Arc extinguishing structure of high-voltage switch cabinet

Abstract

The utility model relates to the technical field of switch cabinet arc extinguishing, in particular to an arc extinguishing structure of a high-voltage switch cabinet, which comprises a high-voltage switch cabinet body, a switch box arranged in the high-voltage switch cabinet body, a sliding switch arranged in the switch box, an insulating ring sleeved on the sliding switch in a sliding manner, and transmission assemblies arranged on two sides of the insulating ring. The transmission assembly comprises a third sliding column capable of vertically sliding, the top of the third sliding column is slidably inserted into one end of a limiting plate, the other end of the limiting plate is fixedly connected with a vertical sliding plate, an inclined hole is formed in the surface of the vertical sliding plate, a sliding pin is slidably connected into the inclined hole, one end of the sliding pin is fixedly connected with one side of a transverse moving plate, and the other side of the transverse moving plate is slidably connected with a mounting plate. The bottom of the transverse moving plate is fixedly connected with an arc extinguishing grid sheet. The vertical sliding plate is controlled to move upwards, so that the sliding pin slides in the inclined hole, the sliding pin drives the transverse moving plate fixedly connected with the sliding pin to move in the middle on one side of the mounting plate, the distance between the arc extinguishing grid pieces is reduced, and electric arcs generated when the sliding switch is switched off can be effectively extinguished.

Description

Technical Field

[0001] This utility model relates to the field of arc extinguishing technology for switchgear, specifically to an arc extinguishing structure for a high-voltage switchgear. Background Technology

[0002] When the switching device inside the high-voltage switchgear is switched on or off, it will generate a certain amount of electric arc. If it cannot be extinguished in time and effectively, it may cause injury to personnel and pose a safety hazard. Therefore, during the use of high-voltage switchgear, it is necessary to use an arc extinguishing structure to extinguish the electric arc generated by the switch.

[0003] According to prior art, a Chinese patent with publication number CN103500675A discloses an arc extinguishing device suitable for switchgear. The arc extinguishing grid is fixed by a slot, which reduces the distance between the arc extinguishing grids and can increase the arc extinguishing energy. However, in order to reduce the distance between the arc extinguishing grids, the number of arc extinguishing grids needs to be increased, which in turn increases the cost of the arc extinguishing device. Utility Model Content

[0004] The purpose of this invention is to provide an arc-extinguishing structure for a high-voltage switchgear to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an arc-extinguishing structure for a high-voltage switchgear, comprising: a high-voltage switchgear cabinet, a switch box fixedly installed inside the high-voltage switchgear cabinet, a sliding switch provided inside the switch box, an insulating ring slidably sleeved on the sliding switch, and transmission components provided on both sides of the insulating ring, the transmission components including a vertically sliding third sliding column;

[0006] The top of the third sliding column is slidably inserted into one end of the limiting plate, and the other end of the limiting plate is fixedly connected to the vertical sliding plate. An oblique hole is opened on the surface of the vertical sliding plate, and a sliding pin is slidably connected in the oblique hole. One end of the sliding pin is fixedly connected to one side of the horizontal sliding plate, and the other side of the horizontal sliding plate is slidably connected to the mounting plate. An arc-extinguishing grid plate is fixedly connected to the bottom of the horizontal sliding plate.

[0007] Preferably, one side of the switch box is fixedly connected to the inner wall of the high-voltage switch cabinet, and the other side of the switch box is fixedly connected to one side of the mounting plate. A horizontal rail is fixedly connected to the other side surface of the mounting plate, and vertical rails are fixedly installed at both ends of the horizontal rail.

[0008] Preferably, the horizontal rail and the horizontal sliding plate are slidably connected, the horizontal sliding plate is arranged in a linear array on the surface of the mounting plate, the vertical rail and the vertical sliding plate are slidably connected, and two limiting plates are provided and symmetrically arranged on both sides of the top of the vertical sliding plate.

[0009] Preferably, a baffle is fixedly connected to the upper surface of the vertical slide plate, the baffle is fixedly connected to one end of the buffer, the other end of the buffer is fixedly connected to one end of the fixed column, and the other end of the fixed column is fixedly connected to the inner wall of the top of the switch box.

