KR101060082B1

KR101060082B1 - Wind power acceleration system

Info

Publication number: KR101060082B1
Application number: KR20090012753A
Authority: KR
Inventors: 김도명
Original assignee: 김도명
Priority date: 2009-02-17
Filing date: 2009-02-17
Publication date: 2011-08-29
Also published as: KR20100093700A

Abstract

The present invention relates to a vertical axis wind system, and more particularly to a wind acceleration system to block the reverse wind and the forward wind to increase the rotational speed of the wind turbine.

In a vertical axis wind system that rotates the rotor to mechanical energy by using the flow characteristics of air and obtains electricity from this mechanical energy, the blade can be rotated even at low wind speeds and has its own drag moment at the limit speed. The outer circumference forms a long arc to increase the area of wind, and the tip portion of the arc, in which the rotational direction of the blade (CCW) and the incoming wind collide with each other, is a plurality of vertical types shorter than the length of the outer circumference folded in a V-shape. A cylindrical rotary part to which the blade is connected; Mounted on the frame connecting the upper plate and the lower plate, which has been bent in a square pipe circularly close to the outer peripheral surface of the cylindrical rotating part, divided by 180 degrees on a vertical and horizontal basis, the 45 ° angle portion of the third quarter is the vertical type A reverse wind blocker having a closed box of a rhombic shape equal to the length of the vertical blades to block winds that collide with the rotational direction CCW of the blades; A 15 [deg.] Angle portion of the quadrant 4 comprises: a forward wind accelerator having a closed box of a rhombic shape equal to the length of the vertical blade to accelerate the rotational speed of the vertical blade; Simultaneously moving the reverse wind blocker and the forward wind accelerator in the direction of the blowing wind or independently moving the reverse wind blocker Two wings of different lengths, including a tail wing that operates differently according to the wind speed by the folding method, inlet angle of the wind flowing into the cylindrical rotating portion is larger than the exit angle to accelerate the wind speed or the reverse wind when the rapid wind speed is inflowed. It provides a wind acceleration system characterized by having a drag moment by moving the block in the forward direction to extend the reverse block range.

According to the present invention, the system structure is simple and can be rotated even from the blowing wind from various directions, the inlet through the reverse wind blocker to block the wind hitting the rotational direction of the blade and the forward wind accelerator to accelerate the incoming wind By designing the angle larger than the outlet angle, the outflow wind speed is accelerated compared to the inflow wind speed, which greatly increases the rotational speed of the wind turbine.

In addition, by designing the tip of the vertical blade in a V-shape, not only has a drag moment of its own, but also moves the reverse wind block in the forward direction, which interlocks with the tail wing, even in rapid wind speeds such as strong winds, thereby expanding the reverse blocking range. It has a moment of drag so that the power generation is stable.

In addition, the three sides of the reverse wind blocker and the forward wind accelerator can be used as a billboard, which has a unique effect of generating ancillary profits in addition to electricity production.

Blade, vertical axis wind system, reverse wind blocker, forward wind accelerator

Description

Step-up Wind Speed System

The present invention relates to a vertical-axis wind turbine (VAWT), more specifically wind acceleration to increase the rotational speed of the wind power generator to block the reverse winds facing the rotation direction and to accelerate the forward winds It relates to a step-up wind speed system.

In general, wind power generation is a technique of converting a rotor into mechanical energy by using the aerodynamic characteristics of the kinetic energy of the flow of air, and converting the rotor into mechanical energy to obtain electricity. In recent years, as a means of coping with the depletion of fossil fuels and severe environmental destruction caused by fossil fuels, efforts and research and development have been actively carried out to secure natural energy, i.e. solar power, tidal power, and wind power, which have unlimited resources and no pollution. It is becoming. In Korea, wind power generation is also effective as a means of green revolution because the four seasons change clearly and abundant wind blows.

