A flexible graphite lightning protection grounding body down conductor device and lightning protection grounding body

Abstract

The present application relates to the field of electric power lightning protection equipment, and specifically to a flexible graphite lightning protection grounding body down conductor device and a lightning protection grounding body. This device includes a metal down conductor, a graphite grounding strip and a connecting portion. The graphite grounding strip includes a grounding strip body and a connecting end. The grounding strip body is connected to the connecting end, the first end of the connecting end is connected to the grounding strip body, and the second end is connected to the metal down conductor, and the connecting portion includes an outer shell and a flexible extruded core block. The outer shell is a hollow structure, and the flexible extruded core block is located in the hollow interior of the outer shell. The above-mentioned flexible graphite lightning protection grounding body down conductor device can achieve an effective and stable connection between the metal down conductor and the graphite grounding body by means of the flexible material of the flexible extruded core block and the simple plugging of the metal down conductor and the graphite grounding body at the connecting portion, without the need to use bolts and other structures that are easy to cause extrusion of the metal down conductor plate body and the coating on the plate body, thereby ensuring the anti-corrosion performance of the grounding device during use.

Description

Technical Field

[0001] The present application relates to the field of electric power lightning protection equipment, and in particular to a flexible graphite lightning protection grounding body down conductor device and a lightning protection grounding body. Background Art

[0002] Graphite flexible grounding material is a new type of grounding material that uses expanded graphite as a base material and is composited with other materials. Graphite composite grounding body provides good conductivity and has good corrosion resistance, tensile strength, torsion resistance and bending resistance. It is chemically stable at room temperature and has significant anti-corrosion properties compared to conventional metal grounding materials. Since the graphite grounding body is a flexible material, it can ensure effective adhesion with soil colloids under the action of external forces, reduce the influence of the air gap between the grounding body and the soil on the grounding resistance, and the effective dispersion area of ​​the graphite flexible grounding material is larger than that of steel-type grounding materials, which can significantly reduce the impact grounding resistance; in addition, the graphite grounding body is convenient for transportation and construction, which can effectively prevent the grounding body from being stolen and damaged by human beings, and the production cost is controllable. In addition, the corrosion resistance of the graphite grounding body can achieve a long-term maintenance-free effect, which greatly saves the waste of metal materials and the manpower and resource costs consumed for maintenance; at the same time, it also reduces the environmental pollution problems caused by the production of metal materials, thereby bringing huge social and environmental benefits.

[0003] At present, connecting the metal down conductor to the graphite horizontal grounding body is a more commonly used way to implement the flexible graphite composite grounding device. The metal down conductor and the graphite horizontal grounding body are usually crimped together by bolts. During crimping, the flexible graphite should be wrapped with at least 2 layers of zinc to play a role in cathodic protection. The bolts supporting the connecting plate are made of stainless steel. The upper and lower plates of the hot-dip galvanized connecting plate both adopt an arc groove structure. The size of the arc groove should match the flexible graphite, and the gap between the upper and lower plates should be minimized. However, when the bolts are crimped, it is easy to cause the galvanized layer of the connecting plate to be damaged. At the same time, its surface is not smooth enough, and the asphalt anti-corrosion effect is average. Summary of the invention

[0004] In view of this, the present application provides a flexible graphite lightning protection grounding down conductor device and a lightning protection grounding body, which solves or improves the technical problems in the related technology that the conventional connection method between the graphite grounding body and the metal down conductor is prone to damage to the connecting plate coating and the anti-corrosion effect cannot be guaranteed.

[0005] According to the first aspect of the present application, an embodiment of the present application provides a flexible graphite lightning protection grounding body down conductor device, comprising: a metal down conductor and a graphite grounding strip, and also comprising: a connecting portion, wherein the connecting portion is used to connect the metal down conductor and the graphite grounding strip; wherein the graphite grounding strip comprises: a grounding strip body; a connecting end, wherein the first end of the connecting end is connected to the grounding strip body, and the second end of the connecting end is connected to the metal down conductor, and the connecting end is arranged in the connecting portion; the connecting portion comprises: an outer shell, wherein the outer shell is a hollow structure inside; a flexible extruded core block located inside the outer shell, wherein the connecting end is inserted into the flexible extruded core block after being connected to the metal down conductor, and the connecting end is tightly connected to the metal down conductor under the pressure of the flexible extruded core block.

[0006] In a possible implementation of the present application, the connecting end includes: an upper tongue, one end of which is connected to the grounding strip body, and the other end of which is used to be tightly connected to the metal down conductor; a lower tongue, one end of which is connected to the grounding strip body, and the other end of which is used to be tightly connected to the metal down conductor; wherein the metal down conductor is located between the upper tongue and the lower tongue.

