A wireless non-contact partial discharge sensing and detection device for high-voltage switchgear

Abstract

The present application provides a wireless non-contact partial discharge sensing and detection device for a high-voltage switchgear, which belongs to the field of partial discharge sensing technology; the device comprises a pair of parallel straight guide rails, a U-shaped guide rail is installed between the bottoms of the straight guide rails, the straight guide rails and the U-shaped guide rails are abutted against each other to form a walking track, the front end surface of the straight guide rail is abutted against a magnetic plate, a walking mechanism is provided on the magnetic plate, a detection mechanism is provided on the front end surface of the walking mechanism, the detection mechanism comprises a temperature sensing component, an inductance component, a cooling component, a transmission component and an installation component; the present application realizes the ability to accurately and reliably locate problem points through the cooperation of the walking mechanism and the temperature sensing component, realizes the ability to quickly disassemble and transfer the equipment through the cooperation of the installation component and the transmission component, realizes the ability to ensure real-time detection of line temperature changes through the cooperation of the inductance component and the cooling component, and ultimately solves the problems of unreliability, irreplaceability and instability of existing equipment.

Description

Technical Field

[0001] The present application relates to the field of partial discharge sensing technology, and in particular to a wireless non-contact partial discharge sensing and detection device for a high-voltage switch cabinet. Background Art

[0002] High-voltage switchgear is widely used in high- and medium-voltage power supply and distribution systems. Its primary functions are to open and close normal distribution lines and clear short-circuit faults, providing an effective means of changing the operating mode of distribution networks and reducing the impact of distribution network faults. In recent years, with the improvement of people's living standards and the expansion of urban areas, the demand for electricity in various industries has continued to increase, placing higher demands on the operating performance of high-voltage switchgear. Partial discharge in high-voltage switchgear may not produce observable discharge light in the early stages of its occurrence. However, these partial discharges will persist, causing the temperature of the switchgear's internal insulation components to rise and gradually deteriorate their performance until observable discharges such as corona, sparks, and arcs occur. These discharges may even directly break down the insulation, causing insulation fires or explosions, resulting in serious accidents.

[0003] Currently commonly used partial discharge detection equipment usually uses frequency band detection technology such as electromagnetic waves or sound waves to detect and locate the discharge position, but the interference of electrical equipment in the switch cabinet or the environment outside the cabinet often causes omissions in detection or errors in positioning, increasing the risk of accidents and the difficulty of maintenance. Currently commonly used partial discharge detection equipment usually needs to be installed in a specific location to ensure normal operation, which not only reduces the applicability and replaceability of the equipment, but also increases the cost of disassembly and assembly, thereby directly increasing the production cost, resulting in a long time for disassembly and assembly of the equipment and the inability to replace and use it in different models of switch cabinets. Currently commonly used partial discharge detection equipment is more likely to heat up due to frequent pulse currents, but heat will cause resistance to increase, resulting in reduced detection sensitivity, causing the detection equipment to become disabled and fail to provide early warning, increasing the risk of accidents; and during the movement of the detection equipment, scattered cables will affect the movement of the detection equipment; therefore, the present application improves the existing equipment in response to the above problems. Summary of the Invention

[0004] In order to solve the above technical problems, the present application proposes a wireless non-contact partial discharge sensing and detection device for a high-voltage switchgear.

[0005] The technical solution adopted in this application is: a wireless non-contact partial discharge sensing and detection device for a high-voltage switch cabinet, comprising a walking track installed in the high-voltage switch cabinet, a magnetic plate installed on the walking track, a walking mechanism provided on the magnetic plate, the walking mechanism comprising a walking component and a stabilizing component, the front end face of the walking mechanism being connected to a device shell via an installation component, a transmission component and a temperature sensing component being provided in the device shell, the front end face of the device shell being connected to the clamping shell via a clamping structure, an inductance component and a cooling component being provided in both the device shell and the clamping shell, the temperature sensing component, the inductance component, the cooling component, the transmission component and the installation component together forming a detection mechanism;

[0006] Shielding boxes are installed inside the device shell and the clamping shell respectively. Two ends of the two shielding boxes pass through the abutting surfaces of the device shell and the clamping shell respectively and abut on the same side. The inductor component is installed in the shielding box.

