KR20120041030A - Apparatus for generating power using the flow of water having self-buoyancy force - Google Patents

Abstract

PURPOSE: A water-current generating apparatus with self-buoyancy is provided to reduce the size of the apparatus by being equipped with a buoyancy module and eliminating a separate buoyancy vessel. CONSTITUTION: A water-current generating apparatus with self-buoyancy includes a main body(11), a buoyancy module(13), rotary wings(17), a generating module(15), a fixed unit(19), a wiring connecting part(25), and a height adjusting unit(20). The main body includes a rotor fixing shaft which is installed along a central shaft. The buoyancy module is arranged at the main body to secure self-buoyancy of the main body. The rotary wings rotate the same direction as fluid flow by being formed along the external side of the main body. The generating module is formed at the main body and rotates based on the rotation of the rotary wings. The fixed unit is supported by a floating structure or an onshore structure. The wiring connecting part connects the fixed unit and the rotor fixed shaft and transfers power to the external side of the main body. The height adjusting unit rotatably mounted at the fixed unit and is in connection with the wiring connecting part. The position of the main body is positioned on the surface of water by the height adjusting unit.

Description

Apparatus for generating power using the flow of water having self-buoyancy force}

The present invention relates to a water flow generator, and more particularly, to a water flow generator having its own buoyancy capable of producing electric power by rotating a rotary blade from the flow of water in the state of floating on the water surface.

In general, power is generated from thermal power generation that rotates a turbine with heat generated by heat, hydroelectric power using potential energy of water stored in a dam, and nuclear power generation using nuclear fission.

However, since thermal power generation uses fossil fuels such as petroleum or coal as an energy source, there is a limit to the reserve of fossil fuels and contaminates the environment in the process of mining fossil fuels. Nuclear power generation uses the heat generated during nuclear fission such as uranium as an energy source, which has the advantage of having a large power generation capacity.However, there are problems such as safety due to the use of nuclear fuel and environmental pollution due to nuclear waste and pollutants generated during power generation. Has On the other hand, hydroelectric power generation costs a lot of initial costs and maintenance costs for dams and beams, and has a problem in that it affects the ecosystem because it artificially disconnects the flow of water.

Therefore, in order to solve this problem, power generation facilities using clean energy have been studied. Such power generation using clean energy includes solar power generation, wind power generation, tidal power generation, geothermal power generation and tidal power generation. Among these clean energy power generation facilities, tidal power generation generates electricity by installing turbines where water flows fast.

The technique for the algae power generation is disclosed in the following Patent Document 1 filed and published by Renetech Co., Ltd. The patent document 1 is a power generation system including a small generator having a tower movable up and down, a propeller-type aberration installed at the bottom of the tower, a plurality of propellers installed in the aberration, a low speed shaft for transmitting power, a planetary gear, a high speed shaft, and a turbine. Initiate.

On the other hand, Patent Document 2 disclosed and published by Hyundai Heavy Industries Co., Ltd. is a drive shaft installed in the horizontal direction by a support in the lower portion of the floating or fixed structure, impeller-type aberration installed on one side of the drive shaft, the other side of the drive shaft The first bevel gear is installed, the second bevel gear engaging with the first bevel gear is provided in the lower portion of the driven shaft installed in the structure, the first bevel gear and the second bevel gear gear box provided therein and the driven shaft Disclosed is a tidal current power generation device composed of a speed increaser and a generator connected to an upper portion and configured to transmit and generate rotational force of a water wheel rotated by a flow of tidal current to a generator.

However, since the power generation apparatus disclosed in Patent Documents 1 and 2 does not have its own buoyancy, it requires a separate buoyancy line and thus has a problem in that the size of the system cannot be adjusted. In addition, since the power generation system generates electric power by propeller-type aberration in water, when the aberration is contaminated by suspended matter or aquatic plants in the water, there is also a problem in that power generation efficiency is lowered.

1. Korean Patent Publication No. 2004-0033199 (published Apr. 21, 2004) 2. Korean Patent Publication No. 2004-0033160 (published Apr. 21, 2004)

An object of the present invention is to solve the problems as described above, by adopting a power generation device having a buoyancy module can remove the separate buoyancy lines conventionally adopted to reduce the size of the power generation device itself buoyancy It is to provide a water flow generator having a.

In addition, an object of the present invention is to provide a water flow generating device having its own buoyancy that can immediately remove the foreign matter caught in the rotary blades to produce power in the state of floating on the water surface to improve the power generation efficiency.

In order to achieve the above object, the water flow generator according to the embodiment of the present invention includes a main body having a rotor fixed shaft installed along a central axis, a buoyancy module provided in the main body so that the main body has its own buoyancy, and formed along an outer surface of the main body. And a power generation module formed in the main body to rotate in response to the rotation of the rotary blades and the rotary blades to rotate in the same direction as the flow of the fluid.

