JP2010001881A - Booster wind turbine-wind tunnel body for wind power generation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To integrate a booster wind turbine with a tubular wind tunnel body, for which a speed regulating wind turbine is provided to utilize a function thereof in a very simple configuration, which incorporate therein both a function to accelerate air flow in the wind tunnel and a governor function to stabilize the air flow, which produce stabilized power generation output from weak wind to specific strong wind, and which can be readily moved and installed as for selection of the installation site and thus are almost costless in construction. <P>SOLUTION: Under the weak wind, wind is collected to a vicinity of an air flow inlet by rotation of the booster wind turbine. Further, back pressure in the wind tunnel is lowered by means of the speed regulating wind turbine to circulate a large amount of air flow into the wind tunnel. In addition, swirling air flow is generated in a vicinity of a wind tunnel exhaust port and the back pressure in the wind tunnel is lowered to accelerate the air flow circulated in the wind tunnel. Within a range of specific wind speed, the circulated air flow in the wind tunnel is regulated and the power generation output of a power generator is smoothed to enhance efficiency. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a booster wind turbine wind tunnel body in which a cylindrical wind tunnel body used for wind power generation and a wind turbine provided outside thereof are integrated and a governing wind turbine is provided in order to utilize this function.

  The conventional one is installed on the ceiling of a road tunnel or the like, and ventilates the tunnel with its jet (for example, see Patent Document 1).

  In addition, a wind power generator is installed in the wind tunnel, the pressure is reduced by smoothly expanding the wind tunnel in the direction of the wind flow, and at the same time, it is effective by the hook-shaped piece provided outside the edge of the outlet of the wind tunnel body 2. Description of the Related Art A wind power generator that rotates a power generating wind turbine and generates high output power by rotating the wind turbine is known. (For example, refer to Patent Document 2.)

  In addition, the wind turbine generator provided in the wind tunnel has a pair of wind tunnels facing each other so as to expand from the wind inlet to the outlet, and a hook-shaped piece outside the wind tunnel outlet. And a wind speed increasing device capable of increasing the speed of wind flow more efficiently by arranging a wind turbine for power generation at a wind power take-out position near the inlet and controlling the back pressure, and the same Wind power generators are known. (For example, see Patent Document 3)

  In addition, a plurality of boss heads and corresponding propeller type axial flow turbofans are provided in series inside the wind tunnel, and an exhaust fan that forcibly exhausts air to generate airflow inside the wind tunnel is provided at the wind outlet. Wind tunnel members are known. (For example, see Patent Document 4)

As a wind turbine start assist device for a wind power generator, there is known a device that provides a power generation wind turbine and a start wind turbine and applies the wind to the start wind turbine with an electric fan to assist the start of the power wind turbine. (For example, see Patent Document 6)
JP-A-9-126194 JP 2003-278635 A JP 2003-328922 A JP 2004-190506 A JP 2006-144701 A JP 2007-1000055 A Patent No. 3529155 registered

  However, the conventional booster fan described in Patent Document 1 was developed specifically for the purpose of exhaust in the road tunnel, and it is appropriate that the wind tunnel itself is a road tunnel and is used for general purposes as a general purpose product. There is a problem that is not.

  Moreover, in the conventional wind tunnel body described in Patent Document 2, the inclination angle of the wind tunnel inner wall surface with respect to the axis of the wind tunnel body is set to a relatively small value of 5 to 25 degrees. In order to obtain a sufficient pressure gradient in such a wind tunnel, if the length of the wind tunnel is L and the inlet diameter is D, this value is the length of the wind tunnel with L / D => 1 or more. Patent Document 2 shows that the ratio of the length L of the wind tunnel body and the inlet diameter D is L / D = 1.25. (Patent Document 5) (0004) cited.

  Furthermore, in the invention described in Patent Document 2, since the wind flow diffuses in three dimensions (circumferential direction) behind the long wind tunnel body, a weak vortex is formed. Therefore, in the case of a long tubular wind tunnel, the inventor himself points out that the back pressure is not so low, and the speed increasing effect by this back pressure is relatively small. (Patent Document 3) (Problem to be solved by the invention) (0008) cited.

