JPH1162811A - Wind-mill generating device using wind power repeatedly and strong-wind intercepting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wind-mill generating device, which has an excellent efficiency by making the most use of a wind power repeatedly, namely, by accelerating the wind speed in a wind tunnel and by hitting the wind against plural wind mills, and which can be installed not only in a spacious place but also on the housetop of a high building and also can be loaded on a running vehicle, because the area in the wind direction is small. SOLUTION: The subject strong-wind intercepting device is so composed that an intercepting plate 6 in the front part of the wind tunnel 1 is opened or closed by a reciprocating motion of a push-moving plate 7 connected with a driving device, corresponding to a wind-speed information from an anemometer 5, and to a wind-mill generating device composed of plural wind mills 2 and generators 3 connected therewith with an interval, or otherwise of a generator 3 and plural wind mills 2 connected therewith with an interval through the same shaft, installed in a wind tunnel 1 having a larger windward caliber and a smaller downwind caliber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind turbine power generation device that applies a wind introduced into a wind tunnel to a plurality of wind turbines sequentially and uses the wind power repeatedly to the maximum, and a strong wind cutoff device that stops the rotation of the wind turbine in a strong wind. .

[0002]

2. Description of the Related Art It is widely used to utilize the rotational force of a windmill for power generation. However, the shape of a windmill is most often a propeller type having two to four blades because of its high rotation speed. And a cross flow type windmill is used. In addition, the propeller type has a small rotating diameter of 6m to 30.
m and are often installed in large areas such as hills. These use the natural wind as it is, but a windmill has been proposed in which the wind is taken into the wind tunnel, the wind speed is accelerated, and then applied to the blades in order to increase the efficiency. For example, a device disclosed in Japanese Utility Model Laid-Open Publication No. 60-125368 discloses a wind turbine having a wind turbine and a generator arranged in a wind tunnel having an inlet having a flow path cross-sectional area larger than an outlet. It is described that the power generation efficiency increases because the wind power increases. Also, JP-A-9-888
The invention disclosed in Japanese Patent Publication No. 00 uses a quadrangular wind tunnel in which the windward entrance portion is maximized and the cross-sectional area through which the wind passes in the leeward direction is small, and a windmill is provided outside the wind tunnel outlet. It is described that wind power can be taken in a wide area without waste and the amount of power generation increases. Although the present invention makes the best use of the wind power repeatedly with a plurality of wind turbines, no such prior art is found.

[0003] Natural winds may not be wind speeds suitable for windmill power generation. If the wind speeds are faster than necessary, abnormalities occur in the rotation of the generator and power generation is not performed properly. In such a case, the windmill may be damaged. Therefore, in the case of a propeller-type wind turbine, to protect the wind turbine, the wing angle is changed according to the wind speed, and the wing area with respect to the wind direction is reduced in strong winds.When the wind speed exceeds the limit, the wing angle is changed. In order to stop the windmill by changing the direction of the windmill so as to be parallel to the flow of wind.

[0004]

In the wind turbine generator having the above-mentioned wind tunnel, the wind introduced into the wind tunnel hits the wind turbine near the end of the wind tunnel or outside the end of the wind tunnel, and the wind hitting the wind turbine is immediately released into the atmosphere. Is to be released. Therefore, the wind power is used only once, and the released wind still has a large amount of energy and is inefficient. Further, the wind control device for changing the angle of the blade is not only expensive, but also has a problem in the strength of the wind turbine. The present invention accelerates the wind speed in the wind tunnel, and uses a plurality of wind turbines spaced apart in the wind tunnel to repeatedly and maximally utilize the energy of the wind taken in, thereby reducing the wind direction area. In addition to being able to efficiently obtain a large amount of power, a simple device can stop the windmill in the event of a storm. It is an object of the present invention to provide a wind turbine generator that can be mounted on a traveling vehicle and supply electric power.

[0005]

According to a first aspect of the present invention, a plurality of wind turbines 2 are connected to a wind turbine 2 at intervals in a wind tunnel 1 having a large diameter on the windward side and a small diameter on the leeward side. And a plurality of generators 3 as described above.

According to a second aspect of the present invention, the rotating shafts 4 of the plurality of wind turbines 2 are coaxial and are connected to the rotating shaft 4 of one generator 3.

