A leakage current monitor for a surge arrester

Abstract

The utility model relates to lightning arrester technical field, and disclose a kind of lightning arrester leakage current monitoring meter, including bottom plate, the upper surface of bottom plate is equipped with support column, the outer surface of support column is equipped with two electric slide rails, the outer surface of each electric slide rail is slidably connected with slider;The utility model realizes up and down movement by electric slide rail drive annular slide rail, simultaneously, annular slide rail drive connecting box carries out annular motion, transmission motor is responsible for rotating threaded rod, to make the distance of brush roller and spray head on movable block can be flexibly adjusted with the surface of lightning arrester, then rotary motor drives brush roller high-speed rotation, carries out comprehensive mechanical cleaning to the surface of lightning arrester, spray head can spray clean water and flush, cooperate with brush roller, greatly improve the cleaning effect, this design effectively avoids the leakage current monitoring interference caused by surface dirt, guarantees the accuracy of monitoring data, provides reliable basis for judging lightning arrester insulation state.

Description

Technical Field

[0001] This utility model relates to the field of surge arrester technology, specifically to a surge arrester leakage current monitoring meter. Background Technology

[0002] A surge arrester is an electrical device that protects electrical equipment from high transient overvoltage hazards. Its core function is to limit the follow current time and amplitude. In distribution transformer areas, various surge arresters are usually installed to effectively resist lightning strikes and build a reliable lightning protection barrier to ensure the safe and stable operation of electrical equipment in the area.

[0003] When traditional surge arrester leakage current monitoring meters measure voltage, if dust and dirt adhere to the surface of the surge arrester, it can easily interfere with the measurement accuracy of the monitoring meter. This interference may not only lead to misjudgment or omission of equipment failure, but also make it difficult for maintenance personnel to accurately grasp the true status of the surge arrester. Utility Model Content

[0004] The purpose of this invention is to provide a surge arrester leakage current monitoring meter to solve the problem that dust and dirt adhering to the surface of the surge arrester interfere with the measurement accuracy of the monitoring meter.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a surge arrester leakage current monitoring meter, comprising a base plate, a support column mounted on the upper surface of the base plate, two electric slide rails mounted on the outer surface of the support column, a slider slidably connected to the outer surface of each electric slide rail, an annular plate mounted on the outer surface of the two sliders, an annular slide rail mounted on the upper surface of the annular plate, two sliding plates slidably connected to the outer surface of the annular slide rail, a connecting box mounted on the upper surface of each sliding plate, a drive motor mounted on the outer surface of each connecting box, a threaded rod mounted on the output end of each drive motor after passing through the connecting box, a movable plate threadedly connected to the outer surface of each threaded rod, a rotary motor mounted on the upper surface of one of the movable plates, a rotating rod mounted on the output end of the rotary motor, and a brush roller mounted on the outer surface of the rotating rod.

[0006] Preferably, an electric push rod is mounted on the upper surface of another of the movable plates, and a nozzle is mounted on the output end of the electric push rod.

[0007] Preferably, the outer surface of the nozzle is connected to a transmission pipe, and the end of the transmission pipe away from the nozzle is connected to a water storage tank.

[0008] Preferably, the bottom surface of the water storage tank is equipped with multiple rollers, and the outer surface of the water storage tank is equipped with an observation window.

[0009] Preferably, a controller is installed on the outer surface of the support column, and an alarm is installed on the outer surface of the support column.

[0010] Preferably, a monitoring box is installed at the upper end of the support column, and a current meter is installed on the inner bottom wall of the monitoring box.

[0011] Preferably, a guide plate is installed on the upper surface of the monitoring box, and a drain pipe is connected to the bottom surface of the guide plate.

[0012] Preferably, the upper surface of the guide plate is equipped with the surge arrester body, and the bottom surface of the surge arrester body is electrically connected to a connecting wire. The end of the connecting wire away from the surge arrester body passes through the guide plate and the monitoring box in sequence and is electrically connected to the outer surface of the current detection meter.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention utilizes an electric slide rail to drive a ring slide rail for vertical movement. Simultaneously, the ring slide rail drives a connecting box in a circular motion, while a transmission motor rotates a threaded rod. This allows the brush roller and nozzle on the movable block to flexibly adjust their distance from the surge arrester surface. Through the coordinated operation of these components, the cleaning mechanism can achieve vertical movement, circumferential rotation, and flexible adjustment of the distance and angle between the brush roller and nozzle and the surge arrester surface. The rotary motor drives the brush roller to rotate at high speed, performing a comprehensive mechanical cleaning of the surge arrester surface, while the nozzle sprays clean water for rinsing. Combined with the brush roller, this significantly improves the cleaning effect. This design effectively avoids interference from leakage current monitoring caused by surface dirt, ensuring the accuracy of monitoring data and providing a reliable basis for judging the insulation status of the surge arrester. Attached Figure Description

