Lightning defense grounding device

Abstract

The utility model discloses a lightning defense grounding device, which relates to the technical field of lightning defense, and comprises a grounding body, a grounding electrode is arranged at the bottom of the grounding body and is conical, a wiring end is arranged at the top of the grounding body, the upper end of the wiring end is fixedly connected with a top plate, and the top plate is fixedly connected with the grounding body. A plurality of groups of pins are arranged on the side wall of the grounding body, the grounding body is sleeved with a clamping mechanism, and supporting plates are symmetrically arranged on the two sides of the clamping mechanism. According to the utility model, the protective plates above are fixed through the sleeves and the bolts, and finally the protective plates sleeve the two sides of the wiring terminal, so that a certain protection effect is achieved, the erosion of soil to the wiring terminal is reduced, the wiring terminal can be merged into a grounding grid in subsequent expansion, and the supporting plates on the two sides are matched; the supporting plate can rapidly conduct and diffuse current to surrounding soil, electric field distribution at the top end of the grounding body is optimized, the performance of a grounding system is improved, and potential safety hazards are reduced.

Description

Technical Field

[0001] This utility model relates to the field of lightning protection technology, and in particular to a lightning protection grounding device. Background Technology

[0002] Modern building lightning protection systems include three main parts: protection against direct lightning strikes, lightning induction, and lightning surge intrusion. In order to achieve the purpose of protecting against different types of lightning damage, a complete lightning protection system must adopt technologies such as lightning interception, current diversion, shielding, voltage equalization, and grounding.

[0003] Grounding devices are crucial facilities used to divert the powerful current generated by lightning into the earth, thereby protecting buildings, electrical equipment, and personnel. National standards already exist to regulate lightning protection grounding devices, such as the "Code for Design of Lightning Protection for Buildings" (GB 50057) and the "Code for Design of Lightning Protection and Grounding Engineering for Communication Bureaus (Stations)" (GB 50689-2011). Similar patents exist, such as CN221767025U, which discloses a lightning protection grounding device that can buffer impact pressure, prevent damage to the grounding device, and extend its service life. However, in actual use, when current flows into the earth through the down conductor connected to the grounding electrode, the electric field strength at the top of the grounding electrode is relatively high. The protective components installed are not conducive to the diffusion of current from the end of the grounding electrode to the surrounding soil, leading to an increase in the equivalent resistance between the grounding electrode and the soil, affecting the performance of the grounding system. Furthermore, the horizontal component of the electric field is difficult to control, resulting in a non-uniform electric field around the grounding electrode, creating safety hazards. Therefore, this application proposes a lightning protection grounding device. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that a large electric field at the top of the grounding electrode affects the performance of the grounding system in the prior art, and to propose a lightning protection grounding device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A lightning protection grounding device includes a grounding body, a grounding electrode at the bottom of the grounding body, the grounding electrode being tapered, a terminal block at the top of the grounding body, a top plate being fixedly connected to the upper end of the terminal block, and multiple sets of pins on the side wall of the grounding body.

[0007] The grounding body is fitted with a clamping mechanism, and support plates are symmetrically arranged on both sides of the clamping mechanism. Multiple grooves are opened on the upper surface of the two support plates, and multiple protrusions are fixedly connected to the lower surface of the two support plates.

[0008] The clamping mechanism is provided with a guard plate at its upper end, and the guard plate is semi-circular. An abutment plate is fixedly connected to the top of the guard plate, and the outer diameter of the abutment plate is equal to the outer diameter of the top plate.

[0009] As a further preferred embodiment of this technical solution, the terminal includes a connecting plate, and the bottom of the connecting plate is fixedly connected to the grounding body, and the top of the connecting plate is fixedly connected to the lower surface of the top plate.

[0010] The connecting plate has a through terminal, and a pressure plate is threaded onto the terminal.

[0011] As a further preferred embodiment of this technical solution, a wire harness groove is provided on the top plate. The wire harness groove is an arc-shaped groove, and the position of the wire harness groove corresponds to the position of the terminal.

