Lightning arrester with on-off function

Abstract

The utility model relates to the technical field of lightning arresters, and discloses a lightning arrester with an on-off function, which comprises a lightning arrester shell and a bottom plate, the lightning arrester shell is fixedly mounted on the outer wall of the top of the bottom plate, a lightning arrester conductive core is mounted on the inner side of the lightning arrester shell, an on-off guide rod is arranged on the inner side of the lightning arrester shell, and the bottom plate is fixedly mounted on the bottom plate. The top end of the on-off guide rod is electrically connected with the bottom end of the lightning arrester conductive core, an insulating sealing plate is fixedly arranged at the bottom end of the on-off guide rod, a limiting groove is formed in the outer wall of the middle of the bottom of the bottom plate, and the insulating sealing plate is arranged on the inner wall of the limiting groove in a sliding mode. According to the utility model, the insulating sealing plate is pulled down to drive the on-off guide rod to move downwards, and the on-off guide rod continuously moves downwards in the movable hole until the on-off guide rod completely moves to the outer side of the lightning arrester shell, so that the disconnection work of the conductive core of the lightning arrester and the on-off guide rod can be realized, the operation is convenient, the lightning arrester can be prevented from bearing overvoltage, and the service life of the lightning arrester is prolonged. The device is practical and suitable for being widely popularized and used.

Description

Technical Field

[0001] The utility model belongs to the technical field of lightning arresters, and in particular relates to a lightning arrester with a breaking function. Background Art

[0002] Gas-insulated metal-enclosed switchgear (GIS) is a metal-enclosed switchgear and control equipment that uses gas at a pressure higher than atmospheric pressure as the insulating medium in at least part of the device. GIS consists of circuit breakers, disconnectors, grounding switches, transformers, lightning arresters, busbars, connectors and outgoing line terminals. These devices or components are all enclosed in a metal grounded casing, which is filled with SF6 insulating gas at a certain pressure. Therefore, it is also called SF6 fully enclosed combination electrical appliances. When testing or overhauling the GIS, if the voltage applied by the GIS exceeds the voltage that the lightning arrester can withstand, the lightning arrester needs to be removed before testing or overhauling the GIS. Before removing the lightning arrester, the insulating gas in the lightning arrester and the adjacent GIS gas chamber needs to be recovered. After the test or overhaul is completed, the lightning arrester is reinstalled, and the lightning arrester and the adjacent GIS gas chamber are evacuated and filled with insulating gas. After that, the lightning arrester and the adjacent GIS gas chamber need to be sealed and leak-checked.

[0003] After searching CN218181972U, a lightning arrester with a breaking function is disclosed, including a lightning arrester shell, a conductive core, a breaking rod, a base plate and an insulating terminal; the top end of the conductive core is used to be electrically connected to an external circuit; the base plate is fitted on the bottom end of the lightning arrester shell, and a base plate through hole is provided on the base plate; the insulating terminal is connected to the base plate and is used to block the base plate through hole, a terminal through hole adapted to the breaking rod is provided in the insulating terminal, the terminal through hole is communicated with the base plate through hole, the breaking rod extends into the lightning arrester shell through the terminal through hole and the base plate through hole, the top end of the breaking rod is electrically connected to the bottom end of the conductive core, the bottom end of the breaking rod is provided with a rod head, the rod head is detachably connected to the bottom end of the insulating terminal, and can block the terminal through hole.

[0004] However, the inventors have discovered that the technical solution still has at least the following defects: in the above device, the disconnecting guide rod is connected to the insulating terminal by bolts or threads. When testing or repairing the GIS, it is necessary to use tools to remove the bolts to achieve the disassembly effect of the disconnecting guide rod and the insulating terminal. After that, the disconnecting guide rod is pulled outward to disconnect the disconnecting guide rod from the conductive core. Then, the GIS can be tested or repaired. This disassembly method of the disconnecting guide rod and the insulating terminal is relatively troublesome.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0007] A lightning arrester with a breaking function comprises a lightning arrester shell and a base plate, wherein the lightning arrester shell is fixedly mounted on the outer wall at the top of the base plate, a lightning arrester conductive core is mounted on the inner side of the lightning arrester shell, a breaking guide rod is arranged on the inner side of the lightning arrester shell, the top of the breaking guide rod is electrically connected to the bottom end of the lightning arrester conductive core, an insulating sealing plate is fixedly arranged on the bottom end of the breaking guide rod, a limiting groove is arranged on the outer wall at the middle part of the bottom of the base plate, the insulating sealing plate is slidably arranged on the inner wall of the limiting groove, symmetrically arranged movable grooves are arranged on both sides of the insulating sealing plate, the inner walls of the two movable grooves are both slidably connected with wedge-shaped clamping blocks, and the inner wall on the opposite side of the limiting groove is provided with symmetrically arranged clamping grooves, The two wedge-shaped blocks are respectively slidably arranged on the inner walls of the two slots, the inner walls of one side of the two movable slots are fixedly connected with compression springs, one end of the two compression springs are respectively fixedly connected to the outer wall of one side of the two wedge-shaped blocks, one side of the two slots is provided with sliding grooves, and the inner walls of the sliding grooves are slidably connected with extrusion blocks, one end of the two extrusion blocks are respectively in contact with the end positions of the two wedge-shaped blocks, one end of the two extrusion blocks is fixedly connected with a push-pull rod of an L-shaped structure, and the outer wall at the bottom of the bottom plate is provided with symmetrically arranged rectangular movable openings, the two rectangular movable openings are respectively communicated with the two sliding grooves, and the two push-pull rods are respectively slidably connected to the inner walls of the two rectangular movable openings.

