JP6469303B1 - Wind power generation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To arrange a small vertical wind turbine type wind power generator in a windbreak weir shape in a space below a blade in a large propeller type wind power generator installed in a location with good wind conditions. The propeller-type wind turbine generator is efficiently operated with the rising airflow, and the vertical axis wind turbine-type wind turbine generator is also allowed to generate power.
SOLUTION: A propeller-type wind power generator 1 has a support 1A around a column 1A so that its upper end does not come into contact with a blade 1B of the propeller-type wind power generator 1, and around the column 1A of the propeller-type wind power generator 1. The small windmills 2 and 3 are disposed in a wind dam shape that makes it difficult for the wind to pass, and the rising airflow generated by hitting the small windmills 2 and 3 is applied to the blade 1B of the propeller-type wind power generator 1. Increased rotation efficiency.
[Selection] Figure 1

Description

  The present invention relates to a wind power generation system capable of performing efficient wind power generation by using land with good wind conditions more effectively.

  For example, Patent Document 1 discloses that wind turbines are assembled and arranged in order to efficiently use wind. In this structure, a plurality of multistage impellers are supported in parallel on a wide support frame.

JP 2005-207355 A

In the invention described in Patent Document 1, the support frame is divided into a plurality of sections on the left and right sides, and the vertical main shaft is supported for each section, and a vertical blade is vertically fixed to each vertical main shaft by a support arm. Even if wind blows from any direction, airflow hits each of the vertically long blades and rotates.
In the present invention, a plurality of small windmills are arranged in a wind dam shape around a prop of a large propeller-type wind power generation device having a height of several tens of meters to generate an updraft, and the airflow is propeller-type. Wind turbines can be used in wind power generators to increase rotational efficiency, and small wind turbines can also use vertical mains wind turbine wind turbines, etc., using the airflow passing between the props of propeller wind turbines. It aims to provide a wind power generation system that makes it effective.

  The present invention takes the following technical means in order to solve the above problems.

(1) Around the prop of the propeller type wind power generator installed upright, the upper end is around the prop of the propeller type wind power generator installed upright and the upper end contacts the blade of the propeller type wind power generator A small windmill in the form of a wind dam that makes it difficult for wind to pass around the prop of the propeller-type wind power generator so that the rising airflow generated by hitting the small windmill Hit the blade to increase the rotation efficiency,
The small wind turbine is a vertical axis wind turbine type wind power generator having a vertical blade, and the vertical wind turbine type wind power generator itself is also a wind generator by applying an air flow blocked by the rotation of the vertical blade to the blade of the propeller type wind power generator. A wind power generation system designed to be used .

  (2) The vertical axis wind turbine type wind power generator is configured to fix the tip part of the inwardly inclined portion protruding in the vertical main axis direction from the top and bottom of the main part of the vertically long blade to the vertical main axis. The described wind power generation system.

  (3) The small windmill disposed in the wind dam shape is a small propeller-type wind power generator, and applies the airflow blocked by the rotation of the propeller to the blades of the large propeller-type wind power generator. The wind power generation system according to (1), in which the wind turbine generator itself also generates wind power.

  (4) The blade of the propeller in the wind turbine of the small-sized propeller type wind power generator has a front bent portion that protrudes from the main portion in a side view, and the front end surface of the front bent portion is The wind power generation system according to (3), wherein the wind power generation system is orthogonal to the rotation axis, has a substantially fish-shaped front surface, and has a front edge and a rear edge on the same rotation arc.

(5) The small windmill is disposed around each of the props of the large propeller-type wind power generator at each intersection of a right tilt line and a left tilt line that intersects the front-rear direction at 45 degrees around the prop. In the row direction, the small wind turbines are alternately arranged with a high height and a low one, and in the front and rear row directions, the order is shifted one by one. The wind power generation system according to any one of the above.

  According to the present invention, the following effects can be obtained.

In the invention described in (1) above, the propeller-type wind power generation is performed so that the upper end does not contact the blades of the propeller-type wind power generation device around the support of the large-scale propeller-type wind power generation device standing on the site. If a plurality of small wind turbines are installed in the wind dam shape that makes it difficult for the wind to pass around the column of the device, the blocked air flow rises and hits the blades of the large propeller wind power generator. Apart from that, the airflow rising upon hitting the lower windmill also hits the propeller of the propeller-type wind power generator, so that the propeller-type wind power generator can be operated efficiently.
In addition, a large number of vertical wind turbine type wind power generators are arranged around the large propeller type wind power generator at a predetermined interval in a wind dam shape, so that when the wind blows, the propeller type wind power generator The blades of the device rotate to generate electricity.
Around the prop of the propeller type wind turbine generator, a vertical wind turbine type wind turbine generator is arranged as a plurality of wind turbines. It moves upwards and hits the blade of the propeller type wind power generator and rotates it efficiently.
Also, a plurality of vertical axis wind turbine type wind power generators are arranged in a place with good wind conditions, and wind power can be effectively used to efficiently generate wind power.

