Lightning protection building electrical grounding device

Abstract

The utility model discloses a lightning-proof building electrical grounding device, which comprises a vertical grounding body, the vertical grounding body is made of a stainless steel tube, the outer surface of the vertical grounding body is wound with a spiral copper strip, and the inner cavity of the vertical grounding body is filled with graphite-based conductive gel; the bottom end of the vertical grounding body is connected with a horizontal grounding body, and the horizontal grounding body is of a net structure woven by copper-clad steel stranded wires. The part, buried underground, of the vertical grounding body is sleeved with an argil container, a resistance reducing agent is arranged in the argil container, and a sealing plug is arranged at the material injection end of the argil container. According to the utility model, through the arrangement of the vertical grounding body and the horizontal grounding body, the contact area with the soil can be effectively increased through the cooperation of the two grounding bodies, the lightning current can be smoothly discharged, the counterattack overvoltage can be effectively avoided, meanwhile, the vertical grounding body adopts the stainless steel tube, and the copper strip is wound outside the stainless steel tube, so that the grounding effect is good. And graphite-based conductive gel is arranged in the stainless steel tube.

Description

Technical Field

[0001] This utility model relates to the field of building grounding technology, specifically to a building electrical grounding device for lightning protection. Background Technology

[0002] In building electrical systems, grounding devices are a core component of lightning protection. Their function is to quickly conduct lightning current into the ground to prevent equipment damage or electric shock to personnel.

[0003] In the prior art, utility model patent CN215580112U discloses a building grounding electrical conduit system, including a conduit connecting frame and a protective sleeve. Grounding metal rods are provided on both outer sides of the lower end of the conduit connecting frame, and a mounting plate is provided on the outer side of the upper end of the conduit connecting frame. Bolts are provided on both outer sides of the upper end of the mounting plate, and an electrical conduit is provided in the middle of the upper end of the mounting plate. Guide holes are provided on both sides of the inner side of the mounting plate, and a slot is provided in the middle of the inner wall of the mounting plate. This building grounding electrical conduit system includes grounding metal rods, which form a welded integral structure with the base plate. The grounding metal rods and the base plate serve as the supporting and load-bearing parts of the entire conduit connecting frame. Because the two are welded together, they have extremely strong load-bearing capacity and stability. When using this device, the grounding metal rods with good conductivity are buried more than 1 meter underground and effectively and reliably connected to the conduit using wires with a diameter of D2 or higher, avoiding static electricity or leakage damage caused by current passing through the conduit.

[0004] The building grounding electrical conduit system provided by the aforementioned patent mainly uses metal rods for grounding. However, the contact area between this vertical grounding electrode and the soil is limited, resulting in excessive grounding resistance, poor discharge of lightning current, and easy triggering of backflash overvoltage. Furthermore, the metal rods are prone to electrochemical corrosion when buried in humid or acidic / alkaline environments for a long time, leading to a gradual increase in grounding resistance and requiring frequent maintenance or replacement. Utility Model Content

[0005] The purpose of this utility model is to provide a building electrical grounding device for lightning protection, which aims to improve the existing problems of limited contact area between the vertical grounding body and the soil, resulting in excessive grounding resistance, poor discharge of lightning current, easy to cause backflash overvoltage, and metal rods being buried in humid, acidic or alkaline environments for a long time, which are prone to electrochemical corrosion, leading to a gradual increase in grounding resistance and the need for frequent maintenance or replacement.

[0006] This utility model is implemented as follows:

[0007] A lightning protection building electrical grounding device includes a vertical grounding electrode made of stainless steel pipe with a spiral copper strip wound around its outer surface and a graphite-based conductive gel filling its inner cavity. A horizontal grounding electrode is connected to the bottom of the vertical grounding electrode, which is a mesh structure made of copper-clad steel stranded wire. A clay container is fitted around the portion of the vertical grounding electrode buried below ground level. The clay container contains a resistance-reducing agent, and the filling end of the clay container is sealed.