  In addition, the wind speed increasing device described in Patent Document 3 and the wind power generator using the same have improved the configuration of the wind tunnel body of the wind power generator described in Patent Document 2 from a cylindrical type to a wall shape. The wind passing between the pair of painting walls is caught while being diffused secondarily behind the outlet, and the wind passing outside the wind tunnel is also diffused secondarily behind the wind tunnel. It is a mechanism that is involved and forms a very strong vortex behind the wind tunnel.

  However, in the conventional wind power generation device described in Patent Document 3, the device itself is enlarged, and the wind pressure received on the side of the painting wall is increased. Therefore, the strength of the housing is required, the weight is increased, and the entire mechanism is increased. Use is also limited from the installation area. Furthermore, it is difficult to track quickly against irregular changes in wind direction and wind speed in the natural environment.For this reason, wind force blown from the outer surface of the painting wall or behind the painting wall makes it close to the outlet of the painting body. There is a problem that vortex formation cannot be expected and it cannot be used easily.

  In addition, the device of Patent Document 4 is provided with a streamlined boss head mechanism for constricting the inside of a plurality of wind tunnels in series, and in each of which an axial flow turbo type fan having a propeller is provided, the first stage, the second stage, the third stage, and the like. In order to eliminate the influence of the axial-flow turbo fan having the rear stage propeller at each stage because it is influenced by the rotating component of the air flow by the front stage fan (of the mechanism shown in Patent Document 4) Even if the wind speed in the wind tunnel is estimated to be about 5 m / S, it is desirable to leave an interval of 10 times or more the rotation diameter of the propeller. In order to eliminate the resistance in the wind tunnel by installing an exhaust fan at the exhaust port and increase the rotation of the wind fan by amplifying the wind force, the exhaust fan needs to compensate for the energy loss of the number of generator fans installed. Driving energy of, it is necessary to more energy out take from the generator, there is a problem that realization can not be expected.

As a means for solving the above-mentioned problems, the present invention provides a plurality of radii having a concave notch between a cylindrical outer ring and a rotating shaft, radially provided at regular intervals in the circumferential direction around the rotating shaft. This is a very simple structure in which the notch concave surface is fitted and integrated with a gap between the exhaust holes of the cylindrical wind tunnel body.

  When the booster windmill that rotates around the outer periphery of the cylindrical wind tunnel body by the airflow flowing in the axial direction from the windward side to the leeward direction is in rotation mode, the booster windmill is driven to rotate to reduce the back pressure in the tubular wind tunnel body. When the booster wind turbine is in the rotation stop mode, it has a function of accelerating the air flow, forming a spiral air flow at the exhaust edge of the cylindrical wind tunnel body, reducing the pressure, and flowing the air flowing through the cylindrical wind tunnel body by the static pressure of the atmosphere Has a function to accelerate.

  In order to promote self-starting of the wind turbine for power generation under low wind, the wind floating near the air flow inlet of the cylindrical wind tunnel body is forcibly collected at the air flow inlet of the cylindrical wind tunnel body by the rotation of the booster wind turbine. It has a function to easily promote no-load startup of the windmill provided in the interior, and has a governor function to suppress and control the airflow with the rotating means of the governing windmill provided in the wind tunnel when strong winds exceed a certain value. A stable wind power generator from wind to strong wind becomes possible.

The present invention integrates a booster wind turbine and a cylindrical wind tunnel body that can provide a device having the following effects by the above configuration, and has a very simple configuration, and a function of accelerating the airflow in the wind tunnel. And the governor function to control the airflow in the wind tunnel, which has been a problem in the past. In addition, problems such as fluctuations in the generator output due to sudden and repeated changes in strength can be facilitated without the need for complex mechanical mechanisms, and wind turbine startup can be facilitated. It is possible to smooth the power generation output, provide a wind power generator that is low in production cost, low in production cost, and versatile.

  The booster wind turbine and the cylindrical wind tunnel body can be miniaturized, and the air flow inlet of the cylindrical wind tunnel body can be tracked and controlled in response to sudden changes in wind direction and wind speed. The wind fuselage is not affected by the spiral airflow formed at the edge of the wind tunnel exhaust, with wind force blown from the side of the cylindrical wind tunnel body or behind the wind tunnel exhaust to quickly track the air flow inlet in the windward direction The structure can be easily manufactured.

  Also, when the wind speed is higher than the preset wind speed, the wind tunnel airflow entrance is turned 90 degrees with respect to the wind direction to avoid the strong wind flowing into the wind tunnel, and the reverse rotation control of the booster wind turbine and the governing wind turbine. By operating the governor mechanism that suppresses the airflow in the wind tunnel, it becomes possible to stop the damage of strong winds.

