Wind turbine blade protection device and wind power generation equipment

Abstract

The present invention discloses a wind turbine blade protection device and a wind power generation equipment, and relates to the technical field of wind turbine blade leading edge protection devices, wherein the wind turbine blade protection device comprises a protective film and a micro-vortex generator, wherein the protective film extends along the length direction of the wind turbine blade, and the protective film covers the leading edge section of the blade; and the micro-vortex generator is arranged on the suction surface corresponding to the position of the protective film. The present invention arranges a micro-vortex generator on the leading edge section of the wind turbine blade, thereby increasing power and reducing drag, and delaying separation of the wind turbine blade, causing less interference to the surface of the wind turbine blade, and better maintaining the smoothness of the aerodynamic shape. The micro-vortex generator can suppress the generation of large-scale vortices, thereby reducing the possibility of vortex vibration, and improving the aerodynamic stability of the wind turbine blade. In addition, the micro-vortex generator can also eliminate the adverse effects of the leading edge protective film step on the wind turbine blade, thereby improving the overall performance and efficiency of the wind turbine generator set.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbine blade leading edge protection devices, and in particular to a wind turbine blade protection device and a wind power generation device. Background Art

[0002] Wind power generation technology is developing towards large-scale and offshore operation. However, the harsh operating environment in the deep sea and the increase in the linear speed of the wind turbine blades have significantly increased the risk of blade leading edge damage. Blade leading edge damage will not only destroy the aerodynamic shape of the blade and reduce blade performance, but also have an adverse effect on the operating efficiency of the wind turbine.

[0003] At present, the wind power industry usually uses leading edge protection films or coatings to solve the problem of blade leading edge corrosion. By covering the leading edge surface of the blade with a layer of protective material, a physical barrier is formed to resist erosion and damage to the leading edge of the blade caused by environmental factors.

[0004] However, during the installation of the leading edge protective film or coating, the surface of the wind turbine blades may be uneven, with bubbles or uneven edges, which may affect the aerodynamic shape of the wind turbine blades and reduce the efficiency of the wind turbine generator set. Summary of the invention

[0005] The main purpose of the present invention is to provide a wind turbine blade protection device and a wind power generation equipment, aiming to solve the technical problem in the prior art that the leading edge protective film or coating of the wind turbine blade will reduce the efficiency of the wind turbine generator set.

[0006] To achieve the above-mentioned purpose, the present invention provides a wind turbine blade protection device, wherein the wind turbine blade comprises a pressure surface and a suction surface, wherein a blade leading edge section is formed at a transitional connection between the pressure surface and the suction surface;

[0007] The wind turbine blade protection device comprises:

[0008] A protective film, the protective film extending along the length direction of the wind turbine blade, the protective film covering the leading edge section of the blade;

[0009] A micro vortex generator is arranged on the suction surface corresponding to the position of the protective film.

[0010] In one embodiment, the protective film and the micro vortex generator are synchronously installed on the wind turbine blade, with the spanwise position being 70% to the blade tip, the chordwise position being 20% ​​of the preset airfoil chord length, and the micro vortex generator is arranged at the edge of the protective film on one side of the suction surface.

[0011] In one embodiment, the micro vortex generator and the protective film form a modular component.

[0012] In one embodiment, there are multiple micro vortex generators, and the multiple micro vortex generators are arranged at intervals along the length direction of the wind turbine blade.

[0013] In one embodiment, the micro vortex generator has a sloped structure, and the orthographic projection of the micro vortex generator on the suction surface has a triangular structure.

[0014] In one embodiment, the triangular structure includes a base and two waist sides, the length of the base is W, the distance between the vertex opposite to the base and the base is C, the angle between the bisector of the vertex opposite to the base and one of the waist sides is α, the height of the micro vortex generator is H, the distance between two adjacent micro vortex generators is S, and the boundary layer displacement thickness of the wind turbine blade is δ; wherein S=5*W, W=0.73*δ, C=1.64*δ, H=0.4*δ, α=24°.

[0015] In one embodiment, the ratio of the height of the micro vortex generator to the boundary layer displacement thickness of the wind turbine blade is r, and r≤0.5.

[0016] In one embodiment, the protective film and the micro vortex generators are both sealed and connected to the surface of the wind turbine blade.

[0017] The present invention also provides a wind power generation equipment, which uses the wind turbine blade protection device as described above.

