Wireless non-contact partial discharge sensing detection equipment for high-voltage switch cabinet

Abstract

The invention provides wireless non-contact partial discharge sensing detection equipment for a high-voltage switch cabinet, and belongs to the technical field of partial discharge sensing. The equipment 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 rail abut against each other to form a walking track, the front end faces of the straight guide rails abut against a magnetic suction plate, a walking mechanism is arranged on the magnetic suction plate, and a detection mechanism is arranged on the front end face of the walking mechanism. The detection mechanism comprises a temperature sensing assembly, an inductance assembly, a cooling assembly, a transmission assembly and a mounting assembly; through cooperation of the walking mechanism and the temperature sensing assembly, the capability of accurately and reliably positioning problem points is realized, through cooperation of the mounting assembly and the transmission assembly, the capability of rapidly dismounting and transferring equipment is realized, and through cooperation of the inductance assembly and the cooling assembly, the capability of ensuring real-time detection of line temperature change is realized. Finally, the problems that existing equipment is unreliable, irreplaceable and unstable are solved.

Description

Technical Field

[0001] The present application relates to the technical field of partial discharge sensing, and particularly relates to a wireless non-contact partial discharge sensing and detection device for high-voltage switchgear. Background Art

[0002] High-voltage switchgear is widely used in high- and medium-voltage power supply and distribution systems. Its main functions are to switch on and off normal power distribution lines and cut off short-circuit faults, providing an effective means to change the operation mode of the power distribution network and reduce the impact range of power distribution network faults. In recent years, with the improvement of people's living standards and the expansion of urban scale, the demand for electric energy in all walks of life has been continuously increasing, posing higher requirements for the operating performance of high-voltage switchgear. Regarding the partial discharge of high-voltage switchgear, there will be no observable discharge light at the early stage of its occurrence. However, these partial discharges will persist, causing the temperature of the internal insulation components of the switchgear to rise and their performance to gradually deteriorate until observable discharges such as corona, spark, and arc occur, and even directly breakdown the insulation, leading to insulation fire or insulation explosion, resulting in serious accidents.

[0003] Currently, commonly used partial discharge detection devices usually adopt detection technologies in frequency bands such as electromagnetic waves or sound waves to achieve the detection and positioning of the discharge location. However, the interference from electrical equipment inside the switchgear or the external environment often causes omissions in detection or errors in positioning, increasing the accident risk and maintenance difficulty. Currently, commonly used partial discharge detection devices usually need to be installed at specific positions to ensure normal operation. This not only reduces the applicability and replaceability of the devices, but also increases the disassembly and installation costs, thus directly increasing the production cost, resulting in problems such as long disassembly and installation time of the devices and inability to be replaced and used in switchgears of different models. Currently, commonly used partial discharge detection devices are more prone to heat generation due to frequent exposure to pulsed current. However, heat generation will cause the resistance to increase, resulting in a decrease in detection sensitivity and the detection device becoming disabled and unable to give an early warning, increasing the accident risk; and during the movement of the detection device, the scattered cables will affect the movement of the detection device. Therefore, the present application has improved the existing devices for 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 high-voltage switchgear.

[0005] The technical solution adopted by this application is as follows: A wireless non-contact partial discharge sensing and detecting device for high-voltage switchgear, including a walking track installed in the high-voltage switchgear. A magnetic attraction plate is installed on the walking track, and a walking mechanism is provided on the magnetic attraction plate. The walking mechanism includes a walking component and a stabilizing component. The front end face of the walking mechanism is installed and connected to a device shell through a mounting component. A transmission component and a temperature sensing component are provided inside the device shell. The front end face of the device shell is connected to a clamping shell through a clamping structure. Inductive components and cooling components are provided inside both the device shell and the clamping shell. The temperature sensing component, inductive component, cooling component, transmission component, and mounting component together form a detection mechanism; Shielding boxes are respectively installed inside the device shell and the clamping shell. Both ends of the two shielding boxes penetrate the abutting surface of the device shell and the clamping shell and abut on the same side. The inductive components are installed inside the shielding boxes.

