CN118346510A - Lift-drag composite self-adaptive vertical axis wind turbine - Google Patents

Abstract

The application discloses a lift-drag composite self-adaptive vertical axis wind turbine, which relates to the technical field of wind power generation and comprises a wind turbine body and at least two airfoil blade groups; at least two airfoil blade sets are arranged on the wind turbine body; each wing-shaped blade group comprises a main wing-shaped blade, an aileron-shaped blade, a sail, a winding mechanism and a traction mechanism; the auxiliary wing type blade is arranged on one side of the main wing type blade, which is close to the rotation center line of the wind turbine body; the rolling mechanism is arranged on the aileron type blade, connected with one side of the sail and used for providing rolling action force for rolling the sail; the traction mechanism is arranged on the wind turbine body, connected with the other side edge of the sail and used for providing traction force for unfolding the sail; the winding mechanism is configured to generate a centrifugal force opposite to the traction force provided by the winding mechanism when rotating along with the fan body. The starting performance under the low wind speed working condition is improved, the pneumatic performance under the high wind speed working condition is not influenced, and the wind energy is collected more efficiently.

Description

Lift-drag composite self-adaptive vertical axis wind turbine

Technical Field

The application relates to the technical field of wind power generation, in particular to a lift-drag composite type self-adaptive vertical axis wind turbine.

Background

Vertical axis wind turbines can be categorized into lift type and drag type according to the working principle of the wind turbine blades. The lift type wind turbine is driven to rotate by virtue of lift generated by blades in a wind farm, and the Darrieus (Darrieus) wind turbine is the earliest and representative lift type vertical axis wind turbine.

The wind power generator can be divided into two types of bent blades and straight blades according to the shape of the Darling wind power generator, such as phi-shaped, H-shaped, delta-shaped and the like, wherein the straight blade H-shaped wind power generator is more commonly used, and the blades are mostly airfoil-shaped blades. The straight blade H-shaped wind driven generator can be divided into a single-layer airfoil design (single-layer airfoil blade design) and a double-layer airfoil design (double-layer airfoil blade design), wherein the double-layer airfoil design is added with an aileron type blade compared with the single-layer airfoil design, and the added aileron type blade can improve the aerodynamic performance and the starting performance of the wind driven generator, but the starting performance is improved only limitedly, so that a new design scheme is needed to solve the problems.

Disclosure of Invention

Therefore, the application aims to provide the lift-drag composite type self-adaptive vertical axis wind turbine, which can further improve the starting performance under the working condition of low wind speed, but can not influence the aerodynamic performance under the working condition of high wind speed.

In order to achieve the technical aim, the application provides a lift-drag composite type self-adaptive vertical axis wind turbine, which comprises a wind turbine body and at least two airfoil blade groups;

At least two airfoil blade groups are arranged on the wind turbine body and are uniformly distributed around the circumference of the rotation center line of the wind turbine body;

Each wing-shaped blade group comprises a main wing-shaped blade, an aileron-shaped blade, a sail, a rolling mechanism and a traction mechanism;

The aileron type blade is arranged on one side of the main wing type blade, which is close to the rotation center line of the wind turbine body;

The rolling mechanism is arranged on the aileron type blade, connected with one side of the sail and used for providing rolling force for rolling the sail;

The traction mechanism is arranged on the wind turbine body, connected with the other side edge of the sail and used for providing traction force for unfolding the sail;

the winding mechanism is configured to generate a centrifugal force opposite to a traction force provided by the winding mechanism when rotating along with the wind turbine body.

Further, a furling cavity is arranged in the aileron type blade;

the front edge or the inner surface of the aileron type blade is provided with a communication port which is communicated with the furling cavity and is used for the sail to pass through;

The winding mechanism is installed in the winding cavity.

Further, the winding mechanism comprises a winding rod and a torque elastic piece;

the rolling rod is rotatably arranged on the aileron type blade;

one side of the sail is connected with the winding rod;

The torque elastic piece is connected between the rolling rod and the aileron type blade and is used for providing rolling action force for the rolling rod to rotate so as to roll the sail.

