CN204402762U - There is the wind-driven generator of master end driftage protection transfer bar mechanism - Google Patents

Abstract

A kind of wind-driven generator, comprises wind wheel, generator, machine base and tail rudder device, and wherein tail rudder device comprises tail boom and tail rudder plate, is characterized in that this wind-driven generator also includes a push rod that provides active side yaw protection mechanism, the push rod mechanism includes: an electric push rod that provides driving thrust, and a roller-link mechanism that drives the tail rudder device, which acts on the tail rudder device, and is driven by the electric push rod to make the tail rudder device Pivotably movable between placing the rudder device in a direction substantially perpendicular to the plane of the wind rotor, and/or making the rudder device in a direction substantially parallel to the plane of the wind rotor. On the basis of using eccentric installation to realize the structure of the passive lateral protection tail rudder device, the utility model adds an active lateral protection push rod drive mechanism, which ensures that the wind wheel can passively swing the head to escape from the main wind direction under the condition of strong wind, and makes the tail rudder smoothly Extending along the main wind direction, the speed of the fan decreases instead of increasing with the increase of wind speed, and realizes the passive side deviation plus intelligent active side deviation and double side deviation compensation mechanism, which makes the unit more reliable in actual operation.

Description

Wind turbine with push rod mechanism for active side yaw protection

technical field

The utility model relates to a small wind power generator with an active side yaw protection mechanism.

Background technique

With the rapid development of social economy, the problem of environmental pollution is becoming more and more serious, and people's demand for clean energy is increasing day by day. It is imperative to develop new, green and clean energy. Wind energy is a clean and renewable energy, so the development and application of wind power generators have attracted more and more attention from all over the world. Since the rise in the 1980s, the technical level of using wind energy to generate electricity has become more and more mature after more than 20 years of development. The rational use of non-polluting wind energy has become an important way to obtain green energy.

Small wind turbines play a pivotal role in the utilization of wind energy. However, due to their high manufacturing costs and relatively few safety protection measures, traditional small wind turbines have not yet been widely promoted. As known in the industry, due to manufacturing cost considerations, small wind turbines of 5kw to 20kw are not equipped with automatic yaw devices such as geared motors like medium and large wind turbines, and most of them are models with tail rudder devices.

For example, the small wind power generator shown in FIG. 1 includes a wind rotor 10 installed on the hub, a generator 20 , a base 30 , and a rudder device 40 . Wherein, the structure of the frame 30 can be shown in each view with reference to Fig. 2A to Fig. 2C, it is arranged on the front side of the frame 30, and the circular connection surface 32 around the generator installation hole 31 is connected with the generator by a plurality of fixing pieces. The connecting faces on the rear side of 20 are in contact with each other, and the mounting hole 33 provided at the bottom of the base 30 is horizontally and rotatably mounted on the top of the tower 60 through a rotary mechanism 50 . FIG. 2A is a three-dimensional schematic view of the base 30 from the front side connected to the generator; FIG. 2B is a bottom plan view of the base 30; FIG. 2C is a three-dimensional schematic view of the base 30 from the rear side connected to the rudder.

