the bidirectional electric push rod 34 are fixed with pressing plates 35, which press against the second magnet plates 24 at the top and bottom of the second mounting ring 2. A first electric push rod 18 is fixed inside the first vertical plate 11, and a push plate 19 is fixed to the extended end of the first electric push rod 18. The push plate 19 presses against the first magnet plate 14.

[0042] Understandably, after the first mounting ring 1 and the second mounting ring 2 are fitted onto the cable surface, the bidirectional screw 32 drives the second horizontal plates 33 at both ends to move. The second horizontal plates 33 can drive the spliced ​​second vertical plate 21 and the splicing plate 22 to move, thereby moving the first vertical plate 11 toward the cable. At this time, the sliders 27 on both sides of the second pulley 25 slide along the moving groove 26, retracting the second pulley 25 into the first vertical plate 11. The first braking blocks 29 on both sides of the first vertical plate 11 contact the cable surface, locking the second mounting ring 2 and facilitating the winding and pulling of the first mounting ring 1. The device moves to replace manual handheld detection of partial discharge. The two extrusion plates 35 are driven by the bidirectional electric push rod 34 to contact the second magnet plate 24. The length of the second ring 23 that passes through the second vertical plate 21 and the second splicing plate 22 can be adjusted, thereby adjusting the size of the inner wrapping of the second ring 23 for different sizes of cable wrapping. The first magnet plate 14 is moved by the first electric push rod 18 and the push plate 19, which also adjusts the wrapping range of the first mounting ring 1, thereby keeping the mounting block 53 and the ultrasonic module 4 close to the surface of the cable and adjusting the size of the cable.

[0043] like Figure 3 , Figure 4 , Figure 6 and Figure 8As shown, in some embodiments, the ultrasonic module 4 further includes: a fixing block 41, a second braking block 44, and a rotating frame 45. Fixing blocks 41 are fixed on both sides of the ultrasonic module 4. The fixing blocks 41 are slidably sleeved on the surface of the first ring belt 13. A rotating frame 45 is rotatably mounted on the outer surface of the fixing blocks 41 via a rotating shaft and a torsion spring. The second braking block 44 is fixed at the other end of the rotating frame 45, and the second braking block 44 is in contact with the outer surface of the cable. A first ball 43 is fixed on the surface of the fixing block 41 facing the cable. The traction assembly 5 further includes: a second winding seat 56 and a first motor 57. The second winding seat 56 is fixed to the end of the mounting block 53 corresponding to the end through which the first traction rope 51 passes. 51 is wound onto the take-up shaft of the second take-up seat 56. The top of the second take-up seat 56 is fixed with a first motor 57, and the output end of the first motor 57 is fixedly connected to the take-up shaft of the second take-up seat 56. A second ball 54 is fixed to the side of the mounting block 53 facing the cable, and the second ball 54 slides in contact with the cable. A limit ring 42 is fixed to one side of the ultrasonic module 4, and the first traction rope 51 slides through the limit ring 42. A first take-up seat 55 is fixed on the shaft frame 31, and the take-up shaft of the first take-up seat 55 winds up the second traction rope 52. The movable end of the second traction rope 52 is fixedly connected to the outer wall of the storage end of the spring telescopic rod 16. A motor that drives the take-up shaft of the first take-up seat 55 to rotate is mounted on the shaft frame 31.

[0044] It should be noted that initially, the first mounting ring 1 and the second mounting ring 2 are close together and are placed on the outer surface of the cable. At this time, the rotating frame 45 rotates the second brake block 44 to contact the outer surface of the cable through the torsion spring. This contact provides a certain braking effect. Due to the rotation of the rotating frame 45, part of the first traction rope 51 is reserved in length. Then, the second mounting ring 2 is pulled to move along the cable, and the traction component 5 unwinds until the second mounting ring 2 moves to the other end of the cable and stops, locking the second mounting ring 2 onto the cable. The first motor 57 drives the second winding seat 56 to wind the first traction rope 51, and at the same time, the first winding seat 55 winds the second traction rope 52. At this time, because the first traction rope 51 is tightened, the rotating frame 45 rotates 90 degrees, and the second brake block 44 no longer squeezes and contacts the outer surface of the cable. Thus, the first mounting ring 1 can move along the surface of the cable with the first traction rope 51 and the second traction rope 52, performing comprehensive discharge detection on the cable laying path, improving detection efficiency and convenience.

