Vortex generator for fan blade and wind driven generator blade

Abstract

The invention provides a vortex generator for a fan blade and a wind driven generator blade. The vortex generator for the fan blade comprises a fixed plate, a movable plate, a movable assembly and a plurality of vortex generating assemblies. The fixing plate is in a long plate shape, and an adjusting groove is formed in the upper surface of the fixing plate and penetrates through the width direction of the fixing plate. The moving plate is in a long plate shape and is in sliding fit with the adjusting groove, and a plurality of fixing grooves are formed in the upper surface of the moving plate in the length direction of the moving plate at intervals. The moving assembly is arranged on the fixed plate and used for driving the moving plate to reciprocate in the width direction of the fixed plate. The multiple vortex generating assemblies are arranged in the fixing grooves in a one-to-one correspondence mode. The moving assembly is used for driving the moving plate to reciprocate along the moving groove, so that the position of the vortex generating assembly relative to the blade of the wind driven generator is adjusted, more wind field conditions can be adapted, the inhibition effect of the vortex generator on the flow separation phenomenon is improved, and the power generation efficiency of the wind driven generator is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of wind turbines, and in particular relates to a vortex generator for a wind turbine blade and a wind turbine blade. Background Art

[0002] As a clean energy that can be developed and applied on a large scale, wind energy has broad application prospects. With the continuous maturity of technology and the continuous increase in power generation demand, large-scale wind turbines have become a trend, which brings with it the consideration of blade structural safety. In order to ensure structural safety, wind turbine blades mostly use thick airfoils, which are easy to induce flow separation, resulting in a decrease in wind turbine power generation efficiency. In order to control the flow separation phenomenon, the prior art achieves this by installing vortex generators on wind turbine blades.

[0003] The vortex generator is a small wing arranged vertically on the surface of the wind turbine blade. The two sides of the winglet are the pressure surface and the suction surface respectively. It can generate wingtip vortices. The high-energy wingtip vortices can promote the mixing of high-kinetic energy fluid outside the boundary layer and low-kinetic energy fluid inside the boundary layer, reduce the thickness of the boundary layer, and thus delay or eliminate the flow separation phenomenon, and finally achieve the effect of increasing lift and reducing drag on the airfoil. Since wind energy is an unstable energy source, its wind speed and wind direction vary greatly due to seasonal factors. The existing vortex generators are fixedly installed on the surface of the airfoil and cannot be adjusted accordingly according to the changing characteristics of wind energy. Summary of the invention

[0004] The present invention provides a vortex generator for a fan blade and a wind turbine blade, aiming to solve the problem in the prior art that the vortex generator cannot be adjusted accordingly according to the changing characteristics of wind energy.

[0005] To achieve the above object, the technical solution adopted by the present invention is: In a first aspect, the present invention provides a vortex generator for a fan blade, comprising: The fixing plate is in the shape of a long plate, and an adjustment groove is opened on the upper surface of the fixing plate, and the adjustment groove runs through the width direction of the fixing plate; The movable plate is in the shape of a long plate and is slidably matched with the adjusting groove. The upper surface of the movable plate is provided with a plurality of fixing grooves spaced apart along its length direction; a moving assembly, disposed on the fixed plate, for driving the moving plate to reciprocate along the width direction of the fixed plate; and A plurality of eddy current generating components are arranged in the fixing grooves in a one-to-one correspondence.

[0006] In a possible implementation, the eddy current generating component includes: A mounting plate is arranged in the fixing groove, the upper surface of the mounting plate is flush with the upper surface of the movable plate, and the mounting plate is provided with a sliding groove along its length direction; Two slider mechanisms are arranged on the mounting plate at intervals along the length direction of the mounting plate and are slidably matched with the slide groove; Two wing plate mechanisms, respectively provided on the two slider mechanisms; Two first adjustment mechanisms are arranged on the mounting plate at intervals along the length direction of the mounting plate and correspond one-to-one to the slider mechanisms. The first adjustment mechanisms are used to drive the corresponding slider mechanisms to reciprocate along the slide grooves.

[0007] In a possible implementation, the wing mechanism includes: Three telescopic rods enclose a triangular wing frame, and the ends of two adjacent telescopic rods are hinged to each other; wherein the telescopic rod constituting the bottom of the wing frame is connected to the slider mechanism, and the wing frame has three postures: acute angle, right angle and obtuse angle; and Two elastic deformation sheets are arranged on two sides of the wing plate frame opposite to each other, the elastic deformation sheets are triangular in shape, and the outer edges of the elastic deformation sheets are connected to the corresponding telescopic rods.

