A lightning protection device

Abstract

The utility model relates to a lightning arrester, including all being the upper metal electrode and lower metal electrode of cover body shape, the opening of upper metal electrode and the opening of lower metal electrode are upper, lower and set up to each other, and the upper metal electrode and lower metal electrode are separated through annular insulating piece, and the lower end of lower metal electrode is connected with metal support piece, metal support piece is connected with ground assembly, the utility model discloses reasonable in design, and the upper metal electrode and lower metal electrode are separated through annular insulating piece, and lower metal electrode is grounded, and the upper metal electrode and lower metal electrode form the capacitor structure between each other at this moment, and the charge of cumulonimbus electromagnetic field is attracted through the upper metal electrode, and lower metal electrode has opposite charge through grounding, and there is potential difference between the upper metal electrode and lower metal electrode at this moment, and the charge attracted by the upper metal electrode is neutralized to make spherical charge distribution uniform, and the field intensity is stable, and ionization is not easy to produce, realizes the formation of lightning leader suppression.

Description

Technical Field

[0001] This utility model relates to a lightning protection device. Background Technology

[0002] To avoid damage from lightning strikes, lightning protection devices are usually installed to protect objects from lightning strikes.

[0003] Most commonly used lightning protection devices employ lightning rods or surge arresters. When a thundercloud discharges near the ground, it distorts the ground's electric field, creating a concentrated local electric field at the tip of the lightning rod or surge arrester. This influences the development direction of the lightning leader discharge, guiding the lightning to the lightning rod or surge arrester, and then the lightning current is conducted to the ground through the grounding down conductor and grounding device. However, existing lightning rods or surge arresters cannot prevent lightning strikes from occurring on the protected object. Utility Model Content

[0004] This utility model addresses the problems existing in the prior art by providing a lightning protection device.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a lightning protection device, comprising an upper metal electrode and a lower metal electrode, both of which are in the shape of a cover. The openings of the upper metal electrode and the lower metal electrode are arranged facing each other from top to bottom. The upper metal electrode and the lower metal electrode are separated by an annular insulating member. The lower end of the lower metal electrode is connected to a metal support member, and the metal support member is connected to a grounding component.

[0006] Furthermore, the upper metal electrode has a downwardly protruding upper convex part in the middle of its inner top surface, and the lower metal electrode has an upwardly protruding lower convex part in the middle of its inner bottom surface. The upper and lower convex parts are positioned correspondingly and are distributed at intervals.

[0007] Furthermore, both the upper and lower metal electrodes include an arc-shaped metal electrode body, and an annular connecting portion is provided around the opening of the metal electrode body; the top and bottom of the annular insulating member are provided with annular connecting grooves, and the annular connecting portion is inserted into the corresponding annular connecting groove and screwed into the annular connecting groove.

[0008] Furthermore, the inner circumferential side of the annular connecting groove is provided with a first connecting thread; the inner circumferential side of the annular connecting part is provided with a second connecting thread for engaging with the first connecting thread.

[0009] Furthermore, an annular groove is provided on the end face of the annular connecting part away from the metal electrode body, and a sealing ring is provided in the annular groove for contacting the bottom of the annular connecting groove. The sealing ring is bonded and fixed to the bottom of the annular connecting groove.

[0010] Furthermore, a vent hole is provided on the lower metal electrode, and the vent hole is connected to the inner cavity of the lower metal electrode.

[0011] Furthermore, the metal support includes a metal support rod, the upper end of which is screwed to the lower metal electrode, and the bottom of the metal support rod has a connecting hole extending along its axial direction, into which the grounding component is fixedly inserted.

[0012] Furthermore, a pair of upper and lower annular electrode plates are provided below the lower metal electrode, spaced apart. Both the upper and lower annular electrode plates are sleeved on the outside of the metal support rod. The upper annular electrode plate is insulated from the metal support rod, while the lower annular electrode plate is electrically connected to the metal support rod.

