KR102032550B1 - Wind power generator - Google Patents

Abstract

According to an embodiment of the present invention, a wind power generator comprises: a tower vertically placed on the ground with a column shape, wherein a guide space is concavely formed on an upper surface, and a plurality of guide openings are formed to be connected to the guide space on an external side surface; a nacelle positioned on an upper surface of the tower and having an accommodation space connected to the guide space to convert a rotational force into electrical energy; a hub rotationally installed at one end of the nacelle; and a plurality of blades, each extending from the side of the hub and spaced apart from each other, wherein a wind flows toward the blades and the tower to rotate the blades and the wind flows into the guide openings and the accommodation space through the guide space to generate a rotational force and rotate the hub.

Description

Wind power generators

The present invention relates to a wind power generation apparatus, and more particularly, to a wind power generation apparatus capable of preventing a stop due to a decrease in wind speed and increasing a power generation time.

Environmental pollution and depletion of fossil energy are present challenges for humanity. Due to these challenges, efforts have been made to find environmentally friendly renewable energy sources that can reduce environmental pollution.

Renewable energy is energy that recycles existing fossil fuels or uses renewable energy, including, for example, solar energy, solar energy, geothermal energy, marine energy (eg, tidal energy, algae, blue, etc.), Wind energy, bioenergy (eg, energy due to decomposition of flora and fauna) and the like.

In particular, a wind power generator using wind energy (ie, wind energy) among renewable energy is a device that converts wind energy into electrical energy. In such a wind turbine, a nacelle is installed at the top of a tower located vertically on the ground. Inside the nacelle there is a gearbox, a generator and a control device. The blades are rotatably installed in the nacelle and the rotational force of the blades is transmitted to the generator via the main shaft via the hub. In addition, the wind vane is positioned at the top of the nacelle, the wind vane is to optimally control the wind turbine generator according to the wind speed and to monitor the power generation. Based on the wind direction and wind speed measured by the wind vane, the pitch angle of the blade can be adjusted and the nacelle can be rotated toward the direction of the wind flow, thereby maximizing power generation efficiency.

On the other hand, in the wind turbine, the wind energy rotates the blade and the rotational force of the blade is converted into electrical energy. Such a wind turbine generator generates electrical energy and is generally installed in a space capable of providing wind speeds of 6 m / s to 9 m / s. Here, the blade can be rotated over a predetermined wind speed to generate electrical energy. If the wind speed is lower than the predetermined wind speed, the blade does not rotate, and the wind power generator can be stopped. With the wind turbine stationary, no electrical energy is generated. Here, even if the predetermined wind speed of the wind speed is reached, the blade does not rotate. With the wind turbine stationary, significant drive force is required to rotate the blades again. Rotating the blades is a very difficult task. Therefore, the wind turbine generator does not need to be stopped even at the reduction of the wind speed.

The technical problem to be achieved by the wind turbine generator according to the technical idea of the present invention is to provide a wind turbine generator that can be stably operated without a stop due to the reduction of wind speed.

In addition, the technical problem to be achieved by the wind power generator according to the technical idea of the present invention is to provide a wind power generator that can improve the power generation efficiency and power generation time by the wind.

The technical problem to be achieved by the wind power generator according to the technical idea of the present invention is not limited to the above-mentioned problem, another problem that is not mentioned will be clearly understood by those skilled in the art from the following description.

Wind power generation device according to an embodiment of the present invention according to the present invention, is formed in a column shape and is located in the direction perpendicular to the ground, the upper surface is formed with a concave guide space, the outer surface is connected to a plurality of guide space A tower in which guide openings are formed; A nacelle positioned on an upper surface of the tower and having an accommodation space connected to the guide space, the nacelle converting rotational force into electrical energy; A hub rotatably installed at one end of the nacelle; And a plurality of blades, each extending from the side of the hub and spaced apart from each other, wherein the wind flows toward the blade and the tower to rotate the blades and enter the receiving space through the guide openings and the guide space. It can be characterized in that it can generate a rotational force and rotate the hub.

In addition, the nacelle may include: a housing having an accommodation space located on an upper surface of the tower and connected to the guide space; A rotating shaft positioned in the accommodation space and connected to the hub and corresponding to the guide space and positioned above the guide space; A generator accommodated in the accommodation space and connected to the rotary shaft to convert rotational force of the rotary shaft into electrical energy; A plurality of shaft blades spaced apart along the circumferential direction of the rotating shaft on an outer circumferential surface of the rotating shaft; And a gearbox positioned between the rotary shaft and the generator, connecting the rotary shaft and the generator, transmitting a rotational force of the rotary shaft to the generator, and rotating the generator at a rotational speed greater than the rotational speed of the rotary shaft. And flow into the receiving space through the guide space to rotate the shaft blades to rotate the rotating shaft, and the rotating force of the rotating shaft can be transmitted to the generator through the gearbox.