  In the invention described in (2) above, the vertical axis wind turbine in the vertical axis wind turbine type wind turbine generator is configured such that the tip end portion of the inwardly inclined portion projecting in the vertical main axis direction from the top and bottom of the main portion of the vertical blade is vertically Since it is fixed to the main shaft, it has excellent rigidity. In addition, the wind power can be effectively used because the power is efficiently rotated even when the propeller type wind power generator is excellent in rotation and the propeller of the propeller type wind power generator does not rotate.

  In the invention described in (3) above, the small propeller-type wind power generators are arranged at regular intervals in the front, rear, left, and right around the props of the large propeller-type wind power generator, so the wind direction is reversed. Even when the wind turbines become wind-restraining dams, they can efficiently apply the updraft to the large propeller wind turbines, and the position of the wind turbines of multiple small propeller wind turbines However, it can rotate and generate electricity regardless of the wind direction.

In the invention described in (4), the blade of the propeller in the wind turbine of the small propeller-type wind power generator is formed with a forward bent portion projecting greatly from the main portion in a side view, Since the front end surface of the bent portion is orthogonal to the axis of rotation, the inner end portion of the front end surface has the maximum thickness, and when the blade rotates, the portion that is the rotating centrifugal portion The resulting Coanda effect is maximized, increasing the rotational efficiency.
The front face of the front end face is perpendicular to the axis of rotation, and is bent forward with respect to the main part and protrudes forward, and the airflow hitting the front face of the blade is caused by centrifugal force generated during rotation. It is blocked by hitting the forward bent portion, and the pressure is increased to push the forward bent portion strongly in the rotational direction to pass through to increase the rotation efficiency. The airflow that has passed through rises and hits the blades of a large propeller-type power generator, and rotates the windmill efficiently.

  In the invention described in (5), the small windmills are arranged at regular intervals in the front, rear, left, and right around the support of the large propeller type wind power generator, so that the wind direction is reversed. The windmill rotates and can act as a wind dam.

It is a partial array front view of the power generation device in the wind power generation system of the present invention. It is an arrangement schematic plan view of a power generator in a wind power generation system of the present invention. It is a front view of the vertical-axis windmill type wind power generator of the wind power generation system of this invention. It is a front view which shows the propeller of the windmill of a small propeller type wind power generator. It is the VV sectional view taken on the line in FIG.

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a part of an arrangement state of a propeller type wind power generator 1 used in the wind power generation system of the present invention and a plurality of small wind turbines arranged as wind dams around the propeller type wind power generator 1. FIG. 2 is a plan view showing the arrangement state, and small vertical wind turbine type wind turbine generators 2 and 3 are used as small wind turbines.

  In FIG. 1, two general high-sized propeller-type wind power generators 1 and 1 are arranged at a predetermined interval. This arrangement interval is an interval at which airflow interference does not occur between neighboring blades 1B when rotating, and airflow generally passes between the columns 1A.

  The present invention intends to effectively use this passing air flow, and as shown in FIG. 1, a high dimension is provided at an appropriate interval on the side of the support 1A of the large propeller type wind power generator 1. A plurality of vertical wind turbine type wind power generators 2 and a slightly smaller vertical wind turbine type wind power generator 3 are arranged alternately.

  As a result, as compared with the case where the power generators of the same height are arranged, the airflow strikes the vertical wind turbine type wind power generators 2 and 3 in the leeward evenly regardless of the direction of the wind. It becomes easy.

  The distance between the vertical wind turbine type wind turbine generators 2 and 3 is about three times or more the rotational diameter of the vertical blade 4, but when the vertical blade 4 rotates about the vertical main shaft 7, the vertical blade 4 rotates. The air in the trajectory is guided to the outside by centrifugal force, the inside of the vertical blade 4 becomes negative pressure, and the airflow entering from the outside rises along the inner surface of the vertical blade 4 and merges with the natural wind. The blade 1B of the propeller-type wind power generator 1 is rotated with high efficiency.

The chord length of the main portion 4A of the longitudinal blade 4 is 45% to 55% of the rotation radius of the main portion 4A, and the maximum thickness is 20% to 35% of the maximum chord length. Thickness and chord length that cannot be done.
Since this thickness is thick, the Coanda effect in the main portion 4A generated during rotation is increased, and the rotation speed is increased. Moreover, since the chord length is long, the wind receiving area in the rotary centrifugal section is increased, and the rotation speed is increased.