[0013] Furthermore, an insulating block with an I-shaped cross-section is disposed through the central hole of the upper annular electrode plate. The insulating block is sleeved on the outside of the metal support rod. The top of the insulating block contacts the outer bottom surface of the lower metal electrode, and the bottom of the insulating block contacts the first shoulder on the metal support rod. The inner side of the central hole of the lower annular electrode plate contacts the outer surface of the metal support rod, the top of the lower annular electrode plate contacts the bottom of the insulating block, and the bottom of the lower annular electrode plate contacts the second shoulder on the metal support rod.

[0014] Furthermore, a connecting screw hole is vertically formed at the lower center of the lower metal electrode, and the upper end of the metal support rod extends into the connecting screw hole and is screwed into it. A pair of vertically distributed mounting through holes with perpendicular axes are formed on the metal support rod, and the pair of mounting through holes are located above the connecting socket. A pair of radial through holes are formed on the side wall of the connecting socket, and a set screw for locking the grounding assembly is screwed into the radial through holes.

[0015] Compared with the prior art, the present invention has the following advantages: The present invention is reasonably designed and uses a ring-shaped insulating component to separate the upper and lower metal electrodes, and the lower metal electrode is grounded. At this time, a capacitor structure is formed between the upper and lower metal electrodes. The upper metal electrode attracts the charge of the electromagnetic field of the cumulonimbus cloud, while the lower metal electrode carries the opposite charge through grounding. At this time, there is a potential difference between the upper and lower metal electrodes, which neutralizes the charge attracted by the upper metal electrode, so that the spherical charge is evenly distributed, the field strength is stable, and ionization is not easily generated, thereby suppressing the formation of lightning leaders. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main cross-sectional structure of an embodiment of this utility model; Figure 2 This is a schematic diagram of the main structure of an embodiment of this utility model (grounding components omitted). Figure 3yes Figure 1 Enlarged diagram of point A in the diagram.

[0017] In the picture: 1-Upper metal electrode; 2-Lower metal electrode; 3-Annular insulating component; 4-Metal support component; 5-Grounding assembly; 6-Upper protrusion; 7-Lower protrusion; 8-Metal electrode body; 9-Annular connecting part; 10-Annular connecting groove; 11-Set screw; 12-Annular groove; 13-Sealing ring; 14-Vent hole; 15-Metal support rod; 16-Connecting socket; 17-Upper annular electrode plate; 18-Lower annular electrode plate; 19-Insulating block; 20-Connecting screw hole; 21-Mounting through hole; 22-Radial through hole. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] like Figures 1-3 As shown, this utility model discloses a lightning protection device, comprising an upper metal electrode 1 and a lower metal electrode 2, both in the shape of a cover. The openings of the upper metal electrode 1 and the lower metal electrode 2 are arranged facing each other upwards and downwards, and are separated by an annular insulating member 3. The upper metal electrode 1, the annular insulating member 3, and the lower metal electrode 2 form a spherical structure with an internal cavity. A metal support member 4 is connected to the lower end of the lower metal electrode 2, and the metal support member 4 is connected to a grounding component 5. By using an annular insulating member to separate the upper and lower metal electrodes, and grounding the lower metal electrode, a capacitor structure is formed between the upper and lower metal electrodes. During use, the upper metal electrode attracts charges (such as negative charges) from the electromagnetic field of cumulonimbus clouds, while the lower metal electrode carries the opposite charge (such as positive charges) through grounding. At this time, there is a potential difference between the upper and lower metal electrodes, which neutralizes the charges attracted by the upper metal electrode, making the spherical charge distribution uniform, the field strength stable, and ionization less likely to occur, thereby suppressing the formation of lightning leaders. When lightning strikes an excessively large object and hits the upper metal electrode, it is conducted to the ground through the lower metal electrode, metal support, and grounding assembly.

[0021] In this embodiment, the upper metal electrode 1 has a downwardly protruding upper protrusion 6 in the middle of its inner top surface, and the lower metal electrode 2 has an upwardly protruding lower protrusion 7 in the middle of its inner bottom surface. The upper protrusion 6 and the lower protrusion 7 are positioned correspondingly and spaced apart, and the upper and lower protrusions are used to realize the conduction of charge between the upper and lower metal electrodes.