[0008] As a preferred embodiment of the utility model, the bottom end of the arrester conductive core is connected to a shielding body, the top outer wall of the base plate is fixedly connected to an insulating support shell, and the shielding body is connected to the top of the insulating support shell.

[0009] As a preferred implementation mode of the utility model, the breaking guide rod is located inside the insulating support shell, and the top end of the breaking guide rod is connected to the shielding body.

[0010] As a preferred embodiment of the utility model, a pot-type insulator is installed on the top of the arrester housing, a conductor is arranged inside the pot-type insulator, and an explosion-proof device is installed on one side of the arrester housing.

[0011] As a preferred embodiment of the utility model, a conductive rod is provided at the top of the conductive core of the arrester, the top of the conductive rod is electrically connected to the conductor inside the pot-type insulator, and the conductor inside the pot-type insulator is electrically connected to the external circuit.

[0012] As a preferred embodiment of the utility model, a movable hole is opened in the middle of the bottom plate, the breaking guide rod is located inside the movable hole, and the movable hole is communicated with the limiting groove.

[0013] As a preferred embodiment of the utility model, a sensor is installed on the outer wall of one side of the bottom of the base plate, and the sensor includes an upper sensor and a lower sensor. The signal output end of the sensor is communicatively connected with the signal input end of the monitoring system.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model drives two push-pull rods to move relative to each other through the arranged rectangular movable opening, and the two push-pull rods drive two extrusion blocks to move relative to each other, so that the two extrusion blocks can drive two wedge-shaped clamping blocks to move relative to each other, until the two wedge-shaped clamping blocks are respectively located in the two movable grooves, so that the wedge-shaped clamping blocks and the clamping grooves are separated, and then the insulating sealing plate can be pulled down, so that the insulating sealing plate drives the breaking guide rod to move downward, and the breaking guide rod continues to move downward in the movable hole until the breaking guide rod is completely moved to the outside of the arrester housing, so that the arrester conductive core and the breaking guide rod can be disconnected, the operation is convenient, and the arrester can be prevented from being subjected to overvoltage.

[0016] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the attached picture:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0020] Figure 3 This is a partial cross-sectional structural diagram of the bottom plate of the utility model;

[0021] Figure 4 For this utility model Figure 3 Enlarged structural diagram at A in the middle.

[0022] In the figure: 1. Lightning arrester housing; 2. Bottom plate; 3. Basin insulator; 4. Explosion-proof device; 5. Lightning arrester conductive core; 6. Conductive rod; 7. Shielding body; 8. Sensor; 9. Breaking guide rod; 10. Insulating support housing; 11. Insulating sealing plate; 12. Limiting groove; 13. Movable hole; 14. Card slot; 15. Movable slot; 16. Wedge-shaped card block; 17. Compression spring; 18. Push-pull rod; 19. Slide groove; 20. Extrusion block; 21. Rectangular movable opening. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0024] like Figures 1 to 4 Shown