[0007] In a possible implementation of the present application, the lengths of the upper tongue portion and the lower tongue portion are equal, and the lengths of the upper tongue portion and the lower tongue portion are 0.5 to 0.75 times the length of the flexible extruded core block.

[0008] In a possible implementation of the present application, the upper tongue and / or the lower tongue is coated with a zinc skin layer.

[0009] In a possible implementation of the present application, a central through hole is opened inside the flexible extruded core block, and the upper tongue, the lower tongue and the metal down conductor are simultaneously inserted into the central through hole; the central through hole includes: a large hole portion, the large hole portion is arranged close to the first end of the outer shell, and the aperture of the large hole portion is larger than the thickness of the metal down conductor; a shrinkage hole portion communicating with the large hole portion, the aperture of the shrinkage hole portion is smaller than the aperture of the large hole portion; a small hole portion communicating with the shrinkage hole portion, the small hole portion is arranged close to the second end of the outer shell, and the aperture of the small hole portion is smaller than the thickness of the metal down conductor.

[0010] In a possible implementation of the present application, the connecting portion also includes: a first anti-detachment plug, which is arranged at the first end of the outer shell, and the first anti-detachment plug is provided with a through hole for passing the graphite grounding belt; a second anti-detachment plug, which is arranged at the second end of the outer shell, and the second anti-detachment plug is provided with a through hole for passing the graphite grounding belt.

[0011] In a possible implementation of the present application, the outer shell is made of stainless steel and / or the flexible extruded core block is made of silver or copper.

[0012] In a possible implementation of the present application, the outer surface of the outer shell is covered with a heat shrinkable tube.

[0013] In a possible implementation of the present application, the end of the metal down conductor connected to the graphite grounding strip is provided with a knurling pattern.

[0014] According to the second aspect of the present application, an embodiment of the present application further provides a lightning protection grounding body. The lightning protection grounding body provided by the present application includes: the flexible graphite lightning protection grounding body down conductor device described in any one of the above items.

[0015] The flexible graphite lightning protection grounding body down conductor device and lightning protection grounding body provided in the present application include: a metal down conductor, a graphite grounding strip and a connecting portion. The metal down conductor and the graphite grounding strip are connected through the connecting portion, thereby forming a flexible graphite composite grounding device. The graphite grounding strip may further include: a grounding strip body and a connecting end. The grounding strip body is connected to the connecting end, the first end of the connecting end is connected to the grounding strip body, the second end of the connecting end is connected to the metal down conductor, and the connecting end is arranged in the connecting portion, so that the metal down conductor connected thereto is fixed in the connecting portion at the same time, and the connection between the metal down conductor and the graphite grounding strip is achieved by means of the connection between the connecting end and the grounding strip body. In addition, the connecting portion may further include: an outer shell and a flexible extruded core block. The above-mentioned outer shell is a hollow structure, which serves as the outer shell and bearing component of the connection part; the flexible extruded core block is located in the hollow interior of the outer shell, and the above-mentioned connection end is inserted into this flexible extruded core block after being connected to the metal down conductor. By utilizing the deformable characteristics of the material of the flexible extruded core block itself, the flexible extruded core block generates deformation pressure on the metal down conductor and the connection end connected to each other, thereby making the connection between the connection end and the metal down conductor more tightly fitted, further improving the connection stability between the two, thereby achieving the effect of stably connecting the metal down conductor and the graphite grounding body. The above-mentioned flexible graphite lightning protection grounding body down conductor device can achieve an effective and stable connection between the metal down conductor and the graphite grounding body by means of the flexible material of the flexible extruded core block and the simple plugging of the metal down conductor and the graphite grounding body at the connection part, without the need to use bolts and other structures that are easy to squeeze the metal down conductor plate body and the coating on the plate body, thereby ensuring the anti-corrosion performance of the grounding device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are constructed to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0017] Figure 1 Shown is a schematic structural diagram of a flexible graphite lightning protection grounding body down conductor device provided in one embodiment of the present application.

[0018] Figure 2 Shown is a schematic structural diagram of a graphite grounding strip in a flexible graphite lightning protection grounding body down conductor device provided in another embodiment of the present application.

[0019] Figure 3 Shown is a schematic structural diagram of a connection portion in a flexible graphite lightning protection grounding body down conductor device provided in another embodiment of the present application.

[0020] Figure 4 Shown is a structural schematic diagram of a flexible graphite lightning protection grounding body down conductor device provided in another embodiment of the present application.

