Anti-icing device for wind turbine blade and Anti-icing method

Abstract

An anti-icing device for a wind turbine blade, comprising a vibration unit (200) and an actuating unit (300). The vibration unit (200) comprises a mounting base (201) arranged on a wind turbine unit (100), a vibration assembly (202) arranged on the mounting base (201), and a support column (203) arranged on the mounting base (201). The actuating unit (300) comprises an actuating assembly (301) rotatably arranged on the support column (203) and abutting against the vibration assembly (202), a driving assembly (303) rotatably arranged on the support column (203), an energy storage assembly (302) rotatably arranged on the support column (203) and having two ends respectively connected to the actuating assembly (301) and the driving assembly (303), and a snap-fitting assembly (304) having one end rotatably arranged on the support column (203) and the other end snap-fitted with the actuating assembly (301).

Description

A wind turbine blade anti-icing device and method Technical Field

[0001] This invention relates to the technical field of wind turbine units, and in particular to a wind turbine blade anti-icing device and method. Background Technology

[0002] The hazards of icing on wind turbine blades mainly include reduced power generation efficiency, accelerated mechanical wear, and increased safety hazards. Reduced power generation efficiency: Icing increases blade weight and drag, leading to lower power generation efficiency. It also alters the aerodynamic properties of the blades, causing unstable power output and affecting grid stability. Accelerated mechanical wear: Icing causes the mechanical components of the wind turbine to bear a greater load, accelerating wear and damage. This not only affects the normal operation of the wind turbine but also increases maintenance costs. Increased safety hazards: Icing increases the safety hazards of wind turbines. Under extreme weather conditions, icing can lead to blade breakage, turbine collapse, and other serious consequences, threatening lives and property. Furthermore, icing can cause significant discrepancies between anemometer readings and actual wind speeds, resulting in erroneous operational data. It can also alter the aerodynamic characteristics of the turbine, such as increased aerodynamic noise due to uneven blade mass distribution, which in severe cases can affect the lives of nearby residents.

[0003] However, existing devices that rely on vibration for physical anti-icing require additional electrical energy as a driving force, and the fan blades are in a state of relative rotation, so installation and wiring issues need to be considered. Summary of the Invention

[0004] In view of the problems existing in the current wind turbine blade anti-icing devices, the present invention is proposed.

[0005] Therefore, the present invention provides a wind turbine blade anti-icing device, the purpose of which is to solve the technical problem that additional electrical energy is required as the driving force, while the wind turbine blades are in a state of relative rotation, so the installation and wiring issues need to be considered.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a tool for cleaning ice buildup on a fan unit, comprising,

[0007] The vibration unit includes a mounting base disposed on the fan unit, a vibration assembly disposed on the mounting base, and a support column disposed on the mounting base; and,

[0008] The excitation unit includes an excitation component rotatably mounted on the support column and abutting against the vibration component, a drive component rotatably mounted on the support column, an energy storage component rotatably mounted on the support column and connected at both ends to the excitation component and the drive component respectively, and a snap-fit ​​component with one end rotatably mounted on the support column and the other end snapped into the excitation component.

[0009] As a preferred embodiment of the wind turbine blade anti-icing device of the present invention, the wind turbine unit includes a support base, a rotating base rotatably disposed on the support base, and blades disposed on the rotating base for mounting the mounting base.

[0010] As a preferred embodiment of the wind turbine blade anti-icing device of the present invention, the vibration component includes a connecting seat that abuts against the blade and is engaged with the mounting base, a vibration spring with one end disposed on the connecting seat, and a counterweight ball disposed on the other end of the vibration spring.

[0011] As a preferred embodiment of the wind turbine blade anti-icing device of the present invention, the excitation component includes a rotating sleeve rotatably mounted on the support column and engaged with the locking component, a support rod with one end mounted on the rotating sleeve, and a hammer mounted on the other end of the support rod and abutting against the counterweight ball.

[0012] As a preferred embodiment of the wind turbine blade anti-icing device of the present invention, the drive assembly includes a rotating sleeve rotatably mounted on the support column, a support rod rotatably mounted on the rotating sleeve, and a counterweight on the other end of the support rod.

