KR101335336B1 - Horizontal axis tidal current power turbine, manufacturing method of same and tidal current power method in using same - Google Patents

Abstract

The present invention relates to a horizontal axis tidal power turbine, a manufacturing method thereof, and a tidal power generation method using the same. The problem to be solved is that the inner blade operates at a low flow rate under a certain intensity, and the inner blade and the outer blade at a high flow rate over a certain intensity. The present invention provides a horizontal axis tidal power turbine that can operate at the same time to produce power, a manufacturing method thereof, and a tidal power generation method using the same.
To this end, the horizontal axis tidal current turbine according to the present invention includes a central member, a plurality of inner blades radially installed around the center member, and a first case installed at one end of the inner blade to cover the inner blade; A second case installed at the other end of the inner blade to cover the inner blade, and a plurality of first outer blades and the second case installed on the outer circumferential surface of the first case toward the inner blade to rotate at an angle; It is characterized in that it comprises a plurality of second outer blades installed on the outer circumferential surface toward the inner blade rotated by a predetermined angle.

Description

Horizontal axis tidal current power turbine, manufacturing method of same and tidal current power method in using same

The present invention relates to a horizontal axis tidal power generation turbine, a manufacturing method thereof, and a tidal power generation method using the same, and a horizontal axis tidal current turbine, in which the rotation axis of the turbine is in the direction of tidal current, a manufacturing method thereof, and a tidal current generating method using the same.

Algae power generation is a power generation method that obtains electricity by turning a turbine using kinetic energy of an algae underwater, and has a configuration similar to that of wind power generation.

Specifically, the tidal current generator, which is installed by using a tidal wave generator in a place where the tidal velocity is high, uses algae, which is the kinetic energy of seawater, is mostly fixed to a single column on the seabed and fixed with a generator installed at the top of the seawater. It is being developed by the flow. That is, the rotor provided on one side of the generator is generated while rotating by the tidal current, the flow of sea water.

7 is an installation state diagram of an active direct current control multi-array horizontal axis tidal current generator according to the prior art, Figure 8 is a block diagram of a variable rotation variable turbine using a multi-stage variable variable according to the prior art.

For example, the active direct current control multi-array horizontal axis tidal current generator introduced in Korea Patent Application No. 10-2008-0126078, as shown in Figure 7, the support 10 is fixed to the bottom of the sea, and the support At least one is installed in the generator and the power generation unit 20 is provided with a power generator assembly for generating the rotor and the rotor is rotated by a bird in the state rotatably installed in the submerged body and the underwater container of the cylindrical shape Including a rotary connector 30 rotatably installed on the support, the power generation unit 20 is rotated according to the direction of the tidal current to maintain the inflow angle of the fluid to the rotor at a right angle to maintain the power generation efficiency regardless of the direction Can be.

In addition, the counter-rotating variable turbine introduced in the Republic of Korea Patent Application No. 10-2008-0066311 in the direction opposite to each other in response to the bi-directional tidal current of the high tide (T +) and low tide (T-), as shown in FIG. Two variable turbines 101 and 102, each of which has a variable inclination of the blade, are installed to rotate, and the horizontal drive shaft X1 of the variable turbine 101 that rotates in a clockwise direction is rotated in a counterclockwise direction. The horizontal drive shaft (X2) and the vertical drive shaft (Y) for transmitting power are engaged by three bevel gears (G1, G2, G3) built in the hub 103 to use both directions of tidal current and ebb tide At the same time, the variable rotor rotating in the opposite direction can generate energy by recycling the force of the resistance vortex as an energy source.

However, the present invention can only produce power by operating only at a point where the tidal current moves at a high speed over a certain intensity, and the operation is not performed smoothly at a point where the tidal current moves at a lower speed below a certain intensity, thereby producing power. There is no problem. Therefore, there is a need for a tidal power turbine that can easily generate power at low flow rates and produce more power as the flow rate increases.

The present invention has been invented to solve the above problems, a horizontal axis in which the inner blade operates at a low flow rate less than a certain intensity, and the inner blade and the outer blade simultaneously operate at a high flow rate above a certain intensity to produce power An object of the present invention is to provide a tidal power turbine, a method of manufacturing the same, and a tidal power generation method using the same.