[0010] Preferably, a limit rod is fixedly connected to the inner wall of the bottom of the switch box, a hanging plate is provided on one side of the limit rod, one end of the hanging plate is fixedly connected to the inner wall of the switch box, limit blocks are provided on both sides of the top of the hanging plate, and a connecting plate is slidably sleeved on the limit rod.

[0011] Preferably, the limiting block is fixedly connected to the inner wall of the switch box by a support column, a first sliding post is slidably sleeved on one side of the limiting block, the other side of the limiting block is slidably connected to a third sliding post, and a second sliding post is slidably sleeved on the bottom of the limiting block.

[0012] Preferably, one end of the second sliding column is slidably connected to the bottom of the first sliding column via an inclined surface, the other end of the second sliding column is slidably connected to the bottom of the third sliding column via an inclined surface, one end of the connecting plate is fixedly connected to the top of the first sliding column, and the other end of the connecting plate is slidably connected to the limiting blocks fixedly connected to both sides of the insulating ring.

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

[0014] 1. An insulating ring is fitted onto the sliding head of the slide switch. By pulling the slide switch installed in the switch box downwards, the sliding head moves downwards with the insulating ring. Through the transmission component, the third sliding column moves upwards. Under the limit of the limit plate, the third sliding column pushes the limit plate upwards. The limit plate then drives the vertical sliding plate fixedly connected to it to move vertically upwards. The vertical sliding plate then slides through the oblique hole on its surface and connects with the sliding pin, causing the sliding pin to slide inside. The sliding pin then drives the horizontal sliding plate fixedly connected to it to slide on one side of the mounting plate, thereby causing several horizontal sliding plates to move in the center, reducing the distance between the arc-extinguishing grid plates, which can effectively extinguish the arc generated when the slide switch is opened.

[0015] 2. Under the reverse elastic force of the buffer, the connecting plate moves downward, and the connecting plate drives the vertical sliding plate to move downward synchronously, thereby indirectly increasing the distance between the arc-extinguishing grid plates. At the same time, the third sliding post is pushed downward under the limit plate. Then, through the inclined surface between the first, second, and third sliding posts, the first sliding post moves upward, thereby driving the connecting plate to slide upward under the limit rod, thus realizing the reset of the connecting plate and facilitating its next use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a side view of the overall structure of this utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the internal structure of this utility model.

[0020] In the diagram: 1. High-voltage switchgear cabinet; 2. Switch box; 3. Sliding switch; 4. Insulating ring; 5. Transmission assembly; 6. Third sliding column; 7. Limiting plate; 8. Vertical sliding plate; 9. Angled hole; 10. Sliding pin; 11. Horizontal sliding plate; 12. Mounting plate; 13. Arc extinguishing grid; 14. Horizontal rail; 15. Vertical rail; 16. Baffle; 17. Buffer; 18. Fixed column; 19. Limiting rod; 20. Hanging plate; 21. Limiting block; 22. Support column; 23. First sliding column; 24. Second sliding column; 25. Connecting plate; 26. Limiting plug. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Example 1: Please refer to Figures 1-4 This utility model provides a technical solution: an arc-extinguishing structure for a high-voltage switchgear, comprising: a high-voltage switchgear cabinet 1, a switch box 2 fixedly installed inside the high-voltage switchgear cabinet 1, a sliding switch 3 provided inside the switch box 2, an insulating ring 4 slidably sleeved on the sliding head of the sliding switch 3, and transmission components 5 provided on both sides of the insulating ring 4. The transmission components 5 facilitate the transmission of movement of the insulating ring 4. The transmission components 5 include a vertically slidable third sliding column 6, the top of the third sliding column 6 being slidably inserted into one end of a limiting plate 7, the other end of the limiting plate 7 being fixedly connected to a vertical sliding plate 8, an oblique hole 9 being opened on the surface of the vertical sliding plate 8, a sliding pin 10 being slidably connected inside the oblique hole 9, one end of the sliding pin 10 being fixedly connected to one side of a transverse sliding plate 11, the other side of the transverse sliding plate 11 being slidably connected to a mounting plate 12, and an arc-extinguishing grid plate 13 being fixedly connected to the bottom of the transverse sliding plate 11.