[0018] The technical solution of the present invention is to set a micro vortex generator at the leading edge of the wind turbine blade, which can increase power and reduce drag, delay separation, and lessen the interference to the surface of the wind turbine blade, so as to better maintain the smoothness of the aerodynamic shape. The micro vortex generator can suppress the generation of large-scale vortices, thereby reducing the possibility of vortex vibration and improving the aerodynamic stability of the wind turbine blade. In addition, the micro vortex generator can also eliminate the adverse effects of the leading edge protective film step on the shape of the wind turbine blade, reduce the airflow separation phenomenon, and further optimize the aerodynamic performance of the wind turbine blade, thereby improving the overall performance and efficiency of the wind turbine generator set. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 A schematic structural diagram of an embodiment of a wind turbine blade protection device provided by the present invention;

[0021] Figure 2 for Figure 1 An enlarged structural schematic diagram of an embodiment of the protective film and the micro vortex generator;

[0022] Figure 3 A schematic structural diagram of an embodiment of a micro vortex generator provided by the present invention;

[0023] Figure 4 for Figure 3 A schematic diagram of a projection structure of the micro vortex generator projected onto the wind turbine blade;

[0024] Figure 5 A schematic structural diagram of an embodiment of a cylindrical micro vortex generator provided by the present invention;

[0025] Figure 6 A schematic structural diagram of an embodiment of a clam-type micro vortex generator provided by the present invention;

[0026] Figure 7 A schematic structural diagram of an embodiment of a wishbone type micro vortex generator provided by the present invention;

[0027] Figure 8 A schematic structural diagram of an embodiment of a double-layer micro vortex generator provided by the present invention;

[0028] Fig. 9 A schematic structural diagram of an embodiment of a blade-type micro vortex generator provided by the present invention;

[0029] Fig.10 This is a schematic structural diagram of another embodiment of the blade-type micro vortex generator provided by the present invention.

[0030] Description of Figure Numbers:

[0031] 10. Wind turbine blade; 11. Suction surface; 12. Blade leading edge;

[0032] 100. Protective film; 200. Micro vortex generator; 210. Triangular structure.

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] At present, the wind power industry usually uses leading edge protection films or coatings to solve the problem of blade leading edge corrosion. By covering the leading edge surface of the blade with a layer of protective material, a physical barrier is formed to resist erosion and damage to the leading edge of the blade caused by environmental factors.

[0038] However, during the installation of the leading edge protective film or coating, the surface of the wind turbine blades may be uneven, with bubbles or uneven edges, which may affect the aerodynamic shape of the wind turbine blades and reduce the efficiency of the wind turbine generator set.

[0039] In order to solve the technical problem, the present invention provides a wind turbine blade protection device and a wind power generation equipment.

[0040] See also Figures 1 to 3In one embodiment of the present invention, a wind turbine blade 10 includes a pressure surface and a suction surface 11, and a blade leading edge section 12 is formed at the transition connection between the pressure surface and the suction surface 11. The protection device of the wind turbine blade includes a protective film 100 and a micro vortex generator 200. The protective film 100 extends along the length direction of the wind turbine blade 10, and the protective film 100 covers the blade leading edge section 12; the micro vortex generator 200 is arranged on the suction surface 11 corresponding to the position of the protective film 100.

[0041] It should be noted that the protective film 100 is a prefabricated film, and the micro vortex generator 200 is used to eliminate the step-shaped edge formed by the protective film 100 of the blade leading edge section 12 protruding outward compared to the surface of the wind turbine blade 10 .

[0042] Specifically, the wind turbine blade 10 includes a pressure surface and a suction surface 11 that are arranged opposite to each other. The pressure surface and the suction surface 11 are transitionally connected in the leading edge area of ​​the wind turbine blade 10 to form a blade leading edge section 12. The wind turbine blade 10 protection device of this embodiment includes two main parts: a protective film 100 and a micro vortex generator 200. Among them, the protective film 100 extends along the length direction of the wind turbine blade 10, covers the surface of the blade leading edge section 12, and forms a physical barrier to resist erosion and damage to the leading edge of the blade caused by environmental factors. At the same time, the micro vortex generator 200 is arranged on the suction surface 11 corresponding to the position of the protective film 100, which is used to control the flow state of the boundary layer, suppress flow separation, and improve the aerodynamic performance of the wind turbine blade 10.

