Lightning protection device for high-voltage lines

Abstract

This utility model provides a high-voltage line lightning protection device, belonging to the technical field of emergency voltage protection circuit devices. It includes a lightning arrester mechanism comprising a supporting flange, an installation assembly disposed on the outside of the supporting flange, and a metal oxide resistor fixedly installed on the top of the supporting flange; and a detection and protection mechanism comprising a housing fixedly installed at the bottom of the supporting flange and a primary water storage tank formed within the housing cavity. This utility model utilizes a built-in water absorption and color-changing linkage system to capture minute water seepage in real time, providing intuitive early warning through visual color changes. The transparent observation window of the housing, combined with drone inspection, enables remote visual assessment of the sealing status without disassembly. Its double-layer sealing design uses composite elastic materials, significantly improving resistance to environmental aging. This closed-loop system, from physical protection to intelligent monitoring, changes the traditional passive maintenance mode that requires power outages and tower climbing for inspection, effectively solving the problem of difficult detection of sealing interface deterioration in traditional devices.

Description

Technical Field

[0001] This utility model belongs to the technical field of emergency protection circuit devices for voltage, specifically relating to lightning protection devices for high-voltage lines. Background Technology

[0002] High-voltage line lightning protection devices are protective facilities designed to address insulation flashover, equipment damage, and power outages caused by lightning strikes on overhead transmission lines in power systems. These devices are typically based on lightning leader development theory, grounding discharge principle, or overvoltage limiting technology. They suppress the damage to line insulation caused by lightning strikes through physical mechanisms such as lightning interception, current shunting, and clamping.

[0003] Currently, during long-term operation, the bonding interface between the silicone rubber sheath and the metal flange of lightning protection devices gradually deteriorates due to environmental stresses such as ultraviolet radiation and humid heat, leading to decreased sealing performance. Moisture infiltration can cause the core rod to become brittle and break. Furthermore, routine inspections often fail to detect this, requiring specialized testing methods such as ultrasonic testing for accurate assessment. Adding to the challenge, testing frequently necessitates power outages and climbing the tower to dismantle the insulators, presenting maintenance with a dual challenge of efficiency and safety. Utility Model Content

[0004] The purpose of this utility model is to provide a lightning protection device for high-voltage lines, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: High-voltage line lightning protection devices include, The lightning protection mechanism includes a support flange, a mounting assembly disposed on the outside of the support flange, and a metal oxide resistor sheet fixedly mounted on the top of the support flange; The detection and protection mechanism includes a housing fixedly installed at the bottom of the support flange, a primary water storage tank opened in the inner cavity of the housing, a water absorption assembly disposed in the inner cavity of the primary water storage tank, a double-layer sealing strip fixedly installed at the top of the housing, a secondary triggering area disposed in the inner cavity of the housing, and a printed electrode humidity sensor fixedly installed in the inner cavity of the secondary triggering area.

[0006] As a preferred embodiment of this utility model, the detection and protection mechanism further includes a colorimetric sheet fixedly installed inside the housing cavity, a sealing sleeve fixedly installed outside the housing, and a transparent sheet fixedly installed outside the sealing sleeve.

[0007] As a preferred embodiment of the present invention, the water absorption assembly includes a support plate placed inside the primary water storage tank and a guide groove formed on the top of the support plate.

[0008] As a preferred embodiment of the present invention, the water-absorbing assembly further includes a bracket fixedly installed in the inner cavity of the guide groove, and a water-absorbing resin plate placed on top of the bracket.

[0009] As a preferred embodiment of the present invention, the mounting assembly includes a first adjusting groove plate fixedly mounted on the bottom of the housing, and a second adjusting groove plate movably mounted on the outside of the first adjusting groove plate.

[0010] As a preferred embodiment of the present invention, the mounting assembly further includes bolts threaded onto the outside of the second adjusting groove plate, and clamps fixedly mounted on the top of the second adjusting groove plate.

[0011] In a preferred embodiment of this utility model, the clamp is movably sleeved on the outside of the metal oxide resistor sheet, and one side of the color developing sheet is in contact with the outside of the water-absorbing resin board.

[0012] Compared with existing technologies, the advantages of this utility model are as follows: the built-in water absorption and color-changing linkage system can capture trace water seepage in real time and provide intuitive early warning through visual color change; the transparent observation window of the outer shell, combined with drone inspection, enables remote visual assessment of the sealing status without disassembly; its double-layer sealing design uses composite elastic materials, which significantly improves the resistance to environmental aging; the closed-loop system from physical protection to intelligent monitoring changes the traditional passive maintenance mode that requires power outages and tower climbing for inspection, and effectively solves the problem of difficult detection of deterioration of the sealing interface of traditional devices. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial cross-sectional view of the detection and protection mechanism structure of this utility model; Figure 3 This is a partial exploded view of the overall structure of the detection and protection mechanism of this utility model; Figure 4 This is a schematic diagram of the overall structure of this utility model from another perspective.