In addition, the nacelle is located on the upper surface of the wind vane for detecting the wind speed and direction; And a brake positioned between the gear box and the generator to reduce or block rotational force of the rotating shaft transmitted to the generator; A rotating part positioned between the tower and the housing to rotate the housing about an axis along a vertical direction; And a control unit accommodated in the accommodation space and connected to the wind vane, the brake and the rotating unit, digitizing the wind speed and the wind direction detected by the wind vane, and controlling the brake and the rotating unit based on the numerical wind speed and the wind direction. Can be.

Further, the guide openings each have a cross section that becomes narrower in contact with the guide space, and the wind may have an increased flow rate when passing through the guide opening so that the wind enters the guide space.

In addition, the guide space has a cross section that becomes narrower toward the upper side, and the wind may have an increased flow rate as it flows upward along the guide space.

In addition, the tower is made of a fan, the induction fan is located on the bottom surface of the guide space to guide the wind flowed into the guide space to the upper receiving space; And an induction power supply unit connected to the induction fan and the generator to receive and charge electric energy from the generator, and supply the electric energy to the induction fan to operate the induction fan.

In addition, the tower may further include a guide cover located on the outer side of the tower along the upper edge of the guide opening and spaced apart from the guide opening and extending to correspond to the guide opening.

In addition, the guide openings are formed at the upper end of the tower, the wind turbine is installed on the outer surface of the tower, the wind flowing toward the tower flows upward along the tower, leading to the guide space through the guide opening The guide unit may further include.

The guide unit may further include: a guide base positioned to surround the outer surface of the tower and having a base opening corresponding to the guide opening; And a guide body which is formed of a plurality, and is spaced apart from each other along the longitudinal direction of the tower while corresponding to the guide opening, and forms a body space having a cross section gradually narrowing upward with the guide base. The silver flows toward the tower and passes between the guide bodies to enter the body space and flow upward.

In addition, the guide body may be formed in a curved shape bent toward the guide base, the body base is positioned to be spaced apart from the guide base, forming a gap with the guide base gradually narrowed toward the top; An auxiliary base formed along a lower end of the body base and extending to be spaced apart from the guide base toward the lower side; And it is made of a rod shape, it may include a fixed body for connecting the body base and the guide base.

Wind turbine generators according to embodiments of the present invention have the following effects.

(1) It can be operated stably without stopping due to the decrease of wind speed.

(2) Power generation efficiency and power generation time by wind power can be improved.

However, the effect that can be achieved by the wind turbine generator according to an embodiment of the present invention is not limited to those mentioned above, and other effects not mentioned may be clearly understood by those skilled in the art from the following description. There will be.

BRIEF DESCRIPTION OF THE DRAWINGS In order to better understand the drawings referred to herein, a brief description of each drawing is provided.
1 is a perspective view showing a wind turbine generator according to a first embodiment of the present invention.
2 is a perspective view showing the interior of the wind turbine generator according to the first embodiment of the present invention.
3 is a cross-sectional view showing a wind turbine generator according to a first embodiment of the present invention.
4 is a perspective view showing a wind turbine generator according to a second embodiment of the present invention.
5 is a cross-sectional view showing a wind turbine generator according to a second embodiment of the present invention.

The present invention may be variously modified and have various embodiments, and specific embodiments are illustrated in the drawings and described in detail with reference to the accompanying drawings. However, this is not intended to limit the present invention to specific embodiments, it should be understood that the present invention includes all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the present invention, when it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, the numbers (eg, first, second, etc.) used in the description process of the present specification are merely identification symbols for distinguishing one component from another component.

In addition, in the present specification, when one component is referred to as "connected" or "connected" with another component, the one component may be directly connected or directly connected to the other component, but in particular It is to be understood that, unless there is an opposite substrate, it may be connected or connected via another component in the middle.

In addition, the components represented by '~' in the present specification may be divided into two or more components by combining two or more components into one component, or by one or more components. In addition, each component to be described below may additionally perform some or all of the functions of other components in addition to the main functions of which they are responsible, and some of the main functions of each of the components may be different. Of course, it may be carried out exclusively by the component.

Hereinafter, embodiments according to the spirit of the present invention will be described in detail.

1 is a perspective view showing a wind turbine 100 according to a first embodiment of the present invention, Figure 2 is a perspective view showing the inside of a wind turbine 100 according to a first embodiment of the present invention, 3 is a cross-sectional view showing the wind power generator 100 according to the first embodiment of the present invention.

1 to 3, the wind turbine generator 100 according to the first embodiment of the present invention includes a tower 101, a nacelle 102, a hub 103, and blades 104. Convert wind energy into electrical energy. Here, the wind energy means the energy carried by the wind.

The tower 101 is located in a direction perpendicular to the ground. Here, the tower 101 has a columnar shape. In addition, the tower 101 is provided with a guide space 101a and guide openings 101b.

The guide space 101a may be concave on the top surface of the tower 101, and may have a shape corresponding to the tower 101. Here, the guide space 101a may be formed in the form of a nozzle having a cross section that gradually narrows toward the upper side.

