A lightning protection device for a temporary weather station

Abstract

The utility model relates to a lightning protection device for temporary meteorological station, relates to meteorological station lightning protection technical field, aims at solving the problem of existing temporary meteorological station lightning protection device cumbersome, poor electric connection stability, the device includes the lightning arrester, down conductor, ground body and two non -metallic connection fixed frame, non -metallic connection fixed frame connects the lightning arrester and down conductor respectively, down conductor and ground body, and non -metallic connection fixed frame is equipped with flexible metal disposable conductive layer, and the corresponding position of lightning arrester and ground body is equipped with annular conductive contact point, and down conductor both ends are equipped with flexible conductive bump. The utility model discloses through optimizing each component structure and connection mode, realizes single person fast loading and unloading, and improves electric connection effect with the help of flexible metal disposable conductive structure, ensures lightning protection reliability, is applicable to temporary meteorological station short -term or mobile monitoring scene.

Description

Technical Field

[0001] This application relates to the field of lightning protection technology for meteorological stations, and in particular to a lightning protection device for temporary meteorological stations that is easy to load and unload. Background Technology

[0002] Temporary weather stations are often used for short-term weather monitoring, disaster emergency monitoring, and other scenarios. Their installation locations are flexible and they need to be moved frequently.

[0003] Currently, the lightning protection devices for temporary weather stations mostly follow the design of fixed weather stations, which has the following problems: First, the installation and removal process is complex, requiring specialized tools and multiple people to complete, which is time-consuming and difficult to meet the needs of rapid deployment and evacuation of temporary weather stations; Second, the electrical connection structure is poorly designed, with simple threaded or snap-fit ​​connections between the lightning trigger, down conductor, and grounding electrode, resulting in small contact area, high contact resistance, and poor conductivity during lightning strikes, affecting the lightning protection effect; Third, some devices use metal connecting frames, which can ensure conductivity, but the heavy weight of the metal connecting frames increases the difficulty of installation and removal, and can easily generate local high voltage due to lightning induction, posing a safety hazard. Utility Model Content

[0004] This application provides a lightning protection device for temporary weather stations that is easy to load and unload, in order to overcome the shortcomings of the prior art and solve the problems of cumbersome loading and unloading and poor electrical connection stability of existing lightning protection devices for temporary weather stations.

[0005] This application provides a lightning protection device for a temporary weather station that is easy to load and unload, including a lightning trigger, a down conductor, a grounding electrode, and two non-metallic connecting brackets; the non-metallic connecting brackets are made of glass fiber reinforced plastic and have a cylindrical sleeve structure. The inner walls of both ends of the sleeve are machined with internal threads, and rubber sealing rings are embedded at the ends of the sleeve. Symmetrical anti-slip protrusions are provided on the outer side of the middle part of the sleeve, and a flexible metal disposable conductive layer is embedded at the bottom of the internal threads at both ends of the sleeve.

[0006] In some embodiments of this application, the flexible metal disposable conductive layer is an annular pleated structure made of copper foil. The inner diameter of the annular pleated structure is adapted to the outer diameter of the bottom of the flash trigger, both ends of the down conductor, and the top of the grounding body. The outer diameter of the annular pleated structure is adapted to the inner diameter of the non-metallic connection fixing frame.

[0007] In some embodiments of this application, the flash trigger is an integrated structure of a needle-shaped and cylindrical base made of stainless steel. The top of the flash trigger is a pointed flash trigger end, and the bottom of the flash trigger is a cylindrical connecting section. The outer wall of the cylindrical connecting section is machined with external threads, and the outer wall of the cylindrical connecting section is also provided with an annular groove, in which a copper pad is embedded.

[0008] In some embodiments of this application, the down conductor is a multi-strand copper stranded wire, and copper terminals are crimped to both ends of the down conductor. External threads are machined on the outside of the terminals, and three flexible copper protrusions are evenly distributed on the outer wall of the terminals.

[0009] In some embodiments of this application, the grounding electrode is a folded pointed pile structure made of copper-clad steel. The top of the grounding electrode is a cylindrical connecting section with external threads machined on the outer wall of the cylindrical connecting section. The outer wall of the cylindrical connecting section is provided with an annular groove, and a copper pad is embedded in the annular groove. The bottom of the grounding electrode is a pointed insertion end, and a folding hinge is provided in the middle of the grounding electrode.

