Protection device for preventing blade tip of wind power blade from sweeping tower

Abstract

The utility model discloses a protection device for preventing blade tips of wind power blades from sweeping a tower, which relates to the technical field of wind power and is technically characterized by comprising a tower frame, a maintenance mechanism is arranged on the surface of the tower frame, and a protection mechanism is arranged above the tower frame; the protection mechanism is located above the maintenance mechanism. The protection mechanism comprises a supporting part and a reinforcing part, and has the technical effects that the blades can be supported through the protection mechanism, and the situation that the blades are blown to be bent when wind power is large, blade tips of the blades collide with a tower, the blades are damaged, and the effect becomes poor during follow-up wind power generation is avoided; when the protection plate is supported, bending force of the blade can be counteracted by arranging a spring and a damper, the protection plate can be reinforced by arranging a toothed plate, an elastic piece, a telescopic block and an extrusion block, the blade can still be supported when the bending degree of the blade is high, the supporting performance of the protection plate can be improved, and the service life of the protection plate is prolonged. And the effect is better when the blades are protected.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power, in particular to a protection device for preventing the tip of a wind power blade from sweeping the tower. Background Technique

[0002] A wind power generation set is a system that converts the kinetic energy of wind into electrical energy. The wind power generation set includes a wind turbine and a generator; the wind turbine contains components such as blades, a hub, and reinforcement members; it has functions such as the blades rotating under the action of wind to generate electricity and the generator head rotating. The wind power generation power supply consists of a wind power generation set, a tower for supporting the generator set, a battery charging controller, an inverter, a load unloader, a grid connection controller, a battery pack, etc.;

[0003] With the large-scale development of wind turbines, the wind power blades are getting longer and longer, the flexibility of the blades increases, and the blade deformation also increases accordingly, and there is even a risk of sweeping the tower.

[0004] The current solution adopted by the existing device is to install a lidar on the nacelle, and control the blade pitch by measuring the distance between the blade and the tower, so as to finally prevent the blade from sweeping the tower. However, the lidar itself has high limitations and cannot be well recognized in rainy and foggy weather, so the blade pitch cannot be controlled, and the protection performance is not good during use. Therefore, a protection device for preventing the tip of a wind power blade from sweeping the tower is proposed. Content of the Utility Model

[0005] Technical Solution

[0006] To achieve the above object, the utility model provides the following technical solution: A protection device for preventing the tip of a wind power blade from sweeping the tower, including a tower, a maintenance mechanism is arranged on the surface of the tower, and a protection mechanism is arranged above the tower;

[0007] The protection mechanism is located above the maintenance mechanism;

[0008] The protection mechanism includes a support part and a reinforcement part;

[0009] The support part includes a fixed frame and a protection plate, and the reinforcement part includes a toothed plate and a fixed sleeve;

[0010] The top surface of the tower is rotatably provided with a nacelle through a rotating seat, a blade is installed on the surface of the output end of the nacelle, a connecting sleeve is installed on the surface of the nacelle, the front surface of the connecting sleeve is fixedly connected to the back surface of the fixed frame, a sliding plate is slidably arranged on the inner side surface of the fixed frame, a first connecting block is fixedly arranged on the front surface of the sliding plate, the front surface of the first connecting block slidably penetrates through the front end surface of the inner side of the fixed frame and extends to the front of the fixed frame, and the front surface of the first connecting block is fixedly connected to the back surface of the protection plate, and the front surface of the protection plate is in contact with the back surface of the blade.

[0011] Preferably, it includes a tower, characterized in that: a maintenance mechanism is arranged on the surface of the tower, and a protection mechanism is arranged above the tower;

[0012] The protection mechanism is located above the maintenance mechanism;

[0013] The protection mechanism includes a support part and a reinforcement part;

[0014] The support part includes a fixed frame and a protection plate, and the reinforcement part includes a toothed plate and a fixed sleeve;

[0015] The top surface of the tower is rotatably provided with a nacelle through a rotating seat. A blade is installed on the surface of the output end of the nacelle. A connecting sleeve is installed on the surface of the nacelle. The front surface of the connecting sleeve is fixedly connected to the back surface of the fixed frame. A sliding plate is slidably arranged on the inner side surface of the fixed frame. A connecting block one is fixedly arranged on the front surface of the sliding plate. The front surface of the connecting block one slidably penetrates through the front end surface of the inner side of the fixed frame and extends to the front of the fixed frame. The front surface of the connecting block one is fixedly connected to the back surface of the protection plate. The front surface of the protection plate is in contact with the back surface of the blade.