  By integrating the cylindrical wind tunnel body and the booster wind turbine, and making full use of the function that effectively uses the airflow flowing around the cylindrical wind tunnel body, it is possible to create a simple but highly efficient power generator, Temporary power supply for construction sites Also, it can be applied to fishing boats and outdoor power supplies with anti-corrosion treatment and guards, and it can be used as a general-purpose power supply. Also has the effect of spreading.

Best mode for carrying out the invention

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of the configuration also serving as an explanation of the operation of the embodiments. FIG. 2 is a perspective view of the main parts of a booster wind turbine according to the embodiments. .
FIG. 3 is a perspective view that also serves as an explanation of the main part of FIG.
FIG. 4 is a perspective view that also serves as an explanation for integrating the wind tunnel body and the booster wind turbine.
FIG. 5 is a configuration diagram that also serves to explain the operation of the embodiment.
FIG. 6 is a perspective view for explaining the airflow state and the eddy current generating means.
FIG. 7 is a perspective view also serving as an explanation of the air collecting means of the embodiment.

2 and 3 As shown in FIG. 5, the shape of the radiant 3 provided between the cylindrical outer ring (hereinafter referred to as the outer ring) 1 and the rotating shaft 2 that supports the outer ring is changed to a blade-like shape 5, and further in the radial direction. A concave notch 4 is provided at a position 8 that fits with the exhaust port edge 7 of the wind tunnel body at the front end portion. A plurality of (three in FIG. 2 in FIG. 2) radii are provided radially at regular intervals in the circumferential direction around the rotation axis, and the aperture is adjusted in the circumferential direction of the notch concave surface provided in the radiant. (34 in FIG. 4) A concave notch surface of a radiant rotating around the rotation axis is rotatably attached to a gap fit 8 at an exhaust port edge 7 of a cylindrical wind tunnel body (hereinafter referred to as a wind tunnel body) 6 so as to be integrated. The booster wind turbine 11 is rotated by the airflow that flows in the direction of the windward side 37 from the windward side 36 in the axial direction in the vicinity of the outer periphery of the wind tunnel body.

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The embodiment of the present invention is an example in which a part of the wind power generator of FIG. 5 is cast.
In this case, as a spiral vortex generating means, a plurality (8 in FIG. 2) are arranged radially at regular intervals in the circumferential direction between the outer peripheral surface of the exhaust port edge 7 of the wind tunnel body 6 and the outer ring 1. The rectifying deflection plate 9 is provided in the outer ring “with a gap (8 in FIG. 5) so as not to slide on the outer peripheral surface of the wind tunnel body”, and the angle thereof is the same as the angle of the blade-shaped radiant 3. When the booster wind turbine 11 is in the rotation stop mode, an air flow (21 in FIG. 6) flowing in the axial direction in the vicinity of the outer periphery of the wind tunnel body from the leeward side 36 to the leeward side 37 is generated by the rectifying deflecting plate 9 as airflow. Is deflected and swirled 22 from the axial direction to the circumferential direction to generate a spiral airflow (24 in FIG. 6) in the vicinity of the wind tunnel body exhaust port.

  Further, as a means for obtaining the synergistic effect of the generation of the spiral air flow shown in the above embodiment, the governing wind turbine 14 and the motor / generator 17 are provided in the vicinity of the wind tunnel exhaust edge 7. When the motor / generator 17 is rotated by being joined to the rotating shaft 15b of the governing wind turbine 14 via the clutch b16 provided on the output shaft of the motor / generator 17, the governing wind turbine 14 is also rotated by the transmission, and as a result. The airflow 23 is discharged from the wind tunnel body 10, and the discharged airflow is deflected in the circumferential direction from the axial direction (23 in FIG. 6) by means of the angle of attachment of the radiation 3 of the booster windmill in the rotation stop mode. The air flow 24 deflected 22 in the circumferential direction from the axial direction 21 by means of the deflected circumferential velocity component 24 and the means of the non-rotating rectifying deflection plate (9 in FIG. The direction velocity component and the rotation composition 24 are combined to generate a stronger spiral airflow, thereby reducing the pressure in the wind tunnel body 10 and accelerating the airflow in the wind tunnel.

