WO2023027384A1 - Wave power generator - Google Patents

Wave power generator Download PDF

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Publication number
WO2023027384A1
WO2023027384A1 PCT/KR2022/011846 KR2022011846W WO2023027384A1 WO 2023027384 A1 WO2023027384 A1 WO 2023027384A1 KR 2022011846 W KR2022011846 W KR 2022011846W WO 2023027384 A1 WO2023027384 A1 WO 2023027384A1
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WO
WIPO (PCT)
Prior art keywords
wave
power receiving
receiving body
main frame
wire
Prior art date
Application number
PCT/KR2022/011846
Other languages
French (fr)
Inventor
Ki Suk Song
Original Assignee
Ki Suk Song
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020210113009A external-priority patent/KR102353245B1/en
Priority claimed from KR1020220018878A external-priority patent/KR20230122344A/en
Application filed by Ki Suk Song filed Critical Ki Suk Song
Publication of WO2023027384A1 publication Critical patent/WO2023027384A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
    • F03B13/16—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
    • F03B13/18—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
    • F03B13/1885—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is tied to the rem
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
    • F03B13/16—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
    • F03B13/18—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
    • F03B13/1805—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem
    • F03B13/181—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for limited rotation
    • F03B13/182—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for limited rotation with a to-and-fro movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/40—Use of a multiplicity of similar components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/91—Mounting on supporting structures or systems on a stationary structure
    • F05B2240/915—Mounting on supporting structures or systems on a stationary structure which is vertically adjustable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/91—Mounting on supporting structures or systems on a stationary structure
    • F05B2240/917—Mounting on supporting structures or systems on a stationary structure attached to cables
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/10—Geometry two-dimensional
    • F05B2250/13—Geometry two-dimensional trapezial
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/20—Geometry three-dimensional
    • F05B2250/23—Geometry three-dimensional prismatic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/40—Movement of component
    • F05B2250/41—Movement of component with one degree of freedom
    • F05B2250/411—Movement of component with one degree of freedom in rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/40—Transmission of power
    • F05B2260/406—Transmission of power through hydraulic systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

Definitions

  • the present invention relates to a wave power generator, and more particularly to a wave power generator configured to support a wave-power receiving body using a plurality of support wires, thereby making it possible to easily withstand fluctuations in wave power.
  • a method of generating electricity there are various methods depending on the type of energy to be used, such as hydroelectric power generation, thermal power generation, nuclear power generation, solar thermal power generation, solar electrical power generation, wind power generation, tidal power generation, and wave power generation.
  • KR 10-1075138, KR 10-1075137, KR 10-0886837, and KR 10-2010-0096310 disclose technology in which power generation is performed using horizontal kinetic energy of wave power generated when waves come in and go out repeatedly between the sea and the land due to the ebb and flow of tide.
  • a wave-power receiving body or an enclosure box which is directly affected by wave power, and a connection rod configured to support the same are made of a rigid structure. Accordingly, when sudden and strong wave power acts on the wave-power receiving body or the enclosure box, the same may be damaged, which results in reduced durability.
  • the present invention has been made in view of the above problems, and it is an object of the present invention to provide a wave power generator configured to support a wave-power receiving body, which is directly affected by wave power, using a plurality of support wires, thereby making it possible to easily withstand fluctuations in wave power and to improve durability.
  • a wave power generator including a main frame having a box shape with an open bottom, a wave-power receiving body supported by a plurality of support wires installed at an upper portion of the main frame to enable forward and rearward pendulum movement thereof, the wave-power receiving body being affected by wave power acting thereon, a generator installed on one side of the main frame, a drive wire having one end thereof connected to a drive shaft connected to a shaft of a rotor of the generator and a remaining end thereof connected to the wave-power receiving body, a wire guide member installed in the main frame and configured to guide movement of the drive wire, and a one-way clutch installed in the drive shaft and configured to function to transmit rotation to the shaft of the rotor of the generator in only one direction.
  • the main frame may be formed in the box shape having a trapezoidal cross-section with a narrow upper surface, and may be formed by connecting a plurality of horizontal rods, a plurality of vertical rods, and a plurality of inclined rods to each other to form a frame structure.
  • a flywheel may be installed in the drive shaft to maintain stable rotation.
  • the wave-power receiving body may be formed in a box shape having an open front surface.
  • the wave-power receiving body may be formed in a box shape having a trapezoidal cross-section, and may have a partition plate installed therein to divide an inside thereof into a plurality of sections, thereby maintaining rigidity thereof and distributing hydraulic pressure acting thereon among the plurality of sections into which the wave-power receiving body is divided.
  • the respective support wires may be installed to support a front portion of the wave-power receiving body and a rear portion thereof.
  • the main frame may have a pair of wire support members rotatably installed at the upper portion thereof, the pair of wire support members being disposed at positions respectively corresponding to a front surface portion of the wave-power receiving body and a rear surface portion thereof, wherein the support wire may be fixedly installed in the wire support member, wherein an end of the support wire may be wound around the wire support member.
  • the pair of wire support members may be installed to extend long in a width direction of the wave-power receiving body, wherein the plurality of support wires installed at the front surface portion of the wave-power receiving body may be connected to one wire support member, wherein the plurality of support wires installed at the rear surface portion of the wave-power receiving body may be connected to the other wire support member.
  • the main frame may have a winding drive source installed at the upper portion thereof, the winding drive source being connected to the wire support member, wherein the support wire may be wound around the wire support member and may be unwound therefrom when the wire support member is rotated as necessary, thereby adjusting a height of the wave-power receiving body.
  • the wave-power receiving body may have a plurality of fixing wires installed along an edge of a front surface portion thereof, wherein ends of the plurality of fixing wires may be combined into one so as to be connected to the remaining end of the drive wire, thereby connecting the drive wire to the wave-power receiving body.
  • the main frame may have a plurality of leg members at lower ends thereof.
  • One of the front and rear leg members, among the plurality of leg members, may have a ski plate attached to a lower end thereof, and a remaining leg member may have an excavation piece attached to a lower end thereof.
  • the excavation piece may be formed in the shape of a shovel or a fork, and an excavation limitation wing may be formed in the excavation piece to limit the depth of digging into the ground.
  • the leg member, having the excavation piece attached thereto may be rotatably assembled with and installed in the main frame at a location thereof a predetermined distance lower than an upper end thereof.
  • the leg member, having the excavation piece attached thereto may have the upper end thereof rotatably connected to a piston of a reciprocating cylinder fixedly installed in the main frame.
  • a lift member may be installed in the main frame on a side of the leg member having the excavation piece attached thereto, wherein the lift member may adjust a height thereof.
  • the lift member may include a body fixedly installed in the main frame, a lift cylinder fixedly installed in the body, and an excavation prevention plate attached to an end of a piston of the lift cylinder.
  • the wave-power receiving body may have one side thereof in a width direction supported by and installed in the main frame so as to be rotatable in a horizontal direction, and the remaining end of the drive wire may be connected to an edge portion of the wave-power receiving body, wherein the edge portion may be opposite the one side of the wave-power receiving body, the one side being rotatably supported by the mainframe.
  • the wave power generator according to the embodiment of the present invention may further include an auxiliary wave-power receiving body.
  • the auxiliary wave-power receiving body may install a pair of pendulum rods therein, wherein each of the pair of pendulum rods may be rotatably supported at a middle point of a corresponding one of opposite sides of the main frame in the width direction, wherein lower ends of the pair of pendulum rods may be rotatably connected to respective opposite sides of the auxiliary wave-power receiving body in the width direction.
  • connection rod may be connected to a remaining end of an auxiliary drive wire, wherein the auxiliary drive wire may have one end thereof connected to the drive shaft connected to the shaft of the rotor of the generator.
  • the auxiliary wave-power receiving body may have a pair of support rods installed therein, wherein lower ends of the pair of support rods may be rotatably connected to respective opposite sides of the main frame in the width direction, wherein upper ends of the pair of support rods may be rotatably connected to respective opposite sides of the auxiliary wave-power receiving body in the width direction.
  • the main frame may have a pair of drive cylinders installed therein, wherein each of the pair of drive cylinders may have a piston rod, wherein an end of the piston rod may be rotatably connected to a corresponding one of the upper ends of the pair of support rods, wherein the drive cylinder may have a hydraulic line connected thereto so as to rotate the drive shaft connected to the shaft of the rotor of the generator.
