Wind power generation blade and wind turbine generator system

Abstract

The application relates to the technical field of wind power generation, in particular to a wind power generation blade and a wind turbine. The wind power generation blade comprises a blade body and a protection piece, the blade body has a leading edge part, a first surface and a second surface, the first surface and the second surface are respectively located on the opposite sides of the leading edge part, and the first surface and the second surface are both provided with a first clamping part. The protection piece is provided with a second clamping part matched with the first clamping part on both sides, the first clamping part and the second clamping part are correspondingly clamped, and the protection piece covers the leading edge part. The wind power generation blade and the wind turbine provided by the application realize the quick installation of the protection piece, are convenient to operate, and improve the production efficiency.

Description

Technical Field

[0001] This application relates to the field of wind power generation technology, and in particular to a wind power generation blade and a wind power generator set. Background Technology

[0002] Wind turbine blades are crucial components of wind turbine generators, directly capturing wind energy and converting it into mechanical energy to drive the generator. The leading edge of the blade, as the primary wind-cutting point, is susceptible to frictional impacts from rainwater, sand, and dust carried by high-speed airflows; therefore, protection of the leading edge is necessary.

[0003] In existing technologies, highly wear-resistant and corrosion-resistant coatings (such as polyurethane paint or epoxy resin paint) are sprayed onto the leading edge of wind turbine blades. Through multi-layer spraying, a protective layer is formed, which plays a protective role.

[0004] However, spray coating protection is time-consuming and has low production efficiency. Utility Model Content

[0005] This application provides a wind turbine blade and a wind turbine generator set, which enables rapid installation of protective components, is easy to operate, and improves production efficiency.

[0006] In a first aspect, this application provides a wind turbine blade, including a blade body and a protective component. The blade body has a leading edge, a first surface and a second surface, with the first surface and the second surface located on opposite sides of the leading edge. A first snap-fit ​​portion is provided on both the first surface and the second surface.

[0007] Both sides of the protective component are provided with a second snap-fit ​​portion that matches the first snap-fit ​​portion. The first snap-fit ​​portion and the second snap-fit ​​portion snap-fit ​​together, and the protective component covers the front edge.

[0008] In one possible implementation, the wind turbine blade provided in this application has one of the first snap-fit ​​portion and the second snap-fit ​​portion as a snap-fit, and the other as a slot that matches the snap-fit.

[0009] In one possible implementation, the wind turbine blade provided in this application has a first surface and a second surface that are arc-shaped, a first snap-fit ​​portion that is an arc-shaped buckle, and a circular arc transition between the first snap-fit ​​portion and the corresponding first surface or second surface.

[0010] In one possible implementation, the wind turbine blade provided in this application includes a first protective part and a second protective part connected to the first protective part.

[0011] Both the first and second protective sections are provided with a second snap-fit ​​section, and the first and second protective sections together cover the leading edge.

[0012] In one possible implementation, the wind turbine blade provided in this application has a first protective part that is arc-shaped. The first protective part is configured such that when a second engaging part on the first protective part engages with a first engaging part on a first surface, the first protective part covers the corresponding first engaging part, and the first protective part and the first surface are connected by an arc transition.

[0013] And / or, the second protective part is arc-shaped, and the second protective part is configured such that when the second snap-fit ​​part on the second protective part snaps into the first snap-fit ​​part on the second surface, the second protective part covers the corresponding first snap-fit ​​part, and the second protective part and the second surface are transitioned by an arc.

[0014] In one possible implementation, the wind turbine blade provided in this application has a leading edge that is an arc surface or curve, and the first protective part and the second protective part are connected by an arc transition.

[0015] In one possible implementation, the wind turbine blade provided in this application has a first snap-fit ​​portion extending along the length direction of the blade body.

[0016] In one possible implementation, the wind turbine blade provided in this application has a protective component integrally formed, and the edge of the protective component is flush with the edge of the first snap-fit ​​portion.

[0017] In one possible implementation, the wind turbine blade provided in this application has at least two protective components, which are arranged sequentially along the extension direction of the first snap-fit ​​portion, and adjacent protective components abut against each other.

