A wind turbine inflatable flow guide device

Abstract

The present invention discloses an inflatable flow guide device for a wind turbine, belonging to the technical field of wind power generation equipment, wherein an air pump and an air extraction pump are arranged inside a base; a direction-adjusting motor is fixed at the upper end of the base, a direction-adjusting member is connected to the driving end of the direction-adjusting motor at the lower end, and an upper end of the direction-adjusting member is hinged to one end of an angle-adjusting member; an air-inflating hole and an air-extraction hole are arranged on the surface of an air film body, an air-inflating pump is connected to the air-inflating hole through an air-inflating hose, and an air-extraction pump is connected to the air-extraction hole through an air-extraction hose; connecting plate hinges are distributed on the surface of the air film body, and a connecting plate pin is connected between the same row of connecting plate hinges; adjacent connecting plate pins are connected by a plurality of shape-adjusting hinges; the other end of the angle-adjusting member is hinged to one side of a connecting platform, and the other side of the connecting platform is connected to a designated group of shape-adjusting hinges. The present invention enables the geometric shape and arrangement of the flow guide device to change dynamically with wind conditions, so as to meet the flow guide requirements under complex wind conditions and differentiated wind power equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of wind power generation equipment, and in particular relates to an inflatable flow guide device for a wind turbine set. Background Art

[0002] At present, wind power generation has attracted widespread attention as an important way to utilize clean energy in building a new energy system. Wind power generation can convert wind energy into electrical energy. However, wind speed, wind direction and its turbulence characteristics will directly affect the energy capture efficiency of wind turbines. The installation of guide plates is an important means to improve airflow conditions and is widely used in the field of wind power.

[0003] At present, traditional rigid guide plates improve the power generation efficiency of wind turbines by improving airflow conditions, but their practical application value is limited by their heavy weight, complex installation, and poor adaptability to wind speed changes. In actual operation, the wind conditions on the site are complex, the airflow conditions change dynamically, and the structural characteristics of wind power equipment vary significantly. How to make the geometry and layout of the guide plates change dynamically with the wind conditions to meet the diversion needs under complex wind conditions and differentiated wind power equipment is an urgent problem to be solved. Summary of the invention

[0004] To this end, the present invention provides an inflatable flow guide device for a wind turbine, which can enable the geometric shape and arrangement of the flow guide device to change dynamically with wind conditions to meet the flow guide requirements under complex wind conditions and differentiated wind turbine equipment.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: an inflatable flow guide device for a wind turbine, comprising an integrated control component and an air film flow guide component; the integrated control component comprises a base, a direction adjustment motor, a direction adjustment member, an angle adjustment member, an air inflation hose and an air extraction hose; the air film flow guide component comprises an air film body, a connecting plate hinge, a connecting plate pin shaft, a shape adjustment hinge and a connecting platform;

[0006] An air pump and an air extraction pump are provided inside the base; the direction adjustment motor is fixed to the upper end of the base, the lower end of the direction adjustment member is connected to the driving end of the direction adjustment motor, and the upper end of the direction adjustment member is hinged to one end of the angle adjustment member;

[0007] The surface of the air membrane body is provided with an inflation hole and an exhaust hole, the inflation pump is connected to the inflation hole through the inflation hose, and the exhaust pump is connected to the exhaust hole through the exhaust hose;

[0008] The connecting plate hinges are distributed on the surface of the air film body, and one connecting plate pin is connected between the connecting plate hinges in the same row; and the adjacent connecting plate pins are connected by a plurality of the shape-adjusting hinges;

[0009] The other end of the angle adjustment piece is hinged to one side of the connecting platform, and the other side of the connecting platform is connected to a designated group of shape adjustment hinges.

[0010] As a preferred solution of the inflatable flow guide device for wind turbines, the shape-adjusting hinges are provided in three rows, and each row of the shape-adjusting hinges includes a plurality of shape-adjusting monomers hinged in sequence;

[0011] The shape-adjusting monomer is triangular in shape, and the hinged parts of two adjacent shape-adjusting monomers are connected to a shape-adjusting driving motor;

[0012] The air film body is made of PVDF film material, and the relative positions of two adjacent shape-adjusting units in a single row of shape-adjusting hinges are adjusted by the shape-adjusting drive motor to adjust the curling degree of the air film guide plate formed by the air film body.

