Wind power plant lightning protection fan blade easy to disassemble
By introducing servo motors and gear systems into the lightning-proof fan blades of wind farms, the opening and closing design of the clamps solves the problem of difficulty in dismantling fan blades in the prior art, and achieves rapid disassembly and efficient maintenance.
Patent Information
- Application Number
- CN202411670480.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-03-25
AI Technical Summary
When disassembling the lightning-proof fan blades in existing wind farms, due to the complex connection of the grounding wire, it is difficult to disassemble and affect maintenance efficiency.
A wind farm lightning-proof fan blade is designed, and the gear system is driven by the servo motor and the clamping parts are opened and closed, so as to achieve rapid separation between the first grounding wire and the second grounding wire, reducing the difficulty of disassembly.
The rapid disassembly of fan blades is realized, reducing the dependence on ground wire connection, reducing the difficulty of disassembly, and improving maintenance efficiency.
Smart Images
Figure CN119686904A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of wind power equipment, in particular to an easily disassembled lightning-proof wind turbine blade for a wind farm. Background Art
[0002] Wind farm lightning protection for wind turbine blades is a technology used in wind power generation equipment to protect wind turbine blades from damage caused by lightning strikes. Since wind power generation equipment is usually located outdoors and exposed to various weather conditions, lightning is a common threat. Lightning strikes on wind turbine blades can cause equipment damage, shutdown and maintenance, and affect the stable operation of the wind power generation system. In order to solve this problem, wind farm lightning protection for wind turbine blades adopts a series of lightning protection measures, including covering the surface of wind turbine blades with conductive coatings or conductive materials so that the energy of lightning strikes can be quickly dispersed to the ground. In addition, lightning rods or lightning nets can be installed to attract lightning and guide it underground. These lightning protection measures can significantly reduce the risk of wind turbine blades being struck by lightning and protect the safe operation of wind power generation equipment. The development of wind farm lightning protection technology for wind turbine blades is of great significance to improving the reliability and stability of wind power generation equipment.
[0003] In the prior art, the lightning protection blades of wind turbines in wind farms need to be maintained regularly to prevent the equipment from failing. However, since the grounding wire inside the lightning protection blade is grounded at one end and connected to the top of the blade at the other end, a lot of effort is required to handle the grounding wire when removing the blade, which makes the blade difficult to remove. Therefore, an easily removable lightning protection blade for wind farm wind turbine is proposed. Summary of the invention
[0004] In view of the problems existing in the prior art, the present invention is proposed.
[0005] To solve the above technical problems, the present invention provides the following technical solutions: an easily detachable wind farm lightning protection wind turbine blade, comprising: a wind turbine blade, the wind turbine blade is fixedly connected with a connecting buckle on the outside, the connecting buckle is threadedly connected with a threaded nail on the outside, the connecting buckle is clamped with a connecting slot on the outside, the connecting slot is fixedly connected with a wind turbine hub on the outside, the wind turbine hub is fixedly connected with a first grounding wire on the inside, the wind turbine hub is fixedly connected with a fixing mechanism on the inside, the fixing mechanism comprises a fixing slot, the fixing slot is fixedly connected with a spring on the outside, and the spring is fixedly connected with a rubber fixing ring on the outside; the fixing slot is fixedly connected with a fixing slide on the outside, the fixing slide is fixedly connected with a control housing on the outside, the control housing is fixedly connected with a servo motor on the inside, the servo motor is fixedly connected with a first gear on the outside, and the first gear is meshingly connected with a second gear on the outside.
[0006] As a preferred solution of the easily disassembled wind farm lightning protection wind turbine blade of the present invention, the external thread of the connecting slot is connected with a threaded nail.
[0007] As a preferred solution of the easily disassembled wind farm lightning protection wind turbine blades of the present invention, the third gear is externally meshedly connected with a first rack, and the first rack is externally fixedly connected with a fixing rod.
[0008] As a preferred solution of the easily detachable wind farm lightning protection wind turbine blades of the present invention, the first rack is externally slidably connected to a fixed slide groove, and the fixed slide groove is internally slidably connected to a second rack.
[0009] As a preferred solution of the easily detachable wind farm lightning protection wind turbine blades of the present invention, a third gear is rotatably connected inside the fixed slide slot, and a second gear is rotatably connected inside the control housing.
[0010] As a preferred solution of the easily disassembled wind farm lightning protection wind turbine blades of the present invention, a lightning receptor is arranged outside the wind turbine blade, the lightning receptor comprises a lightning rod, and a protective shell is fixedly connected to the outside of the lightning rod.
[0011] As a preferred solution of the easily disassembled wind farm lightning protection wind turbine blades of the present invention, the protection shell is externally fixedly connected to a downconductor, and the downconductor is externally fixedly connected to a second grounding wire.
