Lightning arrester capable of being installed in live-line mode and having fixed gap

Abstract

The utility model discloses a fixed gap lightning arrester capable of being installed in an electrified mode, and belongs to the technical field of lightning arrester production. A fixed gap lightning arrester capable of being installed in an electrified mode comprises a lightning arrester body, a switching block, an upper clamping plate, a lower clamping plate and a wire clamp. The lightning arrester body is provided with an electrode, the switching block is fixedly installed at the bottom of the lightning arrester body and fixedly connected with the upper clamping plate, the end of the upper clamping plate is provided with a downward bending part, the bottom of the upper clamping plate is fixedly connected with a rotating shaft, the lower clamping plate is rotatably connected with the rotating shaft and can slide up and down along the rotating shaft, and the bottom of the rotating shaft is in threaded connection with a first nut. The bottom of the lower clamping plate is in threaded connection with a fixing screw; by arranging the wire clamp on the lightning arrester main body, the lightning arrester can be clamped on an electrode by using the wire clamp, so that the wire clamp is prevented from shaking in the installation process of the lightning arrester.

Description

Technical Field

[0001] This application relates to the technical field of arrester production, and more specifically, to a fixed-gap arrester that can be installed live. Background Art

[0002] Fixed-gap arresters mainly rely on the voltage-current characteristics of materials such as zinc oxide (ZnO). Under normal circumstances, ZnO is in a non-conductive state. When an overvoltage occurs in the power grid (such as a sudden voltage rise caused by lightning), the ZnO discharge electrode will quickly conduct, triggering current discharge, dispersing the overvoltage and guiding it to the ground to protect the equipment from damage.

[0003] After retrieving the patent document with the existing publication number CN106981346A, a fixed-gap arrester that can be installed live is provided. This device moves the discharge gap to the lower end of the product, and the arc generated during discharge will not damage the product, effectively ensuring the safe operation of the product.

[0004] However, the above device needs to place the overhead wire into the concave (wire) groove at the upper end of the line insulator, cover it with a pressure plate, and then tighten the bolts to fix the arrester. This installation method is difficult to perform live work, and power outages are required for both the installation and replacement of the arrester, which will bring inconvenience or losses to electricity customers. In view of this, we propose a fixed-gap arrester that can be installed live. Utility Model Content

[0005] 1. Technical Problems to be Solved

[0006] The purpose of this application is to provide a fixed-gap arrester that can be installed live to solve the problems raised in the above background art.

[0007] 2. Technical Solutions

[0008] This application is implemented through the following technical solutions:

[0009] A fixed-gap arrester that can be installed live, including an arrester main body, a transition block, an upper clamping plate, and a lower clamping plate;

[0010] The transition block is fixedly installed at the bottom of the arrester main body, the transition block is fixedly connected to the upper clamping plate, the end of the upper clamping plate is provided with a downward bending portion, the bottom of the upper clamping plate is fixedly connected with a rotating shaft, the lower clamping plate is rotatably connected to the rotating shaft, the lower clamping plate can slide up and down along the rotating shaft, a first nut is threadedly connected to the bottom of the rotating shaft, and a fixing screw is threadedly connected to the bottom of the lower clamping plate.

[0011] As an alternative solution to the technical solution of this application document, a limiting post is fixedly connected to the bottom of the upper clamping plate, an arc-shaped limiting groove is formed on the lower clamping plate, the limiting post is located in the arc-shaped limiting groove, and a second nut is threadedly connected to the lower part of the limiting post.

[0012] As an alternative solution to the technical solution of this application document, the central angle of the arc-shaped limiting groove is 90 degrees.

[0013] As an alternative solution to the technical solution of this application document, a plurality of weight-reducing holes are formed on the adapter block.

[0014] As an alternative solution to the technical solution of this application document, the adapter block and the upper clamping plate are integrally formed.

[0015] As an alternative solution to the technical solution of this application document, a connecting screw rod is fixedly connected to the lower part of the lightning arrester body, a hexagonal nut is threadedly connected to the outside of the connecting screw rod, the adapter block is threadedly connected to the connecting screw rod, a flat washer and a spring washer are provided between the hexagonal nut and the adapter block, and the flat washer and the spring washer are sleeved on the outside of the connecting screw rod.

[0016] As an alternative solution to the technical solution of this application document, it further includes a wire clamp. The wire clamp is electrically connected to the lightning arrester body through a wire. An electrode is provided on the lightning arrester body, and the wire clamp is clamped outside the electrode.