Wind power systems have a horizontal axis wind turbine (HAWT) with a propeller-type that is horizontal to the direction of the axis of rotation, ie the direction of rotation of the wind, and the axis of rotation to the direction of the wind. It is classified as a vertical-axis wind turbine (VAWT) with vertical Dariusus-type and Savonius-type. In particular, the wind power generation by the vertical axis wind system is to obtain electricity by operating the generator through the power transmission device to receive the wind power from the wind blowing in various directions, so to maximize the efficiency of the wind power energy loss You need to get the most out of it.

In this regard, the Korean Patent Publication No. 10-0810990 (2008.03.11) proposed a 'wind power generation system employing a jet wheel type vertical shaft turbine'.

According to this technique, in a wind power generation system having a plurality of turbines coaxially installed perpendicularly to a support and a generator for driving them, an impeller (10) in which internal flow is blocked through not only the upper and lower plates but also the plurality of arc-shaped blades (10) is blocked. ); It is fixed to the frame connected to the shaft of the impeller, the inlet guide vane of the arc-shaped to form a torque by accelerating the wind speed incident on the plurality of blades to convert to a constant pressure between the plurality of blades to generate a torque 21); Tail wing portion 50 for adjusting the position relative to the wind direction is fixed to the frame; A gear device positioned between the shaft of the impeller and the generator, the gear device driving the impeller to maintain a constant tip speed ratio so as to have a high energy conversion efficiency regardless of the wind speed that changes frequently from a fixed frequency of the power system; And a differential pressure is input from a pitot tube or a speed sensor installed in the inlet guide vane, and the wind speed is increased to control the feedback signal of the jet when controlling the speed of the jet so that an incidence angle exists between the wind direction and the inlet guide vane inlet. And a control device for controlling the rotary shaft of the guide vane by using a step motor to keep the tip rotation speed ratio constant.

However, this technology has a system structure with an inlet guide vane for rapidly changing the air flow and a separate step motor controller for controlling the speed signal feedback as the wind speed increases and adjusting the angle of incidence of the inlet guide vanes 20 and 21. And because the electrical device is very complicated and the manufacturing cost is too high compared to the amount of power generation due to the characteristics of the vertical axis wind power generator is not economical.

In addition, increasing the wind speed under the same conditions, as can be seen in the Bernoulli theorem and Venturi effect, wind speed is also accelerated when passing through a relatively narrow exit angle compared to a wide angle of incidence. The inlet guide vanes 20 and 21 of the inlet angle of the electrically control the inlet angle adjustment for preventing the reverse rotation of the blade and the wind speed control, while the outlet back side guide vanes 30 are controlled by the action of the tail blades by the wind. Since it has a different function, the size of the incidence angle and the exit angle is still a problem that can not be made at the same time according to the direction of the wind.

Therefore, the present invention has been made to solve the above problems, the structure of the first system is very simple, and the forward wind at the same time blocking the reverse wind encountered when the blade rotates counterclockwise (CCW) It is an object of the present invention to provide a wind acceleration system that accelerates the wind speed flowing into the blades to increase the rotational speed of the wind power generator even at a low wind speed of about 3m per second.

Another object is to provide a wind acceleration system that stably increases the rotational speed with its own drag moment by extending the reverse blocking range by moving the reverse wind block in the forward direction when a sudden wind speed inflow is caused by strong wind. It is done.

According to a feature of the present invention for achieving the above object,

In a vertical axis wind system in which a rotor is rotated to change mechanical energy by using air flow characteristics, and electricity is obtained from the mechanical energy.