Further, the traction mechanism comprises a stretching elastic piece and a sliding block;

The sliding block is slidably arranged on the wind turbine body and is connected with the other side edge of the sail;

the stretching elastic piece is connected between the wind turbine body and the sliding block and is used for providing the traction force for sliding of the sliding block so as to spread the sail.

Further, the traction mechanism further comprises a connecting rope and a pulley block;

One end of the connecting rope is connected with the sliding block, and the other end of the connecting rope is connected with the other side edge of the sail by winding the pulley block.

Further, the number of the traction mechanisms is two, and the traction mechanisms are respectively arranged above and below the sail;

the sliding block of the traction mechanism positioned above is connected with the upper end of the other side edge of the sail;

the sliding block of the traction mechanism positioned below is connected with the lower end of the other side edge of the sail.

Further, a sliding rail connected with the sliding block is arranged on the wind turbine body;

two ends of the sliding rail are respectively provided with a tail end limiting block;

The sliding rail is also provided with two stop limiting blocks capable of adjusting displacement along the sliding rail;

An adjustable limiting area for limiting the sliding of the sliding block is formed between the two stop limiting blocks.

Further, each airfoil blade group further comprises cast off guide rails;

the cast off guide rail is arranged on the wind turbine body;

The sail is configured to be deployable along the cast off guide rail.

Further, the number of cast off guide rails is two, and the guide rails are distributed up and down.

Further, the wind turbine body comprises a base, a rotating shaft and a rotating frame;

The rotating shaft is arranged on the base;

the rotating frame is arranged on the rotating shaft and can rotate freely around the rotating shaft;

at least two airfoil blade sets are arranged on the rotating frame and evenly distributed around the circumference of the rotating shaft.

According to the technical scheme, the lift-drag composite type self-adaptive vertical axis wind turbine is characterized in that a sail, a rolling mechanism capable of rolling the sail and a traction mechanism capable of rolling the sail are additionally arranged on the basis of the design of a double-layer airfoil blade of a traditional main airfoil blade and an aileron blade, wherein the traction mechanism capable of rolling the sail is further configured to generate centrifugal acting force opposite to traction acting force provided by the wind turbine body when the wind turbine body rotates, when the centrifugal acting force and the rolling acting force are smaller than the traction acting force, the sail is in a rolling state, and when the centrifugal acting force and the rolling acting force are larger than the traction acting force, the sail is in a rolling state, so that the self-adaptive rolling and rolling advantages of the sail are realized, the initial state and the low-rotation-speed state can be used for self-adaptively rolling the sail, the advantages of the resistance type wind turbine and the lift-force wind turbine are combined, the whole wind turbine is not of a pure resistance type or a pure lift type wind turbine can be switched according to wind speed conditions, starting performance under a low wind speed working condition is improved, and the high wind speed working condition is realized, and the high aerodynamic efficiency is not influenced.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a perspective view of a wind sail unfolding state of a lift-drag composite type self-adaptive vertical axis wind turbine;

FIG. 2 is a schematic view of a first partial structure of a wind sail deployment state of a lift-drag composite adaptive vertical axis wind turbine according to the present application;

FIG. 3 is a front view of a lift-drag composite adaptive vertical axis wind turbine wind sail;

FIG. 4 is a top view of a wind sail deployment state of a lift-drag composite adaptive vertical axis wind turbine according to the present application;

FIG. 5 is a second partial structure of the wind sail deployment state of the lift-drag composite adaptive vertical axis wind turbine provided by the application;

FIG. 6 is a perspective view of a windup sail state of a lift-drag composite adaptive vertical axis wind turbine provided by the application;

FIG. 7 is a schematic diagram illustrating the acceptance of a slider of a lift-drag composite adaptive vertical axis wind turbine according to the present application;

In the figure: 100. a wind turbine body; 101. a base; 102. a rotating frame; 103. a rotating shaft; 200. an airfoil vane set; 201. a main wing type blade; 202. aileron type blades; 203. a winding mechanism; 204. a sail; 205. a traction mechanism; 11. a winding cavity; 21. a winding rod; 22. a torque elastic member; 31. an upper connecting piece; 32. a lower connecting piece; 33. a beam rod is arranged; 34. a lower beam rod; 41. a slide block; 42. stretching the elastic member; 43. a slide rail; 44. a connecting rope; 45. a fixed pulley; 46. a pulley bracket; 47. a limit pulley; 48. a terminal limiting block; 49. a stop limiting block; 51. cast off guide rails.