[0008] Preferably, the vertical grounding electrode has a flange at its bottom end, the flange has multiple flange holes, and the vertical grounding electrode has a transfer pipe at its top end.

[0009] Preferably, the horizontal grounding electrode is provided with a pipe joint at the top, a connecting plate is provided at the top of the pipe joint, a plurality of connecting holes are provided on the connecting plate, and an insertion hole is provided in the middle of the pipe joint.

[0010] Preferably, the clay container has multiple slow-release holes on its side, and the top and bottom of the clay container are both provided with sleeve holes for fitting onto a vertical grounding body; the top of the clay container is provided with an injection pipe, and the middle of the injection pipe is provided with an injection hole, which communicates with the inner cavity of the clay container.

[0011] Preferably, the bottom end of the plug is provided with a stud, which is threadedly connected to the injection hole.

[0012] Preferably, it also includes a graphite conductive post; the graphite conductive post is disposed between the vertical grounding body and the horizontal grounding body, the bottom end of the graphite conductive post is inserted into the interior of the horizontal grounding body, and the top end abuts against the bottom end of the vertical grounding body, the vertical grounding body and the horizontal grounding body are connected by bolts, and the graphite conductive post is pressed tightly.

[0013] Preferably, the graphite conductive post has a connecting plate at the top, and the connecting plate has multiple perforations on its edge.

[0014] Preferably, it also includes a protective sleeve, which is fitted over the outer side of the portion of the vertical grounding electrode that is exposed on the ground.

[0015] Preferably, the protective sleeve is provided with a fixing plate at both the top and bottom, and the fixing plate has multiple fixing holes on its edge; the protective sleeve is provided with multiple rubber buffer rings from top to bottom on its side.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model, by setting up both a vertical and a horizontal grounding electrode, effectively increases the contact area with the soil, ensuring smooth discharge of lightning current and effectively preventing backflashover voltage. The vertical grounding electrode uses a stainless steel pipe with copper strips wrapped around it, and graphite-based conductive gel is placed inside. This copper-clad steel material is resistant to acid and alkali corrosion and has a long service life. Furthermore, a clay container is fitted around the part of the vertical grounding electrode buried below ground, filled with a resistance-reducing agent, which effectively reduces the resistance of the grounding electrode and facilitates smoother conductivity.

[0018] 2. This utility model improves the conductivity between the vertical and horizontal grounding electrodes by setting a graphite conductive post between them.

[0019] 3. This utility model protects the exposed part of the vertical grounding electrode by installing a protective sleeve on the top of the vertical grounding electrode, thus preventing the vertical grounding electrode from being easily damaged. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the vertical grounding electrode of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the horizontal grounding electrode of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the clay container of this utility model;

[0024] Figure 5 This is a schematic diagram of the sealing structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the graphite conductive pillar of this utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the protective sleeve of this utility model.

[0027] In the diagram: 1. Vertical grounding electrode; 11. Spiral copper strip; 12. Flange; 13. Flange hole; 14. Adapter pipe; 15. Graphite-based conductive gel; 2. Horizontal grounding electrode; 21. Pipe joint; 22. Connecting disc; 23. Connecting hole; 24. Insertion hole; 3. Clay container; 31. Slow-release hole; 32. Sleeve hole; 33. Resistance reducing agent; 34. Injection pipe; 35. Injection hole; 4. Plug; 41. Stud; 5. Graphite conductive post; 51. Connecting disc; 52. Perforation; 6. Protective sleeve; 61. Rubber buffer ring; 62. Fixing disc; 63. Fixing hole. Detailed Implementation