[0013] As a preferred solution of the inflatable flow guide device of the wind turbine generator set, the hinged portion of the direction adjustment member and the angle adjustment member is connected to a first angle adjustment motor; the hinged portion of the angle adjustment member and the connecting platform is connected to a second angle adjustment motor.

[0014] As a preferred solution for the inflatable flow guide device of a wind turbine, the position distribution formula of the connecting plate hinge on the air film body is:

[0015] ;

[0016] ;

[0017] Where x i is the position of the i-th connecting plate hinge; x0 is the starting position of the connecting plate hinge; Δx is the connecting plate hinge spacing; n is the number of connecting plate hinges; L is the guide surface length of the air film body.

[0018] As a preferred solution for the inflatable flow guide device of the wind turbine, the deformation control formula of the air film body is:

[0019] ;

[0020] ;

[0021] In the formula, y i is the hinge angle of the i-th plate; θ i is the angle of the i-th adjustment hinge; k i represents the gain coefficient of the shape-adjusting hinge connected to the connecting plate hinge; δx is the position offset of the connecting plate pin; R is the curling radius of the air film body;

[0022] The torque formula of the shape-adjusting drive motor is:

[0023] ;

[0024] Where, T is the torque of the shaping drive motor; k is the torque constant.

[0025] As a preferred solution for the inflatable flow guide device of a wind turbine, the control formula for the pitch angle change of the air film body is:

[0026] ;

[0027] Wherein, θ(t) is the pitch angle of the air film body; θ0 is the initial pitch angle of the air film body; k1 is the driving conversion rate of the first angle adjustment motor; U(t) is the input signal of the first angle adjustment motor, which controls the adjustment of the pitch angle; k3 is the influence coefficient of wind speed on the pitch angle; W(t) is the wind speed at time t; D(t) is the airflow direction at time t, indicating the direction of the wind.

[0028] As a preferred solution for the inflatable flow guide device of a wind turbine, the control formula for the direction change of the air film body is:

[0029] ;

[0030] Wherein, Φ(t) is the steering angle at time t; Φ0 is the initial steering angle; k2 is the steering motor conversion rate; V(t) is the steering motor input signal, which controls the adjustment of the steering angle; k4 is the influence coefficient of wind speed on the steering angle, which indicates the sensitivity of wind speed to the change of steering angle.

[0031] As a preferred solution for the inflatable flow guide equipment of the wind turbine, the dynamic adjustment optimization formula for the flow guide of the air film body is:

[0032] ;

[0033] Where O(t) is the optimization target value at time t, which is used to evaluate the diversion effect; α is the weight coefficient, which indicates the importance of power generation efficiency in the optimization; E(t) is the power generation efficiency at time t, which represents the actual output of the wind turbine; β is the weight coefficient, which indicates the influence of pitch angle deviation on the optimization target; θ opt is the optimal pitch angle; γ is the weight coefficient, which indicates the influence of steering angle deviation on the optimization target; Φ opt is the optimal steering angle.

[0034] As a preferred solution for the inflatable flow guide device of the wind turbine generator set, the control formula of the inflatable pump is:

[0035] , ;

[0036] ;

[0037] In the formula, Q cis the inflation flow rate; V is the volume of the air film body; P(t) is the gas pressure in the air film body at time t; P in is the high-pressure gas pressure generated by the air pump; k` is the pressure drop constant of gas flow; V f is the target volume of the air film body; V(t)` is the volume of the air film body at time t; P is the gas pressure in the air film body; P set Set the target volume for the air film body.

[0038] As a preferred solution for the inflatable flow guide equipment of the wind turbine generator set, the air pump control formula is:

[0039] ;

[0040] In the formula, Q f is the deflation flow rate, which indicates the rate at which gas flows out of the air film body; k f is the flow constant of the deflation flow; P out is the external environmental pressure of the air film body; A is the effective area of ​​the air extraction port.

