Wind turbine blade damping mechanism

Abstract

The utility model discloses a wind turbine blade damping mechanism, and particularly relates to the technical field of wind power generation supplies, which comprises a wind wheel, an engine assembly is arranged on one side of the wind wheel, a part mounting groove is arranged inside the engine assembly, a connecting column is fixedly connected inside the engine assembly, and a part matching ring is fixedly connected on one side of the wind wheel. The part matching ring is arranged in the engine assembly, and the outer wall of the wind wheel is fixedly connected with a damping ring. The spring clamping piece is arranged between the damping frame and the second magnet, after the second magnet and the first magnet attract each other, the second magnet is integrally restored to the initial state through the bearing force of the spring clamping piece, meanwhile, the two sets of rotating shafts are arranged on the inner wall of the damping frame, and when the second magnet rebounds, the second magnet can rotate around the rotating shafts. The eccentric wheels on the outer walls of the two rotating shafts are meshed, an auxiliary spring clamping piece pushes a second magnet attracted to a first magnet on the inner wall of the damping frame, and the whole wind wheel is assisted to rotate slowly.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation products, and more specifically, to a wind turbine blade damping mechanism. Background Art

[0002] A wind turbine is a device that uses wind energy to convert into electrical energy. Its basic structure includes a tower, blades, rotor, generator and control system. Tower: The tower is the structure that supports the entire wind turbine. It is usually made of steel or concrete. Its height can be determined according to the wind resources. Generally, the higher the tower, the greater the wind speed. Blades: The blades are the key components of a wind turbine. They are responsible for capturing wind energy and converting it into mechanical energy. The blades are usually designed based on aerodynamic principles to enable them to work effectively at various wind speeds. Rotor: The rotor connects the blades and the generator, transferring the kinetic energy of the blades' rotation to the generator. It is usually composed of a shaft and gears that can rotate the rotor part of the generator. Generator: The generator is the part that converts mechanical energy into electricity. A key component of electricity. When the blades of a wind turbine rotate, the magnetic field in the rotor and the coil in the stator generate current, thereby generating electricity. Control system: The control system is responsible for monitoring wind speed, wind direction and the operating status of the turbine, and adjusts the angle and speed of the blades based on this information to maintain the optimal operating state of the wind turbine and ensure safe operation. Wind turbines are usually installed in areas with rich wind resources, such as coastlines, mountains, grasslands, etc. They can be built individually or form wind farms for centralized power generation. With the continuous advancement of technology, the efficiency and performance of wind turbines have been continuously improved, becoming an important part of the renewable energy field, which is of great significance to reducing greenhouse gas emissions and protecting the environment.

[0003] Wind turbine blades are subject to two types of aerodynamic vibrations that may lead to severe blade vibrations, stall-induced vibrations, which occur at a specific range of inflow angles where the blades have negative aerodynamic damping, i.e. the vibrations increase over time, and vortex shedding-induced vibrations, which occur all the time. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a wind turbine blade damping mechanism, in which a spring clip is arranged between the damping frame and the second magnet. After the second magnet is attracted to the first magnet, the second magnet is restored to its initial state as a whole through the supporting force of the spring clip. At the same time, two groups of rotating shafts are arranged on the inner wall of the damping frame. When the second magnet rebounds, the eccentric wheels on the outer walls of the two groups of rotating shafts engage, and the auxiliary spring clip pushes the second magnet after being attracted to the first magnet on the inner wall of the damping frame, thereby assisting the wind wheel to rotate slowly as a whole, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wind turbine blade damping mechanism, comprising a wind wheel, an engine assembly is provided on one side of the wind wheel, a parts mounting groove is provided inside the engine assembly, a connecting column is fixedly connected inside the engine assembly, a parts matching ring is fixedly connected on one side of the wind wheel, and the parts matching ring is arranged inside the engine assembly, a damping ring is fixedly connected to the outer wall of the wind wheel, a sliding groove is provided on the outer wall of the damping ring, and a positioning piece is slidably connected inside the sliding groove.

[0006] In a preferred embodiment, a rotor positioning ring is provided between the connecting column and the part matching ring, the inner wall of the rotor positioning ring is fixedly connected to a limiting sleeve, a rolling rotor is provided inside the rotor positioning ring, and both ends of the rolling rotor are fixedly connected inside the limiting sleeve.