It is possible to rotate even at low wind speeds, and the outer circumference of the blade has a long arc to increase its area of wind so that its limit moment has its own drag moment, and the rotational direction of the blade (CCW) and the incoming wind collide with each other. The front end portion of the cylindrical rotation is connected to a plurality of vertical blades shorter than the length of the outer circumference folded in a V-shape;

Mounted on the frame connecting the upper plate and the lower plate, which is a band of the square pipe circularly close to the outer peripheral surface of the cylindrical rotating portion, divided by 180 ° on a vertical and horizontal basis, the 45 ° angle portion of the third quarter is the vertical A reverse wind blocker having a closed box of a rhombic shape equal to the length of the vertical blade to block winds that strike the direction of rotation of the shaped blades (CCW);

A 15 [deg.] Angle portion of the quadrant 4 comprises: a forward wind accelerator having a closed box of a rhombic shape equal to the length of the vertical blade to accelerate the rotational speed of the vertical blade;

Simultaneously moving the reverse wind blocker and the forward wind accelerator in the direction of the blowing wind or independently moving the reverse wind blocker Two wings with different lengths include a tail wing that behaves differently according to the wind speed by the folding method.

The inlet angle of the wind flowing into the cylindrical rotating portion is larger than the outlet angle to accelerate the wind speed, and in the case of rapid wind speed inflow, the reverse wind blocker is moved forward to extend the reverse blocking range to have a drag moment. Provide an acceleration system.

Preferably, the reverse wind blocker is to prevent the wind hitting the direction of rotation of the blade and at the same time to round about 15 ° toward the forward wind accelerator in the portion close to the rotor to induce the wind in the forward direction It features.

According to the wind speed acceleration system of the present invention, the following effects are obtained.

1) The inlet angle is designed to be larger than the exit angle by rotating against the wind blowing from various directions, and through the reverse wind blocker to block the wind colliding with the rotational direction of the blade and the forward wind accelerator to accelerate the incoming wind. In addition, the wind speed of the wind generator is greatly increased by accelerating the outflow wind speed compared to the incoming wind speed.

2) The tip of the vertical blade is designed in V-shape to have a drag moment of its own, and the reverse blocking range is extended by moving the reverse wind block which interlocks with the tail wing in the forward direction even in the strong winds such as strong winds. It has a moment of drag so that the power generation is stable.

3) Unlike blades with a large amount of rotation, three sides of the reverse wind blocker and forward wind accelerator, which have almost no rotation, can be used as billboards to generate additional revenue in addition to electricity production.

4) And the wind acceleration system of the present invention has a unique effect that can significantly reduce the work process and manufacturing cost and produce a large amount of power generation compared to the same system because the structure of the system is very simple compared to the prior art.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. The prior art should be interpreted as such. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a perspective view showing a conventional wind speed acceleration system having a complex structure, Figure 2 is a three-dimensional view showing a cylindrical rotating portion of the wind speed acceleration system according to a preferred embodiment of the present invention, Figure 3 is a wind power according to a preferred embodiment of the present invention A plan view specifically showing the acceleration of the wind speed by guiding in the forward direction at the same time as the reverse wind blocking of the acceleration system, Figure 4 shows in detail the reverse wind block and the forward wind accelerator of the wind acceleration system according to an embodiment of the present invention 5 is a plan view showing the reverse wind block and the forward wind accelerator frame structure of the wind acceleration system according to a preferred embodiment of the present invention, Figure 6 is a reverse wind of the wind acceleration system according to a preferred embodiment of the present invention The blocking part and the forward wind accelerator are rotated at the same time by the tail wing. Indicated top view, Figure 7 is a perspective view showing the front of the wind acceleration system according to a preferred embodiment of the present invention and Figure 8 shows a perspective view showing an advertisement in the rear portion for FIG.

The core technical configuration for implementing the wind speed acceleration system of the present invention is largely composed of a cylindrical rotary part 100, a reverse wind blocker 230 and a forward wind accelerator 240, the tail wing 300.

Hereinafter, with reference to Figures 2 to 8 with reference to the wind acceleration system according to a preferred embodiment of the present invention in detail,

First, the wind acceleration system of the present invention is a technology applied to a vertical axis wind power system that rotates a rotor to mechanical energy by using a flow characteristic of air, and obtains electricity by the mechanical energy. By simplifying the manufacturing cost is significantly lowered, in particular, the wind energy (or wind speed) to maximize the use of the loss without loss is characterized by the small and large rotational torque.