[0021] Description of reference numerals:

[0022] 1. Metal down conductor;

[0023] 2. Graphite grounding strip;

[0024] 2-0, grounding strap body;

[0025] 2-1. Upper tongue;

[0026] 2-2, lower tongue;

[0027] 3. Connecting part;

[0028] 3-1, outer shell;

[0029] 3-2, flexible extruded core block;

[0030] 3-31, first anti-slip plug; 3-32, second anti-slip plug;

[0031] 3-4, center through hole;

[0032] 3-5, large hole;

[0033] 3-6, shrinkage cavity;

[0034] 3-7, small hole part. DETAILED DESCRIPTION

[0035] In the description of the application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise clearly and specifically limited. In the embodiment of the present application, all directional indications (such as up, down, left, right, front, back, top, bottom ...) are only used to explain the relative position relationship, motion conditions, etc. between the components under a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their deformations are intended to cover non-exclusive inclusions. For example, the process, method, system, product or equipment comprising a series of steps or units are not limited to the steps or units listed, but optionally also include the steps or units not listed, or optionally also include other steps or units inherent to these processes, methods, products or equipment.

[0036] In addition, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0037] Application Overview

[0038] The applicant further analyzed the reasons why the conventional connection method between the graphite grounding body and the metal down conductor in the related art easily causes damage to the coating of the connecting plate and the anti-corrosion effect cannot be guaranteed, and found that:

[0039] Graphite flexible grounding material is a new type of grounding material that uses expanded graphite as a base material and is composited with other materials. The graphite composite grounding body provides good conductivity and has good corrosion resistance, tensile strength, torsion resistance and bending resistance. It is chemically stable at room temperature and has significant anti-corrosion properties compared to conventional metal grounding materials. Since the graphite grounding body 2 is a flexible material, it can ensure effective adhesion with the soil colloid under the action of external force, reduce the influence of the air gap between the grounding body and the soil on the grounding resistance, and the effective dispersion area of ​​the graphite flexible grounding material is larger than that of the steel grounding material, which can significantly reduce the impact grounding resistance; in addition, the graphite grounding body 2 is convenient for transportation and construction, and can effectively prevent the grounding body from being stolen and damaged by human beings, and the production cost is controllable. In addition, the corrosion resistance of the graphite grounding body 2 can achieve a long-term maintenance-free effect, greatly saving the waste of metal materials and the manpower and resource costs consumed for maintenance; at the same time, it also reduces the environmental pollution problems caused by the production of metal materials, thereby bringing huge social and environmental benefits.

[0040] At present, connecting the metal down conductor 1 with the graphite horizontal grounding body is a more commonly used way to implement the flexible graphite composite grounding device. The metal down conductor 1 and the graphite horizontal grounding body are usually crimped together by bolts. During crimping, the flexible graphite should be wrapped with at least 2 layers of zinc to play a role in cathodic protection. The bolts supporting the connecting plate are made of stainless steel. The upper and lower plates of the hot-dip galvanized connecting plate both adopt an arc groove structure. The size of the arc groove should match the flexible graphite, and the gap between the upper and lower plates should be minimized. However, when the bolts are crimped, the galvanized layer of the connecting plate is easily damaged. At the same time, its surface is not smooth enough, and the asphalt anti-corrosion effect is average.

[0041] Based on the above content, the present application provides a flexible graphite lightning protection grounding body down conductor device and a lightning protection grounding body. Among them, this flexible graphite lightning protection grounding body down conductor device includes: the following components: a metal down conductor 1, a graphite grounding strip 2 and a connecting portion 3. Among them, the metal down conductor 1 and the graphite grounding strip 2 are connected through the connecting portion 3, thereby forming a flexible graphite composite grounding device. The graphite grounding strip 2 may further include: a grounding strip body 2-0 and a connecting end. The grounding strip body 2-0 is connected to the connecting end, the first end of the connecting end is connected to the grounding strip body 2-0, the second end of the connecting end is connected to the metal down conductor 1, and the connecting end is arranged in the connecting portion 3, so that the metal down conductor 1 connected thereto is fixed in the connecting portion 3 at the same time, and the connection between the connecting end and the grounding strip body 2-0 is realized to realize the connection between the metal down conductor 1 and the graphite grounding strip 2. In addition, the connecting portion 3 may further include: an outer shell 3-1 and a flexible extruded core block 3-2. The above-mentioned outer shell 3-1 is a hollow structure inside, which serves as the outer shell and bearing component of the connecting part 3; the flexible extruded core block 3-2 is located in the hollow interior of the outer shell 3-1, and the above-mentioned connecting end is inserted into this flexible extruded core block 3-2 after being connected to the metal down conductor 1. By utilizing the deformable characteristics of the material of the flexible extruded core block 3-2 itself, the flexible extruded core block 3-2 generates deformation pressure on the metal down conductor 1 and the connecting end connected to each other, thereby making the connection between the connecting end and the metal down conductor 1 more closely fit, further improving the connection stability between the two, thereby achieving the effect of stably connecting the metal down conductor 1 and the graphite grounding body 2. The above-mentioned flexible graphite lightning protection grounding electrode down conductor device can realize effective and stable connection between the metal down conductor 1 and the graphite grounding electrode 2 by means of the flexible material of the flexible extruded core block 3-2 and the simple plugging of the metal down conductor 1 and the graphite grounding electrode 2 at the connecting part 3. There is no need to use bolts or other structures that may easily squeeze the plate body of the metal down conductor 1 and the coating on the plate body, thereby ensuring the anti-corrosion performance of the grounding device during use.

