TW202014598A - Wind power generation system - Google Patents

Abstract

An object of the present invention is, in a large propeller-type wind power generation device installed in a location of good wind conditions, to arrange small vertical windmill-type wind power generation devices in a wind-stopping dam formation in a space below blades, efficiently operate the propeller-type wind power generation device with a rising air current, and cause power to be generated in the vertical windmill-type wind power generation devices as well. In the peripheries of support columns of upright propeller-type wind power generation devices, small windmills are arranged so that upper ends thereof do not come into contact with blades of the propeller-type wind power generation devices, the windmills being arranged in a wind-stopping dam formation whereby wind does not readily pass through the peripheries of the support columns of the propeller-type wind power generation devices, and rising air currents produced by contact with the small windmills are caused to make contact with the blades of the propeller-type wind power generation devices to increase rotation efficiency.

Description

Wind power generation system

The present invention relates to a wind power generation system that can more effectively use a location with good wind conditions and can perform efficient wind power generation.

In order to efficiently use the wind, windmills are arranged centrally, as described in Patent Document 1, for example. The aforementioned Patent Document 1 describes that a plurality of multi-stage impellers are supported side by side on a wide support frame. [Prior Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent Laid-Open No. 2005-207355

[Summary of the Invention] [Problem to be solved by invention] In the invention described in Patent Document 1, the support frame is divided into a plurality of regions from front to back, left and right, each region supports a vertical main shaft, and the vertical blade is vertically fixed by a support arm on each vertical main shaft. The wind blows from any direction, and each longitudinal blade will be touched and rotated by the airflow. An object of the present invention is to provide a wind power generation system that efficiently generates electricity. A plurality of small windmills are arranged around the pillars of a large propeller-type wind power generation device with a height of several tens meters in a wind-dam-like manner to produce Ascending airflow, this airflow is used in the propeller-type wind power generator to increase the rotation efficiency, and the airflow passing between the props of the propeller-type wind power generator is used, and the small-scale windmills also use longitudinal-axis wind-type wind power generators and the like. [Means to solve the problem]

In order to solve the aforementioned problems, the present invention adopts the following technical means.

(1) A wind power generation system in which small windmills are arranged in such a way that the upper ends of the propeller-type wind power generators are not in contact with the blades of the propeller-type wind power generator, and are in the form of wind-dams The wind dam shape makes it difficult for the wind to pass around the props of the propeller-type wind power generator, so that the updraft generated by contact with the small windmill touches the blades of the propeller-type wind power generator, and To improve the rotation efficiency, the aforementioned small windmill is a vertical-axis wind turbine generator including longitudinal blades, which is configured such that the airflow blocked by the rotation of the longitudinal blades touches the blades of the propeller-type wind turbine generator, and The vertical axis wind turbine generator also performs wind power generation.

(2) The wind power generation system as described in (1) above, wherein the longitudinal-axis wind-type wind power generation device fixes the front end portions of the inward inclination portions to the longitudinal main shafts respectively, and the inward inclination portions are the main components of the longitudinally long blades The upper and lower parts protrude in the direction of the longitudinal main axis.

(3) The wind power generation system as described in (1) above, wherein the small windmill arranged in the shape of a wind retention dam is a small propeller-type wind power generation device, which is structured such that the airflow blocked by the rotation of the propeller is hit The blades of a large propeller-type wind power generator are touched, and the small propeller-type wind power generator itself also performs wind power generation.

(4) The wind power generation system as described in (3) above, wherein the blades of the propeller in the windmill of the small-sized propeller-type wind power generation device are viewed from the side, and protrude greatly at the front end of the main part to form a forward curved portion. The front end face of the curved portion is orthogonal to the rotation axis, and its front face is approximately fish-shaped, and its front edge end and rear edge end are located on the same rotating arc.