[0022] In this embodiment, the upper metal electrode 1 and the lower metal electrode 2 have the same structure, both including a metal electrode body 8 in the shape of an arc-shaped cover, and an annular connecting part 9 is provided on the periphery of the opening of the metal electrode body 8; the top and bottom of the annular insulating member 3 are provided with annular connecting grooves 10, the annular connecting part 9 of the upper metal electrode 1 is inserted into the annular connecting groove 10 at the top of the annular insulating member 3 and screwed into the annular connecting groove 10, and the annular connecting part 9 of the lower metal electrode 2 is inserted into the annular connecting groove 10 at the bottom of the annular insulating member 3 and screwed into the annular connecting groove 10, that is, the upper metal electrode, the annular insulating member and the lower metal electrode are connected as a whole.

[0023] Specifically, the inner circumferential side of the annular connecting groove 10 is provided with a first connecting thread; the inner circumferential side of the annular connecting part 9 is provided with a second connecting thread for cooperating with the first connecting thread, thereby realizing the threaded connection between the annular connecting part and the annular connecting groove.

[0024] In this embodiment, an annular groove 12 is provided on the end face of the annular connecting portion 9 away from the metal electrode body 8. A sealing ring 13 is provided in the annular groove 12 for contacting the bottom of the annular connecting groove 10. The sealing ring 13 is bonded and fixed to the bottom of the annular connecting groove 10 with adhesive. By providing a sealing ring and bonding it with adhesive, the sealing performance of the connection between the upper and lower metal electrodes and the annular insulating component is effectively improved.

[0025] In this embodiment, a vent 14 is provided on the lower metal electrode 2, and the vent 14 is connected to the inner cavity of the lower metal electrode 2. During normal use, a plug is installed inside the vent 14. When lightning strikes the lightning arrester, the cavity formed by the upper and lower metal electrodes will have high pressure and high temperature. At this time, the vent 14 can be used to release pressure and vent air. At the same time, the vent 14 is also used to test the internal sealing performance after the lightning arrester is manufactured.

[0026] In this embodiment, the metal support 4 includes a metal support rod 15 with a stepped shaft structure. The metal support rod 15 is arranged vertically, and the upper end of the metal support rod 15 is screwed to the lower metal electrode 2. The bottom of the metal support rod 15 is provided with a connecting socket 16 extending along its axial direction. The grounding component 5 is fixedly inserted into the connecting socket 16.

[0027] In this embodiment, a pair of upper annular electrode plates 17 and lower annular electrode plates 18 are arranged below the lower metal electrode 2, with the upper and lower annular electrode plates 17 and 18 spaced apart. The upper annular electrode plates 17 and 18 are both sleeved on the outside of the metal support rod 15. The upper annular electrode plate 17 is insulated from the metal support rod 15, and the lower annular electrode plate 18 is electrically connected to the metal support rod 15. At this time, a capacitor structure is also formed between the upper annular electrode plate and the lower annular electrode plate.

[0028] In this embodiment, an insulating block 19 with an I-shaped cross-section is disposed through the central hole of the upper annular electrode plate 17. The insulating block 19 is sleeved on the outside of the metal support rod 15. The top of the insulating block 19 is in contact with the outer bottom surface of the lower metal electrode 2, and the bottom of the insulating block 19 is in contact with the first shoulder on the metal support rod 15. The inner side of the central hole of the lower annular electrode plate 18 is in contact with the outer surface of the metal support rod 15. That is, the upper annular electrode plate is insulated, while the lower annular electrode plate is conductive. The top of the lower annular electrode plate 18 is in contact with the bottom of the insulating block 19, and the bottom of the lower annular electrode plate 18 is in contact with the second shoulder on the metal support rod 15.

[0029] In this embodiment, a connecting screw hole 20 is vertically opened at the middle of the lower end of the lower metal electrode 2, and the upper end of the metal support rod 15 extends into the connecting screw hole 20 and is screwed into the connecting screw hole 20.

[0030] In this embodiment, the metal support rod 15 has a pair of vertically distributed mounting through holes 21 with perpendicular axes. The pair of mounting through holes 21 are located above the connecting insertion hole 16. Connecting bolts can be inserted into the pair of mounting through holes. The entire lightning protection device is installed and fixed by using the connecting bolts that pass through the mounting through holes.