  • the drive cylinder may have an end thereof rotatably installed in an installation rod fixedly installed in the main frame, wherein the main frame may have a driven cylinder installed on one side thereof, wherein the drive cylinder and the driven cylinder may be connected to each other by the hydraulic line, wherein the driven cylinder may have a piston rod, wherein the piston rod may be connected to one end of an auxiliary drive wire, wherein the other end of the auxiliary drive wire may be connected to the drive shaft connected to the shaft of the rotor of the generator.
  • the wave-power receiving body may be provided in a plural number, wherein the plurality of wave-power receiving bodies may be disposed with a space therebetween so as to have a predetermined phase difference between forward and rearward movement directions of a wave.
  • a wave power generator according to an embodiment of the present invention provides the following effects.
  • a wave-power receiving body is installed to perform pendulum movement using a plurality of support wires, thereby making it possible to appropriately respond to external force having large rapid fluctuations due to the action of wave power. Additionally, it is possible to reduce the occurrence of breakage or damage to a component to which wave power is applied, thereby improving durability.
  • leg members have ski plates attached thereto
  • other leg members have excavation pieces and reciprocating cylinders attached thereto
  • a lift member is installed in a main frame, thereby making it possible to easily move the installation position of the wave power generator as necessary. Further, in response to a typhoon or storm, it is possible to easily move from the sea to an evacuation site on land without using a lot of labor.
  • the length of the support wire is easily adjusted by using a winding drive source and a wire support member, thereby making it possible to keep the wave power acting on the wave-power receiving body approximately constant without a significant difference in response to changes in the sea level between high tide and low tide.
  • auxiliary wave-power receiving bodies are additionally installed in different ways, thereby making it possible to implement more efficient power generation by easily responding to various changes in waves.
  • the wave-power receiving bodies are disposed and installed in a stepwise arrangement so as to have a phase difference therebetween, thereby enabling wave power from other swells to act on the wave-power receiving body having a different phase difference even during a resting period of some swells that occur due to the nature of the waves. Accordingly, it is possible to perform uninterrupted power generation.
  • FIG. 1 is a front perspective view showing a wave power generator according to a first embodiment of the present invention
  • FIG. 2 is a rear perspective view showing the wave power generator according to the first embodiment of the present invention.
  • FIG. 3 is a bottom perspective view showing the wave power generator according to the first embodiment of the present invention.
  • FIG. 4 is a perspective view showing a main configuration in which power generation is performed in the state in which a main frame or the like is removed in the wave power generator according to the first embodiment of the present invention
  • FIG. 5 is a perspective view showing the main configuration of the main frame in the wave power generator according to the first embodiment of the present invention.
  • FIG. 6 is a front perspective view showing a wave power generator according to a second embodiment of the present invention.
  • FIG. 7 is a rear perspective view showing the wave power generator according to the second embodiment of the present invention.
  • FIG. 8 is a perspective view showing a main configuration in which power generation is performed in the state in which a main frame or the like is removed in the wave power generator according to the second embodiment of the present invention
  • FIG. 9 is a front perspective view showing a wave power generator according to a third embodiment of the present invention.
  • FIG. 10 is a front perspective view showing a wave power generator according to a fourth embodiment of the present invention.
  • FIG. 11 is a front perspective view showing a wave power generator according to a fifth embodiment of the present invention.
  • FIG. 12 is a front perspective view showing a wave power generator according to a sixth embodiment of the present invention.
  • FIG. 13 is a rear perspective view showing the wave power generator according to the sixth embodiment of the present invention.
  • module means one unit configured to process a specific function or operation, which may mean hardware or software or a combination of hardware and software.
  • the present invention may be implemented in various forms, and is not limited to the embodiments described below.
  • a wave power generator includes a main frame 100, a wave-power receiving body 200, a generator 300, a drive wire 400, a wire guide member 500, and a one-way clutch 600.
  • the main frame 100 is formed in the shape of a box having an open bottom.
  • the main frame 100 is formed in the shape of a box.
  • the box shape is a trapezoidal cross-sectional shape with a narrow upper surface.
  • the main frame 100 is formed by connecting a plurality of horizontal rods 112, a plurality of vertical rods 114, and a plurality of inclined rods 116 to each other. In this manner, a frame structure is formed.
  • the plurality of horizontal rods 112 are disposed on the upper surface of the main frame 100 to form a quadrangular shape and are installed in a state of being connected to each other, and the plurality of vertical rods 114 are connected to and installed in the plurality of horizontal rods 112 vertically beneath the vertices of the plurality of horizontal rods 112 on the upper surface thereof.
  • the plurality of inclined rods 116 are connected to and installed in the plurality of horizontal rods 112 in the state in which the inclined rods 116 are inclined outwards relative to the respective vertical rods 114 at a predetermined angle from the vertices of the horizontal rods 112 on the upper surface, thereby making it possible to form the main frame 100 in the shape of a box having a trapezoidal cross-section.
  • the plurality of horizontal rods 112 the plurality of vertical rods 114, and the plurality of inclined rods 116 are installed and connected to each other in order to form a truss structure, it is possible to reliably maintain the structural strength of the main frame 100.
  • the external plane of the main frame 100 which is formed by the horizontal rod 112 and the inclined rod 116, may be blocked with a plate or the like.
  • a ski plate 124 may also be attached to the lower end of the front leg member 120.
  • the ski plate 124 may be rotatably installed at the lower end of the front leg member 120 using a hinge pin 123.
  • an excavation piece 134 may be attached to the lower end of the rear leg member 130.
  • the excavation piece 134 may be formed in the shape of a shovel or a fork.
  • An excavation limitation wing 135 may be formed in the excavation piece 134 to limit the depth of digging into the ground.
  • leg member 120 having the ski plate 124 attached thereto, may be installed at the rear, and the leg member 130, having the excavation piece 134 attached thereto, may be installed at the front.
  • the leg member 130 having the excavation piece 134 attached thereto, is rotatably assembled with and installed in the inclined rod 116 of the main frame 100 at a location thereof a predetermined distance lower than the upper end thereof. Further, the upper end of the leg member 130, having the excavation piece 134 attached thereto, is rotatably connected to a piston 142 of a reciprocating cylinder 140 fixedly installed in the main frame 100.
  • a lift member 160 that is adjustable in height may also be installed in the main frame 100 on the side of the leg member 130 having the excavation piece 134 attached thereto.
  • leg member 130 is rotatably assembled with and installed in the inclined rod 116 of the main frame 100 using a hinge pin 138.
  • the reciprocating cylinder 140 is fixedly installed in the horizontal rod 112 connected to the lower end of the vertical rod 114 of the main frame 100.
  • the end of the piston 142 of the reciprocating cylinder 140 and the upper end of the leg member 130 are rotatably connected to each other.
  • the leg member 130 is installed as described above. In this case, when the reciprocating cylinder 140 reciprocates, the leg member 130 rotates around the hinge pin 138, and the lower end of the leg member 130 rotates toward the front leg member 120 and then returns to the original position thereof.
  • the lift member 160 may also include a body 162 fixedly installed in the main frame 100, a lift cylinder 164 fixedly installed in the body 162, and an excavation prevention plate 166 attached to the end of a piston 165 of the lift cylinder 164.
  • the excavation prevention plate 166 is preferably formed in the shape of a triangle having a wide bottom so as not to easily dig into the ground even in a tidal flat or the like.
  • leg members 120 and 130 and the lift member 160 When the leg members 120 and 130 and the lift member 160 are installed as described above, it is possible to move the main frame 100 in a self-propelled manner.
  • the upper end of the leg member 130 remains in the state in which the same is in close contact with the inclined rod 116 of the main frame 100.
  • the excavation prevention plate 166 maintains a position higher than the position of the excavation piece 134 of the leg member 130 (a position further away from the ground).
  • the ski plate 124 of the front leg member 120 is located on the surface of the ground, and the excavation piece 134 of the rear leg member 130 remains in the state in which the same digs into the ground. Accordingly, the main frame 100 remains in the state in which the same is fixedly installed at a predetermined position.
  • the lift cylinder 164 of the lift member 160 When it is desired to move the main frame 100 in the above-described state, the lift cylinder 164 of the lift member 160 is operated to move the piston 165 forwards, the excavation prevention plate 166 comes into contact with the ground when the piston 165 move forwards, and the piston 165 moves forwards when the lift cylinder 164 is continuously operated.
  • the excavation prevention plate 166 prevents the lift member 160 from digging into the ground, force is applied in the direction in which the main frame 100 is lifted, and therefore the rear leg member 130 enters the state in which the excavation piece 134 is lifted from the ground.
