KR102288688B1 - Twin Blade Type Wind Turbine - Google Patents

Abstract

The present invention provides a small and medium-sized twin blade-type wind turbine, wherein the direction of a blade is changed in accordance with a direction of incoming wind including a breeze to facilitate reception of wind, thereby enhancing the efficiency of power generation and providing simple maintenance. The twin blade-type wind turbine in accordance with the present invention comprises: a tower; a main body installed on the top of the tower; a power generator which generates power by rotational force of a front blade and a rear blade installed by a shaft on the front and rear sides of the main body to be able to rotate independently; a braking means for preventing speeding of a main shaft; and a rudder installed on the main body, wherein the power generator is converted into an external device and installed on the top of the tower to ensure convenience of maintenance and the rudder is modified into a twin blade-type form, resulting in responding sensitively to even a breeze to steer the main body and the front and rear blades toward the direction from where the wind is blowing, so that efficiency of power generation is enhanced. In addition, electricity generated in the power generator passes through a relay ring and a brush and then is accumulated in a battery.

Description

Twin Blade Type Wind Turbine

The present invention relates to a wind power generator that achieves large-capacity wind power generation by doubling the amount of power produced by installing up or down type blades on the front and back of the fuselage, and reduces manufacturing costs and occupies a small area. It is related to a twin-wing type wind power generator that responds to high power generation efficiency and doubles the maintenance and management convenience of the generator.

A power plant that can be installed anywhere on land or sea, and can produce electricity in an environment-friendly way, even if local obstacles are pointed out due to its compact facility, short installation period, and small occupied area that cannot be compared to hydropower, thermal power, and nuclear power generation Wind power generators that generate electricity by rotating the blades with wind power and rotating the rotor with the rotational power are by far the best.

When it comes to wind power generators, the first comes to mind of a large wind power generator consisting of a long tower erected in a mountainous area, on the sea or on the shore, a generator installed on the top of the tower, and three large blades that rotate the main shaft of the generator.

When generating power, low-frequency and buzzing noise that harms human body and animals and plants, huge facility cost, difficulty in generating power unless the wind of a suitable wind speed arrives, difficulty in maintaining the generator and blades located at high altitude, There are many problems, such as securing a long distance between wind turbines.

Due to these disadvantages, the existing large-scale wind power generators are not suitable for installation near private houses in rural areas.

The present inventors conscious of this problem have proposed a small wind power generator. That is registered Patent No. 10-0976382. In this prior art, by installing upwind type and downwind type blades at the front and back of the main body, it is possible to generate electricity even in a weak wind, and it can be produced by doubling the power. It is a miniaturized double-leaf wind power generator for easy installation and easy maintenance.

However, in the prior art, it is too difficult to repair the generator when periodic maintenance or unexpected maintenance is required because the generator is located inside the top of the tower like the existing large wind generator.

Another weakness is that the wing cannot properly cope with the breeze in the direction of the wind, in other words, it is not easy to change the direction of the wing, so the power generation efficiency cannot be improved.

Registered Patent No. 10-0976382

SUMMARY OF THE INVENTION It is an object of the present invention to provide a twin-wing type wind power generator that can increase power generation efficiency because the blades move in the direction in which the wind arrives even in the breeze, and thus can easily meet the wind, and is also convenient for maintenance and management of the generator.

The above technical task is a tower and a main body installed on the top of the tower, a generator that is installed on the front and rear of the main body and installed so that the front and rear wings rotate together to generate power independently, a brake device for preventing overspeed of the main shaft, and a steering wheel installed on the body;

By changing the generator to an external type and installing it at the top of the tower, the maintenance and management convenience is promoted, and the steering wheel is converted into a bi-lobed type to respond sensitively to the breeze to steer the main body and the front and rear wings in the direction of the wind to generate power. Efficiency is increased, and the electricity produced by the generator can be implemented as a single-wing wind turbine so that electricity is stored in the storage battery via relay rings and brushes.

As described above, by providing the twin-wing type wind power generator according to the present invention, the external generator is exposed to the outside of the tower, so maintenance is easier compared to the conventional tower-built generator, and the twin-winged steering wheel is compared to the conventional single-handed steering wheel. The response to the breeze is quick, so you can quickly steer the main body, front and rear wings in the direction of the breeze to increase electricity production.

1 is a side view of a twin-winged wind power generator according to the present invention.
Figure 2 is a cross-sectional view taken along line AA of Figure 1;
3 is an upper structural view of a tower which is a main part of a twin-winged wind power generator according to the present invention.
4 is a cross-sectional plan view showing the installation state of the relay ring and the brush of the twin-wing type wind power generator according to the present invention.
FIG. 5 is an enlarged view of part "B" of FIG. 3;
FIG. 6 is an enlarged view of part "C" of FIG. 3;

Next, the present invention will be specifically described with reference to the accompanying drawings made mainly of preferred embodiments, the following description is to give examples of parts, elements, actions, products and methods considered to be within the scope of the present invention It is in no way intended to limit the scope of the invention by those not specifically disclosed or clearly indicated. The parts, elements, acts, articles, and methods described herein are intended to fall within the scope of the present invention insofar as they can be combined and rearranged other than as expressly described herein.