[0007] In a preferred embodiment, a sliding rail is provided on one side of the wind wheel, a rubber support head is fixedly connected to one side of the engine assembly, a positioning pin is fixedly connected to the inside of the rubber support head, and one end of the positioning pin contacts the inner wall of the sliding rail, a gap adjustment sleeve is fixedly connected to the outer wall of the rubber support head, and the gap adjustment sleeve is fitted on one side of the wind wheel.

[0008] In a preferred embodiment, the rubber support heads are provided in a plurality of groups, and the plurality of groups of rubber support heads are arranged in a circular array with respect to the outer wall of the engine assembly.

[0009] In a preferred embodiment, the outer wall of the engine assembly is fixedly connected with an external support rib, and one end of the external support rib is arranged on the outer wall of the wind wheel, one end of the external support rib is fixedly connected with a part positioning plate, the bottom of the part positioning plate is fixedly connected with a positioning support column, the bottom of the part positioning plate is fixedly connected with a keel support plate, and the keel support plate is arranged around the outer wall of the positioning support column, a first magnet is provided inside the sliding groove, and the first magnet is arranged at the bottom of the positioning plate.

[0010] In a preferred embodiment, the number of the external support ribs is multiple, and the multiple groups of external support ribs are arranged in a ring array state with respect to the outer wall of the engine assembly.

[0011] In a preferred embodiment, a damping frame is provided inside the positioning plate, and the damping frame is arranged on the top of the first magnet, a second magnet is provided inside the damping frame, an inner wall of the damping frame is fixedly connected with a bearing, an inner wall of the bearing is rotatably connected with a rotating shaft, an outer wall of the rotating shaft is fixedly connected with an eccentric wheel, a spring clip is fixedly connected inside the damping frame, and one end of the spring clip is fixedly connected to the top of the second magnet.

[0012] Technical effects and advantages of the utility model:

[0013] 1. When the wind wheel rotates slowly, the wind wheel as a whole drives the damping ring to rotate. During the rotation of the damping ring, the second magnet at the bottom of the damping frame attracts the multiple first magnets inside the damping ring, so that the wind wheel as a whole attracts the first magnet through the damping frame at the bottom of the multiple parts positioning disks to slow down the rotation speed. At the same time, a spring card is set between the damping frame and the second magnet. After the second magnet attracts the first magnet, the second magnet as a whole is restored to its initial state through the supporting force of the spring card. At the same time, two sets of rotating shafts are set on the inner wall of the damping frame. When the second magnet rebounds, the eccentric wheels on the outer walls of the two sets of rotating shafts are meshed, and the auxiliary spring card pushes the second magnet attracted by the first magnet on the inner wall of the damping frame to assist the wind wheel as a whole to rotate slowly.

[0014] 2. A gap adjustment sleeve is provided on the outer wall of the rubber support head to support the contact point between the rubber support head and the wind wheel, thereby reducing excessive friction between the rubber support head body and the sliding rail on one side of the wind wheel. At the same time, multiple rubber support heads are arranged between the wind wheel and the engine assembly, and the gap adjustment sleeves on the outer walls of the multiple rubber support heads are in contact with the outer wall of the wind wheel to correct the rotation posture of the wind wheel in a slow-speed state, thereby reducing the heavy force generated by the connection between the driving shaft and the wind wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view schematic diagram of the utility model.

[0016] Figure 2 It is a schematic cross-sectional view of the local structure of the wind wheel of the utility model.

[0017] Figure 3 for Figure 2 Enlarged schematic diagram at point A in the middle.

[0018] Figure 4 for Figure 2 Enlarged schematic diagram of point B in the middle.

[0019] Figure 5 for Figure 2 Enlarged schematic diagram at point C in the middle.

[0020] Figure 6 It is a schematic diagram of the local structure of the damping frame of the utility model.

