Flexible graphite grounding body

Abstract

The utility model provides a kind of flexible graphite grounding body, effectively overcome the deficiency of prior art, realize the beneficial effect of high reliability, long life and convenient installation;Bundled flexible graphite strip is wrapped with conductive glue filling body and metal net, significantly enhance the structural stability of grounding body body, conductive uniformity and tensile strength, prevent internal graphite strip loose;By setting up the first interface with elastic metal sheet male head and the second interface with female groove and triangular pressure head pressure mechanism, realize the quick, firm insertion and locking between interfaces, ensure that the connection point has very low contact resistance and excellent anti-vibration, anti-pulling performance, completely solve the core problem that traditional flexible graphite grounding body connection point is loose, contact resistance is big, greatly improve the long-term stability and safety of entire grounding system, simplify field installation operation simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of grounding electrodes, and in particular to a flexible graphite grounding electrode. Background Technology

[0002] Grounding devices are crucial facilities for ensuring the safe and reliable operation of power systems, communication systems, buildings, and various electrical equipment. Their function is to safely conduct fault currents, lightning currents, and other electrical currents to the earth, preventing accidents such as electric shock, equipment damage, and fires. With the increasing voltage levels of modern power transmission and the widespread application of electronic equipment, more stringent requirements have been placed on the conductivity, corrosion resistance, stability, and service life of grounding devices.

[0003] Traditional metal grounding electrodes (such as galvanized flat steel and copper rods) have good conductivity, but they also have significant inherent drawbacks. First, metal materials are prone to electrochemical corrosion during long-term service in soil, especially in humid, saline-alkali, or acidic soil environments, where the corrosion rate accelerates, leading to a gradual increase in grounding resistance and even fracture failure. This severely shortens the service life of the grounding system (typically only 5-15 years), requiring frequent maintenance or replacement, resulting in high costs and impacting system reliability. Second, metal grounding electrodes are usually rigid structures, making installation difficult and adaptable in complex terrains (such as mountainous or rocky areas) or when bending is required.

[0004] To overcome the corrosion problem of metallic grounding electrodes, non-metallic grounding materials, especially flexible graphite, have received widespread attention and application in recent years. Flexible graphite possesses excellent electrical and thermal conductivity, chemical stability (resistance to acid, alkali, and salt corrosion), and flexibility, with a service life far exceeding that of metallic materials (up to 30 years or more). Existing flexible graphite grounding electrodes typically take the form of graphite wire, graphite rope, or braided tape. However, in practical applications, especially in the connection process, there are still problems that urgently need to be solved:

[0005] Poor connection reliability: Existing connections between flexible graphite grounding electrodes, or with other equipment (such as down conductors and grounding terminals), often rely on metal clamps, binding, or simple plug-in methods. This connection method suffers from high contact resistance and a tendency for connection points to loosen. Because flexible graphite is relatively soft and has a smooth surface, metal clamps may loosen during long-term operation due to vibration, changes in soil stress, or material creep, leading to poor contact at the connection point, significantly increased contact resistance, and even becoming a bottleneck in the entire grounding loop. This not only weakens the grounding effect but may also cause safety hazards due to severe overheating at the contact point when discharging large currents (such as lightning current).

[0006] Insufficient structural stability: When flexible graphite units (such as single wires or strips) are subjected to complex stresses such as tension, compression, and bending in soil, their position and shape may shift relative to each other, affecting the stability of the conductive path. Although some solutions attempt to bundle multiple graphite wires together (e.g., simple binding or braiding), the lack of effective internal fixing and external protection mechanisms means that bundled structures are prone to loosening and deformation during construction dragging or long-term operation, affecting the conductive cross-sectional area and overall mechanical strength.

[0007] Lack of interface standardization and convenience: Existing connection methods often require on-site fabrication or rely on various auxiliary connectors (such as bolts, U-clamps, wire lugs, etc.), making the installation process cumbersome, requiring high skills from construction personnel, and making it difficult to guarantee connection quality. Furthermore, the interfaces of products from different manufacturers are not standardized, resulting in poor interchangeability.

[0008] Therefore, how to fully leverage the advantages of flexible graphite materials such as corrosion resistance and long lifespan while effectively solving problems such as poor connection reliability, easy loosening of structure, and inconvenient installation, and designing a flexible graphite grounding electrode with stable low-resistance connection, high mechanical reliability, and convenient installation interface has become an urgent technical problem for those skilled in the art. Utility Model Content

[0009] The purpose of this invention is to provide a flexible graphite grounding electrode to solve the problems existing in the prior art.

[0010] To achieve the above objectives, this utility model provides the following solution:

[0011] This utility model provides a flexible graphite grounding electrode, comprising:

[0012] The grounding electrode body has flexible graphite strips bundled together inside it;

[0013] The first interface is fixed to one end of the grounding body and is connected to the grounding body.

[0014] The second interface is fixed to the other end of the grounding body and is connected to the grounding body. The second interface cooperates with the first interface.

[0015] Preferably, the grounding body includes a conductive outer layer, the flexible graphite strip is wrapped inside the conductive outer layer, and a conductive adhesive filler is provided between the flexible graphite strip and the conductive outer layer.

[0016] Preferably, the flexible graphite strips are bundled together by wrapping them in a metal mesh.

[0017] Preferably, the first interface includes a first housing, and a male connector is provided on the outer side of the end of the first housing. The grounding body is inserted into the first housing and connected to the male connector.

[0018] Preferably, the male head is made of a flexible metal sheet.

[0019] Preferably, the second interface includes a second housing, and a female groove is provided on the inner side of the end of the second housing. The grounding body is inserted into the second housing and connected to the female groove. The female groove cooperates with the male head, and a clamping mechanism is provided above the female groove.

