Novel grounding metal net connecting structure of blade lightning protection system

Abstract

The utility model relates to the field of blade lightning protection systems, and particularly discloses a novel blade lightning protection system grounding metal net connecting structure which comprises a main metal net laid on the surface of a blade, a grounding structure metal net attached to the main metal net, a grounding structure metal plate arranged on one side of the grounding structure metal net and a lightning arrester. The grounding structure metal plate is of a thin plate structure and comprises a first metal plate body and a second metal plate body, the first metal plate body and the second metal plate body are located on the two sides of the grounding structure metal net respectively, and the first metal plate body and the second metal plate body are oppositely arranged. The lightning arrester sequentially penetrates through the first metal plate, the grounding structure metal net and the second metal plate.

Description

Technical Field

[0001] This utility model relates to the technical field of blade lightning protection systems, and in particular to a novel grounding metal mesh connection structure for blade lightning protection systems. Background Technology

[0002] With the development of wind power generation, the size of wind turbine blades has reached the hundreds of meters level, and the probability of being struck by lightning during operation is also increasing. As an important protection system for wind turbine blades, the rationality of the structure and the reliability of the connection of the lightning protection system are crucial to improving the safe operation of the blades.

[0003] As the connecting carrier between the metal mesh and the down conductor in a lightning protection system, the metal mesh grounding structure plays a crucial role in current conduction. Currently, the main form of metal mesh grounding structure is a metal mesh plus metal components. The metal components clamp the metal mesh by riveting or screwing, and then a lightning arrester connects the metal components to the metal base on the down conductor to form a current loop. With riveting, there is only good contact between the metal mesh and the metal components at the riveting points, while with screwing, the metal components need to be thicker due to the threaded connection. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a novel grounding metal mesh connection structure for blade lightning protection systems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A novel grounding metal mesh connection structure for a blade lightning protection system includes a main metal mesh laid on the blade surface, a grounding structure metal mesh arranged in close contact with the main metal mesh, a grounding structure metal plate disposed on one side of the grounding structure metal mesh, and a lightning arrester. The grounding structure metal plate is a thin plate structure, comprising a metal plate one and a metal plate two, which are respectively located on both sides of the grounding structure metal mesh and are arranged opposite to each other. The lightning arrester passes through the metal plate two, the grounding structure metal mesh, and the metal plate one in sequence.

[0007] Preferably, both the first metal plate and the second metal plate have a circular hole in the middle to facilitate the passage of the lightning arrester.

[0008] Preferably, both the first metal plate and the second metal plate are circular plates.

[0009] Preferably, a positioning component is provided between the first metal plate and the second metal plate.

[0010] Preferably, the positioning component includes a protrusion one disposed on one side of the first metal plate and a protrusion two disposed on one side of the second metal plate, wherein the protrusion one and the protrusion two are matched.

[0011] Preferably, the first protrusion is cylindrical and the second protrusion is annular.

[0012] Preferably, the first protrusion is triangular prism-shaped, and the second protrusion is V-shaped.

[0013] Preferably, the positioning component includes a protrusion three on one side of the first metal plate and a through hole on the second metal plate, wherein the protrusion three and the through hole are matched.

[0014] Preferably, the protrusion is cylindrical and the through hole is circular.

[0015] Preferably, the protrusion three is semi-cylindrical, and the through hole is semi-circular.

[0016] The beneficial effects of this utility model are as follows: using a thin metal plate and solder paste, the solder paste is applied to both sides of the metal mesh in a certain shape, and then a metal plate of the same shape is placed on both sides of the metal mesh. Corresponding to the position of the solder paste, a pressure device is used to apply a certain pressure between the metal plate and the metal mesh and heat it to melt the solder paste. The melted solder paste wets the metal mesh and connects the metal plates on both sides of the metal mesh together. In this way, the metal plate can be fixed on the metal mesh and effective surface contact can be ensured. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the use of a novel grounding metal mesh connection structure for a blade lightning protection system proposed in this utility model.

