Ground strap having a braided construction

Abstract

This utility model discloses a grounding strip with a braided structure, belonging to the field of lightning protection grounding technology, including a graphite braided strip and a reinforcing braided layer. The graphite braided strip is formed by weaving graphite wires. The reinforcing braided layer is a layered structure formed by weaving a mixture of reinforcing wires and graphite wires, and the layered structure of the reinforcing braided layer is arranged circumferentially along the interior of the graphite braided strip. The graphite braided strip, woven from graphite wires, provides excellent conductivity and corrosion resistance. The reinforcing braided layer, formed by weaving a mixture of reinforcing wires and graphite wires, enhances the mechanical strength of the grounding strip and reduces the probability of damage or breakage. The mixed weaving of graphite wires and reinforcing wires serves as a structural transition, avoiding discontinuities or abrupt changes in the resistivity of the graphite braided strip, which would lead to an increase in overall grounding resistance and a reduction in current discharge efficiency. The integrated braided structure gives the grounding strip both flexibility and strength, facilitating installation and transportation.

Description

Technical Field

[0001] This utility model belongs to the field of lightning protection grounding technology, specifically a grounding strip with a braided structure. Background Technology

[0002] In power systems, communication base stations, and lightning protection projects, grounding systems are a crucial component for ensuring the safe operation of equipment. Grounding strips, as a key component of the grounding system, directly affect the grounding effect and equipment safety. Currently, commonly used grounding strips mainly include graphite grounding strips and metal grounding strips. Metal grounding strips are typically made of metal materials such as copper and galvanized steel. Metal grounding strips have high tensile and compressive strength, capable of withstanding significant external forces. However, metal grounding strips are prone to electrochemical corrosion in humid or highly corrosive environments, leading to increased grounding resistance or even breakage.

[0003] Therefore, graphite grounding strips are more commonly used in highly corrosive soil environments. Graphite grounding strips are grounding devices made primarily of high-purity graphite, possessing high chemical stability. However, graphite grounding strips are soft and have low strength, making them prone to damage or breakage under external forces during installation or use. When connected to grounding terminals, pure graphite grounding strips are susceptible to damage or detachment under high-intensity compression, affecting electrical continuity and grounding effectiveness.

[0004] Patent CN209313027U discloses a reinforced flexible graphite grounding electrode. It strengthens the graphite braid by inserting a stainless steel reinforcing core plate along the length of the flexible graphite braid, preventing the exposed flexible graphite braid from shaking violently and reducing its conductivity. While this structure enhances the overall rigidity of the graphite braid, the sheet-like reinforcing core plate reduces the flexibility of the graphite braid, and the deformable direction of the internal core plate is unknown, making it difficult to roll and transport the graphite braid. Furthermore, the interlayer bonding between the graphite wires and the reinforcing core plate is weak during weaving, and the weaving force of the graphite wires may also deform the reinforcing core plate. Utility Model Content

[0005] The purpose of this invention is to provide a grounding strip with a braided structure to solve the problems mentioned in the prior art.

[0006] A grounding strip with a braided structure is provided, comprising:

[0007] Graphite braided tape, wherein the graphite braided tape is formed by weaving graphite threads;

[0008] The reinforcing braided layer is a layered structure formed by weaving together reinforcing threads and graphite threads, and the layered structure of the reinforcing braided layer is arranged circumferentially along the inside of the graphite braided strip.

[0009] Furthermore, the reinforcing wires within the reinforcing braid layer are made of metal. Metal materials provide high mechanical strength and electrical conductivity. The hybrid braiding of metal and graphite wires optimizes the conductivity of the grounding strip.

[0010] Furthermore, the reinforcing wires within the reinforcing braid layer are made of carbon fiber. Carbon fiber possesses high strength, high modulus, and lightweight properties, while also exhibiting good electrical conductivity. Carbon fiber itself has good corrosion resistance, and no electrochemical corrosion occurs between it and the graphite wires.

[0011] Furthermore, the mixing ratio of reinforcing wires to graphite wires within the reinforcing braid layer is 1 to 3:5. Optimizing the ratio of reinforcing wires to graphite wires avoids abrupt changes in the resistance of the graphite braided tape, balancing strength and conductivity. Reasonably controlling the amount of reinforcing wires reduces manufacturing costs.

[0012] Furthermore, the reinforcing braided layer is distributed within a radius range of 7 to 9:10 of the graphite braided tape. Concentrating the reinforcing layer on the outer layer addresses the more complex stress distribution on the outer layer of the graphite braided tape. The reinforcing braided layer needs to be covered by a graphite braided tape of a certain thickness to prevent corrosion or oxidation from the external environment. If the reinforcing wire is made of metal, the probability of electrochemical corrosion between the metal and graphite in a humid environment can be reduced.