[0041] The present invention has the following advantages: since an integrated control component and an air film guide component are provided; the integrated control component includes a base, a direction adjustment motor, a direction adjustment piece, an angle adjustment piece, an inflation hose and an exhaust hose; the air film guide component includes an air film body, a connecting plate hinge, a connecting plate pin shaft, a shape adjustment hinge and a connecting platform; an inflation pump and an exhaust pump are provided inside the base; the direction adjustment motor is fixed to the upper end of the base, the lower end of the direction adjustment piece is connected to the driving end of the direction adjustment motor, and the upper end of the direction adjustment piece is hinged to one end of the angle adjustment piece; an inflation hole and an exhaust hole are provided on the surface of the air film body, the inflation pump is connected to the inflation hole through an inflation hose, and the exhaust pump is connected to the exhaust hole through an exhaust hose; the connecting plate hinges are distributed on the surface of the air film body, and a connecting plate pin shaft is connected between the same row of connecting plate hinges; adjacent connecting plate pin shafts are connected by a number of shape adjustment hinges; the other end of the angle adjustment piece is hinged to one side of the connecting platform, and the other side of the connecting platform is connected to a specified group of shape adjustment hinges. The present invention uses flexible membrane materials to make the guide structure, which forms self-support through gas pressure, can greatly reduce weight and simplify installation, and is easy to transport and install; in addition, the design has the ability to automatically adjust the geometric shape to adapt to different wind conditions, thereby optimizing the airflow path, reducing eddies and turbulence, improving wind energy capture efficiency, and promoting the advancement of wind power generation technology; because the geometric shape of the air film body is maintained by filling with high-pressure air, the basic structural conditions are provided for realizing flexible and dynamic changes in the air film body's guide. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0043] Figure 1 A schematic diagram of the three-dimensional structure of an inflatable flow guide device for a wind turbine set provided in an embodiment of the present invention from a first perspective;

[0044] Figure 2 A schematic diagram of the three-dimensional structure of an inflatable flow guide device for a wind turbine generator set provided in an embodiment of the present invention from a second viewing angle;

[0045] Figure 3 A schematic diagram of the structure of an integrated control assembly of an inflatable flow guide device for a wind turbine provided in an embodiment of the present invention;

[0046] Figure 4 It is a schematic diagram of the structure of an air film guide assembly of an inflatable guide device for a wind turbine provided in an embodiment of the present invention.

[0047] In the figure, 1. integrated control component; 2. air film guide component; 3. base; 4. direction adjustment motor; 5. direction adjustment part; 6. angle adjustment part; 7. inflation hose; 8. exhaust hose; 9. air film body; 10. connecting plate hinge; 11. connecting plate pin; 12. shape adjustment hinge; 13. connecting platform; 14. inflation hole; 15. exhaust hole; 16. shape adjustment unit; 17. shape adjustment drive motor; 18. first angle adjustment motor; 19. second angle adjustment motor. DETAILED DESCRIPTION

[0048] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are 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.

[0049] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The embodiment of the present invention provides an inflatable flow guide device for a wind turbine, including an integrated control component 1 and an air film flow guide component 2; the integrated control component 1 includes a base 3, a direction adjustment motor 4, a direction adjustment component 5, an angle adjustment component 6, an inflating hose 7 and an exhaust hose 8; the air film flow guide component 2 includes an air film body 9, a connecting plate hinge 10, a connecting plate pin 11, a shape adjustment hinge 12 and a connecting platform 13;

[0050] The base 3 is provided with an air pump and an air extraction pump inside; the steering motor 4 is fixed to the upper end of the base 3, the lower end of the steering member 5 is connected to the driving end of the steering motor 4, and the upper end of the steering member 5 is hinged to one end of the angle adjustment member 6; the surface of the air film body 9 is provided with an air filling hole 14 and an air extraction hole 15, the air filling pump is connected to the air filling hole 14 through the air filling hose 7, and the air extraction pump is connected to the air extraction hole 15 through the air extraction hose 8;

[0051] Among them, the connecting plate hinges 10 are distributed on the surface of the air membrane body 9, and a connecting plate pin 11 is connected between the connecting plate hinges 10 in the same row; adjacent connecting plate pins 11 are connected by a plurality of shape adjustment hinges 12; the other end of the angle adjustment piece 6 is hinged to one side of the connecting platform 13, and the other side of the connecting platform 13 is connected to a designated group of shape adjustment hinges 12.