In other words, the air power by the wind based on the characteristics of the wind turbine

It is a technical feature of the present invention to simplify the system structure from the equation and to maximize the wind speed v value as much as possible.

here

Is the air density [kg / m ³ ], A is the projected area [m ² ] of the turbine rotor, and υ is the wind speed [m / s].

In the above equation, since the wind energy is proportional to the third power of the wind speed, for example, when the wind speed is doubled, the wind energy is eight times.

Therefore, as a result of manufacturing and testing a prototype of the wind acceleration system of the present invention, the wind speed was 94 [rpm] at 3.1 [m / s], and at 132 [rpm] and 4.2 [m / s] at 3.6 [m / s]. It was measured at 192 [rpm], respectively.

Referring to Figure 2, the main components of the cylindrical rotating part 100 of the wind acceleration system according to a preferred embodiment of the present invention is a vertical blade (Shade), shaft (Shaft), bearing (Bearing), taper ruler (Taper) Roller Bearing) and Gearbox.

The vertical blades 110a to 110d can rotate at low wind speeds of 3 [m / s], and the outer edges of the vertical blades form long arcs to have their own drag moments at the limit speed Stall. The area is increased, and the tip portion of the arc where the rotational direction (CCW) of the vertical blade and the incoming wind collide with each other is shorter than the length of the outer circumference folded in the V-shape.

The rotary shaft 120 is rotated by wind, but the plurality of vertical blades (110a ~ 110d) and the plurality of vertical blades (110a ~ 110d) are spaced apart and connected to the rotary shaft 120, the rotary shaft 120 Connecting members 130a and 130b are connected to each other, and the bearing 140 supports and rotates the tail wing 300 at the upper end of the rotary shaft 120, and the reverse wind block 230 at the lower end. A tapered ruler bearing 150 for supporting and rotating the forward wind accelerator 240 and a speed increaser 160 for transmitting power of the rotating shaft 120 are mounted.

Bearing 140 is a kind of member that supports the mandrel to enable the rotor to rotate, as described above and will not be described herein any further.

The tapered ruler bearing 150 is a member supporting the mandrel of the reverse wind blocker 230 and the forward wind accelerator 240 of the wind speed acceleration system of the present invention. It is designed to intersect at a point on the line. For this reason, it rolls on a roller track surface and is guided by the big jaw of an inner ring by the combined force which an inner ring track surface and an outer ring track surface receive. Accordingly, the reverse wind blocker 230 and the forward wind accelerator 240 sufficiently endure the vertical load on the rotational axis and are more easily rotated.

The speed increaser 160 is a power transmission device for transmitting mechanical energy of the cylindrical rotating part 100 that is rotated by the force of the wind to the generator. In general, the speed increaser 160 rotates wind energy having a large torque at a low rotation speed. This device is for use in generators with small torque. The type of gearbox is mainly used in a friction disk, belt, chain, gear type gearbox in a small wind power generator, and any one of them may be selected in the present invention.

In addition, the wind speed acceleration system of the present invention can be directly connected to the generator without using the speed increaser 160. In other words, the use of the speed increaser 160 is to synchronize with the generator so as to produce a constant rotational torque even with the change in the wind speed. In the present invention, even if the wind speed increases rapidly due to strong wind or the like, the vertical blades 110a ˜ 110d) not only has a drag moment in itself, but also because it is designed to move the reverse wind block 230 in the forward direction through the deformed design of the tail wing portion 300 to expand the reverse block range, Direct connection with the generator is possible without using. This will be described in more detail in the tail wing section described later.