[0020] Preferably, the pressing mechanism includes a triangular pressing head, which is rotatably disposed in the second housing via a rotating shaft. The side of the triangular pressing head is provided with a lever. When the lever is in a horizontal state, the triangular pressing head presses the male head into the female groove.

[0021] The present invention achieves the following beneficial technical effects compared to the prior art:

[0022] This utility model provides a flexible graphite grounding electrode that effectively overcomes the shortcomings of existing technologies, achieving the beneficial effects of high reliability, long lifespan, and convenient installation. Bundles of flexible graphite strips combined with conductive adhesive filler and metal mesh wrapping significantly enhance the structural stability, conductivity uniformity, and tensile strength of the grounding electrode body, preventing the internal graphite strips from loosening. By setting a first interface with an elastic metal male head and a second interface with a female groove and a triangular pressure head clamping mechanism, quick and secure insertion and locking between interfaces are achieved, ensuring that the connection point has extremely low contact resistance and excellent vibration and pull-out resistance. This completely solves the core problems of easy loosening and high contact resistance of traditional flexible graphite grounding electrodes, greatly improving the long-term stability and safety of the entire grounding system, while simplifying on-site installation operations. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the flexible graphite grounding electrode structure provided by this utility model. Detailed Implementation

[0025] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

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

[0028] The purpose of this invention is to provide a flexible graphite grounding electrode to solve the problems existing in the prior art.

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1:

[0031] This embodiment provides a flexible graphite grounding electrode, such as Figure 1 As shown, it includes:

[0032] The grounding body 1 has flexible graphite strips 2 bundled together inside it.

[0033] First interface 3, the first interface 3 is fixed to one end of the grounding body 1 and is connected to the grounding body 1;

[0034] The second interface 4 is fixed to the other end of the grounding body 1 and is connected to the grounding body 1. The second interface 4 cooperates with the first interface 3.

[0035] In one embodiment, the grounding body 1 includes a conductive outer layer 11, which can be made of a metal film to ensure good flexibility. A flexible graphite strip 2 is wrapped inside the conductive outer layer 11. A conductive adhesive filler 12 is provided between the flexible graphite strip 2 and the conductive outer layer 11, which can not only achieve tight fixation between the two, but also ensure good conductivity.

[0036] In one implementation, multiple flexible graphite strips 2 are bundled together by a metal mesh 13, which significantly enhances the structural stability, conductivity uniformity, and tensile strength of the grounding body 1 and prevents the internal graphite strips from loosening.

[0037] In one implementation, the first interface 3 includes a first housing 31, which can be made of engineering plastic to ensure good corrosion resistance and facilitate processing and production. A male connector 32 is provided on the outer side of the end of the first housing 31. The grounding body 1 is inserted into the first housing 31 and connected to the male connector 32. It should be understood that the grounding body 1 and the male connector 32 can be connected and encapsulated with conductive adhesive to ensure a firm connection and good contact. Of course, other connection methods can also be used, as long as a stable connection and conductivity can be guaranteed.

[0038] In one implementation, the male head 32 uses a flexible metal sheet, which can be formed by bending a metal sheet.

[0039] In one embodiment, the second interface 4 includes a second housing 41. A female groove 42 is provided on the inner side of the end of the second housing 41. The female groove 42 can be a metal groove. The grounding body 1 is inserted into the second housing 41 and connected to the female groove 42. The female groove 42 cooperates with the male head 32. A pressing mechanism is provided above the female groove 42 to press the male head 32 and the female groove 42 tightly together.

[0040] In one embodiment, the clamping mechanism includes a triangular pressure head 43 with rounded edges to ensure smooth rotation. The triangular pressure head 43 is rotatably mounted in the second housing 41 via a pivot 44. A lever 45 is provided on the side of the triangular pressure head 43. When the lever 45 is in a horizontal position, the triangular pressure head 43 presses the male head 32 into the female groove 42. Since the male head 32 has a certain elasticity, after the triangular pressure head 43 applies pressure to the male head 32, the male head 32 can press the female groove 42, thereby realizing connection and conduction.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] It should be noted that the components mentioned in the above embodiments are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0043] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A flexible graphite grounding electrode, characterized in that: include: The grounding electrode body has flexible graphite strips bundled together inside it; The first interface is fixed to one end of the grounding body and is connected to the grounding body. The second interface is fixed to the other end of the grounding body and is connected to the grounding body. The second interface cooperates with the first interface.

2. The flexible graphite grounding electrode according to claim 1, characterized in that: The grounding electrode body includes a conductive outer layer, the flexible graphite strip is wrapped inside the conductive outer layer, and a conductive adhesive filler is provided between the flexible graphite strip and the conductive outer layer.

3. The flexible graphite grounding electrode according to claim 1, characterized in that: Multiple flexible graphite strips are bundled together by a metal mesh.

4. The flexible graphite grounding electrode according to claim 1, characterized in that: The first interface includes a first housing, and a male connector is provided on the outer side of the end of the first housing. The grounding body is inserted into the first housing and connected to the male connector.

5. The flexible graphite grounding electrode according to claim 4, characterized in that: The male connector is made of a flexible metal sheet.

6. The flexible graphite grounding electrode according to claim 4, characterized in that: The second interface includes a second housing, with a female groove on the inner side of the end of the second housing. The grounding body is inserted into the second housing and connected to the female groove. The female groove mates with the male connector, and a clamping mechanism is provided above the female groove.

7. The flexible graphite grounding electrode according to claim 6, characterized in that: The clamping mechanism includes a triangular pressure head, which is rotatably mounted in the second housing via a rotating shaft. The side of the triangular pressure head is provided with a lever. When the lever is in a horizontal position, the triangular pressure head clamps the male head into the female groove.

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