[0052] In this embodiment, the shape-adjusting hinges 12 are provided with three rows, and each row of the shape-adjusting hinges 12 includes a plurality of shape-adjusting monomers 16 hinged in sequence; the shape-adjusting monomers 16 are triangular in shape, and the hinged parts of two adjacent shape-adjusting monomers 16 are connected to a shape-adjusting drive motor 17; the air film body 9 adopts PVDF film material, and the relative positions of two adjacent shape-adjusting monomers 16 in a single row of the shape-adjusting hinges 12 are adjusted by the shape-adjusting drive motor 17 to adjust the curling degree of the air film guide plate formed by the air film body 9.

[0053] Specifically, the air film body 9 is made of PVDF film material, with a rectangular parallelepiped as the basic shape. The back of the air film body 9 is evenly and equidistantly installed with connecting plate hinges 10. The geometric shape of the air film body 9 can be changed by moving the position of the connecting plate hinges 10. Each row of connecting plate hinges 10 is connected by connecting plate pins 11, and the linkage of connecting plate hinges 10 in the same row can be achieved by moving the position of the connecting plate pins 11. Among them, each connecting plate pin 11 is connected by a shape-adjusting hinge 12, and a shape-adjusting drive motor 17 is installed at the connection of the shape-adjusting monomer 16 of the shape-adjusting hinge 12. The position adjustment of the shape-adjusting drive motor 17 can realize the position adjustment of the adjacent shape-adjusting monomers 16. The position adjustment of the shape-adjusting monomer 16 realizes the position movement of the connected connecting plate pin 11, and finally changes the curling degree of the guide plate formed by the air film body 9 to meet the wind turbine diversion requirements.

[0054] In this embodiment, the position distribution formula of the connecting plate hinge 10 on the air film body 9 is:

[0055] ;

[0056] ;

[0057] Where xi is the position of the i-th connecting plate hinge 10 (unit, m); x0 is the starting position of the connecting plate hinge 10 (unit, m); Δx is the spacing between the connecting plate hinges 10 (unit, m); n is the number of connecting plate hinges 10; and L is the length of the guide surface of the air membrane body 9 (unit, m).

[0058] Specifically, the deformation control formula of the air film body 9 is:

[0059] ;

[0060] ;

[0061] In the formula, y i is the angle of the i-th plate hinge (unit: rad); θ i is the angle of the i-th hinge 12 (unit, rad); k i represents the gain coefficient of the shape-adjusting hinge 12 connected to the connecting plate hinge 10; δx is the position offset of the connecting plate pin 11 (unit, m); R is the curling radius of the air film body 9 (unit, m);

[0062] Specifically, the torque formula of the shape adjustment drive motor 17 is:

[0063] ;

[0064] Wherein, T is the torque of the shape-adjusting drive motor 17; k is the torque constant.

[0065] In this embodiment, the hinged part of the direction adjusting member 5 and the angle adjusting member 6 is connected to a first angle adjusting motor 18; the hinged part of the angle adjusting member 6 and the connecting platform 13 is connected to a second angle adjusting motor 19. The first angle adjusting motor 18 and the second angle adjusting motor 19 cooperate to adjust the pitch angle of the guide plate formed by the entire air film body 9.

[0066] Specifically, the air film body 9 is connected to the angle adjustment piece 6 through the connecting platform 13, and a second angle adjustment motor 19 is installed at the connection, and the pitch angle of the air film body 9 can be changed by driving the second angle adjustment motor 19. A first angle adjustment motor 18 is installed at the connection between the direction adjustment piece 5 and the angle adjustment piece 6, and the pitch angle of the angle adjustment piece 6 can be changed by driving the first angle adjustment motor 18. The pitch angle of the air film body 9 and the angle adjustment piece 6 can be changed under the drive of the first angle adjustment motor 18. Therefore, the arrangement of the air film body 9 can be dynamically adjusted according to the actual airflow conditions to meet the wind turbine diversion requirements. The angle adjustment piece 6 is installed above the direction adjustment motor 4, and the direction adjustment piece 5 is rotated by the direction adjustment motor 4 to achieve a 360° turn, thereby completing the direction adjustment operation of the air film body 9. The direction adjustment piece 5 and the angle adjustment piece 6 are dynamically adjusted according to the wind condition data to continuously optimize the airflow conditions of the wind turbine, thereby improving the power generation efficiency of the wind turbine.

