JP2008063961A - Wind and water turbine concentric rotary shaft direct drive type electric energy extracting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wind and water turbine concentric rotary shaft direct drive type electric energy extracting device which acquires power generation energy equivalent to a doubled flow velocity through the relative rotations by connecting the rotation of a pair of front and rear propellers reversely rotated with each other directly to a rotating element and stator of a generator in a horizontal rotary shaft wind and water turbine and by connecting the rotation of a pair of upper and lower impellers reversely rotated with each other directly to the rotating element and stator of the generator in a vertical rotary shaft wind and water turbine. <P>SOLUTION: In a wind and water turbine concentric rotary shaft direct drive type electric energy extracting device, wind and water turbines having a horizontal rotary shaft or vertical rotary shaft are respectively provided with concentric rotary shafts and composed of a set of two units rotated in the directions opposite to each other. An outside rotary shaft and inside rotary shaft are provided with one-way clutch bearings rotated opposite to each other respectively. A propeller or impeller in a first wind and water turbine has a longer diameter than that in a second wind and water turbine. One rotary shaft is taken as a rotor of a generator and the other rotary shaft is taken as a stator. The device acquires power generation energy equivalent to a doubled flow velocity through these relative rotations. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a wind turbine concentric rotating shaft direct drive type electric energy extraction device in which the shafts of a pair of wind turbines having the same rotation axis and the rotation directions of which are opposite to each other are used as a rotor and a stator of a generator.

Since the average flow velocity of wind and water is low, a speed increaser such as a gear for transmitting the rotation of the wind turbine shaft to the generator is indispensable in order to convert these flows into electric energy. However, it has become an important issue to solve problems such as loss of energy drive by gears, competing destruction of gears due to wind gusts, friction noise between gears, and high gear weight.

A direct drive method has been proposed for the purpose of reducing the drive loss of energy caused by gears. The current driving system for commuter trains is the cardan system that transmits the torque of the motor attached to the carriage to the axle via a flexible joint and a reduction gear. Attempts to transmit the motor torque directly to the wheels, omitting this drive reduction gear, use a permanent magnet synchronous motor instead of the conventional induction motor as disclosed in Non-Patent Document 1. is doing. Further, Patent Document 1 discloses a direct drive type electric wheel structure in which a rotor is disposed on the outer peripheral side of a stator having a plurality of permanent magnets alternately in the circumferential direction.

As shown in Non-Patent Document 2, this direct drive system is applied to a wind turbine, the wind turbine propeller is a double reversal system, and the rotor and stator of the generator are driven by the front and rear propellers, respectively. In 1931 German H. Proposed by Honef and adopted in a super-large wind power generator, it was not successful. In Patent Document 2, in a wind power generator including at least two wings, a stator and a rotor are formed by mutually concentric tube sections, and permanent magnets and windings are respectively arranged on opposite surfaces of these. Is disclosed.

The concentric rotating shaft of the present invention is the same as the rotating shafts of a plurality of sets of propellers and impellers, and a plurality of concentric deep groove bearings, cylindrical roller bearings, or one-way clutch bearings whose rotational directions are opposite to each other are mounted, And it means that the wind turbine shafts of each other rotate concentrically around the rotation axis. According to the figure shown in Patent Document 3, five sets of Savonius type windmills are stacked on the same axis, and a generator is connected to one end of the windmill with the same rotation axis of the propellers and impellers. It effectively captures wind energy at different altitudes. In Patent Document 4, a low-speed crossflow type windmill is placed on the upper part and a high-speed Darrieus type windmill is placed on the lower part, the rotation center axis of one windmill is inserted into the hollow rotation axis of the other windmill, It is possible to generate electricity at a high rate even up to wind power. As an example in which two propellers are arranged coaxially, Patent Document 5 provides two front and rear propellers on the same axis, and the rear propeller is a wind generated by the rotation of the front windmill in addition to the wind coming from the front. It also receives and rotates, and those rotations are accelerated by the respective gears to drive the two generators. Similarly, in Patent Document 6, two front and rear propellers are provided on the same axis, and the front propeller and the rear propeller are rotated in opposite directions, but the speed is increased by gears attached to the respective rotation shafts. It drives the generator.

