JP2006348866A - Wind power generation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wind power generation device having simple construction easily adaptable to a larger size and a higher output for efficiently generating power by effectively utilizing weak wind energy independently of the direction of wind. <P>SOLUTION: The wind power generation device comprises a wind tunnel formed of a cylindrical member 14 erected from a base 13 in the vertical direction, a plurality of wind collecting plates 15 extending from the peripheral wall of the cylindrical member to the direction of a normal line, a top plate 16 for closing a space among the wind collecting plates and the upper end opening of the cylindrical members, a plurality of wind intakes 17 provided in the peripheral wall of the cylindrical member for guiding wind collected by the wind collecting plates into the wind tunnel, backflow preventing means provided in the wind intakes for allowing only the distribution of the wind from the outside of the cylindrical member to the inside of the cylindrical member, a turbine 21 to be driven by the wind blown from one end of the wind tunnel, and a generator 22 to be driven by the turbine. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wind turbine generator, and more particularly, to a wind turbine generator that generates power by effectively using energy of natural wind power.

Conventionally, various types of wind turbine generators have been proposed and implemented. Among these, there has been proposed a system in which four wind inlets are provided at 90 ° intervals on the side surface of the wind tunnel and the fan is rotated by the wind taken into the wind tunnel (see, for example, Patent Document 1). .
JP 2004-190506 A

  However, in the above-mentioned, the wind around the wind tunnel cannot be efficiently taken into the wind tunnel, and further, the wind taken into the wind tunnel blows from the wind tunnel to the leeward side. It could not be said that it was used effectively. Conventionally, wind has been collected by directing the trumpet-shaped opening toward the windward side, but the direction of the opening must be adjusted according to the wind direction, and a complicated mechanism is required. It was difficult.

  Therefore, the present invention can efficiently generate power by effectively using weak wind energy regardless of the wind direction, and can easily cope with an increase in size and output with a simple structure. The purpose is to provide.

  In order to achieve the above object, a wind turbine generator according to the present invention includes a wind tunnel made of a cylindrical member erected in a vertical direction from a base surface, and a plurality of wind collecting members extending in a normal direction from the peripheral wall of the cylindrical member. A plurality of plates, a top plate that closes between the air collecting plates and the upper end opening of the tubular member, and a plurality of winds that are provided on the peripheral wall of the tubular member and guide the wind collected by the air collecting plate into the wind tunnel Driven by a wind inlet, a backflow prevention means provided at the wind inlet and allowing only the flow of wind from the outside of the cylindrical member to the inside of the cylindrical member, and the wind blown from one end of the wind tunnel A turbine and a generator driven by the turbine are provided.

  In particular, in the wind power generator of the present invention, six air collecting plates are provided at equal intervals in the circumferential direction of the cylindrical member, and surplus air that exhausts excess wind taken into the wind tunnel is discharged. A wind discharge part is provided.

  According to the wind power generator of the present invention, the wind is collected in the direction of the wind tunnel by the plurality of air collecting plates, in particular, the six air collecting plates, so that several air collecting plates are located on the windward side. It can guide in the state compressed in the wind tunnel by the action of. Furthermore, since the backflow prevention means is provided at the wind intake port, the wind taken into the wind tunnel does not blow through to the leeward side. In addition, by discharging the excess wind in the wind tunnel from the excess wind discharge section, a large load is not applied to the turbine even in a strong wind. Basically, it can be formed simply by erecting a cylindrical member and a plurality of air collecting plates in the vertical direction from the ground surface on which the turbine or generator is installed. The height of the cylindrical member, the diameter of the wind tunnel, and the width of the air collecting plate can be set appropriately according to the conditions such as, and wind power generators and wind power generation equipment adapted to various conditions of the installation location should be installed Can do.