As a part of the wind power generator shown in FIG.
The booster wind turbine 11 includes a brake 18 attached to the rotation shaft 2 of the booster wind turbine 11 and a speed control wind turbine 14 in which the rotation direction of the clutch a 12 is joined to the speed control wind turbine shaft a13. The wind tunnel outer periphery is rotated by the airflow 21 flowing in the direction of the windward side 37 from the windward side 36, and the governing wind turbine 14 is rotated by transmission of the rotated driving force, thereby reducing the back pressure in the wind tunnel 10. The airflow 20 flowing through the wind tunnel body is accelerated.

  When the energy density of the airflow flowing through the cylindrical wind tunnel body 10 is low under a slight breeze and self-starting is difficult due to factors such as gogging due to frictional resistance on the shaft of the generator wind turbine 31 or magnetic resistance of the DC generator, When the output of the generator 32 does not reach a predetermined value, the rotation around the outer periphery of the cylindrical wind tunnel body 6 is transmitted by transmission of the rotational drive of the booster wind turbine 11 rotated by the airflow 21 flowing in the axial direction from the windward side 36 toward the leeward side 37. The driving energy of the governing wind turbine 14 and the governing wind turbine 14 that is rotated by the energy of the airflow flowing through the tubular wind tunnel body 10 is taken out by operating the motor / generator 17 with the combined driving force to extract a small amount of power. It is possible to store electric power even in the breeze area.

This will be described with reference to FIG.
As a countermeasure to the problem that the start and stop operations of the wind power generator are frequently repeated under a light wind, the governing wind turbine 14 is rotated by the rotational drive of the motor / generator 17 according to the configuration of the previous embodiment. By transmitting the fast wind turbine axis a13 and simultaneously rotating the booster wind turbine 11, the wind in the vicinity of the wind tunnel body is forcibly sucked in the direction from the windward side 36 toward the windward side 37. At the same time, it is guided to the wind tunnel body air flow inlet 30 and, at the same time, the air flow inside the wind tunnel body 10 is also discharged 23 by the rotation of the governing wind turbine 14, and as a result, the back pressure also falls and floats 25 near the wind tunnel body air current inlet. A large amount of the collected airflow 19 flows into the wind tunnel 30, so that the windmill 31 can be started easily.

Further, for the problem that the change in the speed of the airflow flowing through the wind tunnel body 10 is frequently repeated, the speed of the airflow 20 flowing through the wind tunnel body 10 is regulated within a certain range. As its means, the booster windmill 11 is rotated by the airflow 21 flowing in the vicinity of the outer periphery of the wind tunnel body. The governing wind turbine 14 also rotates at the same time via the brake 18 and the clutch a <b> 12 provided on the rotating shaft 2 of the booster wind turbine 11. The clutch a12 having means for switching the rotational direction of the governing wind turbine 14 to the right or left direction is processed by the control device 35 in accordance with the information of the wind pressure / wind speed sensor provided in the wind tunnel. It is switched by means of a signal. From the above mechanism, the rotational energy of the booster wind turbine 11 rotated by the air flow 21 flowing in the vicinity of the outer periphery of the wind tunnel body is changed in the distribution direction by the right or left rotation of the governing wind turbine 14, and the converted air flow and the wind tunnel entrance There is provided a governor mechanism in which the flowing airflow 20 in the wind tunnel that has flowed in is opposed to each other in the wind tunnel 10 and is adjusted to an energy density that is set to a predetermined value in advance.
Since the subject of the present invention is the method of mounting and utilizing the windmill and wind tunnel body utilizing the airflow, the description of the electronics and the mechanism system will be omitted.

  Since the power generation output of the wind turbine generator strongly depends on the energy density of the wind, it is indispensable to reflect the wind information in the power generator, and the wind direction / wind velocity sensor 27 is used as a means for collecting the information. The position 26 intersects perpendicularly with respect to the outer peripheral point and the rotatable holding rod point. In addition, the electronic control unit 35 includes a storage / calculation / signal processing function and the like as means for processing information collected by the sensor.

  The wind direction / wind speed sensor 27 detects the information of the wind direction / wind speed, transmits the measured numerical value to the electronic control unit 35, processes the signal based on the measured numerical value, and transmits the instruction to the tracking drive control device 29. In accordance with the instruction, the tracking drive control device 29 performs tracking driving in the windward direction 36 of the airflow inlet 30 of the wind tunnel body.