[0013] Furthermore, the reinforcing braided layer is distributed within a radius range of 7.5 to 8:10 of the graphite braided strip.

[0014] Furthermore, the ends of the graphite braided tape have wiring terminals that are braided away from the axis on all four sides and form a receiving cavity in the center. The receiving cavity formed at the end of the graphite braided tape allows the grounding terminal to engage with the graphite braided tape from inside the receiving cavity, avoiding contact with the reinforcing braided layer and thus preventing potential differences at the wiring terminals.

[0015] Furthermore, the reinforcing braided layer is woven from the inside of the graphite braided tape and gradually transitions to the outer peripheral surface of the wire end. The surface of the graphite braided tape is reinforced by the reinforcing braided layer, which enhances the surface's compressive and shear resistance and prevents the graphite wires from breaking or falling off.

[0016] Furthermore, the receiving cavity of the wiring end is rectangular in shape. The rectangular shape, compared to an arc shape, prevents slippage that could cause the grounding terminal to detach from the wiring end, thus improving connection stability.

[0017] Furthermore, the bottom of the receiving cavity at the terminal of the wiring is braided with a rounded chamfer. The rounded chamfer ensures a tight fit between the grounding terminal and the terminal, preventing any gaps in contact that could affect conductivity.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] Graphite braided tape is made of woven graphite wire, providing excellent conductivity and corrosion resistance. The reinforcing braid layer is woven from a mixture of reinforcing and graphite wires, forming a layered structure that enhances the mechanical strength of the grounding tape and reduces the likelihood of damage or breakage. The mixed weaving of graphite and reinforcing wires serves as a structural transition, preventing abrupt changes or breaks in the resistivity of the graphite braided tape that could lead to increased overall grounding resistance and reduced current discharge efficiency. The integrated braided structure gives the grounding tape both flexibility and strength, facilitating installation and transportation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this drawing or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this drawing. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the cross-sectional structure of a grounding strip with a braided structure;

[0022] Figure 2 This is a partial structural diagram of a grounding strip with a braided structure.

[0023] In the diagram: 1. Graphite braided tape; 2. Reinforcing braided layer; 3. Wiring end. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0025] Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without any inventive effort. Furthermore, it is understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, any changes to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0026] However, there may be instances where unnecessary detailed descriptions are omitted. For example, detailed descriptions of well-known matters or repetitive descriptions of essentially the same structures may be omitted. This is to avoid unnecessarily lengthy descriptions and to facilitate understanding by those skilled in the art. Furthermore, the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand this application and are not intended to limit the subject matter of the claims.

[0027] Please see Figure 1 As shown in the embodiment of this utility model, a grounding strip with a braided structure includes a graphite braided strip 1 and a reinforcing braided layer 2. The graphite braided strip 1 is formed by weaving graphite threads. The reinforcing braided layer 2 is a layered structure formed by weaving a mixture of reinforcing threads and graphite threads, and the layered structure of the reinforcing braided layer 2 is arranged circumferentially along the interior of the graphite braided strip 1.

[0028] The grounding strip mainly consists of a graphite braided strip 1 and a reinforcing braided layer 2. The graphite braided strip 1 is formed by weaving graphite wires, utilizing the excellent conductivity and chemical stability of graphite to achieve the grounding function. The reinforcing braided layer 2 is a layered structure formed by weaving a mixture of reinforcing and graphite wires, arranged circumferentially within the graphite braided strip 1. The reinforcing wires enhance the overall structural strength. Simultaneously, the mixed weaving of graphite and reinforcing wires serves as a structural transition, with the graphite wires dominating the conductive path. This avoids potential differences or corrosion risks introduced by the reinforcing material, preventing discontinuities or abrupt changes in the resistivity of the graphite braided strip 1, and ensuring the stability of the overall grounding resistance. The inner layer maintains a pure graphite braided structure, ensuring the overall flexibility of the grounding strip and facilitating its coiling and transportation.

[0029] In one embodiment, the reinforcing wire is made of a metallic material, such as carbon steel, galvanized steel, copper, or galvanized steel. Metals themselves possess high mechanical strength and good electrical conductivity, providing high-strength support through an outer layer of mixed braiding. When metallic wires are mixed with graphite wires in the braiding, the metallic wires enhance mechanical strength within the reinforcing braid layer, while their excellent electrical conductivity synergizes with the graphite wires to further optimize the conductivity of the grounding strip.