[0013] As a preferred embodiment of the wind turbine blade anti-icing device of the present invention, the energy storage component includes a spring disposed on the outer periphery of the support column and located between the excitation component and the drive component, a second snap-fit ​​post disposed on one end of the spring and connected to the first rotating sleeve, and a first snap-fit ​​post disposed on the other end of the spring and slidably connected to the second rotating sleeve.

[0014] As a preferred embodiment of the wind turbine blade anti-icing device of the present invention, the following features are provided: the support column is provided with an installation groove for accommodating the snap-fit ​​assembly; the rotating sleeve is provided with a snap-fit ​​groove for snapping the snap-fit ​​assembly; the snap-fit ​​assembly includes a snap-fit ​​strip with one end disposed in the installation groove and the other end protruding from the installation groove and snapping with the snap-fit ​​groove, an elastic element disposed in the installation groove and abutting against the snap-fit ​​strip, and a pin disposed on the snap-fit ​​strip and rotatably connected to the support column; the snap-fit ​​strip is located inside the spring and abuts against it.

[0015] As a preferred embodiment of the wind turbine blade anti-icing device of the present invention, wherein: a connecting component is provided between the energy storage component and the rotating sleeve 2; the connecting component includes a rotating disk rotatably mounted on the support column and slidably connected and engaged with the locking column 1, two sets of anti-reverse teeth respectively meshing on the rotating disk, a baffle mounted on the locking column 1, and an elastic element 2 mounted on the locking column 1 and connected at both ends to the baffle and the rotating disk respectively.

[0016] As a preferred embodiment of the wind turbine blade anti-icing device of the present invention, wherein: the rotating sleeve one is provided with a slot for embedding the snap-fit ​​post two.

[0017] The beneficial effects of this invention are: by using the gravity of the drive component itself as the power source, the problem of needing to use additional electrical energy as the driving force is solved, and the problem can be solved without power. Since the fan blades are in a state of relative rotation, the technical problems of installation and wiring need to be considered.

[0018] In view of the problems existing in the current wind turbine blade anti-icing devices, the present invention is proposed.

[0019] Therefore, the present invention provides an anti-icing method, the purpose of which is to solve the technical problem of needing to use additional electrical energy as a driving force.

[0020] To solve the above-mentioned technical problems, the present invention provides the following technical solution: Utilizing the aforementioned wind turbine blade anti-icing device, the method includes the following steps:

[0021] The mounting base is installed onto the blade, such that the vibration assembly rests against the blade;

[0022] When the blade rotates, the drive assembly rotates relative to the support column because the center of gravity of the drive assembly is always downward.

[0023] The excitation component is held in place by the snap-fit ​​component, causing the excitation component to rotate and move with the support column, and the energy storage component is driven by the drive component to store energy.

[0024] When the energy storage component stores energy, it undergoes elastic contraction and deformation, causing the energy storage component to squeeze the snap-fit ​​component, which in turn causes the snap-fit ​​component to displace and separate from the excitation component.

[0025] When the locking component releases its restriction on the excitation component, the energy stored in the energy storage component is released through the excitation component, enabling the excitation component to rotate.

[0026] When the excitation component rotates, it impacts the vibration component, causing the vibration component to vibrate. The vibration is then transmitted to the blades, causing the blades to vibrate synchronously, thus achieving the purpose of preventing icing. It can also break up ice blocks when they freeze, making it easier for the ice blocks to fall off.

[0027] When the energy storage component releases energy, it undergoes elastic expansion deformation, causing the snap-fit ​​component to spring up and continue to limit the excitation component, so that the energy storage component can continue to store energy.

[0028] Repeat the above steps to automatically trigger vibration and automatically perform physical anti-icing operation by relying on the gravitational potential energy generated when the blades rotate.

[0029] The beneficial effects of this invention are that it solves the technical problem of needing to use additional electrical energy as a driving force by using the gravity of the driving component itself as the power source. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 is a schematic diagram of the overall structure of the wind turbine blade anti-icing device of the present invention.

[0032] Figure 2 is a partial structural schematic diagram of the anti-icing device for wind turbine blades of the present invention.

[0033] Figure 3 is a schematic diagram of the vibration unit in the wind turbine blade anti-icing device of the present invention.