[0008] In a possible implementation, two slide grooves are arranged at intervals along the width direction of the mounting plate; the slider mechanism includes two slider units arranged along the width direction of the mounting plate, and the first adjustment mechanism includes two first adjustment units arranged along the width direction of the mounting plate. The slide grooves, the slider units and the first adjustment units correspond one to one, and the first adjustment unit is used to drive the corresponding slider unit to reciprocate along the slide groove.

[0009] In a possible implementation, the telescopic rod includes a first rod body and a second rod body that are slidably matched with each other, wherein the first rod body that constitutes the bottom of the wing frame is rotationally matched with the corresponding slider mechanism around a vertical axis, and the second rod body that constitutes the bottom of the wing frame is slidably matched with the corresponding slider mechanism.

[0010] In a possible implementation, the slider unit includes: A sliding block, slidably matched with the sliding groove, and the telescopic rod is arranged on the sliding block; A rotating block rotatably disposed on the sliding block; and The angle adjustment unit is arranged on the sliding block and is used to drive the rotating block to rotate around a horizontal axis.

[0011] In a possible implementation, the mobile component includes: A screw rod is arranged along the width direction of the fixed plate, and the movable plate is threadedly matched with the screw rod; and The driving motor is arranged on the fixing plate and is used for driving the screw rod to rotate around its own axial direction.

[0012] Compared with the prior art, the vortex generator for fan blades provided by the present invention has the following beneficial effects: The vortex generator for wind turbine blades provided by the present invention comprises a fixed plate, a movable plate, a movable assembly and a plurality of vortex generating assemblies. The fixed plate is fixedly mounted on the wind turbine blades. The fixed plate is provided with an adjustment groove along its width direction. The movable plate is provided with a plurality of vortex generating assemblies. The movable assembly is used to drive the movable plate to move back and forth along the movable groove, thereby adjusting the position of the vortex generating assembly relative to the wind turbine blades. The vortex generating assembly can adapt to more wind field conditions and improve the inhibitory effect of the vortex generator on flow separation phenomena.

[0013] In a second aspect, the present invention provides a wind turbine blade, comprising: A blade body, wherein a mounting groove is formed on the surface of the blade body; and In the vortex generator for a fan blade as described in any of the above implementations, the fixed plate is arranged in the mounting groove, and the upper surface of the movable plate is flush with the surface of the blade body.

[0014] In a possible implementation, the blade body is provided with a plurality of the mounting grooves along its length direction, and a plurality of vortex generators for the fan blades are provided corresponding to the mounting grooves.

[0015] In a possible implementation, the two side walls of the mounting groove are respectively provided with accommodating grooves, and the wind turbine blade also includes two covering plates, which are relatively arranged on both sides of the movable plate, one side of the covering plate is connected to the movable plate, and the other side can be slidably arranged in the accommodating groove.

[0016] The wind turbine blade provided by the present invention adopts the vortex generator for wind turbine blades in any of the above-mentioned implementation modes, and has the same technical effects as those thereof, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a vortex generator for a fan blade provided by an embodiment of the present invention; Figure 2 for Figure 1 A partial enlarged view of the middle A part; Figure 3 A three-dimensional diagram of an eddy current generating assembly according to an embodiment of the present invention; Figure 4 It is a three-dimensional diagram of the eddy current generating component after the elastic deformation sheet is hidden in the embodiment of the present invention; Figure 5 It is a cross-sectional view of the eddy current generating component after the elastic deformation sheet is hidden in the embodiment of the present invention; Figure 6 The explosion of the eddy current generating assembly in the embodiment of the present invention Figure 1 ; Figure 7 The explosion of the eddy current generating assembly in the embodiment of the present invention Figure 2 ; Figure 8 A partial schematic diagram of a wind turbine blade provided by an embodiment of the present invention; Fig. 9 A cross-sectional view of a wind turbine blade provided by an embodiment of the present invention; Fig.10 The lift-to-drag ratio curves of three shapes of wing mechanisms at different wind speeds obtained in the experiment.