[0045] like Figure 3 , Figure 5 and Figure 8As shown, in some embodiments, the rotating assembly 6 further includes: a third take-up seat 61 and a pull rope 62. The third take-up seat 61 is fixed on the surface of the first vertical plate 11 and the first splicing plate 12 located between the two first ring belts 13. The pull rope 62 is wound on the take-up shaft of the third take-up seat 61 and is fixedly connected to the ultrasonic module 4. The first splicing plate 12 and the second splicing plate 22 are fixed with a second motor 63 at the position corresponding to the third take-up seat 61, and the output end of the second motor 63 is fixedly connected to the take-up shaft of the third take-up seat 61. A transmission belt 64 is installed on the side of the first vertical plate 11 and the second vertical plate 21. One end of the transmission belt 64 is connected to the take-up shaft of the third take-up seat 61 of the first vertical plate 11 through a shaft. The other end of the transmission belt 64 is fixed with a socket 65. The take-up shaft of the third take-up seat 61 of the first splicing plate 12 is fixed with a plug 66 through a shaft, and the plug 66 is inserted laterally into the socket 65.

[0046] It should be noted that the second motors 63 on the two first splicing plates 12 rotate in both directions, thereby pulling the ultrasonic module 4 and the mounting block 53 along the first ring belt 13 and the second ring belt 23 respectively, according to one side of the cable. Since there are ultrasonic modules 4 and mounting blocks 53 on both sides of the first mounting ring 1 and the second mounting ring 2, the path of the pull rope 62 driving the ultrasonic module 4 and the mounting block 53 is one side of the cable, thereby realizing the ring-shaped ultrasonic flaw detection of the cable cross-section. The mounting block 53 cooperates to rotate and maintain the connection between the traction component 5 and the ultrasonic module 4. When the first mounting ring 1 and the second mounting ring 2 are fitted on the cable, the first splicing plate 12 and the second splicing plate 22 are spliced ​​with the first vertical plate 11 and the second vertical plate 21. Once locked, the winding shafts of the third winding seats 61 of the first splicing plate 12 and the second splicing plate 22 are inserted into the socket 65 of the transmission belt 64 via the insert block 66. When the second motor 63 drives the winding shaft of one side of the third winding seat 61 to rotate, the third winding seats 61 at the top and bottom of the first mounting ring 1 and the second mounting ring 2 are driven synchronously through the transmission belt 64, driving the ultrasonic modules 4 and mounting blocks 53 on both sides to move synchronously, performing semi-circular moving flaw detection on the surface of the cable. The transverse insertion of the insert block 66 into the socket 65 facilitates the separation of the transmission connection of the third winding seat 61 when disassembling the first splicing plate 12 and the second splicing plate 22, reducing the motor arrangement and facilitating disassembly without interference.

[0047] Working principle:

[0048] When using the device, the first mounting ring 1 and the second mounting ring 2 are fitted onto the surface of the cable, and the limiting adjustment is made according to the size of the cable. The first mounting ring 1 and the second mounting ring 2 are respectively spliced ​​and installed by the first vertical plate 11 and the first splicing plate 12, and the second vertical plate 21 and the second splicing plate 22, and then fitted onto the surface of the cable for easy disassembly and installation. The first ring belt 13 and the second ring belt 23 can be adjusted in length to be suitable for wrapping cables of different sizes. The first pulley 17 and the second pulley 25 facilitate the movement of the first vertical plate 11 and the second vertical plate 21 along the surface of the cable, and also provide a certain limiting effect. After the first mounting ring 1 and the second mounting ring 2 are fitted onto the surface of the cable, the two-way screw 32 drives the second horizontal plates 33 at both ends to move. The second horizontal plate 33 can drive the spliced ​​second vertical plate 21 and the second splicing plate 22 to move, thereby moving the first vertical plate 11 toward the cable. At this time, the sliders 27 on both sides of the second pulley 25 slide along the moving groove 26, and the second pulley 25 is retracted into the first vertical plate 11. The first braking blocks 29 on both sides of the first vertical plate 11 contact the cable surface to lock the second mounting ring 2, which facilitates the winding and traction movement of the first mounting ring 1, thereby replacing the manual handheld detection of partial discharge. The bidirectional electric push rod 34 drives the two extrusion plates 35 to contact the second magnet plate 24, which can adjust the length of the second ring 23 that passes through the second vertical plate 21 and the second splicing plate 22, thereby adjusting the size of the inner wrapping of the second ring 23 for different sizes. The cable is wrapped with a first electric push rod 18 and push plate 19 to move the first magnet plate 14, thus adjusting the wrapping range of the first mounting ring 1, thereby keeping the mounting block 53 and ultrasonic module 4 close to the surface of the cable. The first mounting ring 1 is locked, and the second mounting ring 2 is manually pulled. After the second mounting ring 2 moves to the other end of the cable, it is locked. The traction assembly 5 drives the first mounting ring 1 to move along the cable surface. Initially, the first mounting ring 1 and the second mounting ring 2 are close together, fitting onto the outer surface of the cable. At this time, the rotating frame 45 rotates the second brake block 44 through a torsion spring to contact the outer surface of the cable. This contact provides a certain degree of protection. The braking effect is achieved, and due to the rotation of the rotating frame 45, a portion of the first traction rope 51 is pre-lengthened, subsequently pulling the second mounting ring 2 along the cable, while the traction assembly 5 unwinds until the second mounting ring 2 moves to the other end of the cable, stopping and locking the second mounting ring 2 onto the cable. The first motor 57 drives the second winding seat 56 to wind up the first traction rope 51, while the first winding seat 55 winds up the second traction rope 52. At this point, because the first traction rope 51 is tightened, the rotating frame 45 rotates ninety degrees, and the second braking block 44 no longer presses against the outer surface of the cable. Thus, the first mounting ring 1 can move along the surface of the cable with the first traction rope 51 and the second traction rope 52, performing a comprehensive discharge detection along the cable laying path.To improve detection efficiency and convenience, the first mounting ring 1 performs partial discharge detection on the cable as it moves along the cable surface, thereby improving detection efficiency and convenience. The second motors 63 on the two first splicing plates 12 rotate in both directions, pulling the ultrasonic module 4 and mounting block 53 along the first ring belt 13 and the second ring belt 23 respectively, according to one side of the cable. Because there are ultrasonic modules 4 and mounting blocks 53 on both sides of the first mounting ring 1 and the second mounting ring 2, the path of the pull rope 62 driving the ultrasonic modules 4 and mounting blocks 53 is one side of the cable, thus achieving annular ultrasonic flaw detection of the cable's cross-section. The mounting block 53 rotates to maintain the connection between the traction component 5 and the ultrasonic module 4. When the first mounting ring 1 and the second mounting ring 2 are fitted onto the cable, the first splicing plate... The first vertical plate 11 and the second vertical plate 21 are spliced ​​and locked together. At this time, the winding shaft of the third winding seat 61 of the first splicing plate 12 and the second splicing plate 22 is inserted into the socket 65 of the transmission belt 64 through the insert 66. When the second motor 63 drives the winding shaft of the third winding seat 61 on one side to rotate, the third winding seat 61 at the top and bottom of the first mounting ring 1 and the second mounting ring 2 are driven synchronously through the transmission belt 64, which drives the ultrasonic modules 4 and the mounting blocks 53 on both sides to move synchronously, performing semi-circular moving flaw detection on the surface of the cable. The lateral insertion of the insert 66 into the socket 65 facilitates the separation of the transmission connection of the third winding seat 61 when disassembling the first splicing plate 12 and the second splicing plate 22, reducing the motor arrangement and facilitating disassembly without interference.