  • the reciprocating cylinder 140 is operated to move the piston 142 forwards, and the leg member 130 rotates around the hinge pin 138. As a result, the lower end of the leg member 130 moves toward the front leg member 120.
  • the lift cylinder 164 of the lift member 160 is operated to move the piston 165 rearwards, and the excavation prevention plate 166 enters the state in which the same is lifted from the ground. Accordingly, the excavation piece 134 of the leg member 130 is in a state of digging into the ground again, and the lift cylinder 164 of the lift member 160 moves rearwards to the original position thereof.
  • the reciprocating cylinder 140 is operated to move the piston 142 rearwards, and the leg member 130 rotates around the hinge pin 138.
  • the excavation piece 134 is in the state of digging into the ground, force pushing the main frame 100 forwards is naturally generated.
  • the ski plate 124 is attached to the lower end of the leg member 120, the main frame 100 moves forwards while the leg member 120 slides on the ground.
  • the reciprocating cylinder 140 moves rearwards so that the piston 142 moves to the original position thereof.
  • the wave-power receiving body 200 is supported by a plurality of support wires 220 installed at the upper portion of the main frame 100, thereby making it possible to perform pendulum movement forwards and rearwards.
  • Wave power acts on the wave-power receiving body 200.
  • the wave-power receiving body 200 may be formed in the shape of a box having an open front surface.
  • the wave-power receiving body 200 may be formed in the shape of a box having a trapezoidal cross-section.
  • the wave-power receiving body 200 may have a partition plate 230 installed therein to divide the inside of the wave-power receiving body 200 into a plurality of sections. In this manner, the wave-power receiving body 200 may maintain rigidity thereof, and hydraulic pressure acting on the same may be distributed among the plurality of sections resulting from the division.
  • the partition plate 230 is installed therein, thereby greatly improving the overall structural strength of the wave-power receiving body 200 and reliably maintaining the strength thereof. Accordingly, the wave-power receiving body 200 is not easily deformed even when wave power acts thereon.
  • a forward-and-rearward guide protrusion 240 may also be installed on the bottom surface of the wave-power receiving body 200 so as to protrude long in the movement direction of the wave-power receiving body 200, thereby preventing leftward-and-rightward fluctuation of the wave-power receiving body 200 and allowing the wave-power receiving body 200 to perform forward-and-rearward reciprocating pendulum motion.
  • the plurality of forward-and-rearward guide protrusions 240 may also be formed at intervals in the width direction of the wave-power receiving body 200 (which is the direction perpendicular to the forward-and-rearward movement direction of the wave-power receiving body 200).
  • Each of the forward-and-rearward guide protrusions 240 may be formed by allowing the lower end of the partition plate 230 to protrude from the bottom surface of the wave-power receiving body 200.
  • the forward-and-rearward guide protrusion 240 is formed on the bottom surface of the wave-power receiving body 200 as described above, the bottom surface thereof is in contact with the ground, thereby making it possible to prevent sand or mud from flowing into the wave-power receiving body 200.
  • the wave-power receiving body 200 may be formed in the shape of a box having a concave front surface to form the inner surface thereof, and may be formed to have various cross-sectional shapes, such as a " ⁇ " shape, a "U” shape, a "V” shape, or a "C” shape.
  • seawater flows into the wave-power receiving body 200 during high tide, when waves come in, and wave power acts on the wave-power receiving body 200.
  • the wave-power receiving body 200 when the wave-power receiving body 200 is installed so that the front surface thereof is oriented to face the land, seawater flows into the wave-power receiving body 200 during low tide, when waves go out, and wave power acts on the wave-power receiving body 200.
  • the wave-power receiving body 200 may have an inner bottom surface formed to be gradually inclined upwards from the front surface thereof to the rear surface thereof, thereby making it possible not only to easily discharge seawater from the wave-power receiving body 200, but also to smoothly discharge sand, mud, foreign substances, shellfish, and the like, which have been introduced into the wave-power receiving body 200 together with the seawater, from the wave-power receiving body 200 when the seawater flows out therefrom.
  • the respective support wires 220 are installed to support the front portion and the rear portion of the wave-power receiving body 200.
  • a pair of wire support members 260 is rotatably installed at respective positions on the upper portion of the main frame 100.
  • the positions respectively correspond to the front surface portion and the rear surface portion of the wave-power receiving body 200.
  • each of the wire support members 260 may also be fixedly installed at the corresponding position in the state in which the end of the support wire 220 is wound around the wire support member 260.
  • the pair of wire support members 260 is installed to extend long in the width direction of the wave-power receiving body 200.
  • the pair of wire support members 260 is installed to be rotatably supported by the horizontal rod 112, which is configured to form the upper surface of the main frame 100.
  • the plurality of support wires 220 installed at the front surface portion of the wave-power receiving body 200 may be connected to one wire support member 260, and the plurality of support wires 220 installed at the rear surface portion of the wave-power receiving body 200 may be connected to the other wire support member 260.
  • a winding drive source 264 may be installed at the upper portion of the main frame 100, and the winding drive source 264 may be connected to the wire support member 260.
  • the support wire 220 is wound around the wire support member 260 and is unwound therefrom, thereby making it possible to adjust the height of the wave-power receiving body 200.
  • the winding drive source 264 and the wire support member 260 are installed as described above, it is possible not only to adjust the height of the wave-power receiving body 200 in response to a change in the height of the sea level due to the ebb and flow of tide, but also to maintain approximately constant wave power acting on the wave-power receiving body 200.
  • the generator 300 is installed on one side of the main frame 100.
  • the generator 300 may be installed on the upper surface of the main frame 100.
  • a drive shaft 320 is connected to a shaft of a rotor of the generator 300.
  • a flywheel 380 may be installed in the drive shaft 320 to maintain stable rotation.
  • the one-way clutch 600 is installed between the drive shaft 320 and the shaft of the rotor of the generator 300.
  • the one-way clutch 600 functions to transmit rotation of the drive shaft 320 to the shaft of the rotor of the generator 300 in only one direction.
  • the drive wire 400 has one end thereof connected to the drive shaft 320 and a remaining end thereof connected to the wave-power receiving body 200.
  • a plurality of fixing wires 410 are installed along the edge of the front surface portion of the wave-power receiving body 200. Next, the ends of the plurality of fixing wires 410 are combined into one, and the combined fixing wires 410 are connected to the other end of the drive wire 400, thereby also making it possible to connect the drive wire 400 to the wave-power receiving body 200.
  • the wire guide member 500 is installed in the main frame 100 and is configured to guide the movement of the drive wire 400.
  • the wire guide member 500 is formed of a main body 510, inclined at a predetermined angle relative to the main frame 100, and a guide roller 520, installed in the main body 510 and configured to guide the path of the drive wire 400.
  • the positions of the main body 510 and the guide roller 520 of the wire guide member 500 are set so that the drive wire 400 connects the drive shaft 320 and the wave-power receiving body 200 in an approximately triangular shape.
  • a position-fixing member 530 is fixedly installed in the inclined rod 116 of the main frame 100, and the main body 510 is fixedly installed in the position-fixing member 530, thereby also making it possible to set the positions of the main body 510 and the guide roller 520 and install the same.
  • one end of the drive wire 400 may be formed as a chain 430 so that energy transmission (conversion of linear motion into rotational motion) between the drive wire 400 and the drive shaft 320 is more reliably performed, and a sprocket engaged with the chain 430 may be formed on the drive shaft 320.
  • a weight 440 may be installed at the end of the chain 430 so that constant tension is always applied thereto.
  • the weight 440 is preferably set to a weight corresponding to the weight of the drive wire 400.
  • the weight 440 is preferably set so as to generate gravitational force sufficient to maintain the tension by rotating the drive shaft 320 and pulling the drive wire 400.
  • the rotational force of the drive shaft 320 not be transmitted to the rotor of the generator 300 by the one-way clutch 600. In this manner, less force is required to rotate the drive shaft 320.
  • the weight 440 is installed as described above. In this case, when the wave-power receiving body 200 moves forwards and the drive wire 400 moves toward the generator 300, the end of the drive wire 400 is moved downwards by the gravitational force acting on the weight 440 to thereby maintain tension of the drive wire 400 constant. On the other hand, when the wave-power receiving body 200 is moved rearwards by wave power, the drive wire 400 moves toward the wave-power receiving body 200 in the state in which the constant tension is maintained by the gravitational force acting on the weight 440.
  • one end of the drive wire 400 (the end of the generator 300) may be fixedly connected to the main frame 100 using a spring or the like in the state in which the one end of the drive wire 400 is wound around the drive shaft 320 a plurality of times.
