A copper mesh grounding assembly for lightning protection of a wind turbine blade

Abstract

The utility model provides a kind of copper mesh grounding assembly for wind power blade lightning protection, belong to wind power blade lightning protection field, including protection plate, the top of the protection plate swing connection has threaded column, the outer wall of threaded column is fixedly connected with bearing, the outer wall of bearing is fixedly connected with pressing plate, the bottom of the pressing plate is fixedly connected with flow guide copper mesh, the top of threaded column is fixedly connected with handle, the side of the protection plate is fixedly connected with external plate, the bottom of the external plate is fixedly connected with taper column. The utility model is provided with protection plate, threaded column, bearing, pressing plate, flow guide copper mesh, handle, external plate and taper column, the copper mesh grounding assembly for wind blade lightning protection can be used more conveniently, the copper mesh can be provided with good anti-rolling effect, the copper mesh can be provided with good support protection when heavy object rolls, the service life of the copper mesh grounding assembly is improved, and the long-term use of structure is beneficial.

Description

Technical Field

[0001] This utility model relates to the field of lightning protection for wind turbine blades, and more specifically, to a copper mesh grounding assembly for lightning protection of wind turbine blades. Background Technology

[0002] Lightning protection for wind turbine blades involves laying a metal conductor (such as aluminum or copper mesh) on the blade surface as a lightning rod to actively attract lightning current. Combined with an internal down conductor, the current is quickly conducted to the blade root and connected to the wind turbine's grounding system. Simultaneously, conductive materials in the fiberglass sandwich structure are used to balance the potential difference, preventing internal discharge within the blade. Finally, a low-resistance grounding device safely discharges the lightning current to the earth, thus avoiding catastrophic damage to the blades caused by lightning strikes, such as high-temperature ablation, structural delamination, or explosion. This ensures the stable operation of the wind turbine in thunderstorm environments. The copper mesh grounding assembly used for lightning protection of wind turbine blades is a key component in this system.

[0003] A search revealed that Chinese patent CN222282255U discloses a "copper mesh grounding assembly for lightning protection of wind turbine blades," which includes a bottom connector and a top connector connected to each other. The bottom connector includes a base plate, a protruding post, and a through hole, while the top connector includes a fixing plate and mounting holes. The top of the base plate has a first annular groove, and the fixing plate has a second annular groove. The first and second annular grooves in this invention can be used as pre-embedded grooves for embedding solder wire. After installation and fixing with the copper mesh, the solder wire is melted by high temperature and fills the area between the bottom and top connectors, effectively improving the stability between the copper mesh and the bottom and top connectors. It also improves the contact surface between the copper mesh and the bottom and top connectors. Furthermore, the solder wire can effectively seal and weld the edges between the bottom and top connectors, thereby reducing the overall structural resistance, reducing the risk of lightning breakdown, and improving conductivity. However, the following drawbacks still exist: (1) Most of the copper mesh grounding components for lightning protection of wind turbine blades on the market are not very convenient to use. They do not provide good anti-rolling effect for the copper mesh. If heavy objects pass by, the damage to the copper mesh will be increased. They do not provide good support and protection for the copper mesh, which reduces the service life of the copper mesh grounding components and is not conducive to the long-term use of the structure.

[0004] The lack of readily replaceable connecting straps necessitates the replacement of the entire structure upon strap damage, increasing overall operating costs and hindering long-term use. To address this, a copper mesh grounding assembly for lightning protection of wind turbine blades is proposed. Utility Model Content

[0005] The purpose of this utility model is to address the current problem of not providing anti-rollover protection.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: The present invention is as follows: a copper mesh grounding assembly for lightning protection of wind turbine blades, comprising a protective plate, a threaded column movably connected to the top of the protective plate, a bearing fixedly connected to the outer wall of the threaded column, a pressure plate fixedly connected to the outer wall of the bearing, and a current-guiding copper mesh fixedly connected to the bottom of the pressure plate.