[0018] Figure 2 for Figure 1 Sectional view at AA;

[0019] Figure 3 This is a schematic diagram of the grounding structure metal mesh;

[0020] Figure 4 This is a schematic diagram of the structure of metal plate one and metal plate two in Embodiment 1;

[0021] Figure 5 This is a schematic diagram of the structure of metal plate one and metal plate two in Embodiment 2;

[0022] Figure 6 This is a schematic diagram of the structure of metal plate one and metal plate two in Embodiment 3;

[0023] Figure 7 This is a schematic diagram of the structure of metal plate one and metal plate two in Embodiment 4.

[0024] In the diagram: 1 Main metal mesh, 2 Grounding structure metal mesh, 3 Grounding structure metal plate, 31 Metal plate one, 32 Metal plate two, 4 Lightning arrester, 5 Positioning component, 51 Protrusion one, 52 Protrusion two, 53 Protrusion three, 54 Through hole. Detailed Implementation

[0025] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms center, up, down, left, right, vertical, horizontal, inner, and outer, indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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. In addition, the terms first, second, and third are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] Please refer to Figure 1-7 A novel grounding metal mesh connection structure for a blade lightning protection system includes a main metal mesh 1 laid on the blade surface, a grounding structure metal mesh 2 arranged in close contact with the main metal mesh 1, a grounding structure metal plate 3 disposed on one side of the grounding structure metal mesh 2, and a lightning arrester 4. The grounding structure metal plate 3 is a thin plate structure, and the grounding structure metal plate 3 includes a first metal plate 31 and a second metal plate 32. The first metal plate 31 and the second metal plate 32 are respectively located on both sides of the grounding structure metal mesh 2, and the first metal plate 31 and the second metal plate 32 are arranged opposite to each other. The lightning arrester 4 passes through the second metal plate 32, the grounding structure metal mesh 2, and the first metal plate 31 in sequence and is then connected to a metal base.

[0028] In use, solder paste is applied to both sides of the grounding structure metal mesh 2 in a specific shape. Then, grounding structure metal plates 3 of the same shape are placed on both sides of the grounding structure metal mesh 2, corresponding to the position of the solder paste. A pressure device is used to apply pressure between the grounding structure metal plates 3 and the grounding structure metal mesh 2, and heating is applied to melt the solder paste. The solder paste is located between metal plate 1 31 and metal plate 2 32. The melted solder paste wets the grounding structure metal mesh 2 and connects metal plates 31 and 32 on both sides of the grounding structure metal mesh 2 together. In this way, the grounding structure metal plate 3 is fixed to the grounding structure metal mesh 2, ensuring effective surface contact.

[0029] As an example, both the first metal plate 31 and the second metal plate 32 are circular plates.

[0030] Both the first metal plate 31 and the second metal plate 32 have a round hole in the middle to facilitate the passage of the lightning arrester 4.

[0031] A positioning component 5 is provided between the first metal plate 31 and the second metal plate 32 to facilitate the alignment of the first metal plate 31 and the second metal plate 32.

[0032] The positioning component 5 includes a protrusion 51 on one side of the metal plate 31 and a protrusion 52 on one side of the metal plate 32, wherein the protrusion 51 and the protrusion 52 are matched.

[0033] Example 1: As Figure 4 The first protrusion 51 is cylindrical, and the second protrusion 52 is annular.

[0034] Example 2: Figure 5 The first protrusion 51 is triangular prism and the second protrusion 52 is V-shaped. The triangular prism shape can facilitate the alignment of the first protrusion 51 and the second protrusion 52, and also prevent the first protrusion 51 and the second protrusion 52 from being misaligned during hot pressing.

[0035] The positioning component 5 includes a protrusion 53 on one side of the metal plate 31 and a through hole 54 on the metal plate 32, wherein the protrusion 53 and the through hole 54 are matched.

[0036] Example 3: Figure 6 The protrusion 53 is cylindrical, and the through hole 54 is circular.