[0012] As a further preferred embodiment of this technical solution, the multiple sets of pins are arranged in an alternating cross pattern, and the multiple sets of pins are arranged at equal intervals.

[0013] The upper surfaces of all the pin groups are set to be arc-shaped.

[0014] As a further preferred embodiment of this technical solution, the clamping mechanism includes two sleeves, which are connected together by a bolt, and the bolt enables convenient disassembly of the two sleeves.

[0015] Extension plates are fixedly connected to the side walls of the two sleeves respectively, and pins are rotatably connected to the side walls of the extension plates.

[0016] As a further preferred embodiment of this technical solution, the two sleeves are symmetrically arranged on both sides of the grounding body, and the tops of the two sleeves are respectively fixedly connected to the corresponding protective plates;

[0017] The end of the support plate near the sleeve is fitted onto the pin, and the pin is rotatably connected to the support plate.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model uses sleeves and bolts to fix the upper protective plate, so that the protective plate is finally fitted on both sides of the terminal, which has a certain protective effect, reduces soil erosion of the terminal, and facilitates the subsequent expansion to integrate the terminal into the grounding grid. With the support plates on both sides, when the down conductor carries current, the support plates can quickly conduct and diffuse the current to the surrounding soil, optimize the electric field distribution at the top of the grounding body, improve the performance of the grounding system and reduce safety hazards.

[0020] 2. This utility model uses support plates set on both sides of the grounding body. During the burial process, the support plates abut against the inner wall of the grounding pit, which can play a certain limiting role and ensure that the grounding body is installed vertically. After being moved to the terminal, the support plates on both sides tilt downwards. The grooves and protrusions set can increase the contact surface with the soil, improve the stability of the grounding body, and ensure the safe and stable operation of the grounding system. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0022] Figure 1 This is an isometric structural diagram of a lightning protection grounding device proposed in this utility model;

[0023] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0024] Figure 3 This is a partial structural schematic diagram of a lightning protection grounding device proposed in this utility model;

[0025] Figure 4 This is a schematic diagram of the clamping mechanism and support plate of a lightning protection grounding device proposed in this utility model.

[0026] In the diagram: 1. Grounding body; 2. Grounding electrode; 3. Terminal; 31. Connecting plate; 32. Terminal; 33. Pressure plate; 34. Top plate; 35. Cable tray; 4. Pin; 5. Clamping mechanism; 51. Sleeve; 52. Bolt; 53. Extension plate; 54. Pin; 6. Support plate; 61. Groove; 62. Protrusion; 7. Protective plate; 71. Abutment plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] This utility model provides a technical solution: such as Figure 1As shown, a lightning protection grounding device includes a grounding body 1, a grounding electrode 2 at the bottom of the grounding body 1, and the grounding electrode 2 is cone-shaped to facilitate the current conduction and diffusion at the bottom of the grounding body 1. A terminal 3 is provided at the top of the grounding body 1. The terminal 3 includes a connecting plate 31, and the bottom of the connecting plate 31 is fixedly connected to the grounding body 1. The top of the connecting plate 31 is fixedly connected to the lower surface of the top plate 34. A terminal 32 is provided through the connecting plate 31, and a pressure plate 33 is threadedly connected to the terminal 32.

[0029] like Figure 2 As shown, a top plate 34 is fixedly connected to the upper end of the terminal 3. A wire harness groove 35 is provided on the top plate 34. The wire harness groove 35 is an arc-shaped groove, and the position of the wire harness groove 35 corresponds to the position of the terminal 32. Furthermore, the down wire extends to the terminal 3 through the wire harness groove 35. The end of the down wire is connected and fixed through the terminal 32 and the pressure plate 33.

[0030] Specifically, the sidewall of the grounding electrode 1 is provided with multiple sets of pins 4, which are arranged in an alternating cross pattern and are equidistant from each other. The upper surface of each set of pins 4 is arc-shaped. The arc-shaped grooves at the top of the pins 4 increase the contact area between the soil and the grounding electrode 1 during installation, improving its stability. Furthermore, the multiple pins 4 guide the current in different directions, dispersing the current concentrated on the grounding electrode 1 to various branches and guiding the current to flow in different horizontal directions, thus making the electric field distribution more uniform.