[0007] Furthermore, the running track includes a pair of parallel straight guide rails, a U-shaped guide rail is installed between the two straight guide rails, the straight guide rails and the U-shaped guide rails abut against each other to form the running track, and the front end surface of the straight guide rail abuts against the magnetic attraction plate;

[0008] The walking assembly includes a connecting column fixed on the upper part of the top surface of the magnetic plate, the connecting column is fixedly connected to the lower end of the connecting plate, a first motor is fixedly connected to one side of the upper end of the connecting plate, the first motor passes through the connecting plate and is fixedly connected to a rotating wheel frame, the rotating wheel frame is rotatably connected to the other side of the upper end of the connecting plate, a second motor is fixedly connected to the rotating wheel frame, the second motor passes through the rotating wheel frame and is fixedly connected to a driving wheel, and the driving wheel is rotatably connected to the rotating wheel frame.

[0009] Furthermore, the stabilizing component includes four T-slots opened around the back of the magnetic plate, and a sliding block is provided in each T-slot. The front end of the sliding block is fixedly connected to a limiting plate, and the rear end of the sliding block is rotatably connected to a stabilizing wheel. The side of the stabilizing wheel abuts against the first sliding groove opened on the walking track. A guide shaft is fixedly connected to the sliding block, and a guide plate is sleeved on the guide shaft. The front end surface of the guide plate is fixedly connected to the back of the magnetic plate, and a compression spring is sleeved on the guide shaft between the guide plate and the sliding block.

[0010] Furthermore, the installation component includes an electromagnet, which is fixed at the rear end of the device shell. A circuit switch is connected to the upper part of one side of the front end surface of the electromagnet. The top surface of the circuit switch passes through the top surface of the device shell. The circuit switch is connected to the main board through a wire. The main board is installed on the bottom surface of the device shell. A circuit is etched on the main board and circuit components are installed. A battery is installed in the middle of the device shell and the battery is connected to the main board through a wire.

[0011] Furthermore, the transmission component includes a summator, one side of the summator is connected to an antenna, the antenna is fixed to one side of the device shell, and the summator is connected to the mainboard through a wire.

[0012] Furthermore, the temperature sensing component includes an infrared thermometer, which is fixed on one side of the mounting bracket, and the other side of the mounting bracket is fixed to the bottom surface of the shielding box in the device shell, and the infrared thermometer is connected to the mainboard through a wire.

[0013] Furthermore, the clamping structure includes a hinged seat installed at the junction of the equipment shell and one side of the clamping shell. The upper and lower ends of the hinged seat are rotatably connected to a tilt frame. The rear end of the tilt frame is fixed with a pressure plate. The front end of the tilt frame is rotatably connected to a rotating seat. The rotating seat is fixed on the outer surface of the clamping shell. A torsion spring is sleeved in the middle of the hinged seat. One end of the torsion spring abuts the hinged seat, and the other end abuts the tilt frame.

[0014] Furthermore, the inductor assembly includes two sections of iron cores placed in the shielding boxes of the device shell and the clamping shell respectively. The two sections of iron cores cooperate with the two shielding boxes to abut against each other on the same side. A front coil is provided on the iron core located in the clamping shell, and a rear coil is provided on the iron core located in the device shell. The front coil and the rear coil cooperate with the two sections of iron cores to abut against each other on the same side, and the middle part of the rear coil is connected to the mainboard through a wire.

[0015] Furthermore, the cooling assembly includes a front cooling fin, the bottom surface of the front cooling fin abuts against the top surface of the front end of the shielding box, the top surface of the front cooling fin abuts against the top surface inside the clamping shell, the rear end of the front cooling fin abuts against the rear cooling fin, the bottom surface of the rear cooling fin abuts against the top surface of the rear end of the shielding box, the top surface of the rear cooling fin abuts against the top surface of the front end inside the device shell, and the rear end of the rear cooling fin is connected to the mainboard through a wire.

[0016] Furthermore, the front end of the top surface of the equipment shell is fixedly connected to the top surface of the clamping shell with multiple heat sinks, and the equipment shell is also provided with a cable management assembly, which includes a bypass rail, which is installed on one side of the equipment shell, and a second slide groove is opened on both sides of the bypass rail, and a guide clamp is provided in the second slide groove of the bypass rail, and the middle part of the upper end of the guide clamp is rotatably connected to a walking wheel, and the outer side surface of the walking wheel abuts the outer side surface of the bypass rail, and the rear of the walking wheel is rotatably connected to the third motor, and the third motor is installed on the guide clamp, and the front end surface of the guide clamp is fixedly connected to a connecting rod, and the other end of the connecting rod is fixedly connected to the cable management box. The cable management box is a hollow structure, and the bottom surface of the cable management box is fixedly connected to the guide rail, and the cable management clamp is slidably connected to the guide rail; the cable management clamp is hollow inside, and a fourth motor is installed inside the rear end of the cable management clamp, and the lower end of the fourth motor is rotatably connected to a rotating wheel, and the outer side surface of the rotating wheel abuts the cable management box, and the outer side surface of the cable management clamp cooperates with the rotating wheel to open a strip opening that allows the rotating wheel to extend out of the cable management clamp and contact the cable management box.