[0025] A lightning arrester with a breaking function comprises a lightning arrester housing 1 and a bottom plate 2, wherein the lightning arrester housing 1 is fixedly mounted on the top outer wall of the bottom plate 2, a lightning arrester conductive core 5 is mounted on the inner side of the lightning arrester housing 1, a breaking guide rod 9 is arranged on the inner side of the lightning arrester housing 1, the top of the breaking guide rod 9 is electrically connected to the bottom end of the lightning arrester conductive core 5, an insulating sealing plate 11 is fixedly arranged on the bottom end of the breaking guide rod 9, a limiting groove 12 is arranged on the outer wall of the middle part of the bottom of the bottom plate 2, the insulating sealing plate 11 is slidably arranged on the inner wall of the limiting groove 12, and the insulating sealing plate 11 Symmetrically arranged movable grooves 15 are opened on both sides, and the inner walls of the two movable grooves 15 are slidably connected with wedge-shaped blocks 16. A symmetrically arranged card groove 14 is opened on the inner wall of the opposite side of the limit groove 12, and the two wedge-shaped card blocks 16 are respectively slidably set on the inner walls of the two card grooves 14. The inner walls of one side of the two movable grooves 15 are fixedly connected with compression springs 17, and one end of the two compression springs 17 is respectively fixedly connected to the outer wall of one side of the two wedge-shaped card blocks 16. A slide groove 19 is opened on one side of the two card grooves 14, and the inner wall of the slide groove 19 is slidably connected with Extrusion blocks 20, one end of the two extrusion blocks 20 is in contact with the end positions of the two wedge-shaped blocks 16, one end of the two extrusion blocks 20 is fixedly connected with an L-shaped push-pull rod 18, the bottom outer wall of the bottom plate 2 is provided with a symmetrically arranged rectangular movable opening 21, the two rectangular movable openings 21 are respectively connected to the two slide grooves 19, the two push-pull rods 18 are respectively slidably connected to the inner walls of the two rectangular movable openings 21, and the two push-pull rods 18 are pushed to move relative to each other through the set rectangular movable openings 21, and the two push-pull rods 18 drive the two extrusion blocks 20 relative movement, so that the two extrusion blocks 20 can push the two wedge-shaped blocks 16 to move relative to each other, until the two wedge-shaped blocks 16 are respectively located in the two movable grooves 15, so as to achieve the separation between the wedge-shaped blocks 16 and the grooves 14, and then the insulating sealing plate 11 can be pulled down, so that the insulating sealing plate 11 drives the breaking guide rod 9 to move downward, and the breaking guide rod 9 continues to move downward in the movable hole 13 until the breaking guide rod 9 is completely moved to the outside of the arrester housing 1, so as to achieve the disconnection work between the arrester conductive core 5 and the breaking guide rod 9.

[0026] In a specific embodiment, the bottom end of the lightning arrester conductive core 5 is connected to a shielding body 7, the top outer wall of the base plate 2 is fixedly connected to an insulating support shell 10, the shielding body 7 is connected to the top of the insulating support shell 10, the breaking rod 9 is located on the inner side of the insulating support shell 10, and the top of the breaking rod 9 is connected to the shielding body 7. The insulating support shell 10 allows a preset insulation distance between the shielding body 7 and the base plate 2 to prevent the leakage current of the lightning arrester from being introduced into the ground through the base plate 2. In addition, when an overvoltage higher than the arrester can withstand is applied to both ends of the lightning arrester, the lightning arrester has sufficient insulation.

[0027] Furthermore, a pot-type insulator 3 is installed on the top of the arrester housing 1, a conductor is arranged inside the pot-type insulator 3, an explosion-proof device 4 is installed on one side of the arrester housing 1, a conductive rod 6 is arranged on the top of the arrester conductive core 5, the top of the conductive rod 6 is electrically connected to the conductor inside the pot-type insulator 3, the conductor inside the pot-type insulator 3 is electrically connected to the external circuit, a movable hole 13 is opened in the middle of the bottom plate 2, the breaking guide rod 9 is located inside the movable hole 13, the movable hole 13 is communicated with the limit groove 12, a sensor 8 is installed on the outer wall of one side of the bottom of the bottom plate 2, the sensor 8 includes an upper sensor and a lower sensor, the sensor 8 is used to detect the breaking guide rod 9, the sensor 8 The signal output end is communicatively connected with the signal input end of the monitoring system, and the breaking guide rod 9 is detected by the arranged sensor 8. The signal output end of the sensor 8 is communicatively connected with the signal input end of the monitoring system, and the sensor 8 comprises an upper sensor and a lower sensor. After the breaking guide rod 9 is inserted into the inner side of the arrester housing 1 and the insulating sealing plate 11 is fixedly connected with the bottom plate 2, the breaking guide rod 9 triggers the upper sensor, and the upper sensor sends a signal to the monitoring system, and the monitoring system outputs connection information. After the breaking guide rod 9 is pulled out from the arrester housing 1, the breaking guide rod 9 will trigger the lower sensor to send a signal to the monitoring system, and the monitoring system outputs disconnection information.