[0006] Furthermore, the walking track includes a pair of straight guide rails arranged in parallel. A U-shaped guide rail is installed between the two straight guide rails. The straight guide rails and the U-shaped guide rail abut against each other to form the walking track. The front end face of the straight guide rail abuts against a magnetic attraction plate; The walking component includes a connecting column fixed to the upper part of the top surface of the magnetic attraction plate. The connecting column is fixedly connected to the lower end of a connecting plate. One side of the upper end of the connecting plate is fixedly connected with a first motor. The first motor penetrates the connecting plate and is fixedly connected with a runner frame. The runner frame is rotatably connected to the other side of the upper end of the connecting plate. A second motor is fixedly connected to the runner frame. The second motor penetrates the runner frame and is fixedly connected with a driving wheel. The driving wheel is rotatably connected to the runner frame.

[0007] Furthermore, the stabilizing component includes four T-shaped grooves opened around the back surface of the magnetic attraction plate. A sliding block is provided in each T-shaped groove. A limiting piece is fixedly connected to the front end of the sliding block. A stabilizing wheel is rotatably connected to the rear end of the sliding block. The side surface of the stabilizing wheel abuts against a first chute opened on the walking track. A guiding shaft is fixedly connected to the sliding block. A guiding plate is sleeved on the guiding shaft. The front end face of the guiding plate is fixedly connected to the back surface of the magnetic attraction plate. A compression spring is sleeved on the guiding shaft between the guiding plate and the sliding block.

[0008] Furthermore, the mounting component includes an electromagnet fixed to the rear end inside the device shell. One side of the upper part of the front end face of the electromagnet is connected with a circuit switch. The top surface of the circuit switch penetrates the top surface of the device shell. The circuit switch is connected to a main board through a wire. The main board is installed on the bottom surface inside the device shell. The main board is etched with a circuit and circuit components are installed. A battery is installed in the middle inside the device shell. The battery is connected to the main board through a wire.

[0009] Furthermore, the transmission component includes a sum-difference detector. One side of the sum-difference detector is connected with an antenna. The antenna is fixed to one side of the device shell. The sum-difference detector is connected to the main board through a wire.

[0010] Further, the temperature sensing component includes an infrared thermometer, which is fixed on one side of the mounting bracket. The other side of the mounting bracket is fixed on the bottom surface of the shielding box inside the equipment housing. The infrared thermometer is connected to the main board through a wire.

[0011] Further, the clamping structure includes a hinge seat installed at the abutting position on one side of the equipment housing and the clamping housing. The upper and lower ends of the hinge seat are rotatably connected with a rocker. A pressing plate is fixedly connected to the rear end of the rocker. The front end of the rocker is rotatably connected with a rotating seat, and the rotating seat is fixedly connected to the outer side surface of the clamping housing. A torsion spring is sleeved in the middle of the hinge seat. One end of the torsion spring abuts against the hinge seat, and the other end abuts against the rocker.

[0012] Further, the inductor component includes two iron cores respectively placed in the shielding boxes of the equipment housing and the clamping housing. The two iron cores are in contact with each other on the same side in cooperation with the two shielding boxes. A front coil is sleeved on the iron core located in the clamping housing, and a rear coil is sleeved on the iron core located in the equipment housing. The front coil and the rear coil are in contact with each other on the same side in cooperation with the two iron cores. The middle of the rear coil is connected to the main board through a wire.

[0013] Further, the cooling component 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 inner top surface of the clamping housing. A rear cooling fin is abutted against the rear end of the front 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 inner front top surface of the equipment housing. The rear end of the rear cooling fin is connected to the main board through a wire.