[0016] Preferably, four springs and four dampers are fixedly arranged on the front end surface of the inner side of the fixed frame. The back surfaces of the four springs and the back surfaces of the four dampers are fixedly connected to the front surface of the sliding plate.

[0017] Preferably, the back surface of the sliding plate is fixedly connected to the front surface of the fixed sleeve. A telescopic block is slidably arranged on the inner side surface of the fixed sleeve. An extrusion block is fixedly arranged on the left and right side surfaces of the telescopic block. The front end surface of the inner side of the fixed frame is fixedly connected to the front surface of the toothed plate. The surface of the extrusion block is engaged with the tooth surface of the toothed plate.

[0018] Preferably, a square plate is fixedly arranged on the back surface of the telescopic block. An elastic member is fixedly arranged on the right side surface of the square plate. The right side surface of the elastic member is fixedly connected to the left side surface of the fixed sleeve.

[0019] Preferably, a wedge-shaped groove is formed on the inner side surface of the fixed frame. A wedge-shaped block is slidably arranged on the inner wall of the wedge-shaped groove. The left side surface of the wedge-shaped block is fixedly connected to the left side surface of the sliding plate. The protection mechanism and the blades are both provided with three groups.

[0020] Preferably, two fixed frames are fixedly arranged on the top surface of the supporting plate. Two connecting blocks two are respectively slidably arranged on the inner side surfaces of the two fixed frames. The front surfaces of the two connecting blocks two are respectively fixedly connected to the back surfaces of the two extension plates. Two fixing grooves are respectively formed on the top surfaces of the two connecting blocks two. Two locking bolts respectively thread through the top surfaces of the two fixed frames and extend to the inner walls of the two fixing grooves. The bottom surfaces of the two locking bolts are respectively in pressing contact with the inner walls of the two fixing grooves.

[0021] Preferably, a ladder is fixedly arranged on the surface of the tower, a through groove is formed through the top surface of the supporting plate, the position of the through groove corresponds to the position of the ladder, and two reinforcing plates are fixedly arranged on the surface of the tower, and the top surfaces of the two reinforcing plates are fixedly connected to the bottom surface of the supporting plate.

[0022] Advantages

[0023] Compared with the prior art, the present utility model provides a protection device for preventing the tip of a wind turbine blade from sweeping the tower, having the following advantages:

[0024] 1. By providing a protection mechanism, the blade can be supported to avoid the blade being bent by strong wind, resulting in the tip of the blade colliding with the tower, which may cause damage to the blade and deteriorate the power generation effect in subsequent wind power generation. When supporting the blade, the force of the blade bending can be offset by providing a spring and a damper. By providing a toothed plate, an elastic member, a telescopic block and a pressing block, the blade can be reinforced, and it can still be supported when the blade has a high bending degree, which can improve the self-supporting property of the protection plate and make the protection effect better when protecting the blade.

[0025] 2. By providing a maintenance mechanism, after a failure occurs in the blade and the nacelle, maintenance personnel can climb above the supporting plate. By providing a guardrail, the maintenance personnel can be protected. And by providing two extension plates, the area of the supporting plate can be increased, making the maintenance of the blade and the nacelle more efficient. By rotating and locking the bolt, the second connecting block can be fixed. After the second connecting block is fixed, the extension plate can be fixed, making the extension plate more stable during maintenance and improving the safety. Description of the Drawings

[0026] Figure 1 is a right-side three-dimensional schematic diagram of the present utility model;

[0027] Figure 2 is a rear three-dimensional schematic diagram of the present utility model;

[0028] Figure 3 is a top three-dimensional schematic diagram of the present utility model;

[0029] Figure 4 is a left-side partial three-dimensional schematic diagram of the present utility model;

[0030] Figure 5 of the present utility model Figure 2 is an enlarged three-dimensional schematic diagram of area A in the present utility model.