Detailed Description

The following description of the embodiments of the present application will be made in detail, but not necessarily all embodiments, with reference to the accompanying drawings. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the embodiments of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the embodiments of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, interchangeably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the above terms in embodiments of the present application will be understood in detail by those of ordinary skill in the art.

The embodiment of the application discloses a lift-drag composite type self-adaptive vertical axis wind turbine.

Referring to fig. 1, an embodiment of a lift-drag composite adaptive vertical axis wind turbine provided in an embodiment of the present application includes:

At least two airfoil blade sets 200 are installed on the wind turbine body 100 and are uniformly distributed around the circumference of the rotation center line of the wind turbine body 100, and the present application specifically designs two airfoil blade sets 200, and one skilled in the art can design three, four or more as needed, without limitation.

Each airfoil blade group 200 includes a main airfoil blade 201, an aileron blade 202, a wind sail 204, a wind-up mechanism 203, and a traction mechanism 205.

The auxiliary wing type blade 202 is arranged on one side of the main wing type blade 201, which is close to the rotation center line of the wind turbine body 100; the main wing type blade 201 and the aileron type blade 202 are designed as existing wing type blades, and specific position distribution between the main wing type blade 201 and the aileron type blade 202 can refer to the existing double-layer wing type blade design, and detailed description is omitted.

The rolling mechanism 203 is mounted on the aileron type blade 202, and is connected with one side of the wind sail 204, for providing rolling force for rolling the wind sail 204; the traction mechanism 205 is mounted on the wind turbine body 100, and is connected to the other side of the sail 204, for providing traction force for deploying the sail 204; the winding mechanism 203 is configured to generate a centrifugal force against the traction force provided by itself as the blower body 100 rotates.

The resistance type wind turbine is a hemispherical wind cup type wind generator which generates torque by means of wind resistance received by the surfaces of blades. The drag type wind turbine has the advantages that the drag type blades have large direct windward area, the starting wind speed is small, and the drag type wind turbine can be started under breeze, the wind sail 204 serving as the drag type blade is additionally designed on the basis of the design of the double-layer airfoil type blades of the main airfoil type blade 201 and the aileron type blade 202 in the prior art, so that the starting performance of the wind turbine is improved, but the wake flow of the drag type blade in the upflow area greatly influences the relative wind speed in the downstream area under the high wind speed working condition, so that the torque generated by the downstream lift type blade and the drag type blade is reduced, meanwhile, the direct windward area of the drag type blade is large, and the wind resistance performance is poor under the high wind speed working condition, so that the pneumatic performance under the high wind speed working condition can be greatly influenced by directly adding the drag type blade at the inner side of the aileron type blade 202; in order to solve the problem, the application further increases the winding mechanism 203 capable of winding the sail 204 and the traction mechanism 205 capable of unwinding the sail 204, wherein the traction mechanism 205 of unwinding the sail 204 is further configured to generate centrifugal force opposite to traction force provided by the traction mechanism 205 when rotating along with the wind turbine body 100, when the centrifugal force + winding force < traction force, the sail 204 is in an unwinding state, and when the centrifugal force + winding force > traction force, the sail 204 is in a winding state, thereby realizing the self-adaptive winding and unwinding advantages of the sail 204, the initial state and the low rotation speed state can be used for adaptively unwinding the sail 204, and the high rotation speed state can be used for adaptively winding the sail 204, and the advantages of a resistance type wind turbine and a lift type wind turbine are combined, so that the whole wind turbine is not of a pure resistance type or a pure lift type, and can switch the working mode according to wind speed conditions, the starting performance under low wind speed working conditions is improved, the aerodynamic performance under high wind speed working conditions is not influenced, and wind energy is more efficiently collected.

The foregoing is a first embodiment of a lift-drag composite type adaptive vertical axis wind turbine provided by the embodiments of the present application, and the following is a second embodiment of a lift-drag composite type adaptive vertical axis wind turbine provided by the embodiments of the present application, and refer to fig. 1 to fig. 7 specifically.