[0014] Further, a plurality of heat sinks are fixedly connected in cooperation with the front end of the top surface of the equipment housing and the top surface of the clamping housing. A wire management component is also provided on the equipment housing. The wire management component includes a winding rail, which is installed on one side of the equipment housing. Second chutes are provided on both sides of the winding rail. A guiding clip is provided in the second chute of the winding rail. A walking wheel is rotatably connected to the middle of the upper end of the guiding clip. The outer side surface of the walking wheel abuts against the outer side surface of the winding rail. A third motor is rotatably connected behind the walking wheel, and the third motor is installed on the guiding clip. A connecting rod is fixedly connected to the front end surface of the guiding clip, and the other end of the connecting rod is fixedly connected to a wire management box. The wire management box is of a hollow structure. A guiding rail is fixedly connected to the inner bottom surface of the wire management box. A wire clamping clip is slidably connected on the guiding rail; the wire clamping clip is hollow inside. A fourth motor is installed inside the rear end of the wire clamping clip. A rotating wheel is rotatably connected to the lower end of the fourth motor. The outer side surface of the rotating wheel abuts against the wire management box. A slot is provided on the outer side surface of the wire clamping clip in cooperation with the rotating wheel to enable the rotating wheel to extend out of the wire clamping clip and contact the wire management box.

[0015] The beneficial effects of the present application compared with the prior art are as follows: Through the cooperation of the walking mechanism and the temperature sensing component, when a partial discharge problem is detected, the problem point is directly located through the temperature change, improving the detection reliability. By the ability to accurately and reliably locate the problem point, the problem of misjudgment or missed judgment of the partial discharge position by the detection equipment due to interference is solved; 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, improving the replaceability. By the ability to quickly disassemble, assemble and transfer the equipment, the problem that the equipment disassembly and assembly time is long and it cannot be replaced and used in different types of switch cabinets is solved; Through the cooperation of the inductance component and the cooling component, the detection circuit is continuously cooled to reduce the resistance, so that the sensitivity of the circuit remains in a relatively stable state, improving the detection stability. By ensuring the ability to detect the temperature change of the detection circuit in real time, the problem that the detection equipment fails due to circuit heating and no early warning is given is solved; Through the cooperation of the wire management component, it is convenient to automatically organize and bundle the scattered cables, improving the practicability, enabling the detection mechanism to move and detect stably; Finally, the problems of the existing equipment being unreliable, irreplaceable and unstable are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further describes the present application with reference to the drawings: Figure 1 It is a schematic perspective view of the overall structure of the equipment provided by the embodiment of the present application; Figure 2 It is a schematic perspective view of the walking mechanism provided by the embodiment of the present application; Figure 3 It is a partial schematic perspective view of the walking mechanism provided by the embodiment of the present application; Figure 4 It is a schematic perspective view of the walking component provided by the embodiment of the present application; Figure 5 For the embodiment of the present application Figure 4 Schematic diagram of the structure of part A; Figure 6 It is a schematic perspective view of the detection mechanism in the closed state provided by the embodiment of the present application; Figure 7 It is a schematic perspective view of the detection mechanism in the open state provided by the embodiment of the present application; Figure 8 It is a schematic perspective view of the inside of the detection mechanism provided by the embodiment of the present application; Figure 9 It is a schematic perspective view of the temperature sensing component provided by the embodiment of the present application; Figure 10 It is a schematic perspective view of the inductance component provided by the embodiment of the present application; Figure 11 It is a schematic perspective view of the cooling component provided by the embodiment of the present application; Figure 12 Schematic diagram of the three-dimensional structure of the transmission component provided by the embodiment of the present application; Figure 13 Schematic diagram of the three-dimensional structure of the installation component provided by the embodiment of the present application; Figure 14 Schematic diagram of the three-dimensional structure of the wire management component provided by the embodiment of the present application; Figure 15 Schematic diagram of the three-dimensional structure of the wire management box provided by the embodiment of the present application; Figure 16 Schematic diagram of the three-dimensional structure of the wire management clip provided by the embodiment of the present application.