[0031] In the figure: 1 tower, 2 protection mechanism, 21 blade, 22 nacelle, 23 connecting sleeve, 24 protection plate, 25 sliding plate, 26 first connecting block, 27 fixing frame, 28 spring, 29 damper, 210 fixing sleeve, 211 telescopic block, 212 extrusion block, 213 toothed plate, 214 elastic member, 215 square plate, 3 maintenance mechanism, 31 supporting plate, 32 guardrail, 33 ladder, 34 reinforcing plate, 35 second connecting block, 36 fixing frame, 37 extension plate, 38 slide rail, 39 locking bolt. Detailed implementation manner

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1

[0034] As Figures 1-5 shown, this embodiment proposes, including a tower 1, a maintenance mechanism 3 is arranged on the surface of the tower 1, and a protection mechanism 2 is arranged above the tower 1;

[0035] The protection mechanism 2 is located above the maintenance mechanism 3;

[0036] The protection mechanism 2 includes a support part and a reinforcement part;

[0037] The support part includes a fixing frame 27 and a protection plate 24, and the reinforcement part includes a toothed plate 213 and a fixing sleeve 210;

[0038] The top surface of the tower 1 is rotatably provided with a nacelle 22 through a rotating seat. The surface of the output end of the nacelle 22 is equipped with blades 21. A connecting sleeve 23 is installed on the surface of the nacelle 22. The front surface of the connecting sleeve 23 is fixedly connected to the back surface of the fixed frame 27. A sliding plate 25 is slidably arranged on the inner side surface of the fixed frame 27. A first connecting block 26 is fixedly arranged on the front surface of the sliding plate 25. The front surface of the first connecting block 26 slidably penetrates through the front end surface of the inner side of the fixed frame 27 and extends to the front of the fixed frame 27. The front surface of the first connecting block 26 is fixedly connected to the back surface of the protection plate 24. The front surface of the protection plate 24 is in contact with the back surface of the blade 21. Four springs 28 and four dampers 29 are fixedly arranged on the front end surface of the inner side of the fixed frame 27. The back surfaces of the four springs 28 and the back surfaces of the four dampers 29 are both fixedly connected to the front surface of the sliding plate 25. The back surface of the sliding plate 25 is fixedly connected to the front surface of the fixed sleeve 210. A telescopic block 211 is slidably arranged on the inner side surface of the fixed sleeve 210. An extrusion block 212 is fixedly arranged on the left and right side surfaces of the telescopic block 211. The front end surface of the inner side of the fixed frame 27 is fixedly connected to the front surface of the toothed plate 213. The surface of the extrusion block 212 meshes with the tooth surface of the toothed plate 213. A square plate 215 is fixedly arranged on the back surface of the telescopic block 211. An elastic member 214 is fixedly arranged on the right side surface of the square plate 215. The right side surface of the elastic member 214 is fixedly connected to the left side surface of the fixed sleeve 210. A wedge-shaped groove is formed on the inner side surface of the fixed frame 27. A wedge-shaped block is slidably arranged on the inner wall of the wedge-shaped groove. The left side surface of the wedge-shaped block is fixedly connected to the left side surface of the sliding plate 25. The protection mechanism 2 and the blades 21 are both provided in three groups.

[0039] In this embodiment, the protection mechanism 2 is provided to support the blades 21, preventing the blades from being bent by strong winds, which may cause the tips of the blades 21 to collide with the tower 1, resulting in damage to the blades 21 and a deterioration in the wind power generation effect in the future. When supporting the blades, the force of the blades being bent can be offset by the springs and dampers 29. By setting the toothed plate 213, elastic member 214, telescopic block 211, and extrusion block 212, the blades can be strengthened. Even when the bending degree of the blades is relatively high, they can still be supported, improving the self-supporting property of the protection plate 24 and making the protection effect on the blades 21 better.