[0034] Figure 4 is a partial structural cross-sectional view of the wind turbine blade anti-icing device of the present invention.

[0035] Figure 5 is an enlarged view of point A in Figure 4.

[0036] Figure 6 is an enlarged schematic diagram of point B in Figure 4.

[0037] Figure 7 is a partial exploded view of the anti-icing device for wind turbine blades of the present invention.

[0038] Figure 8 is an enlarged view of point C in Figure 7.

[0039] Figure 9 is an enlarged schematic diagram of point D in Figure 7.

[0040] Figure 10 is a schematic diagram of the snap-fit ​​component in the wind turbine blade anti-icing device of the present invention.

[0041] Figure Descriptions: 100, Fan Unit; 101, Support Base; 102, Rotating Base; 103, Blade; 200, Vibration Unit; 201, Mounting Base; 202, Vibration Component; 202a, Connecting Base; 202b, Vibration Spring; 202c, Configuration Ball; 203, Support; 203a, Mounting Slot; 300, Excitation Unit; 301, Excitation Component; 301a, Hammer; 301b, Support Rod 1; 301c, Rotating Sleeve 1; 301c-1, Snap-fit ​​Slot; 301c-2. Slot; 301c-3, Bearing slot; 302, Energy storage component; 302a, Spring; 302b, Snap-fit ​​post one; 302c, Snap-fit ​​post two; 303, Drive component; 303a, Counterweight; 303b, Support rod two; 303c, Rotating sleeve two; 304, Snap-fit ​​component; 304a, Snap-fit ​​strip; 304b, Elastic element one; 304c, Pin; 305, Connecting component; 305a, Rotating disk; 305b, Anti-reverse gear; 305c, Elastic element two; 305d, Baffle. Detailed Implementation

[0042] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0043] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0044] Secondly, the term "an 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 phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive, either alone or selectively, with other embodiments.

[0045] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0046] Example 1, referring to Figures 1-10, is the first embodiment of the present invention, which provides a wind turbine blade anti-icing device for cleaning ice on the wind turbine unit 100. The wind turbine unit 100 includes a support base 101, a rotating base 102 rotatably disposed on the support base 101, and blades 103 disposed on the rotating base 102 for mounting the mounting base 201.

[0047] The device includes a vibration unit 200 and an excitation unit 300;

[0048] The vibration unit 200 includes a mounting base 201 disposed on the fan unit 100, a vibration component 202 disposed on the mounting base 201, and a support column 203 disposed on the mounting base 201; the excitation unit 300 includes an excitation component 301 rotatably disposed on the support column 203 and abutting against the vibration component 202, a drive component 303 rotatably disposed on the support column 203, an energy storage component 302 rotatably disposed on the support column 203 and connected at both ends to the excitation component 301 and the drive component 303 respectively, and a snap-fit ​​component 304 rotatably disposed at one end on the support column 203 and snap-fitted at the other end to the excitation component 301.

[0049] The vibration assembly 202 includes a connecting seat 202a that abuts against the blade 103 and is snapped into the mounting base 201, a vibration spring 202b with one end set on the connecting seat 202a, and a counterweight ball 202c set on the other end of the vibration spring 202b. The vibration spring 202b has elastic deformation. When it is impacted, the vibration spring 202b converts part of the impact force into vibration and transmits it to the connecting seat 202a, while the other part of the impact force acts directly on the blade 103 through the vibration spring 202b and the connecting seat 202a, thereby improving the ice-breaking effect and better preventing icing. Due to the configuration of the counterweight ball 202c, when the blade 103 rotates, the vibration spring 202b can also generate a certain low-frequency vibration under the influence of the gravity of the counterweight ball 202c.

[0050] The rotating sleeve 301c is provided with a slot 301c-2 for embedding the snap-fit ​​post 302c; the snap-fit ​​post 302c can be snapped in the slot 301c-2 for easy assembly, and a bearing groove 301c-3 for installing bearings is provided.

[0051] During use, the connecting seat 202a is placed against the blade 103, and the mounting seat 201 is installed on the blade 103, so that the connecting seat 202a can maintain a reliable connection with the blade 103. When the blade 103 rotates, the counterweight ball 202c is displaced due to the gravity of the counterweight ball 202c, causing the vibration spring 202b to undergo elastic deformation, thereby generating low-frequency vibration. This vibration force is transmitted to the blade 103 through the connecting seat 202a, thereby enabling passive anti-icing.

