Shock-resistant lightning arrester

Abstract

The utility model relates to the technical field of lightning arresters, and provides an anti-seismic lightning arrester, which comprises a base and a mounting seat, the mounting seat is positioned right above the base, the outer side of the mounting seat is sleeved with a fixedly connected first lantern ring, the periphery of the first lantern ring is provided with a plurality of holes, and the inner wall of each hole is fixedly connected with a rubber lining. The waterproof structure has the advantages that the damping sleeve is additionally arranged between the base and the mounting seat, double technical effects are achieved, on one hand, the damping sleeve can seal a gap in the connecting position of the base and the mounting seat, moisture invasion is effectively blocked, and the reliable waterproof purpose is achieved, and on the other hand, the damping sleeve can seal the gap in the connecting position of the base and the mounting seat. According to the utility model, vertical and horizontal bidirectional vibration energy can be absorbed, a traditional hard connection mode is replaced, and vibration is prevented from being directly transmitted to an internal structure, so that gaps between resistor discs or physical damage of the resistor discs caused by vibration are prevented.

Description

Technical Field

[0001] This utility model relates to the field of surge arrester technology, specifically to a seismic-resistant surge arrester. Background Technology

[0002] A surge arrester is an electrical device used to protect electrical equipment. It can withstand the hazards of high transient overvoltages caused by lightning strikes, while limiting the follow current time and usually also limiting the follow current amplitude. Therefore, it is sometimes called an overvoltage protector or overvoltage limiter.

[0003] In certain scenarios, surge arresters may experience performance defects or physical damage. When earthquakes, strong winds, or equipment maintenance work occur, even slight vibrations can cause the gaps between the surge arrester's resistor elements to widen and the contact pressure to decrease, resulting in an increase in local contact resistance. If the vibration amplitude exceeds the threshold, the brittle resistor elements may develop cracks, chipping, or other physical damage. Utility Model Content

[0004] The purpose of this invention is to provide an earthquake-resistant surge arrester to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a seismic-resistant surge arrester, comprising a base and a mounting base, the mounting base being located directly above the base, a first collar fixedly connected to the outer side of the mounting base, the first collar having several holes around its perimeter and rubber liners fixedly connected to the inner walls of the holes, an insulating cylinder mounted on the upper end of the mounting base, several resistors being snapped into the interior of the insulating cylinder, a group of silicone umbrellas fixedly connected to the outer side of the insulating cylinder, and a terminal block fixedly connected to the upper end of the insulating cylinder;

[0006] A shock-absorbing sleeve is provided between the base and the mounting base. The upper and lower ends of the shock-absorbing sleeve are respectively wrapped around the upper end of the base and the lower end of the mounting base. A second ring is fixedly connected to the outer side of the base. Several bottom rods are fixedly connected to the upper periphery of the second ring. A threaded rod is fixedly connected to the upper end of the bottom rod. The upper end of the threaded rod passes through the corresponding hole on the first ring. A threaded sleeve is fitted on the upper end of the threaded rod. A shock-absorbing ring is fitted on the lower end of the threaded rod.

[0007] Preferably, a positioning tube is fixedly connected to the upper end of the base, and a plug ring is fixedly connected to the lower end of the mounting base, with the plug ring inserted into the upper end of the positioning tube.

[0008] Preferably, the positioning tube and the base are located on the same vertical line, and the outer circumferential wall of the positioning tube abuts against the inner wall of the shock-absorbing sleeve.

[0009] Preferably, the upper end of the threaded rod has a hemispherical structure.

[0010] Preferably, the first and second rings abut against the upper and lower ends of the shock-absorbing sleeve, respectively.

[0011] The outer diameter of the damping ring is larger than the diameter of the corresponding hole on the first collar, and the upper and lower ends of the damping ring abut against the lower end of the first collar and the upper end of the corresponding bottom rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model achieves a dual technical effect by adding a shock-absorbing sleeve between the base and the mounting base. On the one hand, the shock-absorbing sleeve can seal the gap at the connection between the base and the mounting base, effectively blocking the intrusion of water and achieving a reliable waterproof purpose. On the other hand, it can absorb vertical and horizontal bidirectional vibration energy, replacing the traditional hard connection method and avoiding the vibration from being directly transmitted to the internal structure, thereby preventing the vibration from causing gaps between the resistors or causing physical damage to the resistors. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the present invention;

[0014] Figure 2 for Figure 1 Enlarged view of the area at point A in the middle;

[0015] Figure 3 This is a schematic diagram of the external structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the first ring structure of this utility model.