As an invention in which two propellers are arranged on the same axis, Patent Document 7 is most noticeable. The front stage propeller and the propeller having a smaller diameter than the front stage propeller are arranged in the rear stage, they are arranged coaxially, and one of the propellers is used as an electric rotor of the generator, and the other rotor is used as a field rotor of the generator. The structure is connected, and in the light wind, the rear propeller rotates in the opposite direction to the previous propeller, and after the rotational speed reaches its maximum as the wind speed increases, it gradually decelerates, and after stopping, The wing shape starts to rotate in the same direction, and the rear propeller rotates even if the front propeller does not rotate in a breeze. The front and rear propellers rotate in and out of the generator (electron, field, ) Are each driven. According to this patent document, a large propeller (rotor) windmill is suitable for high output, but does not operate in a leeward wind, and a small-diameter propeller windmill is suitable in a leeward wind. However, since the output under a strong wind is extremely small, the range of application is limited, and in order to avoid overloading the generator under a strong wind, a rotation suppression mechanism such as a brake or a variable pitch is required. It is described that the present invention solves these problems, operates efficiently from a very low wind condition to a strong wind condition, and provides a constant output without a brake mechanism even at a rated wind speed or higher.

To summarize the above-mentioned references, the disadvantage of wind power generation is that the wind turbine does not rotate when the wind speed is slow, and when the wind speed is fast, a brake is necessary to prevent overload on the generator. A device has been devised to improve the performance of the wind turbine by rotating the propeller and impeller wind turbine on the same axis.

Japanese Patent Laid-Open No. 10-86885 Japanese Patent Publication No. 2005-503098 JP 2002-130110 A JP 2006-132514 A JP 2003-269316 A JP 2002-295361 A Japanese Patent Laid-Open No. 2004-1000054 Toshiba Review Vol. 60 (8), 52 pages (2005) Wind energy basics, by Ushiyama Izumi, Ohm Co., Ltd., page 109, published on July 20, 2005

Energy obtained by wind power (W) is swept area (A), air density ([rho), is given by When the wind speed ^{(V) W = AρV 3/} 2. That is, if the airflow speed passing through the rotating surface of the windmill is increased, the output of the windmill is proportional to the cube of the airflow speed. However, the rotational speed of the windmill decreases as the diameter increases. On the other hand the use of the wind turbine as a flow of water, the density of water is 854 times the 1025kg / m ³ and 1.2 kg / m ³ of density of the air, the energy conversion efficiency is high. However, the water flow rate is extremely low compared to the wind flow rate, and even within the Kuroshio Current, it is 2 meters per second. For this reason, a gearbox using gears is indispensable. However, the energy lost by this gearbox is large, and the starting torque is also large. In addition, the weight and cost are increased. There are also many gear destruction accidents due to overload in strong winds. Therefore, it is an object of the present invention to omit the speed increaser and develop an extraction device that converts fluid energy such as wind or water current that has no failure for a long period of time into electrical energy.

The present invention has been made in view of the above-described problems. That is, the object of the present invention is that in the case of a horizontal rotating shaft wind turbine, the rotation of a pair of front and rear propellers rotating in reverse is directly connected to the rotating element and stator of the generator, and the vertical rotating shaft wind turbine is provided. Directly connected to the rotating element and stator of the rotating generator of a pair of upper and lower impellers rotating in reverse, and the relative rotation of them makes the wind turbine concentric rotating shaft direct drive type electric energy equivalent to twice the flow velocity It is to provide an extraction device.

According to Patent Document 7, a small windmill is advantageous under a slight wind speed, and a large windmill is intended for a large output, but conversely, a large windmill having a large propeller diameter is advantageous and the diameter is small under a slight wind speed. Basically, small windmills can provide output during strong winds. In addition, it is described that a windmill with a large diameter is on the leeward side and a windmill with a small diameter is on the leeward side, but this is also the opposite, by making the windmill with a small diameter on the leeward side and the windmill with a large diameter on the leeward side. The wind flow is effectively taken into the windmill on the windward side and the windmill on the leeward side to obtain power generation energy.