[0018] Description of reference numerals: 10. Fixed plate; 11. Adjustment slot; 20. Moving plate; 21. Fixed slot; 30. Moving assembly; 31. Screw rod; 32. Driving motor; 40. Eddy current generating assembly; 41. Mounting plate; 411. Slide slot; 42. Slider unit; 421. Sliding block; 422. Rotating block; 423. Angle adjustment unit; 43. Wing mechanism; 431. Telescopic rod; 4311. First rod body; 4312. Second rod body; 432. Elastic deformation sheet; 50. Blade body; 60. Cover plate. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] It should be noted that when an element is referred to as being "fixed to", "fixed" or "fixedly disposed" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" or "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. When an element is referred to as being "set to" or "disposed on" another element, it may be directly on the other element or there may be a central element. "Multiple" refers to two or more quantities. "At least one" refers to one or more quantities. "Several" refers to one or more quantities.

[0021] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0022] Please also read Figures 1 to 10 , the vortex generator for a wind turbine blade and the wind turbine blade provided in the embodiments of the present invention are described below.

[0023] See also Figures 1 to 7 In the first aspect, an embodiment of the present invention provides a vortex generator for a fan blade, comprising a fixed plate 10, a movable plate 20, a movable assembly 30 and a plurality of vortex generating assemblies 40. The fixed plate 10 is in the shape of a long plate, and an adjustment groove 11 is provided on the upper surface of the fixed plate 10, and the adjustment groove 11 runs through the width direction of the fixed plate 10; the movable plate 20 is in the shape of a long plate, and is slidably fitted in the adjustment groove 11, and a plurality of fixed grooves 21 are provided on the upper surface of the movable plate 20 at intervals along its length direction; the movable assembly 30 is provided on the fixed plate 10, and is used to drive the movable plate 20 to reciprocate along the width direction of the fixed plate 10; and a plurality of vortex generating assemblies 40 are provided in the fixed grooves 21 in a one-to-one correspondence.

[0024] Compared with the prior art, the vortex generator for fan blades provided by the embodiment of the present invention has the following beneficial effects: The vortex generator for wind turbine blades provided in an embodiment of the present invention comprises a fixed plate 10, a movable plate 20, a movable assembly 30 and a plurality of vortex generating assemblies 40. The fixed plate 10 is fixedly mounted on the wind turbine blade. The fixed plate 10 is provided with an adjustment groove 11 along its width direction. A plurality of vortex generating assemblies 40 are mounted on the movable plate 20. The movable assembly 30 is used to drive the movable plate 20 to reciprocate along the movable groove, thereby adjusting the position of the vortex generating assembly 40 relative to the wind turbine blade. The vortex generating assembly 40 can adapt to more wind field conditions and improve the inhibitory effect of the vortex generator on the flow separation phenomenon.

[0025] The fixed plate 10 is a long plate-like component, which can be a flat plate or can be appropriately bent into a certain arc to match the shape of the wind turbine blade. An adjustment groove 11 is provided on the upper surface of the fixed plate 10, i.e., the surface adjacent to the wind turbine blade. The adjustment groove 11 can be an arc groove, a straight groove, etc., and its cross section can be square, T-shaped, etc. The vortex generating component 40 is installed in the fixed groove 21 of the movable plate 20. The movable plate 20 is accommodated in the adjustment groove 11 and can slide along the adjustment groove 11 under the drive of the movable component 30 to adjust the horizontal position of the vortex generating component 40.

[0026] Optionally, the moving component 30 can achieve power output and transmission through mechanical structures such as an electric telescopic rod, a motor and a gear rack mechanism, a crank slider mechanism, and a conveying flexible shaft.

[0027] It should be noted that the vortex generator for wind turbine blades provided in the embodiment of the present invention can be installed on the blades of a wind turbine, or can be installed on a blade model for use in a wind tunnel model test.

[0028] like Figures 3 to 7As shown, in some possible embodiments, the vortex generating assembly 40 includes a mounting plate 41, a slider mechanism, a wing mechanism 43 and a first adjustment mechanism. The mounting plate 41 is arranged on the fixed groove 21, the upper surface of the mounting plate 41 is flush with the upper surface of the movable plate 20, and the mounting plate 41 is provided with a slide groove 411 along its length direction; two slider mechanisms are arranged on the mounting plate 41 at intervals along the length direction of the mounting plate 41, and slide with the slide groove 411; two wing mechanisms 43 are respectively arranged on the two slider mechanisms; two first adjustment mechanisms are arranged on the mounting plate 41 at intervals along the length direction of the mounting plate 41, and correspond to the slider mechanisms one by one, and the first adjustment mechanism is used to drive the corresponding slider mechanism to reciprocate along the slide groove 411.