[0018] Secondly, this application also provides a wind turbine generator set, including any of the wind turbine blades provided in the first aspect above.

[0019] The wind turbine blade and wind turbine generator set provided in this application include a blade body and a protective component. The blade body has a leading edge, a first surface, and a second surface, located on opposite sides of the leading edge. Each of the first and second surfaces has a first engaging portion. The protective component has second engaging portions on both sides that match the first engaging portions. The first and second engaging portions engage with each other, and the protective component covers the leading edge. This rapid engagement of the first and second engaging portions enables quick installation of the protective component, facilitating operation and improving production efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a wind turbine blade provided in an embodiment of this application;

[0022] Figure 2 for Figure 1 Schematic diagram of the structure of the middle blade body;

[0023] Figure 3 for Figure 1 A schematic diagram of the structure of the protective component.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100 - Blade body; 101 - First locking part;

[0026] 110 - Leading edge;

[0027] 120 - First surface;

[0028] 130 - Second surface;

[0029] 140 - Rear edge;

[0030] 200 - Protective component; 201 - Second snap-fit ​​part;

[0031] 210-First Protection Section;

[0032] 220 - Second Protection Department.

[0033] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0034] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0035] Secondly, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] Furthermore, it should be noted that in the description of this application, the terms "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0038] As shown in the background section, in the prior art, a highly wear-resistant and corrosion-resistant coating (such as polyurethane paint or epoxy resin paint) is sprayed onto the leading edge of the wind turbine blade. Through multiple layers of spraying, a protective layer is formed, which plays a protective role.

[0039] However, the protective method of spray coating requires cleaning the leading edge first in order to ensure the adhesion and anti-corrosion effect of the coating. The process is complicated, and each layer of coating needs to be surface dry (touch dry) or hard dry (completely cured) after spraying. This results in a long time consumption and low production efficiency for multi-layer spraying.

[0040] Based on this, the wind turbine blade and wind turbine generator provided in this application, wherein the wind turbine blade comprises a blade body and a protective component, the blade body having a leading edge, a first surface, and a second surface, the first surface and the second surface being located on opposite sides of the leading edge, and both the first surface and the second surface having a first snap-fit ​​portion. The protective component has a second snap-fit ​​portion on both sides that matches the first snap-fit ​​portion. The first snap-fit ​​portion and the second snap-fit ​​portion snap-fit ​​together, and the protective component covers the leading edge. Thus, the rapid snap-fit ​​between the first snap-fit ​​portion and the second snap-fit ​​portion enables quick installation of the protective component, facilitating operation and improving production efficiency.

[0041] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0042] Reference Figure 1 , Figure 2 and Figure 3 As shown, the wind turbine blade provided in this application includes a blade body 100 and a protective component 200. The blade body 100 has a leading edge 110, a first surface 120 and a second surface 130. The first surface 120 and the second surface 130 are located on opposite sides of the leading edge 110, and a first snap-fit ​​portion 101 is provided on both the first surface 120 and the second surface 130.

[0043] The protective member 200 has a second snap-fit ​​portion 201 on both sides that matches the first snap-fit ​​portion 101. The first snap-fit ​​portion 101 and the second snap-fit ​​portion 201 are snapped together, and the protective member 200 covers the front edge portion 110.

[0044] It should be noted that the blade body 100 is the main structure of the wind turbine blade, and the leading edge 110 is the front end region of the blade body 100, which directly bears the impact of wind, raindrops, particles, etc. The first surface 120 and the second surface 130 are the two side surfaces of the blade body 100, located on opposite sides of the leading edge 110. In a specific implementation, the blade body 100 also includes a trailing edge 140, which is located on opposite sides of the first surface 120 (or the second surface 130) along with the leading edge 110.

[0045] For example, the first surface 120 may be a suction surface and the second surface 130 may be a pressure surface.

[0046] The protective component 200 is a protective structure covering the leading edge 110 of the blade body 100. It is fixed to the blade body 100 by snap-fit ​​and is used to resist environmental erosion. For example, the protective component 200 may be an arc-shaped module prefabricated using weather-resistant materials such as polyurethane, and its shape is consistent with the leading edge 110 of the blade body 100.