[0017] The beneficial effects of the present application compared to the prior art are as follows: through the cooperation of the walking mechanism and the temperature sensing component, the present application directly locates the problem point through temperature changes when a local discharge problem is detected, thereby improving detection reliability. The ability to accurately and reliably locate the problem point solves the problem of the detection equipment misjudging or missing the local discharge position due to interference; through the cooperation of the installation component and the transmission component, the equipment can be quickly and conveniently disassembled and assembled when the detection equipment needs to be transferred, thereby improving replaceability. The ability to quickly disassemble and assemble and transfer the equipment solves the problem of long equipment disassembly and assembly time and inability to replace and use in different models of switch cabinets; through the cooperation of the inductor component and the cooling component, the detection circuit is continuously cooled to reduce the resistance, so that the sensitivity of the circuit is maintained in a relatively stable state, improving detection stability, and by ensuring the ability to detect circuit temperature changes in real time, the problem of failure of the detection equipment due to circuit heating and failure to provide early warning is solved; through the cooperation of the wire management component, it is convenient to automatically organize and gather scattered cables, thereby improving practicality and enabling the detection mechanism to move and detect stably; ultimately solving the problems of unreliability, irreplaceability and instability of existing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present application will be further described below with reference to the accompanying drawings:

[0019] Figure 1 A schematic diagram of the overall three-dimensional structure of the device provided in the embodiment of the present application;

[0020] Figure 2 A schematic diagram of the three-dimensional structure of the walking mechanism provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of a partial three-dimensional structure of the walking mechanism provided in an embodiment of the present application;

[0022] Figure 4 A schematic diagram of the three-dimensional structure of the walking assembly provided in an embodiment of the present application;

[0023] Figure 5 Provided in the embodiments of this application Figure 4 Schematic diagram of the structure of part A;

[0024] Figure 6 A schematic diagram of the three-dimensional structure of the detection mechanism in a closed state provided in an embodiment of the present application;

[0025] Figure 7 A schematic diagram of the three-dimensional structure of the detection mechanism provided in an embodiment of the present application in an open state;

[0026] Figure 8 A schematic diagram of the internal three-dimensional structure of the detection mechanism provided in an embodiment of the present application;

[0027] Figure 9A schematic diagram of the three-dimensional structure of the temperature sensing component provided in an embodiment of the present application;

[0028] Figure 10 A schematic diagram of the three-dimensional structure of the inductor assembly provided in an embodiment of the present application;

[0029] Figure 11 A schematic diagram of the three-dimensional structure of the cooling assembly provided in an embodiment of the present application;

[0030] Figure 12 A schematic diagram of the three-dimensional structure of the transmission component provided in an embodiment of the present application;

[0031] Figure 13 A schematic diagram of the three-dimensional structure of the installation assembly provided in an embodiment of the present application;

[0032] Figure 14 A schematic diagram of the three-dimensional structure of a cable management assembly provided in an embodiment of the present application;

[0033] Figure 15 A schematic diagram of the three-dimensional structure of the cable management box provided in an embodiment of the present application;

[0034] Figure 16 This is a schematic diagram of the three-dimensional structure of the cable management clip provided in an embodiment of the present application.

[0035] The serial numbers in the figure are: 1. Straight guide rail; 2. U-shaped guide rail; 3. Magnetic plate; 4. Equipment shell; 5. Clamping shell; 6. Magnet sheet; 7. Connecting column; 8. Connecting plate; 9. First motor; 10. Rotating wheel frame; 11. Second motor; 12. Driving wheel; 13. Sliding block; 14. Stabilizing wheel; 15. Guide shaft; 16. Guide plate; 17. Compression spring; 18. Pressing plate; 19. Articulated seat; 20. Rotating seat; 21. Heat sink; 22. Shielding box; 23. Sum and difference 1. Device; 24. Mainboard; 25. Battery; 26. Infrared thermometer; 27. Mounting bracket; 28. Iron core; 29. ​​Front coil; 30. Rear coil; 31. Front cooling fin; 32. Rear cooling fin; 33. Antenna; 34. Electromagnet; 35. Circuit switch; 36. Orbit rail; 37. Guide clamp; 38. Travel wheel; 39. Third motor; 40. Connecting rod; 41. Cable management box; 42. Guide rail; 43. Cable management clamp; 44. Fourth motor; 45. Rotating wheel. DETAILED DESCRIPTION

