Wind turbine tail rudder based on gravity speed regulation

Abstract

The utility model relates to the technical field of wind power generation, in particular to a wind turbine tail rudder based on gravity speed regulation, which is characterized in that a plurality of mounting grooves are formed in a through hole at equal intervals along the axial lead direction, a roller is rotatably connected in each mounting groove, a connecting rod is positioned among the plurality of rollers, and each roller is in rolling contact with the connecting rod; two parallel limiting rods are fixedly connected to the opening position of the opening frame, a limiting plate is fixedly connected between the two limiting rods, and the upper end of the limiting plate makes contact with the tail vane rod. The gravity of the tail vane and the gravity of the tail vane rod are reached or exceeded through wind power, the tail vane rod is dragged to deflect upwards along the connecting rod, the tail vane rod drives the movable seat to move when moving upwards, the movable seat drives the rollers to move, the rollers are in rolling contact with the connecting rod, and the movable seat is in rolling contact with the connecting rod through the rollers. And friction borne by the movable seat in the upward moving process is reduced, wind power can conveniently blow the tail vane rod to deflect upwards, and therefore the speed is rapidly and effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and in particular to a wind turbine tail rudder based on gravity speed regulation. Background Technology

[0002] Gravity-regulated wind turbines are currently the most common type of small wind turbine with a lateral deflection speed limiting mechanism. These small wind turbines were originally imported from abroad, and their operation utilizes mechanical principles, resulting in excellent deflection performance.

[0003] In the application document CN201720074058.X, when the wind speed exceeds the rated wind speed, the eccentricity causes the wind turbine head to deflect to one side. Due to its aerodynamic performance, the tail rudder 7 will always remain in the same direction as the wind. When the wind force reaches or exceeds the weight of the tail rudder 7 and the tail rudder stick 6, it will just drag the tail rudder stick 6 to deflect upward along the inclined hinge axis 56. At the same time, the eccentric frame 2 causes the generator 4 to deflect to one side due to the eccentricity, so that the head of the generator 4 forms an angle with the wind direction, thereby reducing the speed.

[0004] When the wind blows the tail rudder stock upward along the slant hinge axis, there is a large friction between the tail rudder stock and the slant hinge axis. The friction between the tail rudder stock and the slant hinge axis hinders the upward deflection of the tail rudder stock. Therefore, a larger wind force is required to blow the slant hinge axis upward, which makes it impossible to decelerate quickly when the wind speed exceeds the rated wind speed. Utility Model Content

[0005] The purpose of this invention is to solve the problem of large friction between the tail rudder and the hinge shaft in the existing technology, which hinders the upward deflection of the tail rudder and makes it impossible to quickly reduce speed when the wind speed exceeds the rated wind speed. Therefore, this invention proposes a gravity-based speed regulation tail rudder for wind turbines.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a gravity-regulated wind turbine tail rudder, including a mounting frame. A generator is fixedly connected to the upper end of the mounting frame. An open frame is fixedly connected to one side of the generator. A connecting rod is rotatably connected inside the open frame. A movable seat is slidably connected to the connecting rod. A through hole is opened in the movable seat. The connecting rod passes through the through hole. Several mounting slots are evenly spaced along the axis of the through hole. A roller is rotatably connected in each mounting slot. The connecting rod is located between the rollers, and each roller is in rolling contact with the connecting rod. Two parallel limiting rods are fixedly connected to the open end of the open frame. A limiting plate is fixedly connected between the two limiting rods. The upper end of the limiting plate is in contact with the tail rudder rod.

[0008] Preferably, the open frame is coated with an anti-corrosion layer, which is a polyethylene anti-corrosion layer, and the open frame and the limiting rod are an integral structure.

[0009] Preferably, the connecting rod is inclined, and there is a gap between the connecting rod and the inner wall of the through hole.

[0010] Preferably, each of the limiting rods is fixedly connected to a fixing tube, and each fixing tube is fitted with an anti-collision sleeve.

[0011] Preferably, the anti-collision sleeve is an elastic rubber sleeve.

[0012] Preferably, the open frame is connected to a cleaning mechanism for cleaning the rollers. The cleaning mechanism includes an air inlet hood, which is fixedly connected to the upper end of the open frame. Both sides of the air inlet hood are connected to connecting pipes, and a housing is connected between the two connecting pipes. The upper end of the housing is connected to an exhaust pipe, and the outlet of the exhaust pipe is arranged in the direction of the through hole.

[0013] Preferably, the housing is located at the bottom inside of the open frame, and the connecting pipe is located on the outside of the open frame.