According to a third aspect of the present invention, in response to a change in wind speed information of an anemometer 5 provided on the wind tunnel 1, a door-shaped blocking plate 6 provided on the windward side of the wind tunnel 1 is provided. This is a strong wind shut-off device configured to be opened and closed by reciprocating motion of a pushing rod 7 attached to the driving device.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention of claim 1 will be described with reference to a partially cutaway side view of a wind turbine generator shown in FIG. The figure shows a state in which the blocking plate 6 is closed. The shape of the wind tunnel 1 is such that the diameter on the windward side is large, that is, the wind direction area is large, and the diameter on the leeward side is small, and the inner wall of the wind tunnel 1 has an acute angle with respect to the center line 8 of the wind tunnel 1. In addition, as shown in a partially cutaway side view of a wind turbine generator using a wind tunnel having a step portion in FIG.
There is also a wind tunnel 1 in which the inner wall of the wind tunnel 1 has an acute angle with respect to the center line 8 of the wind tunnel 1 and a portion parallel to the center line 8 of the wind tunnel 1 alternately and stepwise. In the wind tunnel 1 having this shape, the same number of stairs 9 as the number of the wind turbines 2 are provided. In addition,
In FIG. 2, the strong wind blocking device is omitted. The wind tunnel 1 has such a shape because the wind taken in from the intake hits the windmill 2 and the wind is weakened. Therefore, by passing through the narrow passage until reaching the next windmill 2, the wind speed is accelerated. This is for applying a strong wind to the windmill 2.

The number of wind turbines 2 installed in the wind tunnel 1 is plural, usually 2 to 6. The windmill 2 is installed at a predetermined interval in the wind tunnel 1, and a generator 3 is connected to a rotating shaft 4 of the windmill 2. In the wind tunnel 1 shown in FIG. 2 having a step portion 9, the wind turbine 2 is installed at a position where the inner wall of the wind tunnel 1 is parallel to the center line 8. The windmill 2 and the generator 3
The generator 3 is supported by a support 10 standing below the inner wall of the wind tunnel 1.
Alternatively, a predetermined position in the wind tunnel 1 is maintained by supporting the bearing of the rotating shaft 4.

A wind turbine 2 having a high rotation speed is suitable, and a propeller type having two to four blades is generally used. However, a wind turbine 2 having a slightly lower rotation speed, such as a turbine type or a fan impeller type, is used. Is also used. The size of the blade of the windmill 2 is
It has a rotation diameter slightly smaller than the inner diameter of the wind tunnel 1 at the position where the wind turbine 2 is installed. Therefore, wind tunnel 1
The closer to the end, the smaller the wind turbine 2 is sequentially installed.

Above the rear of the wind tunnel 1, there is provided a wind direction plate 11 for always pointing the wind intake of the wind tunnel 1 to the windward side. A wind tunnel support 13 is erected on a foundation 12 installed on the ground. At the upper end of the wind tunnel support 13, there is a rotary plate receiver 14 having a built-in bearing, and a rotary plate 15 provided at the center of gravity of the wind tunnel 1 is provided with a rotary plate. It is pivotally fitted to the receiver 14 and can be rotated easily. A storage battery 16 is placed on the foundation 12. In addition, a current supplied to an electric wire (not shown) that reaches the rotating plate 15 from the generator 3 flows to the storage battery 16 on the foundation 12 via the rotating plate 15, the rotating plate receiver 14, and the wind tunnel support 13, and is stored. It has become. The rotating plate 15 has a built-in slip ring.
5 reaches the electric wires in the rotary plate receiver 14 through the electrical contacts of the slip ring,
The electric power is transmitted to the storage battery 16 without the electric wire being twisted by the rotation of the wind tunnel 1. From the storage battery 16, power is transmitted to a transmission line or distributed to various electric appliances.

A second aspect of the present invention is a wind turbine generator in which the rotation shafts 4 of the respective wind turbines 2 are coaxial and the generator 3 is a single unit. This will be described with reference to a partially cutaway side view. The shape of the wind tunnel 1, the shape of the windmill 2, and the number of the windmills 2 are the same as those of the first aspect of the present invention. However, since one generator 3 is shared,
The rotation speed of each windmill 2 must be the same. For this reason, when the wind with reduced wind speed that passed through the first windmill 2 hits the second windmill 2, it must be at the same wind speed as the initial wind speed, and thus such wind speed is reached. Thus, the inclination angle of the inner wall of the wind tunnel 1 is designed. The wind turbines 2 have the same solidity ratio (the ratio of the blade area to the blade rotation area) so that the rotation speeds are the same.