The guide openings 101b are formed in plural numbers, and are formed in the outer surface of the tower 101 and are connected to the guide spaces 101a, respectively. Here, the guide openings 101b may be positioned to correspond to the direction of the wind blowing toward the wind power generator 100, and may be spaced apart from each other along the longitudinal direction of the tower 101 at the outer surface of the tower 101. Can be located. In addition, the guide openings 101b may be formed in the form of nozzles each having a cross section that narrows closer to the guide space 101a.

Wind may flow toward the wind turbine 100 and enter the guide openings 101b. Here, since the guide openings 101b have a narrower cross section as they approach the guide space 101a, the wind may have an increased flow rate when passing through the guide opening 101b to enter the guide space 101a. . In addition, since the guide space 101a has a cross-sectional area that becomes narrower toward the upper side, the wind may have an increased flow rate when the wind flows into the guide space 101a and flows upward.

In addition, the tower 101 may include an induction fan 111, an induction power source 112, and a guide cover 113.

Induction fan 111 is made of a fan, but is installed on the bottom surface of the guide space (101a). Here, the induction fan 111 may flow the wind introduced into the guide space 101a upwards.

Induction power supply 112 is connected to the induction fan 111 to supply electrical energy. Here, the induction fan 111 may be operated by electrical energy. In addition, the induction power source 112 may include a rechargeable battery.

The guide cover 113 is located on the outer side of the tower 101 along the upper edge of the guide opening 101b and is spaced apart from the guide opening 101b and extends to correspond to the guide opening 101b. Here, the guide cover 113 is connected to the guide opening 101b to form a predetermined space. This guide cover 113 keeps the guide opening 101b open. Here, the wind may enter the guide space 101a through the guide opening 101b. In addition, when the rain falls, the guide cover 113 may contact the falling rainwater to separate the rainwater from the guide opening 101b. That is, the guide cover 113 may block and prevent the inflow of rainwater into the guide opening 101b while enabling the inflow of wind into the guide space 101a.

The nacelle 102 may be located on the top surface of the tower 101 and connected to the guide space 101a. Here, the accommodation space 102a formed in the nacelle 102 may be connected to the guide space 101a. The nacelle 102 is used to receive rotational force and convert it into electrical energy. In addition, the nacelle 102 includes a housing 121, a rotating shaft 122, a generator 123, shaft blades 124, a gear box 125, a wind vane 126, a brake 127, and a rotating part ( 128 and a controller 129.

The housing 121 is located on the top surface of the tower 101 and forms an accommodation space 102a. Here, the accommodation space 102a is connected to the guide space 101a.

The rotary shaft 122 may be accommodated in the accommodation space 102a and penetrate the housing 121 to be connected to the hub 103. Here, the rotary shaft 122 may be located in the direction orthogonal to the tower 101, and may be rotated together with the hub 103. The rotating shaft 122 may be formed in a circular rod shape for smooth rotation. In addition, the rotation shaft 122 is positioned above the guide space 101a while corresponding to the guide space 101a.

The generator 123 is accommodated in the accommodation space 102a and connected to the rotation shaft 122. Here, the generator 123 may convert the rotational force of the rotary shaft 122 into electrical energy. In addition, the generator 123 may be connected to a separate power system or a charging device, and may supply electrical energy to a separate power system or a charging device.

Shaft blades 124 is formed of a plurality, it is formed on the outer circumferential surface of the rotary shaft 122 spaced apart along the circumferential direction of the rotary shaft 122. Here, each of the shaft blades 124 has a rectangular plate shape, and is positioned along the longitudinal direction of the rotary shaft 122 to be accommodated in the accommodation space 102a.

Wind may flow toward the tower 101 and enter the accommodation space 102a through the guide opening 101b and the guide space 101a. Here, the wind introduced into the accommodation space 102a may have a higher flow rate than the wind flowing toward the tower 101 due to the shape of the guide opening 101b and the guide space 101a and the guide fan 111. The shaft blades 124 may be rotated by the wind introduced into the accommodation space 102a to rotate the rotating shaft 122. That is, the shaft blades 124 may generate rotational force by using wind toward the tower 101 in combination with the rotating shaft 122.

The gear box 125 is positioned between the rotation shaft 122 and the generator 123 to connect the rotation shaft 122 and the generator 123. The rotational force of the rotary shaft 122 is transmitted to the generator 123 through the gear box 125. Here, the generator 123 has a rotation speed larger than the rotation shaft 122 by the gear box 125.

Wind vane 126 is located on the upper surface of the housing 121 to sense the wind speed and the wind direction. Here, the detected wind speed and wind direction are the wind speed and the wind direction for the wind passing through the wind power generator 100.

The brake 127 may be located between the gear box 125 and the generator 123 and used to reduce or block the rotational force of the rotating shaft 122 transmitted to the generator 123. That is, by reducing or interrupting the rotational force of the rotary shaft 122 transmitted to the generator 123, the rotational speed of the rotary shaft 122 may be reduced, or the rotation of the rotary shaft 122 may be stopped.

