Anti-corrosion ultrahigh-voltage transformer substation grounding device

Abstract

The utility model provides an anti-corrosion ultrahigh-voltage transformer substation grounding device, which belongs to the technical field of grounding devices and comprises a grounding body and a grounding wire, one end of the grounding wire is connected with the grounding body, the other end of the grounding wire is connected with equipment, an anti-corrosion outer layer is arranged on the grounding wire and is of a three-layer structure, namely an inner layer, a middle layer and an outer layer, the inner layer, the middle layer and the outer layer wrap the grounding wire, and a drainage structure is arranged on the grounding body and comprises a drainage pipeline and a filter layer. The anti-corrosion outer layer with a three-layer structure is arranged on the grounding wire and comprises the inner layer of the epoxy resin layer, the middle layer of the polyurethane layer and the outer layer of the polytetrafluoroethylene layer, so that the grounding device can resist erosion of various corrosion factors, and the service life of the grounding device is prolonged. The corrosion resistance of the device is improved, and after the device is operated in a long-term complex environment, a user can judge the corrosion degree and the protection effect of the grounding device by observing the change condition of the grounding resistance.

Description

Technical Field

[0001] This utility model belongs to the field of grounding device technology, and more specifically, it relates to a corrosion-resistant ultra-high voltage substation grounding device. Background Technology

[0002] In the field of power systems, grounding devices are widely used in ultra-high voltage substations as a common safety protection device to ensure the stable operation of the power system and the safety of personnel and equipment. However, traditional grounding devices usually adopt a simple single-layer protective structure, which cannot resist the erosion of various corrosive factors, resulting in a shortened service life of the grounding device. At the same time, traditional devices have poor drainage performance and lack drainage structures. If water cannot be drained in time, the grounding body is easily immersed in water for a long time, which accelerates corrosion and has a serious impact on the reliability of the power system, reducing the stability and safety of traditional devices. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a corrosion-resistant ultra-high voltage substation grounding device. This addresses the issue that traditional grounding devices typically employ a simple single-layer protective structure, which cannot effectively resist the erosion of various corrosive factors, leading to a shortened service life of the grounding device.

[0004] The purpose and effectiveness of this anti-corrosion ultra-high voltage substation grounding device are achieved by the following specific technical means:

[0005] A corrosion-resistant ultra-high voltage substation grounding device includes a grounding body and a grounding wire. One end of the grounding wire is connected to the grounding body, and the other end is connected to the equipment. The grounding wire is provided with a corrosion-resistant outer layer, which has a three-layer structure: an inner layer, a middle layer, and an outer layer. The inner layer, the middle layer, and the outer layer are wrapped around the grounding wire. The grounding body is provided with a drainage structure, which includes a drainage pipe and a filter layer.

[0006] According to a preferred embodiment, the surface of the drainage pipe is uniformly distributed with drainage holes, the drainage pipe is sleeved on the grounding body, the space between the grounding body and the drainage pipe is filled with insulating material, and the filter layer is disposed on the pipe wall of the drainage pipe.

[0007] According to a preferred embodiment, the filter layer has a three-layer structure, namely an outer filter, a middle filter, and an inner filter, and the pore size of the filter gradually decreases from the outside to the inside.

[0008] According to a preferred embodiment, the connection end of the grounding wire to the device and the connection end of the grounding body both adopt crimp terminals.

[0009] According to a preferred embodiment, the grounding body is cylindrical, and its outer surface is provided with a spiral groove.

[0010] According to a preferred embodiment, a sealing sleeve is provided at the connection between the grounding wire and the grounding body, and the sealing sleeve is made of rubber material.

[0011] According to a preferred embodiment, the inner layer is an epoxy resin layer, the middle layer is a polyurethane layer, and the outer layer is a polytetrafluoroethylene layer.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model, by setting a three-layer anti-corrosion outer layer on the grounding wire, including an inner layer of epoxy resin, a middle layer of polyurethane, and an outer layer of polytetrafluoroethylene, enables the grounding device to resist the erosion of various corrosive factors, extending the service life of the grounding device and improving its corrosion resistance. After long-term operation in complex environments, users can judge the degree of corrosion and the protective effect of the grounding device by observing the changes in grounding resistance, allowing users to understand the working status of the grounding device in a timely manner, thus improving the reliability and stability of the device. The spiral shape of the raised grounding body surface enables the device to distribute current more evenly, reducing the risk of local overheating, ensuring the stability of the grounding effect, and improving the operational safety of the device.