[0067] The pitch angle change control formula of the air film body 9 is:

[0068] ;

[0069] Wherein, θ(t) is the pitch angle of the air film body 9 (unit, rad); θ0 is the initial pitch angle of the air film body 9 (unit, rad); k1 is the drive conversion rate of the first angle adjustment motor 18 (unit, V / rad), which indicates the influence of the motor input signal U(t) on the pitch angle; U(t) is the input signal of the first angle adjustment motor 18 (unit, V), which controls the adjustment of the pitch angle; k3 is the influence coefficient of wind speed on the pitch angle (rad / (m / s)), which indicates the sensitivity of wind speed to the change of pitch angle; W(t) is the wind speed at time t (m / s); D(t) is the airflow direction at time t (rad), which indicates the direction of wind.

[0070] The control formula for the steering change of the air film body 9 is:

[0071] ;

[0072] Wherein, Φ(t) is the steering angle at time t (unit, rad); Φ0 is the initial steering angle (unit, rad); k2 is the conversion rate of the steering motor 4 (unit, V / rad), which indicates the influence of the motor input signal V(t) on the steering angle; V(t) is the input signal of the steering motor 4 (unit, V), which controls the adjustment of the steering angle; k4 is the influence coefficient of wind speed on the steering angle (rad / (m / s)), which indicates the sensitivity of wind speed to the change of steering angle.

[0073] The optimization formula for dynamically adjusting the flow guidance of the air film body 9 is:

[0074] ;

[0075] Where O(t) is the optimization target value at time t, which is used to evaluate the diversion effect; α is the weight coefficient, which indicates the importance of power generation efficiency in the optimization; E(t) is the power generation efficiency (kw / h) at time t, which represents the actual output of the wind turbine; β is the weight coefficient, which indicates the influence of pitch angle deviation on the optimization target; θ opt is the optimal pitch angle (rad), which is the ideal angle to be achieved under the set wind conditions; γ is the weight coefficient, which indicates the influence of the steering angle deviation on the optimization target; Φ opt is the optimal steering angle (rad), which is the ideal angle to be achieved under set wind conditions.

[0076] Among them, the formula of the real-time feedback mechanism is:

[0077] ;

[0078] ;

[0079] Where U base is the input signal (V) of the reference steering motor 4, the input value under the standard state; δU(t) is the adjustment amount (V) according to the real-time wind condition data at time t, indicating the real-time adjustment of the pitch angle; V base is the input signal (V) of the reference steering motor 4, which is the input value under the standard state; δV(t) is the adjustment amount (V) according to the real-time wind condition data at time t, indicating the real-time adjustment of the steering angle.

[0080] In this embodiment, for the inflation and deflation control of the air film body 9, an air extraction pump (not shown) and an air charging pump (not shown) are installed inside the base 3, and are connected to the inflation hole 14 and the air extraction hole 15 on the back of the air film body 9 through the air extraction hose 8 and the air charging hose 7, respectively. When the inflation operation is performed, the air charging pump starts to run and generates high-pressure gas, which flows into the air film body 9 through the air charging hose 7, forming a micro-positive pressure environment in the air film body 9 to support the air film body 9. Usually, the pressure difference between the inside and outside of the air film body 9 is not less than 400pa; when the air extraction operation is performed, the air extraction pump starts to run, and the high-pressure gas flows out of the air film body 9 through the air extraction hose 8, so as to achieve rapid deflation of the air film body 9.

[0081] Specifically, during the inflation and deflation control process of the air membrane body 9, the inflation pump control formula is:

[0082] , ;

[0083] ;

[0084] In the formula, Q c is the inflation flow rate (m³ / s); V is the volume of the air film body 9 (m³); P(t) is the gas pressure in the air film body 9 at time t (Pa); P in is the high-pressure gas pressure generated by the air pump (Pa); k` is the pressure drop constant of gas flow (Pa / m³ / s); V f is the target volume of the air film body 9 (m³); V(t)` is the volume of the air film body 9 at time t (m³); P is the gas pressure in the air film body 9 (Pa); P set is the set target volume (m³) of the air film body 9.