[0031] like Figure 4 As shown, a clamping mechanism 5 is fitted onto the grounding body 1. The clamping mechanism 5 includes two sleeves 51, which are connected together by a bolt 52. The bolt 52 enables the disassembly of the two sleeves 51. Two extension plates 53 are fixedly connected to the side walls of the two sleeves 51 respectively. Pins 54 are rotatably connected to the side walls of the two opposite extension plates 53. The two sleeves 51 are symmetrically arranged on both sides of the grounding body 1. The tops of the two sleeves 51 are fixedly connected to the corresponding protective plates 7 respectively. The end of the support plate 6 near the sleeve 51 is fitted onto the pin 54. The support plate 6 is rotatably connected to the pin 54.

[0032] Specifically, such as Figure 4As shown, support plates 6 are symmetrically arranged on both sides of the clamping mechanism 5. Multiple grooves 61 are formed on the upper surface of each support plate 6, and multiple protrusions 62 are fixedly connected to the lower surface of each support plate 6. The support plates 6 on both sides ensure that the grounding electrode 1 remains vertical during installation. Under the same grounding conditions, the grooves 61 and protrusions 62 increase the contact area between the support plate 6 and the soil, facilitating current diffusion. Furthermore, when the down conductor transmits current to the grounding electrode 1, it can share the current at the top of the grounding electrode 1, allowing the current at the top of the grounding electrode 1 to have more paths to choose from. This guides some of the current into the deeper soil, adjusting the horizontal component flowing towards the soil around the top of the grounding electrode 1, thereby reducing the concentration of the electric field intensity and changing the distribution of the electric field.

[0033] like Figure 3 As shown, a protective plate 7 is provided at the upper end of the clamping mechanism 5, and the protective plate 7 is semi-circular. An abutment plate 71 is fixedly connected to the top of the protective plate 7, and the outer diameter of the abutment plate 71 is equal to the outer diameter of the top plate 34. Furthermore, through the fixing of the clamping mechanism 5, the protective plate 7 is fitted onto the terminal 3 from both sides, and the abutment plate 71 above the protective plate 7 abuts against the top plate 34. This protects the connection between the terminal 32 and the down conductor, preventing damage to the terminal 3 due to collisions or squeezing. It also reduces direct contact between the soil and the connection between the terminal 32 and the down conductor, reducing corrosion caused by substances in the soil and extending the service life of the grounding system. Simultaneously, the inner wall of the protective plate 7 contacts the side wall of the connecting plate 31, serving as an extension of the terminal 3, increasing the current dissipation area at the top of the grounding body 1, and improving the reliability of the grounding system. Further reference... Figure 1 The width of terminal 3 is close to the diameter of grounding body 1, and the edge of terminal 3 is set to be arc-shaped relative to the protective plate 7, with the overall side contacting the inner wall of the protective plate 7.