(5) The wind power generation system according to any one of (1) to (4) above, wherein the small windmill is arranged around the pillar of the large-scale propeller-type wind power generator around the pillar, and At each intersection of the right-inclined line and the left-inclined line that cross at 45 degrees, the small windmill is alternately set with higher and lower windmills in the course direction, and is staggered one by one in the order of the front and back courses . [Effect of invention]

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

In the invention described in the above (1), if a large propeller-type wind power generator is erected around the site, a plurality of props are arranged so that the upper end does not contact the blades of the large propeller-type wind power generator. A small windmill, and the aforementioned small windmill is arranged to make it difficult for the wind to pass through the wind-dam-like shape around the prop of the propeller-type wind power generator, then the blocked air flow will rise and interact with the blades of the large propeller-type wind power generator In addition to the wind flow, the rising air current that touches the windmill below also touches the propeller of the propeller-type wind power generator, so that the propeller-type wind power generator can operate efficiently. In addition, since a plurality of longitudinal-axis wind-type wind power generators are arranged in a wind-dam-like manner at predetermined intervals around a large-sized propeller-type wind power generator, when the wind blows, the blades of the propeller-type wind power generator Will rotate and generate electricity. As the propeller-type wind power generation device is equipped with a vertical axis wind type wind power generation device as a plurality of windmills around the pillar of the propeller-type wind power generation device, it achieves the function of retaining the wind dam, and the airflow that touches it becomes an upward airflow and moves upward , And contact with the blades of the propeller-type wind power generator to make it rotate efficiently. In addition, the vertical-axis wind-type wind power generator itself is plurally disposed in a place with good wind conditions, can effectively use wind power, and performs wind power generation with good efficiency.

In the invention described in the above (2), the vertical-axis windmill in the vertical-axis wind-type wind turbine generator is the front end portion of the inwardly-curved portion that protrudes from the vertical direction of the main portion of the vertical blade toward the vertical main axis direction, Each is fixed to the vertical main shaft, so it has excellent rigidity. In addition, because of its good rotatability, even when the propeller of the propeller-type wind power generator does not rotate at a low wind speed, it can still efficiently rotate and generate electricity, so that the wind can be effectively used.

In the invention described in (3) above, the small propeller-type wind power generator is arranged around the pillars of the large propeller-type wind power generator at equal intervals in the front, back, left, and right directions, so even if the wind direction is reversed At the same time, it can still achieve the function of retaining the wind dam, so that the updraft can efficiently touch the large propeller-type wind power generator, and the windmills of multiple small propeller-type wind power generators can be irrespective of their position. The wind turns and generates electricity.

In the invention described in the above (4), the blades of the propeller in the windmill of the small-sized propeller-type wind power generator are a side view, and a forward curved portion is formed to protrude greatly at the front end of the main portion, and the forward curved portion The front end face of the part is orthogonal to the axis of rotation, so the inner end part of the front end face has the greatest thickness. When the blade rotates, the wide de effect generated in this part as the rotating centrifugal part will Reach the maximum and improve the rotation efficiency. The surface of the front end face is perpendicular to the axis of rotation, and it is greatly curved relative to the main part and protrudes forward. The airflow that collides with the front surface of the blade is curved forwardly due to the centrifugal force generated during rotation The parts are touched and blocked, so that the pressure is increased and the forward curved parts are strongly pushed and passed in the direction of rotation, thereby improving the rotation efficiency. The airflow that has passed will rise and touch the blades of the large propeller-type power generation device, so that the windmill rotates efficiently.

In the invention described in (5) above, the small windmill is arranged around the pillars of the large propeller-type wind power generator at equal intervals in the front, back, left, and right directions, so even if the wind direction becomes the reverse direction, the windmill can still rotate, and Reach the function of Liufeng Dam.

The embodiment of the present invention will be described with reference to the drawings. 1 is a front view showing a part of the arrangement of a propeller-type wind power generator 1 used in the wind power generation system of the present invention and a plurality of small windmills arranged as wind dams around it, FIG. 2 It is a plan view showing its arrangement state, and uses small vertical axis wind turbine generators 2 and 3 as small windmills.

In Fig. 1, there are two general high-size propeller-type wind power generators 1, 1 and are arranged at predetermined intervals. This arrangement interval is an interval at which the airflow does not interfere with the adjacent one when each blade 1B rotates, and the general airflow is directly circulated between the pillars 1A.