  • the wave-power receiving body 200 is moved toward the shore, and the drive wire 400 is pulled as the wave-power receiving body 200 is moved.
  • the drive wire 400 is moved toward the wave-power receiving body 200, the drive shaft 320 is rotated, and the rotor of the generator 300, receiving rotational force of the drive shaft 320, is also rotated, thereby performing power generation.
  • the one-way clutch 600 may be operated so that the rotation of the drive shaft 320 is not transmitted to the rotor of the generator 300.
  • the above-described procedure is repeatedly performed when the waves of seawater, repeatedly coming in and going out between the sea and the land, repeatedly act on the wave-power receiving body 200, thereby performing power generation by wave power.
  • a wave power generator according to a second embodiment of the present invention is installed so that one side of the wave-power receiving body 200 in the width direction is rotatably supported by the main frame 100 in the horizontal direction.
  • a support shaft 170 is installed vertically on one side of the main frame 100, and the support shaft 170 is rotatably inserted into a bearing bracket 270 installed on one side of the wave-power receiving body 200 in the width direction, thereby also making it possible to install the wave-power receiving body 200.
  • the drive wire 400 is connected to an edge portion of the wave-power receiving body 200.
  • the edge portion is opposite the one side of the wave-power receiving body 200, the one side being rotatably supported by the support shaft 170 installed in the main frame.
  • the wave-power receiving body 200 When the wave-power receiving body 200 is installed as described above and wave power acts on the wave-power receiving body 200, the wave-power receiving body 200 rotates around the support shaft 170 and pulls the drive wire 400.
  • the wave power generator according to the second embodiment of the present invention may have the same configuration as the first embodiment except for the above-described configuration, a detailed description thereof will be omitted.
  • the wave-power receiving body 200 may be supported by a plurality of support wires 220, and the wire support member 260 and the winding drive source 264, which are configured to adjust the length of the support wire 220, may be installed.
  • a plurality of fixing wires 410 may be installed along the edge portion of the wave-power receiving body 200 to which the drive wire 400 is connected. Thereafter, the end portions of the plurality of fixing wires 410 may be collected at one point, and the one point may be connected to the drive wire 400.
  • the wave-power receiving body 200 is rotated toward the shore around the support shaft 170, and the drive wire 400 is pulled as the wave-power receiving body 200 is rotated.
  • the drive wire 400 is pulled toward the wave-power receiving body 200
  • the drive shaft 320 is rotated, and the rotor of the generator 300, receiving the rotational force of the drive shaft 320, is also rotated, thereby performing power generation.
  • the waves at low tide during which seawater, pushed toward the shore, flows toward the sea, come into contact with the wave-power receiving body 200, the wave power of the waves at low tide acts on the rear surface portion of the wave-power receiving body 200, and the wave-power receiving body 200 is rotated toward the sea.
  • the tension of the drive wire 400 is reduced, and the gravitational force acting on the weight 440 is transferred to the drive wire 400. Accordingly, the drive wire 400 is moved toward the generator 300.
  • the one-way clutch 600 may be operated so that the rotation of the drive shaft 320 is not transmitted to the rotor of the generator 300.
  • the above-described procedure is repeatedly performed when the waves of seawater, repeatedly coming in and going out between the sea and the land, repeatedly act on the wave-power receiving body 200, thereby performing power generation using wave power.
  • a wave power generator according to a third embodiment of the present invention is additionally provided with an auxiliary wave-power receiving body 700.
  • the auxiliary wave-power receiving body 700 of the wave power generator according to the third embodiment of the present invention may be provided with a pair of pendulum rods 720.
  • each of the pair of pendulum rods 720 is rotatably supported at a middle point of a corresponding one of opposite sides of the main frame 100 in the width direction.
  • the lower ends of the pair of pendulum rods 720 may be rotatably connected to the respective opposite sides of the auxiliary wave-power receiving body 700 in the width direction to allow the auxiliary wave-power receiving body 700 to be rotatable.
  • connection rod 730 The upper ends of the pair of pendulum rods 720 are connected to each other by a connection rod 730, thereby forming a " ⁇ " shape.
  • an auxiliary drive wire 740 may have one end thereof connected to the drive shaft 320 connected to the shaft of the rotor of the generator 300, and the other end thereof connected to the connection rod 730.
  • Each of the pair of pendulum rods 720 is rotatably installed in the main frame 100 using a hinge pin 722 at a middle point of the main frame 100, and is installed to reciprocate around the hinge pin 722. That is, the same performs pendulum movement.
  • a long hole 724 having a long length in the vertical direction is formed at the lower end of each of the pair of pendulum rods 720 so that the auxiliary wave-power receiving body 700 may move upwards and downwards.
  • the auxiliary wave-power receiving body 700 is fitted into the lower end thereof.
  • the auxiliary wave-power receiving body 700 has coupling protrusions 725 respectively installed on opposite sides thereof.
  • each of the coupling protrusions 725 is coupled to a corresponding one of the long holes 724 so as to be slidably movable therein.
  • buoyant body 710 configured to impart buoyancy, on the upper surface of the auxiliary wave-power receiving body 700.
  • the auxiliary wave-power receiving body 700 moves upwards or downwards depending on the depth of the seawater. Accordingly, the same is always positioned close to the surface of the sea, thereby making it possible to constantly have the effective wave power acting on the auxiliary wave-power receiving body 700.
  • the wave power generator according to the third embodiment of the present invention may have the same configuration as the first and second embodiments except for the above-described configuration, a detailed description thereof will be omitted.
  • a wave power generator according to a fourth embodiment of the present invention is additionally provided with an auxiliary wave-power receiving body 702.
  • the auxiliary wave-power receiving body 702 of the wave power generator according to the fourth embodiment of the present invention may install a pair of support rods 752, lower ends of which are rotatably connected to respective opposite sides of the main frame 100 in the width direction.
  • opposite sides of the auxiliary wave-power receiving body 702 in the width direction may be rotatably connected to the respective upper ends of the pair of support rods 752.
  • a shaft protrusion 758 which is rotatably coupled to each of the upper ends of the pair of support rods 752, is installed in each of the opposite sides of the auxiliary wave-power receiving body 702 in the width direction.
  • a pair of drive cylinders 760 may be installed in the main frame 100.
  • each of the pair of drive cylinders 760 has a piston rod 762, the end of which is rotatably connected to a corresponding one of the upper ends of the pair of support rods 752.
  • a hydraulic line 768 which is connected to the drive cylinder 760, may be installed to rotate the drive shaft 320 connected to the shaft of the rotor of the generator 300.
  • the drive cylinder 760 has an end thereof rotatably installed in an installation rod 754 fixedly installed in the main frame 100.
  • the drive cylinder 760 is installed as described above.
  • the support rod 752 performs pendulum movement around the end thereof that is connected to the main frame 100, and force is applied to the piston rod 762 of the drive cylinder 760, which is connected to the upper end of the support rod 752 in the forward or rearward direction. Accordingly, the drive cylinder 760 is pressurized or decompressed.
  • a driven cylinder 770 may be installed on one side of the main frame 100, and the drive cylinder 760 and the driven cylinder 770 may be connected to each other by the hydraulic line 768. Further, one end of an auxiliary drive wire 780 may be connected to a piston rod 772 of the driven cylinder 770.
  • the other end of the auxiliary drive wire 780 is connected to the drive shaft 320, which is connected to the shaft of the rotor of the generator 300.
  • the driven cylinder 770 and the auxiliary drive wire 780 are installed as described above.
  • the piston rod 772 of the driven cylinder 770 is moved forwards or rearwards by the pressure transmitted through the hydraulic line 768, and the auxiliary drive wire 780 is pulled, or the tension thereof is reduced.
  • the drive shaft 320 having the auxiliary drive wire 780 connected thereto, is rotated, whereby the generator 300 performs power generation.
  • the wave power generator according to the fourth embodiment of the present invention may have the same configuration as the first and second embodiments except for the above-described configuration, a detailed description thereof will be omitted.
  • a wave power generator according to a fifth embodiment of the present invention is formed by combining the configuration of the auxiliary wave-power receiving body 700 of the third embodiment with the configuration of the auxiliary wave-power receiving body 702 of the fourth embodiment.
  • the wave-power receiving body 200 and the auxiliary wave-power receiving bodies 700 and 702 may be installed in different ways, thereby making it possible to implement more efficient power generation by easily responding to various changes in waves.