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0030] Example 1

[0031] like Figure 1 As shown, a lightning protection building electrical grounding device includes a vertical grounding electrode 1, which is made of stainless steel pipe with a spiral copper strip 11 wound around its outer surface. The spiral copper strip 11 significantly increases the corrosion resistance of the vertical grounding electrode 1, thereby extending the service life of the entire grounding device. The inner cavity of the vertical grounding electrode 1 is filled with graphite-based conductive gel 15; the spiral copper strip 11 and graphite-based conductive gel 15 expand the discharge area, ensuring smooth discharge of lightning current. A horizontal grounding electrode 2 is connected to the bottom of the vertical grounding electrode 1. The horizontal grounding electrode 2 is a copper-clad steel stranded wire woven into a mesh structure; this structure of the horizontal grounding electrode 2 ensures smooth release of lightning current. A clay container 3 is fitted inside the portion of the vertical grounding electrode 1 buried below ground. The clay container 3 contains a resistance-reducing agent 33, and the filling end of the clay container 3 is sealed with a plug 4. The clay container 3, together with the resistance-reducing agent 33, effectively reduces the resistance of the grounding device. The resistance-reducing agent 33 consists of bentonite, NaCl, and carbon fiber, among other components.

[0032] like Figure 2 As shown, the vertical grounding electrode 1 has a flange 12 at its bottom end, and the flange 12 has multiple flange holes 13. The flange 12 and flange holes 13 facilitate the connection between the vertical grounding electrode 1 and the horizontal grounding electrode 2. The vertical grounding electrode 1 has a connecting pipe 14 at its top end, which facilitates the connection between the vertical grounding electrode 1 and the grounding port of the building.

[0033] like Figure 3 As shown, the horizontal grounding electrode 2 has a pipe connector 21 at its top, and a connecting plate 22 at the top of the pipe connector 21. The connecting plate 22 has multiple connecting holes 23. Both the pipe connector 21 and the connecting plate 22 are made of titanium alloy, and the pipe connector 21, together with the connecting plate 22, facilitates the connection between the horizontal grounding electrode 2 and the vertical grounding electrode 1. The pipe connector 21 also has a socket 24 in the middle, which facilitates the installation of the graphite conductive post 5.

[0034] like Figure 4 As shown, the clay container 3 has multiple slow-release holes 31 on its side. The resistance-reducing agent 33 evenly coats the surface of the grounding body through the slow-release holes 31, forming an alkaline protective layer (bentonite pH≈9), which inhibits the electrochemical corrosion of the metal grounding body. The clay container 3 also has sleeve holes 32 at the top and bottom center for fitting onto the vertical grounding body 1. The top of the clay container 3 has an injection pipe 34, and the middle of the injection pipe 34 has an injection hole 35, which communicates with the inner cavity of the clay container 3. This structure facilitates the injection of the resistance-reducing agent 33 into the clay container 3 after it is fitted onto the vertical grounding body 1.

[0035] like Figure 5 As shown, the bottom end of the plug 4 is provided with a stud 41, which is threadedly connected to the injection hole 35, so that the plug 4 can seal the top opening of the clay container 3.

[0036] Example 2

[0037] like Figure 1 As shown, a lightning protection building electrical grounding device includes a vertical grounding electrode 1, which is made of stainless steel pipe with a spiral copper strip 11 wound around its outer surface. The spiral copper strip 11 significantly increases the corrosion resistance of the vertical grounding electrode 1, thereby extending the service life of the entire grounding device. The inner cavity of the vertical grounding electrode 1 is filled with graphite-based conductive gel 15; the spiral copper strip 11 and graphite-based conductive gel 15 expand the discharge area, ensuring smooth discharge of lightning current. A horizontal grounding electrode 2 is connected to the bottom of the vertical grounding electrode 1. The horizontal grounding electrode 2 is a copper-clad steel stranded wire woven into a mesh structure; this structure of the horizontal grounding electrode 2 ensures smooth release of lightning current. A clay container 3 is fitted inside the portion of the vertical grounding electrode 1 buried below ground. The clay container 3 contains a resistance-reducing agent 33, and the filling end of the clay container 3 is sealed with a plug 4. The clay container 3, together with the resistance-reducing agent 33, effectively reduces the resistance of the grounding device. The resistance-reducing agent 33 consists of bentonite, NaCl, and carbon fiber, among other components.