[0015] Figure 1 A front view of a surge arrester leakage current monitoring meter provided by this utility model;

[0016] Figure 2 Rear view of a surge arrester leakage current monitoring meter provided by this utility model;

[0017] Figure 3 A left view of a surge arrester leakage current monitoring meter provided for this utility model;

[0018] Figure 4 A cross-sectional view of a surge arrester leakage current monitoring meter provided by this utility model;

[0019] Figure 5 This is an enlarged schematic diagram of the structure at point A in a surge arrester leakage current monitoring meter provided by this utility model.

[0020] In the diagram: 1. Base plate; 2. Support column; 3. Controller; 4. Alarm; 5. Electric slide rail; 6. Slider; 7. Circular plate; 8. Circular slide rail; 9. Slide plate; 10. Connecting box; 11. Drive motor; 12. Threaded rod; 13. Movable plate; 14. Rotary motor; 15. Rotating rod; 16. Brush roller; 17. Electric push rod; 18. Nozzle; 19. Transmission pipe; 20. Water tank; 21. Roller; 22. Current meter; 23. Connecting wire; 24. Guide plate; 25. Drain pipe; 26. Surge arrester body; 27. Monitoring box; 28. Observation window. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 As shown, a surge arrester leakage current monitoring meter includes a base plate 1. A support column 2 is installed on the upper surface of the base plate 1. Two electric slide rails 5 are installed on the outer surface of the support column 2. A slider 6 is slidably connected to the outer surface of each electric slide rail 5. An annular plate 7 is installed on the outer surface of the two sliders 6. An annular slide rail 8 is installed on the upper surface of the annular plate 7. Two sliding plates 9 are slidably connected to the outer surface of the annular slide rail 8. A connection box 10 is installed on the upper surface of each sliding plate 9. A drive motor 11 is installed on the outer surface of each connection box 10. A threaded rod 12 is installed through the connection box 10 at the output end of each drive motor 11. A movable plate 13 is threadedly connected to the outer surface of each threaded rod 12. A rotary motor 14 is installed on the upper surface of one of the movable plates 13. A rotating rod 15 is installed at the output end of the rotary motor 14. A brush roller 16 is installed on the outer surface of the rotating rod 15. Driven by the rotary motor 14, the roller rotates at high speed and mechanically cleans the dust and dirt on the surface of the surge arrester body 26 through the contact of the brush bristles.

[0023] Another movable plate 13 has an electric push rod 17 installed on its upper surface, which allows the nozzle 18 to be more accurately aimed at the part of the surge arrester surface that needs to be washed, thus improving the washing effect. The nozzle 18 is installed at the output end of the electric push rod 17.

[0024] The outer surface of the nozzle 18 is connected to a transmission pipe 19. The end of the transmission pipe 19 away from the nozzle 18 is connected to a water storage tank 20 to store cleaning water, providing a water source for the nozzle 18 to rinse the surface of the surge arrester and ensuring the continuous cleaning process.

[0025] The bottom of the water tank 20 is equipped with multiple rollers 21, and the outer surface of the water tank 20 is equipped with an observation window 28.

[0026] A controller 3 is installed on the outer surface of the support column 2, and an alarm 4 is installed on the outer surface of the support column 2.

[0027] A monitoring box 27 is installed at the upper end of the support column 2. A current meter 22 is installed on the inner bottom wall of the monitoring box 27. A guide plate 24 is installed on the upper surface of the monitoring box 27. Its inclined structure can guide the sewage generated during the cleaning process to the drain pipe 25 to prevent sewage from seeping into the monitoring box 27. The bottom surface of the guide plate 24 is connected to the drain pipe 25.

[0028] The upper surface of the guide plate 24 is equipped with a surge arrester body 26, which is used to protect electrical equipment from high transient overvoltage. The bottom surface of the surge arrester body 26 is electrically connected to a connecting wire 23. The end of the connecting wire 23 away from the surge arrester body 26 passes through the guide plate 24 and the monitoring box 27 in sequence and is electrically connected to the outer surface of the current detection meter 22.

