A graphite grounding pole

Abstract

This invention discloses a graphite grounding post, arranged in an installation hole drilled in the ground, comprising: a graphite frustum or graphite cone, a graphite tube, a metal connector, and a counterweight; the graphite frustum or graphite cone is coaxially and vertically arranged in the installation hole, with the smaller diameter end of the graphite frustum or graphite cone facing downwards; the larger diameter end of the graphite frustum or graphite cone is coaxially and integrally formed with a graphite tube, which is arranged in the installation hole; one end of the metal connector is fixed to the graphite frustum or graphite cone and the two are electrically connected, the other end of the metal connector is located inside the graphite tube, and the metal connector is electrically connected to an external grounding wire; the counterweight is arranged inside the graphite tube; the graphite tube is filled with asphalt, and both the metal connector and the counterweight are immersed in the asphalt. On the one hand, the graphite frustum or graphite cone and the graphite tube are corrosion resistant and can fully contact the ground; on the other hand, due to the presence of a counterweight, the counterweight can continuously press down on the graphite frustum or graphite cone, and the conical surface of the graphite frustum or graphite cone can always fully contact the ground, ensuring the grounding effect.

Description

Technical Field

[0001] This invention relates to the field of grounding equipment, and more specifically to a graphite grounding post. Background Technology

[0002] Grounding devices are crucial components for ensuring safe equipment operation and preventing lightning strikes and electrical leakage accidents. Their core function is to quickly conduct static electricity and fault current from the equipment casing or wiring to the ground, reducing grounding resistance and ensuring the safety of personnel and equipment. Graphite grounding modules, due to their corrosion resistance, excellent conductivity, and long service life, are widely used in various grounding scenarios, especially in areas with complex soil environments and high corrosiveness. However, existing graphite grounding posts still have many shortcomings in practical applications, making it difficult to meet the requirements for efficient, stable, and long-term grounding.

[0003] First, most existing graphite grounding modules are planar or simple columnar structures. Their installation involves excavating a foundation pit, placing the grounding module, and then backfilling the pit. The contact effect between the grounding module and the ground is also affected by the compaction of the backfill soil. After installation, it is difficult to ensure that it is in full contact with the ground, resulting in a large grounding resistance, poor grounding effect, and inability to quickly conduct current to the ground, which affects the safety protection performance of the equipment.

[0004] Secondly, the metal connectors in existing graphite grounding modules are mostly directly exposed or only simply wrapped for protection, making them prone to contact with water vapor and impurities in the soil. After long-term use, they are susceptible to corrosion and damage, leading to a decrease in conductivity or even failure, which significantly shortens the service life of the grounding post and increases the cost of later maintenance.

[0005] Furthermore, existing graphite grounding modules are relatively lightweight and are easily affected by soil settlement, external disturbances, etc. after installation, causing them to sway or shift, resulting in unstable contact between the graphite body and the ground and large fluctuations in grounding effect. In addition, some grounding modules are designed with all-graphite material, which can ensure conductivity, but the manufacturing cost is high and the economic efficiency is poor.

[0006] Therefore, how to provide a graphite grounding post that can overcome the above problems is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] In view of this, the present invention provides a graphite grounding post.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A graphite grounding post, arranged in an installation hole drilled in the ground, includes: a graphite frustum or graphite cone, a graphite tube, a metal connector, and a counterweight; the graphite frustum or graphite cone is coaxially and vertically arranged in the installation hole, with the smaller diameter end of the graphite frustum or graphite cone facing downwards; the larger diameter end of the graphite frustum or graphite cone is coaxially and integrally formed with the graphite tube, which is arranged in the installation hole; one end of the metal connector is fixed to the graphite frustum or graphite cone and electrically connected to it, and the other end of the metal connector is located inside the graphite tube, and the metal connector is electrically connected to an external grounding wire; the counterweight is arranged inside the graphite tube; the graphite tube is filled with asphalt, and both the metal connector and the counterweight are immersed in the asphalt.

[0010] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a graphite grounding post. By designing a graphite frustum or graphite cone with the small-diameter end facing downwards, the graphite frustum or graphite cone is ensured to have full contact with the ground, thereby improving the grounding effect. By designing a graphite tube, the graphite tube can have full contact with the ground and be electrically conductive. In addition, the graphite tube can also protect the metal connectors, preventing the metal connectors from contacting external impurities or moisture. By designing the metal connectors, the external grounding wire can be reliably electrically connected to the graphite frustum or graphite cone and the graphite tube. By designing a counterweight, the counterweight can increase the weight of the entire graphite grounding post, thereby ensuring that the conical surface of the graphite frustum or graphite cone is always in close contact with the bottom of the mounting hole, ensuring the stability of the grounding. By filling the graphite tube with asphalt, the metal connectors inside the graphite tube will not come into contact with moisture, thereby avoiding corrosion damage.