In particular, the brake 127 may be operated according to the wind speed sensed by the wind vane 126. For example, when the wind vane 126 detects wind speeds above a set point (eg, 25 m / s, etc.), the brake 127 reduces the rotational speed of the rotating shaft 122 or the rotating shaft 122. It is operated so that it can stop the rotation.

The rotating unit 128 may be positioned between the tower 101 and the housing 121 to rotate the housing 121 about an axis along a vertical direction. Here, the housing 121 may be positioned to correspond to the direction of the wind passing through the wind power generator 100 by the rotating unit 128. As a result, the blades 104 to be described below may be positioned to correspond to the direction of the wind.

In particular, the pivot 128 may be operated according to the wind direction sensed by the wind vane 126. For example, when the wind vane 126 detects a wind direction that is different from the reference direction (for example, the longitudinal direction of the housing 121, etc.), the pivoting unit 128 may adjust the housing direction to match the wind direction. ) Can be rotated.

The controller 129 is accommodated in the accommodation space 102a and connected to the wind vane 126, the brake 127, and the pivot 128. Here, the controller 129 digitizes the wind speed and wind direction detected by the wind vane 126 and controls the brake 127 and the rotating unit 128 based on the quantified wind speed and wind direction.

For example, when the wind vane 126 detects wind speed above a set value (for example, 25 m / s, etc.), the controller 129 controls the brake 127 to decrease the rotation speed of the rotating shaft 122. Or stop the rotating shaft 122. In addition, when the wind vane 126 detects a wind direction different from the reference direction (for example, the longitudinal direction of the housing 121, etc.), the controller 129 controls the pivoting unit 128 to control the housing 121. By rotating, the wind direction can be matched with the reference direction.

Meanwhile, the generator 123 of the present embodiment may be connected to the controller 129 and the induction power source 112. That is, the electrical energy generated by the generator 123 may be supplied to the controller 129 and the induction power source 112. Thus, when the rotation of the rotating shaft 122 is made, the control unit 129 is operated, the induction power source 112 can operate the induction fan 111 while charging the electrical energy. In addition, the induction power supply unit 112 and the generator 123 may be connected using an electric wire (not shown) positioned over the accommodation space 102a and the guide space 101a, and the induction power supply unit 112 may be connected to the generator 123. ) Can be charged with electrical energy.

The hub 103 is installed to be rotatable on one end face of the nacelle 102. Here, the hub 103 is located at one end face of the housing 121 of the nacelle 102 and is connected to the rotary shaft 122 of the nacelle 102. The hub 103 can be rotated with the rotating shaft 122.

Blade 104 consists of a plurality, it is rotatably installed radially on the side of the hub (103). Here, the blades 104 may be rotated by the wind blowing toward the wind turbine 100. That is, the blades 104 convert the wind into rotational force. The rotational force by the blades 104 rotates the hub 103 and the rotating shaft 122 and is transmitted to the generator 123 and converted into electrical energy.

In addition, the blades 104 each maintain a predetermined angle of inclination to be rotated by the wind. On the other hand, the blades 104 have different contact areas according to the direction of the wind according to the inclination angle, respectively, and by adjusting the inclination angle of the blade 104 in accordance with the strength of the wind, by using the force of the wind efficiently to improve the power generation efficiency Can be improved.

Wind toward the blades 104 in the wind turbine generator 100 of the present embodiment rotates the blades 104 to rotate the rotating shaft 122 of the hub 103 and the nacelle 102. In addition, the wind toward the tower 101 is introduced into the guide space (101a) through the guide opening (101b), flows upward in the guide space (101a) to the shaft blade (in the receiving space (102a) of the nacelle 102) 124). Here, since the shaft blades 124 are formed in plural and are spaced apart along the circumferential direction of the rotating shaft 122 on the outer circumferential surface of the rotating shaft 122, the rotating shaft 122 may be rotated. In addition, since the guide openings 101b each have a cross section that becomes narrower as they approach the guide space 101a, and the guide space 101a has a cross section that narrows toward the upper side, the wind speed of the accommodation space 102a It may be greater than the wind speed of the wind towards the blade 104 or tower 101.

As the rotation of the rotary shaft 122 is made by the blades 104 and the shaft blades 124 due to the wind as described above, the generator 123 is connected to the rotary shaft 122, the rotary shaft 122 It receives the rotational force of and converts the rotational force into electrical energy. Here, the rotational force of the rotary shaft 122 is generated by the rotational force by the shaft blades 124 by the wind toward the tower 101 as well as the rotational force by the blades 104 by the wind toward the blades 104. do. For this reason, the wind power generator 100 of the present embodiment may provide improved power generation efficiency by generating electric energy using wind acting on the blade 101 as well as wind acting on the blade 104.