[0085] Specifically, during the inflation and deflation control process of the air membrane body 9, the air pump control formula is:

[0086] ;

[0087] In the formula, Q f is the deflation flow rate (m³ / s), indicating the rate at which the gas flows out of the air membrane body 9; k f is the flow constant of the deflation flow (m³ / (Pa·s)); P out is the external environmental pressure of the air film body 9 (Pa); A is the effective area of ​​the air extraction port (m²).

[0088] In a possible embodiment, a splicing method for an air film guide device is provided. A connecting plate hinge 10 is installed on the back of the air film body 9, and a plurality of air film bodies 9 can be horizontally spliced ​​using a connecting plate pin 11; the mutually connected shape-adjusting hinges 12 are longitudinally connected to each connecting plate pin 11, and a plurality of air film bodies 9 can be longitudinally spliced ​​using the shape-adjusting hinges 12 at the edge of a single air film body 9. By repeatedly using the above-mentioned hinge structure, a plurality of air film bodies 9 can be spliced ​​into one, thereby expanding the guide area of ​​the equipment to meet the guide requirements of large wind turbines under complex wind conditions. To ensure the safety of the device, the maximum number of air film bodies 9 that can be spliced ​​shall not exceed 9, the tensile strength of each connecting plate hinge 10 shall not be less than 500N, and the shear strength of the cylindrical pin shall not be less than 1000N.

[0089] In summary, the air film body 9 of the present invention adopts PVDF film material, with a rectangular parallelepiped as the basic shape, and the connecting plate hinges 10 are evenly and equidistantly installed on the back of the air film body 9. The geometric shape of the air film body 9 can be changed by moving the position of the connecting plate hinges 10. Each row of connecting plate hinges 10 is connected by a connecting plate pin 11, and the linkage of the connecting plate hinges 10 in the same row can be achieved by moving the position of the connecting plate pin 11. Among them, each connecting plate pin 11 is connected by a shape-adjusting hinge 12, and a shape-adjusting drive motor 17 is installed at the connection of the shape-adjusting monomer 16 of the shape-adjusting hinge 12. The position adjustment of the adjacent shape-adjusting monomer 16 can be achieved by driving the shape-adjusting drive motor 17. The position adjustment of the shape-adjusting monomer 16 realizes the position movement of the connected connecting plate pin 11, and finally changes the curling degree of the guide plate formed by the air film body 9 to meet the wind turbine diversion requirements. The air film body 9 is connected to the angle adjustment piece 6 through the connecting platform 13, and a second angle adjustment motor 19 is installed at the connection. The pitch angle of the air film body 9 can be changed by driving the second angle adjustment motor 19. The first angle adjustment motor 18 is installed at the connection between the direction adjustment piece 5 and the angle adjustment piece 6. The pitch angle of the angle adjustment piece 6 can be changed by driving the first angle adjustment motor 18. The air film body 9 and the angle adjustment piece 6 can both change the pitch angle under the drive of the first angle adjustment motor 18. Therefore, the layout of the air film body 9 can be dynamically adjusted according to the actual air flow conditions to meet the wind turbine diversion requirements. The angle adjustment piece 6 is installed above the direction adjustment motor 4, and the direction adjustment piece 5 is rotated by the direction adjustment motor 4 to achieve a 360° turn, thereby completing the direction adjustment operation of the air film body 9. The direction adjustment piece 5 and the angle adjustment piece 6 are dynamically adjusted according to the wind condition data to continuously optimize the air flow conditions of the wind turbine, thereby improving the power generation efficiency of the wind turbine. For the inflation and deflation control of the air film body 9, an air extraction pump (not shown) and an air charging pump (not shown) are installed inside the base 3, and are connected to the inflation hole 14 and the air extraction hole 15 on the back of the air film body 9 through the air extraction hose 8 and the air charging hose 7, respectively. When the inflation operation is performed, the air charging pump starts to run and generates high-pressure gas, which flows into the air film body 9 through the air charging hose 7, forming a micro-positive pressure environment in the air film body 9 to support the air film body 9. Usually, the pressure difference between the inside and outside of the air film body 9 is not less than 400pa; when the air extraction operation is performed, the air extraction pump starts to run, and the high-pressure gas flows out of the air film body 9 through the air extraction hose 8, realizing the rapid deflation of the air film body 9.The present invention is provided with an integrated control component 1 and an air film guide component 2; the integrated control component 1 includes a base 3, a direction adjustment motor 4, a direction adjustment member 5, an angle adjustment member 6, an air charging hose 7 and an air extraction hose 8; the air film guide component 2 includes an air film body 9, a connecting plate hinge 10, a connecting plate pin 11, a shape adjustment hinge 12 and a connecting platform 13; an air charging pump and an air extraction pump are arranged inside the base 3; the direction adjustment motor 4 is fixed to the upper end of the base 3, the lower end of the direction adjustment member 5 is connected to the driving end of the direction adjustment motor 4, the upper end of the direction adjustment member 5 and one end of the angle adjustment member 6 are connected Hinged; the surface of the air film body 9 is provided with an inflation hole 14 and an exhaust hole 15, the inflation pump is connected to the inflation hole 14 through an inflation hose 7, and the exhaust pump is connected to the exhaust hole 15 through an exhaust hose 8; the connecting plate hinges 10 are distributed on the surface of the air film body 9, and a connecting plate pin 11 is connected between the same row of connecting plate hinges 10; the adjacent connecting plate pins 11 are connected by a plurality of shape-adjusting hinges 12; the other end of the angle adjustment piece 6 is hinged to one side of the connecting platform 13, and the other side of the connecting platform 13 is connected to a designated group of shape-adjusting hinges 12. The present invention adopts a flexible membrane material to make a flow-guiding structure, which is self-supported by gas pressure, can greatly reduce weight and simplify installation, and is easy to transport and install; in addition, the design has the ability to automatically adjust the geometric shape to adapt to different wind conditions, thereby optimizing the airflow path, reducing eddies and turbulence, improving wind energy capture efficiency, and promoting the advancement of wind power generation technology; because the geometric shape of the air film body 9 is maintained by filling high-pressure air, the basic structural conditions are provided for realizing flexible and dynamic changes in the flow guidance of the air film body 9.

