KR101235683B1

KR101235683B1 - Blade of wind power generator

Info

Publication number: KR101235683B1
Application number: KR1020090080405A
Authority: KR
Inventors: 승애림
Original assignee: 승애림
Priority date: 2009-08-28
Filing date: 2009-08-28
Publication date: 2013-02-21
Also published as: KR20110022905A

Abstract

The present invention relates to a blade variable structure of the wind turbine, the generator using wind; A main shaft connected to the generator to allow rotational power to be input; A plurality of upper connecting rods connected radially to the main shaft and rotating together; A plurality of lower connecting rods connected radially on a main shaft below the upper connecting rod and rotating together; A plurality of blades installed between the upper connecting rod and the lower connecting rod, respectively, in a state capable of rotating; A blade driving device installed on a rotation shaft of each blade to control a rotating motion; A shaft support for axially coupling the upper end of the main shaft to a rotatable state and supporting the main shaft to be perpendicular to the ground; And an observation unit installed at an upper center of the shaft support to obtain wind direction and wind speed information and to provide a control signal to the blade driving device.

According to the present invention according to the above configuration by receiving the signal of the observation unit directly by controlling the rotational movement of each blade in the blade drive device, it is possible to stably obtain the maximum amount of generation according to the natural conditions of the wind direction and wind speed, Since the structure is simple, the installation and maintenance is easy and the cost of equipment is reduced.

Description

Blade of wind power generator

The present invention relates to a blade of a wind turbine, and more particularly, to a variable structure of the blade of the wind turbine capable of actively embracing the wind blowing toward the blade.

In general, blades used in wind power generators can increase power generation efficiency only if they can actively embrace the blowing wind.

Conventionally, various types of blades have been developed to increase the wind capacity.

As an example, there has been a technique of increasing the capacity of the wind by forming the blade of the blade to be swollen by the wind, and before that, there has been an effort to increase the capacity by changing the shape and structure of the blade.

However, the techniques developed in the past have been limited in increasing the blade's capacity in this way because the blade is only blown in place.

1 is a perspective view showing a vertical wind power generator according to the prior art, Figure 2 is a plan view schematically showing the vertical wind power generator of Figure 1 to explain the operation relationship between the wind vane and the impeller by the wind, Figure 3 Is a partial cross-sectional view schematically showing a part of a vertical wind power generator according to the prior art.

The vertical wind power generator of the prior art as shown in the figure is connected to the generator (2) at the bottom of the main shaft (1), a plurality of upper connecting shaft (3) and the lower connection radially from the main shaft (1) The shaft 5 extends, and the impeller 11 is mounted between the upper connecting shaft 3 and the lower connecting shaft 5, respectively, and the impeller 11 is wind vane through the wing front angle adjusting device 31. Connected with (7).

The vertical wind turbine operates as follows.

The wind vane 7 is always aligned in a straight line in the wind blowing direction. Therefore, assuming that the wind blows in the X-axis direction, the wind vane 7 is always aligned in the X-axis direction, but the impeller always rotates clockwise with a large rotation moment, so that the wing front angle adjusting device 31 (Fig. 1). The impeller 11 is arranged to have a constant angle in the direction of the wind portion, and at the same time, the circumferential movement is performed clockwise around the main shaft 1 by the wind.

That is, when the wind vane 7 and the impeller 11a are positioned in the X-axis direction at the a position, and the impeller is positioned at the b position by the circumferential movement (orbit), the wind vane 7 is rotated to match the direction of the wind. The impeller 11b is inclined in the direction of −45 degrees with respect to the X axis by the vane angle adjusting device 15 by the rotation angle of the wind vane 7, and the impeller is driven around the main shaft 1. By further rotating to reach the c position, the wind vane 7 is rotated to coincide with the direction of the wind, so that the wing front angle adjusting device 15 transmits the rotation angle of the wind vane 7 to the impeller 11c. (11c) is rotated by -90 degrees perpendicular to the direction of the wind, the impeller 11d by the wind vane 7 and the wing front angle adjuster 15 in the d position is -125 degrees to the direction of the wind It is arranged to be inclined.

Therefore, the impeller always carries the wind and circumferentially moves in one direction with a large rotation moment by the wing front angle adjusting device 31 which transmits the angular rotation of the wind vane to the impeller, and the main shaft 1 by the circumferential movement of the impeller. By rotating), the generator 2 arranged at the lower end of the main shaft 1 is generated.

As an example, the wind is blown in the 0 degree direction from above, but the impeller is disposed at the position illustrated above because the wind vane 7 is always aligned in a direction in which the wind is blown in any direction.