The tail rudder device 40 includes a tail boom 41 and a tail rudder plate 42 , and the front end of the tail boom 41 is rotatably connected to the machine base 30 through a fixing seat 43 arranged on the rear side of the machine base 30 . Due to the setting of the fixing seat 43, the rotating shaft H of the tail beam 41 is installed with a specific roll and caster angle, so that the gravity acting on the tail beam 41 and the tail rudder plate 42 always gives the tail rudder device 40 a downward direction. Rotation gravity. The tail rudder plate 42 is always in the downwind position under the action of the wind force. When the wind is light, the extension direction of the tail beam 41 and the tail rudder plate 42 is perpendicular to the plane of the wind wheel, that is, the wind direction is perpendicular to the plane of the wind wheel, and the wind wheel can move to the maximum extent. Absorb wind energy, as shown in Figures 3A and 3B; when there is a strong wind, the wind force overcomes the gravity moment, so that the extension direction of the tail beam 41 and the tail rudder plate 42 forms a certain angle with the plane of the wind wheel, that is, the wind direction is not perpendicular to the plane of the wind wheel , the ability of the wind rotor to absorb wind energy is weakened, as shown in Figures 4A and 4B; when the wind is super strong, the wind force overcomes the gravity moment, so that the tail beam 41 and the tail rudder plate 42 are completely parallel to the plane of the wind rotor, that is, the wind direction is parallel to the plane of the wind rotor , The ability to absorb wind energy is basically eliminated, and the purpose of protecting the fan is achieved. However, since the tail rudder device 40 is installed at a specific installation angle, its deflection gravity moment is difficult to be set to the optimal parameter, and the wind force has characteristics such as instantaneous level and sudden change in direction. 40 is difficult to achieve the purpose of automatic yaw protection.

On the other hand, due to the small size of the small wind turbines, it is impossible to add a brake mechanism inside the nacelle. Without the necessary braking measures, the blades will fail, and the entire fan will be damaged, resulting in huge economic losses.

Therefore, there is an urgent need to improve the side yaw protection structure of the small wind power generator in view of the problems existing in the above-mentioned prior art, so that the operation safety performance of the small wind power generator can be better guaranteed.

Contents of the invention

The purpose of this utility model is to provide a small wind power generator with an active side yaw protection push rod mechanism, which improves the tail rudder device with passive side yaw protection in the prior art, and only adds a small amount of cost. An active side yaw protection mechanism can better guarantee the operation safety performance of small side yaw protection wind power generators.

In order to achieve the above object, the utility model provides an improved small wind power generator, which includes: a wind wheel, a generator, a base and a tail rudder device, wherein the tail rudder device includes a tail beam and a tail rudder plate, and the machine There is a generator installation hole on the front side of the base, and the connection surface around the installation hole is connected with the connection surface on the rear side of the generator through a plurality of fixing parts. The bottom of the base is fixed on the top of the tower through a rotary mechanism. The front end of the tail beam of the rudder device is pivotally connected to the fixed bracket fixed on the rear side of the frame at a preset installation angle. In particular, the wind turbine also includes a push rod mechanism that provides active side yaw protection, The push rod mechanism includes:

An electric push rod that provides driving thrust, the electric push rod includes a fixed part and a telescopic part, the fixed part is accommodated inside the machine base and pivotally connected to a fixed seat on the inner wall of the front side of the machine base through a pin , the end of the telescopic part passes through the perforation opened on the rear side wall of the machine base, and is pivotally connected to the roller-link mechanism through a pin shaft;

A roller-link mechanism for driving the tail rudder device, comprising a connecting rod, a connecting rod pin, a connecting rod pin fixing frame and a trapezoidal roller, wherein the first end of the connecting rod is pivotally connected by the connecting rod pin On the fixed frame, the second end of the connecting rod is pivotally connected to the trapezoidal roller through a pin; and

The electric push rod drives the roller-link mechanism to rotate around the link pin according to the rotating speed of the wind wheel, so that the tail rudder device can pivotally move and remain in the first position substantially perpendicular to the direction of the wind wheel plane, and basically Between the second position in the direction parallel to the plane of the rotor.

On the basis of using eccentric installation to realize the structure of the passive lateral protection tail rudder device, the utility model adds an active lateral protection push rod drive mechanism, which ensures that the wind wheel can passively swing the head to escape from the main wind direction under the condition of strong wind, and makes the tail rudder smoothly Extending along the main wind direction, the speed of the fan decreases instead of increasing with the increase of wind speed, and realizes passive side deviation plus intelligent active side deviation and double side deviation compensation mechanism, making the unit more safe and reliable in actual operation.

Description of drawings

FIG. 1 is a perspective view of an example of a conventional small wind power generator with a rudder device.

FIG. 2A shows the base of the small wind power generator in FIG. 1 , showing a schematic perspective view of the base viewed from the front side of the base connected to the generator.