[0040] Embodiment 2

[0041] Such as Figures 1-5As shown in the figure, based on the same concept as in the above-mentioned Embodiment 1, this embodiment also proposes that the maintenance mechanism 3 includes two extension plates 37. A support plate 31 is fixedly sleeved on the surface of the tower 1. Two slide rails 38 are fixedly arranged on the top surface of the support plate 31. Two connection grooves are respectively formed on the bottom surfaces of the two extension plates 37. The surfaces of the two slide rails 38 are respectively slidably connected with the inner walls of the two connection grooves. A guardrail 32 is fixedly arranged on the top surface of the support plate 31. Two fixing frames 36 are fixedly arranged on the top surface of the support plate 31. Two second connection blocks 35 are respectively slidably arranged on the inner sides of the two fixing frames 36. The fronts of the two second connection blocks 35 are respectively fixedly connected with the backs of the two extension plates 37. Two fixing grooves are respectively formed on the top surfaces of the two second connection blocks 35. Two locking bolts 39 respectively thread through the top surfaces of the two fixing frames 36 and extend to the inner walls of the two fixing grooves. The bottom surfaces of the two locking bolts 39 are respectively in pressing contact with the inner walls of the two fixing grooves. A ladder 33 is fixedly arranged on the surface of the tower 1. A through groove is formed through the top surface of the support plate 31, and the position of the through groove corresponds to the position of the ladder 33. Two reinforcing plates 34 are fixedly arranged on the surface of the tower 1. The top surfaces of the two reinforcing plates 34 are both fixedly connected with the bottom surface of the support plate 31.

[0042] In this embodiment, by providing the maintenance mechanism 3, maintenance personnel can climb above the support plate 31 after a failure occurs in the blade 21 and the nacelle 22. By providing the guardrail 32, the maintenance personnel can be protected. And by providing two extension plates 37, the area of the support plate 31 can be increased, making the maintenance of the blade 21 and the nacelle 22 more efficient. By rotating the locking bolt 39, the second connection block 35 can be fixed. After the second connection block 35 is fixed, the extension plate 37 can be fixed, making the extension plate 37 more stable during maintenance and improving safety.

[0043] During use, when the blade 21 rotates, its back surface may come into contact with the protection plate 24. After the blade 21 bends backward, the protection plate 24 can support it. After the blade bends, the protection plate 24 can move backward. When the protection plate 24 moves backward, the sliding plate 25 will move synchronously with it. When the sliding plate 25 moves backward, the spring 28 and the damper 29 can pull it, so as to offset the force of the blade 21 bending backward. When the sliding plate 25 moves backward, it can drive the telescopic block 211 and the extrusion block 212 to move synchronously. When the extrusion block 212 moves backward to a position where it can move toward the toothed plate 213 through the elastic member 214, when the sliding plate 25 stops moving, the elastic member 214 can make the extrusion block 212 engage with the toothed plate 213, thereby strengthening the sliding plate 25. After strengthening, the supporting force of the protection plate 24 can be improved. Improving the supporting force of the protection plate 24 can prevent the phenomenon of the blade tip sweeping the tower. By providing a ladder 33, after a failure occurs in the engine room, the staff can climb above the supporting plate 31. By controlling the movement of the two extension plates 37, the area of the supporting plate 31 can be increased, making it more convenient for maintenance. By rotating the locking bolt 39, the second connecting block 35 can be fixed. After the second connecting block 35 is fixed, the extension plate 37 can be fixed, making the extension plate 37 more stable during maintenance and improving the safety.

[0044] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made on the basis of the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are all covered by the protection scope of the present invention.

Claims

1. A protection device for preventing the tip of a wind turbine blade from sweeping the tower, comprising a tower (1), characterized in that: A maintenance mechanism (3) is provided on the surface of the tower (1), and a protection mechanism (2) is provided above the tower (1); The protection mechanism (2) is located above the maintenance mechanism (3); The protection mechanism (2) includes a support part and a reinforcement part; The support part includes a fixed frame (27) and a protection plate (24), and the reinforcement part includes a toothed plate (213) and a fixed sleeve (210); The top surface of the tower (1) is rotatably provided with a nacelle (22) through a rotating seat. A blade (21) is installed on the surface of the output end of the nacelle (22). A connecting sleeve (23) is installed on the surface of the nacelle (22). The front surface of the connecting sleeve (23) is fixedly connected to the rear surface of the fixed frame (27). A sliding plate (25) is slidably arranged on the inner side surface of the fixed frame (27). A first connecting block (26) is fixedly arranged on the front surface of the sliding plate (25). The front surface of the first connecting block (26) slidably penetrates through the front end surface of the inner side of the fixed frame (27) and extends to the front of the fixed frame (27). The front surface of the first connecting block (26) is fixedly connected to the rear surface of the protection plate (24). The front surface of the protection plate (24) is in contact with the rear surface of the blade (21).