[0049] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A partial discharge detecting device for insulation monitoring of an electrical automation equipment, characterized by, include: A first mounting ring (1) is provided on one side of the first mounting ring (1) and a second mounting ring (2) is provided on one side of the first mounting ring (1). The first mounting ring (1) and the second mounting ring (2) are sleeved on the surface of the electrical equipment cable. Two sets of ultrasonic modules (4) are symmetrically provided on the surface of the first mounting ring (1). A traction component (5) is installed on the second mounting ring (2) at the position corresponding to the ultrasonic module (4). An adjustment component (3) is provided on the outside of the second mounting ring (2). A rotating component (6) is provided at the top and bottom of the first mounting ring (1) and the second mounting ring (2) to move the traction ultrasonic module (4) and the traction component (5) along the cable surface. The first mounting ring (1) includes a first vertical plate (11), which is provided in two sets. The two sets of first vertical plates (11) are set at the top and bottom of the cable axis. A first splicing plate (12) is fixedly installed on one side of the first vertical plate (11) by bolts. The interior of the two first vertical plates (11) and the two first splicing plates (12) slide through two first ring bands (13), and the first ring bands (13) are bound to the surface of the cable. The second mounting ring (2) includes a second vertical plate (21), which is provided in two sets. The two sets of the second vertical plates (21) are set at the top and bottom of the cable axis. A second splicing plate (22) is fixed to one side of the second vertical plate (21) by bolts. A second ring belt (23) slides between the two sets of the second vertical plates (21) and the two sets of the second splicing plates (22). A mounting block (53) is slidably sleeved on the second ring belt (23) at the position corresponding to the fixing block (41). The traction assembly (5) includes a first traction rope (51), one end of which is fixedly connected to a fixing block (41), and the other end of which slides through the mounting block (53).

2. The partial discharge detection device for insulation monitoring of electrical automation equipment according to claim 1, characterized in that, The first mounting ring (1) further includes: The first magnet plate (14), the first horizontal plate (15), and the spring telescopic rod (16) are connected. The first ring belt (13) passes through the first vertical plate (11) and the first splicing plate (12) and the first magnet plate (14) is fixed at both ends. The adjacent first magnet plates (14) are magnetically attracted. Two first horizontal plates (15) are fixed on the surface of the first vertical plate (11). The spring telescopic rod (16) is fixed between the first horizontal plates (15) on the same side of the two first vertical plates (11). Among them, the first vertical plate (11) has a first pulley (17) rotatably mounted on the surface facing one end of the cable.

3. The partial discharge detection device for insulation monitoring of electrical automation equipment according to claim 2, characterized in that, The second mounting ring (2) further includes: The second magnet plate (24), the second pulley (25), the moving groove (26), and the slider (27) are provided. The second ring belt (23) is fixed to one end of the second vertical plate (21). The second pulley (25) is provided at one end of the second vertical plate (21) facing the cable. The moving groove (26) is provided on both sides of the second vertical plate (21) and the slider (27) is slidably installed inside the moving groove (26). The two sides of the second pulley (25) are rotatably installed on the slider (27). A return spring (28) is fixed between the top of the slider (27) and the moving groove (26).

4. The partial discharge detection device for insulation monitoring of electrical automation equipment according to claim 3, characterized in that, The adjustment component (3) includes: The shaft frame (31), the double-acting screw (32), and the second horizontal plate (33) are provided. The double-acting screw (32) is rotatably installed inside the shaft frame (31). The second horizontal plate (33) is fixed to one end of the second vertical plate (21) facing the shaft frame (31), and the second horizontal plate (33) is threaded onto the surface of the double-acting screw (32). Among them, the first vertical plate (11) has first braking blocks (29) fixed on both sides near one end of the cable.

