High-voltage cable live-line partial discharge detection device

Abstract

The utility model discloses a high-voltage cable live-line partial discharge detection device comprising a box shell, two sides of the inner wall of the box shell are provided with slots, the box shell is internally provided with an electric appliance assembly, the electric appliance assembly comprises a cover plate, the center of the outer wall of the bottom of the cover plate is provided with a placement groove, and the center of the outer wall of the top of the cover plate is in threaded connection with a threaded knob. A gear located in the containing groove is welded to the bottom end of the threaded rotary knob, sliding grooves are formed in the outer walls of the two sides of the cover plate, inserting plates are slidably inserted into the sliding grooves, one sides of the inserting plates are meshed with the gear, and one ends of the inserting plates are inserted into the inserting grooves. When the detection device needs to be disassembled and assembled, the threaded knob can be rotated, so that the threaded knob rotates on the cover plate, the gear drives the two inserting plates to move, the inserting plates are separated from the inserting grooves and retract into the sliding grooves, limitation between the electric appliance assembly and the box shell is relieved, and a worker can rapidly pull out the electric appliance assembly for maintenance treatment.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage cable power detection, in particular to a live partial discharge detection device for a high-voltage cable. Background Art

[0002] High-voltage cables are an important part of the power system. With the development of high-voltage and ultra-high-voltage transmission lines, power cables have been widely used due to their unique technical advantages. During operation, the cables will experience local electric field stress concentration due to factors such as internal impurities, semiconductor layer protrusions, and accumulation of space charges under voltage, resulting in local discharge, which affects safe operation. In order to ensure the safety of the high-voltage cable transmission process, a partial discharge detection device is generally set up to perform partial discharge detection.

[0003] For example, a high-voltage cable partial discharge detection device with application number CN215728566U and authorization announcement date 20220201 includes a sensor module, a signal processing module, a main control module and a power supply module, wherein the sensor module includes an ultrasonic sensor and an ultraviolet sensor arranged in parallel; the signal processing module includes an ultrasonic signal processing unit and an ultraviolet signal processing unit arranged in parallel; the ultrasonic sensor is connected to the main control module signal through the ultrasonic signal processing unit; the ultraviolet sensor is connected to the main control module signal through the ultraviolet signal processing unit; the power supply module supplies power to the high-voltage cable partial discharge detection device.

[0004] High-voltage cables are generally laid in the air. In order to realize partial discharge detection of high-voltage cables, the detection device is generally installed on a utility pole or an aerial cable. However, since the shell of the detection device is generally assembled together by bolts, when maintenance is required, since the detection device is in mid-air, it is inconvenient to disassemble and assemble the bolts, which affects the speed of disassembly and assembly of the detection device. Therefore, it is urgent to design a high-voltage cable live partial discharge detection device to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a device for detecting partial discharge of a high-voltage cable to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A device for detecting partial discharge of a live high-voltage cable comprises a box shell, slots are provided on both sides of the inner wall of the box shell, an electrical component is provided inside the box shell, the electrical component comprises a cover plate, a placement groove is provided at the center of the outer wall at the bottom of the cover plate, a threaded knob is threadedly connected at the center of the outer wall at the top of the cover plate, and a gear located inside the placement groove is welded to the bottom end of the threaded knob, sliding grooves are provided on the outer walls on both sides of the cover plate, and a plug-in plate is slidably inserted in the sliding groove, one side of the plug-in plate is meshed with the gear, and one end of the plug-in plate is inserted into the slot.

[0008] Furthermore, support rods are installed on both sides of the outer wall of the bottom of the cover plate by bolts, and two porous plates distributed in an upper and lower structure are installed between the four support rods by bolts.

[0009] Furthermore, connecting seats are installed on both sides of the outer wall of the bottom of the cover plate by bolts, and a plurality of sockets passing through the cover plate are arranged on the top of the connecting seat.

[0010] Furthermore, a detection module is installed on the outer wall of the bottom of one of the porous plates by bolts, and the detection module is electrically connected to the connecting seat through wires, and a control module and a signal module are installed on both sides of the outer wall of the bottom of the other porous plate by bolts, and the control module is electrically connected to the detection module and the signal module through wires.

[0011] Furthermore, ventilation slots are provided on both sides of the outer wall at the top of the cover plate, and a filter plate is installed on the top of the inner wall of the ventilation slot by bolts, and fan cylinders are installed on both sides of the outer wall at the bottom of the cover plate near the ventilation slot by bolts.