[0021] The accompanying drawings are marked as follows: (1) wind wheel, (2) engine assembly, (3) part installation groove, (4) connecting column, (5) part matching ring, (6) rotor positioning ring, (7) limiting sleeve, (8) rolling rotor, (9) sliding rail, (10) rubber support head, (11) positioning pin, (12) gap adjustment sleeve, (13) damping ring, (14) sliding groove, (15) positioning plate, (16) external support rib, (17) part positioning plate, (18) positioning support column, (19) keel support plate, (20) first magnet, (21) damping frame, (22) second magnet, (23) bearing, (24) rotating shaft, (25) eccentric wheel, (26) spring card. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Refer to the instruction manual Figure 1-6 A wind turbine blade damping mechanism according to an embodiment of the utility model comprises a wind rotor 1, an engine assembly 2 is arranged on one side of the wind rotor 1, a parts installation groove 3 is opened inside the engine assembly 2, a connecting column 4 is fixedly connected inside the engine assembly 2, a parts matching ring 5 is fixedly connected on one side of the wind rotor 1, and the parts matching ring 5 is arranged inside the engine assembly 2, a rotor positioning ring 6 is arranged between the connecting column 4 and the parts matching ring 5, a limiting sleeve 7 is fixedly connected to the inner wall of the rotor positioning ring 6, a rolling rotor 8 is arranged inside the rotor positioning ring 6, and both ends of the rolling rotor 8 are fixedly connected to the inside of the limiting sleeve 7, and a rotor locating ring 6 is arranged on one side of the wind rotor 1. A part matching ring 5 is provided, and a rotor positioning ring 6 is sleeved between the part matching ring 5 and the connecting column 4 to position the part matching ring 5 on one side of the wind wheel 1. At the same time, a limiting sleeve 7 is provided inside the rotor positioning ring 6. When the wind wheel 1 rotates as a whole, the rolling rotor 8 inside the limiting sleeve 7 fits against the outer wall of the connecting column 4. The rotor positioning ring 6 drives the part matching ring 5 and the wind wheel 1 as a whole to rotate along the outer wall of the connecting column 4 to prevent the wind wheel 1 from deviating during the rotation process. At the same time, it is ensured that when the wind wheel 1 rotates slowly, the wind wheel 1 as a whole will not cause the center of gravity of the wind wheel 1 as a whole to face downward due to too slow a rotation speed, thereby causing compression deformation to the connecting column 4.

[0024] Refer to the instruction manual Figure 1-6Furthermore, a sliding rail 9 is provided on one side of the wind wheel 1, and a rubber support head 10 is fixedly connected to one side of the engine assembly 2. There are multiple groups of rubber support heads 10, and the multiple groups of rubber support heads 10 are arranged in a circular array state with respect to the outer wall of the engine assembly 2. A positioning pin 11 is fixedly connected to the inside of the rubber support head 10, and one end of the positioning pin 11 contacts the inner wall of the sliding rail 9. A gap adjustment sleeve 12 is fixedly connected to the outer wall of the rubber support head 10, and the gap adjustment sleeve 12 is attached to one side of the wind wheel 1. The maintenance personnel reduce the frequency of the overall transmission power of the wind wheel 1 by the engine assembly 2, so that the overall speed of the wind wheel 1 decreases slowly. A rubber support head 10 is provided on one side of the engine assembly 2, and the rubber support head 10 The outer wall fits in the sliding rail 9 on one side of the wind rotor 1. When the wind rotor 1 rotates, the rubber support head 10 on the outer wall of the engine assembly 2 slides in the sliding rail 9 on one side of the wind rotor 1 to buffer the rotation speed of the wind rotor 1 after deceleration. A gap adjustment sleeve 12 is provided on the outer wall of the rubber support head 10 to support the contact point between the rubber support head 10 and the wind rotor 1, thereby reducing excessive friction between the rubber support head 10 body and the sliding rail 9 on one side of the wind rotor 1. At the same time, multiple rubber support heads 10 are provided between the wind rotor 1 and the engine assembly 2, and the gap adjustment sleeves 12 on the outer walls of multiple rubber support heads 10 are in contact with the outer wall of the wind rotor 1, so that the rotation posture of the wind rotor 1 is corrected in the deceleration state, thereby reducing the heavy force generated by the connection between the driving shaft and the wind rotor 1;