As mentioned above, the rotary shaft 122 may be provided with the rotational force by the shaft blades 124 as well as the rotational force by the blades 104. The wind speed can be reduced to such an extent that the rotation of the blade 104 can be stopped. In the wind power generator 100 of the present embodiment, the wind may be introduced into the accommodation space 102a through the guide opening 101b and the guide space 101a of the tower 101. Here, the wind introduced into the accommodation space 102a may act as wind power that rotates the shaft blade 124 to rotate the rotating shaft 122. Due to this, even if the wind speed is reduced to such an extent that it can stop the rotation of the blade 104, the rotating shaft 122 is rotatable by wind towards the tower 101, thereby providing additional rotational force to the blades 104. Can maintain the rotation of the blades 104. Therefore, the wind power generator 100 of the present embodiment can prevent the stop of the blades 104 due to the reduction of the wind power, it is possible to improve the power generation time by the wind power.

In particular, a typical wind horn is stopped due to the stopping of the blades, requires considerable power due to the reactivation of the blades and there are many difficulties. On the other hand, the wind power generator 100 of the present embodiment can prevent the difficulty of restarting the stationary blade 104 by maintaining the rotation of the blade 104.

4 is a perspective view showing a wind turbine 300 according to a second embodiment of the present invention, Figure 5 is a cross-sectional view showing a wind turbine 300 according to a second embodiment of the present invention.

4 and 5, the wind power generator 300 according to the second embodiment of the present invention is a tower 301, nacelle 302, hub 303, blades 304 and the guide portion 305, and converts wind energy into electrical energy. Here, the wind energy means the energy carried by the wind.

Tower 301 is located in a direction perpendicular to the ground. Here, the tower 301 has a columnar shape. In addition, the guide space 301a and the guide opening 301b are formed in the tower 301.

The guide space 301a may be concave on the top surface of the tower 301, and may have a shape corresponding to the tower 301. Here, the guide space 301a may be formed in the shape of a nozzle having a cross section that gradually narrows toward the upper side.

The guide openings 301b are formed in plural, and are formed in the outer surface of the tower 301 and are connected to the guide spaces 301a, respectively. Here, the guide openings 301b may be located to correspond to the direction of the wind blowing toward the wind turbine 300. In addition, the guide openings 301b may be formed in the form of nozzles each having a cross section that becomes narrower as it approaches the guide space 301a.

In addition, the guide opening 301b of the present embodiment may be located at the upper end of the tower 301. Wind may flow toward the wind turbine 300 and enter the guide openings 301b. Here, the guide openings 301b have a narrower cross section as they approach the guide space 301a, so that the wind has an increased flow rate when passing through the guide opening 301b so as to flow into the upper end of the guide space 301a. Can be.

In addition, the tower 301 may include an induction fan 311 and an induction power supply 312.

Induction fan 311 is made in the form of a fan, it is installed on the bottom surface of the guide space (301a). In this case, the induction fan 311 may prevent the air introduced into the upper end of the guide space 301a from being guided downward. On the other hand, the induction fan 311 may be located near the guide opening 301b while being positioned below the guide opening 301b in the guide space 301a.

Induction power supply 312 is connected to the induction fan 311 to supply electrical energy. Here, the induction fan 311 may be operated by electrical energy. In addition, the induction power supply unit 312 may include a rechargeable battery.

The nacelle 302 may be located on the top surface of the tower 301 and connected to the guide space 301a. Here, the accommodation space 302a formed in the nacelle 302 may be connected to the guide space 301a. The nacelle 302 is used to receive rotational force and convert it into electrical energy. In addition, the nacelle 302 includes a housing 321, a rotating shaft 322, a generator 323, shaft blades 324, a gear box 325, a wind vane 326, a brake 327, and a rotating part ( 328 and the controller 329.

The housing 321 is located on the top surface of the tower 301 and forms an accommodation space 302a. Here, the accommodation space 302a is connected to the guide space 301a.

The rotating shaft 322 may be accommodated in the accommodation space 302a and penetrate the housing 321 to be connected to the hub 303. Here, the rotation shaft 322 may be located in a direction orthogonal to the tower 301, and may be rotated together with the hub 303. The rotating shaft 322 may be formed in a circular rod shape for smooth rotation. In addition, the rotation shaft 322 is positioned above the guide space 301a while corresponding to the guide space 301a.

The generator 323 is accommodated in the accommodation space 302a and is connected to the rotating shaft 322. Here, the generator 323 may convert the rotational force of the rotary shaft 322 into electrical energy. In addition, the generator 323 may be connected to a separate power system or a charging device, and may supply electrical energy to a separate power system or a charging device.

Shaft blades 324 are made of a plurality, it is formed on the outer circumferential surface of the rotary shaft 322 spaced apart along the circumferential direction of the rotary shaft 322. Here, each of the shaft blades 324 has a rectangular plate shape and is positioned along the longitudinal direction of the rotary shaft 322 to be accommodated in the accommodation space 302a.

Wind may flow toward the tower 301 and enter the accommodation space 302a through the guide opening 301b and the guide space 301a. The shaft blades 324 may be rotated by the wind introduced into the accommodation space 302a to rotate the rotating shaft 322. That is, the shaft blades 324 may generate rotational force by using wind toward the tower 301 in combination with the rotating shaft 322.