[0036] like Figures 1 to 16As shown, the present application provides a wireless non-contact partial discharge sensing and detection device for a high-voltage switchgear, comprising a pair of parallel straight guide rails 1, a U-shaped guide rail 2 installed between the bottoms of the two straight guide rails 1, the straight guide rails 1 and the U-shaped guide rails 2 abutting against each other to form a running track, the front end face of the straight guide rail 1 abutting against a magnetic plate 3, the magnetic plate 3 being provided with a running mechanism, the running mechanism comprising a running component and a stabilizing component, the front end face of the running mechanism being connected to a device shell 4 via an installation component, the installation component being located at the rear end of the device shell 4, the device shell 4 being provided with a transmission component, the device shell 4 being provided with a temperature sensing component at the lower front end of the device shell 4, the front end face of the device shell 4 being connected to a clamping shell 5 via a clamping structure, so that the front end face of the device shell 4 can abut against the clamping shell 5 to form a closed circle, the device shell 4 and the clamping shell 5 being provided with abuttable inductance components and cooling components, the temperature sensing component, the inductance component, the cooling component, the transmission component and the installation component together forming a detection mechanism, and the modular design helping to improve maintenance efficiency and functional scalability. The device shell 4 is also provided with a wire management component. A plurality of heat sinks 21 are fixedly connected to the front end of the top surface of the device shell 4 and the top surface of the clamping shell 5. The heat sinks 21 are vertically arranged and connected at equal angles. Shielding boxes 22 are respectively installed inside the device shell 4 and the clamping shell 5. The two ends of the two shielding boxes 22 respectively pass through the abutting surfaces of the device shell 4 and the clamping shell 5, and the same sides of the two shielding boxes 22 are abutted. A summator 23 is installed on the top surface of the inside of the device shell 4. The top surface of the summator 23 passes through the top surface of the device shell 4. A mainboard 24 is installed on the bottom surface of the device shell 4. Circuits are etched on the mainboard 24, and circuit components are installed. A battery 25 is installed in the middle of the inside of the device shell 4. The battery 25 and the summator 23 are connected to the mainboard 24 through wires. All functional components are planned in an integrated manner through the mainboard 24, which facilitates the optimization of functional coordination and synchronous data transmission, thereby improving usage efficiency.

[0037] In this application, in order to solve the problem that the detection equipment misjudges or misses the location of partial discharge due to interference, the following technical solutions are adopted: Figure 1-9As shown, the left and right sides of the straight guide rail 1 and the U-shaped guide rail 2 are provided with first sliding grooves of the same depth, the upper end of the back of the straight guide rail 1 and the abutment between the straight guide rail 1 and the U-shaped guide rail 2 are fixed with magnet sheets 6, and the front end face of the straight guide rail 1 abuts against the magnetic plate 3; the walking component includes a connecting column 7 fixed horizontally on the upper part of the top surface of the magnetic plate 3, the front end of the connecting column 7 is vertically fixed to the lower end of the connecting plate 8, the upper end of the front end face of the connecting plate 8 is fixed with a first motor 9, the back of the first motor 9 passes through the connecting plate 8 and is fixed with a rotating wheel frame 10, the rotating wheel frame 10 is rotatably connected to the upper end of the back of the connecting plate 8, the rear end of one side of the rotating wheel frame 10 is fixed with a second motor 11, the second motor 11 passes through the rotating wheel frame 10 and is fixed with a driving wheel 12, the driving wheel 12 is rotatably connected to the rotating wheel frame 10, through the cooperation of the first motor 9, the second motor 11 and the driving wheel 12 The stabilizing assembly includes four T-slots evenly arranged around the back of the magnetic plate 3, a sliding block 13 is provided in the T-slot, the front end of the sliding block 13 is fixedly connected to a limiting plate, and the rear end of the sliding block 13 is rotatably connected to a stabilizing wheel 14, and the side of the stabilizing wheel 14 abuts against the first slide groove on the straight guide rail 1 and the U-shaped guide rail 2. The sliding block 13 is fixedly connected to a guide shaft 15, and a guide plate 16 is sleeved on the guide shaft 15. The front end surface of the guide plate 16 is fixedly connected to the back of the magnetic plate 3, and a compression spring 17 is sleeved on the guide shaft 15 between the guide plate 16 and the sliding block 13. The cooperation of the sliding block 13, the guide shaft 15 and the compression spring 17 makes it easy for the stabilizing wheel 14 to autonomously adjust the wheelbase according to the slide groove angle, thereby stabilizing the steering movement of the magnetic plate 3 and improving practicality. The temperature sensing component includes an infrared thermometer 26, which is fixed on one side of the mounting bracket 27, and the other side of the mounting bracket 27 is fixed to the bottom surface of the shielding box 22 in the equipment shell 4. The infrared thermometer 26 is connected to the main board 24 through a wire. Through the cooperation of the infrared thermometer 26 and the walking mechanism, it is convenient to accurately locate the partial discharge position according to temperature changes, thereby improving reliability.