[0012] Furthermore, a fan is installed inside the fan barrel by means of bolts, and a moisture absorbing block is plugged into the bottom of the inner wall of the fan barrel.

[0013] Furthermore, two ear plates are integrally formed on the outer wall of one side of the box shell, and a through hole is opened on the outer wall of one side of the ear plate.

[0014] In the above technical scheme, the utility model provides a high-voltage cable live partial discharge detection device, (1) through the set threaded knob, gear, plug plate and slot, when it is necessary to disassemble the detection device, the threaded knob can be turned to make the threaded knob rotate on the cover plate, so that the gear moves the two plug plates, so that the plug plates are disengaged from the slot and retracted into the slide groove, so that the restriction between the electrical component and the box shell is released, so that the worker can quickly pull out the electrical component for maintenance; (2) through the set fan and desiccant block, the fan inside the two fan barrels is started, so that air can quickly enter and exit the box shell, thereby accelerating the dissipation of electronic devices in the electrical component. Heat, and when dissipating heat, the desiccant block can absorb moisture from the air entering the box shell, making the inside of the box shell in a dry state, thereby improving the moisture-proof ability of the device. At the same time, a silica gel heating plate is arranged inside the desiccant block, which can heat the desiccant block once at regular intervals to discharge the moisture absorbed by the desiccant block and then quickly discharge the moisture from the box shell under the action of the fan. This process realizes the heating of the desiccant block and enables the desiccant block to have the function of repeated use; (3) through the setting of the box shell, the electrical components are arranged inside the box shell, and the height of the box shell is higher than the height of the electrical components, which can cover the electrical components and prevent rain from falling on the electrical components when it rains. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 The utility model provides an overall structural schematic diagram of a device for detecting partial discharge of a high-voltage cable.

[0017] Figure 2 The utility model provides a schematic diagram of the overall inverted structure of a device for detecting partial discharge of a live high-voltage cable.

[0018] Figure 3 A schematic diagram of a box shell structure provided for an embodiment of a high-voltage cable live partial discharge detection device of the utility model.

[0019] Figure 4 The present invention is a schematic diagram of the structure of electrical components provided by an embodiment of a device for detecting partial discharge of a high-voltage cable.

[0020] Figure 5 A schematic diagram of the cover plate and fan cylinder structure provided in an embodiment of a high-voltage cable live partial discharge detection device of the utility model.

[0021] Figure 6 For this utility model Figure 5 A magnified view of the structure of part A in the middle.

[0022] Description of reference numerals:

[0023] 1. Box shell; 2. Ear plate; 3. Through hole; 4. Electrical components; 5. Cover plate; 6. Support rod; 7. Connecting seat; 8. Socket; 9. Threaded knob; 10. Ventilation slot; 11. Filter plate; 12. Fan cylinder; 13. Perforated plate; 14. Detection module; 15. Signal module; 16. Control module; 17. Slot; 18. Slide; 19. Plug plate; 20. Fan; 21. Desiccant block; 22. Placement slot; 23. Gear. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] like Figure 1-6 As shown, a high-voltage cable live partial discharge detection device provided by an embodiment of the utility model includes a box shell 1, slots 17 are opened on both sides of the inner wall of the box shell 1, an electrical component 4 is arranged inside the box shell 1, and the electrical component 4 includes a cover plate 5, a placement groove 22 is opened at the center of the bottom outer wall of the cover plate 5, a threaded knob 9 is threadedly connected at the center of the top outer wall of the cover plate 5, and a gear 23 located inside the placement groove 22 is welded at the bottom end of the threaded knob 9, sliding grooves 18 are opened on the outer walls on both sides of the cover plate 5, and a plug-in plate 19 is slidably inserted in the sliding groove 18, one side of the plug-in plate 19 is meshed with the gear 23, and one end of the plug-in plate 19 is inserted into the slot 17.

[0026] Specifically, in this embodiment, it includes a box shell 1, the height of the box shell 1 is higher than the height of the electrical component 4, which can cover the electrical component 4 to prevent rain from falling on the electrical component 4 when it rains. Slots 17 are provided on both sides of the inner wall of the box shell 1. The electrical component 4 is provided inside the box shell 1. The electrical component 4 includes a cover plate 5, and a placement groove 22 is provided at the center of the outer wall at the bottom of the cover plate 5. A threaded knob 9 is threadedly connected to the center of the outer wall at the top of the cover plate 5. The threaded knob 9 is threadedly installed on the cover plate 5, and a gear 23 located inside the placement groove 22 is welded to the bottom end of the threaded knob 9. Sliding grooves are provided on the outer walls on both sides of the cover plate 5. Slot 18, and a plug plate 19 is slidably inserted in the slide slot 18, a rack is set on one side of the plug plate 19, so that the plug plate 19 can be meshed with the gear 23, one side of the plug plate 19 is meshed with the gear 23, one end of the plug plate 19 is inserted in the slot 17, when the electronic equipment in the device is damaged, the threaded knob 9 can be rotated to make the threaded knob 9 rotate on the cover plate 5, so that the gear 23 moves with the two plug plates 19, so that the plug plate 19 is disengaged from the slot 17 and retracted into the slide slot 18, so that the restriction between the electrical component 4 and the box shell 1 is released, so that the worker can quickly pull out the electrical component 4 for maintenance.