[0017] In the diagram: 1. Base; 2. Positioning tube; 3. Shock-absorbing sleeve; 4. Mounting base; 5. Insert ring; 6. Insulating cylinder; 7. Resistance element; 8. Silicone umbrella group; 9. Terminal block; 10. First ring; 11. Second ring; 12. Base rod; 13. Threaded rod; 14. Threaded sleeve; 15. Shock-absorbing ring. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-4 The present invention provides the following technical solution:

[0020] Example 1: A seismic-resistant surge arrester includes a base 1 and a mounting base 4. The mounting base 4 is located directly above the base 1. A first collar 10 is fixedly connected to the outer side of the mounting base 4. The first collar 10 has several holes around its periphery, and rubber liners are fixedly connected to the inner walls of the holes. An insulating cylinder 6 is installed at the upper end of the mounting base 4. Several resistor pieces 7 are snapped into the inside of the insulating cylinder 6. A group of silicone umbrellas 8 is fixedly connected to the outer side of the insulating cylinder 6. A terminal block 9 is fixedly connected to the upper end of the insulating cylinder 6.

[0021] In use, the insulating cylinder 6 at the upper end of the mounting base 4 provides an insulating protection space for the several internally snapped resistor pieces 7. The silicone umbrella group 8 on the outside of the insulating cylinder 6 can enhance the insulation performance and reduce the impact of the external environment on the internal structure. The wiring terminal 9 at the upper end of the insulating cylinder 6 is used to connect to external electrical equipment, so that the surge arrester can be connected to the circuit system. As a core component, the resistor piece 7 can resist the high transient overvoltage generated by lightning strikes and limit the follow current time and amplitude. When an overvoltage occurs, the overvoltage is conducted to the resistor piece 7 through the wiring terminal 9, and its resistance drops sharply to form a circuit. The large current is discharged to the ground through the grounding circuit of the base 1. After the overvoltage disappears, the resistor piece 7 returns to a high resistance state, the insulating components maintain isolation, the surge arrester returns to standby, and the overvoltage protection is realized, thereby realizing the lightning protection function for electrical equipment.

[0022] Example 2: The technical solution of this example, which differs from that of Example 1, includes: a shock-absorbing sleeve 3 is provided between the base 1 and the mounting base 4. The upper and lower ends of the shock-absorbing sleeve 3 are respectively wrapped around the upper end of the base 1 and the lower end of the mounting base 4. A second ring 11 is fixedly connected to the outer side of the base 1. Several bottom rods 12 are fixedly connected to the upper periphery of the second ring 11. A threaded rod 13 is fixedly connected to the upper end of the bottom rod 12. The upper end of the threaded rod 13 has a hemispherical structure. The upper end of the threaded rod 13 passes through the corresponding hole on the first ring 10. A threaded sleeve 14 is fitted on the upper end of the threaded rod 13. A shock-absorbing ring 15 is fitted on the lower end of the threaded rod 13. The outer diameter of the shock-absorbing ring 15 is larger than the diameter of the corresponding hole on the first ring 10. The upper and lower ends of the shock-absorbing ring 15 abut against the lower end of the first ring 10 and the upper end of the corresponding bottom rod 12.

[0023] A positioning tube 2 is fixedly connected to the upper end of the base 1. The positioning tube 2 and the base 1 are located on the same vertical line. The outer circumference of the positioning tube 2 abuts against the inner wall of the shock-absorbing sleeve 3. A plug ring 5 is fixedly connected to the lower end of the mounting base 4. The plug ring 5 is inserted into the upper end of the positioning tube 2. The first ring 10 and the second ring 11 abut against the upper and lower ends of the shock-absorbing sleeve 3, respectively.