A third aspect of the present invention relates to a safety device for the wind turbine 2, which is a partially cutaway plan view of the strong wind shutoff device showing a state where the shutoff plate of FIG. 4 is closed, and a shutoff plate of FIG. A description will be given with reference to a front view of the strong wind shut-off device showing a closed state and a partially cutaway plan view of the strong wind shut-off device showing a state where the shut-off plate of FIG. 6 is opened. The figure shows the case where the two blocking plates 6 are opened and closed right and left, and the dotted line indicates the position where the blocking plates 6 are opened. When the wind power becomes strong like a storm, it is necessary to limit the wind power or shut off the wind power to prevent damage to the wind turbine generator. The strong wind shut off device protects the wind turbine 2 by shutting off the strong wind Is what you do. Wind tunnel 1
An anemometer 5 is installed on the top and constantly transmits wind speed information. In front of the windward side opening of the wind tunnel 1, two double-walled shut-off plates 6 are pivotally mounted by a hinge 18 provided on a frame 17 surrounding the front of the wind tunnel 1 and are rotatable. The pushing rod 7 is pivotally supported by a bracket 19 provided on the blocking plate 6 at a position slightly away from the axis of the hinge 18, and the pushing rod 7 is reciprocated by a driving device.

The driving device shown in FIGS.
7 comprises a motor 20, a reduction gear 21, and a rack 22. As the motor 20, a reversible motor that can rotate both left and right is used. The motor 20 rotates forward or backward by the action of the microcomputer 23 receiving the wind speed information from the anemometer 5, and the rotation of the motor 20 is reduced by the reduction gear 21, and the pinion 24 which is the gear at the final position of the reduction gear 21 is rotated. However, the rack 22 is reciprocated by meshing with the rack 22. Since the end of the rack 22 is pivotally supported by the push rod 7, when the rack 22 moves to the windward side, the push rod 7 slides to the windward and pushes the bracket 19, so that the blocking plate 6 is moved to the windward side. When the rack 22 moves to the leeward side, the push rod 7 moves to the leeward side and the bracket 19 moves to the leeward side.
, The blocking plate 6 is closed.

The wind speed information of the anemometer 5 is processed by the microcomputer 23, and when the wind speed reaches a set value, for example, 20 m, a switch ON is output to the closing contact of the opening / closing switch 25 to close the electric circuit of the motor to the closing side. The shut-off plate 6 is operated so as to be closed, and when it becomes lower than the set value, the switch ON is output to the open side contact so that the motor 20 rotates in the reverse direction, and the electric circuit of the motor 20 is closed to the open side and rotated in reverse. , So that the blocking plate 6 is opened. When the blocking plate 6 is opened, the wind enters the wind tunnel 1, and when the blocking plate 6 is closed, the wind does not enter the wind tunnel 1 and the windmill 2 stops rotating. Since the drive of the driving device needs to be stopped when the blocking plate 6 is closed or opened, the microcomputer 23 operates so that the driving device continues to operate until these times are reached, and then the microcomputer 23 stops. The switch OF is output to the opening / closing switch 25. As the electric power for operating these electric devices, a part of the electric power obtained from one of the windmills 2 is stored in another storage battery 16 provided in the frame 17 for use.

The driving device includes the motor 20 and the rack 2
Various known means are adopted as long as the push rod 7 is reciprocated without being limited to the use of the push rod 2. For example, the electromagnetic switching valve is operated to open or close the shut-off plate 6 by the open / close switch 25, the high-pressure air in the pressure tank stored by the compressor is sent to the cylinder, and the piston is reciprocated to pivot on the piston. Means for reciprocating the push rod 7 may be used. A hydraulic piston may be used instead of a pneumatic piston.

The reciprocating drive actuator may be used to reciprocate the pushing rod 7 pivotally attached to the movable element of the actuator. A linear motor having no rotor and a reciprocating slider may be used. Alternatively, a slider in which the pushing rod 7 is pivotally supported may be used.

The blocking plate 6 is not limited to the above-described two rectangular double doors, but may be a single rectangular plate. Furthermore, although the above-mentioned blocking plate 6 opens and closes left and right, opening and closing may be in the vertical direction. The shape is not limited to the above-described rectangular shape, and may be two semicircles. In short, any shape may be used as long as it covers the opening of the wind tunnel 1.