In order to achieve the above object, in the case of a pair of horizontal axis type propeller wind turbines having a horizontal rotation axis, the first propeller installed on the windward and the second propeller with the wind cut angle reversed. Install them on the leeward side adjacent to each other or with a generator separated from each other so that the two wind turbines do not interfere with each other, and the wind receiving area of the first wind turbine is equal to the wind receiving area of the second wind turbine. Therefore, it is desirable that the second propeller has a long diameter (2r ₁ √2) propeller supported by a support blade (2r ₁ ) having the same diameter as the _first propeller diameter (2r ₁ ). . Further, in order to prevent the propeller from reversing due to the back wind or the back wind, the one-way clutch bearing or ratchet having the opposite rotation direction is provided on the outer rotating shaft and the inner rotating shaft of the pair of horizontal rotating shafts. A generator rotor is provided on one of the coaxial rotating shafts, and a stator is provided on the other rotating shaft, and a power generation energy equivalent to about twice the flow velocity is obtained by relative rotation thereof.

In the case of a horizontal axis type propeller wind turbine, the confusion of the air flow by the tower becomes a problem. In order to avoid the effect of this irregular flow, in the case of an up window that receives wind from the upper front side of the tower, the pair of propellers are directed upward and the elevation angle (corning angle) is inclined to the negative side, and the lower rear side of the tower In the case of a down window that receives wind from the wind, tilt the elevation angle (corning angle) to the positive side with the pair of propellers facing downwind. The down window is desirable especially in the ocean and large windmills where there are no obstacles around.

On the other hand, since the vertical rotation axis wind turbine is not affected by the flow direction of wind or water, the rotation axis of the impeller may be set perpendicular to the flow. However, in the case of a windmill, the wind speed increases as the altitude from the ground surface increases, so a pair of coaxial windmills has a shorter diameter at the top of the second impeller than the first impeller. The first impeller is installed. However, when there is not much difference in wind speed between the top and bottom of the impeller, the diameters of the top and bottom impellers may be equal. The present invention has a structure in which a generator rotor is provided on one of the two sets of coaxial rotary shafts and a stator is provided on the other rotary shaft, and the relative rotational speed of the two rotors obtains power generation energy equivalent to twice the flow velocity. As long as both do not rotate in the same direction, power generation energy of 1 time or more can be obtained, so the diameter of the impeller need not be so much concerned. However, in order to prevent the impellers rotating in reverse from each other from deviating from normal rotation due to the backflow or turbulence of the wind, the rotation direction of each of the pair of vertical rotation shafts on the outer rotation shaft and the inner rotation shaft is respectively Is equipped with a reverse one-way clutch bearing or ratchet, then a generator rotor is provided on one of the two coaxial rotary shafts and a stator is provided on the other rotary shaft. Power generation energy equivalent to the flow rate is obtained.

A set of two vertical axis turbines that share the same vertical axis of rotation. A second turbine is installed under the first turbine, and the impellers that rotate in reverse from each other cause reverse flow and disturbance of water. In order to prevent deviating from normal rotation, two sets of one-way clutch bearings or ratchets with opposite rotation directions are provided on the outer and inner rotary shafts of a pair of vertical rotary shafts, respectively. A generator rotor is provided on one of the coaxial rotating shafts and a stator is provided on the other rotating shaft, and a power generation energy equivalent to a flow velocity of 1 to 2 times is obtained by relative rotation thereof.

In the power generation method combining wind power and hydropower, the first turbine of a pair of vertical axis wind turbines sharing a vertical rotation axis is installed below the water surface, and the second wind turbine is installed above the water surface, In order to prevent them from deviating from normal rotation due to backflow or turbulence of water, they are impellers rotating in reverse with each other. After one-way clutch bearings or ratchets with opposite rotation directions are provided on the inner rotary shaft, a generator rotor is provided on one of the two sets of coaxial rotary shafts, and a stator is provided on the other rotary shaft. Power generation energy equivalent to 1 to 2 times the flow velocity is obtained by rotation. In this case, even if one of the flows stops, power generation is performed if the other is rotating. Wind power and fluid power have different rotations, but no problem arises due to power generation by their relative rotation.

Therefore, in the case of a horizontal rotation axis wind turbine, the rotation of a pair of front and rear propellers rotating in reverse is directly connected to the rotating element and the stator of the generator, and in the vertical rotation axis wind turbine. Directly connected to the rotating element and the stator of the rotary generator of a pair of upper and lower impellers rotating in reverse directions, the electric energy equivalent to twice the flow rate can be extracted by their relative rotation. The power generation efficiency can be improved.