[0047] By providing a first snap-fit ​​portion 101 on the first surface 120 and the second surface 130 of the blade body 100, and providing a second snap-fit ​​portion 201 on both sides of the protective member 200, the second snap-fit ​​portion 201 on one side of the protective member 200 snaps into the first snap-fit ​​portion 101 on the first surface 120, and the second snap-fit ​​portion 201 on the other side of the protective member 200 snaps into the first snap-fit ​​portion 101 on the second surface 130. This allows for quick snap-fit ​​between the first snap-fit ​​portion 101 and the second snap-fit ​​portion 201, enabling rapid installation of the protective member 200, facilitating operation, and improving production efficiency.

[0048] For example, the first snap-fit ​​portion 101 may be a snap-fit ​​(or a snap-fit ​​slot), and the second snap-fit ​​portion 201 may be a snap-fit ​​(or a snap-fit ​​slot). The specific form is designed according to the installation requirements, and the embodiments of this application do not impose too many restrictions on this.

[0049] Understandably, since the first surface 120 and the second surface 130 are located on opposite sides of the leading edge 110, the two sides of the protective member 200 are respectively engaged with the first engaging portion 101 of the first surface 120 and the second surface 130, so that the protective member 200 can cover the leading edge 110 and achieve a better protective effect.

[0050] In some embodiments, refer to Figure 2 and Figure 3 As shown, one of the first snap-fit ​​portion 101 and the second snap-fit ​​portion 201 is a snap fastener, and the other is a snap slot that matches the snap fastener.

[0051] In practical implementation, the first latching part 101 can be a buckle (see reference). Figure 2 As shown), the second latching part 201 is a latching groove that matches the buckle (see reference). Figure 3 (As shown in the figure); the second snap-fit ​​portion 201 can also be a buckle (not shown in the figure), and the first snap-fit ​​portion 101 is a slot that matches the buckle (not shown in the figure). This application embodiment does not impose too many restrictions on this.

[0052] Specifically, after the buckle is inserted into the slot, a tight connection is formed by matching the shape of the buckle and the slot, which realizes the rapid installation and stable connection between the protective component 200 and the blade body 100, improves production efficiency, and ensures the stability of the protective component 200 when the wind turbine blade rotates at high speed.

[0053] In some embodiments, magnetic materials can be embedded in the buckle or slot to enhance the fixing effect of the buckle and slot through the magnetic attraction of the magnetic materials.

[0054] In some embodiments, refer to Figure 2As shown, the first surface 120 and the second surface 130 are curved surfaces, the first snap-fit ​​part 101 is an arc-shaped buckle, and the first snap-fit ​​part 101 and the corresponding first surface 120 or second surface 130 are connected by an arc transition.

[0055] In a specific implementation, the arc-shaped latch can be a protruding structure designed along the curvature of the first surface 120 (or the second surface 130) of the blade body 100. The shape of the arc-shaped latch on the first surface 120 is consistent with the shape of the first surface 120, and the shape of the arc-shaped latch on the second surface 130 is consistent with the shape of the second surface 130. The height of the arc-shaped latch gradually increases in the direction toward the leading edge 110, and the height of the end of the arc-shaped latch near the leading edge 110 can be 5mm or 4mm. On the one hand, the height change of the arc-shaped latch is small, thus having a small impact on aerodynamic performance. On the other hand, the gradually increasing height of the arc-shaped latch can avoid abrupt height changes, further reducing the impact on the aerodynamic performance of the wind turbine blade and ensuring power generation efficiency. Exemplarily, the arc-shaped latch can be fixed to the first surface 120 and the second surface 130 by adhesive bonding, or it can be fixed by other means; this application embodiment does not impose too many restrictions on this.

[0056] It should be noted that the existing protective method of spraying coatings is prone to uneven coating thickness, which in turn affects the aerodynamic shape of the blades and reduces the efficiency of the wind turbine.

[0057] The wind turbine blade provided in this application embodiment has an arc transition between the first snap-fit ​​portion 101 and the corresponding first surface 120 or second surface 130. Specifically, the arc-shaped buckle on the first surface 120 transitions with the first surface 120 through a smooth curve, and the arc-shaped buckle on the second surface 130 transitions with the second surface 130 through a smooth curve.