[0007] A throttle is fixedly connected to the top of the threaded column, an external plate is fixedly connected to one side of the protective plate, and a cone column is fixedly connected to the bottom of the external plate. This makes the copper mesh grounding assembly for wind and lightning protection more convenient to use, provides good anti-crushing effect for the copper mesh, provides good support and protection for the copper mesh when it is crushed by heavy objects, and improves the service life of the copper mesh grounding assembly, which is beneficial to the long-term use of the structure.

[0008] As a preferred technical solution of this utility model, the top of the pressure plate is fixedly connected to an upper interface, and the length and width of the upper interface are both smaller than the length and width of the pressure plate.

[0009] As a preferred technical solution of this utility model, a lower bolt is movably connected to one side of the upper interface, and a metal connecting strip is movably connected to the outer wall of the lower bolt.

[0010] As a preferred technical solution of this utility model, an upper bolt is movably connected to one side of the metal connecting strip, and a protective opening is movably connected to the outer wall of the upper bolt.

[0011] As a preferred technical solution of this utility model, the outer wall of the threaded column is fixedly connected to the inner wall of the bearing, and there are four threaded columns and four bearings.

[0012] As a preferred technical solution of this utility model, the top of the flow guiding copper mesh is fixedly connected to the bottom of the pressure plate, and the length and width of the flow guiding copper mesh are both smaller than the length and width of the protective plate.

[0013] As a preferred technical solution of this utility model, the bottom of the outer plate is fixedly connected to the top of the cone column, and there are two outer plates, with two cone columns provided at the bottom of each outer plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By incorporating protective plates, threaded columns, bearings, pressure plates, current-conducting copper mesh, throttle, external connecting plates, and cone columns, the copper mesh grounding assembly for wind and lightning protection becomes more convenient to use. It provides excellent anti-rollover protection for the copper mesh and offers good support and protection against heavy objects rolling over it, thus extending the service life of the copper mesh grounding assembly and contributing to the long-term use of the structure. 2. The upper interface, lower bolt, metal connecting strip, upper bolt and protective port provide a quick-replaceable connecting strip. When the connecting strip is damaged, it can be quickly replaced, which reduces the subsequent use cost of the structure and is conducive to the long-term use of the structure. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of the copper mesh grounding assembly for lightning protection of wind turbine blades provided by this utility model; Figure 2 A bottom view of the copper mesh grounding assembly for lightning protection of wind turbine blades provided by this utility model; Figure 3 A top view of the copper mesh grounding assembly for lightning protection of wind turbine blades provided by this utility model; Figure 4 A rear view of the copper mesh grounding assembly for lightning protection of wind turbine blades provided by this utility model. Figure 5 This is a right-side view of the copper mesh grounding assembly for lightning protection of wind turbine blades provided by this utility model.

[0016] The diagram shows: 1. Protective plate; 2. Threaded post; 3. Bearing; 4. Pressure plate; 5. Guide copper mesh; 6. Throttle; 7. External plate; 8. Tapered post; 9. Upper interface; 10. Lower bolt; 11. Metal connecting strip; 12. Upper bolt; 13. Protective opening. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0018] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0019] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] As shown in 1-5, this embodiment proposes a copper mesh grounding assembly for lightning protection of wind turbine blades, including a protective plate 1, a threaded post 2 movably connected to the top of the protective plate 1, a bearing 3 fixedly connected to the outer wall of the threaded post 2, a pressure plate 4 fixedly connected to the outer wall of the bearing 3, and a current-conducting copper mesh 5 fixedly connected to the bottom of the pressure plate 4.

[0022] A handle 6 is fixedly connected to the top of the threaded column 2, an external plate 7 is fixedly connected to one side of the protective plate 1, and a cone column 8 is fixedly connected to the bottom of the external plate 7. This makes the copper mesh grounding assembly for wind and lightning protection more convenient to use, provides good anti-crushing effect for the copper mesh, provides good support and protection for the copper mesh when heavy objects crush it, and improves the service life of the copper mesh grounding assembly, which is beneficial to the long-term use of the structure.