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] Figure 1 The figure shows a schematic structural diagram of a flexible graphite lightning protection grounding body down conductor device provided in one embodiment of the present application. Figure 2 FIG. 2 is a schematic diagram of the structure of a graphite grounding strip 2 in a flexible graphite lightning protection grounding body down conductor device provided by another embodiment of the present application. Figure 1 and Figure 2 As shown, the flexible graphite lightning protection grounding body down conductor device provided in the present application may specifically include the following components: a metal down conductor 1, a graphite grounding strip 2 and a connecting portion 3.

[0044] The metal down conductor 1 is connected to the graphite grounding strip 2 via the connecting portion 3, thereby forming a flexible graphite composite grounding device.

[0045] The graphite grounding strap 2 may further include: a grounding strap body 2 - 0 and a connection end.

[0046] The grounding strip body 2-0 is connected to the connecting end, the first end of the connecting end is connected to the grounding strip body 2-0, the second end of the connecting end is connected to the metal down conductor 1, and the connecting end is arranged in the connecting part 3, so that the metal down conductor 1 connected thereto is also fixed in the connecting part 3, and the connection between the connecting end and the grounding strip body 2-0 is used to realize the connection between the metal down conductor 1 and the graphite grounding strip 2.

[0047] besides, Figure 3 FIG. 1 is a schematic diagram of the structure of a connection portion in a flexible graphite lightning protection grounding body down conductor device provided by another embodiment of the present application. Figure 3 As shown, the connecting portion 3 may further include: an outer shell 3 - 1 and a flexible extruded core block 3 - 2 .

[0048] The above-mentioned outer shell 3-1 is a hollow structure inside, which serves as the outer shell and bearing component of the connecting part 3; the flexible extruded core block 3-2 is located in the hollow interior of the outer shell 3-1, and the above-mentioned connecting end is inserted into this flexible extruded core block 3-2 after being connected to the metal down conductor 1. By utilizing the deformable characteristics of the material of the flexible extruded core block 3-2 itself, the flexible extruded core block 3-2 generates deformation pressure on the metal down conductor 1 and the connecting end connected to each other, thereby making the connection between the connecting end and the metal down conductor 1 more closely fit, further improving the connection stability between the two, thereby achieving the effect of stably connecting the metal down conductor 1 and the graphite grounding body 2.

[0049] The above-mentioned flexible graphite lightning protection grounding electrode down conductor device can realize effective and stable connection between the metal down conductor 1 and the graphite grounding electrode 2 by means of the flexible material of the flexible extruded core block 3-2 and the simple plugging of the metal down conductor 1 and the graphite grounding electrode 2 at the connecting part 3. There is no need to use bolts or other structures that may easily squeeze the plate body of the metal down conductor 1 and the coating on the plate body, thereby ensuring the anti-corrosion performance of the grounding device during use.

[0050] In a possible implementation of the present application, Figure 1 and Figure 2 As shown, the connection end in the flexible graphite lightning protection grounding body down conductor device provided by the present application may further include: an upper tongue portion 2-1 and a lower tongue portion 2-2.

[0051] The metal down conductor 1 is a plate-like structure, which is used to connect with the transmission tower to improve the convenience of connection.

[0052] One end of the upper tongue 2 - 1 is connected to the grounding strip body 2 - 0 , and the other end of the upper tongue 2 - 1 is used to be tightly connected to one side of the metal down conductor 1 .

[0053] One end of the lower tongue 2 - 2 is connected to the grounding strip body 2 - 0 , and the other end of the lower tongue 2 - 2 is used to be tightly connected to the other side of the metal down conductor 1 .