As described above, according to the present invention, in the case of a horizontal rotating shaft wind turbine, the rotation of a pair of front and rear propellers that are rotating reversely to each other is directly connected to the rotating element and the stator of the generator, and the vertical rotating shaft wind turbine In the car, it is directly connected to the rotating element and the stator of the rotary generator of a pair of upper and lower impellers rotating in reverse, and the electric energy equivalent to twice the flow rate can be extracted by their relative rotation. As a result, excellent effects such as improvement of power generation efficiency can be obtained.

Hereinafter, an effective embodiment of the present invention will be described in detail with reference to FIGS. In the drawings, the same parts are denoted by the same reference numerals.

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention. As shown in this figure, in the case of a set of two horizontal axis type propeller wind turbines having a horizontal rotation axis, the first propeller 1 installed on the windward 14 and the second one with the wind cut angle reversed. Propeller 2 is installed adjacent to or behind generator room 3, and a pair of wind turbines do not interfere with each other, and the wind receiving area (πr ₁ ² ) of _first propeller 1 and the second In order to make the wind receiving area (πr ₂ ² −πr ₁ ² ) of the propeller 2 equal, the second propeller has a support blade 5 (2r ₁ ) having the same diameter as the diameter of the _first propeller 1 (2r ₁ ). It is desirable to have a propeller 2 having a long diameter 6 (2r ₂ = 2r ₁ √2) supported by 2r ₁ ). Further, in order to prevent the reverse of the propeller due to the back wind or the back wind, the one-way clutch bearings 14, 15, 16, 17 whose rotation directions are opposite to the outer rotation shaft 7 and the inner rotation shaft 8 of the pair of horizontal rotation shafts, respectively. Alternatively, after the ratchets 14, 15, 16, 17 are provided, the generator rotor 9 is provided on one of the two sets of coaxial rotary shafts, and the stator 10 is provided on the other rotary shaft, and their relative rotations 11, 12 are provided. Thus, a power generation energy equivalent to about twice the flow rate is obtained.

FIG. 2 is a detailed view of the inside of the power generation chamber 3. A wind turbine having a horizontal rotating shaft or a vertical rotating shaft has a concentric rotating shaft, two sets of rotating directions 11 and 12 opposite to each other, and a rotating direction on the outer rotating shaft 7 and the inner rotating shaft 8 respectively. Comprises one-way clutch bearings 14, 15, 16, 17 or ratchets 14, 15, 16, 17, with one rotating shaft being the generator rotor 9 and the other rotating shaft being the stator 10, When the rotor 9 is a permanent magnet, a slip ring 18 and a brush 19 are provided on the outer rotating shaft 7 in order to take out an electromotive force generated in the coil of the rotating stator 10. Although not shown in FIG. 2, when the rotor 9 is an electromagnet, the inner rotary shaft 8 is also provided with a slip ring 18 and a brush 19. Here, the side rotary shaft 7 and the inner rotary shaft 8 are provided with one-way clutch bearings 14, 15, 16, 17 or ratchets 14, 15, 16, 17 whose rotational directions are opposite to each other. One end can be a ball bearing without a one-way clutch bearing or ratchet.

FIG. 3 is an adaptation diagram for an up window and a down window. In the case of a horizontal axis type propeller wind turbine, the confusion of the air flow by the tower 13 becomes a problem. In order to avoid the influence of this irregular flow, in the case of the up window (c) which receives the wind 14 from the upper front side of the tower 13, the pair of propellers 1 and 2 are directed upward and the elevation angle 20 (corning angle α) is set. In the case of the down window (d) that is inclined to the negative side and receives the wind from the lower rear side of the tower 13, the pair of propellers 1 and 2 are directed downward and the elevation angle 20 (corning angle α) is inclined to the positive side. In particular, the down window (d) is desirable in the ocean and large windmills where there are no obstacles around.

FIG. 4 is a diagram showing a case where two sets of propellers are installed apart from each other. This is a case where a short-diameter propeller 1 of a first wind turbine of a set of two horizontal axis wind turbines each having a horizontal rotation axis and a second propeller 2 having a reversed wind angle are installed across a power generation chamber 3. Compared to the case where two sets of horizontal axis wind turbines are placed in front of the power generation chamber 3 shown in FIG. 1, the weight balance for supporting the power generation chamber 3 by the tower 13 when the propellers are placed apart as shown in FIG. 4. This is advantageous in that it can be adjusted.

