Prefabricated grounding body based on corrosion-resistant grounding device

Abstract

The utility model relates to the technical field of grounding devices, in particular to a prefabricated grounding body based on a corrosion-resistant grounding device, which comprises a grounding conductor, a lead and a pouring module, one end of the grounding conductor is connected with an equipment body, and the other end of the grounding conductor is connected with the lead; the grounding conductor is used for connecting equipment and the wire, the wire is used for discharging and voltage equalizing, and the pouring module is used for fixing and sealing the joint of the grounding conductor and the wire; the wire comprises a wire core and a coating layer. The wrapping layer wraps the outer side of the wire core. According to the utility model, the grounding downlead which can be prefabricated is coated by the conductive polyolefin, so that the grounding body has good anti-corrosion performance, and internal metal materials are effectively protected; connection is completed in a factory, the flat steel conducts equipment current, the wire core discharges current and equalizes voltage, and the coating layer and the sealant are resistant to corrosion. During use, prefabrication is performed firstly, then field installation is performed, and efficient and stable grounding is realized through a prefabricated structure and a reasonable connection mode.

Description

Technical Field

[0001] This utility model relates to the field of grounding device technology, specifically to a prefabricated grounding body based on a corrosion-resistant grounding device. Background Technology

[0002] In modern power systems, grounding devices are a crucial component for ensuring the safe and stable operation of power facilities. With the rapid development of power technology in my country and the continuous expansion of substation capacity, the requirements for grounding systems are also increasing.

[0003] Traditional grounding methods typically involve welding two grounding materials together. However, this method has significant drawbacks. The welded joints are prone to corrosion over long-term use, and once the corrosion becomes severe, frequent replacement of the grounding materials is necessary. Frequent replacements not only increase maintenance costs but can also potentially lead to power safety accidents. Furthermore, the heavy metals contained in the replaced grounding materials can pollute the soil and damage the ecological environment.

[0004] In summary, existing grounding materials and connection methods have many shortcomings, making the development of a corrosion-resistant prefabricated grounding electrode an urgent matter. Utility Model Content

[0005] The purpose of this invention is to provide a prefabricated grounding electrode based on a corrosion-resistant grounding device. By optimizing the structure and connection method of the grounding electrode, it ensures that the grounding electrode has good anti-corrosion performance, effectively protects the internal metal materials, reduces maintenance costs, and meets the requirements of power facilities for grounding devices in terms of electrical performance, corrosion resistance, and other aspects.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated grounding body based on a corrosion-resistant grounding device, comprising: a grounding conductor, a wire, and a casting module; one end of the grounding conductor is connected to the equipment body, and the other end is connected to the wire; there are two wires, which are respectively arranged in a vertical direction and a horizontal direction; one end of the wire is connected to the grounding conductor, and the other end is buried underground for current discharge and pressure equalization; the casting module is used to fix and seal the connection between the grounding conductor and the wire.

[0007] The conductor includes a core and a sheath; the sheath wraps around the outside of the core.

[0008] Furthermore, the grounding conductor is a flat steel bar, which is long and strip-shaped and connected to the equipment body by welding.

[0009] Furthermore, the conductor is made of one of galvanized steel stranded wire, aluminum alloy stranded wire, or steel-cored aluminum stranded wire, and is stranded to conduct current.

[0010] Furthermore, the coating layer is made of graphite-based polyolefin inert material, and the coating layer is tubular and wrapped around the outside of the core.

[0011] Furthermore, the casting module includes connecting accessories and sealant; the connecting accessories are fitted onto the grounding conductor and wire connection positions; the sealant is a synthetic resin, which is filled into the connecting accessories when they are connected to the flat steel and wire.

[0012] Furthermore, the connecting accessory is a connector mold; the connector mold is a hollow cylindrical structure; the connector mold is fitted at the connection between the grounding conductor and the wire, wherein one end of the connector mold is fitted onto the grounding conductor and the other end of the connector mold is fitted onto the wire.