The twin-wing type wind power generator according to the present invention includes a main body (2) rotatably installed on the top of the tower (1); a front wing (4) installed in front of the main body (2); a rear wing (5) installed at the rear of the main body (2) and rotated in the opposite direction to the front wing (4); a bi-lobed steering wheel (6) installed on the main body (2); a generator (3) installed on the main body (2) to generate power with rotational force transmitted through the front wings (4) and the rear wings (5); a main shaft (9) connected to the rotary shaft (7) of the generator (3) by a coupler (8); The driving bevel gears 13 and 14 that are integrally mounted on the inner ends of the blade shafts 11 and 12 of the front and rear blades 4 and 5 and rotate by the rotational force of the front and rear blades 4 and 5. ); a driven bevel gear 10 mounted on the main shaft 9 and rotated to operate the generator 3 in conjunction with the driving bevel gears 13 and 14; an outer protection tube 20 standing vertically on the upper end of the tower 1 to protect the components below the lower plate 2a of the main body 2; a support pipe 22 attached to surround the main shaft 9 in the lower plate 2a of the main body 2; a shaft protection pipe 23 covered with the lower half 9a of the main shaft 9 and fixed to the inner end of the support pipe 22; a bearing (20') installed between the outer protective tube (20) and the support tube (22); a relay ring (27) connected to the generator (3) and an electric wire (29) to relay electricity produced by the generator (3); and a brush 28 that receives electricity from the relay ring 27 and sends it to the storage battery connected to the electric wire 30 .

Specifically, as shown in Figure 1, the main body 2 is installed on the upper end of the tower 1, the generator 3 is installed on the main body 2, and the front wings ( 4) and the rear blade 5 are installed side by side on the same horizontal line, and the steering wheel 6 is installed on the main body extension extending from the main body 2 to the rear blade 5 .

The tower (1) is a vertical beam type iron control system, and is erected vertically on the reinforced concrete foundation on land or the seabed including mountains.

As confirmed in the conventional wind power generation facility and the prior art, the main body 2 is installed in a rotatable form at the upper end of the tower 1, so a redundant description thereof will be omitted.

And, the part formed as long as the rear of the airplane from the main body 2 toward the rear wing is the main body 2 and the front wing 4 and the rear wing 5 in order to secure the installation space of the steering wheel 6 and wind coming from any direction. ) is necessary to make it conformable.

In Figure 2, it is preferable that the front blade 4 forms three blades on the hub at 120° intervals. In addition, it is set at an inclination of 2 to 4° with respect to the vertical line so as not to collide with the tower 1 during rotation. Preferably, it is 3°. The hub case covered on the tip of the hub for the front wing 4 has a pointed hemispherical shape so that the wind can easily enter.

Since the front blade 4 is inclined by about 3° with respect to the vertical plane, it rotates while compensating for the vertical angle of the blade shaft 11 by the bearing 17 to some extent.

The rear blade 5 is installed to rotate in the opposite direction to the front blade 4 at the rear of the main body 2, and three blades are installed in the hub at intervals of 120°. A hub case of a gentle hemispherical shape is provided at the outer end of the hub of the rear wing 5 so that the wind coming through the front wing 4 is smoothly discharged.

When the front wing 4 and the rear wing 5 rotate in the same direction, excessive centrifugal force and torsional stress are applied to the tower (1) and the main body (2), causing the center of rotation to shake and vibration is large, and in the worst case, there is a risk of overturning there is also So, the front wing 4 and the rear wing 5 are rotated in opposite directions to offset the rotational force.

The steering wheel (6) is a double-winged type that responds sensitively to the breeze, and the main body (2) rotates horizontally on the tower (1) in accordance with the direction in which the wind arrives, so that the front wings (4) and the rear wings (5) ) is to play the role of a non-powered yaw device that directs the direction in which the wind blows.

The conventional yaw device was rotated by a transmission device including a speed reducer, ring gear, and pinion, but if power is not supplied, operation is impossible. As it is a non-power type, there is no fear of power generation damage due to a power outage.