[0027] The utility model provides a device for detecting partial discharge of a high-voltage cable under voltage. When the electronic equipment in the device is damaged, the threaded knob 9 can be rotated to make the threaded knob 9 rotate on the cover plate 5, so that the gear 23 moves with the two plug plates 19, so that the plug plates 19 are disengaged from the slots 17 and retracted into the slide grooves 18, so that the restriction between the electrical component 4 and the box shell 1 is released, so that the worker can quickly pull out the electrical component 4 for maintenance.

[0028] In one embodiment provided by the present utility model, Figure 4As shown, support rods 6 are installed on both sides of the bottom outer wall of the cover plate 5 by bolts, and two porous plates 13 with upper and lower structure distribution are installed between the four support rods 6 by bolts. The porous plates 13 and the support rods 6 can constitute a support frame, which is convenient for electronic devices to be installed on the cover plate 5. Connecting seats 7 are installed on both sides of the bottom outer wall of the cover plate 5 by bolts. The connecting seat 7 can connect the cable with the detection module 14, and a plurality of sockets 8 passing through the cover plate 5 are arranged on the top of the connecting seat 7. The sockets 8 facilitate the connection of the cable with the connecting seat 7. A detection module 14 is installed on the bottom outer wall of one of the porous plates 13 by bolts. The detection module 14 is a high-frequency pulse current sensor and a partial discharge collector, which can realize the detection of partial discharge, and the detection module 1 4 are electrically connected to the connection seat 7 through wires, and the other porous plate 13 is equipped with a control module 16 and a signal module 15 on both sides of the bottom outer wall through bolts. The control module 16 is a special intelligent control chip for partial discharge detection equipment. The detection result will be transmitted to the control module 16. If it is determined that a partial discharge problem occurs, the control module 16 will send a warning message to the power supply company through the signal module 15, so that the electrician can repair it in time. In this process, the control module 16 will also control the safety device on the high-voltage cable to start, so that the high-voltage cable is powered off. The signal module 15 is a signal transmitter, which can connect the device to the power supply company remotely, and the control module 16 is electrically connected to the detection module 14 and the signal module 15 through wires.

[0029] In another embodiment provided by the present utility model, Figure 5 As shown, ventilation slots 10 are provided on both sides of the outer wall at the top of the cover plate 5, and a filter plate 11 is installed on the top of the inner wall of the ventilation slot 10 by bolts. The filter plate 11 can prevent dust in the air from flowing into the box shell 1 through the ventilation slot 10. Fan cylinders 12 are installed on both sides of the outer wall of the bottom of the cover plate 5 near the ventilation slot 10 by bolts. A fan 20 is installed inside the fan cylinder 12 by bolts. The model of the fan 20 is preferably that when the fan 20 is started, air can quickly enter and exit the box shell 1, accelerate the flow of air inside the box shell 1, thereby accelerating the electrical components 4. In order to dissipate the heat of the electronic devices in the machine, a desiccant block 21 is inserted at the bottom of the inner wall of the fan cylinder 12. The desiccant block 21 can absorb the moisture in the air entering the box shell 1, so that the inside of the box shell 1 is in a dry state, thereby improving the moisture-proof ability of the device. At the same time, a silica gel heating sheet is arranged inside the desiccant block 21, and the desiccant block 21 can be heated once at regular intervals to discharge the moisture absorbed by the desiccant block 21, and then the moisture is quickly discharged from the box shell 1 under the action of the fan 20. This process realizes the heating of the desiccant block 21, and enables the desiccant block 21 to have the function of repeated use.

[0030] In another embodiment provided by the present utility model, Figure 1-3As shown, two ear plates 2 are integrally formed on the outer wall of one side of the box shell 1, and a through hole 3 is opened on the outer wall of one side of the ear plate 2, and the through hole 3 is convenient for bolts to pass through the ear plate 2.