When the wind is stronger than the predetermined value, the wind tunnel body 30 is automatically rotated 90 degrees with respect to the wind direction to avoid the strong wind 19 flowing into the wind tunnel and to adjust with the booster wind turbine 11. The governor mechanism that suppresses the airflow in the wind tunnel by the rotation control of the high speed wind turbine 14 operates, and it is possible to stop the damage of the strong wind by that means.
Although many methods are already known for this tracking control device, it is also possible to apply the turning mechanism part already invented by the applicant (see Patent Document 6).

  In addition, the wind speed / wind pressure / rotation sensor continuously detects the time and time, and the numerical value is transmitted to the electronic control unit 35, and the motor / generator 17 is rotated clockwise by the signal processed based on the information. Alternatively, the function of the wind turbine wind tunnel body is achieved by controlling the left rotation and the rotation speed in combination with the electronic brake of the motor / generator 17, the clutch a12, and the brake 18 as the control means.

  Therefore, the wind power generator 38 is provided in the booster wind turbine wind unit having the mechanism described in the above embodiment, and the configuration is provided with the wind turbine 31 near the air flow inlet 30 of the wind tunnel body 6 and is rotated by the air flow 20 flowing in the wind tunnel body. And a generator 32 integrated with the wind turbine, and further, the booster wind turbine wind turbine is supported by a pivotable support rod 28 in the axial direction of the wind tunnel near the fulcrum where the weight of the wind tunnel body is balanced. In addition, the tracking drive device 29 integrated with the support rod is provided, and the wind tunnel body airflow inlet 30 can be quickly tracked in the windward direction 36 even in response to a sudden change in the wind direction or wind speed. Wind power blown from the back into the vicinity of the side or wind tunnel body exhaust port has the effect that the structure of the wind tunnel body can be simplified without being affected by the spiral airflow formed at the wind tunnel exhaust edge 7.

  By integrating the wind tunnel and booster wind turbine, and using multiple functions in combination with the airflow 21 flowing around the outer periphery of the wind tunnel body, a simple yet highly efficient power generator is possible. In addition, the installation power source and the use of a salt-proof treatment as a general-purpose power source for fishing boats will spread, and if mass production proceeds, the production cost will be reduced, and there will be an effect of widespread use in general households in the future.

It is a description perspective view of the basic composition of an example. It is the perspective view which served as explanation of the principal part. FIG. It is a perspective view of the booster windmill wind tunnel body which served also as Example description. It is a basic composition explanatory view of an example. It is explanatory drawing of the eddy current production | generation means of an Example. It is explanatory drawing of the wind collection means of an Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cylindrical outer ring 2 Booster windmill rotating shaft 3 Radiation 4 Concave notch 5 Blade shape 6 Cylindrical wind fuselage 7 Exhaust port edge 8 Crevice fitting fitting part 9 Rectification deflection plate 10 Cylindrical wind fuselage inside 11 Booster windmill 12 Clutch a
13 Controlled wind axle a
14 Controlled wind turbine 15 Controlled wind turbine shaft b
16 Clutch b
17 Motor / Generator 18 Brake 19 Airflow into the wind tunnel 20 Airflow inside the wind tunnel 21 Airflow around the wind tunnel 22 Airflow deflected in the circumferential direction 23 Airflow discharged outside the wind tunnel 24 Synthetic airflow 25 Floating collective airflow 26 Sensor installation position 27 Wind direction wind speed sensor 28 Swivel support rod 29 Tracking drive device 30 Near airflow entrance 31 Windmill 32 Generator 33 Booster windmill wind tunnel 34 Wind tunnel diameter 35 Electronic control unit 36 Windward 37 Windward 38 Wind power generator

Claims (9)