[0043] More specifically, during installation, the protective film 100 and the micro-vortex generator 200 are fixed to the surface of the wind turbine blade 10 using acrylic glue and modified silane sealing adhesive to ensure that the protective film 100 is tightly covered with the leading edge section 12 of the blade to avoid defects such as bubbles or uneven edges. The protective film 100 can be made of a flexible material to adapt to the curved surface shape of the leading edge section 12 of the blade to achieve full contact with the surface of the wind turbine blade 10. An array of micro-vortex generators 200 is arranged in the edge area of ​​the protective film 100 on the suction surface 11. The protective film 100 and the micro-vortex generator 200 are combined together to achieve the dual goals of aerodynamic optimization and durability improvement through synergy. Protection and performance compatibility: The impact resistance and corrosion resistance of the protective film 100 extend the life of the entire device, especially in rain, high humidity or dusty environments. The installation of the micro-vortex generator 200 not only eliminates the aerodynamic loss problem caused by the step of the protective film 100, but also effectively improves the aerodynamic performance of the blade by increasing the boundary layer energy.

[0044] In the technical solution provided by the present invention, by setting a micro vortex generator 200 at the leading edge section 12 of the wind turbine blade 10, while increasing power and reducing drag and delaying separation of the wind turbine blade, the interference to the surface of the wind turbine blade 10 is smaller, and the smoothness of the aerodynamic shape can be better maintained. The micro vortex generator 200 can suppress the generation of large-scale vortices, thereby reducing the possibility of vortex vibration and improving the aerodynamic stability of the wind turbine blade 10. In addition, the micro vortex generator 200 can also eliminate the adverse effects of the leading edge protective film 100 step on the shape of the wind turbine blade 10, reduce the airflow separation phenomenon, and further optimize the aerodynamic performance of the wind turbine blade 10, thereby improving the overall performance and efficiency of the wind turbine generator set.

[0045] As an alternative implementation, see Figures 5 to 10 The micro vortex generator 200 is a cylindrical micro vortex generator 200 , a clam-type micro vortex generator 200 , a wishbone-type micro vortex generator 200 , a double-layer micro vortex generator 200 or a blade-type micro vortex generator 200 .

[0046] Specifically, Figure 5 and Figure 6 In the figure, the cylindrical micro vortex generator 200 or the clam-shaped micro vortex generator 200 has a cross-sectional shape of a semi-cylinder or a clam shell, and a smooth and rounded surface. Its bottom smoothly transitions with the surface of the wind turbine blade 10, and its top is higher than the blade surface. It is arranged along the chord direction of the wind turbine blade 10, and its length direction is parallel to the incoming flow direction.

[0047] Figure 7 In the figure, the fork-bone type micro vortex generator 200 is formed by symmetrically combining two slope type vortex generators, and is shaped like a fork-bone or a herringbone. The leading edges of the two slopes intersect, and the trailing edges separate to form an angle. They are arranged along the chord direction of the wind turbine blade 10, and the symmetry axis is parallel to the incoming flow direction.

[0048] Figure 8 In the figure, the double-layer micro vortex generator 200 is composed of two blade-type vortex generators stacked up and down to form a double-layer structure. The chord length of the upper blade is slightly shorter than that of the lower blade, and the leading edges of the two are aligned. They are arranged along the chord direction of the blades, and the length direction forms a certain angle with the incoming flow direction.

[0049] Fig. 9 and Fig.10 In the figure, the blade-type micro vortex generator 200 has an airfoil-shaped cross-section, similar to a miniature blade or wing. Its leading edge and trailing edge are smoothly transitioned with the surface of the wind turbine blade 10, and the middle part is higher than the blade surface. It is arranged along the chord direction of the wind turbine blade 10, and the length direction forms a certain angle with the incoming flow direction.

[0050] In an embodiment of the present invention, the protective film 100 and the micro vortex generator 200 are synchronously installed on the wind turbine blade 10, with the spanwise position being 70% to the blade tip, the chordwise position being 20% ​​of the current airfoil chord length, and the micro vortex generator 200 is arranged at the edge of the protective film 100 on one side of the suction surface 11.

[0051] It should be noted that the current airfoil refers to the cross-sectional airfoil of the wind turbine blade 10 where the protective film 100 and the micro vortex generator 200 are located.