[0031] Working principle: the bolt can be passed through the through hole 3, and then the bolt can be screwed into the equipment such as the electric pole to fix the box shell 1, and then the high-voltage cable can be connected to the socket 8 through an external wire. When the device is in operation, the detection module 14 can detect the high-voltage cable connected to the connection seat 7 and the socket 8, and the detection result will be transmitted to the control module 16. If it is determined that a partial discharge problem occurs, the control module 16 will send a warning message to the power supply company through the signal module 15, so that the electrician can repair it in time, and in this process the control module 16 will also control the safety device on the high-voltage cable to start, so that the high-voltage cable is powered off; at the same time, when the device is in operation, the fan 20 inside the two fan barrels 12 is started, so that air can quickly enter and exit the box shell 1, thereby accelerating the heat dissipation of the electronic devices in the electrical component 4, and when dissipating heat The hygroscopic block 21 can absorb moisture from the air entering the box shell 1, so that the inside of the box shell 1 is in a dry state, thereby improving the moisture-proof ability of the device. At the same time, a silica gel heating plate is arranged inside the hygroscopic block 21, and the hygroscopic block 21 can be heated once at regular intervals to discharge the moisture absorbed by the hygroscopic block 21, and then quickly discharged from the box shell 1 under the action of the fan 20. This process realizes the heating of the hygroscopic block 21, and enables the hygroscopic block 21 to have the function of repeated use. Later, when the electronic equipment in the device is damaged, the threaded knob 9 can be rotated to rotate the threaded knob 9 on the cover plate 5, so that the gear 23 moves with the two plug plates 19, so that the plug plates 19 are disengaged from the slots 17 and retracted into the slide grooves 18, so that the restriction between the electrical component 4 and the box shell 1 is released, so that the worker can quickly pull out the electrical component 4 for maintenance.

[0032] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for detecting partial discharge of a high-voltage cable, comprising a housing (1), characterized in that: Slots (17) are provided on both sides of the inner wall of the box shell (1), an electrical component (4) is provided inside the box shell (1), and the electrical component (4) comprises a cover plate (5), a placement groove (22) is provided at the center of the outer wall at the bottom of the cover plate (5), a threaded knob (9) is threadedly connected at the center of the outer wall at the top of the cover plate (5), and a gear (23) located inside the placement groove (22) is welded to the bottom end of the threaded knob (9), and a sliding groove (18) is provided on the outer walls on both sides of the cover plate (5), and a plug plate (19) is slidably inserted inside the sliding groove (18), one side of the plug plate (19) is meshed with the gear (23), and one end of the plug plate (19) is inserted into the slot (17).

2. A high-voltage cable live partial discharge detection device according to claim 1, characterized in that: Support rods (6) are installed on both sides of the outer wall of the bottom of the cover plate (5) by means of bolts, and two porous plates (13) distributed in an upper and lower structure are installed between the four support rods (6) by means of bolts.

3. A high-voltage cable live partial discharge detection device according to claim 2, characterized in that: Connecting seats (7) are installed on both sides of the outer wall of the bottom of the cover plate (5) by means of bolts, and a plurality of sockets (8) passing through the cover plate (5) are arranged on the top of the connecting seat (7).

4. A high-voltage cable live partial discharge detection device according to claim 3, characterized in that: A detection module (14) is installed on the bottom outer wall of one of the porous plates (13) by means of bolts, and the detection module (14) is electrically connected to the connection seat (7) through wires. A control module (16) and a signal module (15) are installed on both sides of the bottom outer wall of the other porous plate (13) by means of bolts, and the control module (16) is electrically connected to the detection module (14) and the signal module (15) through wires.

5. A high-voltage cable live partial discharge detection device according to claim 1, characterized in that: Ventilation slots (10) are provided on both sides of the top outer wall of the cover plate (5), and a filter plate (11) is installed on the top of the inner wall of the ventilation slot (10) by means of bolts, and a fan cylinder (12) is installed on both sides of the bottom outer wall of the cover plate (5) near the ventilation slot (10) by means of bolts.

6. A high-voltage cable live partial discharge detection device according to claim 5, characterized in that: A fan (20) is installed inside the fan cylinder (12) by means of bolts, and a moisture absorbing block (21) is inserted into the bottom of the inner wall of the fan cylinder (12).

7. A high-voltage cable live partial discharge detection device according to claim 1, characterized in that: Two ear plates (2) are integrally formed on the outer wall of one side of the box shell (1), and a through hole (3) is opened on the outer wall of one side of the ear plate (2).

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