[0017] Reference numerals in the figure: 1, straight guide rail; 2, U-shaped guide rail; 3, magnetic attraction plate; 4, equipment shell; 5, clamping shell; 6, magnet sheet; 7, connecting column; 8, connecting plate; 9, first motor; 10, runner 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, hinge seat; 20, rotating seat; 21, heat sink; 22, shielding box; 23, sum-difference device; 24, main board; 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, bypass track; 37, guide clip; 38, walking wheel; 39, third motor; 40, connecting rod; 41, wire management box; 42, guide rail; 43, wire management clip; 44, fourth motor; 45, runner. Detailed implementation manners

[0018] As Figures 1 to 16As shown in the figure, the present application provides a wireless non-contact partial discharge sensing and detection device for high-voltage switchgear, which includes a pair of straight guide rails 1 arranged in parallel. A U-shaped guide rail 2 is installed between the bottoms of the two straight guide rails 1. The straight guide rails 1 and the U-shaped guide rail 2 are in contact with each other to form a walking track. A magnetic attraction plate 3 is in contact with the front end face of the straight guide rail 1. A walking mechanism is provided on the magnetic attraction plate 3, and the walking mechanism includes a walking component and a stabilizing component. The front end face of the walking mechanism is installed and connected to a device housing 4 through an installation component. The installation component is located at the rear end inside the device housing 4. A transmission component is provided inside the device housing 4. A temperature sensing component is provided at the lower part of the front end inside the device housing 4. The front end face of the device housing 4 is connected to a clamping housing 5 through a clamping structure, so that the front end face of the device housing 4 can be in contact with the clamping housing 5 to form a closed circle. Inductive components and cooling components that can be in contact are provided on both the device housing 4 and the clamping housing 5. The temperature sensing component, the inductive component, the cooling component, the transmission component, and the installation component together form a detection mechanism. The modular design helps to improve the maintenance efficiency and functional extensibility. A wire management component is also provided on the device housing 4. A plurality of heat sinks 21 are fixedly connected in cooperation with the top surface of the device housing 4 and the top surface of the clamping housing 5. The heat sinks 21 are vertically arranged at equal angles. Shielding boxes 22 are respectively installed inside the device housing 4 and the clamping housing 5. The two ends of the two shielding boxes 22 respectively penetrate the contact surface of the device housing 4 and the clamping housing 5, and the same sides of the two shielding boxes 22 are in contact. A sum-difference device 23 is installed on the top surface inside the device housing 4. The top surface of the sum-difference device 23 penetrates the top surface of the device housing 4. A main board 24 is installed on the bottom surface inside the device housing 4. Circuits are etched on the main board 24, and circuit components are installed. A battery 25 is installed in the middle inside the device housing 4. Both the battery 25 and the sum-difference device 23 are connected to the main board 24 through wires. The main board 24 is used to overall plan all functional components, which is convenient for optimizing functional cooperation and synchronizing data transmission, and improves the use efficiency.