In addition, in the related art as described above, the circumferential motion and rotation ratio of the impeller 11 are most preferably 2: 1.

As described above, the wind vane is always placed in the direction of the wind when the wind is blowing, but for the wing front angle adjuster 31 which allows the impeller 11 to be placed in front of the direction of the wind. This will be described in detail.

First, referring to FIG. 3, the impeller 11 has a sail 15 mounted on a frame 13 having an “industrial” shape, and the upper horizontal portion 13a of the frame 13 is connected to the connecting member 17. It is connected to the wing front angle adjuster 31 by a ball 19 connected to the lower horizontal portion 13b of the frame 13 is rotatably mounted to the lower connecting shaft (5).

The connecting member 17 is coupled to the lower shaft 41 by a key and the lower end thereof is connected to the upper horizontal portion 13a of the impeller 11.

However, according to the prior art as described above, the wind vane 7 and the blade front angle adjusting device 31 are provided for each impeller 11, and there is a problem in that the structure is complicated.

In addition, due to the complicated structure, a lot of time was required for installation work, and a lot of equipment costs are increased due to an increase in the number of parts, as well as a maintenance cost.

In the related art, the load of the wind vane 7 and the vane front angle adjusting device 31 is concentrated at the ends of the upper and lower connecting shafts 3 and 5, thereby causing premature failure at the shaft connecting portion.

The object of the present invention devised to solve the above problems of the prior art, by directly controlling the rotational motion of each blade in the blade drive device in response to the signal of the observation, the maximum amount of generation according to the natural conditions of wind direction and wind speed It is to provide a variable structure of the blade of the wind power generator to obtain a stable.

In addition, another object of the present invention is to provide a variable structure of the blade of the wind power generator to make the installation and maintenance easy by making the blade drive device with a simple structure.

In addition, another object of the present invention is to prevent the overloading of the blade drive device or the generator by blocking the power transmission between each blade and the blade drive device when an abnormal strong wind such as gusts or typhoons occur. To provide a variable structure of the blade.

Blade variable structure of the wind power generator for achieving the object of the present invention generator using wind; A main shaft connected to the generator to allow rotational power to be input; A plurality of upper connecting rods connected radially to the main shaft and rotating together; A plurality of lower connecting rods connected radially on a main shaft below the upper connecting rod and rotating together; A plurality of blades installed between the upper connecting rod and the lower connecting rod, respectively, in a state capable of rotating; A blade driving device installed on a rotation shaft of each blade to control a rotating motion; A shaft support for axially coupling the upper end of the main shaft to a rotatable state and supporting the main shaft to be perpendicular to the ground; And an observation unit installed at an upper center of the shaft support to obtain wind direction and wind speed information and to provide a control signal to the blade driving device.

The present invention according to the above configuration has the effect of stably maintaining the maximum amount of generation according to the natural conditions of the wind direction and wind speed by directly controlling the rotational motion of each blade in the blade drive device in response to the signal of the observation unit.

In addition, the present invention has the effect that the installation and maintenance is easy because the structure of the blade drive device is simple, and the equipment cost is reduced.

In addition, the present invention, when an abnormal strong wind, such as a gust or typhoon, the power transmission between each blade and the blade driving device to be idle, thereby preventing overloading the blade driving device or the generator, thereby It has the effect of extending the life.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is a schematic diagram showing the structure of a wind power generator according to the present invention, Figure 5 is a view showing a planar installation structure of FIG.

The present invention as shown in the figure is provided with a generator 100 that generates power under rotational power.

At this time, the generator 100 is connected to the main shaft shaft 210 for transmitting the rotational power, the main shaft 210 is supported in the vertical direction by the shaft support 300.

The shaft support 300 has a lower end embedded in the ground and the upper end is bent in a horizontal direction to support the upper portion of the main shaft 210 in a rotatable state, the shaft support direction is to be stably supported in at least three directions or more It is desirable to.

The upper stem 220 and the lower stem 230 are radially connected to the main shaft 210.

At this time, the upper connecting rod 220 and the lower connecting rod 230 is arranged radially so that three to eight are faced up and down, it is possible to increase or decrease the number of installation depending on the wind power generation capacity.

Between the upper connector 220 and the lower connector 230 is a blade 240 for embracing the wind to rotate the headstock 210 by the force.

The blade 240 is axially coupled between the upper connecting rod 220 and the lower connecting rod 230, the blade 240 is not fixed to the installation angle, it is made of a variable structure.