In order to achieve the object as described above, the horizontal axis tidal current turbine according to the present invention is a central member, a plurality of inner blades radially installed around the center member, and installed on one end of the inner blade to the inner blade A first case to cover, a second case installed at the other end of the inner blade to cover the inner blade, and a plurality of first outer blades installed on the outer circumferential surface of the first case toward the inner blade to rotate at an angle; And a plurality of second outer blades installed on the outer circumferential surface of the second case toward the inner blade and rotating at a predetermined angle.

In addition, the inner blade may be made spiral.

In addition, the first case and the second case may be formed in a hollow cylindrical shape.

The apparatus may further include a plurality of flat plate coupling the central member and the inner blade, wherein the flat plate may have one end coupled to the center member and the other end coupled to the inner plate.

The apparatus may further include a plurality of first bent plate coupling the inner blade and the first case, wherein the first bent plate may have one end coupled to the inner blade and the other end coupled to the first case. have.

The apparatus may further include a plurality of second bent plate coupling the inner blade and the second case, and the second bent plate may have one end coupled to the inner blade and the other end coupled to the second case. have.

The apparatus may further include a plurality of first hinge members for coupling the first case and the first outer blade, wherein the first hinge member has one end coupled to the first case and the other end coupled to the first outer blade. Can be.

The apparatus may further include a plurality of second hinge members for coupling the second case and the second outer blade, the second hinge member having one end coupled to the second case and the other end coupled to the second outer blade. Can be.

In addition, the first outer blade and the second outer blade may be rotated in opposite directions within a range of 0 to 90 °.

In addition, the manufacturing method of the horizontal axis tidal current turbine according to the present invention includes an inner blade installation step of radially installing a plurality of spiral inner blades around a center member, and to cover the inner blade on one end and the other end of the inner blade respectively; A case installation step of installing the first cylindrical case and the second case having a hollow cylindrical shape, and an external blade installation step of installing a plurality of external blades rotated by a predetermined angle on the outer circumferential surfaces of the first case and the second case, respectively. It is done.

In addition, the tidal power generation method using a horizontal tidal current turbine according to the present invention is an underwater installation step of installing the horizontal tidal current turbine according to the present invention, and when the flow rate of tidal flow is less than a certain intensity, a plurality of internal blades from the tidal current Receiving lift and transmitting torque to the center member And an inner blade torque transmission step of rotating the center member and an electricity generation step of generating electricity by operating a generator connected to the center member by rotation of the center member.

In addition, after the inner blade torque transfer step, when the flow velocity of the tidal flow is greater than or equal to a certain intensity, the plurality of first outer blades or the second outer blades receive lift force from the tidal flow by an angle by a centrifugal force to the central member. The method may further include an external blade torque transmission step of additionally transmitting torque to increase the rotational speed of the central member.

In addition, in the external blade torque transfer step, when the current moves from the second case to the first case, the second outer blade installed in the second case maintains a folded state and is installed in the first case. The first outer blade rotates to maintain an unfolded status, and when the tidal flow moves from the first case to the second case, the first outer blade maintains a folded status and the second The outer blade can rotate to maintain an unfolded status.

As described above, according to the horizontal axis tidal power generation turbine according to the present invention, a manufacturing method thereof, and a tidal current generation method using the same, an inner blade operates at a low flow rate of less than a certain intensity to produce electric power. The inner blade and the outer blade work simultaneously to produce more power.

In addition, according to the present invention, the outer blade that is deployed in the movement direction of the bird operates in an unfolded state, and the outer blade that is deployed in the opposite direction to the movement direction of the bird is maintained in a folded state does not operate It has the effect of generating power without disturbing the movement.

In addition, according to the present invention, since only the hub portion provided in the conventional horizontal shaft tidal power turbine can be replaced and mounted, the use thereof is easy.

1 is a perspective view of a horizontal axis tidal current turbine according to the present invention.
2A is a left side view of a horizontal axis tidal power turbine according to the present invention;
2b is a right side view of a horizontal axis tidal power turbine according to the present invention;
3 is a block diagram of a manufacturing method of a horizontal axis tidal current turbine according to the present invention.
4 is a first block diagram of a tidal current generating method using a horizontal axis tidal current turbine according to the present invention.
5 is a second block diagram of a tidal current generating method using a horizontal axis tidal current turbine according to the present invention.
6a and 6b show the principle of operation of a horizontal axis tidal power turbine according to the invention.
Figure 7 is an installation state of the active direct flow control multi-array horizontal axis tidal current generator according to the prior art.
Figure 8 is a block diagram of a vertical rotation variable turbine using a multi-stage variable variable according to the prior art.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that the same components or parts among the drawings denote the same reference numerals whenever possible. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as not to obscure the subject matter of the present invention.