[0038] In order to solve the problem that the equipment takes a long time to be disassembled and assembled and cannot be replaced in different types of switch cabinets, the following technical solutions are adopted: Figure 6-8 and Figure 12-13As shown, the front end surface of the device shell 4 cooperates with the clamping shell 5, and the clamping structure includes a hinge seat 19 installed at the abutment of the device shell 4 and the clamping shell 5. The upper and lower ends of the hinge seat 19 are rotatably connected to the tilt frame. The rear end of the tilt frame is fixed with a pressure plate 18, and the front end of the tilt frame is rotatably connected to the rotating seat 20. The rotating seat 20 is fixed to the outer surface of the clamping shell 5. A torsion spring is sleeved on the middle part of the hinge seat 19. One end of the torsion spring abuts the hinge seat 19, and the other end abuts the tilt frame. Through the cooperation of the torsion spring and the tilt frame, it is convenient to manually and quickly realize the threading work, which improves practicality. ; The transmission component includes a summator 23, one side of which is connected to an antenna 33, which is fixed to one side of the device shell 4, and the summator 23 is connected to the main board 24 through a wire; the installation component includes an electromagnet 34, which is fixed to the rear end of the device shell 4, and the upper part of the front end face of the electromagnet 34 is connected to a circuit switch 35, the top surface of the circuit switch 35 passes through the top surface of the device shell 4, and the circuit switch 35 is connected to the main board 24 through a wire. Through the cooperation of the transmission component and the installation component, wireless data transmission is facilitated and the device can be disassembled and installed at any time, providing replaceability.

[0039] In order to solve the problem that the detection equipment fails to give early warning due to circuit heating, the following technical solutions are adopted: Figure 10-11 As shown, the inductor assembly includes two sections of iron core 28 placed in the shielding box 22 of the device shell 4 and the clamping shell 5 respectively. The two sections of iron core 28 cooperate with the two shielding boxes 22 to abut each other on the same side. A front coil 29 is provided on the iron core 28 located in the clamping shell 5, and a rear coil 30 is provided on the iron core 28 located in the device shell 4. The front coil 29 and the rear coil 30 cooperate with the two sections of iron core 28 to abut each other on the same side. The middle part of the rear coil 30 is connected to the main board 24 through a wire. Through the cooperation of the iron core 28, the front coil 29 and the rear coil 30, it is convenient to detect the current change of the circuit conductor according to the magnetic induction effect, thereby discovering the partial discharge problem. , which improves practicality; the cooling component includes a front cooling fin 31, the bottom surface of the front cooling fin 31 abuts against the top surface of the front end of the shielding box 22, the top surface of the front cooling fin 31 abuts against the top surface inside the clamping shell 5, the rear end of the front cooling fin 31 abuts against the rear cooling fin 32, the bottom surface of the rear cooling fin 32 abuts against the top surface of the rear end of the shielding box 22, the top surface of the rear cooling fin 32 abuts against the top surface of the front end inside the device shell 4, and the rear end of the rear cooling fin 32 is connected to the mainboard 24 through a wire. Through the cooperation of the cooling component and the inductor component, it is convenient to continuously cool down the detection circuit to reduce the resistance, so that the sensitivity of the circuit is maintained in a relatively stable state, thereby improving the detection stability.

[0040] In order to solve the problem that the scattered cables will affect the movement of the detection equipment during the movement of the detection equipment, the following technical solutions are adopted: Figure 14-16As shown, the cable management assembly includes a bypass rail 36, which is installed on one side of the equipment shell 4. A second slide groove is provided on both sides of the bypass rail 36. A guide clamp 37 is provided in the second slide groove of the bypass rail 36. The middle part of the upper end of the guide clamp 37 is rotatably connected to a walking wheel 38. The outer side of the walking wheel 38 abuts the outer side of the bypass rail 36. The rear of the walking wheel 38 is rotatably connected to a third motor 39. The third motor 39 is installed on the guide clamp 37. The front end surface of the guide clamp 37 is fixedly connected to a connecting rod 40. The connecting rod 4 The other end is fixedly connected to a wire management box 41. The wire management box 41 has a hollow structure. A guide rail 42 is fixedly connected to the bottom surface of the wire management box 41. A wire management clamp 43 is slidably connected to the guide rail 42. The wire management clamp 43 is hollow inside. A fourth motor 44 is installed inside the rear end of the wire management clamp 43. A rotating wheel 45 is rotatably connected to the lower end of the fourth motor 44. The outer surface of the rotating wheel 45 abuts the wire management box 41. The outer surface of the wire management clamp 43 cooperates with the rotating wheel 45 to form a slot that allows the rotating wheel 45 to extend out of the wire management clamp 43 and contact the wire management box 41.