[0017] As an alternative solution to the technical solution of this application document, the wire clamp includes a wire clamp body. An adjusting screw rod is threadedly connected inside the wire clamp body, and an elastic cylindrical pin is fixedly connected to the end of the adjusting screw rod.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the beneficial effects of this application are as follows:

[0020] 1. By setting the upper clamping plate and the lower clamping plate to be relatively rotatable, the staff can use the rotating shaft at the bottom of the upper clamping plate and the first nut with the help of a live operating rod to place this device on the cross arm, and realize the clamping of the cross arm by the upper clamping plate and the lower clamping plate to fix this device. It can not only realize live working, but also improve the replacement efficiency of the lightning arrester and enhance the reliability of power grid operation.

[0021] 2. By setting a wire clamp on the lightning arrester body, the wire clamp can be clamped on the electrode to prevent the wire clamp from shaking during the installation of the lightning arrester, and the wire clamp can be installed on the overhead wire by using a live operating rod, which is convenient for the staff to install the lightning arrester. Brief description of the drawings

[0022] Figure 1It is a schematic diagram of the overall structure of a fixed-gap lightning arrester that can be installed live.

[0023] Figure 2 It is a bottom view of the overall structure of a fixed-gap lightning arrester that can be installed live.

[0024] Figure 3 It is a schematic diagram of the installation process of the overall structure of a fixed-gap lightning arrester that can be installed live.

[0025] Figure 4 It is an installation effect diagram of the overall structure of a fixed-gap lightning arrester that can be installed live.

[0026] Figure 5 It is a schematic diagram of the structure of the adapter block of a fixed-gap lightning arrester that can be installed live.

[0027] Figure 6 It is a schematic diagram of the wire structure of a fixed-gap lightning arrester that can be installed live.

[0028] In the figure: 1. Lightning arrester main body; 101. Electrode; 2. Adapter block; 201. Weight reduction hole; 3. Upper clamping plate; 301. Rotating shaft; 302. First nut; 303. Limit post; 304. Second nut; 4. Lower clamping plate; 401. Arc-shaped limit groove; 5. Fixed screw; 6. Wire clamp; 601. Wire clamp main body; 602. Adjusting screw; 603. Elastic cylindrical pin; 7. Cross arm; 8. Overhead conductor; 9. Live operating rod. Specific implementation manners

[0029] Next, the technical solutions of the present application will be clearly and completely described in conjunction with the accompanying drawings.

[0030] Please refer to Figure 1 And Figure 2 , the present application provides a technical solution:

[0031] A fixed-gap lightning arrester that can be installed live, including a lightning arrester main body 1, an adapter block 2, an upper clamping plate 3, a lower clamping plate 4 and a wire clamp 6;

[0032] The lightning arrester main body 1 is provided with an electrode 101. The adapter block 2 is fixedly installed at the bottom of the lightning arrester main body 1. The adapter block 2 is fixedly connected to the upper clamping plate 3. The end of the upper clamping plate 3 is provided with a downward bending part. The bottom of the upper clamping plate 3 is fixedly connected with a rotating shaft 301. The lower clamping plate 4 is rotatably connected to the rotating shaft 301. The lower clamping plate 4 can slide up and down along the rotating shaft 301. The bottom of the rotating shaft 301 is threadedly connected with a first nut 302. The bottom of the lower clamping plate 4 is threadedly connected with a fixed screw 5. The bottom of the upper clamping plate 3 is fixedly connected with a limit post 303. An arc-shaped limit groove 401 is opened on the lower clamping plate 4. The limit post 303 is located in the arc-shaped limit groove 401. The lower part of the limit post 303 is threadedly connected with a second nut 304. The central angle of the arc-shaped limit groove 401 is 90 degrees.

[0033] When installing this device, first clamp the wire clamp 6 on the electrode 101, and loosen the first nut 302 and the second nut 304 so that the lower clamping plate 4 can slide downward along the rotating shaft 301, increasing the gap between the upper clamping plate 3 and the lower clamping plate 4. Carry this device by the staff, move it to a safe position on the pole, rotate the lower clamping plate 4 so that the upper clamping plate 3 and the lower clamping plate 4 are arranged vertically, insert the live operation rod 9 onto the first nut 302, lift this device upward, and place the upper clamping plate 3 on the cross arm, as Figure 3 shown. Then, insert the live operation rod 9 into the fixing screw 5, and rotate the lower clamping plate 4 to the lower side of the upper clamping plate 3 and the cross arm through the fixing screw 5; then use the live operation rod 9 to tighten the first nut 302, the second nut 304 and the fixing screw 5 in sequence to fix this device, as Figure 4 shown; finally, connect the wire clamp 6 with the overhead wire 8.