[0038] like Figure 2 As shown, the vertical grounding electrode 1 has a flange 12 at its bottom end, and the flange 12 has multiple flange holes 13. The flange 12 and flange holes 13 facilitate the connection between the vertical grounding electrode 1 and the horizontal grounding electrode 2. The vertical grounding electrode 1 has a connecting pipe 14 at its top end, which facilitates the connection between the vertical grounding electrode 1 and the grounding port of the building.

[0039] like Figure 3As shown, the horizontal grounding electrode 2 has a pipe connector 21 at its top, and a connecting plate 22 at the top of the pipe connector 21. The connecting plate 22 has multiple connecting holes 23. Both the pipe connector 21 and the connecting plate 22 are made of titanium alloy, and the pipe connector 21, together with the connecting plate 22, facilitates the connection between the horizontal grounding electrode 2 and the vertical grounding electrode 1. The pipe connector 21 also has a socket 24 in the middle, which facilitates the installation of the graphite conductive post 5.

[0040] like Figure 4 As shown, the clay container 3 has multiple slow-release holes 31 on its side. The resistance-reducing agent 33 evenly coats the surface of the grounding body through the slow-release holes 31, forming an alkaline protective layer (bentonite pH≈9), which inhibits the electrochemical corrosion of the metal grounding body. The clay container 3 also has sleeve holes 32 at the top and bottom center for fitting onto the vertical grounding body 1. The top of the clay container 3 has an injection pipe 34, and the middle of the injection pipe 34 has an injection hole 35, which communicates with the inner cavity of the clay container 3. This structure facilitates the injection of the resistance-reducing agent 33 into the clay container 3 after it is fitted onto the vertical grounding body 1.

[0041] like Figure 5 As shown, the bottom end of the plug 4 is provided with a stud 41, which is threadedly connected to the injection hole 35, so that the plug 4 can seal the top opening of the clay container 3.

[0042] like Figure 1 and Figure 6 As shown, it also includes a graphite conductive post 5; the graphite conductive post 5 is disposed between the vertical grounding body 1 and the horizontal grounding body 2, with the bottom end of the graphite conductive post 5 inserted into the interior of the horizontal grounding body 2 and the top end abutting against the bottom end of the vertical grounding body 1. The vertical grounding body 1 and the horizontal grounding body 2 are connected by bolts, which press the graphite conductive post 5 tightly. The top of the graphite conductive post 5 is provided with a connecting plate 51, and the edge of the connecting plate 51 is provided with multiple through holes 52; the cooperation between the connecting plate 51 and the through holes 52 facilitates the cooperation between the graphite conductive post 5 and the flange 12 and the connecting plate 22, and facilitates the connection and fixation between the graphite conductive post 5, the vertical grounding body 1 and the horizontal grounding body 2 by bolts.

[0043] Example 3

[0044] like Figure 1As shown, a lightning protection building electrical grounding device includes a vertical grounding electrode 1, which is made of stainless steel pipe with a spiral copper strip 11 wound around its outer surface. The spiral copper strip 11 significantly increases the corrosion resistance of the vertical grounding electrode 1, thereby extending the service life of the entire grounding device. The inner cavity of the vertical grounding electrode 1 is filled with graphite-based conductive gel 15; the spiral copper strip 11 and graphite-based conductive gel 15 expand the discharge area, ensuring smooth discharge of lightning current. A horizontal grounding electrode 2 is connected to the bottom of the vertical grounding electrode 1. The horizontal grounding electrode 2 is a copper-clad steel stranded wire woven into a mesh structure; this structure of the horizontal grounding electrode 2 ensures smooth release of lightning current. A clay container 3 is fitted inside the portion of the vertical grounding electrode 1 buried below ground. The clay container 3 contains a resistance-reducing agent 33, and the filling end of the clay container 3 is sealed with a plug 4. The clay container 3, together with the resistance-reducing agent 33, effectively reduces the resistance of the grounding device. The resistance-reducing agent 33 consists of bentonite, NaCl, and carbon fiber, among other components.