[0011] Preferably, the outer diameter of the large-diameter end of the graphite frustum or the graphite cone is the same as the outer diameter of the graphite tube. The graphite frustum or the graphite cone and the graphite tube are easily integrally formed, the graphite tube can make good contact with the ground and conduct electricity, and it is also convenient for lowering the graphite tube.

[0012] Preferably, the graphite frustum or graphite cone has a hole at its small-diameter end and a positioning rod is inserted therein. The positioning rod is coaxially arranged with the graphite frustum or graphite cone, and the end of the positioning rod away from the graphite frustum or graphite cone is sharp. The positioning rod can penetrate into the ground, thereby ensuring that the graphite frustum or graphite cone is stably arranged in the mounting hole. A stable annular gap can be formed between the outer wall of the graphite tube and the inner wall of the mounting hole, which is beneficial for filling the annular gap with a drag-reducing agent later.

[0013] Preferably, the metal connector includes a metal fixing plate, a metal connecting rod, and a metal terminal block. The metal fixing plate is fixed inside the graphite frustum or the graphite cone, and the surface of the metal fixing plate is perpendicular to the axis of the graphite frustum or the graphite cone. One end of the metal connecting rod is located inside the graphite frustum or the graphite cone and fixed to the metal fixing plate, while the other end of the metal connecting rod is arranged inside the graphite tube, coaxially with the graphite tube. The metal terminal block is located inside the graphite tube, fixed to and electrically connected to the end of the metal connecting rod away from the metal fixing plate, and fixed to and electrically connected to an external grounding wire. The external grounding wire can be effectively electrically connected to the graphite frustum or the graphite cone and the graphite tube through the metal connector.

[0014] Preferably, the counterweight is coaxially arranged inside the graphite tube, and a clearance hole is coaxially formed on the counterweight, with the metal connecting rod disposed in the clearance hole. This design facilitates the installation and manufacturing of the counterweight without affecting the arrangement of the metal connecting rod.

[0015] Preferably, the inner wall of the graphite tube is integrally formed with multiple limiting strips, which are evenly arranged circumferentially along the graphite tube, and the length direction of the limiting strips is the same as the length direction of the graphite tube. The outer wall of the counterweight is provided with multiple limiting grooves penetrating its two end walls, and each of the multiple limiting strips is embedded in the multiple limiting grooves. This design ensures that there is no relative rotation between the counterweight and the graphite tube. At the same time, there is a gap between the limiting strips and the limiting grooves, so that when asphalt is filled into the graphite tube, the asphalt can also enter the gap, further ensuring that the counterweight will not swing freely inside the graphite tube.

[0016] Preferably, a lifting hole is provided on the side wall of the graphite tube, and the lifting hole is located above the metal wiring plate. This design facilitates the hoisting of the graphite tube.

[0017] Preferably, the outer wall of the graphite tube is integrally formed with multiple fins, the surface of which is parallel to the axis of the graphite tube, and the multiple fins are evenly arranged along the circumference of the graphite tube. This design can increase the contact area between the graphite tube and the ground, thereby ensuring the grounding effect.

[0018] Preferably, a drag-reducing agent is filled between the wall of the mounting hole and the outer wall of the graphite tube. This design prevents the graphite tube from moving around freely within the mounting hole and ensures that the outer wall of the graphite tube is in full contact with the ground. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 An integral isometric projection of a graphite grounding post Figure 1 ;

[0021] Figure 2 An integral isometric projection of a graphite grounding post Figure 2 ;

[0022] Figure 3 This is an exploded isometric view of a graphite grounding post;

[0023] Figure 4 This is an isometric view of a metal connector in a graphite grounding post;

[0024] Figure 5 This is a schematic diagram of the installation layout of a graphite grounding post.

