Fusing type separating device of wind power blade turbulent flow element

Abstract

A fusing type disengaging device of a wind power blade turbulent flow element is characterized in that a half rope ring, close to one side of a hub, of a rope is arranged in a rope winding ring groove in the outer wall of an end cover of a sleeve in a sleeving mode, a fusing assembly in the end cover is provided with a power supply device and a plurality of conducting strips, and conduction can be avoided through the elastic force of a torsional spring in a locking state; the pawl disc can rotate relative to the ratchet wheel disc to the separation position where the pawl and the ratchet are mutually blocked, at the moment, due to the fact that the conducting strips stay to the mutual contact position after rotating, the conducting parts at the two ends of the power supply device can be mutually conducted to form a heating loop, and heat of the heating loop can be transmitted to the rope winding ring groove to burn out the positioning rope. Therefore, the positioning rope can be separated from the end cover, the turbulent flow element can be reliably and efficiently separated from the wind power blade, an operator only needs to pull the traction rope at will, and the workload in the wind power blade installation process is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of wind turbine blades, and more particularly to a fusible disconnection device for a wind turbine blade turbulence element. Background Technology

[0002] Wind power, as a clean energy source, has been widely used globally. Wind turbine blades are the core component of wind turbine generators, capturing wind energy during rotation and converting it into electrical energy. With the development of wind power technology, the capacity of individual wind turbine units is continuously increasing, as are the blade length and flexibility, and the windward area of ​​the blades. After installation but before loading, the blades are susceptible to wind resistance, leading to flutter due to aerodynamic forces, which shortens the blade's fatigue life and adversely affects the subsequent stable operation of the wind turbine. Therefore, aerodynamic elements are pre-installed on wind turbine blades. During installation, these elements turbulent the wind forces acting on the blades, reducing vibration. Once the blades are installed and ready for operation, the aerodynamic elements are removed.

[0003] Existing methods for installing agitators include rope winding, where multiple agitators are threaded onto ropes, which are then wound around the wind turbine blades. The two ends of the ropes are partially looped around the rotor hub and the blade tip, respectively. However, there is a lack of reliable and efficient methods to separate the ropes from the hub or blades, making the process of detaching the agitators time-consuming and labor-intensive, which greatly increases the workload of wind turbine blade installation. Summary of the Invention

[0004] The purpose of this invention is to provide a fusible disconnection device for a wind turbine blade turbulence element, enabling the turbulence element to reliably and efficiently detach from the wind turbine blade.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a fusible disconnection device for a wind turbine blade turbulence element, wherein the turbulence element is sleeved on a positioning rope, the positioning rope is wound around the wind turbine blade, and the disconnection device is used to disconnect the positioning rope from the wind turbine blade. It includes a sleeve installed on the hub of the wind turbine rotor, an end cap provided at the end of the sleeve away from the hub, a rope loop groove for a half-rope loop of one end of the positioning rope to be sleeved on the outer wall of the end cap, a fusible component provided on the inner side of the end cap, the fusible component including a ratchet disc and a pawl disc sleeved on the outer side of the ratchet disc, a plurality of ratchet teeth provided circumferentially on the outer side of the ratchet disc, and a plurality of pawls provided circumferentially on the inner wall of the pawl disc, the plurality of pawls being able to block the plurality of ratchet teeth respectively, so as to limit the rotation angle of the ratchet disc inside the pawl disc; A power supply device is inserted into the ratchet disc. The two ends of the power supply device are located on both sides of the center line of the ratchet disc along the axial direction. The conductive part of one end of the power supply device is connected to the first conductive plate, and the conductive part of the other end is connected to a torsion spring that can conduct electricity. A positioning support rod extends from one side of the torsion spring and is connected to the pawl disc. A conductive support rod extends from the other side of the torsion spring and is connected to the second conductive plate on the outer wall of the pawl disc. The elastic force of the torsion spring can make the pawl disc rotate relative to the ratchet disc to the locked position. The outer wall of the ratchet disc is provided with a ratchet conductive plate, and the pawl disc is provided with a traction hole. A traction rope is threaded through the traction hole and extends to the outside of the end cap. The traction rope can make the pawl disc rotate relative to the ratchet disc from the locked position to the disengaged position where the pawl and ratchet teeth block each other. When the ratchet disc is in the disengaged position, the first and second conductive plates can simultaneously contact the ratchet conductive plate, thereby forming a heating circuit in the inner cavity of the end cover that enables the conductive parts at both ends of the power supply device to conduct to each other. The heat of the heating circuit can be transferred to the rope winding groove and burn off the positioning rope so that the positioning rope can be detached from the end cover.