[0041] In this embodiment, the materials and models involved are explained as follows: the magnetic plate 3 is made of magnetic material; the heat sink 21 is made of high thermal conductivity and heat dissipation metal material; the first motor 9, the second motor 11, the third motor 39, and the fourth motor 44 are all miniature DC planetary reduction motors; the shielding box 22 is made of absorbing ferrite material; the antenna 33 is a miniature scanner antenna; the battery 25 is a small lead-acid battery; the infrared thermometer 26 is a short and small fast infrared thermometer; the front cooling fin 31 and the rear cooling fin 32 are both annular semiconductor cooling fins; the electromagnet 34 is a suction cup type rectangular strong magnetic electromagnet; the circuit switch 35 is a push button switch; the wire management box 41 and the wire management clip 43 are both made of smooth and wear-resistant materials.

[0042] Working Principle: In this embodiment, the present application also proposes a method for using a wireless non-contact partial discharge sensing and detection device for a high-voltage switch cabinet, comprising the following steps:

[0043] Step 1: Determine the approximate walking track of the walking mechanism according to the line direction in the switch cabinet, and then use the magnet sheet 6 to lay the straight guide rail 1 and the U-shaped guide rail 2 on the predetermined path in a head-to-tail abutment manner, and then abut the stabilizing wheels 14 on both sides of the back of the magnetic plate 3 against the first slide grooves on both sides of the straight guide rail 1, so that the sliding block 13 expands outward, thereby squeezing the compression spring 17, so that the magnetic plate 3 is firmly clamped on the guide rail, and at the same time the driving wheel 12 abuts against the front end face of the straight guide rail 1.

[0044] Step 2, then hold the detection mechanism by hand, press the pressure plate 18 with your fingers to make the other end of the tilting frame tilt up, thereby driving the rotating seat 20 to tilt up, and finally making the clamping shell 5 rotate a certain angle around the hinge seat 19, and then enter the circuit wire into the middle of the front end of the detection mechanism from the opened gap, and then release the pressure plate 18, and the tilting frame rotates the clamping shell 5 again through the torsion spring to close it, and then the rear end of the detection mechanism is abutted against the appropriate position of the front end surface of the magnetic plate 3, and then press the circuit switch 35, so that the battery 25 supplies power to the electromagnet 34 through the main board 24, so that the electromagnet 34 has magnetism, and the detection mechanism as a whole is adsorbed on the magnetic plate 3, and then the device automatically starts the fourth motor 44, driving the cable management clamp 43 to slide on the guide rail 42 until the front ends of the cable management clamps 43 abut against each other, thereby gathering the cables above the detection mechanism.

[0045] Step three, then the circuit status can be continuously detected. During the detection period, the battery 25 continuously supplies power to the rear cooling fin 32 through the mainboard 24. At the same time, the rear cooling fin 32 is in contact with the front cooling fin 31, so that the front cooling fin 31 is energized to cool the shielding box 22. At the same time, the heat on the top surfaces of the front cooling fin 31 and the rear cooling fin 32 is discharged through the heat sink 21, so that the inductor component in the shielding box 22 is continuously in a low temperature state, and the shielding box 22 can ensure that the inductor component is not affected by external interference.

[0046] Step 4. When partial discharge occurs, the high-frequency pulse current formed in the circuit conductor due to the partial discharge phenomenon will cause the iron core 28 to generate high-frequency magnetic induction through the electromagnetic effect, thereby causing the front coil 29 and the rear coil 30 to generate high-frequency current. Since the front coil 29 and the rear coil 30 are in surface contact with each other, the high-frequency currents generated by the front coil 29 and the rear coil 30 will be transmitted to the main board 24, and then sent to the summator 23 through the main board 24, and finally transmitted to the antenna 33 through the summator 23 to be converted into electromagnetic waves and sent to the staff.