The gear box 325 is positioned between the rotary shaft 322 and the generator 323 to connect the rotary shaft 322 and the generator 323. The rotational force of the rotary shaft 322 is transmitted to the generator 323 through the gear box 325. Here, the generator 323 has a rotation speed larger than the rotation shaft 322 by the gear box 325.

The wind vane 326 is located on the upper surface of the housing 321 to sense the wind speed and the wind direction. Here, the detected wind speed and wind direction are the wind speed and the wind direction for the wind passing through the wind turbine 300.

The brake 327 may be located between the gear box 325 and the generator 323 to be used to reduce or block the rotational force of the rotating shaft 322 transmitted to the generator 323. That is, the rotational force of the rotation shaft 322 is reduced or blocked by the rotational force of the rotation shaft 322 transmitted to the generator 323, or the rotation of the rotation shaft 322 may be stopped.

In particular, the brake 327 may be operated according to the wind speed sensed by the wind vane 326. For example, when the wind vane 326 detects wind speeds above a set point (eg, 25 m / s, etc.), the brake 327 reduces the rotational speed of the rotating shaft 322 or the rotating shaft 322. It is operated so that it can stop the rotation.

The pivot 328 may be positioned between the tower 301 and the housing 321 to rotate the housing 321 about an axis along a vertical direction. Here, the housing 321 may be positioned to correspond to the direction of the wind passing through the wind turbine 300 by the rotating unit 328. As a result, the blades 304 to be described later may be positioned to correspond to the direction of the wind.

In particular, the pivot 328 may be operated according to the wind direction sensed by the wind vane 326. For example, when the wind vane 326 detects a wind direction that is different from the reference direction (eg, the longitudinal direction of the housing 321, etc.), the pivot 328 may cause the housing 321 to match the wind direction with the wind direction. ) Can be rotated.

The controller 329 is accommodated in the accommodation space 302a and is connected to the wind vane 326, the brake 327, and the pivot 328. Here, the controller 329 digitizes the wind speed and wind direction detected by the wind vane 326 and controls the brake 327 and the rotating unit 328 based on the quantized wind speed and wind direction.

For example, when the wind vane 326 detects wind speed above a set value (for example, 25 m / s, etc.), the controller 329 controls the brake 327 to decrease the rotational speed of the rotating shaft 322. Or stop the rotating shaft 322. In addition, when the wind vane 326 detects a wind direction different from the reference direction (for example, the longitudinal direction of the housing 321, etc.), the controller 329 controls the pivoting unit 328 to control the housing 321. By rotating, the wind direction can be matched with the reference direction.

Meanwhile, the generator 323 of the present embodiment may be connected to the controller 329 and the induction power unit 312. That is, the electrical energy generated by the generator 323 may be supplied to the controller 329 and the induction power unit 312. Therefore, when the rotation shaft 322 is rotated, the control unit 329 is operated, the induction power supply unit 312 can operate the induction fan 311 while charging the electrical energy. In addition, the induction power supply unit 312 and the generator 323 may be connected by using an electric wire (not shown) positioned over the accommodation space 302a and the guide space 301a, and the induction power supply unit 312 is connected to the generator 323. ) Can be charged with electrical energy.

The hub 303 is installed to be rotatable on one end face of the nacelle 302. Here, the hub 303 is located at one end face of the housing 321 of the nacelle 302 and is connected to the rotation shaft 322 of the nacelle 302. The hub 303 can be rotated with the rotating shaft 322.

Blade 304 is composed of a plurality, it is rotatably installed radially on the side of the hub (303). Here, the blades 304 may be rotated by the wind blowing toward the wind turbine 300. That is, the blades 304 convert the wind into rotational force. Rotational force by the blades 304 rotates the hub 303 and the rotating shaft 322 and is transmitted to the generator 323 and converted into electrical energy.

In addition, the blades 304 each maintain a predetermined angle of inclination to be rotated by the wind. On the other hand, the blades 304 have different contact areas according to the direction of the wind according to the inclination angle, respectively, and by adjusting the inclination angle of the blade 304 according to the wind strength, the power efficiency is efficiently utilized by using the wind force. Can be improved.

The guide part 305 is installed on the outer side of the tower 301, and flows the wind which flows toward the tower 301 to the upper side along the tower 301. Here, the wind may be guided to the guide space 301a and introduced into the accommodation space 302a through the guide opening 301b formed at the upper end of the tower 301. Wind introduced into the accommodation space 302a may rotate the shaft blade 324 to rotate the rotating shaft 322. The guide part 305 guides the wind toward the tower 301 to be introduced into the accommodation space 302a. Here, the amount of wind flowing into the accommodation space 302a is increased in the guide portion 305, the rotational force of the shaft blade 324 may be increased.

In addition, the guide part 305 may include a guide base 351 and a guide body 353.