[0006] Preferably, the outer wall of the sleeve is provided with multiple weight-reducing grooves.

[0007] Preferably, a tongue plate is provided on one side of the outer wall of the sleeve, and an auxiliary rope is threaded through the through hole of the tongue plate.

[0008] Preferably, the outer wall of the ratchet disc is provided with multiple ratchet conductive plates, and the multiple ratchet conductive plates are respectively close to multiple pawls.

[0009] Preferably, the ratchet disc has a disc-shaped structure in the middle along the axial direction, the disc-shaped structure is slidably connected to the inner wall of the pawl disc, the two sides of the disc-shaped structure along the axial direction are ratchet teeth, and multiple pawls are also located on the two sides of the disc-shaped structure along the axial direction.

[0010] Preferably, the power supply device is a battery, with the positive and negative terminals of the battery connected to the first conductive sheet and the torsion spring, respectively.

[0011] According to the above technical solution, the beneficial effects of the present invention are: This invention places a half-loop of the rope near the hub within a rope-winding groove on the outer wall of the end cap. The fusible assembly inside the end cap contains a power supply device and multiple conductive plates. In the locked state, the elastic force of the torsion spring prevents conduction. When the traction rope is pulled, the pawl disc rotates relative to the ratchet disc to a disengaged position where the pawl and ratchet teeth block each other. At this point, because the multiple conductive plates remain in contact after rotation, the conductive parts at both ends of the power supply device can conduct to each other, forming a heating circuit. The heat from this circuit is transferred to the rope-winding groove and burns the positioning rope, causing it to detach from the end cap. This allows the turbulence element to reliably and efficiently detach from the wind turbine blade. The torsion spring ensures that the heating circuit will not be accidentally activated when the traction rope is not pulled, and the pawl and ratchet teeth's engagement ensures that the heating circuit is always activated when the traction rope is pulled. This can be achieved simply by the operator pulling the traction rope, significantly reducing the workload during wind turbine blade installation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the present invention; Figure 2 Side view of the sleeve and end cap; Figure 3 This is a schematic diagram of a fuse assembly; the second conductive piece is omitted from the diagram. Figure 4 This is a schematic diagram of a fuse assembly; the pawl is omitted from the diagram. Figure 5 This is a schematic diagram of the ratchet disc and the power supply device.

[0013] The markings in the diagram are: 1. Hub, 2. Sleeve, 3. End cap, 4. Positioning rope, 5. Tongue plate, 6. Traction rope, 7. Auxiliary rope, 8. Rope loop groove, 9. Weight reduction groove, 10. Pawl disc, 11. Traction hole, 12. Pawl, 13. Ratchet disc, 14. Ratchet tooth, 15. Torsion spring, 16. Power supply device, 17. First conductive plate, 18. Second conductive plate, 19. Ratchet tooth conductive plate. Detailed Implementation

[0014] Referring to the attached diagram, the specific implementation method is as follows: like Figure 1 As shown, a fusible release device for a wind turbine blade spoiler element is disclosed. The spoiler element is sleeved on a positioning rope 4, which is wound around the wind turbine blade. This release device is used to detach the positioning rope 4 from the wind turbine blade. It includes a sleeve 2 mounted on the hub 1 of the wind turbine rotor, with an end cap 3 at the end of the sleeve 2 away from the hub 1. Figure 2 As shown, the outer wall of the sleeve 2 is provided with multiple weight-reducing grooves 9, the outer wall of the end cap 3 is provided with a rope loop groove 8 for the half rope loop of one end of the positioning rope 4 to be fitted, and the inner side of the end cap 3 is provided with a fuse assembly.