2. The protection device for preventing the tip of a wind turbine blade from hitting the tower according to claim 1, wherein: The maintenance mechanism (3) includes two extension plates (37). A support plate (31) is fixedly sleeved on the surface of the tower (1). Two slide rails (38) are fixedly arranged on the top surface of the support plate (31). Two connecting grooves are respectively formed on the bottom surfaces of the two extension plates (37). The surfaces of the two slide rails (38) are respectively slidably connected to the inner walls of the two connecting grooves. A guardrail (32) is fixedly arranged on the top surface of the support plate (31).

3. The protection device for preventing the tip of a wind turbine blade from hitting the tower according to claim 1, characterized in that: Four springs (28) and four dampers (29) are fixedly arranged on the front end surface of the inner side of the fixed frame (27). The rear surfaces of the four springs (28) and the rear surfaces of the four dampers (29) are both fixedly connected to the front surface of the sliding plate (25).

4. A protection device for preventing the tip of a wind turbine blade from hitting the tower, characterized in that: The rear surface of the sliding plate (25) is fixedly connected to the front surface of the fixed sleeve (210). A telescopic block (211) is slidably arranged on the inner side surface of the fixed sleeve (210). An extrusion block (212) is fixedly arranged on the left side surface and the right side surface of the telescopic block (211). The front end surface of the inner side of the fixed frame (27) is fixedly connected to the front surface of the toothed plate (213). The surface of the extrusion block (212) is engaged with the tooth surface of the toothed plate (213).

5. The protection device for preventing the tip of a wind turbine blade from hitting the tower according to claim 4, characterized in that: A square plate (215) is fixedly arranged on the rear surface of the telescopic block (211). An elastic member (214) is fixedly arranged on the right side surface of the square plate (215). The right side surface of the elastic member (214) is fixedly connected to the left side surface of the fixed sleeve (210).

6. A protection device for preventing the tip of a wind turbine blade from hitting the tower according to claim 1, characterized in that: A wedge-shaped groove is formed on the inner side surface of the fixed frame (27). A wedge-shaped block is slidably arranged on the inner wall of the wedge-shaped groove. The left side surface of the wedge-shaped block is fixedly connected to the left side surface of the sliding plate (25). The protection mechanism (2) and the blade (21) are both provided with three groups.

7. A protection device for preventing the tip of a wind turbine blade from hitting the tower according to claim 2, characterized in that: Two fixing frames (36) are fixedly arranged on the top surface of the supporting plate (31). Two connecting blocks II (35) are respectively arranged on the inner sides of the two fixing frames (36) in a sliding manner. The front surfaces of the two connecting blocks II (35) are respectively fixedly connected with the back surfaces of two extension plates (37). Two fixing grooves are respectively formed in the top surfaces of the two connecting blocks II (35). Two locking bolts (39) respectively penetrate through the top surfaces of the two fixing frames (36) and extend to the inner walls of the two fixing grooves. The bottom surfaces of the two locking bolts (39) are respectively in pressing contact with the inner walls of the two fixing grooves.

8. A protection device for preventing the tip of a wind turbine blade from hitting the tower according to claim 2, characterized in that: A ladder (33) is fixedly arranged on the surface of the tower (1). A through groove is formed in the top surface of the supporting plate (31) in a penetrating manner, and the position of the through groove corresponds to the position of the ladder (33). Two reinforcing plates (34) are fixedly arranged on the surface of the tower (1). The top surfaces of the two reinforcing plates (34) are both fixedly connected with the bottom surface of the supporting plate (31).

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