[0023] In this embodiment, the sliding switch 3 is a mechanical switch that controls the on / off state of the circuit through the linear movement of the slider. The user can open or close the circuit by sliding the slider from one position to another. When it is necessary to disconnect the control switch, the insulating ring 4 is fitted onto the sliding head of the sliding switch 3. By pulling the sliding switch 3 installed in the switch box 2 downward, the sliding head moves downward with the insulating ring 4. Through the transmission component 5, the third sliding column 6 moves upward. Under the limit of the limiting plate 7, the third sliding column 6 pushes the limiting plate 7 to move upward. The limiting plate 7 then drives the vertical sliding plate 8 fixedly connected to it to move vertically upward. The vertical sliding plate 8 then slides through the oblique hole 9 on its surface to connect with the sliding pin 10, so that the sliding pin 10 slides inside it. The sliding pin 10 then drives the horizontal sliding plate 11 fixedly connected to it to slide on one side of the mounting plate 12, thereby causing several horizontal sliding plates 11 to move in the center, reducing the distance between the arc extinguishing grid plates 13, which can effectively extinguish the arc generated when the sliding switch 3 is disconnected.

[0024] Example 2: Based on Example 1, one side of the switch box 2 is fixedly connected to the inner wall of the high-voltage switch cabinet 1, and the other side of the switch box 2 is fixedly connected to one side of the mounting plate 12. A horizontal rail 14 is fixedly connected to the other side surface of the mounting plate 12, and vertical rails 15 are fixedly installed at both ends of the horizontal rail 14. The switch box 2 is fixedly installed on the inner wall of the high-voltage switch cabinet 1. The horizontal rail 14 is slidably connected to the horizontal sliding plate 11. The horizontal sliding plate 11 is arranged in a linear array on the side surface of the mounting plate 12. The vertical rails 15 are slidably connected to the vertical sliding plate 8. Two limit plates 7 are provided and arranged symmetrically. On both sides of the top of the vertical slide plate 8, the horizontal rail 14 limits the horizontal sliding plate 11, and the vertical rail 15 limits the vertical slide plate 8. The limiting plate 7 has a groove on the side that abuts against the third sliding column 6, so as to better limit the third sliding column 6. A baffle 16 is fixedly connected to the upper surface of the vertical slide plate 8. The baffle 16 is fixedly connected to one end of the buffer 17, and the other end of the buffer 17 is fixedly connected to one end of the fixed column 18. The other end of the fixed column 18 is fixedly connected to the top inner wall of the switch box 2. The baffle 16 is set to facilitate abutment against the buffer 17, thereby facilitating the reset of the vertical slide plate 8.

[0025] When the control switch needs to be disconnected, the insulating ring 4 is fitted onto the sliding head of the sliding switch 3. By pulling the sliding switch 3 installed in the switch box 2 downward, its sliding head moves downward with the insulating ring 4. Through the transmission component 5, the third sliding column 6 moves upward. Under the limitation of the limiting plate 7, the third sliding column 6 pushes the limiting plate 7 to move upward. The limiting plate 7 then drives the vertical sliding plate 8, which is fixedly connected to it, to move vertically upward under the limitation of the vertical rail 15. The vertical sliding plate 8 then slides through the inclined hole 9 on its surface to connect with the sliding pin 10, allowing the sliding pin 10 to slide within it. The sliding pin 10 then drives the horizontal sliding plate 11, which is fixedly connected to it, to move on one side of the mounting plate 12. The horizontal rail 14 slides downwards to limit the movement. Since the inclined holes 9 are arranged at an angle and the bottom of the inclined holes 9 all point towards the direction of the sliding switch 3, several horizontal moving plates 11 can move in the center. The horizontal moving plates 11 then drive the arc-extinguishing grid plates 13 fixedly connected to their bottom to move synchronously, which reduces the distance between the arc-extinguishing grid plates 13 and can effectively extinguish the arc generated when the sliding switch 3 is opened, thus improving the arc extinguishing effect. While the vertical sliding plate 8 slides upwards, the connecting plate 25 fixedly connected to its top will push the buffer 17 upwards. Under the limit of the fixed column 18, the buffer 17 is compressed, thus generating a reverse elastic force, which facilitates the subsequent reset of the arc-extinguishing grid plates 13.