[0015] like Figure 3 As shown, the fusible assembly includes a ratchet disc 13 and a pawl disc 10 sleeved on the outside of the ratchet disc 13. The outer side of the ratchet disc 13 has multiple ratchet teeth 14 arranged circumferentially, and the inner wall of the pawl disc 10 has multiple pawls 12 arranged circumferentially. The multiple pawls 12 can respectively block the multiple ratchet teeth 14 to limit the rotation angle of the ratchet disc 13 inside the pawl disc 10. Figure 4 , 5 As shown, in this embodiment, the ratchet disk 13 has a disc-shaped structure in the middle along the axial direction. The disc-shaped structure is slidably connected to the inner wall of the pawl disk 10. Both sides of the disc-shaped structure along the axial direction are ratchet teeth 14, and multiple pawls 12 are also located on both sides of the disc-shaped structure along the axial direction.

[0016] like Figure 3-5 As shown, a battery is inserted into the ratchet disk 13 as a power supply device 16. The positive and negative terminals of the battery are located on both sides of the center line of the ratchet disk 13 along the axial direction. One end of the battery is connected to the first conductive plate 17, and the other end of the battery is connected to a conductive torsion spring 15. A positioning support rod extends from one side of the torsion spring 15 and is connected to the pawl disk 10. A conductive support rod extends from the other side of the torsion spring 15 and is connected to the second conductive plate 18 on the outer wall of the pawl disk 10. The elastic force of the torsion spring 15 can make the pawl disk 10 rotate relative to the ratchet disk 13 to the locked position.

[0017] like Figure 4 , 5 As shown, the outer wall of the ratchet disk 13 is provided with multiple ratchet conductive plates 19, which are close to multiple pawls 12. The pawl disk 10 is provided with a traction hole 11, and a traction rope 6 is threaded through the traction hole 11. The traction rope 6 extends to the outside of the end cover 3. The traction rope 6 can be used to rotate the pawl disk 10 relative to the ratchet disk 13 from the locked position to the disengaged position where the pawls 12 and ratchet teeth 14 block each other.

[0018] like Figure 4 As shown, the ratchet disc 10 is in the disengaged position at this time, and the first conductive plate 17 and the second conductive plate 18 can simultaneously contact the ratchet conductive plate 19, thereby forming a heating circuit in the inner cavity of the end cover 3 in which the positive and negative terminals of the battery are interconnected. The heat of the heating circuit can be transferred to the rope loop groove 8 and burn out the positioning rope 4. Since the multiple ratchet conductive plates 19 are close to the multiple ratchet 12, it is not necessary to deliberately adjust the relative positions of the ratchet disc 10 and the ratchet disc 13 during installation.

[0019] In this embodiment, the elastic force of the torsion spring 15 in the locked state can prevent the power supply circuit from being connected. When the traction rope 6 is pulled, the rotation angle of the pawl disc 10 relative to the ratchet disc 13 can be precisely controlled due to the mutual obstruction of the pawl 12 and the ratchet 14. After the multiple conductive plates rotate, they will stay in the position of mutual contact, and the positive and negative terminals of the battery can be connected to each other to form a heating circuit. After the positioning rope 4 is burned off, it will detach from the end cover 3, and the turbulence element can detach from the wind turbine blade.

[0020] In addition, such as Figure 1 As shown, a tongue plate 5 is provided on one side of the outer wall of the sleeve 2. An auxiliary rope 7 is inserted through the through hole of the tongue plate 5. When the turbulence element and the positioning rope are detached from the wind turbine blade, the sleeve 2 will remain on the hub 1. At this time, by pulling the auxiliary rope 7, the sleeve 2 can also be smoothly detached from the hub 1.