The present invention is an invention for effectively utilizing the direct airflow. As shown in FIG. 1, a proper interval is provided on the side of the pillar 1A of the large-scale propeller-type wind power generator 1, and a plurality of heights are alternately arranged The vertical axis wind type wind power generator 2 of the size and the slightly lower vertical axis wind type wind power generator 3 of the type.

As a result, compared to the case where the power generators of the same height are arranged, regardless of the wind blowing from any direction, the vertical axis wind-type wind power generators 2 and 3 at the downwind position can easily touch the airflow equally.

The distance between the longitudinal axis wind turbines 2 and 3 is more than three times the rotation diameter of the longitudinal blade 4. When the longitudinal blade 4 rotates around the longitudinal main axis 7, the rotation path of the longitudinal blade 4 The air will be directed to the outside due to centrifugal force, so that the inside of the long blade 4 becomes negative pressure, and the airflow from the outside rises along the inner side of the long blade 4 and merges with the natural wind, touching the propeller-type wind power generation The blade 1B of the device 1 makes it rotate efficiently.

The chord length of the main part 4A of the longitudinal blade 4 is 45% to 55% of the turning radius of the main part 4A, and the maximum thickness thereof is 20% to 35% of the maximum chord length. Invisible thickness and chord length. Because of its thick thickness, the widening effect in the main portion 4A generated during rotation will increase, and the rotation speed will increase. In addition, since the chord length is very long, there is an effect that the wind-receiving area in the rotating centrifugal portion becomes larger and the rotating speed becomes larger.

FIG. 2 shows a plan view of the wind power generation system of the present invention, with a plurality of vertical windmills of relatively high heights alternately arranged at appropriate intervals at the front, back, left, and right sides of each of the left and right propeller-type wind power generators 1, 1 Type wind power generator 2 and a vertical axis wind power generator 3 with a relatively low height.

As shown in FIG. 3, an enlarged front view of the vertical-axis wind turbine generators 2 and 3 fixes the generator 6 to the middle of the pillar 5, and the vertical main shaft 7 is rotatably embedded above the upper pipe column 5A The lower part of the longitudinal main shaft 7 is inserted into the pipe string 5A, and its lower end is connected to the generator 6. By the rotation of the longitudinal blade 4, the generator 6 generates electricity. In the vertical main shaft 7, the front ends of the vertical inwardly-curved portions 4B and 4B of the nearly vertical main portion 4A of the vertically long blade 4 are fixed in three directions through the fixing pieces 7A.

When the wind blows, the blades 1B of the large propeller-type wind power generator 1 will rotate, and at the same time, the longitudinal blades 4 of the small longitudinal-axis wind power generators 2 and 3 will rotate, and the generator 6 will generate electricity.

In this case, when the longitudinal blades 4 of the longitudinal axis wind turbines 2 and 3 rotate, the air flow inside the circular arc of the longitudinal blades 4 will be directed to the outside due to the centrifugal force and the pressure difference, so the internal The air pressure will drop, and the airflow flowing from the outside will be more directed to the outside. In this case, the airflow will push the upper part inward to the lower surface of the curved portion 4B in the direction of rotation, so that the vertically long blades 4 will be turned beyond the rotation caused by the wind speed. Turn more.

Therefore, the airflow that touches from the front cannot pass through the rotating longitudinal blades 4 of the vertical-axis wind turbine generators 2 and 3 and is blocked, and then moves upward, and is in a circle with the rotation of the longitudinal blades 4. The airflows rising inside the arc merge and effectively touch the blades 1B of the large-scale propeller-type wind power generator 1 to make it rotate efficiently.

That is, it is known that the airflow passing through the area below the blade 1B of the large-scale propeller-type wind power generator 1 is blocked by the longitudinal blades 4 of the longitudinal-axis wind-type wind power generators 2 and 3 and rises, and is in contact with the propeller-type wind power generator. The airflow touched by the blade 1B of 1 merges, and the airflow can be effectively used.