[0054] As shown in the figure, when the metal down conductor 1 is not connected to the connection end, a clamping space for accommodating the metal down conductor 1 is formed between the upper tongue 2-1 and the lower tongue 2-2; and when the metal down conductor 1 needs to be connected to the connection end, the staff can place the metal down conductor 1 in the clamping space between the upper tongue 2-1 and the lower tongue 2-2, and when the graphite grounding strip 2 enters the flexible extruded core block 3-2 as a whole, the upper tongue 2-1 and the lower tongue 2-2 are both subjected to the pressure generated by the deformation of the flexible extruded core block 3-2, thereby forming a clamping effect on the metal down conductor 1, thereby making the metal down conductor 1 stably connected to the graphite grounding strip 2, and finally achieving the purpose of grounding. The above connection method does not require the use of bolts or other devices that are easy to wear the surface of the graphite grounding strip 2, and the connection can be achieved by simple plug-in, which is convenient and fast, and has a good effect.

[0055] Specifically, in one embodiment of the present application, Figure 1 and Figure 2As shown, the lengths of the upper tongue 2-1 and the lower tongue 2-2 in the connection end are preferably equal, and the lengths of the upper tongue 2-1 and the lower tongue 2-2 are 0.5 to 0.75 times the length of the flexible extruded core block 3-2. The equal lengths of the upper tongue 2-1 and the lower tongue 2-2 can make the clamping force of the two on the metal down conductor 1 similar, improve the clamping stability, reduce the problem of the metal down conductor 1 tilting due to uneven force, and reduce the possibility of poor grounding effect.

[0056] In addition, the length of the upper tongue 2-1 and the lower tongue 2-2 is 0.5 to 0.75 times the length of the above-mentioned flexible extruded core block 3-2, so that when the upper tongue 2-1 and the lower tongue 2-2 are within this length range, it can ensure that there is a sufficiently long contact area between the graphite grounding strip 2 and the metal down conductor 1, further ensuring the grounding effect.

[0057] In another possible implementation of the present application, as shown in the figure, the upper tongue 2-1 and / or the lower tongue 2-2 are coated with a zinc layer, and the zinc layer can play an anti-corrosion role on the upper tongue 2-1 and the lower tongue 2-2.

[0058] Furthermore, the grounding strip body 2-0, the upper tongue 2-1 and the lower tongue 2-2 can be specifically a metal core composite graphite-based flexible grounding strip, the outermost layer of which is woven from graphite wires, and the graphite wires are internally provided with oxygen-free copper wires of different wire diameters, and the oxygen-free copper core is evenly distributed inside the composite graphite material, which can mitigate the influence of the metal skin effect on the conductor's conductive capacity. At the same time, based on the good thermal conductivity and air-isolating properties of expanded graphite, the metal core can be well protected from corrosion.

[0059] Specifically, in another embodiment of the present application, Figure 1-Figure 3 As shown, a central through hole 3-4 for accommodating the connection end is opened inside the flexible extruded core block 3-2, and the upper tongue 2-1, the lower tongue 2-2 and the metal down lead 1 clamped between the upper tongue 2-1 and the lower tongue 2-2 can be simultaneously inserted into the central through hole 3-4.

[0060] The central through hole 3-4 may specifically include: a large hole portion 3-5, a shrinkage hole portion 3-6 and a small hole portion 3-7.

[0061] The large hole portion 3-5 is arranged near the first end of the outer shell 3-1, and the aperture of the large hole portion 3-5 is larger than the thickness of the metal down conductor 1, so that the upper tongue portion 2-1 and the lower tongue portion 2-2 can enter the central through hole 3-4 after clamping the metal down conductor 1.

[0062] The shrinkage hole portion 3-6 is similar to the large hole portion 3-5, and is also a through-hole structure, but its inner diameter tends to be smaller than that of the large hole portion 3-5, specifically, it is a state of gradually decreasing inner diameter, rather than a uniform aperture. The shrinkage hole portion 3-6 is connected with the large hole portion 3-5, and the aperture of the shrinkage hole portion 3-6 is smaller than that of the large hole portion 3-5. By utilizing the structure that the aperture of the shrinkage hole portion 3-6 is smaller than that of the large hole portion 3-5, the upper tongue portion 2-1, the lower tongue portion 2-2 and the metal down conductor 1 are pressed against the inner wall of the shrinkage hole portion 3-6. The three cannot continue to move forward due to space restrictions, and form a state of being plugged and pressed against the flexible extrusion core.