[0045] like Figure 2 As shown, the vertical grounding electrode 1 has a flange 12 at its bottom end, and the flange 12 has multiple flange holes 13. The flange 12 and flange holes 13 facilitate the connection between the vertical grounding electrode 1 and the horizontal grounding electrode 2. The vertical grounding electrode 1 has a connecting pipe 14 at its top end, which facilitates the connection between the vertical grounding electrode 1 and the grounding port of the building.

[0046] like Figure 3 As shown, the horizontal grounding electrode 2 has a pipe connector 21 at its top, and a connecting plate 22 at the top of the pipe connector 21. The connecting plate 22 has multiple connecting holes 23. Both the pipe connector 21 and the connecting plate 22 are made of titanium alloy, and the pipe connector 21, together with the connecting plate 22, facilitates the connection between the horizontal grounding electrode 2 and the vertical grounding electrode 1. The pipe connector 21 also has a socket 24 in the middle, which facilitates the installation of the graphite conductive post 5.

[0047] like Figure 4 As shown, the clay container 3 has multiple slow-release holes 31 on its side. The resistance-reducing agent 33 evenly coats the surface of the grounding body through the slow-release holes 31, forming an alkaline protective layer (bentonite pH≈9), which inhibits the electrochemical corrosion of the metal grounding body. The clay container 3 also has sleeve holes 32 at the top and bottom center for fitting onto the vertical grounding body 1. The top of the clay container 3 has an injection pipe 34, and the middle of the injection pipe 34 has an injection hole 35, which communicates with the inner cavity of the clay container 3. This structure facilitates the injection of the resistance-reducing agent 33 into the clay container 3 after it is fitted onto the vertical grounding body 1.

[0048] like Figure 5 As shown, the bottom end of the plug 4 is provided with a stud 41, which is threadedly connected to the injection hole 35, so that the plug 4 can seal the top opening of the clay container 3.

[0049] like Figure 1 and Figure 6 As shown, it also includes a graphite conductive post 5; the graphite conductive post 5 is disposed between the vertical grounding body 1 and the horizontal grounding body 2, with the bottom end of the graphite conductive post 5 inserted into the interior of the horizontal grounding body 2 and the top end abutting against the bottom end of the vertical grounding body 1. The vertical grounding body 1 and the horizontal grounding body 2 are connected by bolts, which press the graphite conductive post 5 tightly. The top of the graphite conductive post 5 is provided with a connecting plate 51, and the edge of the connecting plate 51 is provided with multiple through holes 52; the cooperation between the connecting plate 51 and the through holes 52 facilitates the cooperation between the graphite conductive post 5 and the flange 12 and the connecting plate 22, and facilitates the connection and fixation between the graphite conductive post 5, the vertical grounding body 1 and the horizontal grounding body 2 by bolts.

[0050] like Figure 1 and Figure 7 As shown, it also includes a protective sleeve 6, which is fitted onto the outer side of the portion of the vertical grounding electrode 1 that is exposed above the ground. The protective sleeve 6 has a fixing plate 62 at both its top and bottom, and the fixing plate 62 has multiple fixing holes 63 along its edge; the fixing plate 62 and fixing holes 63 facilitate fixing the protective sleeve 6 to the ground with bolts. The protective sleeve 6 has multiple rubber buffer rings 61 on its side from top to bottom; the rubber buffer rings 61 facilitate buffering the force of impact on the protective sleeve 6.

[0051] Working principle: In use, select a grounding area outside the building and excavate a trench with a depth of 0.5m; connect the connecting plate 22 of the horizontal grounding electrode 2 to the flange 12 at the bottom of the vertical grounding electrode 1 with bolts to form a mesh structure; then lay the horizontal grounding electrode 2 at the bottom of the trench and insert the vertical grounding electrode 1 vertically into the soil, and then put a clay container 3 on the outside of the vertical grounding electrode 1. Then fill the clay container 3 with a resistance-reducing agent 33, bury it, backfill the soil and compact it; install a protective sleeve 6 on the ground surface, and connect the top of the vertical grounding electrode 1 to the building's lightning protection down conductor.