  FIG. 2 shows a plan view of the wind power generation system of the first time. The vertical axis wind turbine type with a high height is provided with appropriate intervals on the front, rear, left and right of the two propeller-type wind power generators 1 and 1 respectively. A plurality of wind turbine generators 2 and low vertical wind turbine type wind turbine generators 3 are arranged alternately.

As shown in FIG. 3, an enlarged front view of the vertical axis wind turbine type wind turbine generators 2 and 3 includes a generator 6 fixed to the middle portion of the column 5 and rotatably fitted on the tube column 5A on the upper side. The lower part of the mounted vertical main shaft 7 is inserted into the tube pillar 5A, and the lower end thereof is linked to the generator 6. The generator 6 generates power by the rotation of the vertically long blade 4.
The vertical main shaft 7 is fixed at the tips of the upper and lower inwardly inclined portions 4B, 4B of the main portion 4A of the vertically long blade 4 from three directions via fixing pieces 7A.

  When the wind blows, the blade 1B of the large propeller-type wind power generator 1 rotates, and at the same time, the vertical blades 4 of the small vertical wind turbine-type wind power generators 2, 3 rotate, and the generator 6 generates power.

  In this case, when the vertical blade 4 of the vertical wind turbine type wind power generators 2 and 3 rotates, the airflow inside the rotating arc of the vertical blade 4 is guided to the outside due to the centrifugal force and the pressure difference. While the air pressure is reduced and the airflow entering from the outside is further guided to the outside, the lower blade of the upper inwardly inclined portion 4B is pushed in the rotation direction, so that the vertically long blade 4 further rotates in addition to the rotation by the wind speed.

  Therefore, the airflow hitting from the front cannot pass through the rotating vertical blades 4 of the vertical wind turbine type wind power generators 2 and 3 but is blocked and moves upward, and the vertical blades 4 rotate. It merges with the air flow rising from the inside of the arc, effectively hits the blade 1B of the large propeller-type wind power generator 1, and efficiently rotates it.

  That is, conventionally, the airflow that has passed through the lower region of the blade 1B of the large propeller-type wind power generator 1 is blocked by the vertical blades 4 of the vertical-axis windmill-type wind power generators 2, 3 and rises. The airflow merges with the airflow hitting the blade 1B of the wind power generator 1, and the airflow can be used effectively.

  If a wind turbine weir is constructed with a structure instead of the vertical wind turbine type wind power generators 2 and 3, there is a cost that is not otherwise used, but a plurality of vertical wind turbine type wind power generators 2 and 3 are arranged. By installing it, wind can be kept like a dam and supplied to the large propeller-type wind power generator 1, and in addition, wind in a favorable wind condition can be supplied to a small vertical wind turbine-type wind power generator 2, It can be used effectively in 3 to generate extra power.

In the vertical axis wind turbine type wind turbine generators 2 and 3, the dimension of the longitudinal blade 4 that is either higher or lower can be made different.
The number of the vertically long blades 4 is three in the figure, but can be two or four or more.

  The vertical blade 4 rotates in any direction from the direction indicated by the arrow A, the direction indicated by the arrow B, the direction indicated by the arrow C, and the direction indicated by the arrow D in FIG. However, it rotates in the same way and the effect remains the same.

FIG. 4 is a front view showing the propeller 8 of the wind turbine in the small propeller type wind power generator.
In a small propeller type wind power generator, a nacelle (not shown) is disposed on a support (not shown) so as to be horizontally rotatable, and a propeller 8 of a windmill is provided at the rear of a rotating shaft projecting rearward from a generator (not shown) inside. It is fixed.

  In the propeller 8, the base portion 10 </ b> A of the blade 10 is fixed to the peripheral surface of the hub 9 at equal intervals. When viewed from the front, the leading edge 13 of the blade 10 is substantially straight up to the middle in the blade tip direction, and is arcuate in the direction of the trailing edge 14 from the tip portion of the main portion 11 to the tip of the forward bending portion 12. Are bent with almost the same string length.

  The rear bent portion 14 of the blade 10 has a chord length with substantially the same width as the front bent portion 12 when viewed from the front, and has the same cross section as the inclined shape of the front end face 16, and the main portion 11 is the base portion 10A. Nearby, the rear edge portion enters deeply into the front edge direction to form a bay portion 15, and the rear edge of that portion is almost as thick as the front edge portion, so that airflow can easily pass therethrough.

  5 is a cross-sectional view taken along line VV in FIG. The rear surface 18 of the main portion 11 is substantially vertical from the base portion 10A to the forward curved portion 12, and the front surface 17 is inclined in the direction of the rear surface 18 from the base portion 10A to the forward curved portion 12, and is forwardly directed. It is formed so that the thickness gradually decreases toward the bent portion 12.

