On-line monitoring device for lightning arrester of power system

Abstract

The utility model discloses a power system lightning arrester on-line monitoring device, which belongs to the technical field of lightning arrester monitoring, and comprises a lightning arrester main body, an installation ring is provided with a contraction groove through a clamping groove, the installation ring is fixedly connected with a spring through the contraction groove, and one end, far away from the installation ring, of the spring is fixedly connected with a limiting plate. The side, away from the spring, of the limiting plate is fixedly connected with a positioning block, and the protective shell is made of aluminum alloy. According to the online monitoring device for the lightning arrester of the power system, through the arrangement of the mounting ring, the protective shell, the clamping block, the clamping groove, the spring and the positioning block, the protective shell is arranged on the outer side wall of the mounting ring in a sleeving mode, the positioning block is extruded through the spring, the clamping block is fixed through the positioning block, and therefore the protective shell is fixed to the outer side wall of the mounting ring; and the protective shell is made of an aluminum alloy material, so that external electromagnetic waves can be counteracted and attenuated, the electromagnetic waves are prevented from entering the device, and the influence of the electromagnetic waves on the monitor is effectively prevented.

Description

Technical Field

[0001] This utility model belongs to the field of surge arrester monitoring technology, specifically, it relates to an online monitoring device for surge arresters in power systems. Background Technology

[0002] Surge arresters play a crucial role in the operation of power systems, effectively protecting electrical equipment from lightning strikes and overvoltage damage.

[0003] The power system itself is surrounded by complex electromagnetic fields, such as alternating electromagnetic fields generated by the operation of other electrical equipment in the substation. These electromagnetic fields may interfere with the acquisition and transmission of signals by the monitoring device, causing external electromagnetic interference to be superimposed on the normal signal, thereby distorting the signal received by the monitoring device and leading to inaccurate monitoring results in the final analysis.

[0004] To address the aforementioned issues, this application proposes an online monitoring device for power system surge arresters. Utility Model Content

[0005] In view of the problems in related technologies, this utility model proposes an online monitoring device for power system surge arresters to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An online monitoring device for a power system surge arrester includes a surge arrester body. A mounting plate is fixedly connected to the bottom of the surge arrester body. A fixing plate is attached to the outer wall of the mounting plate. A mounting ring is attached to the side of the fixing plate away from the mounting plate. A protective shell is fitted onto the side of the mounting ring away from the fixing plate. A locking block is fixedly connected to the inner wall of the protective shell. A locking groove is formed on the outer wall of the mounting ring. A contraction groove is formed on the mounting ring through the locking groove. A spring is fixedly connected to the mounting ring through the contraction groove. A limiting plate is fixedly connected to the end of the spring away from the mounting ring. A positioning block is fixedly connected to the side of the limiting plate away from the spring. The protective shell is made of aluminum alloy.

[0008] The positioning block is arc-shaped on the side near the card block, and the outer wall of the limiting plate is adapted to the inner wall of the shrinkage groove.

[0009] A connecting plate is fixedly connected to the outer side wall of the surge arrester body, and the end of the connecting plate away from the surge arrester body is fixedly connected to the fixing plate.

[0010] The monitor housing is fixedly connected to the side of the fixing plate away from the mounting plate. The outer wall of the protective shell has a ventilation opening, and the outer wall of the monitor housing has heat dissipation holes.

[0011] The outer wall of the monitor housing is provided with a recording table and a display screen, and the protective shell is provided with an observation window on the side away from the monitor housing.

[0012] The monitor housing contains a PLC controller, a data processing center, current and voltage sensors, a data acquisition unit, and a data storage device. The recording table is electrically connected to the current and voltage sensors, and the display screen is communicatively connected to the data processing center.

[0013] The mounting plate, fixing plate, and mounting ring have mounting holes on their outer side walls, and the mounting plate is threadedly connected to mounting bolts through the mounting holes.

[0014] In summary, the technical effects and advantages of this utility model are as follows: This online monitoring device for power system surge arresters, through the installation ring, protective shell, locking block, locking groove, spring, and positioning block, allows the protective shell to be fitted onto the outer wall of the installation ring. Furthermore, the spring compresses the positioning block, fixing it to the locking block, thus securing the protective shell to the outer wall of the installation ring. This allows the protective shell to fit over the monitor. Since the protective shell is made of aluminum alloy, it can cancel and attenuate external electromagnetic waves, preventing them from entering the device and effectively preventing electromagnetic waves from affecting the monitor. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the protective shell and related structures of this utility model;

[0017] Figure 3 This is a schematic diagram of the monitor housing and related structures of this utility model;

[0018] Figure 4 This is a schematic diagram of the positioning block and related structures of this utility model;

[0019] Figure 5 This is a schematic diagram of the heat dissipation holes and related structures of this utility model.

