Linear rod double-gap lightning protection overvoltage protection assembly

Abstract

The invention relates to the field of overvoltage protection devices, and discloses a linear rod double-gap lightning protection overvoltage protection assembly which comprises a mounting rack, two sliding frames are slidably connected to the outer wall of the mounting rack, connecting plates are fixed to the front sides of the sliding frames, a first lightning arrester is fixed to the top face of the connecting plate on the left side, and a second lightning arrester is fixed to the top face of the connecting plate on the right side. A connecting wire is fixed to the top end of the first lightning arrester, a second lightning arrester is arranged at one end of the connecting plate on the right side, and the second lightning arrester is a magnetic blow-out valve type lightning arrester. According to the invention, through mutual cooperation of the first metal column, the second metal column, the first electrode and the second electrode, mutual cooperation can be carried out when gaps are broken down by lightning, so that when one gap is broken down due to a certain reason, the other gap can still play a role, overvoltage energy is dispersed, the burden of a single gap is reduced, and the reliability of the device is improved. And the service life of the assembly is prolonged, so that overvoltage energy is guided to the ground, and lines and related equipment are protected from being damaged.

Description

Technical Field

[0001] This invention relates to the technical field of overvoltage protection devices, specifically to a linear pole double-gap lightning protection overvoltage protection assembly. Background Technology

[0002] Lightning strikes are the primary cause of tripping in overhead transmission lines, and frequent tripping can disrupt the safe and stable operation of the power grid. Operational experience shows that installing surge arresters in sections of lines with intense lightning activity or high soil resistivity, where reducing grounding resistance is difficult, is an effective way to reduce lightning tripping rates. Surge arresters can significantly improve the lightning withstand capability of transmission lines and reduce their lightning flashover rate.

[0003] Traditional surge protection components typically use a single ordinary surge arrester to protect the equipment. However, a single surge arrester has poor adaptability in harsh environments and cannot flexibly disperse overvoltages, which can easily increase the operating load of the surge arrester and the equipment, thereby reducing the protection effect of the component. Summary of the Invention

[0004] The purpose of this invention is to provide a linear pole double-gap lightning overvoltage protection component to solve the problem that lightning overvoltage protection components usually use a single ordinary surge arrester to protect the equipment. However, a single surge arrester has poor adaptability in harsh environments and cannot flexibly disperse overvoltages, which easily increases the operating load of the surge arrester and the equipment.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: a linear rod double-gap lightning overvoltage protection component, comprising a mounting frame, two sliding frames slidably connected to the outer wall of the mounting frame, a connecting plate fixed to the front side of the sliding frames, a first surge arrester fixed to the top surface of the left connecting plate, a connecting wire fixed to the top of the first surge arrester, and a second surge arrester disposed at one end of the right connecting plate. The second surge arrester is a magnetic blow-out valve type surge arrester. Mounting grooves are provided on the outer walls of both the first and second surge arresters. A first metal column is fixed to the inner wall of the mounting groove on the first surge arrester, and a second metal column is fixed to the inner wall of the mounting groove on the second surge arrester. A gap is formed between the first and second metal columns. A fixing frame is fixed to the outer wall of the second surge arrester. One side of the fixing frame is fixed to one end of the connecting plate. The top of the second surge arrester is fixed with a first electrode. The bottom of both the first and second surge arresters are fixed with grounding bolts. The bottom of the grounding bolt is fixed with a ground wire. A connecting ring is fixed to the outer wall of the grounding bolt. A second electrode is fixed to the outer wall of the connecting ring. A gap is formed between the second electrode and the first electrode. Under overvoltage, the gap breaks down. The lightning current forms a residual voltage through the resistance of the second valve plate of the second surge arrester. It does not exceed the insulation level of the protected electrical equipment and enters the ground. The lightning voltage acts on the valve plate, and the small air gaps between the diamond particles constituting the valve plate are broken down, which increases the contact area between the particles, reduces the resistance, and makes it easy for the lightning current to pass through. The voltage drop on the valve plate is reduced, thereby protecting the insulation of the protected electrical equipment from being broken down.