[0025] Refer to the instruction manual Figure 1-6Further, the outer wall of the wind wheel 1 is fixedly connected to a damping ring 13, the outer wall of the damping ring 13 is provided with a sliding groove 14, the interior of the sliding groove 14 is slidably connected to a positioning piece 15, the outer wall of the engine assembly 2 is fixedly connected to an external support rib 16, and one end of the external support rib 16 is arranged on the outer wall of the wind wheel 1, the number of the external support rib 16 is multiple groups, and the multiple groups of external support ribs 16 are arranged in a ring array state with respect to the outer wall of the engine assembly 2, one end of the external support rib 16 is fixedly connected to a part positioning plate 17, and the part positioning plate 17 The bottom is fixedly connected with a positioning support column 18, the bottom of the part positioning plate 17 is fixedly connected with a keel support plate 19, and the keel support plate 19 is arranged around the outer wall of the positioning support column 18, the interior of the sliding groove 14 is provided with a first magnet 20, and the first magnet 20 is arranged at the bottom of the positioning plate 15, the interior of the positioning plate 15 is provided with a damping frame 21, and the damping frame 21 is arranged on the top of the first magnet 20, the interior of the damping frame 21 is provided with a second magnet 22, the inner wall of the damping frame 21 is fixedly connected with a bearing 23, and the inner wall of the bearing 23 is rotatably connected with The outer wall of the rotating shaft 24 is fixedly connected with an eccentric wheel 25, and the interior of the damping frame 21 is fixedly connected with a spring card 26, and one end of the spring card 26 is fixedly connected to the top of the second magnet 22. When the wind wheel 1 rotates slowly, the wind wheel 1 as a whole drives the damping ring 13 to rotate. During the rotation of the damping ring 13, the second magnet 22 at the bottom of the damping frame 21 attracts the multiple first magnets 20 inside the damping ring 13, so that the wind wheel 1 as a whole attracts the first magnet 20 through the damping frame 21 at the bottom of the multiple parts positioning plates 17, thereby slowing down the rotation of the first magnet 20. speed. At the same time, a spring card 26 is arranged between the damping frame 21 and the second magnet 22. After the second magnet 22 is attracted to the first magnet 20, the second magnet 22 is restored to its initial state as a whole through the supporting force of the spring card 26. At the same time, two groups of rotating shafts 24 are arranged on the inner wall of the damping frame 21. When the second magnet 22 rebounds, the eccentric wheels 25 on the outer walls of the two groups of rotating shafts 24 are engaged, and the auxiliary spring card 26 pushes the second magnet 22 attracted to the first magnet 20 on the inner wall of the damping frame 21, so as to assist the wind wheel 1 to rotate slowly as a whole.

[0026] Working principle: When the equipment is under inspection and maintenance, the maintenance personnel will reduce the frequency of the overall transmission power of the engine assembly 2 to the wind wheel 1, so that the overall speed of the wind wheel 1 will slowly decrease. A rubber support head 10 is set on one side of the engine assembly 2, and the outer wall of the rubber support head 10 fits in the sliding rail 9 on one side of the wind wheel 1. When the wind wheel 1 rotates, the rubber support head 10 on the outer wall of the engine assembly 2 slides in the sliding rail 9 on one side of the wind wheel 1 to buffer the speed of the wind wheel 1 after the speed is reduced. A gap adjustment sleeve 12 is set on the outer wall of the rubber support head 10 to support the contact point between the rubber support head 10 and the wind wheel 1, so as to reduce excessive friction between the rubber support head 10 body and the sliding rail 9 on one side of the wind wheel 1. At the same time, multiple rubber support heads 10 are set between the wind wheel 1 and the engine Between the engine components 2, the gap adjustment sleeves 12 on the outer walls of the multiple rubber support heads 10 are in contact with the outer wall of the wind wheel 1, so as to correct the rotation posture of the wind wheel 1 in a slow-speed state, and reduce the heavy force generated by the connection between the driving shaft and the wind wheel 1. A connecting column 4 is arranged on one side of the engine component 2, and one end of the connecting column 4 is arranged inside the wind wheel 1. A part matching ring 5 is arranged on one side of the wind wheel 1, and a rotor positioning ring 6 is sleeved between the part matching ring 5 and the connecting column 4 to position the part matching ring 5 on one side of the wind wheel 1. At the same time, a limiting sleeve 7 is arranged inside the rotor positioning ring 6. When the wind wheel 1 rotates as a whole, the rolling rotor 8 inside the limiting sleeve 7 is attached to the outer wall of the connecting column 4, and the rotor positioning ring 6 drives the part matching ring 5 and the wind wheel 1 as a whole. The whole rotates along the outer wall of the connecting column 4 to prevent the wind wheel 1 from deviating during the rotation process, and at the same time ensure that when the wind wheel 1 rotates slowly, the wind wheel 1 as a whole will not cause the center of gravity of the wind wheel 1 to face downward due to too slow rotation speed, causing compression deformation to the connecting column 4. A damping ring 13 is arranged on the outer wall of the wind wheel 1, and a plurality of external supporting ribs 16 are arranged on the outer wall of the engine assembly 2. A part positioning plate 17 is arranged at one end of the external supporting rib 16. A plurality of keel support plates 19 are arranged between the part positioning plate 17 and the damping ring 13 to support the outer wall of the positioning support column 18, so that the damping frame 21 of the outer wall of the positioning plate 15 is supported. When the wind wheel 1 rotates slowly, the wind wheel 1 as a whole drives the damping ring 13 to rotate, and the damping ring 13 rotates during In the embodiment, the second magnet 22 at the bottom of the damping frame 21 attracts the multiple first magnets 20 inside the damping ring 13, so that the wind wheel 1 as a whole attracts the first magnet 20 through the damping frame 21 at the bottom of the multiple parts positioning plates 17 to slow down the rotation speed. At the same time, a spring card 26 is set between the damping frame 21 and the second magnet 22. After the second magnet 22 attracts the first magnet 20, the second magnet 22 is restored to its initial state as a whole through the supporting force of the spring card 26. At the same time, two groups of rotating shafts 24 are set on the inner wall of the damping frame 21. When the second magnet 22 rebounds, the eccentric wheels 25 on the outer walls of the two groups of rotating shafts 24 are engaged, and the auxiliary spring card 26 pushes the second magnet 22 attracted to the first magnet 20 on the inner wall of the damping frame 21.The auxiliary wind wheel 1 rotates slowly as a whole.