Based on the scheme of the first embodiment:

Further, as shown in fig. 1, the wind turbine body 100 includes a base 101, a shaft 103, and a rotating frame 102.

The rotating shaft 103 is arranged on the base 101; the rotating frame 102 is mounted on the rotating shaft 103 and can rotate freely around the rotating shaft 103; at least two airfoil vane sets 200 are mounted on the rotating frame 102 and are evenly distributed about the circumference of the rotating shaft 103. The overall structural layout of the wind driven generator is equivalent to the main structure of the existing straight blade H-shaped wind driven generator, and therefore, the description is omitted.

Further, as shown in fig. 3, the rotating gantry 102 includes an upper link 31, a lower link 32, and at least two beam mounts.

The upper connecting piece 31 and the lower connecting piece 32 are rotatably installed on the rotating shaft 103 and are arranged up and down, and the upper connecting piece 31 and the lower connecting piece 32 are flange connecting pieces, which is not particularly limited.

At least two beam frames are connected with the upper connecting piece 31 and the lower connecting piece 32 and are uniformly distributed around the circumference of the rotating shaft 103 for fixing the wing type blade group 200 in one-to-one correspondence

Each beam comprises an upper beam 33 and a lower beam 34; the upper beam rod 33 is fixedly connected with the upper connecting piece 31; the lower beam 34 is fixedly connected with the lower connecting piece 32; the airfoil vane assembly 200 is secured to the upper beam 33 and the lower beam 34. Specifically, the main wing type blade 201 is connected to the ends of the upper beam 33 and the lower beam 34, and the aileron type blade 202 is connected between the upper beam 33 and the lower beam 34.

Further, as shown in fig. 2, a rolling cavity 11 is provided in the aileron blade 202, a communication port is provided at the front edge or inner surface of the aileron blade 202, which communicates with the rolling cavity 11 and is penetrated by the wind supply sail 204, and a rolling mechanism 203 is installed in the rolling cavity 11. Wherein the wind sail 204, if extended from the trailing edge, may cause the wind sail 204 to generate a negative torque, which is detrimental to starting, it is preferable to provide the communication port at the leading edge or the inner surface position.

The application arranges the furling cavity 11 near the front edge of the aileron type blade 202, which can provide larger space for arranging the furling cavity 11, and the corresponding front edge is provided with a communication port; through such design, can be with the incoiporation of sail 204 in the roll-up chamber 11 to avoid the sail 204 external and cause certain influence to high rotational speed operating mode, overall structure is also compacter, also can play certain guard action to the sail 204.

Further, as shown in fig. 2, for the design of the winding mechanism 203, a winding rod 21 and a torque elastic member 22 are included.

The winding rod 21 is rotatably mounted on the aileron blade 202, and is rotatably mounted in a winding chamber, for example, a winding chamber is provided.

One side of the wind sail 204 is connected to the wind-up lever 21, and a torque elastic member 22 is connected between the wind-up lever 21 and the aileron type blade 202 for providing a wind-up force for rotating the wind-up lever 21 to wind up the wind sail 204.

The torque elastic member 22 may be an existing constant torque spring/spiral spring, for example, the spiral spring may be sleeved on the winding rod 21, the inner end is fixed with the winding rod 21, the outer end is connected with the aileron type blade 202, and the spiral spring is in a deformation energy storage state when the traction mechanism 205 pulls the sail 204 to unwind the sail 204 and the winding rod 21 rotates; when the sail 204 is wound, the wrap spring recovers its shape and provides a winding force to rotate the winding rod 21, thereby recovering the sail 204. The torque spring 22 may also be a component designed based on a constant torque spring/wrap spring, without limitation.

Further, as shown in fig. 4, for the traction mechanism 205 design, a tensile elastic member 42 and a slider 41 are included.

The slider 41 is slidably mounted on the wind turbine body 100 and is connected to the other side of the sail 204.

The stretching elastic member 42 is connected between the wind turbine body 100 and the slider 41, and is used for providing a traction force for sliding the slider 41 to spread the sail 204. The tensile elastic member 42 may be a tensile spring, and one end thereof may be connected to the rotating shaft 103, and the other end thereof may be connected to the slider 41, without limitation.

