Gapless lightning arrester with fault remote transmission function

Abstract

The utility model discloses a gapless lightning arrester with a fault remote transmission function in the technical field of lightning protection of distribution lines and power stations. The gapless lightning arrester comprises a battery box, an on-line monitoring box, a disconnector, a lightning arrester body, a rotating plate, a rotating shaft, an L-shaped plate, a battery box, a wire, a PCB (Printed Circuit Board), a spring, a battery, a phenolic resin shell, a weak ring and a damper, according to the utility model, the problems that the battery replacement process of the lightning arrester is tedious and the explosion intensity of the disconnector is uncontrollable are solved; the system can monitor the electric quantity of the battery in real time and notify operation and maintenance personnel to replace the battery at a proper time when the electric quantity of the battery is lower than a set value; battery replacement is simple and fast; and the rotating plate and the L-shaped plate are protected from being damaged and deformed, so that the situation that the lightning arrester body is difficult to install due to the deformation of the rotating plate when being replaced with a new lightning arrester body is avoided.

Description

Technical Field

[0001] This utility model relates to the field of lightning protection technology for power distribution lines and power stations, specifically a gapless surge arrester with fault remote transmission capability. Background Technology

[0002] Surge arresters are the most effective lightning protection measure for overhead power transmission and distribution lines and substations. Surge arresters are divided into two main categories: gapped surge arresters and gapless surge arresters. Gapped surge arresters are generally used to protect line insulators, while gapless surge arresters are used to protect substations, disconnect switches, etc.

[0003] Gapless surge arresters are generally used in conjunction with disconnectors. When the surge arrester itself is damaged, the disconnector will trip, requiring maintenance personnel to locate the fault along the line, then shut down the power to replace the entire product. This increases the workload of maintenance personnel and has a certain impact on the reliability of power supply.

[0004] However, utilizing technologies such as the "energized installation device for surge arresters" disclosed in patent publication number CN216215804U allows for the uninterrupted disassembly and replacement of the entire surge arrester during maintenance, reducing the risk of power outages, improving the reliability of power grid operation, and simplifying maintenance. However, when surge arresters on distribution lines or equipment fail, maintenance personnel cannot be notified promptly. This lack of timely fault information prevents timely replacement of faulty surge arresters, leaving lines and equipment operating without protection, which can easily lead to line and equipment failures.

[0005] A gapless surge arrester with remote fault transmission capability and the ability to replace the arrester body under energized conditions can solve the above problems. When the trip unit operates, the online monitoring module can detect the trip unit's operation and transmit the operation signal to a mobile app via a wireless network. After receiving the information, maintenance personnel can replace the surge arrester body under energized conditions. This device can reduce the workload of maintenance personnel and improve power supply reliability.

[0006] Based on this, the current technology mainly suffers from the problems of cumbersome replacement process for surge arresters and uncontrollable explosion intensity of disconnectors. Utility Model Content

[0007] The purpose of this invention is to provide a gapless surge arrester with fault transmission capability, in order to solve the problems mentioned in the background art, such as the cumbersome battery replacement process and the uncontrollable explosion intensity of the disconnector.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a gapless surge arrester with fault remote transmission capability, comprising a battery box, an online monitoring box, a disconnector, a surge arrester body, a rotating plate, a rotating shaft, an L-shaped plate, a battery box, a spring, a battery, a phenolic resin shell, and a weak ring.

[0009] The disconnector is connected to the lower end of the surge arrester body;

[0010] One end of the rotating plate is connected to the release device, and the other end is connected to the L-shaped plate via a rotating shaft;

[0011] The online monitoring box is mounted on the L-shaped plate, and the battery box is fixed to the side wall of the online monitoring box;

[0012] The battery box cover is threaded to the opening of the battery box, and the spring is located on the side of the battery box cavity opposite to the battery box cover, and the spring force direction is consistent with the direction of the battery entering and exiting the battery box.

[0013] A weak ring is provided on the phenolic resin shell of the release device.

[0014] Preferably, the battery box is connected to the side wall of the battery box cover by an anti-loss rubber band.

[0015] Preferably, the spring is used to contact the negative terminal of the battery; the battery box cover is connected to the PCB board inside the online monitoring box via a wire.

[0016] Preferably, a sealing ring is provided between the battery box and the battery box cover.

[0017] Preferably, the spring is wound with shorting copper wire to eliminate the influence of the spring's own inductance on the system.

[0018] Preferably, the rotating plate is covered with a silicone rubber jacket to mitigate impact damage.

[0019] Preferably, a damper is provided on the side of the L-shaped plate that mates with the rotating plate.

[0020] Preferably, the weak ring is located at the axial halfway point of the phenolic resin shell.