  A windmill having a cylindrical outer ring is provided at the exhaust port edge of the cylindrical wind tunnel body so as to protrude from the outer peripheral surface of the cylindrical wind tunnel body. The wind turbine forms a wind turbine blade by making the radiation provided between the cylindrical outer ring and the rotating shaft supporting the cylindrical outer ring into a blade shape. In addition, a concave notch is provided at the radial tip portion “at a position that fits the exhaust port edge of the cylindrical wind tunnel body” at the radial end portion. Further, a plurality of the radii are provided radially at regular intervals in the circumferential direction around the rotation axis, and the notched concave surface provided in the radiant has a free space in the exhaust port edge of the cylindrical wind tunnel body. A wind turbine booster wind tunnel body, characterized by being fitted and integrated.   A plurality of rectifying deflecting plates are radially arranged at regular intervals in the circumferential direction between the outer peripheral surface of the exhaust port edge of the cylindrical wind tunnel body and the cylindrical outer ring of the windmill. It is provided on the cylindrical outer ring of the windmill with a gap so that it does not slide. The wind turbine booster wind tunnel body for wind power generator according to claim 1, wherein the mounting angle is set in the same direction as the angle of the blade-like radiation. A windmill (hereinafter referred to as a speed-controlling wind turbine) for controlling the airflow flowing through the wind tunnel body is provided near the exhaust port edge inside the cylindrical wind tunnel body. As a means for rotating the speed-controlling windmill, A clutch a capable of switching between right rotation and left rotation is also provided.
3. The clutch a according to claim 1, wherein the clutch a is joined to a rotating shaft of a speed controlling wind turbine, and the speed controlling wind turbine is rotated by transmission of a driving force rotating by the booster wind turbine. Booster windmill wind tunnel body for any wind power generator.   An electric generator / generator is provided in the cylindrical wind tunnel, and a clutch b is provided on the output shaft. The clutch b is integrated with the governing wind turbine shaft. The governing windmill rotates. As a result, the airflow is discharged from the inside of the wind tunnel body, and the discharged airflow is deflected in the circumferential direction from the axial direction by means of the “radiation mounting angle” of the stationary booster windmill, and the deflected circumferential direction The wind turbine body booster wind turbine body according to any one of claims 1 to 3, wherein a swirl airflow is generated in the vicinity of the wind tunnel body exhaust port with the velocity component.   A wind direction / velocity sensor is provided in the vertical position on the outer periphery of the air flow inlet of the cylindrical wind tunnel body with respect to the swivel support rod. In addition, a tracking drive device is provided in the vicinity of a fulcrum where the weight of the cylindrical wind tunnel body is balanced in the axial direction of the cylindrical wind tunnel body, with the cylindrical wind tunnel body supported by a pivotable support rod and integrated with the support rod. The booster windmill wind tunnel body for a wind power generator according to any one of claims 1 to 4, wherein the wind turbine body is a wind tunnel body.   To provide a generator integrated with the windmill near the airflow inlet in the cylindrical wind tunnel, and to provide a power storage unit for storing the generated power outside the cylindrical wind tunnel, and to manage the air flow situation in the cylindrical wind tunnel 6. The wind turbine booster wind turbine generator for wind turbine according to claim 1, wherein a wind speed sensor, a wind pressure sensor, and a rotation sensor are incorporated in the generator or individually provided.   Rotating operation of the motor / generator, governing wind turbine, and booster wind turbine based on the information detected by the wind speed sensor, barometric sensor, and rotation sensor built in or separately installed in the generator in the cylindrical wind tunnel The wind power according to any one of claims 1 to 6, further comprising a mechanism for electronically controlling the rotation speed, non-rotation digitally, and the rotation speed in an analog manner in a time-sharing manner. Booster wind turbine wind generator for generator.   The governing wind turbine rotates in the vicinity of the outer periphery of the cylindrical wind tunnel body by the transmission of the rotational force of the booster wind turbine rotating in the axial direction from the windward side to the leeward direction, and the airflow in the cylindrical wind tunnel body by means of the clutch a The flow is converted from “exhaust port side to air flow inlet direction”. In the cylindrical wind tunnel body, the energy of the converted airflow and the energy of the airflow flowing in the cylindrical wind tunnel flowing in from the wind tunnel entrance are confronted in the cylindrical wind tunnel body, and set to a predetermined value in advance. A wind turbine booster wind tunnel body for a wind power generator according to any one of claims 1 to 7, further comprising a governor mechanism that adjusts the energy density of the circulating airflow.   When the energy density of the circulating airflow in the tubular wind tunnel is low and it is difficult to start the wind turbine for generators, the booster wind turbine that rotates by the air current flowing from the windward side to the leeward side in the axial direction near the outer periphery of the tubular wind tunnel body 9. A wind turbine booster wind tunnel body according to any one of claims 1 to 8, further comprising a mechanism that uses an electric motor / generator as a second generator that is rotationally driven by means.

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