FIG. 2B shows the base of the small wind power generator in FIG. 1 , showing a bottom plan view of the base.

FIG. 2C shows the base of the small wind power generator in FIG. 1 , showing a perspective view of the base viewed from the rear side where the base is connected to the tail rudder.

3A-3B are side views and three-dimensional schematic diagrams of the tail rudder device of the small wind turbine in a natural state when the wind is light.

4A-4B are side views and three-dimensional schematic diagrams of the tail rudder device of the small wind turbine in a side-slip protection state during strong winds.

Fig. 5 is a schematic diagram of the push rod driving device in the natural state of the tail rudder device according to the example of the small wind power generator of the present invention.

Fig. 6 is a schematic diagram of a push rod driving device in a side-biased state of a tail rudder device according to an example of a small wind power generator of the present invention.

specific embodiment

The structure of the small wind power generator according to the utility model is basically similar to the above-mentioned small wind power generator of the prior art, but an active side yaw protection push rod driving mechanism is added on the basis of the existing passive side yaw. Referring to the embodiment shown in Figures 5-6, a push rod drive mechanism 70 providing active side yaw protection is added between the machine base 30 and the tail rudder device 40, realizing passive side yaw protection plus intelligent active side yaw The double side deviation compensation mechanism makes the wind turbine more safe and reliable in operation.

The structure of the small wind power generator of the present utility model is similar to the prior art in that it also includes all the main parts shown in FIGS. The improvement of the utility model lies in the added push rod mechanism 70 for active side yaw protection. The push rod mechanism 70 mainly includes an electric push rod 71 for providing driving thrust, and a roller-linkage mechanism 72 for driving the rudder device 40 to rotate around the rotation axis H.

Wherein, the electric push rod 71 is arranged in the base 30, and includes a fixed part 711 and a telescopic part 712, and the rear end of the fixed part 711 is pivotally connected to a fixed seat 713 on the inner wall of the front side of the base 30 through a pin shaft. Above, the end of the telescopic part 712 passes through the perforation provided on the rear side wall of the base 30, and is pivotally connected to the roller-linkage mechanism 72 through a pin shaft.

Wherein, the roller-link mechanism 72 mainly includes a connecting rod 721 , a connecting rod shaft 722 , a connecting rod rotating shaft fixing bracket 723 and a trapezoidal roller 724 . Wherein, the shape of the connecting rod 721 is roughly arc-shaped, its transverse section is "⊐" shape, and radially outwardly opened, and the first end of the connecting rod 721 is pivotally connected by the connecting rod shaft 722 The bracket 723 is fixed to the connecting rod shaft, and the second end of the connecting rod 721 is pivotally connected to the trapezoidal roller 724 through a pin shaft. , that is, the preset installation angle of the rotating shaft H matches. In addition, the end of the telescopic portion 712 of the electric push rod 71 is pivotally connected to the position where the second end of the connecting rod 721 is adjacent to the trapezoidal roller 724 . Thereby, described roller-linkage mechanism 72 can rotate around link rotating shaft 722 and move in: make tail rudder device 40 be in the first position of the direction substantially perpendicular to the wind wheel plane, and make tail rudder device 40 be in substantially parallel Between the second position in the direction of the plane of the wind rotor.

During the operation of the small wind power generator of the present utility model, when the control unit of the wind power generator detects that the speed of the wind wheel exceeds a certain preset threshold, the active side deflection protection push rod mechanism 70 is activated, and the electric push rod 71 moves, The telescopic part 712 of the electric push rod 71 protrudes outwards, and pushes the connecting rod 721 with the trapezoidal roller 724 to press against the end surface of the tail beam 41 of the tail rudder device 40, forcing the tail beam 41 to rotate in a direction parallel to the plane of the wind wheel . At this time, the whole tail rudder device 40 including the tail beam 41 rotates around the rotating shaft H, the telescopic part 712 of the electric push rod 71 drives the connecting rod 721 to rotate within the design range, and the connecting rod 721 rotates while carrying the trapezoidal roller 724 on the tail beam 41 The end surface of the rotator is in rotational contact, thereby completing the active lateral action. After the tail boom 41 is sideways in place, the electric push rod 71 stops moving and remains at this position. At this time, the blades of the wind rotor and the wind direction are at an angle of 90°, and the wind wheel cannot capture wind energy and slow down or even stop the fan. After the time is over, the telescopic part 712 of the electric push rod 71 retracts to the original position according to the action command sent by the control unit, and the fan 1 resumes the operation mode under the normal wind speed.