It is possible to grasp the specific internal structure of the main body 2 through FIG. 3 . In this figure, the rotating shaft 7 of the generator 3 is connected to the upper end of the main shaft 9 by a coupler 8 . The driven bevel gear 10 is mounted on the main shaft 9, and the driving bevel gears 13 and 14 are mounted on the inner ends of the blade shaft 11 for the front blade and the blade shaft 12 for the rear blade. Each of the driving bevel gears 13 and 14 is meshed with the driven bevel gear 10 in the opposite direction to transmit the rotational force of the front blade 4 and the rear blade 5 to the driven bevel gear 10 to generate a generator (3) turns.

The main shaft 9 rotates depending on the upper and lower bearings 15 and 16 loaded in shaft holes drilled on a single vertical line in the upper and lower plates of the main body 2 serving as a machine room, and each of the blade shafts (11) (12) is rotated depending on the bearings (17, 18) loaded in the shaft holes drilled on both sides of the main body (2). The upper bearing 15 and the lower bearing 16 are thrust bearings.

When the angle of the front wing (4) and the rear wing (5) is changed in the direction in which the wind arrives, the main body (2) also conforms to the angle of the front wing (4) and the rear wing (5) around the main shaft (9) must rotate This is the reason that the main body 2 can be rotated on the main shaft 9 through the lower bearing 16 loaded with the lower bearing 16 between the shaft hole on the lower plate 2a side and the main shaft 9 .

The lower plate (2a) is a disk rotated about the main shaft (9).

A wire hole 31 is formed on one side of the lower plate 2a. The wire 29 derived from the output end of the generator 3 is introduced into the wire hole 31 to be introduced into the protective tube 20 .

In addition, a disk 19 is mounted at the lower end of the lower half 9a of the main shaft 9 located below the lower plate 2a, and an outer protective tube installed between the upper end of the tower 1 and the lower plate of the main body 2 A brake device 21 for controlling the overspeed rotation of the main shaft 9 is installed at the inner lower end of the 20 .

The disk 19 prevents over-speed rotation of the main shaft 9 under the control of the braking device 21, so that the main shaft 9, the driven bevel gear 10, the driving bevel gears 13 and 14, and the bearings 15~ 18), it contributes to fire prevention by delaying the wear and tear of rotation and suppressing the heat generated during rotation.

An annular groove 2b is formed on the bottom surface of the lower plate 2a. The annular groove (2b) is formed concentrically with the main shaft (9), and loosely fits the upper end of the outer protective tube (20) to avoid friction with the outer protective tube (20), which is a non-rotating body (2), and adapts to the wind direction. to make it rotate.

The outer protective tube 20 includes a main shaft lower half 9a, which is a component below the lower plate 2a, a support tube 22, a bearing 24, a relay ring 27, a brush 28, and an outer protective tube 20. The inner wire 29, the disk 19, and the brake device 21 are protected by blocking the outside air, and the outward flange at the lower end is fixed to the upper end of the tower 1 with a bolt and a nut.

At the same time, on the bottom surface of the lower plate 2a, a support pipe 22 is installed concentrically with the main shaft 9. The support pipe 22 has an outward-facing flange 22a integrated at the upper end, and the flange 22a is mounted on the lower surface of the lower plate 2a on the outer side of the main shaft 9 and fastened to be integral with the body. Make it rotate according to (2).

A bearing 20 ′ is also installed between the inner peripheral surface of the outer protective tube 20 at the same position as the upper end of the outer peripheral surface of the support tube 22 . The support pipe 22 is stably supported by the bearing 20 ′ and rotates together with the body 2 .

In addition, a plurality of washer-type perforated plates 32 are fitted on the lower inner circumferential surface of the support pipe 22 and are fixed to the inner end of the perforated plate 32 to protect the lower half 9a of the main shaft 9 The upper end of the shaft protective tube 23 is attached.

Here, the perforated plate 32 is the electric wire 29 drawn from the output end of the generator 3 and introduced into the outer protective tube 20 through the electric wire hole 31 formed in the lower plate 2a vertically downward. It means that the wire hole (32') is perforated.

The shaft protection tube 23 is coupled to the bearing 24 to which the upper end is coupled and the lower bearing 25 to which the lower end is coupled, so that the lower half of the main shaft 9a is rotatable together with the main shaft 9 . The lower bearing 25 is installed in the main shaft lower half protective pipe hole (not shown) drilled in the center of the supporter 26 installed in the upper outer protective pipe 20 of the braking device 21, so that the main shaft lower half 9a rotates. Avoid shaking when.

On the other hand, the relay ring 27 is installed on the shaft protective tube 23, and the brush 28 is installed in the outer protective tube 20 of the same height. The relay ring 27 is integrated with a bolt or rivet by interposing a washer-type conductive plate between the upper and lower insulating rings and the insulating rings made of yeopjeon-shaped insulators. The brush 28 is made of carbon plate, and is always in contact with the outer peripheral surface of the conductive plate of the relay ring 27 .