5. The partial discharge detection device for insulation monitoring of electrical automation equipment according to claim 4, characterized in that, A bidirectional electric push rod (34) is fixed on the outer surface of the shaft frame (31). A pressing plate (35) is fixed on the two extended ends of the bidirectional electric push rod (34). The pressing plate (35) is in pressing contact with the second magnet plate (24) at the top and bottom of the second mounting ring (2). The first vertical plate (11) has a first electric push rod (18) fixed inside, and the extended end of the first electric push rod (18) is fixed with a push plate (19), which is pressed into contact with the first magnet plate (14).

6. The partial discharge detection device for insulation monitoring of electrical automation equipment according to claim 5, characterized in that, The ultrasonic module (4) also includes: Fixed block (41), second brake block (44), rotating frame (45) are fixed on both sides of the ultrasonic module (4). The fixed block (41) is slidably sleeved on the surface of the first ring belt (13). The rotating frame (45) is rotatably installed on the outer surface of the fixed block (41) through a rotating shaft and a torsion spring. The second brake block (44) is fixed at the other end of the rotating frame (45), and the second brake block (44) is in contact with the outer surface of the cable. The fixing block (41) has a first ball (43) fixed on its surface facing the cable.

7. The partial discharge detection device for insulation monitoring of electrical automation equipment according to claim 6, characterized in that, The traction assembly (5) also includes: The second winding seat (56) and the first motor (57) are fixed to the end of the mounting block (53) corresponding to the end through which the first traction rope (51) passes. The first traction rope (51) is wound on the winding shaft of the second winding seat (56). The first motor (57) is fixed to the top of the second winding seat (56), and the output end of the first motor (57) is fixedly connected to the winding shaft of the second winding seat (56). The mounting block (53) has a second ball (54) fixed on the side facing the cable. The second ball (54) slides in contact with the cable. A limit ring (42) is fixed on one side of the ultrasonic module (4), and the first traction rope (51) slides through the limit ring (42).

8. The partial discharge detection device for insulation monitoring of electrical automation equipment according to claim 7, characterized in that, A first take-up seat (55) is fixed on the shaft frame (31). The take-up shaft of the first take-up seat (55) is wound with a second traction rope (52). The movable end of the second traction rope (52) is fixedly connected to the outer wall of the storage end of the spring telescopic rod (16). The shaft frame (31) is equipped with a motor that drives the winding shaft of the first winding seat (55) to rotate.

9. A partial discharge detection device for insulation monitoring of electrical automation equipment according to claim 8, characterized in that, The rotating assembly (6) further includes: The third winding seat (61) and the pull rope (62) are fixed on the surface between the first vertical plate (11) and the first splicing plate (12) located between the two first ring belts (13). The pull rope (62) is wound on the winding shaft of the third winding seat (61) and the pull rope (62) is fixedly connected to the ultrasonic module (4). The first splicing plate (12) and the second splicing plate (22) are fixed with a second motor (63) at the position corresponding to the third take-up seat (61), and the output end of the second motor (63) is fixedly connected to the take-up shaft of the third take-up seat (61).

10. A partial discharge detection device for insulation monitoring of electrical automation equipment according to claim 9, characterized in that: A transmission belt (64) is installed on the side of the first vertical plate (11) and the second vertical plate (21). One end of the transmission belt (64) is connected to the winding shaft of the third winding seat (61) of the first vertical plate (11) via a shaft. The other end of the transmission belt (64) is fixed to a socket (65). The winding shaft of the third winding seat (61) of the first splicing plate (12) is fixed to a plug (66) via a shaft, and the plug (66) is inserted horizontally into the socket (65).

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