[0063] The small hole portion 3-7 is connected with the shrinkage hole portion 3-6. It is not difficult to understand that the large hole portion 3-5, the shrinkage hole portion 3-6 and the small hole portion 3-7 are connected. In addition, the small hole portion 3-7 is arranged near the second end of the outer shell 3-1, and the aperture of the small hole portion 3-7 is smaller than the thickness of the metal down conductor 1. The aperture of the small hole portion 3-7 only allows the grounding strip body 2-0 to pass through, so that the grounding strip body 2-0 can protrude from the connecting portion 3 to form the exposed end of the graphite grounding strip 2, but the upper tongue portion 2-1, the lower tongue portion 2-2 and the metal down conductor 1 will not be out of the connecting portion 3.

[0064] Specifically, Figure 4 FIG. 1 is a schematic diagram of the structure of a flexible graphite lightning protection grounding body down conductor device provided by another embodiment of the present application. Figure 1-Figure 4 As shown, the connection process of the graphite grounding strip 2 and the metal down conductor 1 is as follows:

[0065] The special central through hole 3-4 design of the extruded core block is the key to realize the plug-in connection between the graphite grounding strip 2 and the metal down conductor 1. When the graphite grounding strip 2 and the metal down conductor 1 are plugged in, the connecting end of the graphite grounding strip 2 is first extended into the central through hole 3-4 from one end of the large hole 3-5 of the central through hole 3-4, and then extended from the small hole 3-7 of the central through hole 3-4. At this time, the upper tongue 2-1 and the lower tongue 2-2 of the graphite grounding strip 2 are first completely placed outside the outer shell 3-1, and then one end of the metal down conductor 1 is placed between the upper tongue 2-1 and the lower tongue 2-2, and the metal down conductor 1 and the graphite grounding strip 2 are returned together to the central through hole 3-4 of the connector. Due to the shrinkage hole 3-6, the metal down conductor 1 and the graphite grounding strip 2 will encounter obstacles during the movement in the central through hole 3-4. At this time, the staff can use the hammer force to make the metal down conductor 1 continue to be inserted into the connecting head. Since the extruded core block is a softer metal material, the shrinkage hole 3-6 will be deformed during the extrusion process, and then the metal down conductor 1 and the graphite grounding strip 2 will be tightly wrapped, thereby achieving an effective connection between the two.

[0066] Optionally, in another embodiment of the present application, Figure 3As shown, the connection part 3 may further include: a first anti-detachment plug 3 - 31 and a second anti-detachment plug 3 - 32.

[0067] Among them, the first anti-slip plug 3-31 is arranged at the first end of the outer shell 3-1, and a through hole adapted to the large hole portion 3-5 is opened on the first anti-slip plug 3-31; the second anti-slip plug 3-32 is arranged at the second end of the outer shell 3-1, and a through hole adapted to the small hole portion 3-7 is also opened on the second anti-slip plug 3-32; the first anti-slip plug 3-31 and the second anti-slip plug 3-32 are fixedly connected to the outer shell head. With the help of the above-mentioned first anti-slip plug 3-31 and the second anti-slip plug 3-32, the flexible extruded core block 3-2 can be limited, ensuring that the flexible extruded core block 3-2 can continuously generate pressure on the upper tongue 2-1, the lower tongue 2-2 and the metal down conductor 1 to ensure the connection effect.

[0068] It should be noted that the fixed connection between the first anti-slip plug 3-31 and the second anti-slip plug 3-32 and the outer shell head can be welding after the flexible extruded core block 3-2 is placed in the outer shell 3-1, or can be a fastening connection formed by bolts, screws, etc. That is, any connection method that can form a fixed connection between the first anti-slip plug 3-31 and the second anti-slip plug 3-32 and the outer shell head is within the protection scope of this application, and the specific connection method should also depend on the specific application scenario, and this application does not make further restrictions on this.

[0069] In another possible implementation of the present application, Figure 3 As shown, the material of the outer shell 3-1 can be a material with high hardness such as stainless steel, which can reduce the deformation of the outer shell 3-1 after being subjected to external force and ensure the use effect of the outer shell 3-1.

[0070] The material of the flexible extruded core block 3-2 can be a material with lower hardness such as silver or copper, so that the flexible extruded core block 3-2 can use its own deformation to form an effective extrusion effect on the upper tongue 2-1, the lower tongue 2-2 and the metal down conductor 1, thereby ensuring the connection stability and reliability between the metal down conductor 1 and the graphite grounding body 2.

[0071] In another possible implementation of the present application, Figure 1-Figure 4 As shown, the material of the metal down conductor 1 can be tinned copper-clad steel, and the end of the metal down conductor 1 connected to the graphite grounding strip 2 is provided with a knurling pattern. The design of the knurling pattern can improve the friction between the contact surface of the metal down conductor 1 and the upper tongue 2-1 and the lower tongue 2-2, further improve the connection stability between the metal down conductor 1 and the upper tongue 2-1 and the lower tongue 2-2, and then improve the connection stability between the metal down conductor 1 and the graphite grounding strip 2, and ensure the grounding effect of both.