FIG. 5 is a diagram in which two sets of vertical rotating shaft wind turbines having different impeller diameters are arranged vertically. A vertical rotation axis wind turbine with a plurality of blades 23 (blades) arranged vertically is not affected by the flow direction of wind or water, and therefore the rotation shafts of the impellers 21 and 22 may be set perpendicular to the flow. However, in the case of a windmill, the wind speed 14 increases as the altitude from the ground surface increases, so in a pair of coaxial windmills, the first impeller 21 is placed on top of the second impeller 22. An impeller 22 having a longer diameter than the first impeller 21 is installed. The first impeller 21 installed on the upper side directly drives the generator rotor 9 installed in the power generation chamber 3 by the inner rotary shaft 8, and the second impeller 22 enters the power generation chamber 3 by the outer rotary shaft 7. The installed power generation stator 10 is directly driven, and power generation energy equivalent to about twice the flow velocity is obtained by the relative rotations 11 and 12 thereof. In order not to deviate from the set rotation direction of these coaxial rotation shafts, the one-way clutch bearings 14, 15, whose rotation directions are opposite to the outer rotation shaft 7 and the inner rotation shaft 8 of two sets of vertical rotation shafts, respectively, 16, 17 or ratchet 14, 15, 16, 17 are provided. As described above, the rotation of the impellers 21 and 2 does not have to be the same for the purpose of obtaining power generation energy equivalent to a flow velocity approximately twice as large as the relative rotations 11 and 12. In an extreme case, power is generated even if one of them is stopped. Therefore, as shown in FIG. 6, you may arrange | position the impeller 21 which has the same diameter up and down.

FIG. 7 shows a set of two vertical axis turbines sharing a vertical rotation axis. The generator room 3 is installed on the ship bottom 26 via the fixed base 25, the first turbine 27 is installed below the water surface 28, and the second turbine 27 is installed therebelow. In order to prevent the impellers from deviating from normal rotation due to the backflow or turbulence of water, the one-way in which the rotation direction is opposite to the outer rotation shaft 7 and the inner rotation shaft 8 of the pair of vertical rotation shafts, respectively. After the clutch bearings 14, 15, 16, 17 or the ratchets 14, 15, 16, 17 are provided, the generator rotor 9 is provided on one of the two coaxial rotary shafts, and the rotary stator 10 is provided on the other rotary shaft. In addition, by the relative rotation of a pair of water wheel shafts by the water flow 29, a power generation energy equivalent to a flow velocity of 1 to 2 times is obtained.

FIG. 8 shows a power generation method combining wind power and hydropower. The generator room 3 is installed between the deck 24 and the ship bottom 26 via the fixed base 25, and the upper part of the deck 24 has two sets of two vertical axis wind turbines sharing a vertical rotation axis. The first windmill impeller 21 and the first watermill impeller 27 are installed under the ship bottom 26 across the water surface 28, and these are the impellers 21 and 22 rotating in reverse directions 11 and 12, respectively. In order to prevent the rotation direction of the motor from deviating from the normal rotation due to the backflow or disturbance of water, the one-way clutch whose rotation direction is opposite to the outer rotation shaft 7 and the inner rotation shaft 8 of the pair of vertical rotation shafts, respectively. After the bearings 14, 15, 16, 17 or the ratchets 14, 15, 16, 17 are provided, the generated energy equivalent to the flow velocity of 1 to 2 times is obtained by their relative rotation. In this case, even if one of the winds 14 or the water flow 29 stops, power generation is performed if the other is turning. Wind power and fluid power have different rotations, but no problem arises due to power generation by their relative rotation.

As described above, according to the present invention, in the case of a horizontal rotating shaft wind turbine, the rotation of a pair of front and rear propellers rotating in reverse is directly connected to the rotating element and stator of the generator, and the vertical rotating shaft The wind turbine is directly connected to the rotating element and the stator of the rotating generator of a pair of upper and lower impellers rotating in opposite directions, and extraction efficiency is equivalent to twice the flow velocity due to their relative rotation. Improvement can also be achieved.

According to the present invention, in the case of a horizontal rotating shaft wind turbine, the rotation of a pair of front and rear propellers rotating in reverse is directly connected to the rotating element and the stator of the generator, and in the vertical rotating shaft wind turbine. Directly connected to the rotating element and stator of the rotary generator of a pair of upper and lower impellers rotating in reverse, extracting electrical energy equivalent to twice the flow velocity by their relative rotation, and using these energies, By producing seawater electrolysis of seawater on the marine resource collection site, hydrogen-producing metals such as caustic soda, sodium and magnesium, or fresh water, and landing these products at the port of call, during production, storage and transportation Energy loss can be eliminated and overall system efficiency can be improved. This has led to a global depletion of resources and high resources, and the rise of resource-providing countries that accompanies this has not only calmed the current situation that is expanding its influence on the international community, but also the inexhaustible clean marine resources. Producing economically without using fossil fuels is an important measure for Japanese industries surrounded by the sea.