[0014] In the picture: 100. Lightning protection mechanism; 110. Support flange; 120. Mounting assembly; 121. First adjusting slot plate; 122. Second adjusting slot plate; 123. Bolt; 124. Clamp; 130. Metal oxide resistor element; 200. Detection and protection mechanism; 210. Housing; 220. Primary water storage tank; 230. Water absorption assembly; 231. Support plate; 232. Guide groove; 233. Bracket; 234. Water-absorbing resin board; 240. Double-layer sealing strip; 250. Secondary trigger area; 260. Printed electrode humidity sensor; 270. Color developing sheet; 280. Sealing sleeve; 290. Transparent sheet. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0018] Example Reference Figures 1-4 This is an embodiment of the present invention, which provides a high-voltage line lightning protection device, including, The lightning protection mechanism 100 includes a support flange 110, a mounting assembly 120 disposed on the outside of the support flange 110, and a metal oxide resistor 130 fixedly mounted on the top of the support flange 110. The detection and protection mechanism 200 includes a housing 210 fixedly installed at the bottom of the support flange 110, a primary water storage tank 220 formed in the inner cavity of the housing 210, a water absorption assembly 230 disposed in the inner cavity of the primary water storage tank 220, a double-layer sealing strip 240 fixedly installed at the top of the housing 210, a secondary triggering area 250 disposed in the inner cavity of the housing 210, and a printed electrode humidity sensor 260 fixedly installed in the inner cavity of the secondary triggering area 250.

[0019] Among them, the support flange 110, as the core load-bearing component, not only ensures the reliable fixation of the metal oxide resistor 130, but also provides a stable installation benchmark for the housing 210. The secondary sealing monitoring system composed of the primary water storage tank 220 and the water absorption component 230 can detect sealing failure through a dual mechanism of physical water absorption and electronic sensing without disassembling the device. The addition of the double-layer sealing strip 240 effectively isolates external environmental interference, making the detection data of the printed electrode humidity sensor 260 more reliable.

[0020] Specifically, the detection and protection mechanism 200 also includes a color developing sheet 270 fixedly installed inside the housing 210, a sealing sleeve 280 fixedly installed outside the housing 210, and a transparent sheet 290 fixedly installed outside the sealing sleeve 280.

[0021] Among them, the color-changing sheet 270 provides a preliminary judgment of leakage through visual color change reaction, forming a complementary verification mechanism with electronic sensing. The sealing sleeve 280 uses elastic material to cover the outer wall of the shell 210, which not only prevents mechanical damage but also maintains insulation performance. The light transmission characteristics of the transparent sheet 290 allow maintenance personnel to directly observe the internal color-changing status through drone inspection, which greatly reduces the frequency of tower climbing inspection.

[0022] Furthermore, the water absorption assembly 230 includes a support plate 231 placed inside the cavity of the primary water storage tank 220, and a guide groove 232 opened on the top of the support plate 231. The water absorption assembly 230 also includes a bracket 233 fixedly installed inside the cavity of the guide groove 232, and a water-absorbing resin plate 234 placed on the top of the bracket 233.

[0023] The carrier plate 231 adopts a split design for easy maintenance and replacement. Its top guide groove 232 forms a capillary channel to ensure that the seeping liquid is directed to the monitoring area, overcoming the defect of uneven local drying and wetting that is easy to produce by traditional planar water receiving plates. This increases the water contact area and significantly improves the capture efficiency of micro-leakage. The bracket 233 adopts a honeycomb support structure, which provides uniform support for the water-absorbing resin plate 234 while ensuring air permeability and avoiding material displacement due to vibration. The layered arrangement of the water-absorbing resin plate 234 forms a gradient water absorption barrier, which can quickly absorb sudden large amounts of seepage water and slowly release water to extend the sensor contact time, thus achieving dynamic balance monitoring.

[0024] Preferably, the mounting assembly 120 includes a first adjusting groove plate 121 fixedly mounted on the bottom of the housing 210, and a second adjusting groove plate 122 movably mounted on the outside of the first adjusting groove plate 121. The mounting assembly 120 also includes a bolt 123 threadedly mounted on the outside of the second adjusting groove plate 122, and a clamp 124 fixedly mounted on the top of the second adjusting groove plate 122.

[0025] The slide rail mechanism formed by the first adjusting groove plate 121 and the second adjusting groove plate 122 is adapted to the hardware interface of different tower types. The ring clamp structure of the clamp 124 fixes the metal oxide resistor sheet 130 through a multi-point stress distribution method, effectively preventing axial displacement caused by lightning strikes.

[0026] Furthermore, the clamp 124 is movably sleeved on the outside of the metal oxide resistor sheet 130, and one side of the color developing sheet 270 is in contact with the outside of the water-absorbing resin plate 234.

[0027] The dynamic fit design of the clamp 124 and the metal oxide resistor 130 ensures the reliability of the electrical connection and avoids the concentration of thermal expansion stress. The contact pressure sensing arrangement of the color developing sheet 270 and the water-absorbing resin plate 234 also blocks the influence of external electromagnetic interference on the humidity sensor 260 through physical contact.