[0010] In some embodiments of this application, the lightning protection device for temporary weather stations that is easy to load and unload also includes a disposable conductive component spare parts package, which contains a flexible metal disposable conductive layer, a copper pad for a lightning trigger, a copper pad for a grounding electrode, and a flexible copper bump for a down conductor.

[0011] Compared with the prior art, the present invention has the following beneficial effects: High ease of assembly and disassembly: Each component adopts a threaded connection and anti-slip protrusion design, requiring no professional tools. Assembly and disassembly can be completed by a single person. Assembly time is ≤18 minutes and disassembly time is ≤12 minutes, meeting the needs of rapid deployment and evacuation of temporary weather stations; the grounding body adopts a folding structure, and the down conductor has good flexibility, making it easy to transport and store. Good electrical connection stability: By setting a flexible metal disposable conductive layer in the non-metallic connection fixing frame, and in conjunction with the ring conductive contacts of the flash trigger and grounding body, and the flexible conductive protrusions of the down conductor, a conductive structure of "multi-point surface contact" and "point-to-surface combination" is formed, which greatly increases the contact area and the contact resistance is ≤10mΩ, ensuring rapid conduction of lightning current and reliable lightning protection effect. Long service life and high safety: The non-metallic connection bracket is made of FRP material, which has good insulation and does not participate in the conduction of lightning current, avoiding damage caused by current flow, and can withstand the air shock wave during lightning strikes; each metal component is made of corrosion-resistant material and is treated with anti-corrosion to adapt to complex environments; disposable conductive components ensure the conductivity reliability of each assembly, further improving the safety of the device. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solution of this utility model and do not constitute a limitation on the technical solution of this utility model.

[0013] Figure 1 This is a schematic diagram of a lightning protection device for a temporary weather station that is easy to load and unload, provided as an embodiment of this application.

[0014] Reference numerals in the attached diagram: 1-flash trigger; 2-down lead; 3-grounding electrode; 4-non-metallic connection bracket; 5-flexible metal disposable conductive layer. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0017] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0018] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, when describing pipelines, the terms "connected" and "linked" as used in this application have the meaning of establishing electrical connection. The specific meaning needs to be understood in conjunction with the context.

[0019] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0020] A lightning protection device for a temporary weather station that is easy to load and unload; please refer to [reference needed]. Figure 1 It includes a flash trigger 1, a down conductor 2, a grounding electrode 3, and two non-metallic connection and fixing brackets 4.

[0021] The non-metallic connection bracket 4 is made of fiberglass reinforced plastic (FRP), which has high strength, excellent insulation and weather resistance, and can work stably in environments ranging from -40℃ to 80℃. It is also lightweight and easy to install and remove. The non-metallic connection bracket 4 has a cylindrical sleeve structure with a length of 15cm and an outer diameter of 5cm. Its inner diameter is adapted to the outer diameter of the bottom of the flash trigger 1, both ends of the downlead 2, and the top of the grounding body 3 (all 4.8cm).

[0022] The inner walls of both ends of the sleeve are machined with internal threads (M5×1, 8cm depth) for connection with the external threads of the flash trigger 1, downlead 2, and grounding electrode 3, enabling detachable fixing. Rubber sealing rings (1cm thick, weather-resistant rubber) are embedded at both ends of the sleeve to prevent rainwater from seeping into gaps and to avoid component corrosion affecting connection stability. Two symmetrical anti-slip protrusions (0.5cm high, 2cm wide) are located on the outer side of the middle of the sleeve, facilitating manual tightening and loosening without additional tools.

[0023] The sleeve has a flexible, disposable conductive layer 5 embedded at the bottom of its internal threads at both ends. This conductive layer is a ring-shaped, pleated structure made of copper foil (purity ≥99.9%, thickness 0.1mm). The inner diameter of the ring-shaped, pleated structure is 4.8cm, the outer diameter is 5cm, the width is 1cm, and the pleat height is 0.3cm. During assembly, the conductive layer can be compressed and deformed, increasing the contact area with the connecting components, reducing contact resistance, and improving the electrical connection effect. Furthermore, this conductive layer is for single use only; it cannot be reused after disassembly due to the deformation caused by the pleats, ensuring the conductivity reliability of each assembly. The inner wall of the sleeve has a conductive layer positioning groove (0.1mm deep) for easy and quick insertion of new conductive layers.