[0034] As Figure 6 shown, the wire clamp 6 is electrically connected to the arrester main body 1 through a wire, and the wire clamp 6 is clamped outside the electrode 101; the wire clamp 6 includes a wire clamp main body 601, an adjusting screw 602 is connected to the wire clamp main body 601 by internal threads, and an elastic cylindrical pin 603 is fixedly connected to the end of the adjusting screw 602.

[0035] After the staff completes the fixing of the arrester main body 1, insert the live operation rod 9 into the end of the adjusting screw 602, and rotate the adjusting screw 602 by means of the limiting action of the elastic cylindrical pin 603 to remove the wire clamp 6 from the electrode 101, and use the live operation rod 9 to hang the wire clamp main body 601 on the overhead wire 8, and then tighten the adjusting screw 602 to complete the live installation of this device.

[0036] A connecting screw is fixedly connected to the lower part of the arrester main body 1, a hexagonal nut is connected to the outside of the connecting screw by threads, the adapter block 2 is connected to the connecting screw by threads, and a flat washer and a spring washer are arranged between the hexagonal nut and the adapter block 2, and the flat washer and the spring washer are sleeved on the outside of the connecting screw. When installing this device, a wrench can be used to clamp the hexagonal nut to tighten the adapter block 2, increasing the reliability of the connection between the adapter block 2 and the arrester main body 1.

[0037] In order to reduce the working intensity of the staff when using the live installation operation rod to lift the arrester, a number of weight-reducing holes 201 are opened on the adapter block 2, as Figure 5 shown; the adapter block 2 can be integrally formed with the upper clamping plate 3 to increase the assembly efficiency of this device.

Claims

1. A fixed-gap lightning arrester that can be installed while energized, characterized in that: It includes a lightning arrester body (1), an adapter block (2), an upper clamping plate (3) and a lower clamping plate (4); The adapter block (2) is fixedly installed at the bottom of the lightning arrester body (1). The adapter block (2) is fixedly connected to the upper clamping plate (3). The end of the upper clamping plate (3) is provided with a downward bending part. A rotating shaft (301) is fixedly connected to the bottom of the upper clamping plate (3). The lower clamping plate (4) is rotatably connected to the rotating shaft (301). The lower clamping plate (4) can slide up and down along the rotating shaft (301). A first nut (302) is threadedly connected to the bottom of the rotating shaft (301). A fixing screw (5) is threadedly connected to the bottom of the lower clamping plate (4).

2. The live-installable fixed-gap lightning arrester according to claim 1, wherein: A limiting post (303) is fixedly connected to the bottom of the upper clamping plate (3). An arc-shaped limiting groove (401) is formed in the lower clamping plate (4). The limiting post (303) is located in the arc-shaped limiting groove (401). A second nut (304) is threadedly connected to the lower part of the limiting post (303).

3. The fixed-gap lightning arrester capable of being installed while being energized according to claim 2, wherein: The central angle of the arc-shaped limiting groove (401) is 90 degrees.

4. The fixed-gap lightning arrester capable of being installed while energized according to claim 1, wherein: A plurality of weight-reducing holes (201) are formed in the adapter block (2).

5. A fixed-gap lightning arrester that can be installed while energized according to claim 1, characterized in that: The adapter block (2) and the upper clamping plate (3) are integrally formed.

6. The fixed-gap lightning arrester capable of being installed while energized according to claim 1, wherein: A connecting screw is fixedly connected to the lower part of the lightning arrester body (1). A hexagonal nut is threadedly connected to the outside of the connecting screw. The adapter block (2) is threadedly connected to the connecting screw. A flat washer and a spring washer are provided between the hexagonal nut and the adapter block (2). The flat washer and the spring washer are sleeved on the outside of the connecting screw.

7. The fixed-gap lightning arrester capable of being installed while energized according to claim 1, wherein: It further includes a wire clamp (6). The wire clamp (6) is electrically connected to the lightning arrester body (1) through a wire. An electrode (101) is provided on the lightning arrester body (1). The wire clamp (6) is clamped outside the electrode (101).

8. The fixed-gap lightning arrester capable of being installed while being energized according to claim 7, wherein: The wire clamp (6) includes a wire clamp body (601). An adjusting screw (602) is threadedly connected inside the wire clamp body (601). An elastic cylindrical pin (603) is fixedly connected to the end of the adjusting screw (602).

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