Next, a method of using the wind turbine generator of the present invention will be described. When installing several units on the roof of a high-rise building,
At several locations on the roof, several foundations 12 are provided at intervals that do not hinder the rotation of the wind tunnel 1, and a wind turbine generator is mounted thereon. In addition, the storage battery 16 may be configured to collect the electric power of the respective generators 3 and store the electric power in the storage battery 16 installed in one place. When the wind blows, the wind direction plate 11 rotates the wind tunnel 1 so that the windward opening of the wind tunnel 1 faces in the windward direction. Each windmill 2 rotates and the generator 3 rotates to generate electric power, which is stored in the storage battery 16. When the wind direction changes, the wind tunnel 1 rotates in the wind direction due to the action of the wind direction plate 11.

A strong wind shutoff device is provided on the front surface of the wind tunnel 1. An anemometer 5 provided on the wind tunnel 1 always measures the wind speed, and the wind speed information is transmitted to the microcomputer 23. When the wind speed is within an appropriate range, no output is output. Is reached, the on-off switch 25 is turned on to close the electric circuit so that the driving device is activated.
N output. When the drive device pulls the push rod 7 to close the blocking plate 6, the wind does not enter the wind tunnel 1. When the wind speed falls below the set value, the microcomputer 23 outputs an open contact ON of the open / close switch 25, and the driving device operates to slide the push rod 7, so that the shut-off plate 6 rotates and opens. ,
The wind comes into the wind tunnel 1.

When the wind turbine generator is mounted on a traveling vehicle,
For example, in the case of the electric vehicle 26, as shown in a partially cutaway perspective view showing a state of being mounted on the vehicle in FIG.
A wind turbine generator is installed in 7. Since the wind turbine generator in this case uses only the wind from the traveling direction of the electric vehicle 26, the wind tunnel 1 does not need to rotate, and a wind turbine generator without the rotating plate 15 or the rotating plate receiver 14 is installed. And
The storage battery of the electric vehicle 26 is also used for the storage battery 16. While the vehicle is running, wind is taken into the wind tunnel 1 in the hood 27 from the front of the vehicle, and the windmill 2 and the generator 3 are rotated to generate electric power. The power of the storage battery can be supplemented with the obtained power.

[0023]

According to the wind turbine generator of the present invention, a small wind direction is obtained by repeatedly maximizing the use of wind energy by a plurality of wind turbines in the wind tunnel while accelerating the wind speed of the wind introduced into the wind tunnel. In addition to efficiently obtaining large power from the area and installing it on flat ground or hills, it does not require a large installation area, so it is installed in a narrow place such as the roof of a high-rise building to generate private power, or And has a remarkable effect that can be used for replenishing electric power. Further, by closing the blocking plate against a strong wind, there is an effect that breakage of a windmill or the like is completely prevented.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of a wind turbine generator.

FIG. 2 is a partially cutaway side view of a wind turbine generator using a wind tunnel having a step portion.

FIG. 3 is a partially cutaway side view of a wind turbine generator having a rotation axis of the wind turbine coaxial.

FIG. 4 is a partially cutaway plan view of the strong wind shutoff device showing a state where the shutoff plate is closed.

FIG. 5 is a front view of the strong wind shutoff device showing a state where the shutoff plate is closed.

FIG. 6 is a partially cutaway plan view of the strong wind shutoff device showing a state where the shutoff plate is opened.

FIG. 7 is a partially cutaway perspective view showing a state of being mounted on an automobile.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wind tunnel 2 Windmill 3 Generator 4 Rotary axis 5 Anemometer 6 Blocking plate 7 Pushing plate 10 Support 11 Wind direction plate 13 Wind tunnel support 14 Rotating plate receiver 15 Rotating plate 16 Electric storage ground 17 Frame 19 Bracket 20 Motor 22 Rack 23 Microcomputer 24 Pinion 25 open / close switch

Claims (3)

[Claims] In a wind tunnel (1) having a large diameter on the windward side and a small diameter on the leeward side, a plurality of windmills (2) and a plurality of generators (3) connected to the windmill (2) are provided. A windmill power generator that repeatedly uses wind power, provided at intervals. 2. The rotating shaft (4) of a plurality of wind turbines (2) is coaxial and connected to the rotating shaft (4) of one generator (3). A wind turbine generator that repeatedly uses the wind power described in the above. 3. A door-shaped shut-off plate (6) provided in front of the wind tunnel (1) on the windward side in response to a change in wind speed information of an anemometer (5) provided on the wind tunnel (1). A strong wind shut-off device, characterized in that a push rod (7) attached to a plate (6) is opened and closed by reciprocating motion of a driving device.