[0030] The metal wire layer is covered by an outer graphite wire braid layer, restricting the reinforcing braid layer 2 from direct exposure to the corrosive environment. Although the reinforcing braid layer 2 formed by the metal wire braid has better electrical conductivity, there is a potential risk of electrochemical corrosion between the metal and graphite. To mitigate electrochemical corrosion, metal materials with potentials closer to graphite, such as titanium, nickel-based alloys, and nickel-copper alloys, can be selected.

[0031] In one embodiment, the reinforcing wire is carbon fiber, which is woven together with graphite wire to form a lightweight, high-strength composite structure. Both carbon fiber and graphite are carbon-based materials, posing no risk of electrochemical corrosion. Furthermore, carbon fiber possesses good electrical conductivity, preventing significant changes to the overall resistance of the grounding strip. The corrosion resistance of carbon fiber and its compatibility with graphite wire extend the service life of the grounding strip, avoiding problems such as increased grounding resistance or structural damage caused by electrochemical corrosion.

[0032] The mixing ratio of reinforcing wires to graphite wires in the reinforcing braid layer 2 is 1 to 3:5. This ratio design ensures that the current is evenly distributed along the graphite wires. This guarantees the strength of the grounding strip while avoiding sudden changes in the resistance of the graphite braided strip 1 due to an excessively high proportion of reinforcing wires, as carbon fiber has a higher resistance than graphite wires. Reasonably controlling the amount of reinforcing wires achieves a balance between the strength and conductivity of the grounding strip. Appropriately reducing the proportion of reinforcing wires retains the flexibility of the graphite braid.

[0033] The reinforcing braided layer 2 is distributed within a radius range of 7 to 9:10 of the graphite braided strip 1. The outer layer of the grounding strip bears more mechanical stress, such as installation compression and soil pressure; the reinforcing braided layer 2 specifically enhances its damage resistance. The inner pure graphite structure maintains overall flexibility, adapting to complex terrain. The outer graphite wire wrapping the metal reinforcing layer forms a physical barrier, reducing the risk of corrosion.

[0034] Please see Figure 1 and Figure 2 As shown, the end of the grounding strip is braided to form a hollow cavity, and the grounding terminal contacts the pure graphite layer from inside the cavity. When the conductor portion of the grounding terminal enters the cavity, the grounding terminal only contacts the graphite layer, avoiding direct connection with the metal or carbon fiber reinforcement layer to prevent potential difference or galvanic corrosion. The cavity structure increases the contact area between the grounding terminal and the graphite wire, reducing contact resistance. The wiring end 3 of the graphite braided strip 1 and the grounding terminal can have mutually mating insulating shells. The wiring end 3 is fixed inside the insulating shell for electrical insulation and is connected to the grounding terminal by plugging.

[0035] Furthermore, the reinforcing braided layer 2 is woven from the inside of the graphite braided tape 1 and gradually transitions to the outer peripheral surface of the terminal 3, forming a surface reinforcement layer. The surface reinforcement layer of the terminal 3 resists the pressure and shear force during installation, prevents the graphite wire from peeling off, ensures the electrical continuity and grounding effect of the connection point, and further improves the overall reliability and stability of the grounding strip.

[0036] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. A grounding tape having a braided structure, characterized by, include: Graphite braided tape (1), the graphite braided tape (1) is formed by weaving graphite threads; The reinforcing braided layer (2) is a layered structure formed by mixing reinforcing wires and graphite wires. The layered structure of the reinforcing braided layer (2) is arranged circumferentially inside the graphite braided strip (1).

2. The grounding tape having a woven structure according to claim 1, wherein, The reinforcing wires in the reinforcing braid layer (2) are made of metal.

3. A grounding strip with a braided structure according to claim 1, characterized in that, The reinforcing wires in the reinforcing braid layer (2) are made of carbon fiber.

4. A grounding strip with a braided structure according to claim 1, characterized in that, The reinforcing braided layer (2) is distributed within a radius range of 7 to 9:10 of the graphite braided strip (1).

5. A grounding strip with a braided structure according to claim 4, characterized in that, The reinforcing braided layer (2) is distributed within a radius range of 7.5 to 8.10 of the graphite braided strip (1).

6. A grounding strip with a braided structure according to claim 1, characterized in that, The graphite braided tape (1) has a wire end (3) that is braided around the four sides away from the axis and forms a cavity in the middle.

7. A grounding strip with a braided structure according to claim 6, characterized in that, The reinforcing braided layer (2) is woven from the inside of the graphite braided tape (1) and gradually transitions to the outer peripheral surface of the wiring end (3).

8. A grounding strip with a braided structure according to claim 6, characterized in that, The cavity of the terminal (3) is rectangular.

9. A grounding strip with a braided structure according to claim 8, characterized in that, The bottom of the receiving cavity of the terminal (3) is woven with an arc-shaped chamfer.

Images