[0024] During installation, the positioning tube 2 at the upper end of the base 1 cooperates with the insertion ring 5 at the lower end of the mounting seat 4 to ensure the accurate positioning of the mounting seat 4 directly above the base 1. At the same time, the outer circumferential wall of the positioning tube 2 abuts against the inner wall of the shock-absorbing sleeve 3, improving the installation stability of the shock-absorbing sleeve 3. When the upper end of the threaded rod 13 supports the first collar 20, rotate the mounting seat 3 until the threaded rod 13 aligns with the corresponding hole and passes through. The hemispherical design at the upper end of the threaded rod 13 can prevent scratching the first collar 20. Install the threaded sleeve 14 and tighten it on the upper end of the threaded rod 13 to fix the relative position of the first collar 10 and the second collar 11.

[0025] During operation, the shock-absorbing sleeve 3 between the base 1 and the mounting base 4 wraps around the upper end of the base 1 and the lower end of the mounting base 4, sealing the gap at the connection point to prevent moisture intrusion and achieve a waterproof effect. On the other hand, it can absorb vertical and horizontal bidirectional vibration energy, preventing vibration from being directly transmitted to the insulating cylinder 6 and the internal resistor 7. Meanwhile, the shock-absorbing ring 15 at the lower end of the threaded rod 13 (with an outer diameter larger than the corresponding hole diameter on the first collar 10) abuts against the lower end of the first collar 10 and the upper end of the base rod 12, further buffering the transmission of vibration. Combined with the design of the first collar 10 and the second collar 11 abutting against the upper and lower ends of the shock-absorbing sleeve 3 respectively, a multi-layer anti-vibration protection structure is formed, effectively preventing vibration from causing gaps or physical damage between the resistor 7, while ensuring the overall waterproof performance and lightning protection function of the structure.

[0026] 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 seismic arrester, comprising a base (1) and a mounting base (4), wherein the mounting base (4) is located directly above the base (1), and a first collar (10) is fixedly connected to the outer side of the mounting base (4), wherein the first collar (10) has several holes around its periphery and a rubber liner is fixedly connected to the inner wall of the holes, an insulating cylinder (6) is installed at the upper end of the mounting base (4), several resistors (7) are snapped into the inside of the insulating cylinder (6), a silicone umbrella group (8) is fixedly connected to the outer side of the insulating cylinder (6), and a terminal block (9) is fixedly connected to the upper end of the insulating cylinder (6). Its features are: A shock-absorbing sleeve (3) is provided between the base (1) and the mounting seat (4). The upper and lower ends of the shock-absorbing sleeve (3) are respectively wrapped around the upper end of the base (1) and the lower end of the mounting seat (4). A second ring (11) is fixedly connected to the outer side of the base (1). Several bottom rods (12) are fixedly connected to the upper periphery of the second ring (11). A threaded rod (13) is fixedly connected to the upper end of the bottom rod (12). The upper end of the threaded rod (13) passes through the corresponding hole on the first ring (10). A threaded sleeve (14) is fitted on the upper end of the threaded rod (13). A shock-absorbing ring (15) is fitted on the lower end of the threaded rod (13).

2. The seismic-resistant surge arrester according to claim 1, characterized in that: The upper end of the base (1) is fixedly connected to a positioning tube (2), and the lower end of the mounting base (4) is fixedly connected to a plug ring (5), which is inserted into the upper end of the positioning tube (2).

3. The seismic-resistant surge arrester according to claim 2, characterized in that: The positioning tube (2) and the base (1) are located on the same vertical line, and the outer circumferential wall of the positioning tube (2) and the inner wall of the shock-absorbing sleeve (3) abut against each other.

4. The seismic-resistant surge arrester according to claim 1, characterized in that: The upper end of the threaded rod (13) has a hemispherical structure.

5. A seismic-resistant surge arrester according to claim 1, characterized in that: The first ring (10) and the second ring (11) abut against the upper and lower ends of the shock-absorbing sleeve (3), respectively.

6. The seismic-resistant surge arrester according to claim 1, characterized in that: The outer diameter of the damping ring (15) is larger than the diameter of the corresponding hole on the first collar (10), and the upper and lower ends of the damping ring (15) abut against the lower end of the first collar (10) and the upper end of the corresponding bottom rod (12).

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