Guide base 351 is positioned to surround the outer surface of the tower 301. Here, the guide base 351 is made of a shape corresponding to the shape of the tower 301, the tower 301 is positioned in the form inserted into the guide base 351. In addition, a base opening 351a is formed in the guide base 351 to correspond to the guide opening 301b.

The guide body 353 is composed of a plurality, it is installed on the outer surface of the guide base 351 to correspond to the direction of the wind blowing toward the wind turbine 300. Here, the guide body 353 is positioned to be spaced apart from each other along the longitudinal direction of the tower 301 while corresponding to the guide opening (301b). A predetermined body space 305a is formed between the guide body 353 and the guide base 351. The body space 305a may have an open upper surface and a lower surface, and may have a cross section that becomes narrower toward the upper side.

In addition, the guide body 353 may include a body base 353a, an auxiliary base 353b, and a fixed body 353c.

The body base 353a has a curved shape. Here, the body base 353a may be bent toward the guide base 351 to have a curvature corresponding to the outer surface of the guide base 351. In addition, the body base 353a is positioned to be spaced apart from the guide base 351 and has a distance from the guide base 351 that becomes narrower toward the top. Both ends of the body base 353a may be positioned to approach the guide base 351. The body bases 353a are positioned to be spaced apart from each other along the longitudinal direction of the tower 301.

The auxiliary base 353b is formed along the lower end of the body base 353a and extends to be spaced apart from the guide base 351 toward the lower side. When the body bases 353a are positioned to be spaced apart from each other along the longitudinal direction of the tower 301, the auxiliary base 353b may be positioned to correspond to the spacing between the body bases 353a. Here, the wind may be introduced into the body space 305a through the body base 353a. In addition, when the rain falls, the auxiliary base 353b may contact the falling rainwater to separate the rainwater from between the body bases 353a. That is, the auxiliary base 353b may block and prevent the inflow of rainwater into the body space 305a while allowing the inflow of wind into the body space 305a.

The fixed body 353c has a rod shape, and connects the body base 353a and the guide base 351. As a result, the body base 353a and the auxiliary base 353b may be kept spaced apart from the guide base 351.

Here, the fixed body 353c may be welded and connected to the body base 353a and the guide base 351. In addition, the fixing body 353c has a bolt shape, and may be bolted to the body base 353a and the guide base 351. When the fixing body 353c is in the form of a bolt, the guide body 353 may be easily detachable from the guide base 351 and may be easily maintained even if damaged.

The guide body 353 as described above may be directly connected to the outer surface of the tower 301 without the guide base 351. In addition, the guide unit 305 as described above may be additionally applied to the tower 301 installed in the vertical direction on the ground.

Wind toward the blades 304 in the wind turbine 300 of this embodiment rotates the blades 304 to rotate the rotating shaft 322 of the hub 303 and nacelle 302. In addition, the wind toward the tower 301 is introduced into the body space 305a between the guide bodies 353 of the guide portion 305 and flows along the longitudinal direction of the tower 301 through the body space 305a. It is introduced into the guide space 301a through the base opening 351a and the guide opening 301b to reach the shaft blades 324 in the receiving space 302a of the nacelle 302. Here, since the shaft blades 324 are formed in plural and are spaced apart along the circumferential direction of the rotating shaft 322 on the outer circumferential surface of the rotating shaft 322, the rotating shaft 322 may be rotated. In addition, since the body space 305a has a cross section that becomes narrower toward the upper side, and the guide openings 301b each have a cross section that becomes narrower as they approach the guide space 301a, the wind passes between the guide bodies 353. It may be guided upward and introduced into the accommodation space 302a, and the wind speed of the accommodation space 302a may be greater than the wind speed toward the blade 304 or the tower 301.

As the wind is rotated by the blades 304 and the shaft blades 324 by the wind as described above, the generator 323 is connected to the rotary shaft 322, the rotary shaft 322 It receives the rotational force of and converts the rotational force into electrical energy. Here, the rotational force of the rotary shaft 322 is generated by the rotational force by the shaft blades 324 by the wind toward the tower 301 as well as the rotational force by the blades 304 by the wind toward the blades 304. do. For this reason, the wind power generator 300 of the present embodiment may provide improved power generation efficiency by generating electrical energy using wind acting on the blade 304 as well as wind acting on the tower 301.

As mentioned above, the rotating shaft 322 may be provided with the rotational force by the shaft blades 324 as well as the rotational force by the blades 304. The wind speed can be reduced to such an extent that the rotation of the blade 304 can be stopped. In the wind power generator 300 of the present embodiment, the wind is received through the body space 305a by the guide part 305, the guide opening 301b formed at the top of the tower 301, and the guide space 301a. ) Can be introduced into. Here, the wind introduced into the accommodation space 302a may act as wind power that rotates the shaft blade 324 to rotate the rotary shaft 322. Due to this, even if the wind speed is reduced to such an extent that it can stop the rotation of the blade 304, the rotating shaft 322 is rotatable by wind towards the tower 301, providing additional rotational force to the blades 304. Can maintain the rotation of the blades 304. Therefore, the wind power generator 300 of the present embodiment can prevent the stop of the blades 304 due to the reduction of the wind power, it is possible to improve the power generation time by the wind power.

