Shielding device for shielding lightning protection of overhead transmission line

Abstract

The utility model belongs to the field of power system protection, particularly relates to a shielding lightning protection shielding device for an overhead power transmission line, and aims to solve the problems that the conventional shielding device is laborious to operate during later maintenance and replacement, is not good enough in stability during use and is inconvenient to use, and adopts the following scheme that the shielding device comprises an overhead connecting frame and a controller, a plurality of supporting frames are fixedly mounted on the overhead connecting frame; two auxiliary frames are symmetrically and fixedly mounted at the top of the overhead connecting frame, and line holes are formed in the two auxiliary frames and the overhead connecting frame; a side plate is fixedly installed on one side of the overhead connecting frame, a placing rod is fixedly installed on the side plate, a supporting device is fixedly installed on the side plate, a blocking device is installed on the placing rod in a sliding mode, and a vertical plate is fixedly installed on the overhead connecting frame. And the use is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of power system protection, in particular to a shielding device for preventing winding and lightning strikes on overhead power transmission lines. Background Art

[0002] Overhead transmission lines are long and have many points, and the terrain they pass through is complex and changeable. Lightning strikes are one of the main accidents. Operation experience, field measurements, simulation tests, and related literature have shown that line tripping caused by lightning strikes accounts for a considerable proportion, posing a serious threat to the safe and stable operation of the power system. Therefore, a shielding device for overhead transmission lines to prevent lightning strikes is needed.

[0003] Existing shielding devices:

[0004] The patent document with application number 200820134268.4 provides a shielding device for preventing overhead power transmission lines from being struck by lightning. The device is arranged between a pole tower and a lightning conductor thereon, and includes a shielding wire, a pole tower cross arm connecting hardware, and an overhead lightning conductor fixing hardware. There are four shielding wires, and the device includes a shielding wire, a pole tower cross arm connecting hardware, and an overhead lightning conductor fixing hardware. There are four shielding wires, and two shielding wires form a group. One end of each group of shielding wires is connected to the lightning conductor through respective overhead lightning conductor fixing hardware, and the other end is connected to the pole tower through a common pole tower cross arm connecting hardware. The utility model has a simple structure and is easy to install. Through the shielding effect of the shielding wire, the captured lightning current is discharged into the earth through the shielding wire and the pole tower, so that the conductor is effectively protected.

[0005] It can be seen that the existing shielding device is suspended by connecting and fixing the shielding wire during use, and the connection and fixing parts are mostly fixed by welding or screws, which makes the operation laborious when it is needed for maintenance and replacement later, and the stability is not good enough during use, making it inconvenient to use. Utility Model Content

[0006] The utility model aims to solve the shortcomings of the existing shielding device, such as laborious operation during later maintenance and replacement, insufficient stability during use, and inconvenient use, and proposes a shielding device for preventing winding and lightning strikes on overhead power transmission lines.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A shielding device for preventing winding and lightning strike of an overhead power transmission line comprises an overhead connecting frame and a controller, wherein a plurality of supporting frames are fixedly mounted on the overhead connecting frame;

[0009] Two auxiliary frames are symmetrically fixedly installed on the top of the overhead connecting frame, and line holes are opened on the two auxiliary frames and the overhead connecting frame;

[0010] A side plate is fixedly installed on one side of the overhead connecting frame, a placing rod is fixedly installed on the side plate, a supporting device is fixedly installed on the side plate, a blocking device is slidably installed on the placing rod, a vertical plate is fixedly installed on the overhead connecting frame, a fixing device is slidably installed on the vertical plate, an adjusting device is rotatably installed on the overhead connecting frame, a fixing plate is fixedly installed on the top of the controller, and a placing cylinder is fixedly installed on the top of the fixing plate.

[0011] Preferably, the supporting device comprises two supporting rods, and the two supporting rods are symmetrically fixedly mounted on the side plate.

[0012] Preferably, the blocking device comprises an inclined plate and an auxiliary support plate, the inclined plate is slidably mounted on the placement rod, and the auxiliary support plate is fixedly mounted on the inclined plate.

[0013] Preferably, a slide groove is provided on the placement rod, a slider is slidably installed in the slide groove, the inclined plate is fixedly installed on the slider, a compression spring is fixedly installed in the slide groove, and the compression spring is fixedly connected to the slider.