[0058] With this configuration, the shape of the arc-shaped buckle is consistent with the arc shape of the first surface 120 or the second surface 130 of the blade body 100, and it is seamlessly connected to the first surface 120 or the second surface 130 through a circular arc transition. This can optimize the flow of air on the surface of the blade body 100, avoid the aerodynamic performance degradation caused by structural abrupt changes, and ensure the aerodynamic efficiency of the wind turbine blade.

[0059] In some embodiments, refer to Figure 2 and Figure 3 As shown, the protective component 200 includes a first protective part 210 and a second protective part 220 connected to the first protective part 210.

[0060] A second snap-fit ​​portion 201 is provided on both the first protective portion 210 and the second protective portion 220, and the first protective portion 210 and the second protective portion 220 together cover the leading edge portion 110.

[0061] Specifically, the second engaging portion 201 on the first protective portion 210 engages with the first engaging portion 101 on the first surface 120, and the second engaging portion 201 on the second protective portion 220 engages with the first engaging portion 101 on the second surface 130, thereby achieving the connection between the first protective portion 210 and the second protective portion 220 and the blade body 100. Since the first surface 120 and the second surface 130 are located on opposite sides of the leading edge portion 110, the first protective portion 210 and the second protective portion 220 together cover the leading edge portion 110 of the blade body 100. Exemplarily, the first protective portion 210 and the second protective portion 220 are integrally formed.

[0062] With this configuration, the first protective part 210 and the second protective part 220 work together to provide comprehensive protection for the leading edge 110 of the blade body 100, achieving a good protective effect.

[0063] In some embodiments, refer to Figure 1 , Figure 2 and Figure 3 As shown, the first protective part 210 is arc-shaped. The first protective part 210 is configured such that when the second snap-fit ​​part 201 on the first protective part 210 snaps with the first snap-fit ​​part 101 on the first surface 120, the first protective part 210 covers the corresponding first snap-fit ​​part 101, and the first protective part 210 and the first surface 120 are connected by an arc.

[0064] And / or, the second protective part 220 is arc-shaped, and the second protective part 220 is configured such that when the second snap-fit ​​part 201 on the second protective part 220 snaps with the first snap-fit ​​part 101 on the second surface 130, the second protective part 220 covers the corresponding first snap-fit ​​part 101, and the second protective part 220 and the second surface 130 are transitioned by an arc.

[0065] In a specific implementation, the shape of the arc-shaped first protective part 210 is consistent with the shape of the first snap-fit ​​part 101 on the first surface 120, and the shape of the arc-shaped second protective part 220 is consistent with the shape of the first snap-fit ​​part 101 on the second surface 130.

[0066] It should be noted that the first protective part 210 is engaged with the first engaging part 101 of the first surface 120 via the second engaging part 201. The arc-shaped structure of the first protective part 210 fits tightly with the first engaging part 101 of the first surface 120, ensuring connection stability and preventing the protective part 200 from shaking. The first protective part 210 covers the first engaging part 101 on the first surface 120, preventing high-speed winds from directly blowing onto the locking opening of the first engaging part 101, reducing the risk of the protective part 200 falling off. Furthermore, the arc transition between the first protective part 210 and the first surface 120 optimizes the airflow disturbance to the first surface 120, preventing a decrease in aerodynamic performance due to abrupt structural changes.

[0067] The second protective part 220 engages with the first engaging part 101 of the second surface 130 via the second engaging part 201. The arc-shaped structure of the second protective part 220 fits tightly with the first engaging part 101 of the second surface 130, ensuring connection stability and preventing the protective part 200 from shaking. The second protective part 220 covers the first engaging part 101 on the second surface 130, preventing high-speed winds from directly blowing onto the locking mechanism of the first engaging part 101, reducing the risk of the protective part 200 falling off. Furthermore, the arc transition between the second protective part 220 and the second surface 130 optimizes airflow disturbance to the second surface 130, preventing a decrease in aerodynamic performance due to abrupt structural changes.