[0024] Flash trigger 1 is made of 304 stainless steel and features an integrated structure of a needle-shaped component and a cylindrical base. It has a total height of 1.2m and weighs less than 1.5kg, allowing for easy handheld installation by a single person. The top of flash trigger 1 is a pointed flash tip (30° angle, 10cm long) to improve lightning attraction efficiency; the bottom is a cylindrical connecting section (10cm long, 4.8cm outer diameter) with external threads (M5×1, matching the internal threads of the non-metallic mounting bracket) for connection to the upper non-metallic mounting bracket.

[0025] A ring-shaped groove (1cm wide, 0.05mm deep) is machined on the outer wall of the cylindrical connecting section (2cm from the top). A flexible copper pad (0.08mm thick) is embedded in the groove, forming a ring-shaped conductive contact. During assembly, this conductive contact is precisely aligned with the flexible metal disposable conductive layer 5 inside the non-metallic fixing frame, further increasing the contact area and avoiding poor conductivity caused by thread wear. The threaded section at the bottom of the flash trigger 1 is coated with silicone-based grease to reduce thread wear during assembly and disassembly, improving the smoothness of disassembly and assembly.

[0026] Down conductor 2 is made of multi-strand copper stranded wire (cross-sectional area 25mm², containing 19 copper wires, each with a diameter of 1.3mm), which has high conductivity (conductivity ≥98% IACS) and good flexibility, making it easy to bend, store, and handle. Down conductor 2 is set to a length of 2m, which can be extended by connecting it with an additional non-metallic fixing frame according to the actual height of the temporary weather station (the connection structure is the same as the original fixing frame).

[0027] Each end of the downlead 2 is crimped with a copper terminal (material T2 copper, 3mm thick). The outer side of the terminal is machined with external threads (specification M5×1, length 8cm, matching the internal threads of the non-metallic fixing bracket). The connection between the terminal and the copper stranded wire is fixed by a cold pressing process (crimping pressure ≥50kN) and wrapped with polyolefin heat shrink tubing (thickness ≥0.8mm after shrinkage) to achieve insulation protection and connection reinforcement.

[0028] Three flexible copper bumps (0.5cm in diameter and 0.1cm in height) are evenly distributed on the outer wall of the terminal block (2cm from the top), arranged symmetrically at 120°. During assembly, the bumps can be embedded into the folds of the flexible metal disposable conductive layer 5 inside the non-metallic bracket, forming a "point-to-surface" conductive structure, effectively eliminating contact problems caused by thread machining errors.

[0029] Grounding electrode 3 is made of copper-clad steel (copper layer thickness ≥ 0.25mm, steel core diameter 12mm), and has a "folded pointed pile" structure. When unfolded, its length is 1m, and when folded, its length is 0.3m, facilitating transportation and handling. In addition to the copper layer, the surface of grounding electrode 3 is further coated with an epoxy resin anti-corrosion coating (thickness ≥ 0.1mm), adapting to complex soil environments such as humid and saline-alkali soils and extending its service life.

[0030] The top of the grounding electrode 3 is a cylindrical connecting section (10cm in length, 4.8cm in outer diameter), with external threads (M5×1, matching the internal threads of the non-metallic mounting bracket below) machined on its outer wall. The outer wall of the top cylindrical connecting section also has a ring-shaped groove (1cm wide, 0.05mm deep), inlaid with a flexible copper pad (same specifications as the flash trigger 1), which works in conjunction with the flexible metal disposable conductive layer 5 of the non-metallic mounting bracket below to ensure effective electrical connection. The bottom of the grounding electrode 3 has a pointed insertion end (45° tip angle) for easy and quick insertion into the soil. A stainless steel folding hinge (360° foldable, load-bearing capacity ≥50kg) is located in the middle, allowing the grounding electrode 3 to be divided into two sections when folded, improving portability.

[0031] To accommodate the replacement needs of the flexible metal disposable structure, the device also includes a disposable conductive component spare parts kit. Each kit contains 10 flexible metal disposable conductive layers, 5 copper pads for flash trigger 1, 5 copper pads for grounding electrode 3, and 5 sets of flexible copper bumps for downlead 2 (including special adhesive for easy replacement after damage). The spare parts kit is packaged in a waterproof aluminum foil bag, each weighing ≤100g, and can be stored together with other components of the device in a waterproof toolbox for easy carrying and replenishment.

[0032] The assembly process is as follows.

[0033] Grounding electrode 3 installation: Unfold the grounding electrode 3, hold the top connecting section by hand, align the bottom pointed end with the open area around the weather station (≥5m away from the equipment, away from water accumulation), press it vertically into the soil, and insert it to a depth of ≥0.8m (with the remaining 0.2m connecting section exposed).

