CN115492721A - Wind driven generator with wind resistance reducing blades - Google Patents

Abstract

The invention relates to a wind power generator with blades for reducing wind resistance, comprising: a tower, a nacelle, a generator, a speed limit stop device, an electric folding device, airfoil blades, and a vortex generator; the tower is vertically fixed on the ground , the nacelle is fixed on the tower; the generator is arranged in the nacelle, and the shaft of the generator runs through the nacelle, the speed limiting stop device is connected with the shaft of the generator, and the airfoil The blade is fixed on the rotating shaft of the generator through the electric folding device, and the tail of the airfoil blade is fixedly connected with the vortex generator. The invention can reduce the blade resistance through the airfoil blade and the vortex generator, increase the speed of the blade at low wind speed, and can also use the speed limit stop device to limit and brake the speed of the wind blade when the speed exceeds the design speed. Through the electric folding device, the blades are folded when the wind speed is high, so as to protect the wind power generator.

Description

A kind of wind power generator with wind resistance reducing blade

technical field

The invention relates to the technical field of wind power generation, in particular to a wind power generator with blades for reducing wind resistance.

Background technique

Wind power generation is a power machine that converts wind energy into mechanical energy, while wind power generators are electrical equipment that use wind energy to drive blades to rotate and finally output alternating current, which has a good application prospect.

The power generated by the wind turbine is proportional to the swept area of the wind rotor, and in the case of the same swept area, the faster the blade rotates, the greater the power generation, so the three-bladed wind turbine is widely used. However, the current wind resistance problem of the three-bladed wind turbine and how to make the blades rotate faster under the condition of limited wind speed have not been well resolved. Therefore, on the basis of the existing wind turbine blades, how to reduce the Wind resistance of the blades and increasing the rotational speed of the blades are urgent problems to be solved by those skilled in the art.

Contents of the invention

In view of this, the present invention provides a wind generator with blades for reducing wind resistance.

The invention provides a wind power generator with a blade for reducing wind resistance, comprising: a tower, a nacelle, a generator, an airfoil blade, and a vortex generator, wherein:

The tower is vertically fixed on the ground, the nacelle is fixed on the top of the tower, the generator is fixed in the nacelle, and the front end of the generator rotating shaft passes through the front end of the nacelle, and the multi-piece The airfoil blades form a circular array along the axis of the generator shaft and are installed on the shaft wall at the exit end thereof, and the vortex generator is fixed at the trailing edge of the airfoil blades.

In some embodiments of the present invention, a speed limit stop device is also included, including: a temperature sensor, an electromagnetic retarding mechanism, an electromagnetic friction mechanism and a controller;

Preferably, the generator is a two-shaft generator, and the two generator shafts are divided into the front shaft of the generator shaft and the rear shaft of the generator shaft; Type blades are installed on the shaft wall of the front shaft of the generator shaft;

Preferably, the temperature sensor is fixedly arranged on the inner wall of the nacelle close to the generator;

Preferably, the electromagnetic retarding mechanism is fixedly arranged on the inner wall of the tail of the nacelle, the controller can control the operation of the electromagnetic retarding mechanism according to the temperature sensor data, and the controller is also connected with the electromagnetic friction mechanism Electrically connected, the controller can control the electromagnetic friction mechanism to work according to the working time of the electromagnetic retarding mechanism;

In some embodiments of the present invention, the electromagnetic retarding mechanism includes a fixed bracket, a stator coil, and a rotor. A rotor hole is provided in the middle of the fixed bracket, and is sleeved on the rear shaft of the generator shaft through the rotor hole. outside, and the end is fixed on the inner wall of the nacelle, and a coil cavity is provided inside the side wall, the stator coil is installed in the coil cavity, and the rotor is sheathed and fixedly connected to the rear shaft of the generator shaft above, it can rotate in the rotor hole driven by the rear shaft of the generator shaft;

