Lightning protection metal net blade

Abstract

The utility model relates to the field of wind power blades, and mainly discloses a lightning protection metal net blade which comprises a blade body and a blade root, a first assembly ring and a second assembly ring are fixedly installed outside the blade body, a metal net is further laid on the outer surface of the blade body, a fixing seat is fixedly installed on the outer wall of the second assembly ring, a lightning arrester is installed on the fixing seat, and the lightning arrester is fixedly installed on the blade root. And communicating pipes are further arranged on the inner walls of the first assembling ring and the second assembling ring in a penetrating mode, an assembling base is fixedly connected to the end, away from the blade body, of the blade root, and a stabilizing piece is fixedly installed in the assembling base. The lightning arresters are further installed at the positions close to the blade tips, the risk that the blade tips are struck by lightning can be reduced, the grounding wires used for leading out lightning stroke current on the metal nets and the lightning arresters can be stabilized through the stabilizing pieces, shaking of the grounding wires in the rotating process of the blade is avoided, and the service life of the blade is prolonged. And meanwhile, a clamping block arranged in the stabilizing piece can be adjusted, and grounding wires of different thicknesses can be stably clamped.

Description

Technical Field

[0001] The utility model relates to the field of wind power blades, in particular to a lightning protection metal mesh blade. Background Art

[0002] With the rapid development of modern industry, lightning protection has become a crucial component in ensuring the safe operation of facilities. As a key component of lightning protection systems, metal mesh, with its excellent conductivity and mechanical strength, is widely used to capture and disperse lightning. The innovative design of blade metal mesh effectively reduces the concentrated release of lightning caused by the tip effect, thereby improving the effectiveness of lightning protection systems.

[0003] When laying the existing metal mesh on the surface of the blade, it can often only be laid on most areas of the blade body. The blade tip is the farthest part from the wind turbine and is most likely to be struck by lightning during operation. It is not convenient to lay the metal mesh in all directions on the tip of the blade, and the blade tip itself is conical in shape. Therefore, the metal mesh needs to be laid in a cover frame shape. During the rotation of the blade, there is a high risk of falling off due to centrifugal force. Therefore, metal mesh is generally not set at the blade tip. When the metal mesh on the surface of the blade is struck by lightning, the current will be led down through the grounding wire. Therefore, a grounding wire will also be laid inside the blade, and the grounding wire will eventually go out through the blade root. At this time, the grounding wire needs to be stabilized at the blade root, otherwise the grounding wire will shake as the blade rotates, and may eventually become loose.

[0004] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0005] The purpose of the present utility model is to provide a lightning protection metal mesh blade to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A lightning protection metal mesh blade comprises a blade body, wherein the end of the blade body away from the blade tip is integrally connected to the blade root, a first assembly ring and a second assembly ring are fixedly installed on the outside of the blade body, the first assembly ring is arranged close to the blade root, and a metal mesh is also laid on the outer surface of the blade body, the two ends of the metal mesh are respectively connected to the first assembly ring and the second assembly ring, a fixing seat is fixedly installed on the outer wall of the second assembly ring, a lightning rod is installed on the fixing seat, and the lightning rod is connected to the second assembly ring, a connecting pipe is also passed through the inner walls of the first and second assembly rings, the connecting pipe is arranged to pass through the outer wall of the blade body at one end away from the second assembly ring, the end of the blade root away from the blade body is fixedly connected to the assembly seat, and a stabilizing member is fixedly installed inside the assembly seat.

[0008] Furthermore, the first assembly ring and the second assembly ring are both provided with connection grooves, the ends of the metal mesh are melt-welded in the connection grooves, and the fixing seat is provided with fixing holes.

[0009] Furthermore, an assembly sleeve is integrally provided on the fixing seat, the bottom of the lightning rod is fixedly installed in the assembly sleeve, a connecting rod is also provided between the fixing seats on the outer wall of the second assembly ring, a fixing block is fixedly installed in the middle of the outer wall of the second assembly ring, the connecting rod passes through the fixing block, an arc groove is also provided on the fixing seat, the end of the connecting rod is arranged in the arc groove, and a locking nail is also installed on the fixing seat.

[0010] Furthermore, the stabilizing member includes an annular plate fixedly mounted inside the assembly seat, a first annular seat fixedly mounted inside the annular plate, a second annular seat coaxially arranged with the first annular seat is also provided inside the assembly seat, a plurality of clamping blocks are installed between the first annular seat and the second annular seat, an extension block is integrally provided on the side of the clamping block away from the center of the first annular seat and the second annular seat, an assembly rod is passed through the extension block, and both ends of the assembly rod are connected to the first annular seat and the second annular seat.