  • the configurations of the auxiliary wave-power receiving bodies 700 and 702 are added to the configuration of the wave-power receiving body 200 of the second embodiment, but the configurations of the auxiliary wave-power receiving bodies 700 and 702 may also be added to the configuration of the wave-power receiving body 200 of the first embodiment.
  • a wave power generator may be provided with a plurality of wave-power receiving bodies 200, and the plurality of wave-power receiving bodies 200 may be disposed in a stepwise arrangement with a space therebetween so as to achieve a predetermined phase difference between forward and rearward movement directions of waves.
  • the plurality of wave-power receiving bodies 200 may be disposed and installed in a stepwise arrangement such that, if a plurality of imaginary lines are drawn parallel to swells of waves, at least one wave-power receiving body 200 that does not lie on the same imaginary line exits.
  • the plurality of wave-power receiving bodies 200 may be preferably disposed and installed in a stepwise arrangement in a plan view so that not all of the wave-power receiving bodies 200 come into contact with waves simultaneously (so that wave power does not act on all of the wave-power receiving bodies 200 simultaneously).
  • the plurality of wave-power receiving bodies 200 are installed in the stepwise arrangement. Accordingly, when wave power starts to act on the front surface of one wave-power receiving body 200, wave power has already been acting on another wave-power receiving body 200, or wave power starts to act on the rear surface of another wave-power receiving body 200 after the wave power acts on the front surface thereof. That is, wave power acts on the respective wave-power receiving bodies 200 at different times.
  • the wave-power receiving bodies 200 are disposed in a stepwise arrangement with a space therebetween so as to achieve a predetermined phase difference.
  • the plurality of wave-power receiving bodies 200 have different positions so as to sequentially meet waves having various periods. Accordingly, when wave power starts to act on one wave-power receiving body 200, wave power starts to act on another wave-power receiving body 200 with a constant time difference therebetween (which is different from the period of the wave), thereby making it possible to continuously apply the wave power to the different wave-power receiving bodies 200 without a resting time. In this manner, power generation may be continuously performed.
  • the plurality of support wires 220, the pair of wire support members 260, and the winding drive source 264 which are installed so as to correspond to each of the plurality of wave-power receiving bodies 200, may be configured as one module or one set. After that, one module or one set is installed in the main frame 100 to allow each of the wave-power receiving bodies 200 to be independently moved in the forward-and-rearward direction. In this manner, if necessary, it is possible to change and adjust the phase difference between the wave-power receiving bodies 200 in response to a change in the period of the waves.
  • the module including the plurality of support wires 220, the pair of wire support members 260, and the winding drive source 264, which are independently installed for each of the plurality of wave-power receiving bodies 200, may be configured to be movable forwards and rearwards using a reciprocating cylinder or a motor.
  • the wave power generator according to the sixth embodiment of the present invention may have the same configuration as the first embodiment except for the above-described configuration, a detailed description thereof will be omitted.

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Abstract

Disclosed is a wave power generator including a main frame having a box shape with an open bottom, a wave-power receiving body supported by a plurality of support wires installed at an upper portion of the main frame to enable forward and rearward pendulum movement thereof, the wave-power receiving body being affected by wave power acting thereon, a generator installed on one side of the main frame, a drive wire having one end thereof connected to a drive shaft connected to a shaft of a rotor of the generator and a remaining end thereof connected to the wave-power receiving body, a wire guide member installed in the main frame and configured to guide movement of the drive wire, and a one-way clutch installed in the drive shaft and configured to function to transmit rotation to the shaft of the rotor of the generator in only one direction.

Description

WAVE POWER GENERATOR
The present invention relates to a wave power generator, and more particularly to a wave power generator configured to support a wave-power receiving body using a plurality of support wires, thereby making it possible to easily withstand fluctuations in wave power.
In general, as a method of generating electricity, there are various methods depending on the type of energy to be used, such as hydroelectric power generation, thermal power generation, nuclear power generation, solar thermal power generation, solar electrical power generation, wind power generation, tidal power generation, and wave power generation.
Recently, problems related to various types of environmental pollution, safety, and consumption of limited resources have been the subject of much discussion. In consideration of the current problems, various efforts are being continuously made to develop power generation using renewable energy sources such as wind power, solar heat, sunlight, tidal power, and wave power, and a lot of research and development has been actively conducted on the above-described power generation methods.
For example, KR 10-1075138, KR 10-1075137, KR 10-0886837, and KR 10-2010-0096310 disclose technology in which power generation is performed using horizontal kinetic energy of wave power generated when waves come in and go out repeatedly between the sea and the land due to the ebb and flow of tide.
In the case of a wave power generator of the related art, a wave-power receiving body or an enclosure box, which is directly affected by wave power, and a connection rod configured to support the same are made of a rigid structure. Accordingly, when sudden and strong wave power acts on the wave-power receiving body or the enclosure box, the same may be damaged, which results in reduced durability.
Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a wave power generator configured to support a wave-power receiving body, which is directly affected by wave power, using a plurality of support wires, thereby making it possible to easily withstand fluctuations in wave power and to improve durability.
In accordance with the present invention, the above and other objects can be accomplished by the provision of a wave power generator including a main frame having a box shape with an open bottom, a wave-power receiving body supported by a plurality of support wires installed at an upper portion of the main frame to enable forward and rearward pendulum movement thereof, the wave-power receiving body being affected by wave power acting thereon, a generator installed on one side of the main frame, a drive wire having one end thereof connected to a drive shaft connected to a shaft of a rotor of the generator and a remaining end thereof connected to the wave-power receiving body, a wire guide member installed in the main frame and configured to guide movement of the drive wire, and a one-way clutch installed in the drive shaft and configured to function to transmit rotation to the shaft of the rotor of the generator in only one direction.
The main frame may be formed in the box shape having a trapezoidal cross-section with a narrow upper surface, and may be formed by connecting a plurality of horizontal rods, a plurality of vertical rods, and a plurality of inclined rods to each other to form a frame structure.
A flywheel may be installed in the drive shaft to maintain stable rotation.
The wave-power receiving body may be formed in a box shape having an open front surface.
The wave-power receiving body may be formed in a box shape having a trapezoidal cross-section, and may have a partition plate installed therein to divide an inside thereof into a plurality of sections, thereby maintaining rigidity thereof and distributing hydraulic pressure acting thereon among the plurality of sections into which the wave-power receiving body is divided.
The respective support wires may be installed to support a front portion of the wave-power receiving body and a rear portion thereof.
The main frame may have a pair of wire support members rotatably installed at the upper portion thereof, the pair of wire support members being disposed at positions respectively corresponding to a front surface portion of the wave-power receiving body and a rear surface portion thereof, wherein the support wire may be fixedly installed in the wire support member, wherein an end of the support wire may be wound around the wire support member.
The pair of wire support members may be installed to extend long in a width direction of the wave-power receiving body, wherein the plurality of support wires installed at the front surface portion of the wave-power receiving body may be connected to one wire support member, wherein the plurality of support wires installed at the rear surface portion of the wave-power receiving body may be connected to the other wire support member.
The main frame may have a winding drive source installed at the upper portion thereof, the winding drive source being connected to the wire support member, wherein the support wire may be wound around the wire support member and may be unwound therefrom when the wire support member is rotated as necessary, thereby adjusting a height of the wave-power receiving body.
The wave-power receiving body may have a plurality of fixing wires installed along an edge of a front surface portion thereof, wherein ends of the plurality of fixing wires may be combined into one so as to be connected to the remaining end of the drive wire, thereby connecting the drive wire to the wave-power receiving body.
The main frame may have a plurality of leg members at lower ends thereof.
One of the front and rear leg members, among the plurality of leg members, may have a ski plate attached to a lower end thereof, and a remaining leg member may have an excavation piece attached to a lower end thereof.
The excavation piece may be formed in the shape of a shovel or a fork, and an excavation limitation wing may be formed in the excavation piece to limit the depth of digging into the ground.
The leg member, having the excavation piece attached thereto, may be rotatably assembled with and installed in the main frame at a location thereof a predetermined distance lower than an upper end thereof. The leg member, having the excavation piece attached thereto, may have the upper end thereof rotatably connected to a piston of a reciprocating cylinder fixedly installed in the main frame. A lift member may be installed in the main frame on a side of the leg member having the excavation piece attached thereto, wherein the lift member may adjust a height thereof.
The lift member may include a body fixedly installed in the main frame, a lift cylinder fixedly installed in the body, and an excavation prevention plate attached to an end of a piston of the lift cylinder.