With reference to Figures 3 to 5, while blocking the reverse wind with respect to the wind flowing into the cylindrical rotary part 100 of the wind acceleration system according to a preferred embodiment of the present invention to accelerate the wind speed in the forward direction To illustrate:

The reverse wind blocker 230 and the forward wind accelerator 240 block the reverse wind colliding with the rotational direction (CCW) of the blade flowing into the cylindrical rotating unit 100 and at the same time induces the forward wind to the wind speed As a means for accelerating, the upper plate 210 and the lower plate 220, which are formed by bending a square pipe in a circular shape to be close to the outer circumferential surface of the cylindrical rotating unit 100, are connected to each other, and one end (the upper plate: 210) is the cylindrical rotating unit ( The shaft of the 100 is connected to a separate bearing 140 is fixed to the upper plate 210 of the frame 200, the other end (lower plate: 220) is tapered mounted on the rotating shaft 120 of the cylindrical rotating part 100 It is fixed by the roller bearing 150.

More specifically, as shown in FIGS. 3 and 4, the vertical blades are divided into 180 degrees on a vertical and horizontal basis, and the vertical blades 110a to 110d are formed at an angle of 45 degrees to the third quarter of the outer circumferential surface of the cylindrical rotation part 100. Reverse wind shield 230 having a closed box having a rhombus shape equal to the length of the vertical blade is installed to block wind hitting the rotational direction (CCW) of the), and further, Forward wind accelerator 240 having a closed box having a rhombic shape equal to the length of the vertical blades in order to accelerate the rotational speed of the vertical blades 110a to 110d in the 15 ° angle portion of the outer circumferential surface 4/4. Are respectively installed.

In addition, the reverse wind blocker 230 blocks the wind colliding with the rotational direction (CCW) of the vertical blades (110a ~ 110d) and at the same time the outer peripheral surface of the cylindrical rotating portion 100 to induce wind in the forward direction It is configured to round about 15 ° in the direction of the forward wind accelerator 240 in the vicinity.

On the other hand, with reference to Figure 5, the frame structure of the reverse wind block 230 and the forward wind accelerator 240 of the wind acceleration system according to a preferred embodiment of the present invention has a 50 × 50 × 2.3t standard The square pipes are treated with a bedding, but are made of a circular upper plate 210 and a lower plate 220 of an inner diameter of 2000 [mm] and an outer diameter of 1800 [mm] circumferentially from the inner diameter, and then a length of 3000 [ mm] The overall shape is made into rhombus shape by connecting with square pipe (50 × 50 × 2.3t).

The member used here is made of light weight as much as possible using a 2t standard FRP and a plate bar (flat bar) and a diameter of 8mm sus bolt of 30 × 3t standard for attaching the FRP to the square pipe. In particular, the wind acceleration system of the present invention is simple in structure, but the total weight is less than 75kg and the size of the rotor blades 3m in the low wind speed of 3m ultra-slow wind speed of the soft spring breeze, can produce power up to 500kw It can be designed to be.

Referring to Figure 6, the tail wing portion 300, Means for moving the turbine to rotate in the direction of the blowing wind or for moving the drag device attached to the turbine. Generally, the tail wing is generally main-lined, considering forward wind only. If the wind turbine is equipped with a turbo function and drag system for low wind speed or rapid wind speed increase, the turbo and drag system can be moved through the modified design of the straight tail wing.

Therefore, in the wind acceleration system according to a preferred embodiment of the present invention, the tail wing portion 300 is connected to the rotary shaft of the cylindrical rotating portion 100 by a separate bearing 140 and installed on the upper plate 210 of the frame 200. ) And the reverse wind blocker 230 and the forward wind accelerator 240 are integrated to allow simultaneous 360 ° movement in the direction of optimal wind blowing so that the inlet angle of the wind is greater than the outlet angle. In addition to the design, the reverse wind blocker through the modified design so that the two wings different in length of the tail wing portion 300 in accordance with the wind speed by the folding method in preparation for a sudden wind speed such as strong winds ( It is uniquely designed to extend the reverse blocking range by moving 230 forward.