[0021] Compared with the prior art, the beneficial effects of this utility model are: this utility model can monitor the battery power in real time and notify the maintenance personnel to replace the battery at an appropriate time when the battery power is lower than the set value; the battery can be ejected from the battery box immediately when the battery box cover is opened by the spring force, making battery replacement simple and quick; by setting a damper and a silicone rubber jacket, the rotating plate and L-shaped plate are protected from damage and deformation, avoiding difficulties in installation due to deformation of the rotating plate when replacing the new surge arrester body. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the normal structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the online monitoring box and battery box of this utility model;

[0025] Figure 3 This is a schematic diagram of the rotating plate assembly structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the detachment device structure of this utility model.

[0027] 1. Battery box; 2. Online monitoring box; 3. Disconnector; 4. Surge arrester body; 5. Rotating plate; 6. Rotating shaft; 7. L-shaped plate; 8. Battery box cover; 9. Anti-loss rubber strip; 10. Wire; 11. PCB board; 12. Spring; 13. Battery; 14. Shorting copper wire; 15. Phenolic resin shell; 16. Weak ring; 17. Silicone rubber jacket; 18. Damper; 19. Sealing ring. Detailed Implementation

[0028] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] One embodiment of this utility model:

[0030] like Figure 1-4 As shown, it includes a battery box 1, an online monitoring box 2, a disconnector 3, a surge arrester body 4, a rotating plate 5, a rotating shaft 6, an L-shaped plate 7, a battery box cover 8, a wire 10, a PCB board 11, a spring 12, a battery 13, a phenolic resin shell 15, a weak ring 16, and a damper 18.

[0031] The L-shaped plate 7 is fixedly installed relative to the surge arrester body 4.

[0032] The disconnector 3 includes a phenolic resin housing 15 and is threadedly connected to the lower end of the surge arrester body 4.

[0033] A weak ring 16 is provided at the axial half of the phenolic resin shell 15. The release device 3 controls the impact force of the internal explosive to the equivalent amount required to break through the weak ring 16, thus achieving controllable explosion intensity when the release device 3 is activated. This ensures that after the release device 3 explodes, the weak ring 16 breaks, causing the phenolic resin shell 15 to split into upper and lower parts, preventing a pulverized explosion.

[0034] The online monitoring box 2 is installed on the L-shaped plate 7, and the battery box 1 is fixed to the side wall of the online monitoring box 2.

[0035] Battery box 1 is connected to PCB board 11 inside online monitoring box 2 via wire 10 to realize electrical connection between battery 13 and PCB board 11. Through program control, the power of battery 13 is monitored in real time. When the power of battery 13 is lower than the set value, a signal is sent to remind maintenance personnel to replace battery 13.

[0036] The battery box cover 8 is threaded to the opening of the battery box 1. The spring 12 is located on the side opposite to the battery box cover 8 inside the battery box 1. The direction of the spring force of the spring 12 is the same as the direction of the battery 13 entering and exiting the battery box 1. The positive terminal of the battery 13 is in contact with the positive terminal plate on the battery box cover 8. The positive terminal plate on the battery box cover 8 is connected to the PCB board 11 inside the online monitoring box 2 through the corresponding wire.

[0037] One end of the spring 12 is fixed to the bottom of the inner hole of the battery box 1, and the other end is in contact with the negative terminal of the battery 13. By controlling the depth of the battery box 1 and the elastic force of the spring 12, the battery can be automatically ejected when the battery box cover 8 is opened.

[0038] A shorting copper wire 14 is wound around the spring 12 to eliminate the influence of the spring 12's own inductance on the system.

[0039] The battery box cover 8 is screwed onto the battery box 1 by threads. At the same time, the battery box 1 and the side wall of the battery box cover 8 are connected by an anti-loss rubber band 9, which ensures that the connection between the battery box cover 8 and the battery box 1 prevents the battery box cover 8 from being lost when it is opened.

[0040] A sealing ring 19 is provided between the battery box 1 and the battery box cover 8 to prevent rainwater and moisture from entering when used outdoors.

[0041] One end of the rotating plate 5 is connected to the release device 3, and the other end is connected to the L-shaped plate 7 through the rotating shaft 6. The rotating plate 5 rotates around the rotating shaft 6 towards the L-shaped plate 7.

[0042] The outer side of the rotating plate 5 is covered with a silicone rubber jacket 17, which helps to mitigate collision damage.

[0043] The L-shaped plate 7 is equipped with a damper 18, which can reduce the intensity of the collision between the rotating plate 5 and the L-shaped plate 7 when the release device 3 is activated.