1 is a perspective view of a horizontal axis tidal power generation turbine according to the present invention, Figure 2a is a left side view of the horizontal axis tidal power generation turbine according to the present invention, Figure 2b is a right side view of the horizontal axis tidal power generation turbine according to the present invention.

As illustrated in FIG. 1, the horizontal axis tidal current turbine according to the present invention includes a center member 100, a plurality of inner blades 200, a first case 300, a second case 400, and a plurality of turbines. First outer blade 500 and a plurality of second outer blades 600.

The center member 100 may have a cylindrical shape and may be connected to a generator that generates electricity.

Specifically, the center member 100 acts as a rotation axis of the inner blade 200 and the outer blades 500 and 600 which will be described later, and the generator connected to the center member 100 is operated by the rotation of the center member 100. It can generate electricity.

The inner blade 200 may be radially installed around the center member 100.

Specifically, the inner blade 200 may be formed in a spiral bent up and down along the longitudinal direction, in accordance with the present invention, these three inner blades 200 are installed radially around the center member 100 This allows the formation of triple spiral turbines. Here, the inner blade 200 can be designed to be changed to have a different number depending on the environment in which the flow of birds.

Meanwhile, as illustrated in FIG. 2A, a plurality of flat plate 700 may be included to couple the central member 100 and the inner blade 200 to each other.

Specifically, one end of the flat plate 700 may be coupled to the central member 100, and the other end may be coupled to the inner plate 200. The plate 700 and the center member 100 may be coupled to each other, and the flat plate 700 may be coupled to the inner plate 200 using bolts and nuts.

The first case 300 may be installed at one end of the inner blade 200 to cover the inner blade 200.

Specifically, the first case 300 may be formed in a hollow cylindrical shape, and may include the one end of the inner blade 200 in a hollow formed therein to support the inner blade 200 from the outside.

Meanwhile, a plurality of first bent plate 810 may be included to couple the inner blade 200 and the first case 300 to each other.

Specifically, one end of the first bent plate 810 is coupled to the inner blade 200, the other end may be coupled to the first case 300, the coupling member, for example, bolts and nuts One end of the first bent plate 810 and the inner blade 200 may be coupled to each other, and the other end of the first bent plate 810 and the first case 300 may be coupled to each other.

The second case 400 may be installed at the other end of the inner blade 200 to cover the inner blade 200.

Specifically, the second case 400 is formed in the same hollow cylindrical shape as the first case 300, the inner blade 200 by including the other end of the inner blade 200 in the hollow formed therein ) Can be supported from the outside.

Meanwhile, as shown in FIG. 2B, a plurality of second bent plate 820 may be included to couple the inner blade 200 and the second case 400 to each other.

Specifically, one end of the second bent plate 820 may be coupled to the inner blade 200, and the other end of the second bent plate 820 may be coupled to the second case 400. One end of the second bent plate 820 and the inner blade 200 may be coupled to each other, and the other end of the second bent plate 820 and the second case 400 may be coupled to each other.

The first outer blade 500 may be installed toward the inner blade on the outer circumferential surface of the first case 300 to rotate at an angle.

Specifically, the first outer blade 500 may be formed in a flat form without bending up and down along the longitudinal direction, according to the present invention, these four first outer blade 500 is the first case 300 By being spaced apart a predetermined interval on the outer circumferential surface of the) may be provided with a plurality of outer blades outside the inner blade (200). Here, the first outer blade 500 may be designed to be changed to have a different number depending on the environment in which the current flows in the same manner as the inner blade 200 described above.

On the other hand, the first outer blade 500 may be rotated at an angle on the outer peripheral surface of the first case 300, which is a plurality of first coupling the first case 300 and the first outer blade 500 It is possible by one hinge member (910).

Specifically, one end of the first hinge member 910 may be coupled to the first case 300, and the other end of the first hinge member 910 may be coupled to the first outer blade 500. One end of the first hinge member 910 and the first case 300 may be coupled to each other, and the other end of the first hinge member 910 and the first outer blade 500 may be coupled to each other.