[0025] In the diagram:

[0026] 1. Mounting hole; 2. Graphite frustum or graphite cone; 3. Graphite tube; 30. Limiting strip; 31. Lifting hole; 32. Fin plate; 4. Metal connector; 40. Metal fixing plate; 41. Metal connecting rod; 42. Metal terminal block; 5. Counterweight; 50. Limiting groove; 51. Clearance hole; 6. Positioning rod. Detailed Implementation

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] This invention discloses a graphite grounding post, which is designed with a graphite frustum or graphite cone 2, with the small diameter end of the graphite frustum or graphite cone 2 arranged vertically downward, so that the graphite frustum or graphite cone 2 is in full contact with the ground, thereby improving the grounding effect;

[0029] By designing the graphite tube 3, it can fully contact the ground and conduct electricity. In addition, the graphite tube 3 can also protect the metal connector 4, preventing the metal connector 4 from contacting external impurities or moisture.

[0030] By designing the metal connector 4, the external grounding wire can be reliably electrically connected to the graphite frustum or graphite cone 2 and the graphite tube 3.

[0031] By designing counterweight 5, on the one hand, counterweight 5 can increase the weight of the entire graphite grounding post, thereby ensuring that the conical surface of the graphite frustum or graphite cone 2 is always in close contact with the bottom of the mounting hole 1, ensuring the stability of grounding, and the graphite tube 3 will not shake randomly; on the other hand, counterweight 5 is not made of graphite, which can increase the weight of the entire graphite grounding post while also saving costs.

[0032] By designing the lifting hole 31, this design facilitates the disassembly and lifting of the graphite tube 3;

[0033] By filling the graphite tube 3 with asphalt, the metal connector 4 inside the graphite tube 3 will not come into contact with moisture, thus avoiding corrosion and damage.

[0034] By designing the metal fixing plate 40, on the one hand, its contact area with the graphite frustum or graphite cone 2 can be increased, thereby improving the conductivity. On the other hand, the metal connecting rod 41 can be reliably connected and fixed to the graphite frustum or graphite cone 2, and can be reliably connected to the external grounding wire by relying on the metal terminal plate 42.

[0035] By designing the positioning rod 6, the graphite frustum or graphite cone 2 can be reliably and stably arranged in the mounting hole 1. A stable annular gap can be formed between the outer wall of the graphite tube 3 and the inner wall of the mounting hole 1, which is beneficial for filling the annular gap with drag-reducing agent later.

[0036] By designing the limiting strip 30 and the limiting groove 50, this design ensures that there will be no relative rotation between the counterweight 5 and the graphite tube 3. At the same time, there is a gap between the limiting strip 30 and the limiting groove 50, so that when asphalt is filled into the graphite tube 3, the asphalt can also enter the gap, further ensuring that the counterweight 5 will not shake randomly inside the graphite tube 3.

[0037] Example

[0038] See appendix Figure 1-5 This is a schematic diagram of the overall and partial structure of one embodiment of the present invention. The present invention specifically discloses a graphite grounding post, which is arranged in an installation hole 1 drilled in the ground. The cross-sectional shape of the installation hole 1 is circular.

[0039] The graphite grounding post includes: a graphite frustum or graphite cone 2, a graphite tube 3, a metal connector 4, and a counterweight 5;

[0040] The graphite frustum or graphite cone 2 is coaxially and vertically arranged in the mounting hole 1, with the smaller diameter end of the graphite frustum or graphite cone 2 facing downwards. After the mounting hole 1 is drilled, a certain amount of drag-reducing agent is pre-filled into the mounting hole 1, and then the graphite frustum or graphite cone 2 is lowered to ensure that the drag-reducing agent can fully contact the conical surface of the graphite frustum or graphite cone 2.

[0041] A graphite tube 3 is integrally formed on the bottom surface of a graphite frustum or graphite cone 2. The outer contour of the cross section of the graphite tube 3 is circular. The graphite tube 3 is arranged in the mounting hole 1, and the upper end of the graphite tube 3 is located below the ground.

[0042] One end of the metal connector 4 is fixed to the graphite frustum or graphite cone 2 and the two are electrically connected. The other end of the metal connector 4 is located inside the graphite tube 3. The metal connector 4 is electrically connected to the external grounding wire. The graphite frustum or graphite cone 2 and the graphite tube 3 can fully contact the ground and be electrically conductive.

[0043] The counterweight 5 is placed inside the graphite tube 3. After the graphite frustum or graphite cone 2 and the graphite tube 3 are arranged, due to the weight of the counterweight 5, it can continuously press down on the graphite frustum or graphite cone 2, ensuring that the conical surface of the graphite frustum or graphite cone 2 is always in close contact with the resistance-reducing agent at the bottom of the mounting hole 1, thus ensuring the grounding effect. At the same time, the counterweight 5 can ensure that the graphite frustum or graphite cone 2 and the graphite tube 3 will not move arbitrarily up, down, left, or right.