[0014] Preferably, the air inlet of the air inlet hood has an inclined surface, and a filter screen is connected to the inclined surface.

[0015] The beneficial effects of the gravity-based speed regulation tail rudder proposed in this utility model are as follows:

[0016] By using wind force to reach or exceed the weight of the tail rudder and tail rudder stick, the tail rudder stick is dragged upward along the connecting rod. As the tail rudder stick moves upward, it drives the movable seat to move, and the movable seat drives several rollers to move. The rollers make rolling contact with the connecting rod, and the movable seat makes rolling contact with the connecting rod through the rollers, which reduces the friction encountered by the movable seat during the upward movement, making it easier for the wind force to blow the tail rudder stick upward, thereby quickly and effectively reducing the speed. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a wind turbine tail rudder based on gravity speed regulation proposed in this utility model. Figure 1 ;

[0018] Figure 2 A schematic diagram of the structure of a wind turbine tail rudder based on gravity speed regulation proposed in this utility model. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the connection between the open frame and the cleaning mechanism in the tail rudder of a wind turbine based on gravity speed regulation, as proposed in this utility model.

[0020] Figure 4This is a cross-sectional structural diagram showing the connection between the open frame and the cleaning mechanism in the tail rudder of a wind turbine based on gravity speed regulation, as proposed in this utility model.

[0021] In the diagram: 1. Mounting bracket; 2. Generator; 3. Open frame; 4. Connecting rod; 5. Movable seat; 6. Tail rudder stick; 7. Tail rudder; 8. Through hole; 9. Mounting slot; 10. Roller; 11. Limiting rod; 12. Limiting plate; 13. Fixing pipe; 14. Anti-collision sleeve; 15. Cleaning mechanism; 151. Air inlet hood; 152. Connecting pipe; 153. Housing; 154. Exhaust pipe; 155. Sloping surface; 156. Filter screen. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1: Refer to Figure 1-4 A gravity-based speed-regulating wind turbine tail rudder includes a mounting frame 1. A generator 2 is fixedly connected to the upper end of the mounting frame 1. An open frame 3 is fixedly connected to one side of the generator 2. The open frame 3 is coated with an anti-corrosion layer, which is a polyethylene anti-corrosion layer. A connecting rod 4 is rotatably connected inside the open frame 3. The connecting rod 4 is inclined and a movable seat 5 is slidably connected to the connecting rod 4. A tail rudder rod 6 is fixedly connected to one side of the movable seat 5. A tail rudder 7 is connected to one end of the tail rudder rod 6. A through hole 8 is opened in the movable seat 5, through which the connecting rod 4 passes. A gap is provided between the connecting rod 4 and the inner wall of the through hole 8. Several mounting slots 9 are equally spaced along the axis of the through hole 8. Each mounting slot 9 is rotatably connected to a roller 10. The connecting rod 4 is located between the rollers 10, and each roller 10 is in rolling contact with the connecting rod 4. Two parallel limiting rods 11 are fixedly connected to the opening of the open frame 3. The open frame 3 and the limiting rods 11 are an integral structure. A limiting plate 12 is fixedly connected between the two limiting rods 11. The upper end of the limiting plate 12 is in contact with the tail rudder 6.

[0024] Work process:

[0025] When the wind speed exceeds the rated wind speed, the eccentricity causes the generator 2 head to deflect to one side. Due to its aerodynamic performance, the tail rudder 7 will always remain in the same direction as the wind. When the wind force reaches or exceeds the weight of the tail rudder 7 and the tail rudder stick 6, it drags the tail rudder stick 6 upward along the connecting rod 4. When the tail rudder stick 6 moves upward, it drives the movable seat 5 to move. The movable seat 5 drives several rollers 10 to move. The rollers 10 roll in contact with the connecting rod 4. The movable seat 5 rolls in contact with the connecting rod 4 through the rollers 10, reducing the friction encountered by the movable seat 5 during the upward movement. This makes it easier for the wind force to blow the tail rudder stick 6 upward, thereby quickly and effectively reducing the speed.

[0026] When the wind speed drops to the rated wind speed range, the tail rudder 7 returns to its original position due to its own weight and resumes normal power generation by counter-winding.