Further, as shown in fig. 4, in order to enable the slider 41 in the traction mechanism 205 to better traction the sail 204, a connecting rope 44 and a pulley block are also included.

One end of the connecting rope 44 is connected with the sliding block 41, and the other end is connected with the other side of the sail 204 by a pulley block. The convenient connection between the sliding block 41 and the sail 204 can be realized through the connecting rope 44, the sliding block 41 and the sail 204 do not need to be specially designed, and the long-distance can be conveniently connected together by utilizing the soft characteristic of the connecting rope 44; meanwhile, the pulley block is utilized to better guide and limit the connecting rope 44, and also to save labor, so that the sail 204 is better pulled.

For pulley block design, as shown in fig. 5 and 6, the pulley block comprises a fixed pulley 45, a limiting pulley 47 and a pulley bracket 46.

The sliding block 41 moves radially in the direction close to the rotating shaft 103 when the traction sail 204 is unfolded, and when only the connecting rope 44 is arranged, the sliding block 41 and the sail 204 can be directly connected, and under the design, the traction mechanism 205 can be normally arranged on a beam frame where the sail 204 to be towed is located. When the pulley block is added, the direction of the connecting rope 44 is changed, and if the connecting rope is still arranged on the beam frame where the sail 204 to be towed is located, the sail 204 may not be normally towed, or the towing mode of the towing rope may be changed, and the structure may be more complicated. In this case, therefore, the application provides for the positioning of the slider 41 and of the crown block 45 of the traction mechanism 205 on the symmetrical bridge of the bridge where the sail 204 to be towed is located. As shown in fig. 4, the fixed pulleys 45 are rotatably mounted at positions close to the main wing type blades 201, the connecting ropes 44 are reversely changed around the rear direction of the fixed pulleys 45, then are distributed to the beam frame where the sails 204 to be towed are located, the limit pulleys 47 are rotatably mounted on the beam frame where the sails 204 to be towed are located through the pulley brackets 46, the number of the limit pulleys 47 is two as an example that the sliding blocks 41 are mounted at the top of the upper beam rod 33 or the bottom of the lower beam rod 34, one of the limit pulleys 47 is arranged at the top of the upper beam rod 33 or the bottom of the lower beam rod 34 and rotatably mounted through the pulley brackets 46, the other one of the limit pulleys is fixed at the bottom of the upper beam rod 33 or the top of the lower beam rod 34, the connecting ropes 44 pass through the upper beam rod 33 or the lower beam rod 34 after passing through the limit pulleys 47 at the top of the upper beam rod 33 or the bottom of the lower beam rod 34, then pass through the other limit pulley 47 at the bottom of the upper beam rod 33 or the top of the lower beam rod 34, and are connected with the sails 204.

Further, as shown in fig. 3, the traction mechanism 205 is designed to be two, which are respectively arranged above and below the sail 204, specifically, one is arranged on the upper beam 33 and the other is arranged on the lower beam 34.

The sliding block 41 of the traction mechanism 205 positioned above is connected with the upper end of the other side edge of the sail 204, and the sliding block 41 of the traction mechanism 205 positioned below is connected with the lower end of the other side edge of the sail 204; the two traction mechanisms 205 are designed to provide traction from the sail 204 from two positions so that the sail 204 is more evenly stressed and the sail 204 is better deployed.

When a traction mechanism 205 is configured, in order to better spread the sail 204, the other side edge of the sail 204 may be connected to a fixing rod, and then the traction mechanism 205 is connected to the fixing rod, so as to traction the sail 204 by driving the fixing rod to move, which is not particularly limited.

Further, as shown in fig. 4, the wind turbine body 100 is provided with a sliding rail 43 connected with the sliding block 41, and the specific matching between the sliding rail 43 and the sliding block 41 is designed in the prior art, which is not described in detail.

The two ends of the sliding rail 43 are respectively provided with the tail end limiting blocks 48, and the tail end limiting blocks 48 can be fastened on the upper beam rod 33 or the lower beam rod 34 of the wind turbine body 100 through screws, so that the disassembly is convenient, and the maintenance of the sliding block 41 is more convenient; the end stop 48 may limit the maximum travel range of the slider 41.