[0090] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. An inflatable flow guide device for a wind turbine, characterized in that: It comprises an integrated control component (1) and an air film guide component (2); the integrated control component (1) comprises a base (3), a direction adjustment motor (4), a direction adjustment member (5), an angle adjustment member (6), an inflation hose (7) and an exhaust hose (8); the air film guide component (2) comprises an air film body (9), a connecting plate hinge (10), a connecting plate pin (11), a shape adjustment hinge (12) and a connecting platform (13); An air pump and an air extraction pump are provided inside the base (3); the direction adjustment motor (4) is fixed to the upper end of the base (3); the lower end of the direction adjustment member (5) is connected to the driving end of the direction adjustment motor (4); and the upper end of the direction adjustment member (5) is hinged to one end of the angle adjustment member (6); The surface of the air membrane body (9) is provided with an inflation hole (14) and an exhaust hole (15); the inflation pump is connected to the inflation hole (14) via the inflation hose (7), and the exhaust pump is connected to the exhaust hole (15) via the exhaust hose (8); The connecting plate hinges (10) are distributed on the surface of the air film body (9); one connecting plate pin shaft (11) is connected between the connecting plate hinges (10) in the same row; and adjacent connecting plate pin shafts (11) are connected via a plurality of shape-adjusting hinges (12); The other end of the angle adjustment piece (6) is hinged to one side of the connecting platform (13), and the other side of the connecting platform (13) is connected to a specified group of the shape adjustment hinges (12).

2. The inflatable flow guide device for a wind turbine according to claim 1, characterized in that: The shape-adjusting hinges (12) are arranged in three rows, and each row of the shape-adjusting hinges (12) comprises a plurality of shape-adjusting monomers (16) hinged in sequence; The shape-adjusting monomers (16) are triangular in shape, and the hinged parts of two adjacent shape-adjusting monomers (16) are connected to shape-adjusting drive motors (17); The air film body (9) is made of PVDF film material, and the relative positions of two adjacent shape-adjusting monomers (16) in a single row of shape-adjusting hinges (12) are adjusted by the shape-adjusting drive motor (17) to adjust the curling degree of the air film guide plate formed by the air film body (9).