In addition, according to the water flow generator according to an embodiment of the present invention, the wire connecting portion for connecting the fixing means, the fixing means and the rotor fixed shaft supported by the marine or land structure, and transmits the generated power to the outside of the main body And a height adjusting device rotatably mounted to the fixing means, the height adjusting device being connected to the wire connection part, wherein the height adjusting device rotates in response to a change in height of the water surface.

In addition, according to the water flow generator according to an embodiment of the present invention, a plurality of buoyancy modules are located in the body, characterized in that at least one power generation module is located between each of the plurality of buoyancy modules.

In addition, according to the water flow generator according to an embodiment of the present invention, the power generation module is characterized in that it comprises a stator positioned so that the rotor fixed shaft penetrates and a rotor that rotates around the stator as the rotary blades rotate. do.

In addition, according to the water flow generator according to an embodiment of the present invention, the buoyancy module is located inside the main body so as to surround the rotor fixed shaft, the power generation module to rotate around the buoyancy module as the rotary blades rotate. Characterized in that located.

In addition, according to the water flow generator according to an embodiment of the present invention, the buoyancy module includes a stator located inside the buoyancy module so that the rotor fixing shaft passes, the power generation module is the power generation module adjacent to the stator It is characterized in that it further comprises a rotor for rotating around the stator in accordance with the rotation of the power generation module by being located inside.

As described above, according to the water-flow generator having its own buoyancy according to the present invention, by adopting the generator having a buoyancy module, it is possible to remove the additional buoyancy line, the effect of reducing the size of the generator is obtained. .

In addition, according to the water flow generator having its own buoyancy according to the present invention, since the power is produced in the state of floating on the water, compared to the generator installed in the water can immediately remove the foreign matter caught in the rotary blades can improve the power generation efficiency There is also an effect.

1 is a view schematically showing a water flow generator having its own buoyancy according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along a cutting line A-A 'of FIG. 1.
3 is a view schematically illustrating a water flow generator having its own buoyancy according to a second embodiment of the present invention.
4 is a cross-sectional view taken along the line BB ′ of FIG. 3 and shown in cross section.
5 is a diagram illustrating an application example of a water flow generator having its own buoyancy according to embodiments of the present invention.

These and other objects and novel features of the present invention will become more apparent from the description of the present specification and the accompanying drawings.

Hereinafter, a water flow generator having its own buoyancy according to embodiments of the present invention will be described in detail with reference to FIGS. 1 to 5. 1 is a view schematically showing a water flow generator having its own buoyancy according to a first embodiment of the present invention, Figure 2 is a cross-sectional view showing a cross-sectional view taken along the cutting line A-A 'of FIG. . 3 is a view schematically showing a water flow generator having its own buoyancy according to a second embodiment of the present invention, Figure 4 is a cross-sectional view taken along the cutting line B-B 'of FIG. . 5 is a diagram illustrating an application example of a water flow generator having its own buoyancy according to embodiments of the present invention.

1 and 2, the water flow generator 100 according to the first embodiment of the present invention includes a main body 11, a buoyancy module 13, a power generation module 15, and a longitudinal direction of the main body 11. It is formed along the rotating blade 17 which rotates in the same direction as the flow of the fluid. The generator 100 is preferably installed in a place where the flow rate (F) is high, such as a river or the sea. Thus, the power generation device 100 may generate power by using kinetic energy generated from the flow of the fluid.

The power generation device 100 may be connected to the fixing means 19 installed between the pier 21 to produce power in a state located on the surface of the water. The fixing means () may be fixedly installed on the pier 21 as well as other offshore structures or land structures. The power generation device 100 may be located on the water surface by the wire connection portion 25 connected to the fixing means 19 on the outside of the main body 11. In addition, the power generation device 100 has a height adjusting means 20 for coupling the fixing means 19 and the wire connection portion 25. The height adjusting means 20 is installed to be rotatable in the fixing means (19). The height adjusting means 20 is preferably mounted to rotate within the range of 1 degree to 180 degrees according to the height change of the water surface, for example, swell or wave. Therefore, the generator 100 may produce power at a predetermined position with respect to the water surface even if the height of the water surface is changed. In the first embodiment of the present invention, the power generator 100 is described as being installed between the pier 21, but is not limited to this is fixed to the water surface using an anchor or fixed using other devices apparent to those skilled in the art May be

The main body 11 is preferably manufactured in a cylindrical shape so as to be stably positioned on the surface of the river or the sea. The main body 11 includes a rotor fixing shaft 23 installed along the longitudinal center of the cylinder. The rotor fixing shaft 23 is connected to the wire connection portion 25 located outside the main body 11. The wire connection unit 25 serves to output the power generated from the power generator 100 to the outside.

The buoyancy module 13 is preferably provided in the main body 11 so that the main body 11 has its own buoyancy. In the first embodiment of the present invention, the buoyancy module 13 is preferably provided with two or more spaced apart from each other in the main body (11). The buoyancy module 13 may be formed as an empty space in the main body 11 or manufactured using a material having a large buoyancy force. Therefore, since the power generator 100 includes the buoyancy module 13, the power generator 100 does not use a buoyancy line, thereby reducing the size and manufacturing cost of the power generator 100. In addition, since the power generator 100 produces power in the state of floating on the water surface, it is possible to immediately remove foreign substances caught on the rotary blades compared to the power generator installed in the water, thereby improving power generation efficiency.