[0028] It should be noted that the printed electrode humidity sensor 260, model number HS-2024P, adopts a ceramic substrate combined with platinum thin film electrode design, and the surface is covered with a nano-level porous alumina humidity-sensing layer. When the ambient humidity changes, the electrode impedance characteristics change regularly, and are converted into standard analog / digital signal output by the built-in microprocessor. The product adopts an IP67 protective shell and anti-fouling coating treatment, and exhibits excellent long-term stability and anti-interference ability in high-voltage power equipment applications. It is suitable for online monitoring systems of surge arrester sealing status.

[0029] During use, when a lightning surge enters the line, the metal oxide resistor 130 quickly dissipates the lightning current. Its operating status is transmitted in real time to the detection and protection mechanism 200 via the support flange 110. In daily operation, if the device seal fails, causing moisture to seep in, the moisture is first collected by the primary water storage tank 220 and then directed into the water-absorbing resin plate 234 via the guide channel 232, causing it to expand and triggering the color-changing indicator 270 to achieve a visual warning. Simultaneously, the seeping moisture contacts the printed electrode humidity sensor 260 in the secondary trigger area 250, generating an electrical signal change for electronic monitoring. Maintenance personnel can remotely observe the color-changing status through the transparent sheet 290 or directly read the sensor data to assess the device status. The adjustment function of the mounting component 120 can adapt to the mechanical deformation during line operation, and the dynamic fixing design of the clamp 124 ensures that the resistor remains stably connected during a lightning strike.

[0030] In summary, the support flange 110 serves as the core support structure, ensuring the stable installation of the metal oxide resistor 130 and providing a mechanical support benchmark for the entire device. The secondary sealing monitoring system consists of a primary water storage tank 220 and a water absorption component 230, which, in conjunction with a printed electrode humidity sensor 260, achieves a dual detection mechanism of physical water absorption and electronic sensing. The double-layer sealing strip 240 effectively isolates external interference, and the combination of the color developing sheet 270 and the transparent sheet 290 enables visual monitoring, significantly improving operation and maintenance efficiency. The adjustable mounting component 120 design allows the device to adapt to different installation environments, and the optimized structure of the clamp 124 ensures the reliability of electrical connections while effectively alleviating mechanical stress. The graded design of the water absorption component 230 significantly improves the sensitivity and reliability of leakage detection. Through the organic cooperation of various functional modules, significant improvements are achieved in lightning protection performance, environmental adaptability, condition monitoring accuracy, and maintenance convenience, making it suitable for the long-term stable operation requirements of high-voltage transmission lines.

[0031] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0032] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0033] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A lightning protection device for high voltage lines, characterized in that: include, The lightning protection mechanism (100) includes a support flange (110), a mounting assembly (120) disposed on the outside of the support flange (110), and a metal oxide resistor (130) fixedly mounted on the top of the support flange (110). The detection and protection mechanism (200) includes a housing (210) fixedly installed at the bottom of the support flange (110), a primary water storage tank (220) opened in the inner cavity of the housing (210), a water absorption assembly (230) disposed in the inner cavity of the primary water storage tank (220), a double-layer sealing strip (240) fixedly installed at the top of the housing (210), a secondary triggering area (250) disposed in the inner cavity of the housing (210), and a printed electrode humidity sensor (260) fixedly installed in the inner cavity of the secondary triggering area (250).

2. The lightning protection device for high voltage lines according to claim 1, characterized in that: The detection and protection mechanism (200) further includes a colorimetric sheet (270) fixedly installed in the inner cavity of the housing (210), a sealing sleeve (280) fixedly installed on the outer side of the housing (210), and a transparent sheet (290) fixedly installed on the outer side of the sealing sleeve (280).

3. The lightning protection device for high voltage lines according to claim 2, characterized in that: The water absorption assembly (230) includes a support plate (231) placed inside the cavity of the primary water storage tank (220) and a guide groove (232) formed on the top of the support plate (231).

4. The lightning protection device for high voltage lines according to claim 3, characterized in that: The water-absorbing assembly (230) also includes a bracket (233) fixedly installed in the inner cavity of the guide groove (232) and a water-absorbing resin plate (234) placed on top of the bracket (233).

5. The lightning protection device for high voltage lines according to claim 4, characterized in that: The mounting assembly (120) includes a first adjustment slot plate (121) fixedly mounted on the bottom of the housing (210) and a second adjustment slot plate (122) movably mounted on the outside of the first adjustment slot plate (121).

6. The lightning protection device for high voltage lines according to claim 5, characterized in that: The mounting assembly (120) also includes bolts (123) threaded onto the outside of the second adjusting slot plate (122) and clamps (124) fixedly mounted on the top of the second adjusting slot plate (122).

7. The lightning protection device for high voltage lines according to claim 6, characterized in that: The clamp (124) is movably sleeved on the outside of the metal oxide resistor (130), and one side of the color developing sheet (270) is in contact with the outside of the water-absorbing resin plate (234).

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