[0027] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0028] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0029] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A wind turbine blade damping mechanism, comprising a wind wheel (1), characterized in that: An engine assembly (2) is provided on one side of the wind wheel (1), a parts installation groove (3) is provided inside the engine assembly (2), a connecting column (4) is fixedly connected inside the engine assembly (2), a parts matching ring (5) is fixedly connected on one side of the wind wheel (1), and the parts matching ring (5) is arranged inside the engine assembly (2), a damping ring (13) is fixedly connected to the outer wall of the wind wheel (1), a sliding groove (14) is provided on the outer wall of the damping ring (13), and a positioning piece (15) is slidably connected inside the sliding groove (14).

2. A wind turbine blade damping mechanism according to claim 1, characterized in that: A rotor positioning ring (6) is provided between the connecting column (4) and the part matching ring (5); the inner wall of the rotor positioning ring (6) is fixedly connected to a limiting sleeve (7); a rolling rotor (8) is provided inside the rotor positioning ring (6); and both ends of the rolling rotor (8) are fixedly connected to the inside of the limiting sleeve (7).

3. A wind turbine blade damping mechanism according to claim 1, characterized in that: A sliding rail (9) is provided on one side of the wind wheel (1); a rubber support head (10) is fixedly connected to one side of the engine assembly (2); a positioning pin (11) is fixedly connected to the inside of the rubber support head (10), and one end of the positioning pin (11) contacts the inner wall of the sliding rail (9); a gap adjustment sleeve (12) is fixedly connected to the outer wall of the rubber support head (10), and the gap adjustment sleeve (12) is attached to one side of the wind wheel (1).

4. A wind turbine blade damping mechanism according to claim 3, characterized in that: The rubber support heads (10) are provided in a plurality of groups, and the plurality of groups of rubber support heads (10) are arranged in a ring array state with respect to the outer wall of the engine component (2).

5. A wind turbine blade damping mechanism according to claim 1, characterized in that: The outer wall of the engine assembly (2) is fixedly connected to an external support rib (16), and one end of the external support rib (16) is arranged on the outer wall of the wind wheel (1); one end of the external support rib (16) is fixedly connected to a part positioning plate (17); the bottom of the part positioning plate (17) is fixedly connected to a positioning support column (18); the bottom of the part positioning plate (17) is fixedly connected to a keel support plate (19), and the keel support plate (19) is arranged around the outer wall of the positioning support column (18); a first magnet (20) is arranged inside the sliding groove (14), and the first magnet (20) is arranged at the bottom of the positioning plate (15).

6. A wind turbine blade damping mechanism according to claim 5, characterized in that: The number of the external support ribs (16) is multiple, and the multiple groups of external support ribs (16) are arranged in a ring array state with respect to the outer wall of the engine component (2).

7. A wind turbine blade damping mechanism according to claim 1, characterized in that: A damping frame (21) is provided inside the positioning piece (15), and the damping frame (21) is arranged on the top of the first magnet (20). A second magnet (22) is provided inside the damping frame (21). A bearing (23) is fixedly connected to the inner wall of the damping frame (21). A rotating shaft (24) is rotatably connected to the inner wall of the bearing (23). An eccentric wheel (25) is fixedly connected to the outer wall of the rotating shaft (24). A spring clip (26) is fixedly connected to the inside of the damping frame (21), and one end of the spring clip (26) is fixedly connected to the top of the second magnet (22).

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