The relay ring 27 has the end of the wire 29 drawn from the output terminal of the generator 3 and drawn into the wire hole 31 of the lower plate 2a and the wire hole 32' of the perforated plate 32. is connected, and the electric wire 30 derived from the brush 28 is connected to a storage battery (not shown).

Since the brush 28 is a consumable item that wears out faster than the relay ring 27, in order to increase the power storage efficiency, the brush 28 should be replaced as soon as the power reception rate is reduced due to wear. In consideration of this point, as shown in FIG. 4 , in the outer protective tube 20, the brush 28 is located at the place where the brush 28 is located, and the inlet and outlet 35 for the brush is drilled, and the inward brush clip 37 for the brush is attached to the inner surface. The mold clip plate 36 is installed in the in-and-out port 35 for the brush, and it is reorganized into a structure that stabilizes the posture of the brush 28 by fastening it with a bolt to facilitate brush replacement.

The electric current produced by the generator 3 is transmitted to the relay ring 27 through the electric wire 29 , and the electric current of the relay ring 27 is received by the brush 28 and is stored in the storage battery through the electric wire 30 .

On the other hand, if the generator 3 is left exposed to the atmosphere, damage due to lightning, natural corrosion, pollution, and dust accumulation are concerned about fire due to heat of the generator 3 . With this in mind, the cover 33 is covered on the generator 3, and the saddle 34 attached to the lower end is fastened to the upper plate of the main body 2 with a bolt to stabilize the covering state.

In addition to this, in the main body 2 of the present invention, related devices including the direction change unit for the main body disclosed in the above-mentioned Patent No. 10-0976382, the angle adjustment unit for the front and rear wings, and the speed increase unit can be used. .

Through the above description, there is no hesitation in estimating that if the generator 3 is changed to an external type and installed at the top of the tower 1, it will be very easy to maintain and manage.

In addition, the double-leaf steer 6 can be steered so that the main body 2 and the front and rear wings 4 and 5 are directed in the direction of the wind by reacting sensitively to the breeze such as a breeze, so that the power generation efficiency is improved. contribute substantially to

In addition, since the electricity produced even though the external generator is stored in the storage battery via the relay ring 27 and the brush 28, there is no question about the effectiveness of the wind power generator having the external generator 3 .

The twin-wing type wind power generator of the above configuration is particularly suitable for small-scale power generation that can be installed anywhere the wind blows because the initial installation cost is low, occupies a small site, and the noise of the power plant is negligible. This is a very promising invention.

1: Tower 2: Body
2a: lower plate 2b: electrician
4: front wing 5: rear wing
6: Steering wheel 7: Generator shaft
9: Mandrel 9a: Lower half of mandrel
10: driven bevel gear 11,12: wing shaft
13,14: drive bevel gear 19: disc
20: outer protection tube 21: brake device
22: support tube 23: shaft protection tube
26: supporter 27: relay ring
28: brush 29, 30: wire
31, 32': electrician 32: support plate
33: cover 35: cashier
36: clip plate 37: inward brush clip for brush

Claims (6)

a main body installed rotatably on the top of the tower;
a front wing installed in front of the main body;
a rear wing installed at the rear of the main body and rotated in the opposite direction to the front wing;
a bi-leaf steering wheel installed on the main body;
a generator installed on the main body to generate power with rotational force transmitted through the front and rear wings;
a main shaft connected to the rotary shaft of the generator by a coupler;
a driving bevel gear integrally mounted on the inner ends of the blade shafts of the front and rear blades and rotated by the rotational force of the front and rear blades;
a driven bevel gear mounted on the main shaft and rotated to operate a generator in conjunction with the driving bevel gear;
an outer protection tube erected vertically on the top of the tower to protect the components below the lower plate of the main body;
a support pipe attached to surround the main shaft in the lower plate of the main body;
a shaft protection pipe covered on the lower half of the main shaft and fixed to the inner end of the support pipe;
a bearing installed between the outer protective tube and the supporting tube;
a relay ring connected to the generator by a wire to relay electricity produced by the generator;
and a brush that receives electricity from the relay ring and sends it to a storage battery connected to an electric wire.
The method of claim 1,
The front blade is a twin-wing type wind power generator, characterized in that it is installed at 2 ~ 4 ° with respect to the vertical vertical line.
The method of claim 1,
The electric wire is introduced into a wire hole formed on the lower plate of the main body to be connected to the relay ring.
The method of claim 1,
A twin-wing type wind power generator, characterized in that a detachable clip plate with an inward brush clip for brushes is installed in the outlet for brushes formed at the place where the brushes will be located in the outer protective tube.
The method of claim 1,
The main shaft is a twin-wing type wind power generator, characterized in that it is decelerated and braked by a braking device.
The method of claim 1,
A twin-wing type wind power generator, characterized in that the generator is covered with a cover to protect it.

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