7 and 8, the reverse wind block 230 is rotated to the extent that the wind is moved by the tail wing portion 300, unlike the vertical blades (110a ~ 110d) that rotates in accordance with the wind speed Not only this, but the shape is rounded in the front, the outer circumference is arcuate, and the back is formed in a closed box of a generally rhombic shape with a perfect plane, so that the three sides with a long length on the vertical axis are exposed outward. It can be used to generate additional income in addition to electricity production.

In addition, the forward wind accelerator 240 also has almost no rotation like the reverse wind blocker 230, and the front and rear surfaces are completely flat, and the outer circumferential surface is formed in a closed box having a generally rhombic shape, which forms an arc. Since three sides having a length are exposed to the outside, it can be used as a billboard.

As such, the wind acceleration system of the present invention has a simple structure and is light in weight and easy to install because it uses a member such as FRP, and the inlet angle (Ø ₁ ) by the reverse wind block and the forward wind accelerator is the exit angle. It is relatively wider than (Ø ₂ ) and can accelerate the wind speed flowing into the vertical blades, so it can produce a large rotational torque even at low wind speeds of around 3 [m / s]. Sufficient development is possible even in small areas.

In addition, the wind speed acceleration system of the present invention has a drag moment of its own by the unique design of the vertical blade, the reverse wind block 230 that interlocks independently with the tail wing portion 300 in preparation for rapid wind speed, such as strong winds By moving in the forward direction, the reverse blocking range is extended to have a drag moment, so that the power generation is stable.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

1 is a perspective view showing a conventional wind acceleration system having a complicated structure

Figure 2 is a three-dimensional view showing a cylindrical rotating portion of the wind acceleration system according to a preferred embodiment of the present invention

Figure 3 is a plan view showing in detail the appearance of accelerating the wind speed by guiding in the forward direction simultaneously with the reverse wind blocking of the wind acceleration system according to a preferred embodiment of the present invention

Figure 4 is a three-dimensional view showing in detail the reverse wind block and the forward wind accelerator of the wind acceleration system according to a preferred embodiment of the present invention

Figure 5 is a plan view showing the structure of the reverse wind block and the forward wind accelerator frame of the wind acceleration system according to a preferred embodiment of the present invention

Figure 6 is a plan view showing a state in which the reverse wind block and the forward wind accelerator rotates at the same time by the tail wing of the wind acceleration system according to a preferred embodiment of the present invention

Figure 7 is a perspective view showing the front of the wind power acceleration system according to a preferred embodiment of the present invention

FIG. 8 is a perspective view illustrating an advertisement on a back portion of FIG. 7; FIG.

100: vertical rotating portion 110a ~ 10d: blade

120: rotating shaft 130a, 130b: connecting member

140: bearing 150: tapered roller bearing

160: gearbox 210: top plate

220: lower plate 230: reverse wind shield

240: forward wind accelerator 231, 241: billboard

300: tail wing

Claims

Mounted on the frame connecting the upper plate and the lower plate, which has been bent in a square pipe circularly close to the outer peripheral surface of the cylindrical rotating part, divided by 180 degrees on a vertical and horizontal basis, the 45 ° angle portion of the third quarter is the vertical type A reverse wind blocker having a closed box of a rhombic shape equal to the length of the vertical blades to block winds that collide with the rotational direction CCW of the blades;

Wind speed is characterized in that the inlet angle of the wind flowing into the cylindrical rotating portion is larger than the exit angle to accelerate the wind speed or to move the reverse wind block in the forward direction to extend the reverse blocking range in the case of sudden wind speed inflow has a drag moment system

The method of claim 1, wherein the reverse wind blocker blocks the wind that strikes the rotational direction of the blade and at the same time rounded by 15 degrees toward the forward wind accelerator in the portion close to the rotor to induce the wind in the forward direction Wind acceleration system, characterized in that

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