[0052] The specific installation position of the protective film 100 is from the position of 20% of the chord length of the suction surface 11 of the wind turbine blade 10, through the blade leading edge section 12 of the wind turbine blade 10 to the position of 20% of the chord length of the pressure surface of the wind turbine blade 10. The micro vortex generator 200 is modularly manufactured at the edge of the protective film 100 located on the suction surface, that is, the blade leading edge section 12, and the protective film 100 is located at any position between 70% of the span direction of the wind turbine blade 10 and the blade tip and extends along the span direction of the wind turbine blade 10.

[0053] Specifically, the spanwise position refers to any position in the direction from the root of the wind turbine blade 10 to the tip of the blade. The chordwise position refers to the position along the chord line of the airfoil of the wind turbine blade 10. In this embodiment, the chordwise position of the micro vortex generator 200 is set to 20% of the current airfoil chord length. The airflow transition zone on the suction surface 11. By setting the micro vortex generator 200 at this position, the transition process of the airflow can be effectively controlled, the attachment of the airflow can be maintained, and the aerodynamic efficiency of the blade can be improved.

[0054] More specifically, the installation position of the protective film 100 spans the pressure side and the suction side 11 of the wind turbine blade 10. Specifically, it starts from the 20% chord length position of the suction side 11, passes through the blade leading edge section 12, and extends to the 20% chord length position of the pressure side, which can protect the blade leading edge section 12 from environmental erosion to the greatest extent, while also avoiding excessive interference with the blade's aerodynamic shape.

[0055] In the embodiment of the present invention, the micro vortex generator 200 and the protective film 100 form a modular assembly.

[0056] Specifically, the micro vortex generator 200 and the protective film 100 are tightly combined through an interface. The protective film 100 is preset with an interface or a fixing point matching the micro vortex generator 200 during manufacturing. During the installation process of the wind turbine blade 10, the micro vortex generator 200 can be quickly and accurately positioned and installed on the protective film 100.

[0057] In addition, since the micro vortex generator 200 and the protective film 100 are pre-integrated modular units, the replacement and maintenance of the whole are also more convenient. When the wind turbine blade 10 needs maintenance or replacement of the micro vortex generator 200, the staff only needs to replace the entire modular assembly without disassembling and installing the protective film 100 and the vortex generator 200 one by one, which significantly improves the maintenance efficiency and reduces the labor intensity.

[0058] By integrating the micro vortex generator 200 and the protective film 100 into a modular component, not only the assembly and maintenance process of the micro vortex generator 200, the protective film 100 and the wind turbine blade 10 is simplified, but also the stability and durability of the micro vortex generator 200 and the protective film 100 in harsh environments are enhanced. The modular structure reduces the joint portion between the micro vortex generator 200 and the protective film 100, thereby reducing the risk of functional failure caused by loose or damaged interfaces.

[0059] More specifically, in the aforementioned embodiment, the micro vortex generator 200 is installed on the surface of the wind turbine blade 10 independently of the protective film 100. Although this arrangement can bring into play the respective functions of the micro vortex generator 200 and the protective film 100, in actual applications, the independent installation of the micro vortex generator 200 and the protective film 100 may result in a small gap between the two, affecting the continuity of the airflow flow. In addition, during the long-term operation of the wind turbine blade 10, the micro vortex generator 200 may be displaced or fall off, thereby affecting its drag reduction and efficiency performance. Therefore, in this embodiment, the micro vortex generator 200 and the protective film 100 are integrally formed and formed into a modular component by mold forming, 3D printing, etc. It can ensure that the micro vortex generator 200 is embedded in the preset position of the protective film 100 to form a seamless overall structure. The embedded micro vortex generator 200 can achieve a smooth transition with the surface of the protective film 100, reduce airflow disturbances, and further improve the aerodynamic efficiency of the wind turbine blade 10.

[0060] In addition, the integrated formation of the micro-vortex generator 200 and the protective film 100 also simplifies the installation process of the wind turbine blade 10. In practical applications, it is only necessary to cover the protective film 100 with the integrated micro-vortex generator 200 on the surface of the wind turbine blade 10 and fit it by bonding or mechanical fixing to complete the installation of the entire protective device. This integrated installation method not only improves the operating efficiency and reduces labor costs, but also reduces the risk of the micro-vortex generator 200 being offset or falling off, ensuring the long-term stability and reliability of the protective device.

[0061] Please continue reading Figure 2In an embodiment of the present invention, there are multiple micro vortex generators 200 , and the multiple micro vortex generators 200 are arranged at intervals along the length direction of the wind turbine blade 10 .