[0037] Example 4: Figure 7 The protrusion 3 53 is semi-cylindrical, and the through hole 54 is semi-circular. The semi-circular through hole 54 can facilitate the alignment of the protrusion 1 51 and the protrusion 2 52, and also prevent the protrusion 1 51 and the protrusion 2 52 from being misaligned during hot pressing.

[0038] This patent uses a metal solder paste to create a metal mesh grounding structure. By utilizing the semi-solid characteristics of the solder paste and the low melting point and high conductivity of tin, a metal connection structure is created on the metal mesh. This structure can ensure surface contact with a low thickness, and can effectively conduct current.

[0039] This metal mesh grounding structure utilizes the semi-solid properties of solder paste, which can be applied to both sides of the metal mesh. When the solder paste melts, it can pass through the holes in the metal mesh, connecting the upper and lower metal plates together to form a clamp structure with the metal mesh. The connection is filled with molten solder, providing sufficient contact area for current conduction.

[0040] This metal mesh grounding structure can ensure effective surface contact while reducing the thickness of the metal parts. It can effectively improve the problems of small contact area or excessive thickness of current metal mesh grounding structures, and significantly improve the stability of the connection structure and the current conduction capacity at the connection.

Claims

1. A novel grounding metal mesh connection structure for a blade lightning protection system, characterized in that, The device includes a main metal mesh (1) laid on the surface of the blade, a grounding structure metal mesh (2) arranged in close contact with the main metal mesh (1), a grounding structure metal plate (3) disposed on one side of the grounding structure metal mesh (2), and a lightning arrester (4). The grounding structure metal plate (3) is a thin plate structure. The grounding structure metal plate (3) includes a metal plate one (31) and a metal plate two (32). The metal plate one (31) and the metal plate two (32) are respectively located on both sides of the grounding structure metal mesh (2) and are arranged opposite to each other. Solder paste is applied to both sides of the grounding structure metal mesh (2) and is located between the metal plate one (31) and the metal plate two (32), and is heated and pressed together. The lightning arrester (4) passes through the metal plate two (32), the grounding structure metal mesh (2), and the metal plate one (31) in sequence.

2. The grounding metal mesh connection structure of a novel blade lightning protection system according to claim 1, characterized in that, Both the first metal plate (31) and the second metal plate (32) have a circular hole in the middle.

3. The grounding metal mesh connection structure of a novel blade lightning protection system according to claim 1, characterized in that, Both the first metal plate (31) and the second metal plate (32) are circular plates.

4. The grounding metal mesh connection structure of a novel blade lightning protection system according to claim 1, characterized in that, A positioning component (5) is provided between the first metal plate (31) and the second metal plate (32).

5. The grounding metal mesh connection structure of a novel blade lightning protection system according to claim 4, characterized in that, The positioning component (5) includes a protrusion 1 (51) provided on one side of the metal plate 1 (31) and a protrusion 2 (52) provided on one side of the metal plate 2 (32), and the protrusion 1 (51) and the protrusion 2 (52) are matched.

6. The grounding metal mesh connection structure of a novel blade lightning protection system according to claim 5, characterized in that, The first protrusion (51) is cylindrical, and the second protrusion (52) is annular.

7. The grounding metal mesh connection structure of a novel blade lightning protection system according to claim 5, characterized in that, The first protrusion (51) is triangular prism, and the second protrusion (52) is V-shaped.

8. The grounding metal mesh connection structure of a novel blade lightning protection system according to claim 4, characterized in that, The positioning component (5) includes a protrusion three (53) provided on one side of the metal plate one (31) and a through hole (54) provided on the metal plate two (32), wherein the protrusion three (53) and the through hole (54) are matched.

9. The grounding metal mesh connection structure of a novel blade lightning protection system according to claim 8, characterized in that, The protrusion (53) is cylindrical, and the through hole (54) is circular.

10. The grounding metal mesh connection structure of a novel blade lightning protection system according to claim 8, characterized in that, The protrusion (53) is semi-cylindrical, and the through hole (54) is semi-circular.

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