[0072] Specifically, in another embodiment of the present application, the outer surface of the outer shell 3-1 can be coated with a heat shrink tube. The heat shrink tube is a special polyolefin heat shrink tube. The outer layer is made of high-quality soft cross-linked polyolefin material and the inner layer is composited with hot melt adhesive. The outer layer material has the characteristics of insulation, corrosion resistance, and wear resistance, and the inner layer has the advantages of low melting point, waterproof sealing, and high adhesion. By coating the surface of the outer shell 3-1 with a heat shrink tube, the insulation, corrosion resistance, and wear resistance of the outer shell 3-1, i.e., the connecting part 3, are improved.

[0073] The implementation process of the flexible graphite lightning protection grounding body down conductor device provided by the present application is specifically as follows:

[0074] When the graphite grounding strip 2 is plugged into the metal down conductor 1, the connecting end of the graphite grounding strip 2 is first extended into the center through hole 3-4 from one end of the large hole portion 3-5 of the center through hole 3-4, and then extended from the small hole portion 3-7 of the center through hole 3-4. At this time, the upper tongue 2-1 and the lower tongue 2-2 of the graphite grounding strip 2 are first completely placed outside the outer shell 3-1, and then one end of the metal down conductor 1 is placed between the upper tongue 2-1 and the lower tongue 2-2, and the metal down conductor 1 and the graphite grounding strip 2 are returned together to the center through hole 3-4 of the connector. Due to the shrinkage hole 3-6, the metal down conductor 1 and the graphite grounding strip 2 will encounter obstacles during the movement in the central through hole 3-4. At this time, the staff can use the hammer force to make the metal down conductor 1 continue to be inserted into the connecting head. Since the extruded core block is a softer metal material, the shrinkage hole 3-6 will be deformed during the extrusion process, and then the metal down conductor 1 and the graphite grounding strip 2 will be tightly wrapped, thereby achieving an effective connection between the two.

[0075] According to the second aspect of the present application, the present application also provides a lightning protection grounding body. The lightning protection grounding body provided by the present application may specifically include the flexible graphite lightning protection grounding body down conductor device mentioned in any of the above embodiments. Since the lightning protection grounding body includes the above-mentioned flexible graphite lightning protection grounding body down conductor device, it includes the following components: a metal down conductor 1, a graphite grounding strip 2 and a connecting portion 3. Among them, the metal down conductor 1 and the graphite grounding strip 2 are connected through the connecting portion 3, thereby forming a flexible graphite composite grounding device. The graphite grounding strip 2 may further include: a grounding strip body 2-0 and a connecting end. The grounding strip body 2-0 is connected to the connecting end, the first end of the connecting end is connected to the grounding strip body 2-0, the second end of the connecting end is connected to the metal down conductor 1, and the connecting end is arranged in the connecting portion 3, so that the metal down conductor 1 connected thereto is fixed in the connecting portion 3 at the same time, and the connection between the metal down conductor 1 and the graphite grounding strip 2 is realized by means of the connection between the connecting end and the grounding strip body 2-0. In addition, the connecting portion 3 may further include: an outer shell 3-1 and a flexible extruded core block 3-2. The above-mentioned outer shell 3-1 is a hollow structure inside, which serves as the outer shell and bearing component of the connecting part 3; the flexible extruded core block 3-2 is located in the hollow interior of the outer shell 3-1, and the above-mentioned connecting end is inserted into this flexible extruded core block 3-2 after being connected to the metal down conductor 1. By utilizing the deformable characteristics of the material of the flexible extruded core block 3-2 itself, the flexible extruded core block 3-2 generates deformation pressure on the metal down conductor 1 and the connecting end connected to each other, thereby making the connection between the connecting end and the metal down conductor 1 more closely fit, further improving the connection stability between the two, thereby achieving the effect of stably connecting the metal down conductor 1 and the graphite grounding body 2. The above-mentioned flexible graphite lightning protection grounding electrode down conductor device can realize effective and stable connection between the metal down conductor 1 and the graphite grounding electrode 2 by means of the flexible material of the flexible extruded core block 3-2 and the simple plugging of the metal down conductor 1 and the graphite grounding electrode 2 at the connecting part 3. There is no need to use bolts or other structures that may easily squeeze the plate body of the metal down conductor 1 and the coating on the plate body, thereby ensuring the anti-corrosion performance of the grounding device during use.