[0014] Preferably, the fixing device comprises a slide plate, a mounting plate and a mounting hole, the slide plate is slidably mounted on the vertical plate, the mounting plate is fixedly mounted on the slide plate, and the mounting hole is opened on the mounting plate.

[0015] Preferably, the adjusting device comprises a screw rod and a knob, the screw rod is rotatably mounted on the overhead connecting frame, the knob is fixedly mounted on the screw rod, and the screw rod is threadably connected to the slide plate.

[0016] In the utility model, the shielding device for preventing winding and lightning strike of overhead power transmission lines has the following beneficial effects:

[0017] In this scheme, an overhead connection frame, a controller, a support frame, an auxiliary frame, a line hole, a side plate, a placement rod, a support rod, a slide groove, a slider, a compression spring, an inclined plate, a support plate, a fixing plate, and a placement tube are provided. The controller is placed on the placement rod through the placement tube. After placement, the inclined plate and the auxiliary support plate are reset to support the placement tube, so that the placement tube can be initially fixed with auxiliary assistance, and the operation is convenient.

[0018] Since the present solution is provided with a vertical plate, a slide plate, a mounting plate, mounting holes, screws and knobs, after preliminary fixation, further final fixation can be achieved through the mounting holes on the mounting plate, and the mounting plate can be driven to move by the screws, so that the position of the mounting plate can be adjusted as needed.

[0019] The utility model saves labor in fixing and disassembling during maintenance and replacement, is more convenient to use, and is more stable when used. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1A schematic diagram of the structure of a shielding device for preventing winding and lightning strikes on overhead power transmission lines proposed by the utility model;

[0021] Figure 2 A shielding device for preventing winding and lightning strike of overhead power transmission lines proposed by the utility model Figure 1 A schematic diagram of the enlarged structure of part A;

[0022] Figure 3 The utility model provides a schematic diagram of the three-dimensional structure of an inclined plate and an auxiliary support plate of a shielding device for preventing winding and lightning strikes on overhead power transmission lines.

[0023] In the figure: 1. Overhead connecting frame; 2. Controller; 3. Support frame; 4. Auxiliary frame; 5. Line hole; 6. Side panel; 7. Placement rod; 8. Support rod; 9. Slide groove; 10. Slider; 11. Compression spring; 12. Inclined plate; 13. Support plate; 14. Fixed plate; 15. Placement cylinder; 16. Vertical plate; 17. Slide plate; 18. Mounting plate; 19. Mounting hole; 20. Screw; 21. Knob. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Embodiment 1

[0025] Reference Figure 1-Figure 3 , a shielding device for preventing winding and lightning strike of an overhead power transmission line, comprising an overhead connecting frame 1 and a controller 2, wherein a plurality of supporting frames 3 are fixedly mounted on the overhead connecting frame 1;

[0026] Two auxiliary frames 4 are symmetrically fixedly installed on the top of the overhead connecting frame 1, and line holes 5 are opened on the two auxiliary frames 4 and the overhead connecting frame 1;

[0027] A side plate 6 is fixedly installed on one side of the overhead connecting frame 1, a placing rod 7 is fixedly installed on the side plate 6, a supporting device is fixedly installed on the side plate 6, a blocking device is slidably installed on the placing rod 7, a vertical plate 16 is fixedly installed on the overhead connecting frame 1, a fixing device is slidably installed on the vertical plate 16, an adjusting device is rotatably installed on the overhead connecting frame 1, a fixing plate 14 is fixedly installed on the top of the controller 2, and a placing cylinder 15 is fixedly installed on the top of the fixing plate 14.

[0028] In the present invention, the supporting device includes two supporting rods 8 , which are symmetrically fixedly mounted on the side plate 6 and can provide auxiliary support for the placement tube 15 .

[0029] In the utility model, the blocking device includes an inclined plate 12 and an auxiliary support plate 13. The inclined plate 12 is slidably mounted on the placement rod 7, and the auxiliary support plate 13 is fixedly mounted on the inclined plate 12, which can play a blocking role when the placement tube 15 is placed on the placement rod 7.

[0030] In the utility model, a slide groove 9 is provided on the placement rod 7, a slider 10 is slidably installed in the slide groove 9, an inclined plate 12 is fixedly installed on the slider 10, a compression spring 11 is fixedly installed in the slide groove 9, and the compression spring 11 is fixedly connected to the slider 10, thereby ensuring the stable movement of the inclined plate 12 and enabling it to be reset when there is no thrust.