[0029] Working principle: The surge arrester body 26 is electrically connected to the current detector 22 in the monitoring box 27 via the connecting line 23. When the surge arrester is working, its leakage current is transmitted to the current detector 22 via the connecting line 23. The current detector 22 can measure and display the leakage current value in real time, providing data support for judging the insulation status of the surge arrester. The controller 3 is linked with the current detector 22. If the leakage current exceeds the preset normal range, the alarm 4 will be triggered to issue an alarm, promptly reminding the operation and maintenance personnel to pay attention to the abnormal situation. Before cleaning, the controller 3 starts the electric slide rail 5 to drive the slider 6 and the connected annular plate 7 to move up and down along the support column 2, adjusting the height of the cleaning mechanism so that it is aligned with the area of ​​the surge arrester body 26 that needs to be cleaned. The annular slide rail 8 drives the two slide plates 9 to slide along the annular track, adjusting the circumferential position of the brush roller 16 and the nozzle 18 around the surge arrester. To ensure thorough cleaning, the controller 3 starts the drive motor 11 to drive the threaded rod 12 to rotate, causing the movable plate 13 to move within the connecting box 10. This adjusts the distance between the brush roller 16 and the nozzle 18 and the surface of the surge arrester. When cleaning is required, the rotary motor 14 drives the rotating rod 15 and the brush roller 16 to rotate at high speed, mechanically cleaning the dust and dirt on the surface of the surge arrester. If further cleaning is needed, the electric push rod 17 can adjust the angle of the nozzle 18. The cleaning water in the water tank 20 is transported to the nozzle 18 through the transmission pipe 19 and sprayed out by the nozzle 18 to rinse the surface. This, combined with the brush roller 16, enhances the cleaning effect. Wastewater generated during the cleaning process can be collected along the guide plate 24 and discharged through the drain pipe 25 to avoid wastewater residue affecting the equipment. The rollers 21 at the bottom of the water tank 20 facilitate movement and water replenishment, and the observation window 28 allows for a direct view of the water level, ensuring continuous cleaning.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surge arrester leakage current monitoring meter, comprising a base plate (1), characterized in that, The upper surface of the base plate (1) is equipped with a support column (2). The outer surface of the support column (2) is equipped with two electric slide rails (5). The outer surface of each electric slide rail (5) is slidably connected with a slider (6). The outer surfaces of the two sliders (6) are jointly equipped with an annular plate (7). The upper surface of the annular plate (7) is equipped with an annular slide rail (8). The outer surface of the annular slide rail (8) is slidably connected with two slide plates (9). The upper surface of each slide plate (9) is equipped with a connecting box (10). The outer surface of each connecting box (10) is equipped with a drive motor (11). The output end of each drive motor (11) passes through the connecting box (10) and is equipped with a threaded rod (12). The outer surface of each threaded rod (12) is threadedly connected with a movable plate (13). The upper surface of one of the movable plates (13) is equipped with a rotary motor (14). The output end of the rotary motor (14) is equipped with a rotating rod (15). The outer surface of the rotating rod (15) is equipped with a brush roller (16).

2. The surge arrester leakage current monitoring meter according to claim 1, characterized in that: An electric push rod (17) is mounted on the upper surface of another movable plate (13), and a nozzle (18) is mounted on the output end of the electric push rod (17).

3. A surge arrester leakage current monitoring meter according to claim 2, characterized in that: The outer surface of the nozzle (18) is connected to a transmission pipe (19), and the end of the transmission pipe (19) away from the nozzle (18) is connected to a water storage tank (20).

4. A surge arrester leakage current monitoring meter according to claim 3, characterized in that: The bottom surface of the water storage tank (20) is equipped with multiple rollers (21), and the outer surface of the water storage tank (20) is equipped with an observation window (28).

5. A surge arrester leakage current monitoring meter according to claim 4, characterized in that: A controller (3) is installed on the outer surface of the support column (2), and an alarm (4) is installed on the outer surface of the support column (2).

6. A surge arrester leakage current monitoring meter according to claim 5, characterized in that: A monitoring box (27) is installed at the upper end of the support column (2), and a current meter (22) is installed on the inner bottom wall of the monitoring box (27).

7. A surge arrester leakage current monitoring meter according to claim 6, characterized in that: The upper surface of the monitoring box (27) is equipped with a guide plate (24), and the bottom surface of the guide plate (24) is connected to a drain pipe (25).

8. A surge arrester leakage current monitoring meter according to claim 7, characterized in that: The upper surface of the guide plate (24) is equipped with a surge arrester body (26), and the bottom surface of the surge arrester body (26) is electrically connected to a connecting line (23). The end of the connecting line (23) away from the surge arrester body (26) passes through the guide plate (24) and the monitoring box (27) in sequence and is electrically connected to the outer surface of the current detection meter (22).

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