[0028] The implementation principle of a lightning arrester with a breaking function in this embodiment is as follows:

[0029] During specific use, the two push-pull rods 18 are pushed to move relative to each other through the rectangular movable opening 21, and the two push-pull rods 18 drive the two extrusion blocks 20 to move relative to each other, so that the two extrusion blocks 20 can push the two wedge-shaped blocks 16 to move relative to each other, until the two wedge-shaped blocks 16 are respectively located in the two movable grooves 15, so that the wedge-shaped blocks 16 are separated from the grooves 14, and then the insulating sealing plate 11 can be pulled down, so that the insulating sealing plate 11 drives the disconnecting guide rod 9 to move downward, and the disconnecting guide rod 9 continues to move downward in the movable hole 13 until the disconnecting guide rod 9 is completely moved to the outside of the arrester housing 1, so that the arrester conductive core 5 and the disconnecting guide rod 9 can be disconnected. The operation is convenient and can prevent the arrester from being subjected to overvoltage. The breaking guide rod 9 is then detected by the arranged sensor 8. The signal output end of the sensor 8 is communicatively connected with the signal input end of the monitoring system, and the sensor 8 comprises an upper sensor and a lower sensor. After the breaking guide rod 9 is inserted into the inner side of the arrester housing 1 and the insulating sealing plate 11 is fixedly connected with the bottom plate 2, the breaking guide rod 9 triggers the upper sensor, and the upper sensor sends a signal to the monitoring system, and the monitoring system outputs connection information. After the breaking guide rod 9 is pulled out of the arrester housing 1, the breaking guide rod 9 will trigger the lower sensor to send a signal to the monitoring system, and the monitoring system outputs disconnection information.

Claims

1. A lightning arrester with a breaking function, comprising a lightning arrester housing (1) and a bottom plate (2), characterized in that: The arrester housing (1) is fixedly mounted on the top outer wall of the base plate (2); an arrester conductive core (5) is mounted on the inner side of the arrester housing (1); a disconnecting guide rod (9) is arranged on the inner side of the arrester housing (1); the top end of the disconnecting guide rod (9) is electrically connected to the bottom end of the arrester conductive core (5); an insulating sealing plate (11) is fixedly mounted on the bottom end of the disconnecting guide rod (9); a limiting groove (12) is arranged on the outer wall of the middle part of the bottom of the base plate (2); the insulating sealing plate (11) is slidably mounted on the inner wall of the limiting groove (12); symmetrically arranged movable grooves (15) are arranged on both sides of the insulating sealing plate (11); the inner walls of the two movable grooves (15) are both slidably connected with wedge-shaped clamping blocks (16); the inner wall of the opposite side of the limiting groove (12) is provided with symmetrically arranged clamping grooves (14); the two wedge-shaped clamping blocks (16) are respectively slidably mounted on the inner wall of the limiting groove (12); The two movable grooves (15) are arranged on the inner walls of the two card slots (14). The inner walls of one side of the two movable grooves (15) are fixedly connected with compression springs (17). One end of the two compression springs (17) is respectively fixedly connected to the outer wall of one side of the two wedge-shaped card blocks (16). One side of the two card slots (14) is provided with a slide groove (19), and the inner wall of the slide groove (19) is slidably connected with an extrusion block (20). One end of the two extrusion blocks (20) is respectively in contact with the end position of the two wedge-shaped card blocks (16). One end of the two extrusion blocks (20) is fixedly connected with a push-pull rod (18) of an L-shaped structure. The outer wall of the bottom of the bottom plate (2) is provided with a symmetrically arranged rectangular movable opening (21). The two rectangular movable openings (21) are respectively communicated with the two slide grooves (19). The two push-pull rods (18) are respectively slidably connected to the inner walls of the two rectangular movable openings (21).

2. The lightning arrester with breaking function according to claim 1, characterized in that: The bottom end of the arrester conductive core (5) is connected to a shielding body (7), the top outer wall of the base plate (2) is fixedly connected to an insulating support shell (10), and the shielding body (7) is connected to the top of the insulating support shell (10).

3. The arrester with breaking function according to claim 2, characterized in that: The breaking guide rod (9) is located inside the insulating support shell (10), and the top end of the breaking guide rod (9) is connected to the shielding body (7).

4. The arrester with breaking function according to claim 1, characterized in that: A pot-type insulator (3) is installed on the top of the arrester housing (1), a conductor is arranged inside the pot-type insulator (3), and an explosion-proof device (4) is installed on one side of the arrester housing (1).

5. The arrester with breaking function according to claim 4, characterized in that: A conductive rod (6) is provided at the top end of the arrester conductive core (5); the top end of the conductive rod (6) is electrically connected to the conductor inside the pot-type insulator (3); and the conductor inside the pot-type insulator (3) is electrically connected to an external circuit.

6. The arrester with breaking function according to claim 1, characterized in that: A movable hole (13) is provided in the middle of the bottom plate (2), the breaking guide rod (9) is located inside the movable hole (13), and the movable hole (13) is communicated with the limiting groove (12).

7. The arrester with breaking function according to claim 1, characterized in that: A sensor (8) is installed on the outer wall of one side of the bottom of the base plate (2), the sensor (8) comprising an upper sensor and a lower sensor, and a signal output end of the sensor (8) is communicatively connected to a signal input end of a monitoring system.

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