In particular, a typical wind horn is stopped due to the stopping of the blades, requires considerable power due to the reactivation of the blades and there are many difficulties. On the other hand, the wind power generator 300 of the present embodiment can prevent the difficulty of restarting the stationary blade 304 by maintaining the rotation of the blade 304.

As mentioned above, although the technical idea of the present invention has been described in detail with reference to a preferred embodiment, the technical idea of the present invention is not limited to the above embodiments, and having ordinary skill in the art within the scope of the technical idea of the present invention. Many modifications and variations are possible.

100, 300: wind turbine
101, 301: tower
101a, 301a: guide space
101b, 301b: guide opening
111, 311: induction fan
112, 312: induction power supply
113: guide cover
102, 302: nacelle
103, 303: hub
104, 304: blade
305: guide part

Claims (10)

A tower having a columnar shape and positioned in a direction perpendicular to the ground, the tower having concave guide spaces formed thereon, and having a plurality of guide openings formed on the outer surface thereof to be connected to the guide spaces;
A nacelle positioned on an upper surface of the tower and having an accommodation space connected to the guide space, the nacelle converting rotational force into electrical energy;
A hub rotatably installed at one end of the nacelle; And
Each comprising a plurality of blades extending from the side of the hub and spaced from each other,
The wind can flow towards the blades and towers, rotating the blades, entering the receiving space through the guide openings and the guide space, generating a turning force and rotating the hub,
Nacelle,
A housing located on an upper surface of the tower and having a receiving space connected to the guide space;
A rotating shaft positioned in the accommodation space and connected to the hub and corresponding to the guide space and positioned above the guide space;
A generator accommodated in the accommodation space and connected to the rotary shaft to convert rotational force of the rotary shaft into electrical energy;
A plurality of shaft blades spaced apart along the circumferential direction of the rotating shaft on an outer circumferential surface of the rotating shaft; And
A gearbox positioned between the rotary shaft and the generator, connecting the rotary shaft and the generator, transmitting a rotational force of the rotary shaft to the generator, and rotating the generator at a rotational speed greater than the rotational speed of the rotary shaft;
Wind is introduced into the receiving space through the guide opening and the guide space, by rotating the shaft blades to rotate the rotating shaft, the rotational force of the rotating shaft is transmitted to the generator through the gearbox.
delete The method of claim 1, wherein the nacelle is
Wind vane anemometer is located on the upper surface of the housing to sense the wind speed and direction; And
A brake positioned between the gear box and the generator to reduce or block rotational force of the rotating shaft transmitted to the generator;
A rotating part positioned between the tower and the housing to rotate the housing about an axis along a vertical direction; And
And a control unit accommodated in the accommodation space and connected to the wind vane, the brake and the rotating unit, to quantify the wind speed and the wind direction detected by the wind vane, and to control the brake and the rotating unit based on the numerical wind speed and the wind direction. Wind power generator characterized in.
The method of claim 1,
The guide openings each have a cross section that becomes narrower in contact with the guide space,
And wind speed is increased when passing through the guide opening to enter the guide space.
The method according to claim 1 or 4,
The guide space has a cross section that narrows toward the top,
The wind turbine generator, characterized in that it has an increased flow rate when the wind flows upward along the guide space.
The method of claim 1, wherein the tower is
Induction fan made of a fan shape, which is located on the bottom surface of the guide space to flow the wind introduced into the guide space to the upper side to guide the receiving space; And
And an induction power supply unit connected to an induction fan and a generator to receive and charge electric energy from the generator, and supply an electric energy to the induction fan to operate the induction fan.
The method of claim 1, wherein the tower is
And a guide cover positioned on an outer surface of the tower along the upper edge of the guide opening and spaced apart from the guide opening to extend to correspond to the guide opening.
The method of claim 1,
Guide openings are formed at the top of the tower,
Wind power generator,
The wind turbine generator, characterized in that it further comprises a guide unit which is installed on the outer surface of the tower and flows toward the tower flows upward along the tower, leading to the guide space through the guide opening.
The method of claim 8, wherein the guide portion,
A guide base positioned to surround an outer surface of the tower and having a base opening corresponding to the guide opening; And
Comprising a plurality of, and including a guide body to form a body space in the cross section which is spaced from each other along the longitudinal direction of the tower corresponding to the guide opening, and gradually narrowed toward the upper side between the guide base,
The wind flows toward the tower to pass through between the guide body flows into the body space, characterized in that the flow toward the top.
The method of claim 9, wherein the guide body,
A body base formed in a curved shape bent toward the guide base and positioned to be spaced apart from the guide base, the body base forming a gap with the guide base that becomes narrower toward the top;
An auxiliary base formed along a lower end of the body base and extending to be spaced apart from the guide base toward the lower side; And
The wind turbine generator, characterized in that it comprises a fixed body for connecting the body base and the guide base.

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