[0029] In this embodiment, the mounting plate 41 is fixed in the fixed groove 21 of the movable plate 20, and a slide groove 411 is provided on the upper surface of the mounting plate 41. Two slider mechanisms are relatively arranged in the slide groove 411, and the two first adjustment mechanisms are used to drive the two slider mechanisms to move along the slide groove 411, so as to adjust the spacing between the two wing plate mechanisms 43.

[0030] The wing mechanism 43 may be a single plate body, which is usually triangular in shape, or the wing mechanism 43 may be a plate-like component with a variable shape, which can change its shape according to the wind field conditions, so as to obtain better use effect.

[0031] The way to improve the power generation efficiency of wind turbines is to find a way to reduce the drag coefficient of the airfoil as much as possible on the basis of increasing the lift coefficient of the airfoil. From this, it can be seen that the larger the ratio of the lift coefficient to the drag coefficient of the airfoil (i.e., the lift-to-drag ratio), the better the effect on improving the power generation efficiency of the wind turbine.

[0032] Therefore, if Fig.10 As shown in FIG. 1 , it is feasible to judge the effect of three shapes of vortex generators on improving the power generation efficiency of wind turbines by comparing the lift-to-drag ratio of airfoils equipped with three shapes of vortex generators. Fig.10 , respectively right angle, 120° obtuse angle and 135° obtuse angle triangle, the lift-to-drag ratio curves of the airfoil with three shapes of vortex generators installed at different wind speeds are shown in the figure below: Fig.10 shown.

[0033] Depend on Fig.10 The following conclusions can be drawn: when the wind speed ranges from 8m / s to 20m / s, the lift-to-drag ratio of the airfoil equipped with a right-angled triangle vortex generator is the largest, that is, the right-angled triangle vortex generator has the best effect on improving the power generation efficiency of the wind turbine; when the wind speed ranges from 20m / s to 38m / s, the 120° triangle vortex generator has the best effect on improving the power generation efficiency of the wind turbine; when the wind speed ranges from 38m / s to 50m / s, the 135° triangle vortex generator has the best effect on improving the power generation efficiency of the wind turbine.

[0034] From the above analysis, it can be seen that in different wind speed ranges, the shapes of vortex generators that are most effective in improving the power generation efficiency of wind turbines are different, that is, in different wind speed ranges, vortex generators of different shapes must be changed to achieve the best effect of improving the power generation efficiency of wind turbines.

[0035] Based on the above conclusions, in order to achieve the change of the wing plate shape of the vortex generating component 40, as Figure 4 and Figure 5 As shown, in some possible embodiments, the wing plate mechanism 43 includes a telescopic rod 431 and an elastic deformation sheet 432. Three telescopic rods 431 enclose a triangular wing plate frame, and the ends of two adjacent telescopic rods 431 are hinged to each other; wherein, the telescopic rod 431 constituting the bottom of the wing plate frame is connected to the slider mechanism, and the telescopic rod 431 can be freely extended and retracted within a certain range, so that the wing plate frame has three postures: acute angle, right angle and obtuse angle; two elastic deformation sheets 432 are arranged on both sides of the wing plate frame opposite to each other, and the elastic deformation sheets 432 are triangular, and the outer edges of the elastic deformation sheets 432 are connected to the corresponding telescopic rods 431.

[0036] This embodiment uses three telescopic rods 431 to enclose the wing plate mechanism 43 of the vortex generating assembly. The shape of the wing plate of the vortex generating assembly 40 is changed by the extension and retraction of the telescopic rods 431 to adapt to different wind speed environments.

[0037] In this embodiment, the telescopic rod 431 can be specifically an electric telescopic rod. The ends of the three telescopic rods 431 are hinged in sequence to form a triangular wing frame. The elastic deformation sheet 432 is made of rubber material and can be elastically deformed to a certain extent. The elastic deformation sheet 432 is fixed to the telescopic rod 431 by rivets, hooks and other connecting parts, and can be elastically deformed when the telescopic rod 431 moves, covering both sides of the wing frame. Furthermore, in order to improve the support stability, a support rod can be set on one side of the telescopic rod 431 used to enclose the wing frame to provide auxiliary support for the elastic deformation sheet 432.