If building wind-retaining weir-like structures to replace longitudinal-axis wind turbines 2 and 3, it will cost no other purpose, but by installing multiple longitudinal-axis wind turbines 2, 3. In addition to allowing the wind to stay in the form of a dam and supplying it to the large-scale propeller-type wind power generator 1, it can also effectively use the wind in places with good wind conditions using small vertical-axis wind power generators 2, 3 , And there is excess power generation.

In addition, in the vertical-axis wind-type wind power generators 2 and 3, either the height of the height or the length of the lower blade 4 can be made of different sizes. In addition, although the number of the vertically long blades 4 is shown in the figure, it may be 2 or 4 or more.

The wind from any direction of arrow A, arrow B, arrow C, and arrow D in FIG. 2 can rotate regardless of the change of wind direction, so even if the wind direction changes, it will be the same The rotation will not change its effect.

4 is a front view showing the propeller 8 of the windmill in the small-sized propeller-type wind power generator. The small-sized propeller-type wind power generator is provided with a nacelle capable of horizontal rotation on the pillar, and the propeller 8 of the windmill is fixed to the rear of the rotating shaft protruding from the generator inside to the rear. The aforementioned pillars, engine room, and generator are not shown in the figure.

The propeller 8 fixes the base 10A of the blade 10 to the circumferential surface of the hub 9 at an equal interval. In front view, the leading edge 13 of the blade 10 is configured to be almost linear until the middle of the blade end direction; from the front portion of the main portion 11 to the front end of the forward curved portion 12, with almost the same chord length The direction of the trailing edge 14 is curved in an arc shape.

The trailing edge 14 portion of the blade 10 is: the forward curved portion 12 in front view is made to have almost the same chord length, and the cross section is the same shape as the forward front end surface 16; the trailing edge portion of the main portion 11 is near the base portion 10A The bent portion 15 is formed by bending deeply in the direction of the leading edge, and the trailing edge of this portion is formed to have almost the same thickness as the leading edge portion, and the airflow easily passes through.

Fig. 5 is a cross-sectional view taken along line V-V of Fig. 4. The rear surface 18 of the main portion 11 is formed to be almost vertical from the base portion 10A to the forward curved portion 12, and the front surface 17 is formed to be inclined from the base portion 10A to the forward curved portion 12 toward the rear surface 18 and have a thickness The curved portion 12 gradually thins toward the front.

The forward curved portion 12 is largely flexed forward from the end of the main portion 12 to protrude the forward front end surface 16 by about the thickness of the base portion 10A. The forward front end surface 16 is formed to be in line with the rotation axis S The intersection, as shown in FIG. 4, is approximately fish-shaped, and the leading edge end 13A and the trailing edge end 14A are set on the same arc T. As shown in FIG. 5, the rear edge of the front end surface 16 is slightly inclined toward the rear surface 18 compared to the front edge.

The radius of curvature of the rear surface 12A of the forward curved portion 12 is larger than the radius of curvature of the front surface 12B, and the thickness of the thickest portion line 12C is the largest thickness in the blade 10, wherein the thickest portion line 12C passes through the forward front end The inner end 16A of the surface 16 is parallel to the axis S. The thicker the leading edge portion of the blade 10, the higher the width effect and the higher the rotation efficiency.

In FIG. 5, when the airflow touches from the direction of the X arrow, because the leading edge 13 of the front surface 17 of the blade 10 is inclined toward the trailing edge, the blade 10 is pushed toward the leading edge 13 and rotates. In addition, since the front surface 17 of the main portion 11 is inclined from the base portion 10A toward the front end direction, the airflow sliding over this inclined surface moves forward to the front surface 12B of the curved portion 12 and touches the front surface 12B The airflows merge and are surrounded, causing the blade 10 to rotate strongly in the direction of rotation.

When the blade 10 rotates, the widest effect on the surface of the blade 10 will reach the maximum at the portion of the thickest line 12C. The thickest portion 12C passes through the aforementioned inner end 16A of the forward front end surface 16 near the wing end The center line S is parallel, but because it is a rotating centrifugal part, its rotational speed is large, and the centrifugal force generated with the rotation will cause the airflow that touches the front surface 17 of the blade 10 to move forward to the curved portion 12 The front surface 12B pushes the blade 10 in the direction of rotation, thereby further improving the rotation efficiency and performing efficient power generation.