[0027] Example 2: When the tail rudder 6 deflects, the tail rudder 6 is prone to colliding with the limit rod 11, and the collision intensity between the tail rudder 6 and the limit rod 11 is relatively large. (Refer to...) Figure 3 As another preferred embodiment of this utility model, the difference from embodiment 1 is that each limiting rod 11 is fixedly connected to a fixing tube 13, and each fixing tube 13 is fitted with an anti-collision sleeve 14. The anti-collision sleeve 14 is an elastic rubber sleeve. The fixing tube 13 fixes the anti-collision sleeve 14. The anti-collision sleeve 14 is located between the limiting rod 11 and the tail rudder 6, thereby reducing the collision intensity with the limiting rod 11.

[0028] Example 3: When the roller 10 rolls on the connecting rod 4, dust on the connecting rod 4 easily adheres to the roller 10, thus affecting the rolling of the roller 10. (Refer to...) Figure 4 As another preferred embodiment of this utility model, the difference from embodiment 1 is that a cleaning mechanism 15 for cleaning the roller 10 is connected to the open frame 3. The cleaning mechanism 15 includes an air inlet hood 151, which is fixedly connected to the upper end of the open frame 3. Both sides of the air inlet hood 151 are connected to connecting pipes 152, which are located on the outside of the open frame 3. A box 153 is connected between the two connecting pipes 152, which is located at the bottom of the inside of the open frame 3. An exhaust pipe 154 is connected to the upper end of the box 153, and the outlet of the exhaust pipe 154 is set towards the through hole 8. An inclined surface 155 is opened on the air inlet of the air inlet hood 151, and a filter screen 156 is connected to the inclined surface 155.

[0029] External airflow passes through the filter 156 and enters the air inlet hood 151. The filter 156 filters the dust in the air, and the filtered air enters the air inlet hood 151. The air in the air inlet hood 151 is introduced into the housing 153 through the connecting pipe 152. The air in the housing 153 is released from the exhaust pipe 154. The air released from the exhaust pipe 154 enters the through hole 8 to clean the surface of the roller 10 and reduce the impact of dust on the rolling of the roller 10.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A gravity-based speed-regulating wind turbine tail rudder, comprising a mounting frame (1), wherein a generator (2) is fixedly connected to the upper end of the mounting frame (1), an open frame (3) is fixedly connected to one side of the generator (2), a connecting rod (4) is rotatably connected inside the open frame (3), and a movable seat (5) is slidably connected to the connecting rod (4), characterized in that, in: The movable seat (5) has a through hole (8) and the connecting rod (4) passes through the through hole (8). Several mounting slots (9) are equally spaced along the axis of the through hole (8). Each mounting slot (9) is rotatably connected to a roller (10). The connecting rod (4) is located between several rollers (10), and each roller (10) is in rolling contact with the connecting rod (4). Two parallel limiting rods (11) are fixedly connected at the opening of the open frame (3). A limiting plate (12) is fixedly connected between the two limiting rods (11). The upper end of the limiting plate (12) is in contact with the tail rudder rod (6).

2. The wind turbine tail rudder based on gravity speed regulation according to claim 1, characterized in that, The open frame (3) is coated with an anti-corrosion layer, which is a polyethylene anti-corrosion layer. The open frame (3) and the limiting rod (11) are an integral structure.

3. The wind turbine tail rudder based on gravity speed regulation according to claim 1, characterized in that, The connecting rod (4) is inclined, and there is a gap between the connecting rod (4) and the inner wall of the through hole (8).

4. The wind turbine tail rudder based on gravity speed regulation according to claim 1, characterized in that, Each of the limiting rods (11) is fixedly connected to a fixing tube (13), and each fixing tube (13) is fitted with an anti-collision sleeve (14).

5. The wind turbine tail rudder based on gravity speed regulation according to claim 4, characterized in that, The anti-collision sleeve (14) is an elastic rubber sleeve.

6. The wind turbine tail rudder based on gravity speed regulation according to claim 1, characterized in that, The open frame (3) is connected to a cleaning mechanism (15) for cleaning the roller (10). The cleaning mechanism (15) includes an air inlet hood (151), which is fixedly connected to the upper end of the open frame (3). Both sides of the air inlet hood (151) are connected to connecting pipes (152), and a box (153) is connected between the two connecting pipes (152). The upper end of the box (153) is connected to an exhaust pipe (154), and the outlet of the exhaust pipe (154) is set towards the through hole (8).

7. The wind turbine tail rudder based on gravity speed regulation according to claim 6, characterized in that, The box (153) is located at the bottom inside of the open frame (3), and the connecting pipe (152) is located on the outside of the open frame (3).

8. The wind turbine tail rudder based on gravity speed regulation according to claim 7, characterized in that, The air inlet of the air inlet hood (151) is provided with a slope (155), and a filter screen (156) is connected to the slope (155).

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