[0019] In the present application, in order to solve the problem of misjudgment or missed judgment of the partial discharge position by the detection device due to interference, the following technical solution is adopted: As Figures 1 - 9As shown in the figure, the straight guide rail 1 and the left and right sides of the U-shaped guide rail 2 are both provided with first sliding grooves of the same depth. Magnet sheets 6 are fixedly connected to the upper end of the back surface of the straight guide rail 1 and the abutting part of the back surfaces of the straight guide rail 1 and the U-shaped guide rail 2. A magnetic attraction plate 3 abuts against the front end surface of the straight guide rail 1; the walking assembly includes a connecting column 7 horizontally fixed on the upper part of the top surface of the magnetic attraction plate 3. The front end of the connecting column 7 is vertically and fixedly connected to the lower end of a connecting plate 8. The upper end of the front end surface of the connecting plate 8 is fixedly connected with a first motor 9. The back surface of the first motor 9 penetrates through the connecting plate 8 and is fixedly connected with a runner frame 10. The runner frame 10 is rotatably connected to the upper end of the back surface of the connecting plate 8. A second motor 11 is fixedly connected to the rear end of one side of the runner frame 10. The second motor 11 penetrates through the runner frame 10 and is fixedly connected with a driving wheel 12. The driving wheel 12 is rotatably connected to the runner frame 10. Through the cooperation of the first motor 9, the second motor 11 and the driving wheel 12, it is convenient to provide walking power with adjustable angle, improving the practicability; the stabilizing assembly includes four T-shaped grooves evenly opened around the back surface of the magnetic attraction plate 3. A sliding block 13 is arranged in the T-shaped groove. A limiting piece is fixedly connected to the front end of the sliding block 13. A stabilizing wheel 14 is rotatably connected to the rear end of the sliding block 13. The side surface of the stabilizing wheel 14 abuts against the first sliding groove on the straight guide rail 1 and the U-shaped guide rail 2. 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 surface of the magnetic attraction plate 3. A compression spring 17 is sleeved on the guide shaft 15 between the guide plate 16 and the sliding block 13. Through the cooperation of the sliding block 13, the guide shaft 15 and the compression spring 17, it is convenient for the stabilizing wheel 14 to autonomously adjust the wheel distance according to the angle of the sliding groove, thereby stabilizing the turning movement of the magnetic attraction plate 3 and improving the practicability. The temperature sensing assembly includes an infrared temperature detector 26. The infrared temperature detector 26 is fixed to one side of a mounting bracket 27. The other side of the mounting bracket 27 is fixed to the bottom surface of a shielding box 22 inside the equipment shell 4. The infrared temperature detector 26 is connected to the main board 24 through a wire. Through the cooperation of the infrared temperature detector 26 and the walking mechanism, it is convenient to accurately locate the partial discharge position according to the temperature change, improving the reliability.

[0020] In order to solve the problems of long equipment disassembly and assembly time and inability to be replaced and used in switch cabinets of different models, the following technical solutions are adopted: As Figures 6 - 8 and Figures 12 - 13As shown, the front end face of the equipment shell 4 cooperates with the clamping shell 5, and the clamping structure includes an articulated seat 19 installed at the abutment between the equipment shell 4 and one side of the clamping shell 5. The upper and lower ends of the articulated seat 19 cooperate to rotate and connect with a tilting frame. The rear end of the tilting frame is fixedly connected to a pressure plate 18, and 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 in the middle of the articulated seat 19, and one end of the torsion spring abuts the articulated seat 19, and the other end abuts the tilting frame. Through the cooperation of the torsion spring and the tilting frame, it is convenient to manually and quickly realize the threading work, which improves the practicality. The transmission component includes a summator 23, one side of which 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 main board 24 through a wire; the installation component includes an electromagnet 34, the electromagnet 34 is fixed to the rear end of the device shell 4, the upper part of one side 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.

[0021] In order to solve the problem that the detection equipment fails due to circuit heating and fails to provide early warning, the following technical solutions are adopted: Figures 10 - 11 As shown, 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 sleeved on the iron core 28 located in the clamping shell 5, and a rear coil 30 is sleeved 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 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 wire 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.

[0022] 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: Figures 14 - 16As shown in the figure, the cable management component includes a detouring rail 36, which is installed on one side of the equipment housing 4. Second sliding grooves are provided on both sides of the detouring rail 36. A guiding clip 37 is arranged in the second sliding groove of the detouring rail 36. A walking wheel 38 is rotatably connected to the middle of the upper end of the guiding clip 37. The outer side surface of the walking wheel 38 abuts against the outer side surface of the detouring rail 36. A third motor 39 is rotatably connected behind the walking wheel 38, and the third motor 39 is installed on the guiding clip 37. A connecting rod 40 is fixedly connected to the front end surface of the guiding clip 37, and the other end of the connecting rod 40 is fixedly connected to a cable management box 41. The cable management box 41 is of a hollow structure. A guiding rail 42 is fixedly connected to the inner bottom surface of the cable management box 41. A cable clip 43 is slidably connected to the guiding rail 42; the cable clip 43 is hollow inside. A fourth motor 44 is installed inside the rear end of the cable clip 43. A runner 45 is rotatably connected to the lower end of the fourth motor 44. The outer side surface of the runner 45 abuts against the cable management box 41. A strip opening is provided on the outer side surface of the cable clip 43 to cooperate with the runner 45 to make the runner 45 extend out of the cable clip 43 and contact the cable management box 41.