[0047] Step 5: When partial discharge is detected and an early warning is sent, the main board 24 controls the infrared thermometer 26 to detect the temperature of the circuit wire. At the same time, the second motor 11 is started according to the strength of the pulse electrical signal to rotate the drive wheel 12, driving the detection mechanism to approach the fault location on the preset path. When turning is required, the first motor 9 is started to drive the rotating wheel frame 10 to rotate the angle, thereby changing the travel angle of the drive wheel 12 to achieve the turning effect. During this period, the four stabilizing wheels 14 autonomously adjust the wheelbase according to their respective positions under the elastic force of the compression spring 17 to complete the stable turning of the magnetic suction plate 3; during walking, the position of the cable management box 41 is automatically adjusted according to the walking direction. First, the bundling process in step 2 is repeated in reverse to retract the cable management clamp 43 to ensure that the cable management box 41 can move freely. Then, the third motor 39 is started to drive the travel wheel 38 to rotate, so that the guide clamp 37 moves on the orbiting rail 36 until it moves to the direction of the detection mechanism. Then, the bundling process in step 2 is repeated to complete the cable bundling, thereby ensuring that the cables in each direction pass through the detection mechanism in the center. Finally, the highest temperature point is determined by the infrared thermometer 26 to accurately locate the partial discharge position.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A wireless non-contact partial discharge sensing and detection device for high-voltage switchgear, characterized by: The invention comprises a walking track installed in a high-voltage switch cabinet, a magnetic plate (3) is installed on the walking track, a walking mechanism is provided on the magnetic plate (3), the walking mechanism comprises a walking component and a stabilizing component, a front end surface of the walking mechanism is connected to a device shell (4) through a mounting component, a transmission component and a temperature sensing component are provided in the device shell (4), a front end surface of the device shell (4) is connected to a clamping shell (5) through a clamping structure, an inductance component and a cooling component are provided in both the device shell (4) and the clamping shell (5), and the temperature sensing component, the inductance component, the cooling component, the transmission component and the mounting component together constitute a detection mechanism; A shielding box (22) is installed inside the device shell (4) and inside the clamping shell (5), respectively. The two ends of the two shielding boxes (22) respectively penetrate the abutting surfaces of the device shell (4) and the clamping shell (5), and the same sides of the two shielding boxes (22) are abutted. The inductor component is installed in the shielding box (22); The walking track comprises a pair of parallel straight guide rails (1), a U-shaped guide rail (2) is installed between the two straight guide rails (1), the straight guide rails (1) and the U-shaped guide rails (2) are mutually abutted to form the walking track, and the front end surface of the straight guide rail (1) is abutted against a magnetic attraction plate (3); The walking assembly includes a connecting column (7) fixed on the upper part of the top surface of the magnetic plate (3), the connecting column (7) is fixedly connected to the lower end of the connecting plate (8), a first motor (9) is fixedly connected to one side of the upper end of the connecting plate (8), the first motor (9) passes through the connecting plate (8) and is fixedly connected to a rotating wheel frame (10), the rotating wheel frame (10) is rotatably connected to the other side of the upper end of the connecting plate (8), a second motor (11) is fixedly connected to the rotating wheel frame (10), the second motor (11) passes through the rotating wheel frame (10) and is fixedly connected to a driving wheel (12), and the driving wheel (12) is rotatably connected to the rotating wheel frame (10).

2. The wireless non-contact partial discharge sensing and detection device for high-voltage switchgear according to claim 1, characterized in that: The stabilizing component includes four T-shaped slots provided around the back of the magnetic plate (3), a sliding block (13) is provided in each T-shaped slot, the front end of the sliding block (13) is fixedly connected to a limit plate, the rear end of the sliding block (13) is rotatably connected to a stabilizing wheel (14), the side of the stabilizing wheel (14) is in contact with a first slide slot provided on the walking track, a guide shaft (15) is fixedly connected to the sliding block (13), a guide plate (16) is sleeved on the guide shaft (15), the front end surface of the guide plate (16) is fixedly connected to the back of the magnetic plate (3), and a compression spring (17) is sleeved on the guide shaft (15) between the guide plate (16) and the sliding block (13).

3. The wireless non-contact partial discharge sensing and detection device for high-voltage switchgear according to claim 1, characterized in that: The mounting assembly includes an electromagnet (34), the electromagnet (34) is fixed at the rear end inside the device shell (4), a circuit switch (35) is connected to the upper part of one side of the front end surface of the electromagnet (34), the top surface of the circuit switch (35) passes through the top surface of the device shell (4), the circuit switch (35) is connected to the main board (24) through a wire, the main board (24) is mounted on the bottom surface inside the device shell (4), a circuit is etched on the main board (24), and circuit components are mounted thereon, a battery (25) is mounted in the middle part inside the device shell (4), and the battery (25) is connected to the main board (24) through a wire.