[0023] As shown in 1-5, in a preferred embodiment, based on the above method, the top of the pressure plate 4 is fixedly connected to an upper interface 9, and the length and width of the upper interface 9 are both smaller than the length and width of the pressure plate 4, which facilitates the connection of other working parts and also facilitates disassembly. A lower bolt 10 is movably connected to one side of the upper interface 9, and a metal connecting strip 11 is movably connected to the outer wall of the lower bolt 10 to facilitate the conduction of current. An upper bolt 12 is movably connected to one side of the metal connecting strip 11, and a protective opening 13 is movably connected to the outer wall of the upper bolt 12 to facilitate the connection of the two ends.

[0024] The outer wall of the threaded column 2 is fixedly connected to the inner wall of the bearing 3, and there are four threaded columns 2 and four bearings 3, which allows the flow guiding copper mesh 5 to reach the appropriate position. The top of the flow guiding copper mesh 5 is fixedly connected to the bottom of the pressure plate 4, and the length and width of the flow guiding copper mesh 5 are smaller than the length and width of the protective plate 1. The bottom of the outer plate 7 is fixedly connected to the top of the cone column 8. There are two outer plates 7, and each outer plate 7 has two cone columns 8 at its bottom, which provides support for the structure.

[0025] Specifically, when using this copper mesh grounding assembly for lightning protection of wind turbine blades: the metal connecting strip 11 is locked to the upper interface 9 by the lower bolt 10, which also makes the metal connecting strip 11 contact the current-conducting copper mesh 5. The metal connecting strip 11 is passed through the protective plate 1, and the outer plate 7 is hammered to make the cone column 8 nail into the working position. At this time, the handle 6 is turned to make the threaded column 2 rotate, which makes the current-conducting copper mesh 5 move downward to contact the ground. Then, the metal connecting strip 11 is connected to the inside of the protective opening 13, and the upper bolt 12 is locked to the lightning protection connection of the wind turbine blade. After the soil is backfilled, the protective plate 1 can provide the top of the structure with anti-crushing protection, and the cone column 8 can provide support for the structure.

[0026] All technical features in this embodiment can be freely combined according to actual needs.

[0027] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A copper mesh grounding assembly for lightning protection of wind turbine blades, comprising a protective plate (1), characterized in that, The top of the protective plate (1) is movably connected to a threaded column (2), the outer wall of the threaded column (2) is fixedly connected to a bearing (3), the outer wall of the bearing (3) is fixedly connected to a pressure plate (4), and the bottom of the pressure plate (4) is fixedly connected to a flow guiding copper mesh (5). A throttle (6) is fixedly connected to the top of the threaded column (2), an external plate (7) is fixedly connected to one side of the protective plate (1), and a cone column (8) is fixedly connected to the bottom of the external plate (7).

2. The copper mesh grounding assembly for lightning protection of wind turbine blades according to claim 1, characterized in that, The top of the pressure plate (4) is fixedly connected to an upper interface (9), and the length and width of the upper interface (9) are both smaller than the length and width of the pressure plate (4).

3. The copper mesh grounding assembly for lightning protection of wind turbine blades according to claim 2, characterized in that, A lower bolt (10) is movably connected to one side of the upper interface (9), and a metal connecting strip (11) is movably connected to the outer wall of the lower bolt (10).

4. A copper mesh grounding assembly for lightning protection of wind turbine blades according to claim 3, characterized in that, One side of the metal connecting strip (11) is movably connected to an upper bolt (12), and the outer wall of the upper bolt (12) is movably connected to a protective opening (13).

5. A copper mesh grounding assembly for lightning protection of wind turbine blades according to claim 1, characterized in that, The outer wall of the threaded column (2) is fixedly connected to the inner wall of the bearing (3), and there are four threaded columns (2) and four bearings (3).

6. A copper mesh grounding assembly for lightning protection of wind turbine blades according to claim 1, characterized in that, The top of the flow guiding copper mesh (5) is fixedly connected to the bottom of the pressure plate (4), and the length and width of the flow guiding copper mesh (5) are both smaller than the length and width of the protective plate (1).

7. A copper mesh grounding assembly for lightning protection of wind turbine blades according to claim 1, characterized in that, The bottom of the outer plate (7) is fixedly connected to the top of the cone (8). There are two outer plates (7), and each outer plate (7) has two cones (8) at its bottom.

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