To sum up, the small wind turbine uses an eccentric installation method on the pivoting mechanism of its tail rudder device, so that the wind wheel is passively swung in a strong wind environment, deviating from the main wind direction, and the tail rudder extends along the main wind direction, reducing the speed. Instead of rising with the increase of wind speed. On the basis of the existing structure with its own passive side deviation mechanism, the utility model adds an active side deviation protection push rod drive mechanism, realizes passive side deviation plus intelligent active side deviation compensation mechanism, and makes the unit in actual operation More reliable installation.

Although the preferred specific implementation of the present invention has been described above by way of example, the protection scope of the present invention is not limited to the above description, but is defined by all technical features and equivalent technical features provided by the appended claims . Those skilled in the art can understand that any modifications and changes may still fall within the protection scope of the claims of the present invention without departing from the essence and essence taught by the present invention.

Claims (4)

1. a small-sized wind power generator (1), comprise wind wheel (10), generator (20), support (30), and tail vane device (40), wherein said tail vane device (40) comprises tail boom (41) and tail plate (42), support (30) front side is provided with generator mounting hole (31), junction surface around mounting hole (31) surrounding is docked by the junction surface of a plurality of fixed block with generator (20) rear side, the bottom of support (30) is fixed on the top of pylon (60) by single-revolution mechanism (50), tail boom (41) front end of described tail vane device (40) be articulated in the setting angle preset be installed in support (30) rear side fixed support (43) on, it is characterized in that this wind-driven generator (1) also comprises one and provides master end driftage protection transfer bar mechanism (70), described transfer bar mechanism (70) comprising:

One provides the electric pushrod (71) driving thrust, comprise a standing part (711) and a telescopic section (712), its standing part (711) rear end is articulated on a fixed base (713) of support (30) front inner wall by a bearing pin, the end of its telescopic section (712) passes from the perforation that support (30) rear sidewall is offered, and is articulated on roller-linkage mechanism (72) by a bearing pin;

Roller-the linkage mechanism (72) of one driving tail vane device (40), comprise a connecting rod (721), a link pin (722), one connecting rod fixing frame (723) and a trapezoidal roller (724), the first end of wherein said connecting rod (721) is articulated in connecting rod rotating shaft fixing frame (723) by described link pin (722), and the second end of described connecting rod (721) is by the trapezoidal roller of a bearing pin pivot joint (724); And

Described electric pushrod (71) rotates around link pin (722) according to the rotating speed driving rolls-linkage mechanism (72) of wind wheel, make tail vane device (40) movable pivotly and be held in the primary importance in the direction being substantially perpendicular to wind wheel plane, and making tail vane device (40) be between the second place in the direction being arranged essentially parallel to wind wheel plane.

2. small-sized wind power generator according to claim 1, it is characterized in that the shape of the connecting rod (721) of described roller-linkage mechanism (72) is roughly in circular arc, its lateral cross section is " " shape and radially outward opening.

3. small-sized wind power generator according to claim 1, is characterized in that the preset setting angle of the described outer side surface angle of inclination of trapezoidal roller (724) and the fixed base 43 of tail boom 41 matches.

4. small-sized wind power generator according to claim 1, is characterized in that the second end that telescopic section (712) end of described electric pushrod (71) is articulated in connecting rod (721) is close to the position of trapezoidal roller (724).