In some embodiments of the present invention, the electromagnetic friction mechanism includes: an electromagnetic block, a brake plate, a return spring, and a blocking plate; an escape hole is opened in the middle of the electromagnetic block, and it is sleeved on the rear shaft of the generator shaft. There is a gap between the penetrating end and the shaft wall of the rear shaft of the generator shaft, and is fixed on the outer wall of the nacelle, and the brake plate is slidably connected to the rear shaft of the generator shaft through slide rails , opposite to the electromagnetic block, the brake piece slides axially along the rear shaft of the generator shaft, the return spring is sleeved on the rear shaft of the generator shaft, and is located between the electromagnetic block and the Between the brake stop pieces, corresponding to the avoidance hole, the brake stop pieces can be reset by the return spring, and the blocking piece is fixed on the passing end of the rear shaft of the generator shaft to limit the The sliding distance between the brake plate and the electromagnetic block; the controller is fixed in the nacelle and is electrically connected to the temperature sensor, the stator coil and the electromagnetic block respectively. , when the heat generated by the generator is too high, the temperature sensor will transmit a signal to the controller, and the controller controls the stator coil to be energized to generate a magnetic field. At this time, the rotor rotates and cuts the magnetic field to generate Inhibit the electromagnetic force of the rotation of the rear shaft of the generator shaft and reduce the rotation speed of the rear shaft of the generator shaft; when the stator coil works for a certain period of time, the controller transmits the signal to the electromagnetic block, and the The electromagnetic block generates magnetic force, and the brake piece moves to the direction of the electromagnetic block under the action of the magnetic force, and sticks to it, and the two rub against each other to stop the rotation of the generator shaft; when the temperature drops to a certain value , the temperature sensor transmits the signal to the controller, the controller controls the stator coil and the electromagnetic block to stop working, and the rear shaft of the generator shaft resumes rotation;

In an embodiment of the present invention, an electric opening and closing device is also included, and the electric opening and closing device includes an electro-hydraulic push rod, an articulated joint, and a folder;

Preferably, the two movable leaves of the folder are respectively fixed to the exit end of the rear shaft of the generator shaft and the inner wall of the airfoil blade;

Preferably, both ends of the electro-hydraulic push rod are connected with articulated joints, and are electrically connected with the controller, and the two articulated joints are respectively fixed on the exit end of the rear shaft of the generator shaft and the corresponding On the inner wall of the airfoil blade, when the electro-hydraulic push rod is stretched, it can drive the airfoil blade to swing with the folder;

Preferably, when the airfoil blades stop working, the controller will control the electro-hydraulic push rod to shrink, so that the airfoil blades are folded toward the cabin, and when the airfoil blades start working, The controller controls the extension of the electro-hydraulic push rod so that the airfoil blade returns to its original position;

Preferably, friction surfaces are respectively provided on the corresponding working surfaces of the brake plate and the electromagnetic block;

Preferably, at the connection of the airfoil blades, a cut corner is provided near the rotating shaft of the generator, and the shape of the cut corner matches the shape of the outer wall of the front end of the nacelle. The avoidance opening corresponding to the hydraulic push rod;

Preferably, when the tangent angle of the airfoil blade fits the nacelle, the electro-hydraulic push rod stops working, which is the maximum angle of the airfoil blade retraction at this time;

Preferably, the airfoil blade is fixedly connected to the movable leaf of the folder by bolts;

Preferably, a heat insulating layer is provided between the friction surface of the electromagnetic block and the surface of the electromagnetic block;

Preferably, the engine room is provided with a heat dissipation port above the installation position of the generator;

The present invention provides a wind generator with blades for reducing wind resistance. The airfoil shape is selected as an aircraft airfoil, which can effectively reduce the wind resistance of the blades. By installing a vortex generator at the tail of the airfoil blades, the premature occurrence of airflow can be avoided. Separation affects the lift force of the airfoil blades, which in turn reduces the speed of the airfoil blades. The installation of vortex generators will further reduce the resistance of the airfoil blades, which solves the wind resistance problem of the current wind turbine blades and also improves the airfoil in the case of limited wind speed. down, making the blades turn faster.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solution of the present invention will be described in further detail below with reference to the drawings and embodiments.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is a structural schematic diagram of the present invention.