[0012] As a preferred solution of the easily detachable wind farm lightning protection wind turbine blades of the present invention, the second grounding wire is fixedly connected to a conductive sheet on the outside, the conductive sheet is fixedly connected to an insulating connecting ring on the outside, and the insulating connecting ring is fixedly connected to a fixing groove on the outside.
[0013] As a preferred solution of the easily disassembled wind farm lightning protection wind turbine blades of the present invention, wherein: the lightning rod is fixedly connected to a conductive block on the outside, and the conductive block is fixedly connected to a downconductor rod on the outside.
[0014] As a preferred solution for the easily disassembled wind farm lightning protection wind turbine blades described in the present invention, the second gear is fixedly connected to the outside of a connecting shaft, the connecting shaft is fixedly connected to the outside of a third gear, the third gear is meshingly connected to the outside of a second rack, the second rack is fixedly connected to the outside of a fixing rod, and the fixing rod is fixedly connected to the outside of a clamping member.
[0015] Beneficial effects of the present invention: 1. In the present invention, when disassembling the fan blades, it is only necessary to control the servo motor to drive the first gear to rotate so that the second gear rotates and drives the insulating connecting ring fixedly connected by the connecting shaft to rotate, thereby driving the meshingly connected first rack and second rack to move to both sides, so that the clamping parts fixedly connected by the fixing rod open to both sides. After the clamping parts are opened to both sides, the first grounding wire can be easily separated from the second grounding wire due to the lack of fixation, thereby reducing the influence of the connection of the grounding wire on the disassembly of the fan blades, reducing the difficulty of disassembling the fan blades, and facilitating disassembly.
[0016] In the present invention, when in use, after lightning strikes the lightning rod, the lightning current generated by the lightning strike enters the down conductor through the conductive block, and the down conductor is connected to the second grounding wire. The lightning current can enter the second grounding wire through the down conductor, and the second grounding wire is fixedly connected to the first grounding wire through the conductive sheet. The conductive sheet can conduct the current in the second grounding wire into the first grounding wire, and the other end of the first grounding wire is connected to the ground, so that the lightning current finally acts on the ground, reducing the damage to the fan blades due to lightning strikes in thunderstorms and extending the service life of the fan blades. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing 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 creative work. Among them:
[0018] Figure 1 A schematic diagram of the structure of an easily disassembled wind turbine blade for lightning protection in a wind farm proposed by the present invention;
[0019] Figure 2 It is a schematic diagram of the appearance structure of the present invention;
[0020] Figure 3 It is a schematic diagram of a first three-dimensional structure of the present invention;
[0021] Figure 4 It is a schematic diagram of a second three-dimensional structure of the present invention;
[0022] Figure 5 is a schematic diagram of a third three-dimensional structure of the present invention;
[0023] Figure 6 is a schematic diagram of a fourth three-dimensional structure of the present invention;
[0024] Figure 7 is a schematic diagram of a fifth three-dimensional structure of the present invention;
[0025] Figure 8is a sixth three-dimensional structural schematic diagram of the present invention;
[0026] Fig. 9 is a seventh three-dimensional structural schematic diagram of the present invention;
[0027] Fig.10 is a schematic diagram of an eighth three-dimensional structure of the present invention;
[0028] Fig.11 It is a ninth three-dimensional structural schematic diagram of the present invention.
[0029] In the figure: 1. fan blade; 2. lightning rod; 3. connecting buckle; 4. threaded nail; 5. connecting slot; 6. fan hub; 7. first grounding wire; 8. protective shell; 9. downconductor; 10. second grounding wire; 11. conductive block; 12. clamping member; 13. fixing slot; 14. conductive sheet; 15. insulating connecting ring; 16. spring; 17. rubber fixing ring; 18. control shell; 19. fixing slide slot; 20. fixing rod; 21. servo motor; 22. first gear; 23. second gear; 24. connecting shaft; 25. third gear; 26. first rack; 27. second rack. DETAILED DESCRIPTION
[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.
[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.
