A lightning protection device for overhead insulated lines

Abstract

The utility model discloses an overhead insulated line lightning protection device belongs to power transmission line technical field, and the present application is through setting up the slidable sliding sleeve on overhead insulated cable, and utilizes the rolling contact of pulley and cable, and the friction resistance of device along cable moving has been reduced greatly. Different from the fixed structure of the existing lightning protection device, the device combines the design of traction assembly, and can cooperate with the ground traction device through the traction guide wire, realize the axial movement and position adjustment of the lightning protection device without disassembly. When it is necessary to change the arrangement angle or position of the lightning protection needle, the staff only needs to operate the traction device on the ground, which can drive the sliding sleeve to slide smoothly along the cable, thereby realizing the dynamic layout of the lightning rod, and significantly improving the lightning protection coverage range and maintenance convenience.

Description

Technical Field

[0001] This utility model relates to the field of power transmission line technology, specifically to a lightning protection device for overhead insulated lines. Background Technology

[0002] Open-air insulated lines are widely used in urban and rural power distribution systems, offering advantages such as high safety and convenient operation and maintenance. However, because these lines are laid in the air, they are easily exposed to lightning strikes and are frequently affected by lightning or induced overvoltages during the rainy season. When lightning surges propagate along the lines, they can easily cause conductor breakdown, insulation erosion, line tripping, and even equipment damage, potentially leading to widespread power outages or fires in severe cases.

[0003] CN222826965U discloses a lightning protection device for power transmission lines, including a lightning rod body, a mounting base, a fixing block, a fixing clip, a clip spring, a clip housing, and a conductor cable; the device is easy to disassemble, reducing the difficulty of inspection and maintenance, and facilitating the adjustment of the position and angle of the lightning protection device.

[0004] The aforementioned prior art has the following drawbacks: Although the lightning protection device reduces the difficulty of installation and maintenance through its detachable structure and allows adjustment of the position and angle of the lightning rod body before installation, once the structure is fixedly installed on the power transmission line, the fixing blocks and fixing clips are locked, and the overall position and angle of the device can no longer be adjusted. Therefore, the lightning protection device cannot be readjusted in terms of installation angle or position without disassembly. Utility Model Content

[0005] The purpose of this utility model is to provide a lightning protection device for overhead insulated lines, which solves the problem that existing lightning protection devices have a fixed structure that is locked after installation and cannot be readjusted without disassembly.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A lightning protection device for overhead insulated lines, comprising: A sliding sleeve is used to be slidably fitted onto an overhead insulated cable; the inner sidewall of the sliding sleeve is provided with several sliding grooves along the axial direction; The sliding assembly includes a plurality of pulleys arranged along the axis of the overhead insulated cable; the plurality of pulleys are respectively rotatably mounted in the sliding groove, and the wheel surface of each pulley forms rolling contact with the outer surface of the overhead insulated cable to reduce sliding friction resistance; A lightning rod, mounted on the sliding sleeve, is used to protect the overhead insulated cable from lightning strikes. A traction assembly includes a traction wire and a traction device; one end of the traction wire is fixed to the sliding sleeve; the traction device is positioned on the ground and fixed to the other end of the traction wire.

[0007] A further technical solution is that the sliding sleeve comprises two half-sleeves joined together.

[0008] A further technical solution is that the number of lightning rods is multiple, and they are evenly and detachably distributed along the periphery of the upper half-clamp.

[0009] A further technical solution is that the lower end of the traction device is provided with a soil-piercing cone for insertion into the ground.

[0010] A further technical solution includes a linkage assembly disposed between two adjacent overhead insulated cables; the linkage assembly includes a linkage member; the two ends of the linkage member are respectively connected to the sliding sleeves of the two adjacent overhead insulated cables.

[0011] A further technical solution is that the linkage component includes a linkage block, a linkage tube, an elastic telescopic component, and a linkage rod; the linkage block is respectively disposed on the opposite side of the sliding sleeve of two adjacent overhead insulated cables; the linkage tube is respectively disposed on the opposite side of the linkage block; the two ends of the linkage rod are respectively slidably disposed in the linkage tube through the elastic telescopic component.