[0006] Preferably, a connecting sleeve is fixed on the ground wire, and a varistor is provided on the inner wall of the connecting sleeve. The ground wire is connected to the varistor, which can increase the voltage conduction speed, so that the overvoltage can be quickly dispersed and conducted.

[0007] Preferably, the outer wall of the connecting plate is fixed with an insulating bracket, which provides electrical insulation to prevent current from flowing on the connecting plate and ensures that the current can only flow to the ground through the first surge arrester or the second surge arrester under the action of the ground wire, rather than through other possible paths, thereby protecting the power equipment from damage by overvoltage.

[0008] Preferably, a plurality of positioning holes are provided on one side of the mounting bracket, and a fixing hole is provided on one side of the sliding frame. The fixing hole corresponds to the positioning hole. A limit post is slidably provided on the inner wall of the fixing hole. The limit post is slidably provided with the positioning hole. A spring is wound around the outer wall of the limit post. One end of the spring is fixed to the inner wall of the fixing hole, and the other end of the spring is fixed to the outer wall of the limit post. A pull ring is fixed to one end of the limit post. The pull ring allows the operator to easily pull the limit post, enabling the operator to quickly adjust the position of the sliding frame and move the sliding frame conveniently on the outer wall of the mounting bracket, thereby saving a lot of labor costs.

[0009] Preferably, a monitoring module is fixed to the front side of the mounting bracket, and two alarm lights are fixed to the bottom surface of the monitoring module. The alarm lights can increase the visibility of the equipment in a dim environment, enabling staff to quickly find the fault point, thereby saving staff time in the search.

[0010] Preferably, a mounting block is fixed to the rear side of the mounting frame, and fixing straps are fixed to both the left and right sides of the mounting block. A fixing frame is fixed to one end of the fixing strap on the left side. Two threaded holes are opened on the rear side of the fixing frame, and fixing bolts are threaded to the inner wall of the threaded holes. The fixing strap on the right side is fixed to the inner wall of the fixing frame by fixing bolts. The fixing bolts can fix the fixing straps when the mounting block is placed on the fixed object, so that the operator can adjust the length of the fixing straps in the fixing frame according to the size of the fixed object, thereby making the mounting block and the mounting frame stably fixed on the fixed object.

[0011] Preferably, a fixing groove is provided on the rear side of the mounting block, and an anti-slip pad is fixed on the inner wall of the fixing groove. The anti-slip pad can provide a certain buffer force when the mounting block is fixed, and prevent the mounting block and mounting frame from being damaged due to excessive fixing of the fixing strap 26.

[0012] Preferably, one end of the connecting wire is fixedly connected with a clamp, which allows the operator to easily connect the first surge arrester to the high-voltage line via the connecting wire, ensuring a stable connection between the connecting wire and the high-voltage line, thereby enabling the protection component to protect electrical equipment from damage.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] First, through the cooperation of the first and second metal pillars, the first electrode, and the second electrode, they can work together when the gap is broken down by lightning. This ensures that even if one gap breaks down for some reason, the other gap can still function, thereby dispersing overvoltage energy, reducing the burden on individual gaps, extending the service life of the components, and ultimately guiding the overvoltage energy to the ground, protecting the lines and related equipment from damage. Second, when the voltage on a high-voltage line exceeds its rated value, the resistance of the varistor drops sharply, allowing current to flow and quickly guiding the overvoltage to the ground. Thus, the varistor can effectively absorb and disperse transient overvoltage energy caused by lightning, protecting downstream electrical equipment from damage.