  1 to 6 show an embodiment of the wind power generator according to the present invention. FIG. 1 is a partially sectional front view, FIG. 2 is a transverse sectional view, and FIG. 3 is a longitudinal sectional view of a central portion of the apparatus. 4 is a cross-sectional view of the central part of the apparatus, FIG. 5 is a vertical cross-sectional view of the lower part of the apparatus, and FIG. 6 is a vertical cross-sectional view showing an example of the backflow prevention means.

  This wind power generator 10 is provided with a wind collecting means 12 on the ground with a generator room 11 in the basement, and the wind collecting means 12 includes a cylindrical member 14 erected above a foundation 13, The six air collecting plates 15 whose lower ends are fixed to the foundation 13 and whose base is fixed to the wall surface of the cylindrical member 14, and the upper end openings of the cylindrical member 14 and the upper end openings of the adjacent air collecting plates 15 are closed. And a wind inlet 17 provided on the wall surface of the cylindrical member 14.

  The tubular member 14 forms a wind tunnel 18 leading to the underground generator room 11 in the inside thereof, and the cross section is formed in a regular dodecagon shape obtained by dividing the peripheral wall into 12 equal parts in the circumferential direction. On each side, the mounting portion of the air collecting plate 15 and the air intake port 17 are alternately provided. The cylindrical member 14 can be divided into a plurality of parts in the circumferential direction and the height direction according to the height and diameter thereof, and can be assembled at the place where the wind power generator is installed. Further, the cylindrical member 14 may have the same diameter in the entire height direction, and is a gentle cone with a large diameter at the bottom and a small diameter at the top depending on the strength of the tubular member 14 and the pressure state in the wind tunnel 18. It can also be a shape.

  The base portion of the air collecting plate 15 is fixed to the outer wall of the cylindrical member 14, and the intermediate portion in the width direction is slightly swelled in an arcuate shape by combining two plate-like members and a bone member. The air collecting plate 15 can also be assembled by being divided into a plurality of parts in the height direction and the width direction according to the height and width.

  The wind collecting plate 15 may be two or three if the direction of the wind is substantially constant throughout the year, but six is optimal for collecting the wind from all directions efficiently. . That is, as shown in FIG. 2, by installing six air collecting plates 15 around the cylindrical member 14 at equal intervals, at least two adjacent air collecting plates can be used regardless of the direction of the wind. Wind can be collected in the center by the wind plate 15 and guided into the wind tunnel 18. Although it is possible to install seven or more air collecting plates 15, the improvement in the air collecting effect is small and not economical for the increase in device cost.

  The wind collected by the air collecting plate 15 thus installed converges toward the apex of the triangle surrounded by the base 13 on the lower side and the top plate 16 on the upper side, so that the pressure increases. Into the wind tunnel 18.

  The cylindrical member 14 and the air collecting plate 15 can employ appropriate materials and manufacturing methods according to conditions such as the overall size of the wind power generator and the predicted maximum wind speed. In general, a metal material rich in corrosion resistance such as stainless steel or aluminum alloy is suitable, and a plate material such as a corrosion-resistant iron plate or FRP can be attached to a metal frame.

  The width dimension of the wind collecting plate 15 can be determined according to various conditions at the installation location of the wind power generator, and the height and diameter of the wind power generator (the diameter of a circle passing through the tip of the wind collecting plate 15). The ratio can also be determined arbitrarily. For example, if there is no height restriction, the height of the air collecting plate 15 may be narrowed by increasing the height to 100 m or 200 m or more, and if the installation area is sufficient, the height is kept low. The diameter of the air collecting plate 15 can be increased to 100 m or more. Usually, it is preferable to form the air as high as possible so that the air in the sky that is stable compared to the ground surface can be collected effectively. On the roof of a high-rise building or the like, sufficient wind power collection can be obtained even with a height or diameter of about several meters to 10 meters.

  As the strength of the wind power generator 10 as a building, the wind collecting plate 15 is provided in six directions with the cylindrical member 14 as the center, so the height of the cylindrical member 14 and the width of the wind collecting plate 15 are appropriately set. By doing so, it is possible to obtain sufficient strength against strong winds and earthquakes. Further, if necessary, a reinforcing member for connecting the air collecting plates to the tip of the air collecting plate 15 or the like can be provided, and an appropriate flexible structure can be adopted for earthquake resistance.