[0052] When the blade 103 rotates, it drives the vibration assembly 202 to move. Since the support column 203 is in different positions depending on the blade 103's position, and the drive assembly 303 remains vertical and always pointing downwards, the drive assembly 303 can rotate relative to the support column 203. The drive assembly 303 transmits the torque generated by this rotation to the energy storage assembly 302 via the connecting assembly 305. Meanwhile, the excitation assembly 301 is held in place by the locking assembly 304 and cannot rotate, allowing the energy storage assembly 302 to store energy. Simultaneously, the energy storage assembly 302 contracts and compresses the locking assembly 304. When the locking assembly 304 is completely compressed and retracted into the mounting groove by the energy storage assembly 302... After step 203a, the locking component 304 will release the restriction on the excitation component 301, allowing the excitation component 301 to rotate. The elastic potential energy stored in the energy storage component 302 will drive the excitation component 301 to rotate. The connecting component 305 is blocked by its anti-reverse structure, preventing the connecting component 305 from rotating. When the excitation component 301 rotates, it will collide with the counterweight ball 202c, causing the counterweight ball 202c to be subjected to impact force, which will be transmitted to the vibration spring 202b and the connecting seat 202a. This will cause the vibration spring 202b to generate high-frequency vibration, and the vibration frequency will gradually decrease, thereby clearing the ice on the blade 103 and achieving the purpose of preventing icing.

[0053] When the energy stored in the vibration component 202 is released, the vibration component 202 will expand, causing the snap-fit ​​component 304 to spring up and continue to snap into the snap-fit ​​groove 301c-1, fixing the rotating sleeve 301c and keeping the excitation component 301 in a fixed position. After the excitation component 301 is fixed, the energy storage component 302 is also relatively fixed, so that when the drive component 303 rotates relative to it, the energy storage operation can be performed again through the connecting component 305.

[0054] Through the above-mentioned automatic energy storage and release operations, the drive component 303 can automatically generate impact and vibration without the need for additional power, relying on its own gravitational potential energy to clean the ice on the blade 103 and achieve the purpose of preventing icing. Furthermore, since the blade 103 has centrifugal force when rotating and its surface is coated, the vibration generated by this device can better prevent ice from forming on the blade 103, thereby achieving the purpose of preventing icing.

[0055] Example 2, referring to Figures 1-10, is the second embodiment of the present invention. This embodiment differs from the first embodiment in that: the excitation component 301 includes a rotating sleeve 301c rotatably mounted on the support column 203 and engaged with the engaging component 304, a support rod 301b with one end mounted on the rotating sleeve 301c, and a hammer 301a mounted on the other end of the support rod 301b and abutting against the counterweight ball 202c.

[0056] Furthermore, the support column 203 is provided with a mounting groove 203a for accommodating the snap-fit ​​assembly 304; the rotating sleeve 301c is provided with a snap-fit ​​groove 301c-1 for snapping the snap-fit ​​assembly 304; the snap-fit ​​assembly 304 includes a snap-fit ​​strip 304a with one end disposed in the mounting groove 203a and the other end protruding from the mounting groove 203a and snapping with the snap-fit ​​groove 301c-1, an elastic element 304b disposed in the mounting groove 203a and abutting against the snap-fit ​​strip 304a, and a pin 304c disposed on the snap-fit ​​strip 304a and rotatably connected to the support column 203; the snap-fit ​​strip 304a is located inside and abuts against the spring 302a.

[0057] The locking strip 304a is supported by the pin 304c, allowing it to rotate within the support column 203. The elastic element 304b pushes the locking strip 304a to flip, causing it to pop out of the mounting slot 203a. One end of the locking strip 304a then engages with the locking groove 301c-1, fixing the rotating sleeve 301c and preventing it from rotating, thus enabling energy storage operation.