This is to allow the blade 240, which is circumferentially moved around the main shaft 210, to rotate in conjunction with the corresponding circumferential position, thereby varying the installation angle, so as to actively receive the wind.

That is, when viewed from the wind blowing direction, the blade 240 located at the outermost right side of the main shaft 210 to accommodate the most wind, while the blade 240 moves in the left direction of the main shaft 210 While gradually narrowing the opposite angle to the wind while being positioned at the leftmost outer side of the main shaft 210, the blade 240 is rotated to minimize the opposite angle to the wind.

Subsequently, when the blade 240 positioned at the left outermost side of the headstock 210 circumferentially moves in the right direction of the headstock 210, the counter angle with the wind gradually increases, and is positioned at the rightmost outermost side, The opposing angle reaches maximum.

The rotating motion of the blade 240 as described above is made by the blade driving device 250.

The blade driving device 250 is installed on the lower axis of rotation of each blade (240).

Looking at the configuration for this, the spur gear 251 is installed on the rotating shaft of the blade 240, the worm gear 253 is installed to mesh with the spur gear 251, the motor for driving the worm gear 253 Reference numeral 255 is installed in the lower connecting table 230.

That is, the worm gear 253 receiving the rotational power by the motor 255 rotates the spur gear 251 to allow the blade 240 to rotate.

At this time, the transmission direction of the power is transmitted in the order of the motor 255-worm gear 253-spur gear 251-blade 240, power transmission in the reverse direction, that is, blade 240-spur gear 251- Power transmission of the worm gear 253 and the motor 255 is not made.

The blade driving device 250 is provided with a driving signal through the observation unit 400, such an observation unit 400 is installed in the upper center of the shaft support (300).

The observation unit 400 has a control box 430 is located in the upper center of the shaft support 300, the wind vane 410 and the anemometer 420 for measuring the wind direction and wind speed at the top of the control box 430 Is installed.

And, the lower portion of the control box 430 is provided with a position detection unit 440 to detect the circumferential position of the blade 240 in real time.

At this time, the position detection unit 440 is installed in the circumferential base substrate 441 at the bottom of the control box 430, and a plurality of fixed sensors 442 are installed at equal intervals in the circumference of the base substrate 441 do.

At this time, each of the fixed sensors 442 is installed on the circumference around the main shaft 210, and has a unique position information according to the reference position.

Here, the reference position information may be changed every time according to the wind direction.

In addition, a main shaft 210 is rotatably coupled to a center of the base substrate 441, and an upper position of the upper stem 220 connected radially from the main shaft 210 is opposite to the fixed sensor 442. The movement sensors 443 are mounted on the respective sides.

The movement sensor 443 is moved in the circumferential direction by the rotation of the main shaft 210, at this time, a signal is generated when crossing the upper fixed sensor 442, the blade 240 by the signal at this time ) Transmits a control signal to the blade driving device 250 to rotate by a predetermined angle.

That is, when the direction of the wind is determined by the information of the wind vane 410, the reference position sensor is selected from the fixed sensors 442 using the wind direction information at this time, and another fixed sensor ( 442) unique location information (eg, A1, A2, A3 ..... An) is set. At this time, each of the fixed sensor 442 may be arranged at intervals of 1 degree, may be installed by the bar, such as arranged at intervals of 5 or 10 degrees.

Therefore, it is possible to determine the relative position of the movement sensor 443 through the unique position information of the fixed sensor 442, which is, the circumferential position of the blade 240 circumferentially moved around the main axis 210 It becomes possible to vary the installation angle appropriately in conjunction with the wind direction.

In this case, the control box 430 acquires information of the wind vane 410, selects a reference position sensor among the plurality of fixed sensors 442, and acquires information of the anemometer 420 to revolve the blade 240. When converting the speed, and when the cross signal between the reference position sensor and the movement sensor 443 occurs, when the blade 240 revolves about one main axis 210, the blade driving device 250 to be rotated one rotation ) Can also be controlled.

This can simplify the control signal since the movement sensor 443 does not have to generate a cross signal with all the fixed sensors 442.

In addition, the present invention described above may allow the electronic clutch 260 for power cutoff between the blade 240 and the blade driving device 250 to be installed. The electronic clutch 260 may have a strong wind such as a typhoon. In this case, the power transmission is cut off so that the blades 240 are naturally arranged in a straight line along the direction of the wind to prevent the blade driving device 250 from being overloaded, while blocking the rotation of the headstock 210 to prevent the generator. Overloading of the 100 is prevented.