[0011] Furthermore, a plurality of sliding holes are opened at the center of the upper edge of the first annular seat, and a plurality of strip holes are opened at the center of the upper edge of the second annular seat. The strip holes are scattered on the second annular seat, and the two ends of the assembly rod pass through the sliding holes and the strip holes respectively. The two end portions of the assembly rod are also fixedly installed with retaining rings, and the retaining rings are tightly arranged against an end surface of the first annular seat and the second annular seat away from each other.

[0012] Furthermore, a protrusion is integrally provided on the outer side wall of the second annular seat, a screw sleeve is fixedly installed inside the protrusion, a bolt is threadedly installed inside the screw sleeve, and a wear-resistant ring is fixedly installed on one end face of the first annular seat facing the second annular seat.

[0013] Compared with the existing technology, the utility model has the following beneficial effects: the utility model lays the metal mesh on the surface of the blade, which can reduce the risk of the blade itself being struck by lightning. At the same time, a lightning rod is installed near the tip of the blade, which can reduce the risk of the blade tip being struck by lightning. The grounding wire used to lead the lightning current from the metal mesh and the lightning rod can be stabilized by a stabilizer to avoid the shaking of the grounding wire during the rotation of the blade. At the same time, the clamping block arranged inside the stabilizer can be adjusted to stably clamp the grounding wires of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a structural diagram of a lightning protection metal mesh blade according to an embodiment of the present utility model;

[0016] Figure 2 This is a structural schematic diagram of a second assembly ring in a lightning protection metal mesh blade according to an embodiment of the present utility model;

[0017] Figure 3 This is a structural schematic diagram of a fixing seat in a lightning protection metal mesh blade according to an embodiment of the present utility model;

[0018] Figure 4 This is a schematic structural diagram of a blade root in a lightning protection metal mesh blade according to an embodiment of the present utility model;

[0019] Figure 5 This is a schematic structural diagram of a stabilizing member in a lightning protection metal mesh blade according to an embodiment of the present utility model;

[0020] Figure 6 This is a structural schematic diagram of a first annular seat in a lightning protection metal mesh blade according to an embodiment of the present utility model;

[0021] Figure 7 This is a structural schematic diagram of a second annular seat in a lightning protection metal mesh blade according to an embodiment of the present utility model;

[0022] Figure 8 The figure is a schematic structural diagram of a lightning protection metal mesh blade clamp according to an embodiment of the present utility model.

[0023] Reference numerals:

[0024] 1. Blade body; 2. Blade root; 3. First assembly ring; 4. Second assembly ring; 401. Connecting pipe; 5. Metal mesh; 6. Connecting groove; 7. Fixing seat; 8. Lightning receptor; 9. Fixing block; 10. Connecting rod; 11. Fixing hole; 12. Assembly sleeve; 13. Arc groove; 14. Locking pin; 15. Assembly seat; 16. Stabilizer; 17. Annular plate; 18. First annular seat; 19. Second annular seat; 20. Clamping block; 21. Extension block; 22. Assembly rod; 23. Retaining ring; 24. Sliding hole; 25. Strip hole; 26. Bump; 27. Screw sleeve; 28. Bolt; 29. ​​Wear ring. DETAILED DESCRIPTION

[0025] Below, the utility model is further described with reference to the accompanying drawings and specific embodiments:

[0026] See also Figure 1-8 According to an embodiment of the present utility model, a lightning protection metal mesh blade includes a blade body 1, wherein the end of the blade body 1 away from the blade tip is integrally connected to the blade root 2, and a first assembly ring 3 and a second assembly ring 4 are fixedly installed on the outside of the blade body 1. The first assembly ring 3 is arranged close to the blade root 2, and a metal mesh 5 is also laid on the outer surface of the blade body 1, and the two ends of the metal mesh 5 are respectively connected to the first assembly ring 3 and the second assembly ring 4. A fixing seat 7 is fixedly installed on the outer wall of the second assembly ring 4, and a lightning receptor 8 is installed on the fixing seat 7. The lightning receptor 8 is connected to the second assembly ring 4, and a connecting pipe 401 is also penetrated on the inner wall of the first assembly ring 3 and the second assembly ring 4. The connecting pipe 401 penetrates the outer wall of the blade body 1 at one end away from the second assembly ring 4, and the blade root 2 is fixedly connected to the assembly seat 15 at one end away from the blade body 1, and a stabilizing member 16 is fixedly installed inside the assembly seat 15. The grounding wire is passed through the stabilizing member 16 into the blade root 2, and then into the blade body 1, and finally connected to the first assembly ring 3 and the second assembly ring 4 through the connecting wire through the connecting pipe 401, so that the grounding wire and the metal mesh 5 can be connected. When the blade body 1 is struck by lightning, the metal mesh 5 can be used for lightning protection, and the current can be introduced into the grounding wire through the metal mesh 5, thereby reducing the risk of the blade body 1 being affected by the lightning current. At the same time, the second assembly ring 4 is closer to the blade tip, and the risk of the blade tip being struck by lightning is greater. The fixing seat 7 added to the second assembly ring 4 is equipped with a lightning rod 8, which can achieve the function of attracting lightning, thereby reducing the risk of the blade tip being struck by lightning.

[0027] The first assembly ring 3 and the second assembly ring 4 are both provided with connection grooves 6 , and the ends of the metal mesh 5 are melt-welded in the connection grooves 6 . The fixing seat 7 is provided with fixing holes 11 .

[0028] The fixing seat 7 is integrally provided with an assembly sleeve 12, and the bottom of the lightning receptor 8 is fixedly installed in the assembly sleeve 12. A connecting rod 10 is also provided between the fixing seats 7 on the outer wall of the second assembly ring 4. A fixing block 9 is fixedly installed in the middle of the outer wall of the second assembly ring 4. The connecting rod 10 is provided through the fixing block 9. An arc groove 13 is also provided on the fixing seat 7. The end of the connecting rod 10 is provided in the arc groove 13. A locking nail 14 is also installed on the fixing seat 7. The locking nail 14 is used to lock the end of the connecting rod 10, so that a fixed connection can be achieved between the two fixing seats 7, so that the lightning receptors 8 installed on the two fixing seats 7 can be connected, playing a role in attracting lightning to each other.

[0029] The stabilizing member 16 includes an annular plate 17 fixedly mounted inside the assembly seat 15, a first annular seat 18 fixedly mounted inside the annular plate 17, a second annular seat 19 coaxially arranged with the first annular seat 18 is further provided inside the assembly seat 15, a plurality of clamping blocks 20 are installed between the first annular seat 18 and the second annular seat 19, an extension block 21 is integrally provided on the side of the clamping block 20 away from the center of the first annular seat 18 and the second annular seat 19, and an assembly rod 22 is provided through the extension block 21, and the two ends of the assembly rod 22 are connected to the first annular seat 18 and the second annular seat 19. The first annular seat 18 is used to position the clamping block 20, and the clamping block 20 is adjusted by rotating the second annular seat 19, so that the clamping block 20 can stably clamp the grounding wire to ensure the stability of the fan blade during rotation.

[0030] A plurality of sliding holes 24 are formed at the center of the upper edge of the first annular seat 18, and a plurality of strip-shaped holes 25 are formed at the center of the upper edge of the second annular seat 19. The strip-shaped holes 25 are scattered on the second annular seat 19. The two ends of the assembly rod 22 are respectively penetrated by the sliding holes 24 and the strip-shaped holes 25. A retaining ring 23 is fixedly mounted at each end of the assembly rod 22. The retaining ring 23 is tightly against the end faces of the first annular seat 18 and the second annular seat 19 that are away from each other. When the second annular seat 19 is rotated, the second annular seat 19 can drive the end of the assembly rod 22 inside it to move through the strip-shaped holes 25, thereby causing the other end of the assembly rod 22 to slide in the sliding holes 24. When the assembly rod 22 moves, the extension block 21 can drive the clamping block 20 to move synchronously. When all the clamping blocks 20 move synchronously, they can stably clamp the grounding wire according to its thickness, thereby achieving a fixing operation.

[0031] A protrusion 26 is integrally formed on the outer wall of the second annular seat 19. A threaded sleeve 27 is fixedly mounted inside the protrusion 26. A bolt 28 is threadedly mounted inside the threaded sleeve 27. A wear-resistant ring 29 is fixedly mounted on one end surface of the first annular seat 18 facing the second annular seat 19. When the bolt 28 is turned, the end of the bolt 28 moves toward the first annular seat 18. When the end of the bolt 28 abuts the wear-resistant ring 29, the second annular seat 19 and the first annular seat 18 are relatively fixed, thereby achieving the positioning of the clamping block 20.