  The air intake port 17 is provided with an opening 17a in the wall plate by punching out the wall plate of the cylindrical member 14 into a rectangular shape inside the tube leaving the upper side, and is provided on the inner side (wind tunnel 18 side). Is formed with a wind guide 17b shaped to cover the top of the opening 17a. Further, on the outer side of the opening 17a, a backflow prevention means 19 that allows only the flow of wind from the outside of the tubular member 14 toward the inside of the tubular member 14 is provided.

  The backflow prevention means 19 includes a valve box 19a that opens on the side of the air intake port 17 and the lower side, a valve seat part 19b that is provided at the lower part of the valve box 19a, and a spherical valve body 19c that opens and closes the valve seat part 19b. The spherical valve body 19c is floated by the wind pressure in the valve box 19a when the pressure on the outside of the wind intake port 17 is higher than that on the inside. As a result, the valve seat portion 19b and the opening 17a communicate with each other, and when the pressure on the inner side becomes higher than that on the outer side, the spherical valve body 19c is pressed against the valve seat portion 19b by its own weight and wind pressure, thereby closing the valve seat portion 19b.

  Therefore, the backflow prevention means 19 positioned on the windward side is automatically opened by the wind pressure, and the backflow prevention means 19 other than the windward side is automatically closed. The backflow prevention means 19 can also employ a swing type or spring type check valve structure. Further, by making the spherical valve body 19c made of rubber, the adhesion with the valve seat portion 19b is improved, and a reliable closed state is obtained.

  The wind intake port 17 and the backflow prevention means 19 formed in this way can prevent rainwater from entering the wind tunnel 18 from the opening 17a by opening only the lower side of the valve box 19a, and the wind guide The wind flow toward the lower generator chamber 11 can be formed in the wind tunnel 18 by 17b. Further, since the wind taken into the wind tunnel 18 is prevented from being blown out by the backflow prevention means 19, the wind taken into the wind tunnel 18 can be used effectively for power generation.

  The size (flow rate) and the number of installations of the air intake port 17 are set according to the amount of air collected by the air collecting plate 15, and if the width of the air collecting plate 15 is small, the number of installations is small or small. When the air intake port 17 is used and the width of the air collecting plate 15 is large, the number of installations may be increased to make the air intake port 17 large.

  The generator room 11 provided in the basement is provided with a turbine 21 that is rotationally driven by wind taken into the wind tunnel 18, a generator 22 that is driven by the turbine 21, and other power transmission equipment. . As the turbine 21 and the generator 22, those corresponding to the wind pressure and the amount of air supplied from the wind tunnel 18 to the turbine 21 can be selected and used. To select. Further, a plurality of turbines 21 and generators 22 may be provided for one wind tunnel 18 so that the number of operating generators 22 is increased or decreased according to the wind speed.

  On the other hand, surplus wind discharge portions 23 and 24 for discharging excess wind taken into the wind tunnel 18 are provided at both upper and lower ends of the wind tunnel 18. The surplus wind discharge sections 23 and 24 are for preventing an overload of the turbine 21 during a strong wind, and when the pressure in the wind tunnel 18 exceeds a preset pressure, the pressure from the wind tunnel 18 to the outside is increased. Can be used, for example, a pressure holding valve, and the same structure as the backflow prevention means 19 and the weight of the spherical valve body 19c adjusted according to the set pressure can be used. .