[0020] In the diagram: 1. Surge arrester body; 2. Mounting plate; 3. Connecting plate; 4. Fixing plate; 5. Mounting ring; 6. Protective shell; 7. Locking block; 8. Locking groove; 9. Shrinkage groove; 10. Spring; 11. Limiting plate; 12. Positioning block; 13. Observation window; 14. Ventilation opening; 15. Monitor housing; 16. Heat dissipation hole; 17. Recording table; 18. Display screen; 19. PLC controller; 20. Data processing center; 21. Current and voltage sensor; 22. Data acquisition unit; 23. Data storage device; 24. Mounting hole; 25. Mounting bolt. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1 An online monitoring device for a power system surge arrester includes a surge arrester body 1. A mounting plate 2 is fixedly connected to the bottom of the surge arrester body 1. A fixing plate 4 is attached to the outer side wall of the mounting plate 2. A mounting ring 5 is attached to the side of the fixing plate 4 away from the mounting plate 2. A protective shell 6 is fitted onto the side of the mounting ring 5 away from the fixing plate 4. A locking block 7 is fixedly connected to the inner side wall of the protective shell 6. A locking groove 8 is formed on the outer side wall of the mounting ring 5. A contraction groove 9 is formed on the mounting ring 5 through the locking groove 8. A spring 10 is fixedly connected to the mounting ring 5 through the contraction groove 9. A limiting plate 11 is fixedly connected to the end of the spring 10 away from the mounting ring 5. A positioning block 12 is fixedly connected to the side of the limiting plate 11 away from the spring 10. The protective shell 6 is made of aluminum alloy, providing protection... The housing 6 is inserted into the slot 8 via the locking block 7. The slot 8 is L-shaped, allowing the locking block 7 to move along it and enter the slot 8. Upon entry, the locking block 7 can press the positioning block 12, causing it to enter the shrinkage groove 9. This allows the locking block 7 to enter the bottom of the slot 8. The positioning block 12 is limited by the compression of the spring 10, preventing the locking block 7 from shaking inside the slot 8. The protective housing 6 is thus fixed and limited inside the mounting ring 5 by the locking block 7, allowing it to be fitted onto the outside of the monitor. The protective housing 6, made of aluminum alloy, can cancel and attenuate external electromagnetic waves, preventing them from entering the device and effectively preventing electromagnetic waves from affecting the monitor.

[0023] Reference Figure 1 The positioning block 12 is arc-shaped on the side near the locking block 7. The outer wall of the limiting plate 11 is adapted to the inner wall of the shrinkage groove 9. The upper end of the positioning block 12 away from the limiting plate 11 is arc-shaped, so that when the locking block 7 moves along the slot 8, the arc shape squeezes the positioning block 12, causing the positioning block 12 to drive the limiting plate 11 to squeeze the spring 10, thereby causing the positioning block 12 to retract into the shrinkage groove 9, and the locking block 7 to enter the inner bottom of the slot 8. The spring 10 can also squeeze the positioning block 12, so that the positioning block 12 squeezes and fixes the locking block 7. Thus, the locking block 7 can squeeze and fix the protective shell 6, preventing the protective shell 6 from shaking.

[0024] Reference Figure 1A connecting plate 3 is fixedly connected to the outer wall of the surge arrester body 1. The end of the connecting plate 3 away from the surge arrester body 1 is fixedly connected to the fixing plate 4. A connecting line is provided inside the connecting plate 3 to protect the internal connecting line. The surge arrester body 1 and the fixing plate 4 are connected through the connecting plate 3, so that the monitor can monitor the important parameters such as the operating status, discharge number, and discharge current of the surge arrester in real time.

[0025] Reference Figure 1 The monitoring housing 15 is fixedly connected to the side of the fixing plate 4 away from the mounting plate 2. The outer wall of the protective shell 6 is provided with a ventilation opening 14, and the outer wall of the monitoring housing 15 is provided with a heat dissipation hole 16. By fitting the protective shell 6 over the outside of the monitoring housing 15, the ventilation opening 14 on the outer wall of the protective shell 6 dissipates heat from the monitoring device inside the monitoring housing 15. The ventilation opening 14 is provided with an air intake mesh made of metal wire to prevent external dust, rainwater and other impurities from entering.

[0026] Reference Figure 1 The outer wall of the monitor housing 15 is provided with a recording table 17 and a display screen 18. The protective shell 6 is provided with an observation window 13 on the side away from the monitor housing 15. The recording table 17 and display screen 18 on the outer wall of the monitor housing 15 are connected to the monitor, so that the recording table 17 and display screen 18 can display the monitoring data. The observation window 13 on the side of the protective shell 6 away from the monitor housing 15 is transparent, so that the recording table 17 and display screen 18 can be observed through the observation window 13, thereby reducing the disassembly steps of the protective shell 6.