Here, the first outer blade 500 may rotate within a range of 0 to 90 ° in a direction opposite to the second outer blade 600 to be described later. Specifically, an end of the first outer blade 500 may be It is installed to face in the direction in which the second case 400 is located, for example, when the bird moves from the second case 400 to the first case 300 by a predetermined intensity or more, the first outer blade 500 may rotate within a range of 0 to 90 ° in the vertical direction of the center member 100.

The second outer blade 600 may be installed toward the inner blade on the outer circumferential surface of the second case and rotate at a predetermined angle.

Specifically, the second outer blade 600 may be formed in a flat form without bending up and down along the longitudinal direction in the same manner as the first outer blade 500, according to the present invention, these four second outer Since the blade 600 is installed on the outer circumferential surface of the second case 400 at a predetermined interval, a plurality of outer blades may be provided outside the inner blade 200 together with the first outer blade 500. Here, the second outer blade 600 may be designed to be changed to have a variety of numbers depending on the environment in which the current flows in the same manner as the inner blade 200 and the first outer blade 500 described above. .

On the other hand, the second outer blade 600 may be rotated at an angle on the outer peripheral surface of the second case 400, which is a plurality of agents for coupling the second case 400 and the second outer blade 600 2 is possible by the hinge member 920.

Specifically, one end of the second hinge member 920 may be coupled to the second case 400, and the other end of the second hinge member 920 may be coupled to the second outer blade 600. One end of the second hinge member 920 and the second case 400 may be coupled to each other, and the other end of the second hinge member 920 may be coupled to the second outer blade 600.

Here, the second outer blade 600 may rotate within the range of 0 to 90 ° in the opposite direction to the first outer blade 500 described above. Specifically, the end of the second outer blade 600 The second case is installed so as to face in the direction in which the first case 300 is located, and, for example, when the algae moves from the first case 300 to the second case 400 by a predetermined intensity or more. 600 may rotate within a range of 0 to 90 ° in the vertical direction of the center member 100.

Hereinafter, a method for manufacturing a horizontal axis tidal current turbine according to the present invention will be described in detail.

3 is a block diagram of a manufacturing method of a horizontal axis tidal current turbine according to the present invention.

As shown in FIG. 3, the horizontal shaft tidal current turbine manufacturing method includes an inner blade installation step S10, a case installation step S20, and an outer blade installation step S30.

The inner blade installation step (S10) is a step of radially installing a plurality of spiral inner blades 200 with respect to the center member 100, as shown in Figure 2a and 2b.

Specifically, in the inner blade installation step (S10) it is possible to combine the central member 100 and the spiral inner blade 200 using a plurality of flat plate 700, for example, the spiral inner blade ( The flat plate 700 and the center member 100 are coupled to each other at both ends of the plate 200 using screws, and the flat plate 700 and the inner plate 200 are coupled to each other using bolts and nuts. Can be.

The case installation step (S20) is a step of installing the first case 300 and the second case 400 of the hollow cylindrical shape to cover the inner blade 200 on one end and the other end of the inner blade 200, respectively. to be.

Specifically, in the case installation step (S20) by combining the inner blade 200 and the first case 300 by using a plurality of first bent plate 810, a plurality of second bent plate 820 The inner blade 200 and the second case 400 may be coupled to each other using, for example, one end and the other end of the first bent plate 810 using bolts and nuts, respectively. 200 and the first case 300 may be coupled to the inner blade 200 and the first case 300, and one end and the other end of the second bent plate 820 may be the inner blade 200, respectively. ) And the second case 400 may be coupled to the inner blade 200 and the second case 400.

The external blade installation step (S30) is a step of installing a plurality of external blades rotated by a predetermined angle on the outer peripheral surface of the first case and the second case.

Specifically, in the external blade installation step (S30), the first case 300 and the first outer blade 500 are coupled using a plurality of first hinge members 910, and a plurality of second hinge members ( 920 may be used to couple the second case 300 and the second outer blade 500. For example, one end and the other end of the first hinge member 910 may be formed by using bolts and nuts. The first case 300 and the first outer blade 500 may be coupled to the first case 300 and the first outer blade 500, and one end and the other end of the second hinge member 920 may be coupled to the first case 300 and the first outer blade 500. The second case 400 and the second outer blade 600 may be coupled to the second case 400 and the second outer blade 600, respectively.