  The operating pressures of the surplus wind discharge sections 23 and 24 can be set to be the same, but it is preferable to set the operating pressure of the lower surplus wind discharge section 23 low in consideration of the flow of wind in the wind tunnel 18. Moreover, although the exhaust flow rate in the surplus wind discharge parts 23 and 24 can also be made the same, when the time of strong winds, such as a typhoon, is considered, the exhaust flow rate of the upper surplus wind exhaust part 24 which set the operating pressure high is set much. As a result, in the normal wind power fluctuation range, only the lower surplus wind discharge section 23 with a low operating pressure is operated to discharge a small amount of surplus wind without disturbing the wind flow in the wind tunnel 18. When a strong wind such as a typhoon is used, the upper surplus wind discharge unit 24 having a high operating pressure is also operated to discharge a large amount of surplus wind, thereby reliably protecting equipment such as the turbine 21.

  Moreover, the surplus wind discharge part can also be provided toward several directions so that an exhaust direction can be turned to the leeward side. Furthermore, an automatically adjustable surplus wind discharge unit that automatically adjusts the displacement according to the power generation state of the generator 22 may be provided. Further, it is preferable to provide a drain for discharging moisture in the wind tunnel 18 at the bottom of the wind tunnel 18.

  Furthermore, in order to prevent foreign matter from entering the wind tunnel 18 from the wind intake port 17, it is preferable to install a screen 25 outside the wind intake port 17. The screen 25 can be formed by using, for example, a normal wire mesh, and the four sides of the rectangular wire mesh 25a are held by a frame 25b, and this frame 25b is appropriately placed between adjacent air collecting plates 15 in the vertical direction. It can be installed at a predetermined position by being supported by a horizontal support member 26 provided at an appropriate interval. Further, by providing the support member 26, the vicinity of the base portions of the adjacent air collecting plates 15 can be connected to reinforce the base portion of the air collecting plate 15. Furthermore, by providing a ladder (step) 27 in the vicinity of the base of the air collecting plate 15, the backflow prevention means 19 and the screen 25 can be maintained and inspected.

  In this way, by combining the cylindrical member 14 and a plurality of, particularly six, air collecting plates 15 as the air collecting means 12 in the wind power generator 10, the wind from various directions is effectively collected to generate power. Therefore, sufficient power output can be obtained even in a low wind condition. Further, the necessary power supply can be stably performed by selecting the height and diameter according to the conditions of the installation location. Further, in the relatively small wind power generator 10, the air collecting means 12 can be unitized by combining a bottom plate in place of the base 13, and a plurality of these units can be stacked and used.

  The top surface of the top plate 16 can be used for various purposes depending on the height and width of the top plate 16. For example, a wind power generator installed on a remote island or a remote island can be used as a heliport even in a flat state, and a radio tower, a radio relay station, a weather station, an astronomical observation station, etc. can be installed on the top plate 16. Furthermore, if it is a wind power generator installed in an urban area or a suburb, the side surface 15a of the air collecting plate 15 can be used for advertising purposes, and the air collecting plate 15 may be colored or patterned according to the surrounding landscape. It is also possible to light up at night. In addition, when the height of the top plate 16 exceeds a predetermined height, it is necessary to install an aviation obstruction light or to apply a predetermined paint color based on regulations.

  7 and 8 show an example in which a building is installed on the wind power generator of the present invention, FIG. 7 is a front view, and FIG. 8 is a cross-sectional view. In the present embodiment, a building 31 having a hexagonal shape in plan view is constructed corresponding to a straight line connecting the tips of the air collecting plates 15, and an antenna 33 is installed on the rooftop 32. Further, a plurality of horizontal work floors 34 are provided between the air collecting plates 15, and a plurality of support columns 35 for supporting each work floor 34 and the building 31 are provided. In addition, in this embodiment, the elevator 36 is accommodated in the air collecting plate 15 so that the elevator 31 can be easily moved up and down.