The wave-power receiving body may have one side thereof in a width direction supported by and installed in the main frame so as to be rotatable in a horizontal direction, and the remaining end of the drive wire may be connected to an edge portion of the wave-power receiving body, wherein the edge portion may be opposite the one side of the wave-power receiving body, the one side being rotatably supported by the mainframe.
The wave power generator according to the embodiment of the present invention may further include an auxiliary wave-power receiving body.
The auxiliary wave-power receiving body may install a pair of pendulum rods therein, wherein each of the pair of pendulum rods may be rotatably supported at a middle point of a corresponding one of opposite sides of the main frame in the width direction, wherein lower ends of the pair of pendulum rods may be rotatably connected to respective opposite sides of the auxiliary wave-power receiving body in the width direction.
Upper ends of the pair of pendulum rods may be connected to each other by a connection rod to form a "ㄷ" shape, wherein the connection rod may be connected to a remaining end of an auxiliary drive wire, wherein the auxiliary drive wire may have one end thereof connected to the drive shaft connected to the shaft of the rotor of the generator.
The auxiliary wave-power receiving body may have a pair of support rods installed therein, wherein lower ends of the pair of support rods may be rotatably connected to respective opposite sides of the main frame in the width direction, wherein upper ends of the pair of support rods may be rotatably connected to respective opposite sides of the auxiliary wave-power receiving body in the width direction.
The main frame may have a pair of drive cylinders installed therein, wherein each of the pair of drive cylinders may have a piston rod, wherein an end of the piston rod may be rotatably connected to a corresponding one of the upper ends of the pair of support rods, wherein the drive cylinder may have a hydraulic line connected thereto so as to rotate the drive shaft connected to the shaft of the rotor of the generator.
The drive cylinder may have an end thereof rotatably installed in an installation rod fixedly installed in the main frame, wherein the main frame may have a driven cylinder installed on one side thereof, wherein the drive cylinder and the driven cylinder may be connected to each other by the hydraulic line, wherein the driven cylinder may have a piston rod, wherein the piston rod may be connected to one end of an auxiliary drive wire, wherein the other end of the auxiliary drive wire may be connected to the drive shaft connected to the shaft of the rotor of the generator.
The wave-power receiving body may be provided in a plural number, wherein the plurality of wave-power receiving bodies may be disposed with a space therebetween so as to have a predetermined phase difference between forward and rearward movement directions of a wave.
A wave power generator according to an embodiment of the present invention provides the following effects.
A wave-power receiving body is installed to perform pendulum movement using a plurality of support wires, thereby making it possible to appropriately respond to external force having large rapid fluctuations due to the action of wave power. Additionally, it is possible to reduce the occurrence of breakage or damage to a component to which wave power is applied, thereby improving durability.
In addition, some leg members have ski plates attached thereto, other leg members have excavation pieces and reciprocating cylinders attached thereto, and a lift member is installed in a main frame, thereby making it possible to easily move the installation position of the wave power generator as necessary. Further, in response to a typhoon or storm, it is possible to easily move from the sea to an evacuation site on land without using a lot of labor.
Additionally, the length of the support wire is easily adjusted by using a winding drive source and a wire support member, thereby making it possible to keep the wave power acting on the wave-power receiving body approximately constant without a significant difference in response to changes in the sea level between high tide and low tide.
Furthermore, auxiliary wave-power receiving bodies are additionally installed in different ways, thereby making it possible to implement more efficient power generation by easily responding to various changes in waves.
Moreover, the wave-power receiving bodies are disposed and installed in a stepwise arrangement so as to have a phase difference therebetween, thereby enabling wave power from other swells to act on the wave-power receiving body having a different phase difference even during a resting period of some swells that occur due to the nature of the waves. Accordingly, it is possible to perform uninterrupted power generation.
The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a front perspective view showing a wave power generator according to a first embodiment of the present invention;
FIG. 2 is a rear perspective view showing the wave power generator according to the first embodiment of the present invention;
FIG. 3 is a bottom perspective view showing the wave power generator according to the first embodiment of the present invention;
FIG. 4 is a perspective view showing a main configuration in which power generation is performed in the state in which a main frame or the like is removed in the wave power generator according to the first embodiment of the present invention;
FIG. 5 is a perspective view showing the main configuration of the main frame in the wave power generator according to the first embodiment of the present invention;
FIG. 6 is a front perspective view showing a wave power generator according to a second embodiment of the present invention;
FIG. 7 is a rear perspective view showing the wave power generator according to the second embodiment of the present invention;
FIG. 8 is a perspective view showing a main configuration in which power generation is performed in the state in which a main frame or the like is removed in the wave power generator according to the second embodiment of the present invention;
FIG. 9 is a front perspective view showing a wave power generator according to a third embodiment of the present invention;
FIG. 10 is a front perspective view showing a wave power generator according to a fourth embodiment of the present invention;
FIG. 11 is a front perspective view showing a wave power generator according to a fifth embodiment of the present invention;
FIG. 12 is a front perspective view showing a wave power generator according to a sixth embodiment of the present invention; and
FIG. 13 is a rear perspective view showing the wave power generator according to the sixth embodiment of the present invention.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains may easily implement the present invention. However, it should be understood that the embodiments according to the concept of the present invention are not intended to be limited to the specific disclosed forms, and include all modifications, equivalents, and substitutes that fall within the spirit and technical scope of the present invention.
The terms used in the specification are only used to describe specific embodiments, and are not intended to limit the present invention. In this specification, an expression in a singular form also includes the plural sense, unless clearly specified otherwise in context. It should be understood that expressions such as "comprise" and "have" in this specification are intended to designate the presence of indicated features, numbers, steps, operations, components, parts, or combinations thereof, but do not exclude the presence or addition of one or more features, numbers, steps, operations, components, parts, or combinations thereof.
Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meanings as commonly understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the context of the related technology. Further, unless explicitly defined in this specification, the terms should not be interpreted in an ideal or overly formal sense.
The term "module" used herein means one unit configured to process a specific function or operation, which may mean hardware or software or a combination of hardware and software.
In addition, the terms or words used in the specification and claims should not be construed as being limited to conventional or dictionary meanings, but should be interpreted as having meanings and concepts consistent with the technical spirit of the present invention based on the principle that the inventor may appropriately define concepts of the terms in order to describe his or her invention in the best mode. Further, unless otherwise defined, the technical and scientific terms used herein have meanings commonly understood by those skilled in the art to which the present invention pertains. In the following description and accompanying drawings, descriptions of well-known functions and configurations will be omitted so as not to obscure the gist of the present invention. The following drawings are provided as examples in order to sufficiently convey the spirit of the present invention to those skilled in the art. Accordingly, the present invention is not limited to the drawings shown below, and may be embodied in other forms. Further, the same reference numbers will be used throughout the specification to refer to the same components. It should be noted that the same components in the drawings are denoted by the same reference numerals wherever possible.
Next, preferred embodiments of a wave power generator according to the present invention will be described in detail with reference to the drawings.
The present invention may be implemented in various forms, and is not limited to the embodiments described below.
Hereinafter, in order to clearly describe the present invention, detailed descriptions of parts that are not closely related to the present invention are omitted. Throughout the description of the invention, the same reference numerals will be used throughout the drawings to refer to the same or similar components, and repeated descriptions will be omitted.
First, as shown in FIGs. 1 to 5, a wave power generator according to a first embodiment of the present invention includes a main frame 100, a wave-power receiving body 200, a generator 300, a drive wire 400, a wire guide member 500, and a one-way clutch 600.
The main frame 100 is formed in the shape of a box having an open bottom.
For example, the main frame 100 is formed in the shape of a box. Here, the box shape is a trapezoidal cross-sectional shape with a narrow upper surface.
The main frame 100 is formed by connecting a plurality of horizontal rods 112, a plurality of vertical rods 114, and a plurality of inclined rods 116 to each other. In this manner, a frame structure is formed.
For example, the plurality of horizontal rods 112 are disposed on the upper surface of the main frame 100 to form a quadrangular shape and are installed in a state of being connected to each other, and the plurality of vertical rods 114 are connected to and installed in the plurality of horizontal rods 112 vertically beneath the vertices of the plurality of horizontal rods 112 on the upper surface thereof. Next, the plurality of inclined rods 116 are connected to and installed in the plurality of horizontal rods 112 in the state in which the inclined rods 116 are inclined outwards relative to the respective vertical rods 114 at a predetermined angle from the vertices of the horizontal rods 112 on the upper surface, thereby making it possible to form the main frame 100 in the shape of a box having a trapezoidal cross-section.