Figure 2 is a schematic diagram of the speed limiting stop device.

Fig. 3 is a schematic structural diagram of the electric opening and closing device.

In the figure: 1. Tower; 2. Engine room; 3. Generator; 4. Generator shaft; 5. Airfoil blade; 6. Vortex generator; 7. Temperature sensor; 8. Controller; 9. Electromagnetic buffer 10. Electromagnetic friction mechanism; 11. Electric opening and closing device; 15. Speed limit stop device; 16. Cooling port; 18. Bolt; 41. Front shaft of generator shaft; 42. Rear shaft of generator shaft; Fixed bracket; 92, stator coil; 93, rotor; 101, electromagnetic block; 102, brake stop piece; 103, return spring; 104, stop piece; 112, electrohydraulic push rod;

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of this application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying References to devices or elements must have a particular orientation, be constructed, and operate in a particular orientation and therefore should not be construed as limiting the application.

The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present application, unless otherwise specified, "plurality" means two or more.

In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.

The embodiment of the present invention discloses a wind power generator with windage-reducing blades, including: a tower 1, a nacelle 2, a generator 3, an airfoil blade 5, and a vortex generator 6, wherein:

The tower 1 is vertically fixed on the ground, the nacelle 2 is fixed on the top of the tower 1, the generator 3 is fixed in the nacelle 2, the front end of the generator rotating shaft 4 passes out along the front end of the nacelle 2, and the multiple airfoil blades 5 generate power along the The axis of the mechanical shaft 4 is in a circular array and is installed on the shaft wall at its passing end, and the vortex generator 6 is fixed at the trailing edge of the airfoil blade 5 .

The airfoil shape of this embodiment is selected as an aircraft airfoil, which can effectively reduce the resistance of the blade wind. By installing a vortex generator 6 at the tail of the airfoil blade 5, it can avoid the premature separation of the airflow, which affects the lift of the airfoil blade 5, and then The speed of the airfoil blade 5 is reduced, and the installation of the vortex generator 6 will further reduce the resistance of the airfoil blade 5, which solves the wind resistance problem of the current wind turbine blade, and also improves the blade rotation speed under the condition of limited wind speed. faster.

In order to prevent the generator 3 from overheating due to excessive wind speed and causing the generator 3 to overheat, thereby affecting the service life of the generator 3, on the basis of embodiment 1, embodiment 2 is also included, and in embodiment 2, Including a speed limit stop device 15, including: a temperature sensor 7, an electromagnetic retarding mechanism 9, an electromagnetic friction mechanism 10 and a controller 8;

Wherein, the generator 3 is a biaxial generator, and its two generator shafts 4 are divided into a front shaft 41 of the generator shaft and a rear shaft 42 of the generator shaft; 5 installed on the shaft wall of the front shaft 41 of the generator shaft;

A heat dissipation port 16 is provided above the installation position of the engine room 2 corresponding to the generator 3, and the temperature sensor 7 is fixedly arranged on the inner wall of the engine room 2 close to the position of the generator 3;

The electromagnetic retarding mechanism 9 is fixedly arranged on the inner wall of the tail of the cabin 2, and the controller 8 can control the electromagnetic retarding mechanism 9 to work according to the data of the temperature sensor 7, and the controller 8 is also electrically connected with the electromagnetic friction mechanism 10. The working hours of the speed mechanism 9 control the work of the electromagnetic friction mechanism 10;

The electromagnetic retarding mechanism 9 comprises a fixed support 91, a stator coil 92 and a rotor 93. The middle part of the fixed support 91 is provided with a rotor hole, which is sleeved on the outside of the rear shaft 42 of the generator rotating shaft through the rotor hole, and the end is connected to the inner wall of the nacelle 2. fixed on the upper side wall, a coil cavity is provided inside the side wall, the stator coil 92 is installed in the coil cavity, the rotor 93 is sleeved and fixedly connected to the rear shaft 42 of the generator shaft, and can be driven by the rear shaft 42 of the generator shaft in the rotor hole internal rotation;