  The forward bent portion 12 is largely bent forward from the end portion of the main portion 12, and the forward tip surface 16 protrudes by the thickness of the base portion 10 </ b> A. As shown in FIG. 4, the front edge end 13 </ b> A and the rear edge end 14 </ b> A are set on the same rotation arc T. Further, as shown in FIG. 5, the forward leading end face 16 is inclined slightly toward the rear face 18 at the rear edge rather than the front edge.

  The radius of curvature of the rear surface 12A of the forward bent portion 12 is larger than the radius of curvature of the front surface 12B, and is the thickness of the thickest portion line 12C portion parallel to the axial center line S passing through the inner end 16A of the forward tip surface 16. However, this blade 10 has the maximum thickness. The thicker the leading edge portion of the blade 10, the higher the Coanda effect and the higher the rotation efficiency.

In FIG. 5, when the airflow hits in the direction indicated by the arrow X, the front surface 17 of the blade 10 is inclined from the front edge 13 toward the rear edge, so that the blade 10 is pushed in the direction of the front edge 13 and rotates.
Further, since the front surface 17 of the main portion 11 is inclined from the base portion 10A toward the distal end, the airflow that slides on the inclined surface moves to the front surface 12B of the forward bending portion 12, and merges with the airflow that hits the front surface 12B. The blade 10 is strongly rotated in the rotation direction.

  When the blade 10 rotates, the Coanda effect generated on the surface of the blade 10 is maximum at the portion of the thickest portion line 12C parallel to the axial center line S passing through the inner end 16A of the forward tip surface 16 near the blade tip. However, since this is a rotary centrifugal portion, the rotational speed thereof is high, and the airflow that strikes the front surface 17 of the blade 10 due to the centrifugal force generated by the rotation is generated on the front surface 12B of the forward bending portion 12. The blade 10 is pushed out in the rotation direction, and the rotation efficiency is further increased to generate power efficiently.

  The airflow that has escaped by rotating the blade 10 rises, merges with the normal airflow, hits the blade 1B of the large propeller type power generator 1, and efficiently rotates it.

  In a place with good wind conditions, the rotation efficiency of the large-scale wind power generator can be increased, and wind power that has not been used in the ground can be used in the small wind power generator to efficiently generate wind power.

1. Propeller type wind power generator
1A. Post 1B. Blades 2, 3. 3. Vertical axis wind turbine type wind power generator Vertical blade 4A. Main part 4B. 4. Inwardly inclined part Support 5A. Tube column 6. Generator 7. Longitudinal spindle 7A. Fixed piece 8. 8. Small propeller wind power generator windmill propeller Hub 10. Blade 10A. Base 11. Main part 12. Forward bending section 12A. Rear surface 12B. Front surface 12C. Thickest part line 13. Leading edge 13A. Leading edge 14. Trailing edge 14A. Trailing edge 15. Bay entrance 16. Forward-facing tip surface 17. Front 18. Rear A, B, C, D. Wind direction Axis T. Rotating arc X. air flow

Claims (5)

Wind field around the prop of the propeller type wind power generator so that the upper end does not come into contact with the blades of the propeller type wind power generator, and around the prop of the propeller type wind power generator. A small windmill is arranged in a dam shape, and the rising airflow generated by hitting the small windmill is applied to the blades of the propeller-type wind power generator so as to increase the rotation efficiency.
The small wind turbine is a vertical axis wind turbine type wind power generator having a vertical blade, and the vertical wind turbine type wind power generator itself is also a wind generator by applying an air flow blocked by the rotation of the vertical blade to the blade of the propeller type wind power generator. A wind power generation system characterized by that. The vertical axis wind turbine type wind turbine generator, according to claim 1, characterized in that the tip of the inward song slanted portion protruding from the top and bottom of the main portion of the elongated blade to the longitudinal main axis direction, is to fix the respective vertical main axis Wind power generation system as described in. The small windmill arranged in the wind dam shape is a small propeller-type wind power generator, and applies the airflow blocked by the rotation of the propeller to the blades of the large propeller-type wind power generator so that the small propeller-type wind power generator The wind power generation system according to claim 1 , wherein the apparatus itself also generates wind power. The blade of the propeller in the wind turbine of the small-sized propeller type wind power generator has a front bent portion that protrudes from the main portion in a side view, and the front tip surface of the front bent portion is the rotational axis. The wind power generation system according to claim 3 , wherein the wind power generation system is orthogonal to the line and has a substantially fish-shaped front surface, and the front edge and the rear edge are on the same rotating arc. The small windmill is arranged around each of the right tilt line and the left tilt line that intersect the front and rear direction at 45 degrees around the support column of the large propeller type wind power generator , 5. The wind turbine according to claim 1, wherein high and low wind turbines are alternately arranged in a row direction, and the order is shifted one by one in the front and rear row directions. The wind power generation system described in Crab .

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