Wind power blade tip lightning arrester

Abstract

The utility model relates to the technical field of wind power generation equipment, in particular to a wind power blade tip lightning arrester. A wind power blade tip lightning arrester comprises a blade body, a first fixing groove is formed in the upper surface of a blade tip of the blade body, a first mounting assembly is arranged on the upper surface of the blade tip of the blade body, and a second mounting assembly is arranged on the lower surface of the blade tip of the blade body. The same side ends of the first metal lightning protection plate and the second lightning protection metal plate are connected with a lightning protection mechanism. According to the utility model, mounting holes are prevented from being formed in the surface of the blade main body, the integrity and strength of the blade main body are ensured, the practicability of the device is improved, the resistance of the device can be reduced, the rotation of the blade main body is easier, the influence of the device on the blade main body is reduced, and meanwhile, the lightning rod is more convenient to mount and replace; and the replacement flexibility of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation equipment, in particular to a lightning protection device for the tip of a wind power blade. Background Art

[0002] The blades are the most exposed components of a wind turbine. As they are used for a longer time, more pollutants and rainwater adhere to the surface, which enhances the conductivity of the blades and makes the blade tips vulnerable to lightning strikes.

[0003] In the prior art, there is a wind turbine blade tip lightning arrester with application number: CN202221645207.0, which relates to the field of lightning arresters. The wind turbine blade tip lightning arrester includes a blade tip body and a metal lightning arrester, the metal lightning arrester is symmetrically arranged on the outer side of the blade tip body, and a number of evenly distributed mounting holes are arranged on the blade tip body and near the edge. A diffusion component is arranged on the outer side of the metal lightning arrester, and the diffusion component includes a U-shaped belt, a side belt and an annular belt. A rubber sleeve is arranged on the inner side of the metal lightning arrester, and a lightning rod is arranged on the right side of the metal lightning arrester for guiding the lightning current. Although the utility model can quickly diffuse the lightning current, thereby reducing the instantaneous current intensity on the outer side of the blade tip, preventing the blade tip from being easily broken down due to excessive instantaneous current, and improving the protection effect of the blade tip, the utility model needs to open a mounting hole on the blade, which is easy to affect the strength and integrity of the blade, and the construction is relatively complicated, which is easy to increase the resistance to the rotation of the blade, and the lightning rod cannot be flexibly replaced. Utility Model Content

[0004] In view of the existing problems, the utility model provides a wind turbine blade tip lightning protection device to solve the problem that a wind turbine blade tip lightning protection device mentioned in the background technology needs to open an installation hole on the blade during installation, which easily affects the strength and integrity of the blade, and the construction is relatively complicated, which easily increases the resistance to blade rotation, and at the same time, the lightning rod cannot be flexibly replaced.

[0005] In order to solve the existing problems, the utility model provides a wind turbine blade tip lightning protection device, including a blade body, a first fixing groove is provided on the upper surface of the blade tip of the blade body, a first mounting assembly is arranged on the upper surface of the blade tip of the blade body, and a second mounting assembly is arranged on the lower surface of the blade tip of the blade body; the first mounting assembly includes a first metal lightning protection plate, two mounting grooves are symmetrically provided on the first metal lightning protection plate, a plurality of flash connectors are installed in the two mounting grooves, a flash connector is installed between the two mounting grooves and on the upper surface of the first metal lightning protection plate, a group of fixing bolts are symmetrically provided on the first metal lightning protection plate, a first clamping block and a second clamping block are arranged on the lower surface of the first metal lightning protection plate, and the first clamping block is clamped with the first fixing groove; the second mounting assembly includes a second metal lightning protection plate, bolt holes corresponding to a group of fixing bolts are symmetrically provided on the second metal lightning protection plate, a second fixing groove is provided on the upper surface of the second metal lightning protection plate, and the second fixing groove is clamped with the second clamping block; the first metal lightning protection plate and the second lightning protection metal plate are connected with a lightning protection mechanism on the same side ends.

[0006] Furthermore, the lightning protection mechanism includes a first fixed block and a second fixed block fixedly connected to the same side ends of the first metal lightning protection plate and the second lightning protection metal plate, and the same side ends of the first fixed block and the second fixed block are connected to a mounting block by bolts, and one side end of the mounting block is connected to a lightning rod.