The electromagnetic friction mechanism 10 comprises: an electromagnetic block 101, a stop piece 102, a return spring 103, and a blocking plate 104; the middle part of the electromagnetic block 101 has an avoidance hole, and is sleeved on the passing end of the rear shaft 42 of the generator shaft, and is connected with the generator There is a gap between the shaft walls of the rear shaft 42 of the rotating shaft, and it is fixed on the outer wall of the nacelle 2. The brake stop piece 402 is slidably connected on the generator shaft rear shaft 42 by a slide rail, and is opposite to the electromagnetic block 101. The brake stop piece 102 Sliding axially along the rear shaft 42 of the generator shaft, the return spring 103 is sleeved on the rear shaft 42 of the generator shaft, and is located between the electromagnetic block 101 and the brake plate 102, corresponding to the avoidance hole, and can be paired by the return spring 103. Brake stop piece 102 resets, and catch piece 104 is fixed on the passing end of generator rotating shaft rear axle 42, limits the sliding distance between brake stop piece 102 and electromagnetic block 101; Controller 8 is fixed in the nacelle 2, and respectively with The temperature sensor 7, the stator coil 92 and the electromagnetic block 101 are electrically connected;

When the wind speed is low and the generator 3 is working, a small amount of heat generated can be discharged through the cooling vent 16 above the generator 3; when the wind speed is too high, the cooling vent 16 above the generator 3 cannot remove a large amount of heat in time The temperature sensor 7 will play a role, the microprocessor in the temperature sensor 7 sets a maximum temperature, when the temperature of the generator 3 is higher than the maximum temperature, the temperature sensor 7 will transmit the signal to the controller 8, and the controller 8 Control the energization of the stator coil 92 to generate a magnetic field. At this time, the rotor 93 rotates and cuts the magnetic field, produces an electromagnetic force that suppresses the rotation of the rear shaft 42 of the generator shaft, and reduces the rotational speed of the rear shaft 42 of the generator shaft; when the stator coil 92 works for a certain period of time, the control The device 8 transmits the signal to the electromagnetic block 101, and the electromagnetic block 101 generates a magnetic force, and the brake block 102 moves to the direction of the electromagnetic block 101 under the action of the magnetic force, and fits with it, and the corresponding working surface of the brake block 102 and the electromagnetic block 101 There are friction surfaces on the top respectively, and the two rub against each other, so that the generator shaft 4 stops running; when the temperature drops to the normal temperature value set by the microprocessor, the temperature sensor 7 transmits the signal to the controller 8, and the controller 8 controls the stator The coil 92 and the electromagnetic block 101 stop working, and the rear shaft 42 of the generator rotating shaft resumes rotation.

The speed-limiting stop device 15 of this embodiment can effectively decelerate the generator shaft 4 to prevent the generation of a large amount of heat due to the excessive speed of the generator shaft 4 and reduce the service life of the wind generator.

When the wind-driven generator stops rotating, the wind-driven generator airfoil blade 5 is still facing the wind, so it will produce the power to make the wind-driven generator rotate, and at this moment, the wind-driven generator airfoil blade 5 bears a large force, which is harmful to wind power generation. Machine life has a great impact, so in order to make the airfoil blade 5 of the wind power generator, when the wind power generator stops working, bear as little force as possible, on the basis of embodiment 1, increase embodiment 3, in this embodiment An electric opening and closing device 11 is provided in the middle, and the electric opening and closing device 11 includes an electrohydraulic push rod 112, an articulated joint 113, and a folder 115;

The two movable pages of the folder 115 are respectively fixed with the piercing end of the rear shaft 42 of the generator shaft and the inner wall of the airfoil blade 5, and the movable leaf of the folder 115 is fixed with the airfoil blade 5 by bolts 18, so that the airfoil blade can be realized. 5 folds;

Both ends of the electro-hydraulic push rod 112 are connected with articulated joints 113, and are electrically connected with the controller 8. The two articulated joints 113 are respectively fixed on the exit end of the rear shaft 42 of the generator shaft and the inner wall of the corresponding airfoil blade 5 Above, when the electrohydraulic push rod 112 stretches, it can drive the airfoil blade 5 to swing with the folder 115 .