[0015] Second, the monitoring module allows for real-time monitoring of the protection components' operational status. Upon detecting any abnormalities, data can be promptly transmitted to the terminal to notify maintenance personnel for handling, thus enhancing the module's practicality. Anti-slip pads increase friction between the mounting block and the fixed object, preventing slippage of the mounting block and bracket, thereby improving the stability of the protection components. Attached Figure Description

[0016] Figure 1 A three-dimensional schematic diagram of the invention;

[0017] Figure 2 An explosion diagram for the invention;

[0018] Figure 3 for Figure 2 Exploded view of the central fixing frame and connecting ring;

[0019] Figure 4 for Figure 2 Exploded view of the sliding frame and connecting plate in the middle;

[0020] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 6 for Figure 2 Enlarged diagram of point B in the middle.

[0022] In the diagram: 1. Mounting bracket; 2. Sliding frame; 3. Connecting plate; 4. First surge arrester; 5. Connecting wire; 6. Second surge arrester; 7. Mounting groove; 8. First metal post; 9. Second metal post; 10. Fixing bracket; 11. First electrode; 12. Grounding bolt; 13. Ground wire; 14. Connecting ring; 15. Second electrode; 16. Connecting sleeve; 17. Insulating bracket; 18. Positioning hole; 19. Fixing hole; 20. Limiting post; 21. Spring; 22. Pull ring; 23. Monitoring module; 24. Alarm light; 25. Mounting block; 26. Fixing strap; 27. Fixing frame; 28. Threaded hole; 29. ​​Fixing bolt; 30. Fixing groove; 31. Anti-slip pad; 32. Clamp. Detailed Implementation

[0023] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] like Figures 1-6As shown, a linear rod double-gap surge protection overvoltage protection assembly includes a mounting frame 1. Two sliding frames 2 are slidably connected to the outer wall of the mounting frame 1. A connecting plate 3 is fixed to the front side of each sliding frame 2. A first surge arrester 4 is fixed to the top surface of the left connecting plate 3, and a connecting wire 5 is fixed to the top of the first surge arrester 4. A second surge arrester 6, which is a magnetic blow-out valve type, is provided at one end of the right connecting plate 3. Both the first surge arrester 4 and the second surge arrester 6 have mounting grooves 7 on their outer walls. A first metal post 8 is fixed to the inner wall of the mounting groove 7 on the first surge arrester 4, and a second metal post 8 is fixed to the inner wall of the mounting groove 7 on the second surge arrester 6. The inner wall of the mounting slot 7 is fixed with a second metal column 9, and a gap is formed between the first metal column 8 and the second metal column 9. The outer wall of the second surge arrester 6 is fixed with a fixing frame 10, and one side of the fixing frame 10 is fixed to one end of the connecting plate 3. The top of the second surge arrester 6 is fixed with a first electrode 11. The bottom ends of the first surge arrester 4 and the second surge arrester 6 are both fixed with grounding bolts 12. The bottom end of the grounding bolt 12 is fixed with a ground wire 13. The outer wall of the grounding bolt 12 is fixed with a connecting ring 14, and the outer wall of the connecting ring 14 is fixed with a second electrode 15, and a gap is formed between the second electrode 15 and the first electrode 11.

[0025] In use, the first metal post 8 and the second metal post 9, the first electrode 11 and the second electrode 15 cooperate with each other to ensure that when the gap is broken down by lightning, the other gap can still function even if one gap is broken down for some reason. This disperses the overvoltage energy, reduces the burden on individual gaps, extends the service life of the components, and guides the overvoltage energy to the ground, protecting the lines and related equipment from damage. Under overvoltage, when the gap breaks down, the lightning current forms a residual voltage through the second valve plate resistor of the second surge arrester 6. This voltage does not exceed the insulation level of the protected electrical equipment and enters the ground. The lightning voltage acts on the valve plate, breaking down the small air gaps between the diamond particles that make up the valve plate. This increases the contact area between the particles, reduces the resistance, and allows the lightning current to pass through easily. The voltage drop on the valve plate decreases, thus protecting the insulation of the protected electrical equipment from breakdown.