[0023] In this embodiment, the materials and models involved are described as follows: The magnetic attraction plate 3 is made of a magnetic attraction material; the heat sink 21 is made of a high thermal conductivity heat dissipation metal material; the first motor 9, the second motor 11, the third motor 39, and the fourth motor 44 are all micro DC planetary reduction motors; the shielding box 22 is made of an absorbing ferrite material; the antenna 33 is a micro scanner antenna; the battery 25 is a small lead-acid battery; the infrared temperature detector 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 cable management box 41 and the cable clip 43 are both made of smooth and wear-resistant materials.

[0024] Working principle: In this embodiment, the present application also proposes a usage method of a wireless non-contact partial discharge perception detection device for a high-voltage switch cabinet, including the following steps: Step 1, according to the trend of the lines in the switch cabinet, determine the approximate walking track of the walking mechanism. Then, lay the straight guide rail 1 and the U-shaped guide rail 2 in a head-to-tail abutting manner on the predetermined path through the magnet sheet 6. Then, the stabilizing wheels 14 on both sides of the back of the magnetic attraction plate 3 are correspondingly abutted against the first sliding grooves on both sides of the straight guide rail 1, so that the sliding block 13 expands outwards, thereby squeezing the compression spring 17, making the magnetic attraction plate 3 firmly clamped on the guide rail, and at the same time, the driving wheel 12 abuts against the front end surface of the straight guide rail 1.

[0025] 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 the circuit wire enters the middle of the front end of the detection mechanism from the opened gap, and then releases the pressure plate 18, and the tilting frame rotates and closes the clamping shell 5 again through the torsion spring, and then the rear end of the detection mechanism abuts against the appropriate position of the front end surface of the magnetic suction plate 3, and then presses 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 suction plate 3, and then the device automatically starts the fourth motor 44, drives 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.

[0026] Step three, then the circuit status can be continuously detected. During the detection, 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 achieve cooling of 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.

[0027] Step four, when local discharge occurs, the high-frequency pulse current formed in the circuit conductor due to the local 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.

[0028] Step 5: While detecting partial discharge and sending a warning, the main board 24 controls the infrared thermometer 26 to detect the temperature of the circuit wire. At the same time, according to the strength of the pulsed electrical signal, the second motor 11 is started to rotate the driving wheel 12, driving the detection mechanism to approach the fault location along a preset path. When a turn is required, the first motor 9 is started to drive the rotating wheel frame 10 to rotate by an angle, so as to change the traveling angle of the driving wheel 12, thus achieving the turning effect. During this period, the four stabilizing wheels 14 independently adjust the wheelbase under the elastic force of the compression springs 17 according to their respective positions to complete the stable turning of the magnetic attraction plate 3; during walking, the position of the wire management box 41 is automatically adjusted according to the walking direction. First, the wire collection process in Step 2 is repeated in reverse to retract the wire clip 43 to ensure the free movement of the wire management box 41. Then, the third motor 39 is started to drive the walking wheel 38 to rotate, so that the guiding clip 37 moves on the bypass track 36 until it moves to the direction of the detection mechanism's walking. Then, the wire collection process in Step 2 is repeated to complete the wire collection, so as to ensure that the wires in all directions pass through the detection mechanism in the center. Finally, the position of the partial discharge can be accurately located by determining the highest temperature point according to the infrared thermometer 26.