[0007] Furthermore, the first clamping block is located on one side of the second clamping block, and the fixing bolt is located on one side of the mounting groove.

[0008] Furthermore, first spoilers are symmetrically connected to one end of the first metal lightning protection plate and located on both sides of the first fixing block, and second spoilers are symmetrically connected to one end of the second metal lightning protection plate and located on both sides of the second fixing block.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] First, the blade body is clamped by the first metal lightning arrester and the second metal lightning arrester, so that the first clamping block is clamped with the first fixing groove, and the second clamping block is clamped with the second fixing groove, so that the first metal lightning arrester and the second metal lightning arrester are spliced, and the first fixing bolt is passed through the bolt hole and fastened with a nut to fix the first metal lightning arrester and the second metal lightning arrester, so that the blade is tightly clamped, and at the same time, it is avoided to open a mounting hole on the surface of the blade body, thereby ensuring the integrity of the blade body and increasing the practicality of the device.

[0011] Secondly, the arc-shaped first spoiler and the second spoiler can reduce the resistance of the device, making the rotation of the blade body easier and reducing the impact of the device on the blade body.

[0012] Third, the mounting block is connected to the first fixing block and the second fixing block by bolts, and the lightning rod is installed on the mounting block. When replacing the lightning rod, the lightning rod can be removed by simply removing the mounting block by the bolts, thereby increasing the flexibility of replacing the device accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the first installation component of the utility model;

[0016] Figure 4 For this utility model Figure 2 A magnified image of point A;

[0017] Figure 5 For this utility model Figure 1 The enlarged view of point B;

[0018] Explanation of the reference numerals in the figure: 1. blade body; 2. first fixing groove; 3. first metal lightning arrester; 4. mounting groove; 5. lightning arrester column; 6. lightning arrester; 7. fixing bolt; 8. first clamping block; 9. second clamping block; 10. second metal lightning arrester; 11. bolt hole; 12. second fixing groove; 13. first fixing block; 14. second fixing block; 15. bolt; 16. mounting block; 17. lightning rod; 18. first spoiler; 19. second spoiler; DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-5A wind turbine blade tip lightning protection device, comprising a blade body 1, a first fixing groove 2 is provided on the blade tip upper surface of the blade body 1, a first mounting assembly is provided on the blade tip upper surface of the blade body 1, a second mounting assembly is provided on the blade tip lower surface of the blade body 1, the first mounting assembly comprises a first metal lightning protection plate 3, two mounting grooves 4 are symmetrically provided on the first metal lightning protection plate 3, a plurality of lightning arrester columns 5 are installed in the two mounting grooves 4, a lightning arrester 6 is installed between the two mounting grooves 4 and on the upper surface of the first metal lightning protection plate 3, the first metal lightning protection plate 3 is symmetrically provided with a group of fixing bolts 7, the lower surface of the first metal lightning protection plate 3 is provided with a first clamping block 8 and a second clamping block 9, the first clamping block 8 is clamped with the first fixing groove 2, the second mounting assembly includes a second metal lightning protection plate 10, the second metal lightning protection plate 10 is symmetrically provided with bolt holes 11 adapted to a group of fixing bolts 7, the upper surface of the second metal lightning protection plate 10 is provided with a second fixing groove 12, the second fixing groove 12 is clamped with the second clamping block 9, and the first metal lightning protection plate 3 and the second lightning protection metal plate 10 are connected with a lightning protection mechanism on the same side ends.

[0021] Among them, the lightning protection mechanism includes a first fixed block 13 and a second fixed block 14 fixedly connected to the same side ends of the first metal lightning protection plate 3 and the second lightning protection metal plate 10, and the same side ends of the first fixed block 13 and the second fixed block 14 are connected to a mounting block 16 by bolts 15, and one side end of the mounting block 16 is connected to a lightning rod 17.