[0027] Reference Figure 1 The monitor housing 15 houses a PLC controller 19, a data processing center 20, a current and voltage sensor 21, a data acquisition unit 22, and a data storage unit 23. The recording table 17 is electrically connected to the current and voltage sensor 21, and the display screen 18 is communicatively connected to the data processing center 20. The current and voltage sensor 21 inside the monitor housing 15 detects the surge arrester body 1, and then the data is processed by the data acquisition unit 22 and the data processing center 20. The data is then stored in the data storage unit 23, and the data can be displayed by connecting the data storage unit 23 to the recording table 17 and the display screen 18.

[0028] Reference Figure 1The mounting plate 2, fixing plate 4, and mounting ring 5 have mounting holes 24 on their outer side walls. The mounting plate 2 is threaded with mounting bolts 25 through the mounting holes 24. The mounting holes 24 on the outer side walls of the mounting plate 2, fixing plate 4, and mounting ring 5 are adapted to the mounting bolts 25, so that the mounting bolts 25 pass through the mounting holes 24, and the fixing plate 4 and mounting ring 5 are fixed to the outer side wall of the mounting plate 2. This allows the monitor to be installed and fixed, effectively preventing the monitor from falling or shaking, and enabling the monitor to effectively monitor the surge arrester.

[0029] Working principle: The fixing plate 4 and the mounting ring 5 are fixed to the outer wall of the mounting plate 2 by the mounting bolts 25, so that the fixing plate 4 can fix the monitor housing 15 and internal parts. The protective shell 6 is sleeved on the outer wall of the monitor housing 15, and the locking block 7 enters the slot 8 for limiting. The spring 10 drives the positioning block 12 to further fix the locking block 7, preventing the protective shell 6 from shaking and effectively keeping the monitor stable. The heat dissipation holes 16 opened on the outer wall of the monitor housing 15 can provide ventilation for the internal parts of the monitor housing 15. For heat dissipation, the ventilation openings 14 on the outer wall of the protective shell 6 can isolate external dust and other impurities. The ventilation openings 14 are located at the bottom of the protective shell 6, which can prevent rainwater from entering the interior of the protective shell 6. The data obtained by the PLC controller 19, data processing center 20, current and voltage sensors 21 and data acquisition unit 22 are displayed through the record table 17 and the display screen 18. Furthermore, the protective shell 6 made of aluminum alloy and the connecting plate 3 cancel and attenuate external electromagnetic waves, thereby preventing electromagnetic waves from entering the device and effectively preventing electromagnetic waves from affecting the monitor.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An on-line monitoring device for a power system surge arrester, comprising a surge arrester body (1), characterized in that, The bottom of the surge arrester body (1) is fixedly connected to an installation plate (2). A fixing plate (4) is attached to the outer side of the installation plate (2). An installation ring (5) is attached to the side of the fixing plate (4) away from the installation plate (2). A protective shell (6) is fitted on the side of the installation ring (5) away from the fixing plate (4). A locking block (7) is fixedly connected to the inner side of the protective shell (6). A locking groove (8) is opened on the outer side of the installation ring (5). A shrinkage groove (9) is opened on the installation ring (5) through the locking groove (8). A spring (10) is fixedly connected to the installation ring (5) through the shrinkage groove (9). A limiting plate (11) is fixedly connected to the end of the spring (10) away from the installation ring (5). A positioning block (12) is fixedly connected to the side of the limiting plate (11) away from the spring (10). The protective shell (6) is made of aluminum alloy.

2. The on-line monitoring device for power system surge arresters according to claim 1, characterized in that, The positioning block (12) is arc-shaped on the side near the card block (7), and the outer wall of the limiting plate (11) is adapted to the inner wall of the shrinkage groove (9).

3. The on-line monitoring device for power system surge arresters according to claim 1, characterized in that, A connecting plate (3) is fixedly connected to the outer wall of the surge arrester body (1), and the end of the connecting plate (3) away from the surge arrester body (1) is fixedly connected to the fixing plate (4).

4. The on-line monitoring device for power system surge arresters according to claim 1, characterized in that, The monitoring housing (15) is fixedly connected to the side of the fixing plate (4) away from the mounting plate (2). The outer side wall of the protective shell (6) is provided with a ventilation opening (14), and the outer side wall of the monitoring housing (15) is provided with a heat dissipation hole (16).

5. An on-line monitoring device for power system arresters according to claim 4, characterized in that, The outer wall of the monitor housing (15) is provided with a recording table (17) and a display screen (18), and the protective shell (6) is provided with an observation window (13) on the side away from the monitor housing (15).

6. An on-line monitoring device for power system arresters according to claim 5, characterized in that, The monitor housing (15) is equipped with a PLC controller (19), a data processing center (20), a current and voltage sensor (21), a data acquisition unit (22), and a data storage unit (23). The recording table (17) is electrically connected to the current and voltage sensor (21), and the display screen (18) is communicatively connected to the data processing center (20).

7. The online monitoring device for surge arresters in a power system according to claim 1, characterized in that, The mounting plate (2), the fixing plate (4) and the mounting ring (5) have mounting holes (24) on their outer side walls, and the mounting plate (2) is threaded with mounting bolts (25) through the mounting holes (24).

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