[0044] The graphite tube 3 is filled with asphalt, and the metal connector 4 and the counterweight 5 are both immersed in the asphalt. After the external grounding wire is connected to the metal connector 4, molten asphalt is filled into the graphite tube 3, so that the metal connector 4 and the end of the external grounding wire connected to it are both immersed in the asphalt. After the asphalt cools and solidifies, external moisture and impurities will not come into contact with the metal connector 4, thereby avoiding corrosion and damage to the metal connector 4.

[0045] The bottom diameter of the graphite frustum or graphite cone 2 is the same as the outer diameter of the graphite tube 3. This design facilitates the integral molding of the graphite frustum or graphite cone 2 and the graphite tube 3, improves the contact effect between the graphite tube 3 and the ground, and is also conducive to the lowering of the graphite tube 3.

[0046] A positioning rod 6 is inserted into the small-diameter end of the graphite frustum or graphite cone 2. The positioning rod 6 is coaxially arranged with the graphite frustum or graphite cone 2. The end of the positioning rod 6 away from the graphite frustum or graphite cone 2 is sharp, and the sharp end of the positioning rod 6 can penetrate into the bottom of the mounting hole 1, thereby ensuring that the graphite frustum or graphite cone 2 is stably arranged in the mounting hole 1. A stable annular gap can be formed between the outer wall of the graphite tube 3 and the inner wall of the mounting hole 1, which is beneficial for filling the annular gap with a drag-reducing agent later. The positioning rod 6 can be made of graphite or stainless steel.

[0047] Metal connector 4 includes a metal fixing plate 40, a metal connecting rod 41, and a metal terminal block 42.

[0048] The metal fixing plate 40 is a circular plate and is coaxially embedded and fixed in the graphite frustum or graphite cone 2. The surface of the metal fixing plate 40 is perpendicular to the axis of the graphite frustum or graphite cone 2.

[0049] One end of the metal connecting rod 41 is located inside the graphite frustum or graphite cone 2 and fixed to the metal fixing plate 40. The other end of the metal connecting rod 41 is arranged inside the graphite tube 3. The metal connecting rod 41 and the graphite tube 3 are arranged coaxially.

[0050] The metal terminal block 42 is located inside the graphite tube 3. The metal terminal block 42 is fixed and electrically connected to the end of the metal connecting rod 41 away from the metal fixing plate 40. The metal terminal block 42 is fixed and electrically connected to the external grounding wire.

[0051] Because of the metal fixing plate 40, it ensures that the metal connecting rod 41 will not easily separate from the graphite frustum or graphite cone 2, and improves the electrical connection effect between the metal connecting rod 41 and the graphite frustum or graphite cone 2.

[0052] The counterweight 5 is cylindrical and is made of cast concrete, making it corrosion resistant. The counterweight 5 is coaxially arranged inside the graphite tube 3, and a clearance hole 51 is coaxially opened on the counterweight 5. The metal connecting rod 41 is arranged in the clearance hole 51. The counterweight 5 can increase the weight of the entire graphite grounding post, ensuring that the conical surface of the graphite frustum or graphite cone 2 can always be in close contact with the bottom of the mounting hole 1.

[0053] The inner wall of the graphite tube 3 is integrally formed with multiple limiting strips 30, which are evenly arranged along the circumference of the graphite tube 3, and the length direction of the limiting strips 30 is the same as that of the graphite tube 3. The outer wall of the counterweight 5 is provided with multiple limiting grooves 50 penetrating its two end walls, and the multiple limiting strips 30 are each embedded in the multiple limiting grooves 50. This design ensures that there is no relative rotation between the counterweight 5 and the graphite tube 3. At the same time, there is a gap between the limiting strips 30 and the limiting grooves 50, so that when asphalt is filled into the graphite tube 3, the asphalt can also enter the gap, further ensuring that the counterweight 5 will not shake arbitrarily inside the graphite tube 3.

[0054] The graphite tube 3 has two lifting holes 31 at its upper end, with the axis of the graphite tube 3 arranged in the middle between them. The lifting holes 31 are located above the metal terminal block 42, and asphalt is arranged below the lifting holes 31. When it is necessary to disassemble or assemble the graphite grounding post, the lifting rope can be connected to the lifting holes 31 to lift or lower the graphite tube 3 and the graphite frustum or graphite cone 2.