[0022] The mounting block 16 is connected to the same side ends of the first fixing block 13 and the second fixing block 14 by bolts 15, and the lightning rod 17 is installed on one side end of the mounting block 16. When the lightning rod is replaced and repaired later, the mounting block 16 can be directly disassembled, and the replacement and disassembly is flexible, convenient and fast.

[0023] The first clamping block 8 is located on one side of the second clamping block 9 , and the fixing bolt 7 is located on one side of the mounting groove 4 .

[0024] Among them, the first spoiler 18 is symmetrically connected to the two sides of the first fixing block 13 and one end of the first metal lightning protection plate 3, and the second spoiler 19 is symmetrically connected to the two sides of the second fixing block 14 and one end of the second metal lightning protection plate 10.

[0025] The arc-shaped first spoiler 18 and the second spoiler 19 can reduce the resistance of the device, make the rotation of the blade body easier, and reduce the influence of the device on the blade body.

[0026] During installation, the tip of the blade body 1 is first clamped by the first metal lightning arrester 3 and the second metal lightning arrester 10, so that the first clamping block 8 is clamped with the first fixing groove 2, and the second clamping block 9 is clamped with the second fixing groove 12, so that the first metal lightning arrester 3 and the second metal lightning arrester 10 are spliced, and a group of fixing bolts 7 are passed through the bolt holes 11 and then the bolts are tightened with nuts to fix the first metal lightning arrester 3 and the second metal lightning arrester 10, thereby tightly clamping the tip of the blade body 1, and the first spoiler 18 and the second spoiler 19 connected to the same side ends of the first metal lightning arrester 3 and the second metal lightning arrester 10 can reduce the resistance of the device and make the rotation of the blade body 1 easier, and then the mounting block 16 is connected to the first fixing block 13 and the second fixing block 14 by bolts 15, so that the lightning rod 17 connected to the mounting block 16 is also installed on the entire device.

[0027] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A wind turbine blade tip lightning protection device, comprising a blade body (1), wherein the blade tip upper surface of the blade body (1) is provided with a first fixing groove (2), characterized in that: The upper surface of the blade tip of the blade body (1) is provided with a first mounting component, and the lower surface of the blade tip of the blade body (1) is provided with a second mounting component; The first mounting assembly comprises a first metal lightning arrester (3), two mounting grooves (4) are symmetrically provided on the first metal lightning arrester (3), a plurality of lightning arrester columns (5) are installed in the two mounting grooves (4), a lightning arrester (6) is installed between the two mounting grooves (4) and on the upper surface of the first metal lightning arrester (3), a group of fixing bolts (7) are symmetrically arranged on the first metal lightning arrester (3), a first clamping block (8) and a second clamping block (9) are arranged on the lower surface of the first metal lightning arrester (3), and the first clamping block (8) is clamped with the first fixing groove (2); The second mounting assembly comprises a second metal lightning arrester plate (10), the second metal lightning arrester plate (10) is symmetrically provided with bolt holes (11) adapted to a group of fixing bolts (7), the upper surface of the second metal lightning arrester plate (10) is provided with a second fixing groove (12), and the second fixing groove (12) is clamped with a second clamping block (9); The same side ends of the first metal lightning protection plate (3) and the second metal lightning protection plate (10) are connected to a lightning protection mechanism.

2. A wind turbine blade tip lightning protection device according to claim 1, characterized in that: The lightning protection mechanism comprises a first fixing block (13) and a second fixing block (14) fixedly connected to the ends on the same side of a first metal lightning protection plate (3) and a second metal lightning protection plate (10); the ends on the same side of the first fixing block (13) and the second fixing block (14) are connected to a mounting block (16) via bolts (15); and one side end of the mounting block (16) is connected to a lightning rod (17).

3. A wind turbine blade tip lightning protection device according to claim 1, characterized in that: The first clamping block (8) is located on one side of the second clamping block (9), and the fixing bolt (7) is located on one side of the installation groove (4).

4. A wind turbine blade tip lightning protection device according to claim 2, characterized in that: A first spoiler (18) is symmetrically connected to one end of the first metal lightning protection plate (3) and located on both sides of the first fixing block (13). A second spoiler (19) is symmetrically connected to one end of the second metal lightning protection plate (10) and located on both sides of the second fixing block (14).

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