In this case, the observation unit 400 may be installed at the upper center of the shaft support 300, or may be installed in a separate place, and obtain the optimal blade installation angle through the information obtained by obtaining the wind direction and wind speed information. By calculating and providing a control signal to the blade driving device 250, it is possible to optimize the power generation efficiency.

According to the present invention according to the above configuration, by directly controlling the rotational motion of each blade in the blade drive device in response to the signal of the observation unit, it is possible to stably maintain the maximum amount of generation according to the natural conditions of the wind direction and wind speed, Because of its simple structure, it is easy to install, install and maintain. When abnormal winds such as gusts or typhoons occur, the power transmission between each blade and the blade driving device is cut off, thereby overloading the blade driving device or generator. Can be prevented.

1 is a perspective view showing a vertical wind power generator according to the prior art.

Figure 2 is a plan view schematically showing the vertical wind turbine of Figure 1 to explain the operation relationship between the wind vane and the impeller by the wind.

3 is a partial cross-sectional view schematically showing a part of a vertical wind power generator according to the prior art.

Figure 4 is a schematic diagram showing the structure of a wind power generator according to the present invention.

5 is a view showing a planar installation structure of FIG.

100: generator 210: headstock

220: upper connector 230: lower connector

240: blade 250: blade drive device

251: spur gear 253: worm gear

255: motor 260: electromagnetic clutch

300: shaft support 400: observation

410: wind vane 420: anemometer

430: control box 430: position detector

441: base substrate 442: fixed sensor

443: moving sensor

Claims

A generator 100 using wind power; A main shaft 210 connected to the generator 100 to receive a rotational power; A plurality of upper connecting rods 220 radially connected to the headstock 210 and rotating together; A plurality of lower connecting rods 230 connected to the plurality of radially on the main shaft 210 under the upper connecting rod 220 and rotating together; A plurality of blades 240 installed between the upper connector 220 and the lower connector 230 in a state in which a rotating motion is possible; A blade driving device 250 installed on a rotation shaft of each blade 240 to control a rotating motion; An axis support 300 for axially coupling the upper end of the main spindle 210 in a rotatable state and supporting the main spindle 210 in a state perpendicular to the ground; And an observation unit 400 installed at an upper center of the shaft support 300 to obtain wind direction and wind speed information and to provide a control signal to the blade driving device 250.

The observation unit 400 is a control box 430 located in the upper center of the shaft support 300, the wind vane 410, anemometer 420 for measuring the wind direction and wind speed in the upper portion of the control box 430 and Is installed in the lower portion of the control box 430 is made of a position detection unit 440 to detect the circumferential position of the blade 240 in real time,

The position detecting unit 440 is a base sensor 441 in the circumferential direction installed on the bottom of the control box 430, and the fixed sensor 442 and the fixed sensor are installed at equal intervals around the circumference of the base substrate 441 A movement sensor 443 mounted on the upper connecting rod 220 at a position opposite to the sensor 442,

The control box 430 acquires information of the wind vane 410 to select a reference position sensor among a plurality of fixed sensors 442, and the unique position information of the other fixed sensors 442 is based on the reference position sensor. The reference position sensor is selected from the plurality of fixed sensors 442 by acquiring the information of the wind vane 410, and the idle speed of the blade 240 is converted by acquiring the information of the anemometer 420. When the cross position signal between the reference position sensor and the movement sensor 443 is generated, when the blade 240 revolves about one main axis 210, the blade driving device 250 is controlled to rotate by one rotation.

Between the blade 240 and the blade driving device 250 is provided with an electronic clutch 260 for the power cut off, the electronic clutch 260 is a strong wind, such as typhoons, block the power transmission to the blade ( The blade variable structure of the wind turbine, characterized in that the 240 is naturally arranged in a straight line along the direction of the wind to prevent the blade driving device 250 from being overloaded.

The method of claim 1,

The upper connecting member 220 and the lower connecting member 230 is a variable structure of the blade of the wind turbine, characterized in that the radial arrangement so that three to eight are opposed to up and down.

The method of claim 1,

The blade 240, when the opposite angle to the wind at the outermost side of the headstock 210 is the maximum, the opposite angle to the wind at the opposite outermost surface of the headstock 210 is the minimum Blade variable structure of the wind turbine, characterized in that.

The method of claim 1,

The blade driving device 250,

Spur gear 251 is installed on the rotating shaft of the blade 240, a worm gear 253 is installed to engage with the spur gear 251, and a motor 255 for driving the worm gear 253 Blade variable structure of the wind turbine, characterized in that.

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