[0034] For the non-metallic mounting bracket connection below: Take out one flexible metal disposable conductive layer 5 from the spare parts package and embed it into the positioning groove at one end of the mounting bracket (with the conductive layer folds facing outwards). Align this end of the mounting bracket with the top connection section of the grounding body 3 and turn it clockwise by hand until the sealing ring fits against the top of the grounding body 3 and there is no looseness.

[0035] Connection of lead 2: Check if the flexible conductive protrusion of the lead 2 terminal is intact. If it is damaged, take out a new protrusion from the spare parts package and stick it into the terminal groove with special adhesive. Align the terminal of one end of the lead 2 with the other end of the non-metallic bracket below, and turn it clockwise by hand until the terminal fits into the bracket and there is no looseness.

[0036] Connection of the non-metallic mounting bracket above: Take out another flexible metal disposable conductive layer 5 from the spare parts package, insert it into the positioning groove at one end of the mounting bracket, align that end of the mounting bracket with the terminal block at the other end of the lead wire 2, and turn it clockwise by hand until it fits snugly and there is no looseness.

[0037] Flash trigger 1 installation: Check if the annular conductive contact (copper pad) at the bottom of flash trigger 1 is intact. If it is worn, replace it with a new pad. Align the bottom connecting section of flash trigger 1 with the other end of the non-metallic mounting bracket above. Turn it clockwise by hand until flash trigger 1 is vertical and does not wobble. This completes the overall assembly.

[0038] The disassembly process is as follows.

[0039] Turn the flash trigger 1 counterclockwise by hand to separate it from the non-metallic mounting frame above. The flexible metal disposable conductive layer 5 inside the mounting frame will either fall off with the flash trigger 1 or remain inside the mounting frame.

[0040] Twist the upper non-metallic fixing bracket counterclockwise by hand to separate it from the down conductor 2, and remove the fixing bracket.

[0041] Twist the down conductor 2 counterclockwise by hand to separate it from the non-metallic fixing frame below, and remove the down conductor 2.

[0042] Twist the lower non-metallic bracket counterclockwise by hand to separate it from the grounding body 3, and remove the bracket.

[0043] Hold the top connecting section of the grounding electrode 3 with both hands and pull the grounding electrode 3 vertically upward (if the soil is compacted, you can gently shake it left and right before pulling it out), then fold it and store it.

[0044] Remove and discard any remaining old conductive layer from the mounting bracket. Wipe the surfaces of each component clean. Apply a small amount of anti-rust oil to the terminals of the flash trigger 1, grounding body 3, and downlead 2. Store them all in a waterproof toolbox.

[0045] This application provides an embodiment 1, a lightning protection device for a temporary weather station that is easy to load and unload, including a lightning trigger 1, a down conductor 2, a grounding body 3, two non-metallic connection and fixing frames 4, and a disposable conductive component spare parts package.

[0046] The non-metallic connecting bracket 4 is made of glass fiber reinforced plastic, with a cylindrical sleeve structure, 15cm in length, 5cm in outer diameter, and 4.8cm in inner diameter; the internal threads at both ends are M5×1 with a depth of 8cm; weather-resistant rubber sealing rings (1cm thick) are embedded at both ends; two anti-slip protrusions (0.5cm high and 2cm wide) are provided on the outer side of the middle; a copper foil annular corrugated conductive layer (0.1mm thick, 4.8cm inner diameter, 5cm outer diameter, 1cm wide, and 0.3cm corrugated height) is embedded at the bottom of the internal threads at both ends, and a conductive layer positioning groove with a depth of 0.1mm is provided on the inner wall.

[0047] Flash trigger 1 is made of 304 stainless steel, with a total height of 1.2m. The top pointed flash trigger end has an angle of 30° and a length of 10cm. The bottom cylindrical connecting section has a length of 10cm and an outer diameter of 4.8cm. The external thread specification is M5×1. The outer wall has an annular groove (width 1cm, depth 0.05mm) with a 0.08mm thick copper pad embedded inside. The threaded section is coated with silicone grease and weighs 1.5kg.

[0048] The down conductor 2 is a 25mm² multi-strand copper stranded wire (19 strands, each with a diameter of 1.3mm), 2m in length, with T2 copper terminals (3mm thick) crimped at both ends. The terminals have an external thread specification of M5×1 and a length of 8cm. The connection between the terminal and the copper stranded wire is cold-pressed (pressure 50kN) and wrapped with polyolefin heat shrink tubing (0.8mm thick after shrinkage). The outer wall of the terminal has three flexible copper bumps (0.5cm in diameter and 0.1cm in height) symmetrically distributed at 120°.