[0058] During use, when the energy storage component 302 is in the expanded state, the elastic element 304b pushes the locking strip 304a to flip, causing the locking strip 304a to engage in the locking groove 301c-1, thus fixing the locking groove 301c-1. This allows the drive component 303 to rotate relative to the energy storage component 302, which in turn drives the energy storage component 302 to rotate and retract via the connecting component 305, thus performing energy storage. When the energy storage component 302 retracts to the state where the locking strip 304a is pressed into the mounting groove 203a, the locking strip 304a exits from the locking groove 301c-1. The sliding motion causes the locking strip 304a to release its restriction on the rotating sleeve 301c. The energy storage component 302 drives the rotating sleeve 301c to rotate, which in turn drives the support rod 301b to rotate. The support rod 301b then drives the hammer 301a to rotate, causing the hammer 301a to strike the counterweight ball 202c. This causes the vibration component 202 to vibrate and impact, which can vibrate and break up the ice on the blade 103 to prevent icing. It can also break large ice blocks into smaller ones, making it easier for the ice to fall off and melt.

[0059] The remaining structure is the same as that in Example 1.

[0060] Example 3, referring to Figures 1-10, is the third embodiment of the present invention. This embodiment differs from the second embodiment in that the drive assembly 303 includes a rotating sleeve 303c rotatably mounted on the support column 203, a support rod 303b with one end mounted on the rotating sleeve 303c, and a counterweight 303a mounted on the other end of the support rod 303b.

[0061] Furthermore, the energy storage component 302 includes a spring 302a disposed on the outer periphery of the support column 203 and located between the excitation component 301 and the drive component 303, a second snap-fit ​​post 302c disposed on one inner end of the spring 302a and connected to the first rotating sleeve 301c, and a first snap-fit ​​post 302b disposed on the other end of the spring 302a and slidably connected to the second rotating sleeve 303c. When the connecting component 305 rotates, the first snap-fit ​​post 302b is driven to rotate relative to the spring 302a, and the first snap-fit ​​post 302b drives the spring 302a to contract and store energy, thereby enabling energy storage operation.

[0062] Among them, a connecting component 305 is provided between the energy storage component 302 and the rotating sleeve 303c; the connecting component 305 includes a rotating disk 305a rotatably mounted on the support column 203 and slidably connected and engaged with the first locking column 302b, two sets of anti-reverse teeth 305b respectively meshing on the rotating disk 305a, a baffle 305d mounted on the first locking column 302b, and an elastic element 305c mounted on the first locking column 302b and connected at both ends to the baffle 305d and the rotating disk 305a respectively.

[0063] When the rotating sleeve 303c rotates relative to the support column 203, the anti-reverse gear 305b drives the rotating disk 305a to rotate relative to it. The anti-reverse gear 305b with its inclined block structure ensures that the rotating disk 305a can only rotate in one direction. This allows the rotating sleeve 303c to rotate when it rotates or swings relative to the support column 203c. When the rotating sleeve 303c resets, it will not rotate. The elastic element 305c pushes the rotating disk 305a to move, so that the rotating disk 305a can move back and forth with the anti-reverse gear 305b during power storage, thus achieving the purpose of preventing reverse rotation. The locking column 302b slides with the rotating disk 305a, providing space for the rotating disk 305a to move. When the rotating disk 305a rotates, it can drive the locking column 302b to rotate, thereby enabling the spring 302a to store power.

[0064] During use, due to the weight of the counterweight 303a, it remains vertically upright and pointing downwards. Therefore, when the support column 203 undergoes relative displacement, the counterweight 303a drives the second support rod 303b and the second rotating sleeve 303c to rotate relative to each other around the support column 203. The excitation component 301 is held in place by the locking component 304, keeping the second locking column 302c in a relatively fixed state and unable to move. When the second rotating sleeve 303c rotates, it drives the rotating disk 305a to rotate. The rotating disk 305a, in turn, drives the first locking column 302b to rotate. When 2b rotates, it will cause the spring 302a to contract and store energy. This allows the spring 302a to contract while storing energy. When the spring 302a is contracted, it will reduce the gap between itself and the support column 203, so that the spring 302a presses against the snap-fit ​​assembly 304, pressing the snap-fit ​​assembly 304 into the mounting groove 203a. This releases the restriction on the rotating sleeve 301c, allowing the rotating sleeve 301c to rotate. The energy storage assembly 302 drives the excitation assembly 301 to rotate, causing the excitation assembly 301 to be triggered and impact the vibration assembly 202, generating vibration.