[0038] like Figure 3 , Figure 4 and Figure 6 As shown, in some possible embodiments, two slide grooves 411 are arranged at intervals along the width direction of the mounting plate 41; the slider mechanism includes two slider units 42 arranged along the width direction of the mounting plate 41, and the first adjustment mechanism includes two first adjustment units arranged along the width direction of the mounting plate 41. The slide grooves 411, the slider units 42 and the first adjustment units correspond one to one, and the first adjustment unit is used to drive the corresponding slider unit 42 to reciprocate along the slide grooves 411. The first adjustment unit can specifically be an electric telescopic rod, which can adjust the distance between the two wing plate mechanisms 43.

[0039] like Figure 3 and Figure 4 As shown, in some possible embodiments, the telescopic rod 431 includes a first rod body 4311 and a second rod body 4312 that slide together with each other, wherein the first rod body 4311 constituting the bottom of the wing plate frame rotates with the corresponding slider mechanism around a vertical axis, and the second rod body 4312 constituting the bottom of the wing plate frame slides with the corresponding slider mechanism, so that the telescopic rod 431 constituting the bottom of the wing plate frame has sufficient degrees of freedom and can deflect in the horizontal plane, thereby changing the relative angle between the two wing plate mechanisms 43.

[0040] In this embodiment, two slide grooves 411, two slider units 42 and two first adjustment units are respectively provided, and the two slider units 42 can move separately, thereby changing the spacing and relative angle between the two wing mechanisms 43, so that the vortex generator can be adjusted in more postures and has richer functions.

[0041] like Figure 6 and Figure 7 As shown, in some possible embodiments, the slider unit 42 includes a sliding block 421, a rotating block 422 and an angle adjustment unit 423. The sliding block 421 is slidably matched with the slide slot 411, and the telescopic rod 431 is disposed on the sliding block 421; the rotating block 422 is rotatably disposed on the sliding block 421; the angle adjustment unit 423 can be specifically a motor, and the angle adjustment unit 423 is disposed on the sliding block 421, and is used to drive the rotating block 422 to rotate around a horizontal axis, so as to adjust the horizontal flip angle of the wing mechanism 43.

[0042] like Figure 2 As shown, in some possible embodiments, the moving assembly 30 includes a screw rod 31 and a drive motor 32. The screw rod 31 is arranged along the width direction of the fixed plate 10, and the moving plate 20 is threadedly matched with the screw rod 31; the drive motor 32 is arranged on the fixed plate 10, and is used to drive the screw rod 31 to rotate forward or reverse around its own axis, thereby driving the moving plate 20 to reciprocate along the adjustment slot 11.

[0043] like Figure 8 and Fig. 9 In the second aspect, an embodiment of the present invention provides a wind turbine blade, comprising a blade body 50 and a vortex generator for a wind turbine blade as provided in any of the above embodiments, wherein a mounting groove is provided on the surface of the blade body 50; a fixed plate 10 is arranged in the mounting groove, and an upper surface of the movable plate 20 is flush with the surface of the blade body 50.

[0044] The wind turbine blade provided by the present invention adopts the vortex generator for wind turbine blades in any of the above embodiments, and has the same technical effects as those in the above embodiments, which will not be described in detail here.

[0045] In some possible embodiments, the blade body 50 is provided with a plurality of mounting grooves along its length direction, and a plurality of vortex generators for fan blades are arranged corresponding to the mounting grooves. The number of vortex generators for fan blades can be specifically set according to the size and length of the blade body 50 .

[0046] like Figure 8 and Fig. 9 As shown, in some possible embodiments, the two side walls of the installation groove are respectively provided with a receiving groove, and the wind turbine blade further includes two covering plates 60, which are relatively arranged on both sides of the movable plate 20, one side of the covering plate 60 is connected to the movable plate 20, and the other side is slidably arranged in the receiving groove. The covering plate 60 can move with the movable plate 20, and the covering plate 60 is used to cover and shield the upper part of the adjustment groove 11 to prevent the concave groove body from affecting the airflow on the surface of the blade body 50.

[0047] It can be understood that the various parts in the above-mentioned embodiments can be freely combined or deleted to form different combination embodiments. The specific contents of each combination embodiment will not be repeated here. After this description, it can be considered that the specification of the present invention has recorded various combination embodiments and can support different combination embodiments.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vortex generator for a fan blade, characterized in that: include: The fixing plate (10) is in the shape of a long plate, and an adjustment groove (11) is provided on the upper surface of the fixing plate (10), and the adjustment groove (11) runs through the width direction of the fixing plate (10); The movable plate (20) is in the shape of a long plate and is slidably fitted in the adjustment groove (11); a plurality of fixing grooves (21) are provided on the upper surface of the movable plate (20) at intervals along its length direction; a moving assembly (30), disposed on the fixed plate (10), and used for driving the moving plate (20) to reciprocate along a width direction of the fixed plate (10); and A plurality of eddy current generating components (40) are arranged in the fixing grooves (21) in a one-to-one correspondence.