[0026] like Figures 1-6 As shown, a connecting sleeve 16 is fixed on the ground wire 13, and a varistor is provided on the inner wall of the connecting sleeve 16. The ground wire 13 is connected to the varistor, and an insulating bracket 17 is fixed on the outer wall of the connecting plate 3.

[0027] During operation, when the voltage on a high-voltage line exceeds its rated value, the resistance of the varistor drops sharply, allowing current to flow and quickly guiding the overvoltage to ground. Thus, the varistor effectively absorbs and disperses transient overvoltage energy caused by lightning, protecting downstream electrical equipment from damage. The insulating bracket 17 provides electrical insulation, preventing current from flowing on the connecting plate 3 and ensuring that current can only flow to the ground through the first surge arrester 4 or the second surge arrester 6 under the action of the ground wire 13, rather than through other possible paths, thereby protecting electrical equipment from overvoltage damage.

[0028] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, a number of positioning holes 18 are provided on one side of the mounting bracket 1, and a fixing hole 19 is provided on one side of the sliding frame 2. The fixing hole 19 corresponds to the positioning hole 18. A limit post 20 is slidably provided on the inner wall of the fixing hole 19. The limit post 20 is slidably provided with the positioning hole 18. A spring 21 is wound around the outer wall of the limit post 20. One end of the spring 21 is fixed to the inner wall of the fixing hole 19, and the other end of the spring 21 is fixed to the outer wall of the limit post 20. A pull ring 22 is fixed to one end of the limit post 20. A monitoring module 23 is fixed to the front side of the mounting bracket 1. Two alarm lights 24 are fixed to the bottom surface of the monitoring module 23.

[0029] During use, the pull ring 22 allows operators to easily pull the limiting post 20, enabling quick adjustment of the sliding frame 2's position and convenient movement along the outer wall of the mounting frame 1, thus saving significant labor costs. The monitoring module 23 provides real-time monitoring of the protection components' operational status. Upon detecting any abnormality, data is promptly transmitted to the terminal to notify maintenance personnel, enhancing the module's usability. Furthermore, the alarm light 24 increases the device's visibility in dimly lit environments, allowing operators to quickly locate faults and saving search time.

[0030] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, a mounting block 25 is fixed to the rear side of the mounting bracket 1. Fixing straps 26 are fixed to both the left and right sides of the mounting block 25. A fixing frame 27 is fixed to one end of the left fixing strap 26. Two threaded holes 28 are opened on the rear side of the fixing frame 27. Fixing bolts 29 are threaded to the inner wall of the threaded holes 28. The right fixing strap 26 is fixed to the inner wall of the fixing frame 27 by the fixing bolts 29. A fixing groove 30 is opened on the rear side of the mounting block 25. An anti-slip pad 31 is fixed to the inner wall of the fixing groove 30. A clamp 32 is fixedly connected to one end of the connecting wire 5.