[0062] Specifically, in the aforementioned embodiment, the micro vortex generator 200 is mainly arranged at 20% of the chord length of the wind turbine blade 10. Although it can introduce small-scale disturbances at this position to suppress airflow separation, its drag reduction and efficiency enhancement effect may be relatively limited for other areas of the wind turbine blade 10, especially the area near the blade tip. In order to overcome this shortcoming, the present embodiment adopts a layout mode in which a plurality of micro vortex generators 200 are arranged at intervals along the length direction of the wind turbine blade 10.

[0063] In practical applications, the number and spacing of the micro-vortex generators 200 can be reasonably determined according to the size, aerodynamic characteristics and other parameters of the wind turbine blade 10. For example, for a large wind turbine blade 10, a large number of micro-vortex generators 200 can be set, and they can be evenly distributed at different positions in the length direction of the wind turbine blade 10 to achieve control of the airflow on the surface of the entire wind turbine blade 10. For a small wind turbine blade 10, the number of micro-vortex generators 200 can be appropriately reduced, and their spacing can be optimized according to the aerodynamic characteristics to take into account both drag reduction and efficiency enhancement and cost-effectiveness. By setting a plurality of micro-vortex generators 200 at intervals along the length direction of the wind turbine blade 10, small-scale disturbances can be introduced in a larger range, mixing in the boundary layer can be promoted, and airflow separation can be suppressed. Not only can the aerodynamic performance attenuation from the root to the tip of the blade be delayed, but also different incoming flow conditions and blade operating conditions can be adapted to achieve dynamic regulation of the airflow, further improving the adaptability and reliability of the wind turbine blade 10.

[0064] Please continue reading Figure 2 and Figure 3 , and see Figure 4 In an embodiment of the present invention, the micro vortex generator 200 has a slope structure, and the orthographic projection of the micro vortex generator 200 on the suction surface 11 is a triangular structure 210 .

[0065] Specifically, the micro vortex generator 200 adopts a sloped structure, that is, its cross section presents an inclined surface, thereby forming a streamlined shape. This sloped structure can conform to the flow direction of the airflow, reduce the impact of the airflow, and reduce the aerodynamic resistance.

[0066] At the same time, the positive projection of the micro vortex generator 200 on the suction surface 11 in this embodiment is a triangular structure 210. That is, when observed vertically upward from the suction surface 11, the projection outline of the micro vortex generator 200 presents a triangle. This triangular structure 210 can form a pair of symmetrical vortices in the airflow, promoting momentum exchange and energy transfer in the boundary layer. Compared with vortex generators of other shapes, the triangular structure 210 can introduce orderly vortices in a larger range, improving the efficiency and reliability of airflow control.

[0067] Please continue reading Figure 3 and Figure 4 In an embodiment of the present invention, the triangular structure 210 includes a base and two waists, the length of the base is W, the distance between the vertex opposite to the base and the base is C, the angle between the angle bisector of the vertex opposite to the base and a waist is α, the height of the micro vortex generator 200 is H, the distance between two adjacent micro vortex generators 200 is S, and the boundary layer displacement thickness of the wind turbine blade 10 is δ; wherein, S=5*W, W=0.73*δ, C=1.64*δ, H=0.4*δ, α=24°.

[0068] Specifically, by setting the bottom edge length W to 0.73 times the boundary layer displacement thickness δ, it is ensured that the scale of the micro vortex generator 200 is adapted to the boundary layer thickness, and small-scale disturbances can be effectively introduced to promote mixing and energy exchange in the boundary layer. At the same time, the distance C between the top angle and the bottom edge is set to 1.64 times the boundary layer displacement thickness, so that the top angle can have a moderate guiding effect on the airflow, inhibit airflow separation, and maintain the stability of the boundary layer.

[0069] In addition, the induced drag was reduced by setting the angle α between the bisector of the vertex angle and the waist edge to 24°. The height H of the vortex generator was controlled at 0.4 times the displacement thickness of the boundary layer, which not only introduced sufficient disturbance to affect the flow near the wall, but also avoided the drag loss caused by over-sizing.

[0070] The distance S between adjacent micro vortex generators 200 is set to 5 times the bottom edge length W, ensuring that the airflow disturbances between adjacent vortex generators can be effectively coupled to form a continuous vortex structure, achieving uniform control of the airflow on the entire blade surface, while avoiding airflow interference and energy loss caused by overly dense arrangement.