[0033] Embodiment 1, as Figure 1-11 As shown, an easily disassembled wind farm lightning protection wind turbine blade proposed by the present invention comprises a wind turbine blade 1, a connecting buckle 3 is fixedly connected to the outside of the wind turbine blade 1, a screw 4 is threadedly connected to the outside of the connecting buckle 3, a connecting slot 5 is clamped to the outside of the connecting buckle 3, a wind turbine hub 6 is fixedly connected to the outside of the connecting slot 5, a first grounding wire 7 is fixedly connected to the inside of the wind turbine hub 6, and a fixing mechanism is fixedly connected to the inside of the wind turbine blade 1, and the fixing mechanism comprises a fixing slot 13;
[0034] The fixing groove 13 is fixedly connected with a spring 16 on the outside, the spring 16 is fixedly connected with a rubber fixing ring 17 on the outside, the fixing groove 13 is fixedly connected with a fixing slide 19 on the outside, the fixing slide 19 is fixedly connected with a control housing 18 on the outside, the control housing 18 is fixedly connected with a servo motor 21 on the inside, and the servo motor 21 is fixedly connected with a first gear 22 on the outside;
[0035] The first gear 22 is meshedly connected to the outside of the second gear 23, the second gear 23 is fixedly connected to the outside of the connecting shaft 24, the connecting shaft 24 is fixedly connected to the outside of the third gear 25, the third gear 25 is meshedly connected to the outside of the second rack 27, the second rack 27 is fixedly connected to the outside of the fixing rod 20, and the fixing rod 20 is fixedly connected to the outside of the clamping member 12;
[0036] The connecting slot 5 is externally threadedly connected to a threaded nail 4, the third gear 25 is externally meshedly connected to a first rack 26, the first rack 26 is externally fixedly connected to a fixed rod 20, the first rack 26 is externally slidably connected to a fixed slide groove 19, the fixed slide groove 19 is internally slidably connected to a second rack 27, the fixed slide groove 19 is internally rotatably connected to the third gear 25, and the control housing 18 is internally rotatably connected to a second gear 23.
[0037] The working principle of the wind farm lightning protection wind turbine blade that is easy to disassemble proposed by the present invention is that when the wind turbine blade 1 needs to be inspected and repaired during use, the wind turbine blade 1 can be easily separated from the wind turbine hub 6 by pulling out the threaded nail 4 that is threadedly connected at the connection point between the connecting buckle 3 and the connecting slot 5, thereby reducing the difficulty of disassembling the wind turbine blade 1 while ensuring a stable connection between the wind turbine blade 1 and the wind turbine hub 6. However, most traditional lightning protection blades have a grounding wire connecting the top of the blade and the ground to guide the lightning current, but workers need to spend a lot of energy to handle the grounding wire during disassembly;
[0038] By separating the grounding wire into two connectable first grounding wires 7 and second grounding wires 10, and then clamping and fixing the first grounding wire 7 by a fixing mechanism, the grounding wire can be quickly separated when the fan blade 1 is disassembled. When the first grounding wire 7 passes through the fixing groove 13, the rubber anti-sliding block arranged on the side wall of the conductive sheet 14 can improve the friction of the first grounding wire 7 while insulating it. When the first grounding wire 7 passes through the rubber fixing ring 17, the rubber fixing ring 17 can expand and deform, thereby compressing the spring 16 to deform and generate elastic potential energy. The elastic potential energy generated by the spring 16 reacts to the rubber fixing ring 17, so that the rubber fixing ring 17 compresses the first grounding wire 7, thereby improving the stability of the first grounding wire 7 during operation. The first grounding wire 7 is connected to the second grounding wire 10 through the conductive sheet 14.
[0039] The first grounding wire 7 is clamped and fixed by a fixing mechanism to ensure that the grounding wire can work and drain normally. When the fan blade 1 needs to be disassembled and repaired, the servo motor 21 in the control housing 18 is controlled to drive the fixedly connected first gear 22 to rotate and then drive the meshingly connected second gear 23 to rotate, so that the third gear 25 fixedly connected by the connecting shaft 24 rotates. The rotation of the third gear 25 can drive the meshingly connected first rack 26 and second rack 27 to move to both sides, and then drive the clamping member 12 fixedly connected by the fixing rod 20 to separate to both sides. After the clamping member 12 is opened to both sides, the first grounding wire 7 can be easily separated from the second grounding wire 10 due to the lack of fixation, thereby reducing the influence of the connection of the grounding wire on the disassembly of the fan blade 1, reducing the difficulty of disassembling the fan blade 1, and facilitating disassembly.
[0040] Embodiment 2, as Figure 1-11 As shown, a lightning receptor is arranged outside the wind turbine blade 1, and the lightning receptor includes a lightning rod 2, and a protective shell 8 is fixedly connected to the outside of the lightning rod 2, and a downconductor 9 is fixedly connected to the outside of the protective shell 8;
[0041] The down-conductor rod 9 is externally fixedly connected with a second grounding wire 10, the lightning rod 2 is externally fixedly connected with a conductive block 11, and the conductive block 11 is externally fixedly connected with the down-conductor rod 9;
[0042] The second grounding wire 10 is externally fixedly connected with a conductive sheet 14 , the conductive sheet 14 is externally fixedly connected with an insulating connecting ring 15 , and the insulating connecting ring 15 is externally fixedly connected with a fixing groove 13 .