[0031] In this embodiment, a pair of radial through holes 22 are provided on the upper sidewall of the connecting socket 16, and set screws 23 for locking the grounding component 5 are screwed into the radial through holes 22. Furthermore, the grounding component 5 is a grounding wire, which extends into the connecting socket, and then the portion of the grounding wire extending into the connecting socket is locked and fixed by the set screw, thereby realizing the fixed connection between the grounding wire and the metal support rod.

[0032] In this embodiment, the main difference from traditional lightning rods and arresters is that traditional lightning rods and arresters attract lightning, thereby generating an upward or downward leader between the cumulonimbus cloud and the tip of the lightning rod or arrester. This invention has the advantage of not exciting or capturing lightning, but rather working by attracting and gradually releasing the charge in the upper metal electrode, and by reducing the electrical risks caused by lightning strikes by preventing them.

[0033] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0034] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0035] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A lightning protection device, characterized in that: It includes an upper metal electrode and a lower metal electrode, both of which are in the shape of a cover. The openings of the upper metal electrode and the lower metal electrode are arranged facing each other from top to bottom. The upper metal electrode and the lower metal electrode are separated by an annular insulating member. The lower end of the lower metal electrode is connected to a metal support member, which is connected to a grounding component.

2. The lightning protection device according to claim 1, characterized in that: The upper metal electrode has a downwardly protruding upper convex part in the middle of its inner top surface, and the lower metal electrode has an upwardly protruding lower convex part in the middle of its inner bottom surface. The upper and lower convex parts are positioned correspondingly and are spaced apart.

3. A lightning protection device according to claim 1, characterized in that: Both the upper and lower metal electrodes include an arc-shaped shield-like metal electrode body, and an annular connecting portion is provided around the opening of the metal electrode body; the top and bottom of the annular insulating member are provided with annular connecting grooves, and the annular connecting portion is inserted into the corresponding annular connecting groove and screwed into the annular connecting groove.

4. A lightning protection device according to claim 3, characterized in that: The inner circumferential side of the annular connecting groove is provided with a first connecting thread; the inner circumferential side of the annular connecting part is provided with a second connecting thread for cooperating with the first connecting thread.

5. A lightning protection device according to claim 3, characterized in that: An annular groove is provided on the end face of the annular connecting part away from the metal electrode body. A sealing ring is provided in the annular groove for contacting the bottom of the annular connecting groove. The sealing ring is bonded and fixed to the bottom of the annular connecting groove.

6. A lightning protection device according to claim 1, characterized in that: A vent hole is provided on the lower metal electrode, and the vent hole is connected to the inner cavity of the lower metal electrode.

7. A lightning protection device according to claim 1, characterized in that: The metal support includes a metal support rod, the upper end of which is screwed to the lower metal electrode, and the bottom of the metal support rod has a connecting hole extending along its axial direction, into which the grounding component is fixedly inserted.

8. A lightning protection device according to claim 7, characterized in that: Below the lower metal electrode, there is a pair of upper and lower annular electrode plates spaced apart. Both the upper and lower annular electrode plates are sleeved on the outside of the metal support rod. The upper annular electrode plate is insulated from the metal support rod, while the lower annular electrode plate is electrically connected to the metal support rod.

9. A lightning protection device according to claim 8, characterized in that: An insulating block with an I-shaped cross-section is inserted through the central hole of the upper annular electrode plate. The insulating block is sleeved on the outside of the metal support rod. The top of the insulating block contacts the outer bottom surface of the lower metal electrode, and the bottom of the insulating block contacts the first shoulder on the metal support rod. The inner side of the central hole of the lower annular electrode plate contacts the outer surface of the metal support rod, the top of the lower annular electrode plate contacts the bottom of the insulating block, and the bottom of the lower annular electrode plate contacts the second shoulder on the metal support rod.

10. A lightning protection device according to claim 7, characterized in that: The lower metal electrode has a vertically formed connecting screw hole at its lower center. The upper end of the metal support rod extends into the connecting screw hole and is screwed into it. The metal support rod has a pair of vertically distributed mounting through holes with perpendicular axes, located above the connecting socket. The side wall of the connecting socket has a pair of radial through holes, and set screws for locking the grounding assembly are screwed into the radial through holes.

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