[0068] This configuration, with the arc-shaped first protective part 210 transitioning to the first surface 120 and the arc-shaped second protective part 220 transitioning to the second surface 130, achieves a seamless connection between the protective component 200 and the blade body 100. This reduces stress concentration during installation and optimizes airflow disturbance on the surface of the blade body 100, improving the aerodynamic efficiency and structural stability of the wind turbine blade.

[0069] In some embodiments, refer to Figure 2 and Figure 3 As shown, the leading edge 110 is a circular arc surface or arc, and the first protective part 210 and the second protective part 220 are connected by a circular arc.

[0070] It should be noted that the first protective part 210 and the second protective part 220 are connected by an arc, that is, the first protective part 210 and the second protective part 220 are smoothly connected. The arc transition between the first protective part 210 and the second protective part 220 ensures that the shape of the protective member 200 is consistent with the arc surface or arc shape of the leading edge part 110, and reduces the abrupt connection between the first protective part 210 and the second protective part 220, avoiding airflow separation or vortex due to structural abrupt changes, and maintaining the streamlined design of the leading edge part 110.

[0071] This configuration achieves a smooth connection between the first protection section 210 and the second protection section 220, reducing airflow disturbance and optimizing aerodynamic performance. Simultaneously, it reduces stress concentration between the first protection section 210 and the second protection section 220, improving the structural stability of the protective component 200 and adapting to the dynamic load requirements of wind turbine blades during high-speed rotation.

[0072] In some embodiments, refer to Figure 2 As shown, the first snap-fit ​​portion 101 extends along the length direction of the blade body 100.

[0073] This design reduces alignment difficulty during the installation of the protective component 200. The protective component 200 can be quickly pushed in along the length of the blade body 100, ensuring proper installation and improving efficiency. Furthermore, the second locking portion 201 of the protective component 200 can engage with the first locking portion 101 along the length of the blade body 100, increasing the contact area between them and improving the reliability of their connection.

[0074] In a practical implementation, the first engagement portion 101 can extend from the tip of the wind turbine blade to a position 70% of the distance from the blade root. The first engagement portion 101 can be installed at 20% of the chord length of the blade body 100. It should be noted that the straight line from the leading edge portion 110 to the trailing edge portion 140 is the chord line, and the length of the chord line is the chord length.

[0075] In some embodiments, refer to Figure 1 and Figure 2 As shown, the protective component 200 is integrally formed, and the edge of the protective component 200 is flush with the edge of the first snap-fit ​​portion 101.

[0076] It should be noted that the integrally formed protective component 200 extends along the extension direction of the first snap-fit ​​portion 101 (i.e., the length direction of the blade body 100), and its edge is flush with the edge of the first snap-fit ​​portion 101, which can better cover the leading edge portion 110 and achieve a better protective effect.

[0077] For example, the protective element 200 can be a polyurethane protective element 200 formed by injection molding.

[0078] In some embodiments, refer to Figure 1 , Figure 2 and Figure 3 As shown, the number of protective members 200 is at least two, and at least two protective members 200 are arranged sequentially along the extension direction of the first snap-fit ​​portion 101, and two adjacent protective members 200 abut against each other.

[0079] For example, the number of protective elements 200 can be two, three or more, and this application embodiment does not impose too many restrictions on this.

[0080] It should be noted that at least two protective elements 200 are arranged sequentially along the extension direction of the first snap-fit ​​portion 101, that is, sequentially along the length direction of the blade body 100. Two adjacent protective elements 200 abut against each other to ensure that there are no gaps between the two adjacent protective elements 200, thereby ensuring good coverage of the leading edge portion 110 of the blade and preventing airflow separation or particulate matter intrusion caused by gaps.

[0081] This design achieves coverage of the leading edge 110, reduces airflow disturbance, and improves resistance to particulate impact. Furthermore, the modular design allows for independent replacement of damaged protective components 200, reducing maintenance costs.

[0082] This application also provides a wind turbine generator set, including wind turbine blades.