At least one power generation module 15 is preferably located between each buoyancy module 13. The power generation module 15 has a stator 27 and a rotor 29. The stator 27 is formed of a coil or the like and is preferably positioned so that the rotor fixing shaft 23 penetrates. The rotor 29 is formed of a permanent magnet or the like, and rotates around the stator 27 as the rotary vanes 17 rotate. In this case, it is preferable that the stator 27 is mounted on the rotor fixing shaft 23 and fixed regardless of the rotational movement of the rotary blade 17.

Therefore, the generator 100 rotates the rotary blade 17 according to the flow of the fluid, the buoyancy module 13 and the power generation module 15 is the stator 27 in the same manner as the rotation of the rotary blade 17 Power can be produced by rotating about. Alternatively, the power generation device 100 may produce power by rotating only the power generation module 15 without rotating the buoyancy module 13 in response to the rotation of the rotary vanes 17.

3 and 4, the water flow generator 200 according to the second embodiment of the present invention includes a main body 11, a buoyancy module 13, a power generation module 15, and a longitudinal direction of the main body 11. It is formed along the rotating blade 17 which rotates in the same direction as the flow of the fluid. The buoyancy module 13 is located inside the main body 11 to surround the rotor fixing shaft 23. The buoyancy module 13 has a stator 27 positioned inside the buoyancy module 13 to allow the rotor fixing shaft 23 to pass therethrough.

The power generation module 15 is positioned to rotate around the buoyancy module 13 as the rotary vanes 17 rotate. The power generation module 15 includes a rotor 29 that rotates around the stator 27 as the power generation module 15 rotates by being located inside the power generation module 15 adjacent to the stator 27. Other components except for the buoyancy module 13 and the power generation module 15 are the same as in the first embodiment, and a detailed description thereof will be omitted.

Referring to FIG. 5, the water flow generators 100 and 200 of the present invention may be connected in plural to produce electric power. In this case, adjacent water flow generators 100 and 200 are connected by a joint means 31. The joint means 31 preferably comprises an elastic member 33, such as a spring. In addition, the joint means 31 connects the power generators 100 and 200 to each other through the rotation means 35 mounted on the rotor fixed shaft 23 of each of the power generators 100 and 200. The rotation means 35 rotates in response to a change in height of the water surface, for example, a swell or a wave, thereby inducing the generators 100 and 200 to always produce electric power at a position parallel to the sea surface. Accordingly, the water flow generators 100 and 200 may be operated under the optimum conditions even if the direction and height of the fluid are changed between the water flow generators 100 and 200 by the joint means 31 and the rotation means 35. Can produce power

As mentioned above, although the invention made by the present inventor was demonstrated concretely according to the said Example, this invention is not limited to the said Example and can be variously changed in the range which does not deviate from the summary.

11: body 13: buoyancy module
15: power generation module 17: rotary wing
19: fixing means 20: height adjusting means
23: rotor fixed shaft 27: stator
29: rotor 31: joint means
33: elastic member 35: rotation means
100, 200: water flow generator

Claims (6)

A main body having a rotor fixing shaft installed along a central axis;
A buoyancy module provided in the main body so that the main body has its own buoyancy;
Rotating blades formed along the outer surface of the main body to rotate in the same direction as the flow of the fluid; And
Water flow generator having its own buoyancy comprising a power generation module formed on the main body to rotate in response to the rotation of the rotary blades. The method of claim 1,
Fastening means supported by a marine or land structure;
A wire connection part connecting the fixing means and the rotor fixing shaft and transmitting the generated power to the outside of the main body; And
Is mounted to the fixing means rotatably further comprises a height adjustment device connected to the wiring connection,
The height adjusting device is a water flow generator having its own buoyancy, characterized in that to position the main body on the water surface by rotating in response to the change in the height of the water surface. The method of claim 1,
A plurality of buoyancy modules are located in the main body, and at least one power generation module has a self-buoyancy, characterized in that located between each of the plurality of buoyancy modules. The method of claim 3,
The power generation module has a self-buoyancy power generation apparatus having a stator positioned to penetrate the rotor fixing shaft and a rotor that rotates around the stator as the rotary vanes rotate. The method of claim 1,
The buoyancy module is located inside the main body so as to surround the rotor fixed shaft, the power generation module having a self-buoyancy power generation device, characterized in that positioned to rotate around the buoyancy module as the rotary blades rotate. The method of claim 5,
The buoyancy module includes a stator positioned inside the buoyancy module so that the rotor fixing shaft penetrates, and the power generation module is located inside the power generation module adjacent to the stator, thereby surrounding the stator according to the rotation of the power generation module. Water flow generating device having its own buoyancy, characterized in that it further comprises a rotor for rotating.

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