When the airfoil blade 5 stops working, the controller 8 will control the electrohydraulic push rod 112 to shrink, so that the airfoil blade 5 is folded toward the nacelle 2. When the airfoil blade 5 starts to work, the controller 8 controls the electrohydraulic push rod The rod 112 is extended so that the airfoil blade 5 returns to its original position.

In order to make the folding angle of the airfoil blade 5 the largest, at the joint of the airfoil blade 5, a cut corner is provided near the generator shaft 4, and the shape of the cut corner matches the shape of the outer wall of the front end of the nacelle 2. The avoidance opening corresponding to the electrohydraulic pushrod 112 has a size that only allows the electrohydraulic pushrod 112 to move. This design can prevent the vortex from being generated behind the airfoil blade 5 due to the large opening and increase wind resistance.

By adding Embodiment 3 on the basis of Embodiment 1, Embodiment 3 can realize the opening and closing of the airfoil blade 5, and when the generator shaft stops rotating, it can be folded toward the direction of the nacelle 2, reducing the size of the wing as much as possible. The windward area of the airfoil blade 5 reduces the burden of the speed limit stop device. When the generator shaft re-rotates, the airfoil blade 5 can return to its original position and face the wind with the largest area, realizing the automatic operation of the airfoil blade 5 of the wind power generator. Opening and closing.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the related information, please refer to the description of the method part.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. A wind turbine with wind resistance reducing blades, comprising: tower, cabin, generator, airfoil blade, vortex generator, wherein:

the tower is vertically fixed on the ground, the engine room is fixed at the top end of the tower, the generator is fixed in the engine room, the front end of a generator rotating shaft of the generator penetrates out of the front end of the engine room, the airfoil blades are arranged in a circumferential array along the axis of the generator rotating shaft and are mounted on the shaft wall of the penetrating end of the airfoil blades, and the vortex generator is fixed at the rear edge of the airfoil blades.

2. The wind power generator with wind resistance reducing blades according to claim 1, further comprising a speed-limiting stop device, wherein the speed-limiting stop device comprises: the device comprises a temperature sensor, an electromagnetic retarding mechanism, an electromagnetic friction mechanism and a controller;

the generator is a double-shaft generator, and two generator rotating shafts of the generator are divided into a generator rotating shaft front shaft and a generator rotating shaft rear shaft; the wing blades penetrate out of the front end and the rear end of the engine room respectively, and are mounted on the shaft wall of the front shaft of the rotating shaft of the generator;

the temperature sensor is fixedly arranged on the inner wall of the cabin close to the generator;

the electromagnetic retarding mechanism is fixedly arranged on the inner wall of the tail part of the engine room, the controller can control the electromagnetic retarding mechanism to work according to the data of the temperature sensor, the controller is also electrically connected with the electromagnetic friction mechanism, and the controller can control the electromagnetic friction mechanism to work according to the working duration of the electromagnetic retarding mechanism;

the electromagnetic retarding mechanism comprises a fixed support, a stator coil and a rotor, wherein a rotor hole is formed in the middle of the fixed support, the rotor hole is sleeved outside the rear shaft of the rotating shaft of the generator, the end part of the rotor hole is fixed to the inner wall of the engine room, a coil cavity is formed in the side wall of the engine room, the stator coil is installed in the coil cavity, and the rotor sleeve is fixedly connected to the rear shaft of the rotating shaft of the generator and can rotate in the rotor hole under the driving of the rear shaft of the rotating shaft of the generator;