Claims

1. A fusible release device for a wind turbine blade spoiler element, wherein the spoiler element is sleeved on a positioning rope (4), the positioning rope (4) is wound around the wind turbine blade, and the release device is used to release the positioning rope (4) from the wind turbine blade, characterized in that: The sleeve (2) is installed on the hub (1) of the wind turbine rotor. The end of the sleeve (2) away from the hub (1) is provided with an end cap (3). The outer wall of the end cap (3) is provided with a rope loop groove (8) for the half rope loop of one end of the positioning rope (4) to be fitted. The inner side of the end cap (3) is provided with a fuse assembly. The fuse assembly includes a ratchet disc (13) and a pawl disc (10) fitted on the outside of the ratchet disc (13). The outer side of the ratchet disc (13) is provided with multiple ratchet teeth (14) in the circumferential direction. The inner wall of the pawl disc (10) is provided with multiple pawls (12) in the circumferential direction. The multiple pawls (12) can block the multiple ratchet teeth (14) respectively to limit the rotation angle of the ratchet disc (13) inside the pawl disc (10). A power supply device (16) is inserted on the ratchet disk (13). The two ends of the power supply device (16) are located on both sides of the center line of the ratchet disk (13) along the axial direction. The conductive part of one end of the power supply device (16) is connected to the first conductive plate (17), and the conductive part of the other end is connected to the conductive torsion spring (15). A positioning support rod extends from one side of the torsion spring (15) and is connected to the pawl disk (10). A conductive support rod extends from the other side of the torsion spring (15) and is connected to the second conductive plate (18) on the outer wall of the pawl disk (10). The elastic force of the torsion spring (15) can make the pawl disk (10) rotate relative to the ratchet disk (13) to the locked position. The outer wall of the ratchet disc (13) is provided with a ratchet conductive plate (19), and the pawl disc (10) is provided with a traction hole (11). A traction rope (6) is threaded through the traction hole (11) and extends to the outside of the end cap (3). The traction rope (6) can make the pawl disc (10) rotate relative to the ratchet disc (13) from the locked position to the disengaged position where the pawl (12) and ratchet (14) block each other. When the ratchet disc (10) is in the disengaged position, the first conductive plate (17) and the second conductive plate (18) can simultaneously contact the ratchet conductive plate (19), thereby forming a heating circuit in the inner cavity of the end cover (3) that allows the conductive parts at both ends of the power supply device (16) to conduct to each other. The heat of the heating circuit can be transferred to the rope loop groove (8) and burn the positioning rope (4) so ​​that the positioning rope (4) can be disengaged from the end cover (3).

2. The fusible disconnection device for a wind turbine blade turbulence element according to claim 1, characterized in that: Multiple weight-reducing grooves (9) are provided on the outer wall of the sleeve (2).

3. The fusible disconnection device for a wind turbine blade turbulence element according to claim 1, characterized in that: A tongue plate (5) is provided on one side of the outer wall of the sleeve (2), and an auxiliary rope (7) is passed through the through hole of the tongue plate (5).

4. The fusible disconnection device for a wind turbine blade turbulence element according to claim 1, characterized in that: The outer wall of the ratchet disk (13) is provided with multiple ratchet conductive plates (19), and the multiple ratchet conductive plates (19) are respectively close to multiple pawls (12).

5. The fusible disconnection device for a wind turbine blade turbulence element according to claim 1, characterized in that: The ratchet disc (13) has a disc-shaped structure in the middle along the axial direction. The disc-shaped structure is slidably connected to the inner wall of the pawl disc (10). Both sides of the disc-shaped structure along the axial direction are ratchet teeth (14), and multiple pawls (12) are also located on both sides of the disc-shaped structure along the axial direction.

6. The fusible disconnection device for a wind turbine blade turbulence element according to claim 1, characterized in that: The power supply device (16) is a battery, and the positive and negative terminals of the battery are connected to the first conductive sheet (17) and the torsion spring (15) respectively.

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