[0065] When the energy stored in the spring 302a is released, the spring 302a expands, allowing the snap-fit ​​assembly 304 to pop out of the mounting slot 203a and remain snapped into the snap-fit ​​slot 301c-1, thus limiting the snap-fit ​​slot 301c-1. This enables repeated automatic energy storage, release, impact, and reset functions, achieving automatic vibration generation without the need for additional power components. It can be installed at any position inside or outside the blade 103, making installation convenient.

[0066] The remaining structure is the same as that in Example 2.

[0067] Example 4, referring to Figures 1-10, is the fourth embodiment of the present invention. This embodiment proposes an anti-icing method applied to the above-mentioned anti-icing device for wind turbine blades, including the following steps:

[0068] Mount the mounting base 201 onto the blade 103 so that the vibration assembly 202 abuts against the blade 103;

[0069] When the blade 103 rotates, the center of gravity of the drive assembly 303 is always downward, causing the drive assembly 303 to rotate relative to the support column 203.

[0070] The excitation component 301 is held in place by the snap-fit ​​component 304, causing the excitation component 301 to move and rotate along with the support column 203, which in turn drives the energy storage component 302 to store energy.

[0071] When the energy storage component 302 stores energy, it undergoes elastic contraction and deformation, causing the energy storage component 302 to press against the snap-fit ​​component 304, causing the snap-fit ​​component 304 to displace and separate from the excitation component 301.

[0072] When the locking component 304 releases its restriction on the excitation component 301, the energy stored in the energy storage component 302 is released through the excitation component 301, enabling the excitation component 301 to rotate.

[0073] When the excitation component 301 rotates, it impacts the vibration component 202, causing the vibration component 202 to vibrate. The vibration is then transmitted to the blade 103, causing the blade 103 to vibrate synchronously, thus achieving the purpose of preventing icing. It can also break up ice blocks when they freeze, making it easier for the ice blocks to fall off.

[0074] When the energy storage component 302 releases energy, it undergoes elastic expansion deformation, causing the snap-fit ​​component 304 to spring up and continue to limit the excitation component 301, so that the energy storage component 302 can continue to store energy.

[0075] Repeat the above steps to achieve automatic vibration triggering, and rely on the gravitational potential energy generated when the blade 103 rotates to automatically perform physical anti-icing operation.

[0076] The present invention can automatically store energy. After the energy storage is completed, it will automatically trigger the impact vibration component 202 to generate impact and vibration, which can break the ice on the blade 103 and the vibration can facilitate the ice to fall off.

[0077] The remaining structure is the same as that in Example 3.

Claims

1. A wind turbine blade anti-icing device for cleaning ice buildup on a wind turbine unit (100), characterized in that: include, The vibration unit (200) includes a mounting base (201) disposed on the fan unit (100), a vibration assembly (202) disposed on the mounting base (201), and a support column (203) disposed on the mounting base (201); and, The excitation unit (300) includes an excitation component (301) rotatably mounted on the support column (203) and abutting against the vibration component (202), a drive component (303) rotatably mounted on the support column (203), an energy storage component (302) rotatably mounted on the support column (203) and connected at both ends to the excitation component (301) and the drive component (303) respectively, and a snap-fit ​​component (304) rotatably mounted on the support column (203) at one end and snap-fitted to the excitation component (301) at the other end.

2. The wind turbine blade anti-icing device according to claim 1, characterized in that: The fan unit (100) includes a support base (101), a rotating seat (102) rotatably mounted on the support base (101), and blades (103) mounted on the rotating seat (102) for mounting the mounting base (201).

3. The wind turbine blade anti-icing device according to claim 2, characterized in that: The vibration assembly (202) includes a connecting seat (202a) that abuts against the blade (103) and engages with the mounting base (201), a vibration spring (202b) with one end disposed on the connecting seat (202a), and a counterweight ball (202c) disposed on the other end of the vibration spring (202b).

4. The wind turbine blade anti-icing device according to claim 3, characterized in that: The excitation assembly (301) includes a rotating sleeve (301c) rotatably mounted on the support column (203) and engaged with the engagement assembly (304), a support rod (301b) with one end mounted on the rotating sleeve (301c), and a hammer (301a) mounted on the other end of the support rod (301b) and abutting against the counterweight ball (202c).