[0076] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0077] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0078] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0079] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features of the present invention.

[0080] The above description is only a preferred embodiment of the invention of the present application and is not intended to limit the invention of the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the invention of the present application shall be included in the protection scope of the invention of the present application.

Claims

1. A flexible graphite lightning protection grounding body down conductor device, comprising a metal down conductor (1) and a graphite grounding strip (2), characterized in that: Also includes: A connecting portion (3), the connecting portion (3) being used to connect the metal down conductor (1) and the graphite grounding strip (2); Wherein, the graphite grounding strip (2) comprises: a grounding strip body (2-0); A connecting end, wherein a first end of the connecting end is connected to the grounding strip body (2-0), a second end of the connecting end is connected to the metal down conductor (1), and the connecting end is arranged in the connecting portion (3); The connecting part (3) comprises: an outer shell (3-1), wherein the outer shell (3-1) is a hollow structure; A flexible extruded core block (3-2) is located inside the outer shell (3-1), and after the connection end is connected to the metal down conductor (1), it is inserted into the flexible extruded core block (3-2), and the connection end is tightly connected to the metal down conductor (1) under the pressure of the flexible extruded core block (3-2); The connection end comprises: An upper tongue (2-1), one end of the upper tongue (2-1) being connected to the grounding strip body (2-0), and the other end of the upper tongue (2-1) being used for being tightly connected to the metal down conductor (1); A lower tongue (2-2), one end of the lower tongue (2-2) being connected to the grounding strip body (2-0), and the other end of the lower tongue (2-2) being used for being tightly connected to the metal down conductor (1); Wherein, the metal down conductor (1) is located between the upper tongue (2-1) and the lower tongue (2-2); A central through hole (3-4) is provided inside the flexible extruded core block (3-2), and the upper tongue (2-1), the lower tongue (2-2) and the metal down conductor (1) are simultaneously inserted into the central through hole (3-4); The central through hole (3-4) comprises: A large hole portion (3-5), the large hole portion (3-5) being arranged close to the first end of the outer shell (3-1), and the hole diameter of the large hole portion (3-5) being larger than the thickness of the metal down conductor (1); a shrinkage hole portion (3-6) penetrating the large hole portion (3-5), wherein the hole diameter of the shrinkage hole portion (3-6) is smaller than the hole diameter of the large hole portion (3-5); a small hole portion (3-7) that penetrates the shrinkage hole portion (3-6), the small hole portion (3-7) being arranged close to the second end of the outer shell (3-1), and the aperture of the small hole portion (3-7) being smaller than the thickness of the metal down conductor (1); The graphite grounding belt (2) extends into the central through hole (3-4) from one end of the large hole portion (3-5) of the central through hole (3-4), and extends out from the end of the small hole portion (3-7) of the central through hole (3-4).

2. The flexible graphite lightning protection grounding body down conductor device according to claim 1 is characterized in that: The lengths of the upper tongue (2-1) and the lower tongue (2-2) are equal, and the lengths of the upper tongue (2-1) and the lower tongue (2-2) are 0.5 to 0.75 times the length of the flexible extruded core block (3-2).

3. The flexible graphite lightning protection grounding body down conductor device according to claim 1 is characterized in that: The upper tongue (2-1) and / or the lower tongue (2-2) are coated with a zinc skin layer.

4. The flexible graphite lightning protection grounding body down conductor device according to claim 1, characterized in that: The connecting portion (3) further comprises: A first anti-slip plug (3-31), the first anti-slip plug (3-31) being arranged at a first end of the outer shell (3-1), and the first anti-slip plug (3-31) being provided with a through hole for passing the graphite grounding belt (2); A second anti-slip plug (3-32), wherein the second anti-slip plug (3-32) is arranged at the second end of the outer shell (3-1), and a through hole for passing the graphite grounding belt (2) is provided on the second anti-slip plug (3-32).

5. The flexible graphite lightning protection grounding body down conductor device according to claim 1, characterized in that: The outer shell (3-1) is made of stainless steel and / or the flexible extruded core block (3-2) is made of silver or copper.

6. The flexible graphite lightning protection grounding body down conductor device according to claim 1, characterized in that: The outer surface of the outer shell (3-1) is covered with a heat shrinkable tube.

7. The flexible graphite lightning protection grounding body down conductor device according to claim 1, characterized in that: The end portion of the metal down conductor (1) connected to the graphite grounding strip (2) is provided with a knurling pattern.

8. A lightning protection grounding body, characterized in that: It comprises a flexible graphite lightning protection grounding body down conductor device as described in any one of claims 1 to 7.

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