[0013] Beneficial effects

[0014] This invention uses a prefabricated grounding down conductor coated with conductive polyolefin to ensure that the grounding body has good corrosion resistance, effectively protects the internal metal materials, reduces maintenance costs, and meets the requirements of power facilities for grounding devices in terms of electrical performance, corrosion resistance and other aspects.

[0015] The prefabricated grounding down conductor of this application is connected in the factory. During operation, the flat steel conducts the equipment current, the conductor core discharges current and equalizes voltage, and the sheathing and sealant provide corrosion protection. It is prefabricated and then installed on-site. Through the prefabricated structure, specific material selection, and reasonable connection method, efficient and stable grounding is achieved. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a structural diagram of the prefabricated grounding electrode disclosed in this utility model;

[0018] Figure 2 This is a structural diagram of a prefabricated grounding electrode installed on a capacitor bank, as disclosed in this utility model.

[0019] Figure 3 This is a structural diagram of the prefabricated grounding electrode installed on the power box as disclosed in this utility model;

[0020] Figure 4 This is a structural diagram of a prefabricated grounding electrode installed on a surge arrester, as disclosed in this utility model.

[0021] In the picture:

[0022] 1. Flat steel; 2. Conductor; 3. Casting module; 4. Capacitor bank; 5. Power box; 6. Surge arrester. Detailed Implementation

[0023] 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.

[0024] Polyolefin, a novel conductive polymer-metal composite grounding material, has gradually attracted attention in recent years as a promising grounding material. It overcomes the shortcomings of traditional grounding materials, such as easy electrolysis and ionization, by coating traditional grounding metal materials with conductive polymers. This is achieved by utilizing the non-corrosive nature of conductive polymers and their ability to effectively block metal electrolysis and ionization.

[0025] This application achieves efficient and stable grounding through a prefabricated structure, specific material selection, and a reasonable connection method. During operation, flat steel 1 conducts the equipment current, conductor 2 discharges current and equalizes voltage, and the sheathing layer and sealant provide corrosion protection. It is prefabricated first, then installed on-site, and finally tested to ensure compliance with requirements, thus guaranteeing the safety of the power system.

[0026] To achieve the above objectives, this utility model provides the following technical solution, such as... Figure 1-4 As shown, a prefabricated grounding electrode based on a corrosion-resistant grounding device includes: a grounding conductor, a wire 2, and a casting module 3. One end of the grounding conductor is connected to the equipment body, and the other end is connected to the wire 2. There are two wires 2, which are respectively set in the vertical and horizontal directions. One end of the wire 2 is connected to the grounding conductor, and the other end is buried underground for current discharge and pressure equalization. The casting module 3 is used to fix and seal the connection between the grounding conductor and the wire 2.

[0027] The conductor 2 includes a core and a sheath; the sheath wraps around the outside of the core.

[0028] Furthermore, the grounding conductor is a flat steel bar 1, which is long and its length is customized according to the location of the grounding terminal and the height of the base platform of different equipment. It is connected to the equipment body by welding.

[0029] Furthermore, the conductor is made of one of galvanized steel stranded wire, aluminum alloy stranded wire, or steel-cored aluminum stranded wire, and is stranded to conduct current and meet the requirements of high current discharge and voltage equalization of the grounding grid.

[0030] Furthermore, the sheathing layer uses a graphite-based polyolefin inert material, which is tightly wrapped around the outside of the wire core in a tubular shape. This material has excellent corrosion resistance, aging resistance, and environmental protection properties. It can effectively protect the wire core from external environmental erosion and extend the service life of the grounding electrode.

[0031] Furthermore, the casting module 3 includes connecting accessories and sealant; the connecting accessories are prefabricated products in the factory, and their shape is designed according to the connection requirements. They are used to achieve sealing and reinforcement between the flat steel 1 and the conductor 2, ensuring reliable and stable connection; the sealant is a synthetic resin with penetrating and fusing function. When the connecting accessories are connected to the flat steel 1 and the conductor 2, it fills the gaps. After curing, it achieves strong adhesion between the interface of the grounding electrode polyolefin sheath, the metal core and the connector, etc., enhancing the sealing and stability of the grounding body.