[0049] Grounding electrode 3 is made of copper-clad steel (copper layer thickness 0.25mm, steel core diameter 12mm), with a folded pointed pile structure, unfolded length 1m, folded length 0.3m, top cylindrical connecting section length 10cm, outer diameter 4.8cm, external thread specification M5×1, outer wall has an annular groove (width 1cm, depth 0.05mm), with an embedded 0.08mm thick copper pad, bottom pointed insertion end angle 45°, middle is equipped with stainless steel folding hinge (load capacity 50kg), and surface is sprayed with 0.1mm thick epoxy resin coating.

[0050] The disposable conductive component spare parts package contains 10 flexible metal disposable conductive layers, 5 copper pads for flash trigger 1, 5 copper pads for grounding body 3, and 5 sets of flexible copper bumps for downlead 2 (with special adhesive). It is packaged in a waterproof aluminum foil bag and weighs 100g.

[0051] The device can be assembled by a single person in 15 minutes. After assembly, the total contact resistance between the lightning trigger 1 and the grounding body 3 is measured to be 8mΩ. A simulated 10kA lightning current test was conducted, with a current conduction time of 0.8μs, a maximum temperature of 55℃ for the metal components, and a surface temperature change of 1.5℃ for the non-metallic mounting bracket. After 30 days of continuous operation in an environment of -40℃ to 80℃ and 95% humidity, the contact resistance was tested weekly, with a change of ≤1.5mΩ. The lightning protection effect is stable, and the device is easy to install and remove, meeting the needs of temporary weather stations.

[0052] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0053] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A lightning protection device for a temporary weather station that is easy to load and unload, characterized in that, Includes a flash trigger, down conductor, grounding electrode, and two non-metallic connection brackets; The non-metallic connecting bracket is made of glass fiber reinforced plastic and has a cylindrical sleeve structure. The inner walls of both ends of the sleeve are machined with internal threads, and rubber sealing rings are embedded at both ends of the sleeve. Symmetrical anti-slip protrusions are provided on the outer side of the middle part of the sleeve, and a flexible metal disposable conductive layer is embedded at the bottom of the internal threads at both ends of the sleeve.

2. The lightning protection device for a temporary weather station that is easy to load and unload according to claim 1, characterized in that, The flexible metal disposable conductive layer is an annular pleated structure made of copper foil. The inner diameter of the annular pleated structure is adapted to the outer diameter of the bottom of the flash trigger, both ends of the down conductor, and the top of the grounding body. The outer diameter of the annular pleated structure is adapted to the inner diameter of the non-metallic connection fixing frame.

3. The lightning protection device for a temporary weather station that is easy to load and unload according to claim 1, characterized in that, The flash trigger is an integrated structure of a needle-shaped and cylindrical base made of stainless steel. The top of the flash trigger is a pointed flash trigger end, and the bottom of the flash trigger is a cylindrical connecting section. The outer wall of the cylindrical connecting section is machined with external threads, and the outer wall of the cylindrical connecting section is also provided with an annular groove, in which a copper pad is embedded.

4. The lightning protection device for a temporary weather station that is easy to load and unload according to claim 1, characterized in that, The down conductor is a multi-strand copper stranded wire, and copper terminals are crimped to both ends of the down conductor. External threads are machined on the outside of the terminals, and three flexible copper protrusions are evenly distributed on the outer wall of the terminals.

5. The lightning protection device for a temporary weather station that is easy to load and unload according to claim 1, characterized in that, The grounding electrode is a folded pointed pile structure made of copper-clad steel. The top of the grounding electrode is a cylindrical connecting section with external threads machined on the outer wall of the cylindrical connecting section. The outer wall of the cylindrical connecting section is provided with an annular groove, and a copper pad is embedded in the annular groove. The bottom of the grounding electrode is a pointed insertion end, and a folding hinge is provided in the middle of the grounding electrode.

6. The lightning protection device for a temporary weather station that is easy to load and unload according to any one of claims 1 to 5, characterized in that, The lightning protection device for temporary weather stations that is easy to load and unload also includes a disposable conductive component spare parts package, which contains a flexible metal disposable conductive layer, a copper pad for the lightning trigger, a copper pad for the grounding electrode, and a flexible copper bump for the down conductor.

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