the electromagnetic friction mechanism includes: the brake device comprises an electromagnetic block, a brake stopping sheet, a return spring and a blocking sheet; the middle part of the electromagnetic block is provided with an avoidance hole, the electromagnetic block is sleeved at the penetrating end of the rear shaft of the generator rotating shaft, a gap is reserved between the electromagnetic block and the shaft wall of the rear shaft of the generator rotating shaft and fixed on the outer wall of the engine room, the brake sheet is connected on the rear shaft of the generator rotating shaft in a sliding mode through a sliding rail and is opposite to the electromagnetic block, the brake sheet axially slides along the rear shaft of the generator rotating shaft, the reset spring is sleeved on the rear shaft of the generator rotating shaft and is positioned between the electromagnetic block and the brake sheet and corresponds to the avoidance hole, the brake sheet can be reset through the reset spring, the blocking sheet is fixed at the penetrating end of the rear shaft of the generator rotating shaft, and the sliding distance between the brake sheet and the electromagnetic block is limited; the controller is fixed in the cabin and is respectively connected with the temperature sensor, the stator coil and the electromagnetic block electrically, when the wind speed is high and the heat generated by the generator is overhigh, the temperature sensor can transmit signals to the controller, the controller controls the stator coil to be electrified to generate a magnetic field, at the moment, the rotor rotates to cut the magnetic field, electromagnetic force for inhibiting the rotation of the rear shaft of the rotating shaft of the generator is generated, and the rotating speed of the rear shaft of the rotating shaft of the generator is reduced; when the stator coil works for a certain time, the controller transmits a signal to the electromagnetic block, the electromagnetic block generates magnetic force, the brake stopping sheet moves towards the direction of the electromagnetic block under the action of the magnetic force and is attached to the electromagnetic block, and the brake stopping sheet and the electromagnetic block rub against each other to stop the rotation of the rotating shaft of the generator; when the temperature is reduced to a certain value, the temperature sensor transmits a signal to the controller, the controller controls the stator coil and the electromagnetic block to stop working, and the rear shaft of the rotating shaft of the generator recovers rotation.

3. The wind driven generator with the wind resistance reducing blade is characterized by further comprising an electric opening and closing device, wherein the electric opening and closing device comprises an electric hydraulic push rod, a hinged joint and a folder;

two movable leaves of the folder are respectively fixed with the penetrating end of the rear shaft of the rotating shaft of the generator and the inner wall of the wing-shaped blade;

the two ends of the electric hydraulic push rod are both connected with hinged joints and are electrically connected with the controller, the two hinged joints are respectively fixed at the penetrating end of the rear shaft of the rotating shaft of the generator and on the inner wall of the corresponding wing-shaped blade, and the wing-shaped blade can be driven to swing along with the folder when the electric hydraulic push rod stretches;

when the wing blade stops working, the controller controls the electric hydraulic push rod to contract, so that the wing blade is folded towards the cabin direction, and when the wing blade starts working, the controller controls the electric hydraulic push rod to extend, so that the wing blade returns to the original position.

4. The wind power generator with wind resistance reducing blades according to claim 2, wherein the brake pad and the corresponding working surface of the electromagnetic block are respectively provided with a friction surface.

5. The wind power generator with the blades for reducing wind resistance according to claim 3, wherein a chamfer is arranged at the position, close to the rotating shaft of the generator, of the connection of the wing-shaped blades, the shape of the chamfer is matched with that of the outer wall of the front end of the engine room, and an avoidance opening corresponding to the electric hydraulic push rod is formed in the chamfer.

6. The wind power generator with blades for reducing wind resistance according to claim 5, wherein when the opposite cutting angles of the wing blades are fitted to the nacelle, the electro-hydraulic push rod stops working, and the maximum angle at which the wing blades are folded is obtained.

7. The wind power generator with wind resistance reducing blades according to claim 3, wherein the wing-shaped blades are fixedly connected to the folder movable leaf through bolts.

8. The wind power generator with the wind resistance reducing blade according to claim 2, wherein a heat insulation layer is arranged between the friction surface of the electromagnetic block and the surface of the electromagnetic block.

9. The wind power generator with wind resistance reducing blades according to claim 1, wherein a heat dissipation opening is formed in the position, above the installation position of the generator, of the engine room.

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