Schematic configuration diagram of a double reversing propeller wind turbine Detailed cross-sectional view of the power generation chamber Adaptation of up window and down window Schematic configuration diagram of a double reversing wind turbine provided with a set of two propeller wind turbines separated by a power generation chamber Schematic configuration diagram of a pair of double reversing vertical axis wind turbines with different diameters of impellers Schematic configuration diagram of double reversing vertical axis wind turbines with a pair of two impellers having the same diameter Schematic configuration diagram of a pair of double reversing vertical axis water turbines with the same impeller diameter Schematic block diagram of a wind turbine generator with one wind turbine on the deck and the other on the bottom of a set of two wind turbines

Explanation of symbols

a Propeller type windmill top view
b Propeller type windmill cross section
c Up window
d Down window 1 Small diameter propeller 2 Large diameter propeller
3 Power generation chamber 4 Small propeller diameter 5 Support wing 6 Large diameter propeller diameter 7 Outer rotating shaft 8 Inner rotating shaft 9 Rotor
10 Rotating stator (stator)
11 Rotating direction 12 Reverse rotating direction 13 Tower 14 One-way clutch bearing, clutch 15 One-way clutch bearing, clutch (one of 14 and 15 can be a ball bearing)
16 One-way clutch bearing, clutch 17 One-way clutch bearing, clutch (One of 14, 15 can be ball bearing)
18 Slip ring 19 Brush 20 Elevation angle (corning angle)
21 Vertical axis windmill (impeller)
22 Large diameter vertical axis windmill (impeller)
23 Wings
24 Deck or platform 25 Floating ship 26 Bottom 27 Vertical shaft type water wheel (impeller)
28 water line (water surface)
29 Water flow

Claims (5)

A one-way clutch having a horizontal rotating shaft or a vertical rotating shaft, each having a concentric rotating shaft, two sets of rotating directions opposite to each other, and the rotating directions of the outer rotating shaft and the inner rotating shaft being reversed. A wind turbine equipped with a bearing or ratchet, wherein the propeller or impeller of the first wind turbine has a longer diameter, the same diameter or a smaller diameter than the second propeller or impeller, A wind turbine concentric rotating shaft direct drive type electric energy extracting device, wherein the rotating shaft of the impeller is a rotor of the generator and the other rotating shaft is a stator. A pair of horizontal axis wind turbines each having the horizontal rotation shaft according to claim 1, wherein the wind receiving area of each wind turbine has a diameter equal to or larger than the same area, and is installed on the windward side. The propeller of the second and the second propeller with the wind-off angle reversed are installed on the leeward side adjacent to or separated from each other, and the first propeller on the leeward side is shorter than the second and has the second propeller. Has a support wing of the same diameter or more as the first propeller, the propeller is on the extension line of the support wing, the two propellers rotate in opposite directions, and the propeller is installed in the lee of the tower 2. The wind turbine concentric rotating shaft direct drive type electric energy extraction device according to claim 1, wherein a propeller is installed on the windward side of the tower. 2. A pair of vertical axis wind turbines sharing a vertical rotation axis according to claim 1, wherein the first unit has a shorter diameter or the same diameter as the first impeller at the top of the second impeller. The wind turbine concentric rotating shaft direct drive type electric energy extracting device according to claim 1, wherein the impellers are installed in such a manner that they rotate in directions opposite to each other. A set of two vertical axis turbines sharing the vertical axis of rotation according to claim 1, wherein a second turbine is installed under the first turbine and they rotate in opposite directions. 2. A wind turbine concentric rotating shaft direct drive type electric energy extraction device according to claim 1, wherein A set of two vertical axis wind turbines sharing the vertical rotation axis according to claim 1, wherein the first turbine is installed below the water surface and the second wind turbine is installed above the water surface. The wind turbines concentric rotating shaft direct drive type electric energy extracting device according to claim 1, wherein the rotary shafts rotate in opposite directions.

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