[0014] 2. When using this device, users can quickly drain accumulated water through the drainage pipe with uniformly spaced drainage holes on the grounding electrode, as well as the three layers of filter layers with gradually decreasing pore sizes, preventing impurities from entering the drainage pipe. This eliminates the need for frequent maintenance of the drainage structure and improves the device's drainage performance. Furthermore, by setting spiral grooves on the surface of the grounding electrode, the contact area between the grounding electrode and the soil is increased, allowing the device to better conduct current, reduce grounding resistance, and improve its conductivity and safety. The sealing sleeve at the connection between the grounding wire and the grounding electrode prevents moisture and impurities from entering, ensuring the stability and corrosion resistance of the connection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembled structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the grounding electrode structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the drainage pipe structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the grounding wire structure of this utility model.

[0020] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0021] 11. Grounding electrode; 12. Grounding wire; 13. Inner layer; 14. Middle layer; 15. Outer layer; 17. Drainage pipe; 18. Filter layer; 19. Sealing sleeve; 21. Insulating material; 22. Groove; 23. Equipment; 24. Drain hole. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solution of this utility model, but should not be used to limit the scope of protection of this utility model.

[0023] Example:

[0024] like Figures 1 to 5 As shown, this utility model provides as follows Figures 1 to 5 As shown, this utility model provides a corrosion-resistant ultra-high voltage substation grounding device, including a grounding body 11 and a grounding wire 12. The grounding body 11 provides a stable grounding foundation for the entire device, improving its grounding stability. One end of the grounding wire 12 is connected to the grounding body 11, and the other end is connected to the equipment 23. The grounding wire 12 facilitates current conduction between the grounding body 11 and the equipment 23, improving the device's conductivity reliability. The grounding wire 12 has a corrosion-resistant outer layer, protecting it from corrosion and extending the device's service life. The corrosion-resistant outer layer has a three-layer structure: an inner layer 13, a middle layer 14, and an outer layer 15. These three layers wrap around the grounding wire 12, forming multiple layers of protection, enhancing corrosion resistance and improving the device's protective performance. The grounding body 11 has a drainage structure, allowing for timely drainage of accumulated water, preventing long-term immersion and improving the device's moisture resistance. The drainage structure includes a drainage pipe 17 and a filter layer 18. The drainage pipe 17 and the filter layer 18 ensure smooth drainage and prevent impurities from entering, thereby improving the efficiency and quality of drainage.

[0025] like Figure 2 , 4As shown, drainage holes 24 are evenly distributed on the surface of the drainage pipe 17. The arrangement of these drainage holes 24 enables omnidirectional drainage, improving its uniformity and speed. The drainage pipe 17 is fitted onto the grounding electrode 11, ensuring a close fit and improving the targeted nature of the drainage. An insulating material 21 is filled between the grounding electrode 11 and the drainage pipe 17. This insulating material 21 prevents current leakage and enhances the safety of the device. A filter layer 18 is disposed on the wall of the drainage pipe 17. The filter layer 18 filters impurities, ensuring the purity of the drainage.

[0026] The filter layer 18 has a three-layer structure: an outer filter, a middle filter, and an inner filter, with the pore size gradually decreasing from the outside to the inside. This three-layer design with gradually decreasing pore size enables step-by-step filtration, improving the filtration effect. The outer filter is made of stainless steel; the middle filter uses activated carbon fiber with good adsorption properties to adsorb corrosive substances; and the inner filter is made of ceramic, which has a certain degree of corrosion resistance and adsorption capacity, eliminating the need for frequent replacement.

[0027] like Figure 2 , 3 As shown, both the connection end of the grounding wire 12 to the device 23 and the connection end of the grounding body 11 use crimp terminals. The crimp terminals ensure a secure connection and improve connection stability. The grounding body 11 is cylindrical, with a spiral groove 22 on its outer surface. The cylindrical shape and the spiral groove 22 increase the contact area between the grounding body 11 and the soil, thus improving the grounding effect.