[0032] Furthermore, the connecting accessory is a connector mold; the connector mold is a hollow cylindrical structure; the connector mold is fitted onto the connection between the grounding conductor and the wire 2, with one end of the connector mold fitted onto the grounding conductor and the other end fitted onto the wire 2. During use, sealant is injected into the connector mold to seal the connection between the grounding conductor and the wire 2.

[0033] Furthermore, prefabricated grounding electrodes are available in four models depending on the equipment used: 1m, 2m, 3m, and 5m; the 1m model is suitable for applications such as... Figure 1 The capacitor bank shown is 4;2mA and is suitable for applications such as... Figure 1 The power box 5 shown; the 3m model is suitable for, for example Figure 1 The surge arrester shown is a 6.5m model suitable for cement poles. The grounding electrode of each model can be adapted to the grounding requirements of different equipment by adjusting the length of the flat steel 1 and the overall structural dimensions.

[0034] The working principle and process are as follows:

[0035] Prefabrication Stage: In the factory, customized production is carried out according to the size requirements of different equipment for the grounding electrode. For equipment such as capacitor bank 4, power box 5, and surge arrester 6, the required grounding electrode models (1m, 2m, 3m) are determined. For each model, firstly, galvanized flat steel 1 of appropriate specifications is selected. Then, according to the application scenario, a suitable metal stranded wire is selected as the conductor, such as galvanized steel stranded wire, and it is uniformly coated with graphite-based polyolefin inert material to form conductor 2. Finally, the flat steel 1 and conductor 2 are connected using factory-prefabricated connecting hardware, and special sealant is filled at the connection point to complete the prefabrication of the grounding electrode.

[0036] On-site installation phase: At the construction site, determine the grounding location of each device according to the design drawings. For capacitor bank 4, reliably weld one end of the prefabricated 1m flat steel electrode 1 to the grounding terminal of capacitor bank 4 to ensure a firm electrical connection; then, according to the grounding grid design specifications, bury conductor 2 (grounding electrode) underground to a depth of not less than 0.8m to ensure that the current can be smoothly conducted into the ground.

[0037] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A prefabricated grounding body based on a corrosion-resistant grounding device, characterized in that: include: The equipment includes a grounding conductor, a wire (2), and a casting module (3). One end of the grounding conductor is connected to the equipment body, and the other end is connected to the wire (2). There are two wires (2), which are set in the vertical and horizontal directions respectively. One end of the wire (2) is connected to the grounding conductor, and the other end is buried underground. The casting module (3) is sealed at the connection between the grounding conductor and the wire (2). The conductor (2) includes a core and a sheath; the sheath wraps around the outside of the core.

2. The preformed grounding body based on the corrosion-resistant grounding device according to claim 1, characterized in that: The grounding conductor is a flat steel (1), which is a long strip and is connected to the equipment body by welding.

3. The preformed grounding body based on the corrosion-resistant grounding device according to claim 1, characterized in that: The core wire is made of one of galvanized steel stranded wire, aluminum alloy stranded wire, or steel-cored aluminum stranded wire, and is stranded in a twisted shape.

4. The preformed grounding body based on the corrosion-resistant grounding device according to claim 1, characterized in that: The coating layer is made of graphite-based polyolefin inert material and is tubularly wrapped around the outside of the core.

5. The preformed grounding body based on the corrosion-resistant grounding device according to claim 2, characterized in that: The casting module (3) includes a connecting accessory and a sealant; the connecting accessory is fitted at the connection position of the grounding conductor and the wire (2); the sealant is a synthetic resin and is filled in the connecting accessory.

6. The preformed grounding body based on the corrosion-resistant grounding device according to claim 5, characterized in that: The connecting accessory is a connector mold; the connector mold is a hollow cylindrical structure; the connector mold is fitted at the connection between the grounding conductor and the wire (2), wherein one end of the connector mold is fitted on the grounding conductor and the other end of the connector mold is fitted on the wire (2).

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