[0029] 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 foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate 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 in that: It includes a walking track installed in a high-voltage switch cabinet. A magnetic attraction plate (3) is installed on the walking track. A walking mechanism is provided on the magnetic attraction plate (3). The walking mechanism includes a walking component and a stabilizing component. The front end face of the walking mechanism is installed and connected to an equipment shell (4) through a mounting component. A transmission component and a temperature sensing component are provided inside the equipment shell (4). The front end face of the equipment shell (4) is connected to a clamping shell (5) through a clamping structure. Inductive components and cooling components are provided inside both the equipment shell (4) and the clamping shell (5). The temperature sensing component, inductive component, cooling component, transmission component, and mounting component together form a detection mechanism; Shielding boxes (22) are respectively installed inside the equipment shell (4) and the clamping shell (5). Both ends of the two shielding boxes (22) penetrate the abutting surface of the equipment shell (4) and the clamping shell (5), and the same sides of the two shielding boxes (22) are abutted. The inductive component is installed inside the shielding box (22).

2. The wireless non-contact partial discharge sensing and detecting device for high-voltage switchgear according to claim 1, characterized in that: The walking track includes a pair of straight guide rails (1) arranged in parallel. A U-shaped guide rail (2) is installed between the two straight guide rails (1). The straight guide rail (1) and the U-shaped guide rail (2) are abutted against each other to form the walking track. The front end face of the straight guide rail (1) abuts against a magnetic attraction plate (3); The walking component includes a connecting column (7) fixed to the upper part of the top surface of the magnetic attraction plate (3). The connecting column (7) is fixedly connected to the lower end of a connecting plate (8). One side of the upper end of the connecting plate (8) is fixedly connected with a first motor (9). The first motor (9) penetrates the connecting plate (8) and is fixedly connected with a runner frame (10). The runner 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 runner frame (10). The second motor (11) penetrates the runner frame (10) and is fixedly connected with a driving wheel (12). The driving wheel (12) is rotatably connected to the runner frame (10).

3. The wireless non-contact partial discharge sensing and detecting device for high-voltage switchgear according to claim 1, characterized in that: The stabilizing component includes four T-shaped grooves opened around the back surface of the magnetic attraction plate (3). A sliding block (13) is provided in each T-shaped groove. A limiting piece is fixedly connected to the front end of the sliding block (13). A stabilizing wheel (14) is rotatably connected to the rear end of the sliding block (13). The side surface of the stabilizing wheel (14) abuts against a first chute opened on the walking track. A guiding shaft (15) is fixedly connected to the sliding block (13). A guiding plate (16) is sleeved on the guiding shaft (15). The front end face of the guiding plate (16) is fixedly connected to the back surface of the magnetic attraction plate (3). A compression spring (17) is sleeved on the guiding shaft (15) between the guiding plate (16) and the sliding block (13).

4. The wireless non-contact partial discharge sensing and detecting device for high-voltage switchgear according to claim 1, characterized in that: The mounting component includes an electromagnet (34). The electromagnet (34) is fixed to the rear end inside the equipment shell (4). One side of the upper part of the front end face of the electromagnet (34) is connected with a circuit switch (35). The top surface of the circuit switch (35) penetrates the top surface of the equipment shell (4). The circuit switch (35) is connected to a main board (24) through a wire. The main board (24) is installed on the bottom surface inside the equipment shell (4). A circuit is etched on the main board (24), and circuit components are installed. A battery (25) is installed in the middle inside the equipment shell (4). The battery (25) is connected to the main board (24) through a wire.

5. The wireless non-contact partial discharge sensing and detecting device for high-voltage switchgear according to claim 4, characterized in that: The transmission component includes a sum-difference device (23). One side of the sum-difference device (23) is connected to an antenna (33). The antenna (33) is fixed on one side of the device housing (4). The sum-difference device (23) is connected to the main board (24) through a wire.