3. The inflatable flow guide device for a wind turbine according to claim 2, characterized in that: A first angle adjustment motor (18) is connected to a hinged portion between the direction adjustment member (5) and the angle adjustment member (6); and a second angle adjustment motor (19) is connected to a hinged portion between the angle adjustment member (6) and the connecting platform (13).

4. The inflatable flow guide device for a wind turbine according to claim 3, characterized in that: The position distribution formula of the connecting plate hinge (10) on the air film body (9) is: ； ； Where x i is the position of the i-th connecting plate hinge (10); x0 is the starting position of the connecting plate hinge (10); Δx is the distance between the connecting plate hinges (10); n is the number of connecting plate hinges (10); and L is the length of the guide surface of the air film body (9).

5. The inflatable flow guide device for a wind turbine according to claim 4, characterized in that: The deformation control formula of the air film body (9) is: ； ； In the formula, y i is the angle of the i-th plate hinge (10); θ i is the angle of the i-th shaping hinge (12); k i represents the gain coefficient of the shape-adjusting hinge (12) connected to the connecting plate hinge (10); δx is the position offset of the connecting plate pin (11); R is the curling radius of the air film body (9); The torque formula of the shape-adjusting drive motor (17) is: ； Where, T is the torque of the shaping drive motor (17); k is the torque constant.

6. The inflatable flow guide device for a wind turbine according to claim 5, characterized in that: The pitch angle change control formula of the air film body (9) is: ； In the formula, θ(t) is the pitch angle of the air film body (9); θ0 is the initial pitch angle of the air film body (9); k1 is the drive conversion rate of the first angle adjustment motor (18); U(t) is the input signal of the first angle adjustment motor (18), which controls the adjustment of the pitch angle; k3 is the influence coefficient of wind speed on the pitch angle; W(t) is the wind speed at time t; D(t) is the airflow direction at time t, indicating the direction of the wind.

7. The inflatable flow guide device for a wind turbine according to claim 6, characterized in that: The control formula for the steering change of the air film body (9) is: ； Wherein, Φ(t) is the steering angle at time t; Φ0 is the initial steering angle; k2 is the conversion rate of the steering motor (4); V(t) is the input signal of the steering motor (4), which controls the adjustment of the steering angle; k4 is the influence coefficient of wind speed on the steering angle, which indicates the sensitivity of wind speed to the change of steering angle.

8. The inflatable flow guide device for a wind turbine according to claim 7, characterized in that: The optimization formula for dynamically adjusting the flow guidance of the air film body (9) is: ； Where O(t) is the optimization target value at time t, which is used to evaluate the diversion effect; α is the weight coefficient, which indicates the importance of power generation efficiency in the optimization; E(t) is the power generation efficiency at time t, which represents the actual output of the wind turbine; β is the weight coefficient, which indicates the influence of pitch angle deviation on the optimization target; θ opt is the optimal pitch angle; γ is the weight coefficient, which indicates the influence of steering angle deviation on the optimization target; Φ opt is the optimal steering angle.

9. The inflatable flow guide device for a wind turbine according to claim 8, characterized in that: The air pump control formula is: ， ； ； In the formula, Q c is the inflation flow rate; V is the volume of the air film body (9); P(t) is the gas pressure in the air film body (9) at time t; P in is the high-pressure gas pressure generated by the air pump; k` is the pressure drop constant of gas flow; V f is the target volume of the air film body (9); V(t)` is the volume of the air film body (9) at time t; P is the gas pressure in the air film body (9); P set is the set target volume of the air film body (9).

10. The inflatable flow guide device for a wind turbine according to claim 9, characterized in that: The air pump control formula is: ； In the formula, Q f k is the deflation flow rate, which indicates the rate at which gas flows out of the air film body (9); f is the flow constant of the deflation flow; P out is the external environmental pressure of the air film body (9); and A is the effective area of ​​the air extraction port.

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