[0028] A sealing sleeve 19 is provided at the connection between the grounding wire 12 and the grounding body 11. The sealing sleeve 19 is made of rubber material. The sealing sleeve 19 can prevent moisture and corrosion at the connection, thus improving the protection capability of the connection.

[0029] like Figure 2 , 5 As shown, the inner layer 13 is an epoxy resin layer, which provides good basic protection and improves corrosion resistance. The middle layer 14 is a polyurethane layer, which enhances flexibility and wear resistance, improving the durability of the device. The outer layer 15 is a polytetrafluoroethylene (PTFE) layer. The PTFE layer provides corrosion resistance and water resistance, improving the overall protection level of the device.

[0030] The specific usage and function of this embodiment are as follows:

[0031] In use, the grounding electrode 11 is first buried underground to the appropriate depth as required. The cylindrical shape of the grounding electrode 11 and the spiral grooves 22 on its outer surface increase the contact area with the soil, thereby reducing grounding resistance and improving grounding effectiveness. Then, one end of the grounding wire 12 is connected to the grounding electrode 11. The crimped terminal at the connection end ensures a stable connection and good conductivity. The other end is connected to the equipment 23, and the same crimping method ensures reliable current conduction. During daily operation, the three-layer anti-corrosion outer layer of the grounding wire 12 plays a crucial role. The inner epoxy resin layer 13 provides basic protection, the middle polyurethane layer 14 enhances flexibility and wear resistance, and the outer polytetrafluoroethylene layer 15 provides excellent corrosion resistance and water resistance, preventing the grounding wire 12 from being damaged by external corrosive factors and extending its service life. When encountering humid environments or water accumulation, the drainage structure on the grounding electrode 11 begins to function. The evenly distributed drainage holes 24 on the surface of the drainage pipe 17 can drain accumulated water, and the sleeve-type installation ensures connection with the grounding body 11, improving drainage efficiency. The three-layer filter structure of the filter layer 18, with pores gradually decreasing in size from the outside to the inside, can block impurities from entering, ensuring smooth and pure drainage. Meanwhile, the sealing sleeve 19 at the connection between the grounding wire 12 and the grounding body 11 can prevent moisture and impurities from entering, ensuring the stability and corrosion resistance of the connection.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments.

Claims

1. A corrosion-resistant ultra-high voltage substation grounding device, comprising a grounding body (11) and a grounding wire (12), wherein one end of the grounding wire (12) is connected to the grounding body (11) and the other end is connected to equipment (23), characterized in that: The grounding wire (12) is provided with an anti-corrosion outer layer, which is a three-layer structure consisting of an inner layer (13), a middle layer (14), and an outer layer (15). The inner layer (13), the middle layer (14), and the outer layer (15) are wrapped around the grounding wire (12). The grounding body (11) is provided with a drainage structure, which includes a drainage pipe (17) and a filter layer (18).

2. The anti-corrosion ultra-high voltage substation grounding device according to claim 1, characterized in that: The surface of the drainage pipe (17) is evenly distributed with drainage holes (24). The drainage pipe (17) is sleeved on the grounding body (11). The space between the grounding body (11) and the drainage pipe (17) is filled with insulating material (21). The filter layer (18) is disposed on the pipe wall of the drainage pipe (17).

3. The anti-corrosion ultra-high voltage substation grounding device according to claim 2, characterized in that: The filter layer (18) has a three-layer structure, namely an outer filter, a middle filter and an inner filter, and the pore size of the filter gradually decreases from the outside to the inside.

4. The anti-corrosion ultra-high voltage substation grounding device according to claim 3, characterized in that: The connection end of the grounding wire (12) to the device (23) and the connection end of the grounding body (11) both adopt crimp terminals.

5. The anti-corrosion ultra-high voltage substation grounding device according to claim 1, characterized in that: The grounding body (11) is cylindrical, and its outer surface is provided with a spiral groove (22).

6. The anti-corrosion ultra-high voltage substation grounding device according to claim 5, characterized in that: A sealing sleeve (19) is provided at the connection between the grounding wire (12) and the grounding body (11), and the sealing sleeve (19) is made of rubber material.

7. A corrosion-resistant ultra-high voltage substation grounding device according to claim 6, characterized in that: The inner layer (13) is an epoxy resin layer, the middle layer (14) is a polyurethane layer, and the outer layer (15) is a polytetrafluoroethylene layer.

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