[0012] A further technical solution is that the number of linkage components is multiple, and they are evenly distributed between the sliding sleeves of two adjacent overhead insulated cables.

[0013] Compared with the prior art, the beneficial effects of this utility model are: By installing a sliding sleeve on the overhead insulated cable and utilizing pulleys to form rolling contact with the cable, the frictional resistance when the device moves along the cable is significantly reduced. Unlike the fixed structure of existing lightning protection devices, this device is designed with a traction component, which can be used in conjunction with a ground traction device via a traction wire to achieve axial movement and position adjustment of the lightning protection device without disassembly. When it is necessary to change the arrangement angle or position of the lightning rod, the operator only needs to operate the traction device on the ground to drive the sliding sleeve to slide smoothly along the cable, thereby achieving dynamic deployment of the lightning rod and significantly improving the lightning protection coverage and maintenance convenience. Attached Figure Description

[0014] Figure 1 This is a three-dimensional drawing of the present invention.

[0015] Figure 2 This is a three-dimensional view of the sliding sleeve of this utility model.

[0016] Figure 3This is a three-dimensional view of the linkage component of this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] Example: like Figures 1-3 As shown, this utility model provides a lightning protection device for overhead insulated lines, including a sliding sleeve 1, a sliding assembly, a lightning rod 2, and a traction assembly. The sliding sleeve 1 is slidably fitted onto the overhead insulated cable 14. The inner sidewall of the sliding sleeve 1 has several grooves 3 along the axial direction. The sliding assembly includes multiple pulleys 4 arranged along the axis of the overhead insulated cable 14. The multiple pulleys 4 are rotatably installed in the grooves 3, and the wheel surface of each pulley 4 forms rolling contact with the outer surface of the overhead insulated cable 14 to reduce sliding friction resistance. The lightning rod 2 is installed on the sliding sleeve 1 to protect the overhead insulated cable 14 from lightning strikes. The traction assembly includes a traction wire 5 and a traction device 6. One end of the traction wire 5 is fixed to the sliding sleeve 1. The traction device 6 is installed on the ground and fixed to the other end of the traction wire 5. The traction device 6 is a grounding device, and its surface is coated with an insulating coating.

[0019] By installing a sliding sleeve 1 on the overhead insulated cable 14 and utilizing pulleys 4 to form rolling contact with the cable, the frictional resistance when the device moves along the cable is significantly reduced. Unlike the fixed structure of existing lightning protection devices, this device is designed with a traction component, which can cooperate with the ground traction device 6 via the traction wire 5 to achieve axial movement and position adjustment of the lightning protection device without disassembly. When it is necessary to change the arrangement angle or position of the lightning rod, the operator only needs to operate the traction device 6 on the ground to drive the sliding sleeve 1 to slide smoothly along the cable, thereby realizing the dynamic deployment of the lightning rod 2, significantly improving the lightning protection coverage and maintenance convenience.

[0020] In addition, the traction device 6 adopts a grounding structure and is coated with an insulating coating on its surface, which can simultaneously achieve lightning protection grounding and operational safety, ensuring the long-term stable operation of the entire machine.

[0021] In this embodiment, the sliding sleeve 1 includes two half sleeves 7 that are detachably spliced ​​together by bolts.

[0022] By designing the sliding sleeve 1 as two detachable and splicable half-sleeves 7 and using a bolt connection method, quick installation and disassembly can be achieved without interrupting the operation of the circuit.

[0023] In this embodiment, there are multiple lightning rods 2, which are evenly and detachably distributed along the periphery of the upper half-clamp 7; specifically, the upper half-clamp 7 has threaded holes 8 on its periphery; the lightning rods 2 are threaded into the threaded holes 8.

[0024] The uniform and detachable arrangement of multiple lightning rods 2 significantly expands the protection angle range of the device on high-voltage lines, enabling circumferential multi-directional lightning protection. The lightning rods 2 can be replaced as needed.