5. The wind turbine blade anti-icing device according to claim 4, characterized in that: The drive assembly (303) includes a rotating sleeve (303c) rotatably mounted on the support column (203), a support rod (303b) with one end mounted on the rotating sleeve (303c), and a counterweight (303a) mounted on the other end of the support rod (303b).

6. The wind turbine blade anti-icing device according to claim 5, characterized in that: The energy storage assembly (302) includes a spring (302a) disposed on the outer periphery of the support column (203) and located between the excitation assembly (301) and the drive assembly (303), a snap-fit ​​post (302c) disposed on one inner end of the spring (302a) and connected to the rotating sleeve (301c), and a snap-fit ​​post (302b) disposed on the other end of the spring (302a) and slidably connected to the rotating sleeve (303c).

7. The wind turbine blade anti-icing device according to claim 6, characterized in that: The support column (203) is provided with a mounting groove (203a) for accommodating the snap-fit ​​assembly (304); the rotating sleeve (301c) is provided with a snap-fit ​​groove (301c-1) for snapping the snap-fit ​​assembly (304); the snap-fit ​​assembly (304) includes a snap-fit ​​strip (304a) with one end disposed in the mounting groove (203a) and the other end protruding from the mounting groove (203a) and snapping with the snap-fit ​​groove (301c-1), an elastic element (304b) disposed in the mounting groove (203a) and abutting against the snap-fit ​​strip (304a), and a pin (304c) disposed on the snap-fit ​​strip (304a) and rotatably connected to the support column (203); the snap-fit ​​strip (304a) is located inside the spring spring (302a) and abuts against it.

8. The wind turbine blade anti-icing device according to claim 7, characterized in that: A connecting component (305) is provided between the energy storage component (302) and the rotating sleeve (303c); the connecting component (305) includes a rotating disk (305a) rotatably mounted on the support column (203) and slidably connected and engaged with the first locking column (302b), two sets of anti-reverse teeth (305b) respectively meshing on the rotating disk (305a), a baffle (305d) mounted on the first locking column (302b), and an elastic element (305c) mounted on the first locking column (302b) and connected at both ends to the baffle (305d) and the rotating disk (305a) respectively.

9. The wind turbine blade anti-icing device according to claim 8, characterized in that: The rotating sleeve (301c) is provided with a slot (301c-2) for embedding the snap-fit ​​post (302c).

10. A method for preventing icing, applied to the anti-icing device for wind turbine blades according to any one of claims 2-9, characterized in that: The method includes the following steps: The mounting base (201) is mounted onto the blade (103) such that the vibration assembly (202) abuts against the blade (103); When the blade (103) rotates, the center of gravity of the drive assembly (303) is always downward, causing the drive assembly (303) to rotate relative to the support column (203); The excitation component (301) is held in place by the snap-fit ​​component (304), causing the excitation component (301) to rotate and move along with the support column (203), so that the energy storage component (302) is driven by the drive component (303) to store energy. When the energy storage component (302) stores energy, it undergoes elastic contraction deformation, causing the energy storage component (302) to squeeze the snap-fit ​​component (304), causing the snap-fit ​​component (304) to displace and separate from the excitation component (301); When the snap-fit ​​component (304) releases its restriction on the excitation component (301), the energy stored in the energy storage component (302) is released through the excitation component (301), allowing the excitation component (301) to rotate. When the excitation component (301) rotates, it impacts the vibration component (202), causing the vibration component (202) to vibrate. The vibration is then transmitted to the blade (103), causing the blade (103) to vibrate synchronously, thus achieving the purpose of preventing icing. It can also break up ice blocks when they freeze, making it easier for the ice blocks to fall off. When the energy storage component (302) releases energy, it undergoes elastic expansion deformation, causing the snap-fit ​​component (304) to spring up and continue to limit the excitation component (301), so that the energy storage component (302) can continue to store energy. Repeat the above steps to achieve automatic vibration triggering, and rely on the gravitational potential energy generated when the blade (103) rotates to automatically perform physical anti-icing operation.

Images