2. The vortex generator for fan blades according to claim 1, characterized in that: The vortex generating component (40) comprises: A mounting plate (41) is arranged in the fixing groove (21), the upper surface of the mounting plate (41) is flush with the upper surface of the movable plate (20), and the mounting plate (41) is provided with a sliding groove (411) along its length direction; Two slider mechanisms are arranged on the mounting plate (41) at intervals along the length direction of the mounting plate (41) and are slidably matched with the slide groove (411); Two wing plate mechanisms (43), respectively arranged on the two slider mechanisms; and Two first adjustment mechanisms are arranged on the mounting plate (41) at intervals along the length direction of the mounting plate (41) and correspond one-to-one to the slider mechanisms. The first adjustment mechanisms are used to drive the corresponding slider mechanisms to reciprocate along the slide groove (411).

3. The vortex generator for fan blades according to claim 2, characterized in that: The wing plate mechanism (43) comprises: Three telescopic rods (431) enclose a triangular wing plate frame, and the ends of two adjacent telescopic rods (431) are hinged to each other; wherein the telescopic rod (431) constituting the bottom of the wing plate frame is connected to the slider mechanism, and the wing plate frame has three postures: acute angle, right angle and obtuse angle; and Two elastic deformation sheets (432) are arranged opposite to each other on two sides of the wing plate frame, the elastic deformation sheets (432) are triangular in shape, and the outer edges of the elastic deformation sheets (432) are connected to the corresponding telescopic rods (431).

4. The vortex generator for fan blades according to claim 3, characterized in that: Two of the slide grooves (411) are arranged at intervals along the width direction of the mounting plate (41); the slider mechanism includes two slider units (42) arranged along the width direction of the mounting plate (41); the first adjustment mechanism includes two first adjustment units arranged along the width direction of the mounting plate (41); the slide grooves (411), the slider units (42) and the first adjustment units correspond to each other one by one, and the first adjustment units are used to drive the corresponding slider unit (42) to move back and forth along the slide groove (411).

5. The vortex generator for fan blades according to claim 4, characterized in that: The telescopic rod (431) comprises a first rod body (4311) and a second rod body (4312) which are slidably matched with each other, wherein the first rod body (4311) constituting the bottom of the wing plate frame is rotationally matched with the corresponding slider mechanism around a vertical axis, and the second rod body (4312) constituting the bottom of the wing plate frame is slidably matched with the corresponding slider mechanism.

6. The vortex generator for fan blades according to claim 4, characterized in that: The slider unit (42) comprises: A sliding block (421) is slidably matched with the sliding groove (411), and the telescopic rod (431) is arranged on the sliding block (421); A rotating block (422) rotatably disposed on the sliding block (421); and An angle adjustment unit (423) is provided on the sliding block (421) and is used to drive the rotating block (422) to rotate around a horizontal axis.

7. The vortex generator for fan blades according to claim 1, characterized in that: The moving component (30) comprises: A screw rod (31) is arranged along the width direction of the fixed plate (10), and the movable plate (20) is threadably matched with the screw rod (31); and A driving motor (32) is provided on the fixing plate (10) and is used to drive the screw rod (31) to rotate around its own axial direction.

8. A wind turbine blade, characterized in that: include: A blade body (50), wherein a mounting groove is provided on a surface of the blade body (50); as well as According to the vortex generator for a fan blade as claimed in any one of claims 1 to 7, the fixed plate (10) is arranged in the mounting groove, and the upper surface of the movable plate (20) is flush with the surface of the blade body (50).

9. The wind turbine blade according to claim 8, characterized in that: The blade body (50) is provided with a plurality of the mounting grooves along its length direction, and a plurality of vortex generators for the fan blades are provided corresponding to the mounting grooves.

10. The wind turbine blade according to claim 8, characterized in that: The two side walls of the installation groove are respectively provided with accommodating grooves, and the wind turbine blade further comprises two covering plates (60), the two covering plates (60) are arranged on two sides of the movable plate (20) opposite to each other, one side of the covering plate (60) is connected to the movable plate (20), and the other side is slidably arranged in the accommodating groove.

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