On the other hand, in the outer blade installation step (S30) it is preferable that the first outer blade 500 and the second outer blade 600 is installed so as to rotate within the range of 0 to 90 ° in the opposite direction to each other, specifically The end of the first outer blade 500 is installed to face in the direction in which the second case 400 is located, the end of the second outer blade 600 in the direction in which the first case 500 is located. The outer blade of any one of the first outer blade 500 and the second outer blade 600 rotates in the vertical direction of the center member 100 in accordance with the moving direction of the bird installed to move toward a predetermined intensity or more. It is desirable to maintain the unfolded status.

Hereinafter, a tidal current generation method using a horizontal axis tidal current turbine according to the present invention will be described in detail.

4 is a first block diagram of a tidal current generating method using a horizontal axis tidal current turbine according to the present invention.

As illustrated in FIG. 4, the tidal current generating method using the horizontal axis tidal current turbine according to the present invention includes an underwater installation step S100, an internal blade torque transmission step S200, and an electricity generation step S300.

The underwater installation step (S100) is a step of installing the horizontal axis tidal current turbine according to the present invention in the water.

Specifically, the underwater installation step (S100) is a horizontal axis tidal current according to the present invention having an inner blade 200 and an outer blade (500, 600), as shown in Figure 1 to produce electricity using the tidal power turbine It is a step of installing the power turbine 1 in water.

In the internal blade torque transmission step (S200), when the flow velocity of the tidal current is less than a certain intensity, the plurality of inner blades 200 receives the lift force from the tidal current and transfers torque to the central member 100 to transfer the central member 100. This step is to rotate.

Specifically, in the internal blade torque transmission step (S200), when the tidal flow has a low flow rate less than a certain intensity, the outer blades (500, 600) provided in the horizontal shaft tidal power generation turbine (1) maintains a folded state (folded status) While the inner blade 200 receives lift from the tidal current, the inner blade 200 may rotate to transmit the torque to the central member 100. Therefore, according to the present invention, power generation can be easily started even at a low flow rate at which algal flow rate is less than a certain intensity.

The electricity generation step (S300) is a step of generating electricity by operating a generator connected to the center member 100 by the rotation of the center member 100.

5 is a second block diagram of a tidal current generating method using a horizontal axis tidal current turbine according to the present invention.

Meanwhile, the tidal current generation method using the horizontal shaft tidal power generation turbine according to the present invention may further include an outer blade torque transfer step S250 after the inner blade torque transfer step S200 as shown in FIG. 5. .

In the external blade torque transmission step (S250), when the flow velocity of the tidal flow is greater than or equal to a certain intensity, the plurality of first outer blades 500 or the second outer blades 600 rotate by a predetermined angle by centrifugal force to lift lift force from the tidal current. It is a step of increasing the rotational speed of the center member 100 by additionally transmitting torque to the center member 100.

Specifically, in the external blade torque transmission step (S250), when the tidal current has a high flow rate of a certain intensity or more, only one of the first outer blade 500 and the second outer blade 600 according to the direction of movement of the tidal current. The rotational speed of the central member 100 can be increased by maintaining an unfolded status by rotating the centrifugal force at an angle, thereby additionally transferring torque to the central member 100 by receiving lift from the current. have. Therefore, according to the present invention, more power can be produced at a high flow rate at which the flow rate of the algae is higher than a certain intensity.

6a and 6b are views showing the operating principle of the horizontal axis tidal power turbine according to the present invention.

According to the present invention, only one of the first outer blade 500 and the second outer blade 600 can be rotated by a centrifugal force in accordance with the direction of movement of the tides, for example, as shown in FIG. 6A. As described above, when the bird moves from the second case 400 to the first case 300, the second outer blade 600 installed in the second case 400 maintains a folded state. The first outer blade 500 installed in the first case 300 may rotate in the vertical direction of the center member 100 to maintain an unfolded status without disturbing the movement of the tidal current.

On the other hand, as shown in Figure 6b, when the bird moves from the first case 300 to the second case 400, the first outer blade 500 in the same principle folded state (folded status) The second outer blade 600 may maintain the unfolded status by rotating in the vertical direction of the center member 100 without hindering the movement of the tidal stream by maintaining.