[0071] Please continue reading Figure 3 and Figure 4 In the embodiment of the present invention, the ratio of the height of the micro vortex generator 200 to the boundary layer displacement thickness of the wind turbine blade 10 is r, and r≤0.5.

[0072] Specifically, the boundary layer displacement thickness δ of the wind turbine blade 10 characterizes the distance required for the flow velocity in the near-wall region to increase from zero to the free flow velocity, reflecting the typical thickness of the boundary layer. By controlling the height H of the micro-vortex generator 200 to be within 50% of the boundary layer displacement thickness, i.e., r≤0.5, it can be ensured that the micro-vortex generator 200 introduces moderate disturbances in the boundary layer, promotes momentum and energy exchange in the layer, and avoids drag losses caused by over-sizing.

[0073] In addition, controlling the height of the micro vortex generator 200 within 50% of the boundary layer displacement thickness also helps maintain the aerodynamic shape of the blade surface and reduce interference with the airflow, which can further improve the smoothness of the blade surface, reduce aerodynamic noise, and improve the environmental friendliness of the wind turbine.

[0074] In the embodiment of the present invention, the protective film 100 and the micro vortex generator 200 are both sealed and connected to the surface of the wind turbine blade 10 .

[0075] Specifically, the sealed connection can effectively fill the tiny gap between the protective film 100 and the blade surface, prevent the intrusion of foreign matter such as moisture and dust, and improve the sealing and reliability of the connection. It can not only improve the installation accuracy and stability of the micro vortex generator 200, but also make it transition flush with the blade surface, reduce aerodynamic resistance, and further improve the power generation efficiency of the wind turbine.

[0076] The present invention also provides a wind power generation equipment, which uses the wind turbine blade protection device as described above.

[0077] It should be understood that the specific structure of the protective device for the wind turbine blades refers to the above-mentioned embodiments. Since the wind power generation equipment adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0078] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention and the drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A wind turbine blade protection device, characterized in that: The wind turbine blade (10) comprises a pressure surface and a suction surface (11), wherein a blade leading edge section (12) is formed at a transitional connection between the pressure surface and the suction surface (11); The wind turbine blade protection device comprises: A protective film (100), the protective film (100) extending along the length direction of the wind turbine blade (10), the protective film (100) covering the leading edge section (12) of the blade; A micro vortex generator (200) is arranged on the suction surface (11) at a position corresponding to the protective film (100).

2. The wind turbine blade protection device according to claim 1, characterized in that: The protective film (100) and the micro vortex generator (200) are synchronously installed on the wind turbine blade (10), with the spanwise position being 70% to the blade tip and the chordwise position being 20% ​​of the current airfoil chord length, and the micro vortex generator (200) is arranged at the edge of the protective film (100) on one side of the suction surface (11).

3. The wind turbine blade protection device according to claim 1, characterized in that: The micro vortex generator (200) and the protective film (100) form a modular component.

4. The wind turbine blade protection device according to any one of claims 1 to 3, characterized in that: There are a plurality of micro vortex generators (200), and the plurality of micro vortex generators (200) are arranged at intervals along the length direction of the wind turbine blade (10).

5. The wind turbine blade protection device according to claim 4, characterized in that: The micro vortex generator (200) has a sloped structure, and the orthographic projection of the micro vortex generator (200) on the suction surface (11) has a triangular structure (210).

6. The wind turbine blade protection device according to claim 5, characterized in that: The triangular structure (210) comprises a base and two waists, the length of the base is W, the distance between the vertex opposite to the base and the base is C, the angle between the bisector of the vertex opposite to the base and one of the waists is α, the height of the micro vortex generator (200) is H, the distance between two adjacent micro vortex generators (200) is S, and the boundary layer displacement thickness of the wind turbine blade (10) is δ; wherein S=5*W, W=0.73*δ, C=1.64*δ, H=0.4*δ, and α=24°.

7. The wind turbine blade protection device according to claim 5, characterized in that: The ratio of the height of the micro vortex generator (200) to the boundary layer displacement thickness of the wind turbine blade (10) is r, and r≤0.

5.

8. The wind turbine blade protection device according to any one of claims 1 to 3, characterized in that: The protective film (100) and the micro vortex generator (200) are both sealed and connected to the surface of the wind turbine blade (10).

9. A wind power generation device, characterized in that: A wind turbine blade protection device according to any one of claims 1 to 8 is used.

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