[0052] In summary, compared with existing technologies, this application, by setting up a vertical grounding electrode 1 and a horizontal grounding electrode 2, effectively increases the contact area with the soil, ensuring smooth discharge of lightning current and effectively preventing backflashover voltage. Furthermore, the vertical grounding electrode 1 is made of stainless steel pipe with copper strip wrapped around its exterior, and graphite-based conductive gel 15 is placed inside the stainless steel pipe; this copper-clad steel material is resistant to acid and alkali corrosion and has a long service life. Additionally, a clay container 3 is fitted around the part of the vertical grounding electrode 1 buried below ground, and the clay container 3 is filled with a resistance-reducing agent 33, which effectively reduces the resistance of the grounding electrode and facilitates smoother conductivity.

[0053] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lightning-protected building electrical grounding device comprising a vertical grounding body (1), characterized in that, The vertical grounding body (1) is made of stainless steel pipe, and a spiral copper band (11) is wound on the outer surface of the vertical grounding body (1), and the inner cavity of the vertical grounding body (1) is filled with graphite-based conductive gel (15); the bottom end of the vertical grounding body (1) is connected with a horizontal grounding body (2), the horizontal grounding body (2) is a copper-clad steel wire woven into a mesh structure; the part of the vertical grounding body (1) buried below the ground is sleeved with a pottery container (3), the inside of the pottery container (3) is provided with a resistance reducing agent (33), and the injection end of the pottery container (3) is provided with a plug (4).

2. The lightning protection building electrical grounding device according to claim 1, wherein, The bottom end of the vertical grounding body (1) is provided with a flange plate (12), a plurality of flange holes (13) are arranged on the flange plate (12), and the top end of the vertical grounding body (1) is provided with an adapter pipe (14).

3. The lightning protection building electrical grounding device according to claim 1, wherein, The top of the horizontal grounding body (2) is provided with a pipe joint (21), the top end of the pipe joint (21) is provided with a connecting disc (22), a plurality of connecting holes (23) are arranged on the connecting disc (22), and the middle part of the pipe joint (21) is provided with a jack (24).

4. The lightning protection building electrical grounding device according to claim 1, wherein, The side of the pottery container (3) is provided with a plurality of slow-release holes (31), and the middle part of the top end and the bottom end of the pottery container (3) is provided with a sleeve hole (32) for sleeving on the vertical grounding body (1); the top end of the pottery container (3) is provided with an injection pipe (34), the middle part of the injection pipe (34) is provided with an injection hole (35), and the injection hole (35) is communicated with the inner cavity of the pottery container (3).

5. The lightning protection building electrical grounding device according to claim 4, wherein, The bottom end of the plug (4) is provided with a threaded stud (41), and the threaded stud (41) is threadedly connected with the injection hole (35).

6. The lightning protection building electrical grounding device according to any one of claims 1-5, characterized in that, It also includes a graphite conductive column (5); the graphite conductive column (5) is arranged between the vertical grounding body (1) and the horizontal grounding body (2), the bottom end of the graphite conductive column (5) is inserted into the inside of the horizontal grounding body (2), and the top end abuts against the bottom end of the vertical grounding body (1), the vertical grounding body (1) and the horizontal grounding body (2) are connected by bolts, and the graphite conductive column (5) is pressed tightly.

7. The lightning protection building electrical grounding device according to claim 6, wherein, The top of the graphite conductive column (5) is provided with a connecting disc (51), and the edge of the connecting disc (51) is provided with a plurality of perforations (52).

8. The lightning protection building electrical grounding device according to any one of claims 1-5, characterized in that, It also includes a protective sleeve (6) which is sleeved on the outside of the part of the vertical grounding body (1) exposed to the ground.

9. The lightning protection building electrical grounding device according to claim 8, wherein, The top end and the bottom end of the protective sleeve (6) are provided with a fixing disc (62), and the edge of the fixing disc (62) is provided with a plurality of fixing holes (63); the side of the protective sleeve (6) is provided with a plurality of rubber buffer rings (61) from top to bottom.

Images