[0055] The outer wall of the graphite tube 3 is integrally formed with multiple fins 32. The surface of the fins 32 is parallel to the axis of the graphite tube 3. The multiple fins 32 are evenly arranged along the circumference of the graphite tube 3. The fins 32 can increase the contact area between the graphite tube 3 and the ground, thereby improving the conductivity.

[0056] The space between the wall of the mounting hole 1 and the outer wall of the graphite tube 3 is filled with a drag-reducing agent. This design can improve the contact effect between the graphite tube 3 and the ground, while also ensuring that the graphite tube 3 will not shake at will.

[0057] During installation, a mounting hole 1 is pre-drilled in the designated area of ​​the ground, and a certain amount of resistance-reducing agent is pre-placed in the mounting hole 1. Then, the graphite tube 3, which has already been wired and filled with asphalt, is lifted using hoisting tools. The graphite tube 3 is then lowered into the mounting hole 1, and resistance-reducing agent is filled between the wall of the mounting hole 1 and the outer wall of the graphite tube 3. Finally, the mounting hole 1 is backfilled.

[0058] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0059] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A graphite grounding post, arranged in an installation hole drilled in the ground, characterized in that, The device includes: a graphite frustum or graphite cone, a graphite tube, a metal connector, and a counterweight; the graphite frustum or graphite cone is coaxially and vertically arranged in the mounting hole, with the smaller diameter end of the graphite frustum or graphite cone facing downwards; the larger diameter end of the graphite frustum or graphite cone is coaxially and integrally formed with the graphite tube, which is arranged in the mounting hole; one end of the metal connector is fixed to the graphite frustum or graphite cone and electrically connected to it, and the other end of the metal connector is located inside the graphite tube, and the metal connector is electrically connected to an external grounding wire; the counterweight is arranged inside the graphite tube; the graphite tube is filled with asphalt, and both the metal connector and the counterweight are immersed in the asphalt.

2. A graphite grounding post according to claim 1, characterized in that, The outer diameter of the large-diameter end of the graphite frustum or the graphite cone is the same as the outer diameter of the graphite tube.

3. A graphite grounding post according to claim 1, characterized in that, The graphite frustum or the graphite cone has a hole at its small-diameter end and a positioning rod is inserted therein. The positioning rod is arranged coaxially with the graphite frustum or the graphite cone, and the end of the positioning rod away from the graphite frustum or the graphite cone is sharp.

4. A graphite grounding post according to claim 1, characterized in that, The metal connector includes a metal fixing plate, a metal connecting rod, and a metal terminal block. The metal fixing plate is fixed inside the graphite frustum or the graphite cone, and the surface of the metal fixing plate is perpendicular to the axis of the graphite frustum or the graphite cone. One end of the metal connecting rod is located inside the graphite frustum or the graphite cone and is fixed to the metal fixing plate. The other end of the metal connecting rod is arranged inside the graphite tube, and the metal connecting rod is coaxially arranged with the graphite tube. The metal terminal block is located inside the graphite tube, and the metal terminal block is fixed and electrically connected to the end of the metal connecting rod away from the metal fixing plate. The metal terminal block is fixed and electrically connected to an external grounding wire.

5. A graphite grounding post according to claim 4, characterized in that, The counterweight is cylindrical and coaxially arranged inside the graphite tube. A clearance hole is coaxially opened on the counterweight, and the metal connecting rod is arranged in the clearance hole.

6. A graphite grounding post according to claim 5, characterized in that, The inner wall of the graphite tube is integrally formed with multiple limiting strips, which are evenly arranged along the circumference of the graphite tube. The length direction of the limiting strips is the same as the length direction of the graphite tube. The outer wall of the counterweight is provided with multiple limiting grooves penetrating its two end walls, and each of the multiple limiting strips is embedded in the multiple limiting grooves.

7. A graphite grounding post according to claim 4, characterized in that, The graphite tube has a lifting hole at its upper end, which is located above the metal terminal block.

8. A graphite grounding post according to claim 1, characterized in that, The outer wall of the graphite tube is integrally formed with multiple fins, the surface of the fins is parallel to the axis of the graphite tube, and the multiple fins are evenly arranged along the circumference of the graphite tube.

9. A graphite grounding post according to claim 1, characterized in that, The space between the wall of the mounting hole and the outer wall of the graphite tube is filled with a drag-reducing agent.

Images