[0025] In this embodiment, the lower end of the traction device 6 is provided with a soil-piercing cone 9 for insertion into the ground.

[0026] When it is necessary to move the lightning protection device, simply pull the soil-piercing cone 9 at the lower end of the traction device 6 out of the ground, and manually pull the traction wire 5 to drive the sliding sleeve 1 to move smoothly along the overhead insulated cable 14, thereby repositioning the lightning protection device.

[0027] In this embodiment, a linkage assembly is also provided between two adjacent overhead insulated cables 14; the linkage assembly includes a linkage component 10; the two ends of the linkage component 10 are respectively connected to the sliding sleeves 1 of the two adjacent overhead insulated cables 14.

[0028] By setting up a linkage component between two adjacent overhead insulated cables 14, multiple lightning protection devices can achieve coordinated movement during operation.

[0029] In this embodiment, the linkage 10 includes a linkage block 11, a linkage tube 12, an elastic telescopic member, and a linkage rod 13; the linkage block 11 is respectively disposed on the opposite side of the sliding sleeve 1 of two adjacent overhead insulated cables 14; the linkage tube 12 is respectively disposed on the opposite side of the linkage block 11; the two ends of the linkage rod 13 are respectively slidably disposed in the linkage tube 12 through the elastic telescopic member; the elastic telescopic member is a spring damper.

[0030] When wind load or vibration causes displacement difference between adjacent devices, the elastic expansion joint can absorb the impact energy and prevent structural damage; at the same time, the linkage rod 13 maintains the relative distance between adjacent devices to ensure that the spatial layout of each lightning rod 2 is stable and consistent.

[0031] In this embodiment, there are multiple linkage components 10, which are evenly arranged between the sliding sleeves 1 of two adjacent overhead insulated cables 14.

[0032] Multiple linkage components 10 can achieve multi-point force balance, further improving the stability and synchronization of the overall structure.

[0033] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A lightning protection device for overhead insulated lines, characterized in that, include: A sliding sleeve is used to be slidably fitted onto an overhead insulated cable; the inner sidewall of the sliding sleeve is provided with several sliding grooves along the axial direction; The sliding assembly includes a plurality of pulleys arranged along the axis of the overhead insulated cable; the plurality of pulleys are respectively rotatably mounted in the sliding groove, and the wheel surface of each pulley forms rolling contact with the outer surface of the overhead insulated cable to reduce sliding friction resistance; A lightning rod, mounted on the sliding sleeve, is used to protect the overhead insulated cable from lightning strikes. A traction assembly includes a traction wire and a traction device; one end of the traction wire is fixed to the sliding sleeve; the traction device is positioned on the ground and fixed to the other end of the traction wire.

2. The overhead insulated line lightning protection device according to claim 1, characterized in that: The sliding sleeve comprises two half-sleeves joined together.

3. The overhead insulated line lightning protection device according to claim 2, characterized in that: The lightning rods are multiple in number and are evenly and detachably distributed along the periphery of the upper half-clamp.

4. The overhead insulated line lightning protection device according to claim 1, characterized in that: The lower end of the traction device is equipped with a soil-piercing cone for insertion into the ground.

5. A lightning protection device for overhead insulated lines according to claim 1, characterized in that: It also includes a linkage assembly disposed between two adjacent overhead insulated cables; the linkage assembly includes a linkage member; the two ends of the linkage member are respectively connected to the sliding sleeves of the two adjacent overhead insulated cables.

6. A lightning protection device for overhead insulated lines according to claim 5, characterized in that: The linkage component includes a linkage block, a linkage tube, an elastic telescopic component, and a linkage rod; the linkage block is respectively disposed on the opposite side of the sliding sleeve of two adjacent overhead insulated cables; the linkage tube is respectively disposed on the opposite side of the linkage block; the two ends of the linkage rod are respectively slidably disposed in the linkage tube through the elastic telescopic component.

7. A lightning protection device for overhead insulated lines according to claim 5, characterized in that: The number of linkage components is multiple, and they are evenly distributed between the sliding sleeves of two adjacent overhead insulated cables.

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