[0044] Connect the disconnector 3 to the lower end of the surge arrester body 4 via a threaded connection; then connect one end of the rotating plate 5 to the lower side of the disconnector 3, and the other end to the L-shaped plate 7 via the rotating shaft 6. Next, place the battery 13 inside the battery box 1, and screw the battery box cover 8 onto the battery box 1 via threads. Then, fix the battery box 1 to the side wall of the online monitoring box 2 via threads, and connect the wires 10 on the battery box 1 to the PCB board 11 inside the online monitoring box 2. Finally, fix the online monitoring box 2 to the L-shaped plate 7.

[0045] In addition, a program is input into the battery power monitoring module on PCB board 11. This program controls and sets a minimum battery power level for battery 13. When the battery power level falls below the set value, the battery power monitoring module on PCB board 11 sends a signal via wireless network to a mobile app, notifying maintenance personnel to replace battery 13 at an appropriate time. To replace battery 13, simply unscrew the battery case cover 8; battery 13 will automatically pop out under the action of spring 12, allowing the new battery 13 to be inserted. Then, screw the battery case cover 8 back on; battery 13 replacement is complete.

[0046] When the arrester body 4 is damaged due to moisture absorption caused by sealing failure or by lightning current exceeding its capacity, leakage current will flow through the silicon carbide resistor inside the disconnector 3 due to the series connection between the disconnector 3 and the arrester body 4. This causes the silicon carbide resistor to heat up, and when the current reaches a certain value, the heat generated by the silicon carbide resistor will detonate the explosive inside the disconnector 3, impacting the weak ring 16 on the phenolic resin shell 15 and causing the weak ring 16 to break. The lower half of the disconnector 3 rotates around the rotating shaft 6 together with the rotating plate 5. When the rotating plate 5 approaches the L-shaped plate 7, the damper 18 starts to work, slowing down the movement speed of the rotating plate 5. When the rotating plate 5 is about 2mm away from the L-shaped plate 7, the silicone rubber jacket 17 outside the rotating plate 5 begins to contact the L-shaped plate 7, producing elastic deformation. This prevents the rotating plate 5 from directly colliding with the L-shaped plate 7, protecting the rotating plate 5 and the L-shaped plate 7 from damage and deformation, and avoiding installation difficulties caused by the deformation of the rotating plate 5 when replacing the arrester body 4. Furthermore, after the disconnector 3 is activated, the PCB board 11 sends out a fault signal via the triggering device.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A gapless surge arrester with fault transmission capability, characterized in that: It includes a battery box (1), an online monitoring box (2), a disconnector (3), a surge arrester body (4), a rotating plate (5), a rotating shaft (6), an L-shaped plate (7), a battery box cover (8), a spring (12), a battery (13), a phenolic resin shell (15), and a weak ring (16). The disconnector (3) is connected to the lower end of the surge arrester body (4); One end of the rotating plate (5) is connected to the release device (3), and the other end is connected to the L-shaped plate (7) through the rotating shaft (6); The online monitoring box (2) is mounted on the L-shaped plate (7), and the battery box (1) is fixed to the side wall of the online monitoring box (2); The battery box cover (8) is threaded to the opening of the battery box (1). The spring (12) is located on the side of the inner cavity of the battery box (1) opposite to the battery box cover (8), and the spring force direction of the spring (12) is consistent with the direction of the battery (13) entering and exiting the battery box (1). A weak ring (16) is provided on the phenolic resin shell (15) of the release device (3).

2. A gapless surge arrester with fault remote transmission capability according to claim 1, characterized in that: The battery box (1) is connected to the side wall of the battery box cover (8) by an anti-loss rubber band (9).

3. A gapless surge arrester with fault remote transmission capability according to claim 1, characterized in that: The spring (12) is used to contact the negative terminal of the battery (13); the battery box cover (8) is connected to the PCB board (11) inside the online monitoring box (2) via a wire (10).

4. A gapless surge arrester with fault remote transmission capability according to claim 1, characterized in that: A sealing ring (19) is provided between the battery box (1) and the battery box cover (8).

5. A gapless surge arrester with fault remote transmission capability according to claim 1, characterized in that: The spring (12) is wound with short-circuit copper wire (14) to eliminate the influence of the spring (12)'s own inductance on the system.

6. A gapless surge arrester with fault remote transmission capability according to claim 1, characterized in that: The rotating plate (5) is covered with a silicone rubber jacket (17).

7. A gapless surge arrester with fault remote transmission capability according to claim 1, characterized in that: A damper (18) is provided on the side of the L-shaped plate (7) that cooperates with the rotating plate (5).

8. A gapless surge arrester with fault remote transmission capability according to claim 1, characterized in that: The weak ring (16) is located at the axial halfway point of the phenolic resin shell (15).

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