6. The wireless non-contact partial discharge sensing and detecting device for high-voltage switchgear according to claim 4, wherein: The temperature sensing component includes an infrared temperature detector (26). The infrared temperature detector (26) is fixed on one side of the mounting bracket (27). The other side of the mounting bracket (27) is fixed on the bottom surface of the shielding box (22) inside the device housing (4). The infrared temperature detector (26) is connected to the main board (24) through a wire.

7. A wireless non-contact partial discharge sensing and detecting device for high-voltage switchgear according to claim 1, characterized in that: The clamping structure includes a hinge seat (19) installed at the abutting position on one side of the device housing (4) and the clamping housing (5). The upper and lower ends of the hinge seat (19) are rotatably connected with a rocker. A pressing plate (18) is fixedly connected to the rear end of the rocker. The front end of the rocker is rotatably connected to a rotating seat (20). The rotating seat (20) is fixedly connected to the outer side surface of the clamping housing (5). A torsion spring is sleeved in the middle of the hinge seat (19). One end of the torsion spring abuts against the hinge seat (19), and the other end abuts against the rocker.

8. A wireless non-contact partial discharge sensing and detecting device for high-voltage switchgear according to claim 4, characterized in that: The inductance component includes two sections of iron cores (28) respectively placed in the shielding boxes (22) of the device housing (4) and the clamping housing (5). The two sections of iron cores (28) cooperate with the two shielding boxes (22) to abut against each other on the same side. A front coil (29) is sleeved on the iron core (28) located in the clamping housing (5). A rear coil (30) is sleeved on the iron core (28) located in the device housing (4). The front coil (29) and the rear coil (30) cooperate with the two sections of iron cores (28) to abut against each other on the same side. The middle of the rear coil (30) is connected to the main board (24) through a wire.

9. A wireless non-contact partial discharge sensing and detecting device for a high-voltage switchgear according to claim 4, characterized in that: The cooling component includes a front cooling fin (31). The bottom surface of the front cooling fin (31) abuts against the front top surface of the shielding box (22). The top surface of the front cooling fin (31) abuts against the inner top surface of the clamping housing (5). The rear end of the front cooling fin (31) abuts against a rear cooling fin (32). The bottom surface of the rear cooling fin (32) abuts against the rear top surface of the shielding box (22). The top surface of the rear cooling fin (32) abuts against the inner front top surface of the device housing (4). The rear end of the rear cooling fin (32) is connected to the main board (24) through a wire.

10. A wireless non-contact partial discharge sensing and detecting device for high-voltage switchgear according to any one of claims 1-9, characterized in that: At the front end of the top surface of the device housing (4), a plurality of heat sinks (21) are fixedly connected in cooperation with the top surface of the clamping housing (5). A wire management assembly is further provided on the device housing (4). The wire management assembly includes a winding rail (36). The winding rail (36) is installed on one side of the device housing (4). Second chutes are opened on both sides of the winding rail (36). A guiding clip (37) is provided in the second chute of the winding rail (36). A walking wheel (38) is rotatably connected to the middle of the upper end of the guiding clip (37). The outer side surface of the walking wheel (38) abuts against the outer side surface of the winding rail (36). A third motor (39) is rotatably connected behind the walking wheel (38). The third motor (39) is installed on the guiding clip (37). A connecting rod (40) is fixedly connected to the front end surface of the guiding clip (37). The other end of the connecting rod (40) is fixedly connected to a wire management box (41). The wire management box (41) is of a hollow structure. A guiding rail (42) is fixedly connected to the inner bottom surface of the wire management box (41). A wire clamping clip (43) is slidably connected to the guiding rail (42); the wire clamping clip (43) is hollow inside. A fourth motor (44) is installed inside the rear end of the wire clamping clip (43). A runner (45) is rotatably connected to the lower end of the fourth motor (44). The outer side surface of the runner (45) abuts against the wire management box (41). A slot is opened on the outer side surface of the wire clamping clip (43) to cooperate with the runner (45) so that the runner (45) extends out of the wire clamping clip (43) to contact the wire management box (41).

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