In the above-described main frame 100, it is also possible to additionally install the horizontal rod 112 so as to extend to the inclined rod 116 while connecting the lower ends of the vertical rods 114 to each other.
In addition, it is also possible to additionally install the horizontal rod 112 so as to connect the inclined rods 116 to each other.
As described above, when the plurality of horizontal rods 112, the plurality of vertical rods 114, and the plurality of inclined rods 116 are installed and connected to each other in order to form a truss structure, it is possible to reliably maintain the structural strength of the main frame 100.
It is also possible to form a structure for installation of the generator 300 or the like by additionally installing the horizontal rods 112 on the upper surface of the main frame 100.
As necessary, the external plane of the main frame 100, which is formed by the horizontal rod 112 and the inclined rod 116, may be blocked with a plate or the like.
Further, as shown in FIGs. 1 to 3 and 5, it is also possible to install a plurality of leg members 120 and 130 at the lower ends of the main frame 100.
A ski plate 124 may also be attached to the lower end of the front leg member 120.
The ski plate 124 may be rotatably installed at the lower end of the front leg member 120 using a hinge pin 123.
Additionally, an excavation piece 134 may be attached to the lower end of the rear leg member 130.
The excavation piece 134 may be formed in the shape of a shovel or a fork.
An excavation limitation wing 135 may be formed in the excavation piece 134 to limit the depth of digging into the ground.
Further, in a different manner, the leg member 120, having the ski plate 124 attached thereto, may be installed at the rear, and the leg member 130, having the excavation piece 134 attached thereto, may be installed at the front.
The leg member 130, having the excavation piece 134 attached thereto, is rotatably assembled with and installed in the inclined rod 116 of the main frame 100 at a location thereof a predetermined distance lower than the upper end thereof. Further, the upper end of the leg member 130, having the excavation piece 134 attached thereto, is rotatably connected to a piston 142 of a reciprocating cylinder 140 fixedly installed in the main frame 100. Here, a lift member 160 that is adjustable in height may also be installed in the main frame 100 on the side of the leg member 130 having the excavation piece 134 attached thereto.
For example, the leg member 130 is rotatably assembled with and installed in the inclined rod 116 of the main frame 100 using a hinge pin 138.
The reciprocating cylinder 140 is fixedly installed in the horizontal rod 112 connected to the lower end of the vertical rod 114 of the main frame 100.
The end of the piston 142 of the reciprocating cylinder 140 and the upper end of the leg member 130 are rotatably connected to each other.
The leg member 130 is installed as described above. In this case, when the reciprocating cylinder 140 reciprocates, the leg member 130 rotates around the hinge pin 138, and the lower end of the leg member 130 rotates toward the front leg member 120 and then returns to the original position thereof.
The lift member 160 may also include a body 162 fixedly installed in the main frame 100, a lift cylinder 164 fixedly installed in the body 162, and an excavation prevention plate 166 attached to the end of a piston 165 of the lift cylinder 164.
The excavation prevention plate 166 is preferably formed in the shape of a triangle having a wide bottom so as not to easily dig into the ground even in a tidal flat or the like.
When the leg members 120 and 130 and the lift member 160 are installed as described above, it is possible to move the main frame 100 in a self-propelled manner.
For example, in the state in which the piston 142 of the reciprocating cylinder 140 of the leg member 130 is moved rearwards (the state in which the piston 142 enters the inside of the reciprocating cylinder 140), the upper end of the leg member 130 remains in the state in which the same is in close contact with the inclined rod 116 of the main frame 100.
Additionally, in the state in which the piston 165 of the lift cylinder 164 of the lift member 160 is moved rearwards (the state in which the piston 165 enters the inside of the lift cylinder 164), the excavation prevention plate 166 maintains a position higher than the position of the excavation piece 134 of the leg member 130 (a position further away from the ground).
In the state as described above, the ski plate 124 of the front leg member 120 is located on the surface of the ground, and the excavation piece 134 of the rear leg member 130 remains in the state in which the same digs into the ground. Accordingly, the main frame 100 remains in the state in which the same is fixedly installed at a predetermined position.
When it is desired to move the main frame 100 in the above-described state, the lift cylinder 164 of the lift member 160 is operated to move the piston 165 forwards, the excavation prevention plate 166 comes into contact with the ground when the piston 165 move forwards, and the piston 165 moves forwards when the lift cylinder 164 is continuously operated. However, because the excavation prevention plate 166 prevents the lift member 160 from digging into the ground, force is applied in the direction in which the main frame 100 is lifted, and therefore the rear leg member 130 enters the state in which the excavation piece 134 is lifted from the ground.
When the excavation piece 134 is lifted from the ground as described above, the reciprocating cylinder 140 is operated to move the piston 142 forwards, and the leg member 130 rotates around the hinge pin 138. As a result, the lower end of the leg member 130 moves toward the front leg member 120.
When the excavation piece 134, which is the lower end of the leg member 130, moves toward the front leg member 120 as described above, the lift cylinder 164 of the lift member 160 is operated to move the piston 165 rearwards, and the excavation prevention plate 166 enters the state in which the same is lifted from the ground. Accordingly, the excavation piece 134 of the leg member 130 is in a state of digging into the ground again, and the lift cylinder 164 of the lift member 160 moves rearwards to the original position thereof.
When the excavation piece 134 of the leg member 130 digs into the ground and the position thereof is fixed as described above, the reciprocating cylinder 140 is operated to move the piston 142 rearwards, and the leg member 130 rotates around the hinge pin 138. Here, since the excavation piece 134 is in the state of digging into the ground, force pushing the main frame 100 forwards is naturally generated. Further, since the ski plate 124 is attached to the lower end of the leg member 120, the main frame 100 moves forwards while the leg member 120 slides on the ground.
In this case, the reciprocating cylinder 140 moves rearwards so that the piston 142 moves to the original position thereof.
It is possible to move the position of the mainframe 100 by repeatedly and sequentially performing forward movement of the piston 165 by the operation of the lift cylinder 164 of the lift member 160, forward movement of the piston 142 by the operation of the reciprocating cylinder 140, rearward movement of the piston 165 by the operation of the lift cylinder 164, and rearward movement of the piston 142 by the operation of the reciprocating cylinder 140.
In addition, the wave-power receiving body 200 is supported by a plurality of support wires 220 installed at the upper portion of the main frame 100, thereby making it possible to perform pendulum movement forwards and rearwards.
Wave power acts on the wave-power receiving body 200.
The wave-power receiving body 200 may be formed in the shape of a box having an open front surface.
The wave-power receiving body 200 may be formed in the shape of a box having a trapezoidal cross-section.
The wave-power receiving body 200 may have a partition plate 230 installed therein to divide the inside of the wave-power receiving body 200 into a plurality of sections. In this manner, the wave-power receiving body 200 may maintain rigidity thereof, and hydraulic pressure acting on the same may be distributed among the plurality of sections resulting from the division.
As described above, the partition plate 230 is installed therein, thereby greatly improving the overall structural strength of the wave-power receiving body 200 and reliably maintaining the strength thereof. Accordingly, the wave-power receiving body 200 is not easily deformed even when wave power acts thereon.
A forward-and-rearward guide protrusion 240 may also be installed on the bottom surface of the wave-power receiving body 200 so as to protrude long in the movement direction of the wave-power receiving body 200, thereby preventing leftward-and-rightward fluctuation of the wave-power receiving body 200 and allowing the wave-power receiving body 200 to perform forward-and-rearward reciprocating pendulum motion.
The plurality of forward-and-rearward guide protrusions 240 may also be formed at intervals in the width direction of the wave-power receiving body 200 (which is the direction perpendicular to the forward-and-rearward movement direction of the wave-power receiving body 200).
Each of the forward-and-rearward guide protrusions 240 may be formed by allowing the lower end of the partition plate 230 to protrude from the bottom surface of the wave-power receiving body 200.
When the forward-and-rearward guide protrusion 240 is formed on the bottom surface of the wave-power receiving body 200 as described above, the bottom surface thereof is in contact with the ground, thereby making it possible to prevent sand or mud from flowing into the wave-power receiving body 200.
The wave-power receiving body 200 may be formed in the shape of a box having a concave front surface to form the inner surface thereof, and may be formed to have various cross-sectional shapes, such as a "ㄷ" shape, a "U" shape, a "V" shape, or a "C" shape.
When the wave-power receiving body 200 is installed so that the front surface thereof is oriented to face the sea, seawater flows into the wave-power receiving body 200 during high tide, when waves come in, and wave power acts on the wave-power receiving body 200.