[0034] This utility model provides a lightning protection grounding device, the specific working principle of which is as follows: During installation, the bolts 52 on both sides of the clamping mechanism 5 are tightened to fix the two sleeves 51 onto the grounding body 1. Simultaneously, the support plates 6 on both sides of the clamping mechanism 5 are kept open. The grounding body 1 is vertically placed into the pre-dug grounding pit. The end of the support plate 6 away from the grounding body 1 abuts against the inner wall of the grounding pit, which can limit the grounding body 1 and prevent it from tilting during subsequent backfilling. The diameter of the grounding pit dug at the location of the grounding body 1 is typically 30-80cm. The opening distance of the support plates 6 is adjusted to a suitable ratio. When placing the grounding body 1, the top of the support plate 6 is directly inserted into the surrounding soil. Combined with the fixation of the clamping mechanism 5, the two ends of the support plate 6 are limited, and the opening angle is fixed. Regarding the expansion of the support plate 6, a certain damping can be set at the position where the pin 54 is rotatably connected to the support plate 6, or a rotatably connected support column can be set below the support plate 6, with the other end of the support column supported in a further recessed area on the outer surface of the grounding body. However, setting damping is better than setting a support column, as it will not affect the grounding design operation. Ensure that the grounding body 1 is installed vertically. After burying to a certain depth, tighten the bolt 52 again to move the sleeve 51 to the top of the grounding body 1, so that the upper protective plate 7 is fitted onto the terminal 3. The connected down conductor extends through the wire harness groove 35 opened on the top plate 34 to the space between the protective plates 7. The top of the protective plate 7 contacts the lower surface of the top plate 34, which can protect the terminal 3 and prevent damage to the grounding body 1 due to collision. Continue burying to ensure that the grounding body 1 is completely in the grounding pit, and keep the support plates 6 on both sides tilted (e.g. Figure 3 As shown in the figure, when the grounding pit is compacted after installation, the soil in the grounding pit will enter the groove 61 on the upper surface of the support plate 6, while the protrusion 62 on the lower surface of the support plate 6 will sink into the soil, increasing the contact area with the soil, reducing the equivalent resistance during current transmission, and effectively guiding the electric field distribution at the top of the grounding body 1, ensuring the safe and stable operation of the grounding system.

[0035] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

Claims

1. A lightning protection grounding device, comprising a grounding electrode (1), characterized in that, The grounding body (1) has a grounding electrode (2) at its bottom, and the grounding electrode (2) is cone-shaped. The grounding body (1) has a terminal (3) at its top, and a top plate (34) is fixedly connected to the upper end of the terminal (3). Multiple sets of pins (4) are provided on the side wall of the grounding body (1). The grounding body (1) is fitted with a clamping mechanism (5), and the clamping mechanism (5) is symmetrically provided with support plates (6) on both sides. The upper surfaces of the two support plates (6) are respectively provided with multiple grooves (61), and the lower surfaces of the two support plates (6) are respectively fixedly connected with multiple protrusions (62). The upper end of the clamping mechanism (5) is provided with a guard plate (7), and the guard plate (7) is set as a semi-circle. The top of the guard plate (7) is fixedly connected with an abutment plate (71), and the outer diameter of the abutment plate (71) is equal to the outer diameter of the top plate (34).

2. The lightning protection grounding device according to claim 1, characterized in that, The terminal (3) includes a connecting plate (31), and the bottom of the connecting plate (31) is fixedly connected to the grounding body (1), and the top of the connecting plate (31) is fixedly connected to the lower surface of the top plate (34). A terminal (32) is provided through the connecting plate (31), and a pressure plate (33) is threadedly connected to the terminal (32).

3. A lightning protection grounding device according to claim 2, characterized in that, The top plate (34) is provided with a wire harness groove (35), which is an arc-shaped groove, and the position of the wire harness groove (35) corresponds to the position of the terminal (32).

4. A lightning protection grounding device according to claim 1, characterized in that, The multiple sets of pins (4) are arranged in an alternating cross pattern, and the multiple sets of pins (4) are arranged at equal intervals; The upper surfaces of the multiple sets of pins (4) are all set to be arc-shaped.

5. A lightning protection grounding device according to claim 1, characterized in that, The clamping mechanism (5) includes two sleeves (51), and the two sleeves (51) are connected together by a bolt (52), which enables the convenient disassembly of the two sleeves (51); An extension plate (53) is fixedly connected to the side wall of each of the two sleeves (51), and a pin (54) is rotatably connected to the side wall of the extension plate (53).

6. A lightning protection grounding device according to claim 5, characterized in that, The two sleeves (51) are symmetrically arranged on both sides of the grounding body (1), and the tops of the two sleeves (51) are respectively fixedly connected to the corresponding protective plates (7); The end of the support plate (6) near the sleeve (51) is sleeved on the pin (54), and the pin (54) is rotatably connected to the support plate (6).

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