[0026] Example 3: Based on Example 2, a limit rod 19 is fixedly connected to the inner wall of the bottom of the switch box 2. A hanging plate 20 is provided on one side of the limit rod 19, and one end of the hanging plate 20 is fixedly connected to the inner wall of the switch box 2. Limit blocks 21 are provided on both sides of the top of the hanging plate 20, and the limit blocks 21 are symmetrically arranged. A connecting plate 25 is slidably sleeved on the limit rod 19. The hanging plate 20 is provided between the limit rods 19, and the hanging plate 20 is slidably connected to the insulating ring 4. When the sliding switch 3 is open, the insulating ring 4 is hung on the hanging plate 20. When it is necessary to disconnect the switch, the insulating ring 4 can be removed from the hanging plate 20 for use. The limit block 21 is fixedly connected to the inner wall of the switch box 2 through a support column 22. A first sliding column 23 is slidably sleeved on one side of the limit block 21, and the other side of the limit block 21 is slidably connected to a third sliding column 6. A second sliding column 24 is slidably sleeved at the bottom of the limit block 21. Horizontal and vertical through holes are opened in the limit block 21. This facilitates the sliding of the first sliding column 23, the second sliding column 24, and the third sliding column 6. The contact surfaces between the first sliding column 23, the second sliding column 24, and the third sliding column 6 are all inclined surfaces, thus achieving relative movement through the compression between the inclined surfaces. The support column 22 provides fixed support for the limiting block 21. One end of the second sliding column 24 is slidably connected to the bottom of the first sliding column 23 through an inclined surface, and the other end of the second sliding column 24 is slidably connected to the bottom of the third sliding column 6 through an inclined surface. One end of the connecting plate 25 is fixedly connected to the top of the first sliding column 23, and the other end of the connecting plate 25 is slidably connected to the limiting blocks 26 fixedly connected to both sides of the insulating ring 4. There are two connecting plates 25, which are symmetrically arranged about the central plane of the switch box 2. The limiting rod 19 improves the stability of the connecting plate 25 during movement. The limiting blocks 26 are symmetrically fixedly installed on both sides of the insulating ring 4, and the limiting blocks 26 facilitate the movement of the connecting plate 25 driven by the insulating ring 4.

[0027] Before disconnecting the sliding switch 3, remove the insulating ring 4 from the mounting plate 20 and place it on the sliding head of the sliding switch 3. Simultaneously, insert the limiting block 26 into the slot at one end of the connecting plate 25. When the sliding head of the sliding switch 3 is pulled downwards, the insulating ring 4, under the limiting action of the limiting block 26, causes the connecting plate 25 to move downwards synchronously. The other end of the connecting plate 25 then causes the first sliding column 23 to slide downwards within the limiting block 21. Simultaneously, the first sliding column 23 slides between its bottom inclined surface and the inclined surface at one end of the second sliding column 24, causing the second sliding column 24 to slide laterally away from the sliding switch 3 within the limiting block 21. The other end of the second sliding column 24 slides between its inclined surface and the inclined surface at the bottom of the third sliding column 6, causing the third sliding column 6 to slide upwards under the limiting block 21. This, in turn, pushes the limiting plate 7, causing the vertical sliding plate 8 to move upwards, facilitating subsequent adjustments. The distance between the arc-extinguishing grid plates 13 is adjusted. While the vertical slide plate 8 slides upward, the connecting plate 25 fixed at its top pushes the buffer 17 upward. Under the limit of the fixed column 18, the buffer 17 is compressed, thereby generating a reverse elastic force. After the sliding switch 3 is closed, the insulating ring 4 is removed from the slider of the sliding switch 3 and hung on the hanging plate 20. At the same time, under the action of the reverse elastic force of the buffer 17, the connecting plate 25 moves downward. The connecting plate 25 drives the vertical slide plate 8 to move downward synchronously, thereby indirectly increasing the distance between the arc-extinguishing grid plates 13. Meanwhile, the third sliding column 6 is pushed downward under the limit of the limiting plate 7. Then, through the inclined surface between the first sliding column 23, the second sliding column 24, and the third sliding column 6, the first sliding column 23 moves upward, thereby driving the connecting plate 25 to slide upward under the limit of the limiting rod 19, thereby realizing the reset of the connecting plate 25, which is convenient for the next use.