[0083] It should be noted that, in addition to the wind turbine blades, a wind turbine generator set also includes a rotor system, nacelle system, tower system, foundation system, and control and auxiliary systems. These components work together to achieve wind energy capture, energy conversion, and stable grid connection. Wind turbine generator sets are a technology well-known to those skilled in the art and will not be described in detail here.

[0084] The specific structure and operation of the wind turbine blades have been described in detail in the above embodiments, and will not be repeated here.

[0085] Those skilled in the art will understand that the wind turbine blade and wind turbine generator set provided in this application, wherein the wind turbine blade comprises a blade body 100 and a protective member 200, the blade body 100 having a leading edge 110, a first surface 120 and a second surface 130, the first surface 120 and the second surface 130 being located on opposite sides of the leading edge 110, and both the first surface 120 and the second surface 130 being provided with a first engaging portion 101. The protective member 200 has a second engaging portion 201 on both sides that matches the first engaging portion 101. The first engaging portion 101 and the second engaging portion 201 engage correspondingly, and the protective member 200 covers the leading edge 110. Thus, the rapid engagement of the first engaging portion 101 and the second engaging portion 201 enables the rapid installation of the protective member 200, facilitating operation and improving production efficiency.

[0086] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0087] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0088] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A wind turbine blade, characterized in that, include: The blade body (100) has a leading edge (110), a first surface (120) and a second surface (130), the first surface (120) and the second surface (130) being located on opposite sides of the leading edge (110), and a first snap-fit ​​portion (101) being provided on both the first surface (120) and the second surface (130). The protective member (200) has a second snap-fit ​​portion (201) on both sides that matches the first snap-fit ​​portion (101). The first snap-fit ​​portion (101) and the second snap-fit ​​portion (201) are snap-fitted together. The protective member (200) covers the front edge portion (110).

2. The wind turbine blade according to claim 1, characterized in that, One of the first snap-fit ​​portion (101) and the second snap-fit ​​portion (201) is a snap fastener, and the other is a slot that matches the snap fastener.

3. The wind turbine blade according to claim 2, characterized in that, The first surface (120) and the second surface (130) are curved surfaces, the first snap-fit ​​part (101) is an arc-shaped buckle, and the first snap-fit ​​part (101) and the corresponding first surface (120) or second surface (130) are connected by an arc transition.

4. The wind turbine blade according to claim 1, characterized in that, The protective element (200) includes a first protective part (210) and a second protective part (220) connected to the first protective part (210). The first protective part (210) and the second protective part (220) are each provided with a second snap-fit ​​part (201), and the first protective part (210) and the second protective part (220) together cover the leading edge part (110).

5. The wind turbine blade according to claim 4, characterized in that, The first protective part (210) is arc-shaped. The first protective part (210) is configured such that when the second snap-fit ​​part (201) on the first protective part (210) snaps with the first snap-fit ​​part (101) on the first surface (120), the first protective part (210) covers the corresponding first snap-fit ​​part (101), and the first protective part (210) and the first surface (120) are connected by an arc. And / or, the second protective part (220) is arc-shaped, and the second protective part (220) is configured such that when the second snap-fit ​​part (201) on the second protective part (220) snaps with the first snap-fit ​​part (101) on the second surface (130), the second protective part (220) covers the corresponding first snap-fit ​​part (101), and the second protective part (220) and the second surface (130) are transitioned by an arc.

6. The wind turbine blade according to claim 5, characterized in that, The leading edge (110) is a circular arc surface or arc, and the first protective part (210) and the second protective part (220) are connected by a circular arc transition.

7. The wind turbine blade according to any one of claims 1 to 6, characterized in that, The first snap-fit ​​portion (101) extends along the length direction of the blade body (100).

8. The wind turbine blade according to claim 7, characterized in that, The protective component (200) is integrally formed, and the edge of the protective component (200) is flush with the edge of the first snap-fit ​​portion (101).

9. The wind turbine blade according to claim 7, characterized in that, The number of the protective members (200) is at least two, and the at least two protective members (200) are arranged sequentially along the extension direction of the first snap-fit ​​portion (101), and the two adjacent protective members (200) abut against each other.

10. A wind turbine generator set, characterized in that it includes wind turbine blades as described in any one of claims 1 to 9.

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