It is installed so that the end of the first outer blade 500 faces the direction in which the second case 400 is located, the end of the second outer blade 600 in the direction in which the first case 500 is located Is installed so as to face, because the first outer blade 500 and the second outer blade 600 can each rotate within the range of 0 to 90 ° in the vertical direction of the center member 100.

As described above, according to the present invention, the inner blade is operated at a low flow rate of less than a certain intensity, and the inner blade and the outer blade can be operated simultaneously at a high flow rate of a certain intensity or more to produce power, depending on the direction of movement of the tidal current The outer blades can be kept unfolded and folded, respectively, to produce power without disturbing the movement of the tides, and the present invention can be installed by replacing only the hub portion provided in a conventional horizontal shaft tidal power turbine. It is easy.

As described above with reference to the drawings illustrating a horizontal axis tidal power generation turbine according to the present invention, a manufacturing method thereof and a tidal power generation method using the same, the present invention is not limited by the embodiments and drawings disclosed herein, Of course, various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention.

1: Horizontal Tidal Power Turbine
100: center member 200: inner blade
300: first case 400: second case
500: first outer blade 600: second outer blade
700: flat plate 810: first bent plate
820: second bending plate 910: first hinge member
910: second hinge member
S10: Internal Blade Installation Steps
S20: Case Installation Steps
S30: External Blade Installation Steps
S100: Underwater Installation Steps
S200: Internal blade torque transfer step
S250: External blade torque transfer step
S300: Electricity Generation Step

Claims (13)

A center member;
A plurality of inner blades radially installed around the center member;
A first case installed at one end of the inner blade to cover the inner blade;
A second case installed at the other end of the inner blade to cover the inner blade;
A plurality of first outer blades installed on the outer circumferential surface of the first case toward the inner blade and rotating at an angle; And
And a plurality of second outer blades installed on the outer circumferential surface of the second case toward the inner blade and rotating at a predetermined angle.
Further comprising a plurality of flat plate for coupling the central member and the inner blade,
One end of the flat plate is coupled to the central member, and the other end is coupled to the inner plate of the horizontal axis tidal power turbine.
The method of claim 1,
Wherein said inner blade is helical.
In the first aspect,
The first case and the second case of the horizontal axis tidal current turbine, characterized in that the hollow cylindrical shape.
delete The method of claim 1,
Further comprising a plurality of first bent plate for coupling the inner blade and the first case,
One end of the first bent plate is coupled to the inner blade, and the other end is coupled to the first casing horizontal shaft power generation turbine, characterized in that.
The method of claim 1,
Further comprising a plurality of second bent plate for coupling the inner blade and the second case,
One end of the second bent plate is coupled to the inner blade, and the other end is coupled to the second casing horizontal shaft power generation turbine.
The method of claim 1,
Further comprising a plurality of first hinge members for coupling the first case and the first outer blade,
One end of the first hinge member is coupled to the first casing, and the other end is coupled to the first outer blade.
The method of claim 1,
Further comprising a plurality of second hinge members for coupling the second case and the second outer blade,
One end of the second hinge member is coupled to the second case, and the other end is coupled to the second outer blade.
9. The method according to claim 7 or 8,
And the first outer blade and the second outer blade rotate in opposite directions within a range of 0 to 90 degrees.
delete Underwater installation step of installing the horizontal axis tidal current turbine according to claim 1 in water;
An inner blade torque transmission step of rotating the central member by transmitting a torque to a central member when a plurality of inner blades receive lift force from the current when the flow velocity of the tidal current is less than a predetermined intensity; And
An electricity generation step of generating electricity by operating a generator connected to the center member by rotation of the center member;
After the inner blade torque transfer step,
When the flow velocity of the tidal flow is greater than or equal to a certain intensity, the plurality of first outer blades or the second outer blades receive a lift force from the tidal current while rotating at a predetermined angle by centrifugal force and additionally transmit torque to the central member to rotate the speed of the central member. An algae power generation method using a horizontal shaft algae turbine, characterized in that it further comprises;
delete 12. The method of claim 11,
In the external blade torque transfer step,
When the bird moves from the second case to the first case, the second outer blade installed in the second case maintains the folded state and the first outer blade installed in the first case rotates and unfolds. keep the unfolded status,
When the tidal stream moves from the first case to the second case, the first outer blade maintains a folded status and the second outer blade rotates to maintain an unfolded status. Algae generating method using horizontal axis algae turbine.

Images