4. The wireless non-contact partial discharge sensing and detection device for high-voltage switchgear according to claim 3, characterized in that: The transmission component includes a summator (23), one side of the summator (23) is connected to an antenna (33), the antenna (33) is fixed to one side of the device shell (4), and the summator (23) is connected to the mainboard (24) through a wire.

5. The wireless non-contact partial discharge sensing and detection device for high-voltage switchgear according to claim 3, characterized in that: The temperature sensing component includes an infrared thermometer (26), which is fixed on one side of a mounting frame (27), and the other side of the mounting frame (27) is fixed to the bottom surface of a shielding box (22) in the device shell (4). The infrared thermometer (26) is connected to the main board (24) through a wire.

6. The wireless non-contact partial discharge sensing and detection device for high-voltage switchgear according to claim 1, characterized in that: The clamping structure includes an articulated seat (19) installed at the joint of the equipment shell (4) and the clamping shell (5). The upper and lower ends of the articulated seat (19) are rotatably connected to a tilting frame. The rear end of the tilting frame is fixedly connected to a pressure plate (18). The front end of the tilting frame is rotatably connected to a rotating seat (20). The rotating seat (20) is fixedly connected to the outer surface of the clamping shell (5). A torsion spring is sleeved on the middle part of the articulated seat (19). One end of the torsion spring abuts the articulated seat (19) and the other end abuts the tilting frame.

7. The wireless non-contact partial discharge sensing and detection device for high-voltage switchgear according to claim 3, characterized in that: The inductor assembly includes two sections of iron core (28) respectively placed in the shielding box (22) of the device shell (4) and the clamping shell (5); the two sections of iron core (28) cooperate with the two shielding boxes (22) to abut each other on the same side; a front coil (29) is provided on the iron core (28) located in the clamping shell (5); a rear coil (30) is provided on the iron core (28) located in the device shell (4); the front coil (29) and the rear coil (30) cooperate with the two sections of iron core (28) to abut each other on the same side; and the middle part of the rear coil (30) is connected to the mainboard (24) through a wire.

8. The wireless non-contact partial discharge sensing and detection device for high-voltage switchgear according to claim 3, characterized in that: The cooling assembly includes a front cooling fin (31), the bottom surface of the front cooling fin (31) abuts against the top surface of the front end of the shielding box (22), the top surface of the front cooling fin (31) abuts against the top surface inside the clamping shell (5), the rear end of the front cooling fin (31) abuts against the rear cooling fin (32), the bottom surface of the rear cooling fin (32) abuts against the top surface of the rear end of the shielding box (22), the top surface of the rear cooling fin (32) abuts against the top surface of the front end inside the device shell (4), and the rear end of the rear cooling fin (32) is connected to the mainboard (24) through a wire.

9. A wireless non-contact partial discharge sensing and detection device for high-voltage switchgear according to any one of claims 1 to 8, characterized in that: The front end of the top of the device shell (4) and the top surface of the clamping shell (5) are fixedly connected with a plurality of heat sinks (21). The device shell (4) is also provided with a wire management component, which includes a bypass rail (36). The bypass rail (36) is installed on one side of the device shell (4). A second slide groove is provided on both sides of the bypass rail (36). A guide clamp (37) is provided in the second slide groove of the bypass rail (36). The middle part of the upper end of the guide clamp (37) is rotatably connected to a walking wheel (38). The outer side surface of the walking wheel (38) abuts the outer side surface of the bypass rail (36). The rear of the walking wheel (38) is rotatably connected to a third motor (39). The third motor (39) is installed on the guide clamp (37). The guide clamp (3 7) The front end face is fixedly connected with a connecting rod (40), and the other end of the connecting rod (40) is fixedly connected with a wire management box (41). The wire management box (41) is a hollow structure. The inner bottom surface of the wire management box (41) is fixedly connected with a guide rail (42). The guide rail (42) is slidably connected with a wire management clamp (43); the wire management clamp (43) is hollow inside, and a fourth motor (44) is installed inside the rear end of the wire management clamp (43). The lower end of the fourth motor (44) is rotatably connected with a rotating wheel (45), and the outer side surface of the rotating wheel (45) abuts against the wire management box (41). The outer side surface of the wire management clamp (43) cooperates with the rotating wheel (45) to open a strip opening for allowing the rotating wheel (45) to extend out of the wire management clamp (43) and contact the wire management box (41).

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