  For example, when considering a wind power generator having a height of about 150 m and a wind collecting plate 15 having a diameter of about 100 m for large-scale power generation, the outer diameter of the cylindrical member 14 forming the wind tunnel 18 is about 10 m. Since the outer periphery of the cylindrical member 14 is about 30 m, it is about 2.5 m when divided into 12 equal parts. If the width dimension of the portion where the air intake port 17 is provided is somewhat narrowed, the thickness of the base portion of the air collecting plate 15 can be reduced to about 3 m, so that the elevator 36 and the emergency staircase are accommodated inside the air collecting plate 15. There is enough space to do. Further, the bottom of the air collecting plate 15 can be used as a passage 37 to the elevator 36.

  If a sufficient space cannot be obtained at the base of the air collecting plate 15, an elevator can be provided at an intermediate portion or a tip portion of the air collecting plate 15. Moreover, when providing an elevator, it is desirable to provide in the part which becomes an average leeward side, and it is also possible to disperse and provide in two or more directions as needed.

  By installing the elevator 36 in this manner, the inside of the building 31 can be used as an observation floor or a restaurant that can be used by ordinary people, and as an office of a business operator that manages and uses the antenna 33 Can also be used. Therefore, not only a function as a wind power generator but also various functions can be added.

  When the size of the wind power generator 10 is estimated, for example, the wind tunnel diameter is 0.3 m, the height is 3 to 5 m, and the diameter is about 1 to 2 m. Yes, if the wind tunnel diameter is 0.6m, height 40m, diameter 4m, it will be a small building or condominium. If it is 1m, height 80m, diameter 10m, it will be 2m. If the height is about 100 m and the diameter is about 20 m, it will be a large factory or local power generation facility. If it is larger than that, for example, the wind tunnel diameter is 3 m, the height is 150 m, the diameter is 50 m, and the wind tunnel diameter is 4 m By constructing a wind power generator 10 with a diameter of 80m, a wind tunnel diameter of 10m, a height of 300m, and a diameter of 200m, it is sufficient as a power generation facility in urban areas, suburbs, industrial parks, etc. It is available.

It is a partial cross section front view which shows one example of the wind power generator of this invention. It is a cross-sectional view similarly. It is a longitudinal cross-sectional view of an apparatus center part. It is a cross-sectional view of the central part of the apparatus. It is a longitudinal cross-sectional view of the apparatus lower part. It is a longitudinal cross-sectional view which shows an example of a backflow prevention means. It is a front view which shows the example which installed the building in the upper part of the wind power generator of this invention. It is a cross-sectional view similarly.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Wind power generator, 11 ... Generator room, 12 ... Wind collecting means, 13 ... Base, 14 ... Cylindrical member, 15 ... Wind collecting plate, 16 ... Top plate, 17 ... Wind intake, 17a ... Opening, 17b ... Wind guide, 18 ... Wind tunnel, 19 ... Backflow prevention means, 19a ... Valve box, 19b ... Valve seat part, 19c ... Spherical valve body, 21 ... Turbine, 22 ... Generator, 23, 24 ... Excess wind discharge part, 25 ... Screen, 26 ... Support member, 27 ... Ladder, 31 ... Building, 32 ... Rooftop, 33 ... Antenna, 34 ... Work floor, 35 ... Post, 36 ... Elevator, 37 ... Passage

Claims (3)

  A wind tunnel made of a cylindrical member erected in the vertical direction from the base surface, a plurality of air collecting plates extending in a normal direction from the peripheral wall of the tubular member, and between the air collecting plates and the upper end of the tubular member A top plate that closes the opening; a plurality of air intakes that are provided on a peripheral wall of the tubular member and that guide the air collected by the air collecting plate into the wind tunnel; and are provided at the air intake port. Backflow prevention means that allows only the flow of wind from the outside of the tubular member to the inside of the tubular member, a turbine driven by wind blown from one end of the wind tunnel, and a generator driven by the turbine A wind power generator characterized by   6. The wind power generator according to claim 1, wherein six wind collecting plates are provided at equal intervals in a circumferential direction of the cylindrical member.   The wind turbine generator according to claim 1 or 2, wherein a surplus wind exhaust unit that exhausts excess wind taken into the wind tunnel is provided in the wind tunnel.

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