[0043] The working principle of the wind farm lightning protection wind turbine blade that is easily disassembled proposed by the present invention is that the flash connection part arranged at the lightning-prone part of the wind turbine blade 1 can protect the wind turbine blade 1 when the wind turbine blade 1 is struck by lightning on a rainy day. When the lightning strikes the lightning rod 2, the lightning rod 2 can introduce the lightning current generated by the lightning strike to the conductive block 11, and then the lightning current enters the down conductor 9 through the conductive block 11, and the down conductor 9 is fixedly connected to the second grounding wire 10;
[0044] The lightning current can enter the second grounding wire 10 through the down conductor 9. The second grounding wire 10 is connected to the first grounding wire 7 through the conductive sheet 14. The conductive sheet 14 can conduct the current in the second grounding wire 10 into the first grounding wire 7. The other end of the first grounding wire 7 is connected to the ground. The lightning current can eventually be guided to the ground through the second grounding wire 10 and the first grounding wire 7, thereby reducing the damage to the wind turbine blades 1 caused by lightning strikes during thunderstorms and extending the service life of the wind turbine blades 1.
[0045] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values (e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.
[0046] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.
[0047] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.
[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.
Claims
1. An easily disassembled wind farm lightning protection wind turbine blade, characterized in that: include, A fan blade (1), wherein the fan blade (1) is fixedly connected to a connecting buckle (3) on the outside, the connecting buckle (3) is externally threadedly connected to a threaded nail (4), the connecting buckle (3) is externally clamped to a connecting slot (5), the connecting slot (5) is externally fixedly connected to a fan hub (6), the fan hub (6) is internally fixedly connected to a first grounding wire (7), the fan blade (1) is internally fixedly connected to a fixing mechanism, the fixing mechanism comprises a fixing slot (13), the fixing slot (13) is externally fixedly connected to a spring (16), and the spring (16) is externally fixedly connected to a rubber fixing ring (17); The fixed groove (13) is fixedly connected to a fixed slide groove (19) on the outside, the fixed slide groove (19) is fixedly connected to a control housing (18) on the outside, the control housing (18) is fixedly connected to a servo motor (21) on the inside, the servo motor (21) is fixedly connected to a first gear (22) on the outside, and the first gear (22) is meshingly connected to a second gear (23) on the outside.
2. The easily disassembled wind farm lightning protection wind turbine blade according to claim 1, characterized in that: The connection slot (5) is externally threadedly connected with a threaded nail (4).
3. The easily disassembled wind farm lightning protection wind turbine blade according to claim 2, characterized in that: The third gear (25) is externally meshed and connected with a first rack (26), and the first rack (26) is externally fixedly connected with a fixing rod (20).
4. The easily disassembled wind farm lightning protection wind turbine blade according to claim 3, characterized in that: The first rack (26) is externally slidably connected to a fixed slide groove (19), and the fixed slide groove (19) is internally slidably connected to a second rack (27).
5. The easily disassembled wind farm lightning protection wind turbine blade according to claim 4, characterized in that: A third gear (25) is rotatably connected inside the fixed sliding groove (19), and a second gear (23) is rotatably connected inside the control housing (18).
6. The easily disassembled wind farm lightning protection wind turbine blade according to claim 1, characterized in that: The wind turbine blade (1) is provided with a lightning receptor outside, the lightning receptor includes a lightning rod (2), and the lightning rod (2) is fixedly connected to a protective housing (8) outside.
7. The easily disassembled wind farm lightning protection wind turbine blade according to claim 6, characterized in that: The protection shell (8) is externally fixedly connected to a downconductor (9), and the downconductor (9) is externally fixedly connected to a second grounding wire (10).
8. The easily disassembled wind farm lightning protection wind turbine blade according to claim 7, characterized in that: The second grounding wire (10) is fixedly connected to a conductive sheet (14) on the outside, the conductive sheet (14) is fixedly connected to an insulating connection ring (15) on the outside, and the insulating connection ring (15) is fixedly connected to a fixing groove (13) on the outside.
9. The easily disassembled wind farm lightning protection wind turbine blade according to claim 6, characterized in that: The lightning rod (2) is externally fixedly connected to a conductive block (11), and the conductive block (11) is externally fixedly connected to a downconductor rod (9).
10. The easily disassembled wind farm lightning protection wind turbine blade according to claim 1, characterized in that: The second gear (23) is externally fixedly connected to a connecting shaft (24), and the connecting shaft (24) is externally fixedly connected to a third gear (25), and the third gear (25) is externally meshingly connected to a second rack (27), and the second rack (27) is externally fixedly connected to a fixing rod (20), and the fixing rod (20) is externally fixedly connected to a clamping member (12).