The airflow that leaves after the blade 10 rotates will rise and merge with the airflow that normally touches, and then touch the blade 1B of the large-sized propeller-type power generation device 1, and make it rotate efficiently. [Industrial use possibility]

The rotation efficiency of a large-scale wind power generator can be improved in a place with good wind conditions, and the unused wind power can be used as a small-scale wind power generator to perform efficient wind power generation.

1: Propeller wind power generator 1A: Pillar 1B: Blade 2.3: Longitudinal axis wind turbine generator 4: Long blades 4A: Main part 4B: Inward curve 5: Pillar 5A: Column 6: Generator 7: Longitudinal spindle 7A: fixed piece 8: propeller of windmill of small propeller type wind power generator 9: Wheel 10: Blade 10A: base 11: Main part 12: Forward curved part 12A: Rear surface 12B: front surface 12C: The thickest part line 13: leading edge 13A: leading edge 14: trailing edge 14A: trailing edge 15: Bent in 16: front to front face 17: front surface 18: rear surface A, B, C, D: wind direction S: axis line T: rotating arc X: Airflow

FIG. 1 is a front view of a part of the arrangement of power generation devices in the wind power generation system of the present invention. 2 is a schematic plan view of the arrangement of power generating devices in the wind power generation system of the present invention. Fig. 3 is a front view of a vertical axis wind turbine generator of the wind turbine generator system of the present invention. 4 is a front view of a propeller of a windmill of a small-sized propeller-type wind power generator. Fig. 5 is a cross-sectional view taken along line V-V in Fig. 4.

1: Propeller wind power generator

1A: Pillar

1B: Blade

2.3: Longitudinal axis wind turbine generator

4: Long blades

4A: Main part

5: Pillar

5A: Column

6: Generator

7: Longitudinal spindle

7A: fixed piece

Claims (5)

A wind power generation system characterized by: Small propellers are arranged around the pillars of the propeller-type wind power generators installed so that the upper end does not contact the blades of the propeller-type wind power generator, and are arranged in a wind-dam-like manner. The dam shape makes it difficult for the wind to pass around the props of the propeller-type wind power generator, so that the updraft generated by the collision with the small windmill touches the blades of the propeller-type wind power generator to improve the rotation efficiency, The above-mentioned small windmill is a longitudinal-axis wind turbine generator including longitudinal blades, and is configured such that the airflow blocked by the rotation of the longitudinal blades touches the blades of the propeller-type wind turbine generator, and the longitudinal-axis wind turbine The wind power generator itself also performs wind power generation. The wind power generation system according to claim 1, wherein the longitudinal-axis wind turbine generator is to fix the front end portion of the inwardly-curved portion to the longitudinal main shaft, and the inwardly-curved portion is vertically from the vertical direction of the main portion of the vertically long blade The part protruding in the direction of the main axis. The wind power generation system according to claim 1, wherein the aforementioned small windmill arranged in a wind-dam-like manner is a small propeller-type wind power generation device, which is configured such that the air flow blocked by the rotation of the propeller touches The blades of a large propeller-type wind power generator, and the small propeller-type wind power generator itself also performs wind power generation. The wind power generation system according to claim 3, wherein the blades of the propeller in the windmill of the aforementioned small propeller-type wind power generator are viewed from the side, protruding greatly at the front end of the main portion to form a forward curved portion, and the forward curved portion The front end face is orthogonal to the axis of the rotation axis, and its front face is approximately fish-shaped, and its front edge end and rear edge end are located on the same rotating arc. The wind power generation system according to any one of claims 1 to 4, wherein the small windmill is arranged around the pillar of the large-scale propeller-type wind power generator, and is inclined to the right with the pillar as a center and crossing the front and rear directions at 45 degrees At each intersection of the line and the left-inclined line, the small windmill is a windmill with higher and lower heights alternately set in the course direction, and it is staggered one by one in the order of the front and back courses.

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