The slide rail 43 is also provided with two stop limiting blocks 49 capable of adjusting displacement along the slide rail 43, and an adjustable limiting area for limiting the sliding of the sliding block 41 is formed between the two stop limiting blocks 49. The size of the limit area can be changed by adjusting the displacement of at least one of the stop limiting blocks 49, so that the movable range of the sliding block 41 is changed, the traction effect on the sail 204 is changed, and the wind speed can be changed and adjusted according to the local wind speed condition, so that the wind speed control device is better in applicability.

The sliding rail 43 may be a grooved rail structure, the stop stopper 49 is slidably mounted in the sliding rail 43, a threaded hole penetrating the sliding rail 43 is formed in the stop stopper 49, a fastening screw (not shown) in threaded fit is inserted in the threaded hole, the stop slider 41 can be fixed by screwing the fastening screw until one end of the fastening screw abuts against the bottom of the sliding rail 43, and the stop stopper 49 can be freely slid by screwing the fastening screw until one end of the fastening screw is separated from the bottom of the sliding rail 43.

Further, as shown in fig. 5 and 6, each airfoil vane assembly 200 further includes cast off guide rails 51, cast off guide rails 51 mounted to the wind turbine body 100, and the sail 204 is configured to be deployable along the cast off guide rails 51. The cast off guide rail 51 is configured to guide and shape the deployed shape of the sail 204, and the cast off guide rail 51 can be specifically designed to be arc-shaped, so that the deployed sail 204 is arc-shaped accordingly, and wind energy is better collected.

Further, cast off of the rails 51 are two and are vertically disposed to provide a better guiding and shaping action for the deployed sail 204.

As shown in fig. 7, when the slider 41 is attached to the innermost one of the stopper stoppers 49:

the P bullet is more than or equal to P ions and P twists;

When the slider 41 is attached to the outermost stopper 49, at this time:

p spring is less than or equal to P ion and P torsion;

The spring P is the pulling force of the tensile elastic member 42 applied to the slider 41, the centrifugal force generated by the rotation of the wind turbine body 100 applied to the slider 41, and the twisting force P is the winding force of the torque elastic member 22 applied to the slider 41.

Pbullet=k1 (Ri-x);

wherein k1 is the elastic coefficient of the tensile elastic member 42, ri is the displacement of the slider 41, wherein R1 is the minimum displacement, R2 is the maximum displacement, and x is the deformation amount of the tensile elastic member 42;

P-ion = m Ri w;

wherein m is the mass of the sliding block 41 and the rotating speed of the w wind turbine body 100;

pbullet= (k2×Φ)/r;

where k2 is the elastic coefficient of the torque elastic member 22, φ is the deformation angle of the torque elastic member 22, and r is the self-radius of the torque elastic member 22.

Taking a stop limiting block 49 attached to the inner side of the initial sliding block 41 as an example, along with gradual lifting of the wind speed w, the distance P is larger and larger, and when P bullet < P distance +p torsion:

The slider 41 gradually moves toward the outer stop stopper 49, and stops moving when moving to the stop stopper 49 attached to the outer side, and this process is the wind-up process of the sail 204.

When the wind speed is smaller gradually, the P-distance is correspondingly reduced, and when P-spring is larger than P-distance and P-torque, the sliding block 41 gradually moves towards the inner stop limiting block 49, and stops moving when the sliding block moves to the stop limiting block 49 attached to the inner side, and the process is a sail 204 unfolding process.

The foregoing describes a lift-drag composite type adaptive vertical axis wind turbine provided by the present application in detail, and those skilled in the art will appreciate that the scope of the embodiments of the present application may be modified according to the concepts of the embodiments of the present application.