[0028] 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. An arc extinguishing structure of a high-voltage switchgear, comprising a high-voltage switchgear cabinet (1), characterized in that: The high-voltage switch cabinet body (1) is fixedly installed with a switch box (2), the switch box (2) is provided with a sliding switch (3), the sliding switch (3) is slidably sleeved with an insulating ring (4), the insulating ring (4) is provided with a transmission assembly (5) on both sides, the transmission assembly (5) includes a third slide column (6) which can vertically slide; The third slide column (6) is slidably inserted into one end of the limiting plate (7), the other end of the limiting plate (7) is fixedly connected with the vertical sliding plate (8), the surface of the vertical sliding plate (8) is provided with an inclined hole (9), the inclined hole (9) is slidably connected with a slide pin (10), one end of the slide pin (10) is fixedly connected with one side of the horizontal moving plate (11), the other side of the horizontal moving plate (11) is slidably connected with the mounting plate (12), the bottom of the horizontal moving plate (11) is fixedly connected with the arc extinguishing grid (13).

2. The arc extinguishing structure of a high-voltage switch cabinet according to claim 1, characterized in that: The switch box (2) is fixedly connected with the inner wall of the high-voltage switch cabinet body (1) on one side, and is fixedly connected with one side of the mounting plate (12) on the other side, and the surface of the other side of the mounting plate (12) is fixedly connected with the horizontal rail (14), and the two ends of the horizontal rail (14) are fixedly installed with the vertical rail (15).

3. The arc extinguishing structure of a high-voltage switchgear according to claim 2, characterized in that: The horizontal rail (14) is slidably connected between the horizontal moving plate (11), the horizontal moving plate (11) is linearly arranged on one side surface of the mounting plate (12), the vertical rail (15) is slidably connected between the vertical sliding plate (8), and the limiting plate (7) is provided with two and symmetrically arranged on both sides of the top of the vertical sliding plate (8).

4. The arc extinguishing structure of a high-voltage switchgear according to claim 3, characterized in that: The upper surface of the vertical sliding plate (8) is fixedly connected with the baffle (16), the baffle (16) is fixedly connected with one end of the buffer (17), the other end of the buffer (17) is fixedly connected with one end of the fixed column (18), and the other end of the fixed column (18) is fixedly connected with the top inner wall of the switch box (2).

5. The arc extinguishing structure of a high-voltage switchgear according to claim 4, characterized in that: The inner wall of the bottom of the switch box (2) is fixedly connected with the limiting rod (19), one side of the limiting rod (19) is provided with the hanging plate (20), one end of the hanging plate (20) is fixedly connected with the inner side wall of the switch box (2), limiting blocks (21) are arranged on both sides of the top of the hanging plate (20), and the limiting rod (19) is slidably sleeved with the connecting plate (25).

6. The arc extinguishing structure of a high-voltage switchgear according to claim 5, characterized in that: The limiting blocks (21) are fixedly connected between the inner side wall of the switch box (2) through the support (22), the first slide column (23) is slidably sleeved on one side of the limiting block (21), the other side of the limiting block (21) is slidably connected with the third slide column (6), and the second slide column (24) is slidably sleeved on the bottom of the limiting block (21).

7. The arc extinguishing structure of a high-voltage switchgear according to claim 6, characterized in that: One end of the second slide column (24) is slidably connected with the bottom of the first slide column (23) through an inclined surface, the other end of the second slide column (24) is slidably connected with the bottom of the third slide column (6) through an inclined surface, one end of the connecting plate (25) is fixedly connected with the top of the first slide column (23), and the other end of the connecting plate (25) is slidably connected with the limiting plug (26) fixedly connected on both sides of the insulating ring (4).

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