[0031] During use, the fixing bolts 29 secure the fixing strap 26 when the mounting block 25 is placed on the fixed object. This allows the operator to adjust the length of the fixing strap 26 on the fixing frame 27 according to the size of the fixed object, thus ensuring the mounting block 25 and the mounting bracket 1 are stably fixed to the fixed object. The anti-slip pad 31 increases the friction between the mounting block 25 and the fixed object, preventing slippage of the mounting block 25 and the mounting bracket 1, thereby improving the stability of the protection component. Simultaneously, the anti-slip pad 31 provides a certain amount of cushioning force when fixing the mounting block 25, preventing over-fixing of the fixing strap 26 from damaging the mounting block 25 and the mounting bracket 1. The clamp 32 facilitates the connection of the first surge arrester 4 to the high-voltage line via the connecting wire 5, ensuring a stable connection between the connecting wire 5 and the high-voltage line, thereby protecting the electrical equipment from damage.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A linear rod double-gap lightning protection overvoltage protection assembly, comprising a mounting frame (1), characterized in that: The outer wall of the mounting frame (1) is slidably connected to two sliding frames (2), a connecting plate (3) is fixed to the front side of the sliding frame (2), a first lightning arrester (4) is fixed to the top surface of the left connecting plate (3), a connecting line (5) is fixed to the top of the first lightning arrester (4), a second lightning arrester (6) is arranged at one end of the right connecting plate (3), the second lightning arrester (6) is a magnetic blow-out valve type lightning arrester, the outer walls of the first lightning arrester (4) and the second lightning arrester (6) are both provided with mounting grooves (7), a first metal column (8) is fixed to the inner wall of the mounting groove (7) on the first lightning arrester (4), and a second metal column (9) is fixed to the inner wall of the mounting groove (7) on the second lightning arrester (6). 9), a gap is formed between the first metal column (8) and the second metal column (9), a fixing frame (10) is fixed to the outer wall of the second lightning arrester (6), one side of the fixing frame (10) is fixed to one end of the connecting plate (3), a first electrode (11) is fixed to the top of the second lightning arrester (6), a grounding bolt (12) is fixed to the bottom end of the first lightning arrester (4) and the second lightning arrester (6), a ground wire (13) is fixed to the bottom end of the grounding bolt (12), a connecting ring (14) is fixed to the outer wall of the grounding bolt (12), a second electrode (15) is fixed to the outer wall of the connecting ring (14), and a gap is formed between the second electrode (15) and the first electrode (11).

2. A linear rod double-gap lightning protection overvoltage protection assembly according to claim 1, characterized in that: A connecting sleeve (16) is fixed on the ground wire (13), a varistor is arranged on the inner wall of the connecting sleeve (16), and the ground wire (13) is connected to the varistor.

3. The linear rod double-gap lightning protection overvoltage protection assembly according to claim 1, characterized in that: An insulating bracket (17) is fixed to the outer wall of the connecting plate (3).

4. The linear rod double-gap lightning protection overvoltage protection assembly according to claim 3, characterized in that: A plurality of positioning holes (18) are provided on one side of the mounting frame (1), and a fixing hole (19) is provided on one side of the sliding frame (2). The fixing hole (19) corresponds to the positioning hole (18). A limiting column (20) is slidably provided on the inner wall of the fixing hole (19). The limiting column (20) is slidably provided with the positioning hole (18). A spring (21) is wound around the outer wall of the limiting column (20). One end of the spring (21) is fixed to the inner wall of the fixing hole (19), and the other end of the spring (21) is fixed to the outer wall of the limiting column (20). A pull ring (22) is fixed to one end of the limiting column (20).

5. The linear rod double-gap lightning protection overvoltage protection assembly according to claim 1, characterized in that: A monitoring module (23) is fixed to the front side of the mounting frame (1), and two warning lights (24) are fixed to the bottom surface of the monitoring module (23).

6. The linear rod double-gap lightning protection overvoltage protection assembly according to claim 5, characterized in that: A mounting block (25) is fixed on the rear side of the mounting frame (1), and fixing belts (26) are fixed on both the left and right sides of the mounting block (25). A fixing frame (27) is fixed on one end of the left fixing belt (26). Two threaded holes (28) are provided on the rear side of the fixing frame (27), and fixing bolts (29) are threadedly connected to the inner walls of the threaded holes (28). The fixing belt (26) on the right side is fixed to the inner wall of the fixing frame (27) by the fixing bolts (29).

7. A linear rod double-gap lightning protection overvoltage protection assembly according to claim 6, characterized in that: A fixing groove (30) is provided on the rear side of the mounting block (25), and an anti-slip pad (31) is fixed to the inner wall of the fixing groove (30).

8. The linear rod double-gap lightning protection overvoltage protection assembly according to claim 1, characterized in that: One end of the connecting line (5) is fixedly connected to a clamp (32).

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