[0031] In the utility model, the fixing device includes a slide plate 17, a mounting plate 18 and a mounting hole 19. The slide plate 17 is slidably mounted on the vertical plate 16, the mounting plate 18 is fixedly mounted on the slide plate 17, and the mounting hole 19 is opened on the mounting plate 18, and the controller 2 can be finally fixed through the mounting hole 19.

[0032] In the utility model, the adjusting device includes a screw rod 20 and a knob 21. The screw rod 20 is rotatably mounted on the overhead connecting frame 1, and the knob 21 is fixedly mounted on the screw rod 20. The screw rod 20 is threadedly connected to the slide plate 17, and the position of the mounting plate 18 can be adjusted as needed.

[0033] In the utility model, when the device is used, the overhead connecting frame 1 is fixedly installed on the line tower. During maintenance, the worker inserts the placement tube 15 on the controller 2 into the placement rod 7. When placing, the inclined plate 12 will be squeezed to move until the placement tube 15 is completely placed. The inclined plate 12 is reset under the elastic force of the compression spring 11, so that the placement tube 15 can be supported and fixed by the support plate 13 and the two support rods 8. After fixing, the screw rod 20 is rotated as needed, and the screw rod 20 drives the slide plate 17 to move, so that the mounting plate 18 can be adjusted to a suitable position for final fixed installation. Embodiment 2

[0034] The difference between this embodiment and the first embodiment is that a line device and a lightning rod and other devices are fixedly installed in the controller 2, and they are used for lightning protection by cooperating with the lightning protection wire and the shielding wire on the overhead connecting frame 1.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A shielding device for preventing winding lightning of an overhead power transmission line, comprising an overhead connecting frame (1) and a controller (2), characterized in that: A plurality of support frames (3) are fixedly mounted on the overhead connecting frame (1); Two auxiliary frames (4) are symmetrically fixedly mounted on the top of the overhead connecting frame (1), and line holes (5) are provided on the two auxiliary frames (4) and the overhead connecting frame (1); A side plate (6) is fixedly mounted on one side of the overhead connecting frame (1), a placement rod (7) is fixedly mounted on the side plate (6), a supporting device is fixedly mounted on the side plate (6), a blocking device is slidably mounted on the placement rod (7), a vertical plate (16) is fixedly mounted on the overhead connecting frame (1), a fixing device is slidably mounted on the vertical plate (16), an adjusting device is rotatably mounted on the overhead connecting frame (1), a fixing plate (14) is fixedly mounted on the top of the controller (2), and a placement cylinder (15) is fixedly mounted on the top of the fixing plate (14).

2. The shielding device for preventing winding lightning of overhead power transmission lines according to claim 1, characterized in that: The support device comprises two support rods (8), and the two support rods (8) are symmetrically fixedly mounted on the side plate (6).

3. The shielding device for preventing winding lightning of overhead power transmission lines according to claim 1, characterized in that: The blocking device comprises an inclined plate (12) and an auxiliary support plate (13); the inclined plate (12) is slidably mounted on the placement rod (7), and the auxiliary support plate (13) is fixedly mounted on the inclined plate (12).

4. The shielding device for preventing winding lightning of overhead power transmission lines according to claim 3, characterized in that: The placement rod (7) is provided with a slide groove (9), a slider (10) is slidably mounted in the slide groove (9), and the inclined plate (12) is fixedly mounted on the slider (10).

5. The shielding device for preventing winding lightning of overhead power transmission lines according to claim 4, characterized in that: A compression spring (11) is fixedly installed in the slide groove (9), and the compression spring (11) is fixedly connected to the slide block (10).

6. The shielding device for preventing winding lightning of overhead power transmission lines according to claim 1, characterized in that: The fixing device comprises a slide plate (17), a mounting plate (18) and a mounting hole (19); the slide plate (17) is slidably mounted on the vertical plate (16); the mounting plate (18) is fixedly mounted on the slide plate (17); and the mounting hole (19) is formed on the mounting plate (18).

7. The shielding device for preventing winding lightning of overhead power transmission lines according to claim 6, characterized in that: The adjusting device comprises a screw rod (20) and a knob (21); the screw rod (20) is rotatably mounted on the overhead connecting frame (1); the knob (21) is fixedly mounted on the screw rod (20); and the screw rod (20) is threadably connected to the slide plate (17).

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