[0032] Through the above-mentioned scheme of the present invention, the present invention lays the metal mesh 5 on the surface of the blade, which can reduce the risk of the blade itself being struck by lightning. At the same time, a lightning rod 8 is also installed near the tip of the blade, which can reduce the risk of the blade tip being struck by lightning. The grounding wire used to lead the lightning current from the metal mesh 5 and the lightning rod 8 can be stabilized by the stabilizer 16 to avoid the shaking of the grounding wire during the rotation of the blade. At the same time, the clamping block 20 arranged inside the stabilizer 16 can be adjusted to stably clamp grounding wires of different thicknesses.

[0033] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lightning protection metal mesh blade, comprising a blade body (1), characterized in that: The blade body (1) is integrally connected to a blade root (2) at one end away from the blade tip. A first assembly ring (3) and a second assembly ring (4) are fixedly installed on the outside of the blade body (1). The first assembly ring (3) is arranged close to the blade root (2). A metal mesh (5) is also laid on the outer surface of the blade body (1). The two ends of the metal mesh (5) are respectively connected to the first assembly ring (3) and the second assembly ring (4). A fixing seat (7) is fixedly installed on the outer wall of the second assembly ring (4). A lightning receptor (8) is installed on the fixed seat (7), and the lightning receptor (8) is connected to the second assembly ring (4). A connecting pipe (401) is also provided through the inner walls of the first assembly ring (3) and the second assembly ring (4). The end of the connecting pipe (401) away from the second assembly ring (4) passes through the outer wall of the blade body (1). The end of the blade root (2) away from the blade body (1) is fixedly connected to the assembly seat (15), and a stabilizing member (16) is fixedly installed inside the assembly seat (15).

2. The lightning protection metal mesh blade according to claim 1, characterized in that: The first assembly ring (3) and the second assembly ring (4) are both provided with connection grooves (6), the ends of the metal mesh (5) are melt-welded in the connection grooves (6), and the fixing seat (7) is provided with fixing holes (11).

3. The lightning protection metal mesh blade according to claim 2, characterized in that: The fixing seat (7) is integrally provided with an assembly sleeve (12), the bottom of the lightning receptor (8) is fixedly installed in the assembly sleeve (12), a connecting rod (10) is also provided between the fixing seats (7) located on the same outer wall of the second assembly ring (4), a fixing block (9) is fixedly installed in the middle of the outer wall of the second assembly ring (4), the connecting rod (10) passes through the fixing block (9), an arc groove (13) is also provided on the fixing seat (7), the end of the connecting rod (10) is arranged in the arc groove (13), and a locking nail (14) is also installed on the fixing seat (7).

4. The lightning protection metal mesh blade according to claim 3, characterized in that: The stabilizing member (16) comprises an annular plate (17) fixedly mounted inside the assembly seat (15); a first annular seat (18) is fixedly mounted inside the annular plate (17); a second annular seat (19) coaxially arranged with the first annular seat (18) is further provided inside the assembly seat (15); a plurality of clamping blocks (20) are installed between the first annular seat (18) and the second annular seat (19); an extension block (21) is integrally provided on one side of the clamping block (20) away from the center of the first annular seat (18) and the second annular seat (19); an assembly rod (22) is passed through the extension block (21); and both ends of the assembly rod (22) are connected to the first annular seat (18) and the second annular seat (19).

5. The lightning protection metal mesh blade according to claim 4, characterized in that: A plurality of sliding holes (24) are provided at the center of the upper edge of the first annular seat (18), and a plurality of strip holes (25) are provided at the center of the upper edge of the second annular seat (19). The strip holes (25) are arranged in a scattered manner on the second annular seat (19). The two ends of the assembly rod (22) respectively pass through the sliding holes (24) and the strip holes (25). The two end portions of the assembly rod (22) are also fixedly installed with retaining rings (23). The retaining rings (23) are arranged tightly against one end surface of the first annular seat (18) and the second annular seat (19) that are away from each other.

6. The lightning protection metal mesh blade according to claim 5, characterized in that: A convex block (26) is integrally provided on the outer wall of the second annular seat (19), a screw sleeve (27) is fixedly installed inside the convex block (26), a bolt (28) is threadedly installed inside the screw sleeve (27), and a wear-resistant ring (29) is fixedly installed on one end surface of the first annular seat (18) facing the second annular seat (19).

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