Claims (10)

1. The lift-drag composite type self-adaptive vertical axis wind turbine is characterized by comprising a wind turbine body (100) and at least two airfoil blade groups (200);

At least two airfoil blade groups (200) are arranged on the wind turbine body (100) and are uniformly distributed around the circumference of the rotation center line of the wind turbine body (100);

Each airfoil blade group (200) comprises a main airfoil blade (201), an aileron blade (202), a sail (204), a rolling mechanism (203) and a traction mechanism (205);

The aileron type blade (202) is arranged on one side of the main wing type blade (201) close to the rotation center line of the wind turbine body (100);

The rolling mechanism (203) is arranged on the aileron type blade (202) and connected with one side of the sail (204) for providing rolling force for rolling the sail (204);

the traction mechanism (205) is arranged on the wind turbine body (100) and connected with the other side edge of the sail (204) for providing traction force for unfolding the sail (204);

The winding mechanism (203) is configured to generate a centrifugal force opposite to a traction force provided by itself when rotating with the wind turbine body (100).

2. The lift-drag composite type self-adaptive vertical axis wind turbine as claimed in claim 1, wherein a furling cavity (11) is arranged in the aileron type blade (202);

The front edge or the inner surface of the aileron type blade (202) is provided with a communication port which is communicated with the furling cavity (11) and is used for the sail (204) to pass through;

The winding mechanism (203) is installed in the winding cavity (11).

3. A lift-drag composite adaptive vertical axis wind turbine according to claim 1, characterized in that the winding mechanism (203) comprises a winding rod (21) and a torque elastic member (22);

the rolling rod (21) is rotatably arranged on the aileron type blade (202);

one side edge of the sail (204) is connected with the winding rod (21);

The torque elastic piece (22) is connected between the rolling rod (21) and the aileron type blade (202) and is used for providing the rolling action force for rotating the rolling rod (21) so as to roll the sail (204).

4. A lift-drag composite adaptive vertical axis wind turbine according to claim 1, wherein the traction mechanism (205) comprises a tensile spring (42) and a slider (41);

the sliding block (41) is slidably arranged on the wind turbine body (100) and is connected with the other side edge of the sail (204);

The stretching elastic piece (42) is connected between the wind turbine body (100) and the sliding block (41) and is used for providing the traction force for sliding the sliding block (41) so as to spread the sail (204).

5. The lift-drag composite adaptive vertical axis wind turbine of claim 4, wherein said traction mechanism (205) further comprises a connecting rope (44) and a pulley block;

one end of the connecting rope (44) is connected with the sliding block (41), and the other end of the connecting rope is connected with the other side edge of the sail (204) through the pulley block.

6. The lift-drag composite type self-adaptive vertical axis wind turbine as claimed in claim 4, wherein the number of the traction mechanisms (205) is two, and the traction mechanisms are respectively arranged above and below the sail (204);

The sliding block (41) of the traction mechanism (205) positioned above is connected with the upper end of the other side edge of the sail (204);

the sliding block (41) of the traction mechanism (205) positioned below is connected with the lower end of the other side edge of the sail (204).

7. The lift-drag composite type self-adaptive vertical axis wind turbine as claimed in claim 4, wherein a sliding rail (43) connected with the sliding block (41) is arranged on the wind turbine body (100);

Two ends of the sliding rail (43) are respectively provided with a tail end limiting block (48);

Two stop limiting blocks (49) capable of adjusting displacement along the sliding rail (43) are further arranged on the sliding rail (43);

An adjustable limiting area for limiting the sliding of the sliding block (41) is formed between the two stop limiting blocks (49).

8. The lift-drag composite adaptive vertical axis wind turbine of claim 1, wherein each of said airfoil blade sets (200) further comprises cast off guide rails (51);

The cast off guide rail (51) is arranged on the wind turbine body (100);

the sail (204) is configured to be deployable along the cast off guide rail (51).

9. The lift-drag composite type self-adaptive vertical axis wind turbine as claimed in claim 8, wherein the number of cast off guide rails (51) is two and distributed up and down.

10. The lift-drag composite type self-adaptive vertical axis wind turbine according to claim 1, wherein the wind turbine body (100) comprises a base (101), a rotating shaft (103) and a rotating frame (102);

the rotating shaft (103) is arranged on the base (101);

the rotating frame (102) is arranged on the rotating shaft (103) and can freely rotate around the rotating shaft (103);

At least two airfoil blade sets (200) are mounted on the rotating frame (102) and are uniformly distributed around the circumference of the rotating shaft (103).