In addition, when the wave-power receiving body 200 is installed so that the front surface thereof is oriented to face the land, seawater flows into the wave-power receiving body 200 during low tide, when waves go out, and wave power acts on the wave-power receiving body 200.
The wave-power receiving body 200 may have an inner bottom surface formed to be gradually inclined upwards from the front surface thereof to the rear surface thereof, thereby making it possible not only to easily discharge seawater from the wave-power receiving body 200, but also to smoothly discharge sand, mud, foreign substances, shellfish, and the like, which have been introduced into the wave-power receiving body 200 together with the seawater, from the wave-power receiving body 200 when the seawater flows out therefrom.
The respective support wires 220 are installed to support the front portion and the rear portion of the wave-power receiving body 200.
Further, as shown in FIGs. 1 to 4, a pair of wire support members 260 is rotatably installed at respective positions on the upper portion of the main frame 100. Here, the positions respectively correspond to the front surface portion and the rear surface portion of the wave-power receiving body 200. In this case, each of the wire support members 260 may also be fixedly installed at the corresponding position in the state in which the end of the support wire 220 is wound around the wire support member 260.
The pair of wire support members 260 is installed to extend long in the width direction of the wave-power receiving body 200.
The pair of wire support members 260 is installed to be rotatably supported by the horizontal rod 112, which is configured to form the upper surface of the main frame 100.
In this case, the plurality of support wires 220 installed at the front surface portion of the wave-power receiving body 200 may be connected to one wire support member 260, and the plurality of support wires 220 installed at the rear surface portion of the wave-power receiving body 200 may be connected to the other wire support member 260.
In addition, a winding drive source 264 may be installed at the upper portion of the main frame 100, and the winding drive source 264 may be connected to the wire support member 260. Here, when the wire support member 260 is rotated as necessary, the support wire 220 is wound around the wire support member 260 and is unwound therefrom, thereby making it possible to adjust the height of the wave-power receiving body 200.
When the winding drive source 264 and the wire support member 260 are installed as described above, it is also possible to maintain the wave-power receiving body 200 in a state in which the same is completely lifted above the surface of the sea when it is required to step power generation as necessary.
In addition, when the winding drive source 264 and the wire support member 260 are installed as described above, it is possible not only to adjust the height of the wave-power receiving body 200 in response to a change in the height of the sea level due to the ebb and flow of tide, but also to maintain approximately constant wave power acting on the wave-power receiving body 200.
The generator 300 is installed on one side of the main frame 100.
For example, the generator 300 may be installed on the upper surface of the main frame 100.
A drive shaft 320 is connected to a shaft of a rotor of the generator 300.
A flywheel 380 may be installed in the drive shaft 320 to maintain stable rotation.
The one-way clutch 600 is installed between the drive shaft 320 and the shaft of the rotor of the generator 300.
The one-way clutch 600 functions to transmit rotation of the drive shaft 320 to the shaft of the rotor of the generator 300 in only one direction.
The drive wire 400 has one end thereof connected to the drive shaft 320 and a remaining end thereof connected to the wave-power receiving body 200.
A plurality of fixing wires 410 are installed along the edge of the front surface portion of the wave-power receiving body 200. Next, the ends of the plurality of fixing wires 410 are combined into one, and the combined fixing wires 410 are connected to the other end of the drive wire 400, thereby also making it possible to connect the drive wire 400 to the wave-power receiving body 200.
The wire guide member 500 is installed in the main frame 100 and is configured to guide the movement of the drive wire 400.
For example, the wire guide member 500 is formed of a main body 510, inclined at a predetermined angle relative to the main frame 100, and a guide roller 520, installed in the main body 510 and configured to guide the path of the drive wire 400.
Here, the positions of the main body 510 and the guide roller 520 of the wire guide member 500 are set so that the drive wire 400 connects the drive shaft 320 and the wave-power receiving body 200 in an approximately triangular shape.
For example, a position-fixing member 530 is fixedly installed in the inclined rod 116 of the main frame 100, and the main body 510 is fixedly installed in the position-fixing member 530, thereby also making it possible to set the positions of the main body 510 and the guide roller 520 and install the same.
Further, one end of the drive wire 400 may be formed as a chain 430 so that energy transmission (conversion of linear motion into rotational motion) between the drive wire 400 and the drive shaft 320 is more reliably performed, and a sprocket engaged with the chain 430 may be formed on the drive shaft 320.
When one end of the drive wire 400 is formed as the chain 430 as described above, a weight 440 may be installed at the end of the chain 430 so that constant tension is always applied thereto.
The weight 440 is preferably set to a weight corresponding to the weight of the drive wire 400.
For example, when tension acting on the drive wire 400 is reduced, the weight 440 is preferably set so as to generate gravitational force sufficient to maintain the tension by rotating the drive shaft 320 and pulling the drive wire 400.
When the tension of the drive wire 400 is prevented from being weakened and sufficient tension thereof is maintained by the gravitational force acting on the weight 440, it is preferable that the rotational force of the drive shaft 320 not be transmitted to the rotor of the generator 300 by the one-way clutch 600. In this manner, less force is required to rotate the drive shaft 320.
The weight 440 is installed as described above. In this case, when the wave-power receiving body 200 moves forwards and the drive wire 400 moves toward the generator 300, the end of the drive wire 400 is moved downwards by the gravitational force acting on the weight 440 to thereby maintain tension of the drive wire 400 constant. On the other hand, when the wave-power receiving body 200 is moved rearwards by wave power, the drive wire 400 moves toward the wave-power receiving body 200 in the state in which the constant tension is maintained by the gravitational force acting on the weight 440.
Although not shown in the drawings, one end of the drive wire 400 (the end of the generator 300) may be fixedly connected to the main frame 100 using a spring or the like in the state in which the one end of the drive wire 400 is wound around the drive shaft 320 a plurality of times.
When configured as described above, it is possible to maintain the tension acting on the drive wire 400 constant using the elastic force of the spring.
Next, a power generation procedure using the wave power generator according to the first embodiment of the present invention, configured as described above, will be described.
First, in the state in which the front surface of the wave-power receiving body 200 is installed to face the sea, when waves at high tide, during which seawater flows toward the shore, come into contact with the wave-power receiving body 200, the seawater flows into the wave-power receiving body 200, and the wave power of the waves at high tide acts on the wave-power receiving body 200. Then, the wave-power receiving body 200 is moved toward the shore, and the drive wire 400 is pulled as the wave-power receiving body 200 is moved. Here, when the drive wire 400 is moved toward the wave-power receiving body 200, the drive shaft 320 is rotated, and the rotor of the generator 300, receiving rotational force of the drive shaft 320, is also rotated, thereby performing power generation.
In the above-described procedure, when the drive wire 400 is pulled by the movement of the wave-power receiving body 200, constant tension is applied to the drive wire 400 by the weight 440. Accordingly, the drive shaft 320 and the drive wire 400 are kept in close contact with each other, and the drive shaft 320 is rotated as the drive wire 400 moves.
For example, since the state in which the chain 430 of the drive wire 400, which is engaged with the sprocket of the drive shaft 320, is maintained at constant tension by the weight 440, the drive shaft 320 is rotated as the drive wire 400 moves.
When waves at low tide, during which seawater pushed toward the shore flows toward the sea, come into contact with the wave-power receiving body 200, the wave power of the waves at low tide acts on the rear surface portion of the wave-power receiving body 200, and the wave-power receiving body 200 is moved toward the sea. At this time, tension of the drive wire 400 is reduced, and the gravitational force acting on the weight 440 is transferred to the drive wire 400. Accordingly, the drive wire 400 is moved toward the generator 300.
When the drive shaft 320 is rotated by the movement of the drive wire 400 according to the gravitational force acting on the weight 440 as described above, the one-way clutch 600 may be operated so that the rotation of the drive shaft 320 is not transmitted to the rotor of the generator 300.
The above-described procedure is repeatedly performed when the waves of seawater, repeatedly coming in and going out between the sea and the land, repeatedly act on the wave-power receiving body 200, thereby performing power generation by wave power.
Additionally, as shown in FIGs. 6 to 8, a wave power generator according to a second embodiment of the present invention is installed so that one side of the wave-power receiving body 200 in the width direction is rotatably supported by the main frame 100 in the horizontal direction.
For example, a support shaft 170 is installed vertically on one side of the main frame 100, and the support shaft 170 is rotatably inserted into a bearing bracket 270 installed on one side of the wave-power receiving body 200 in the width direction, thereby also making it possible to install the wave-power receiving body 200.
The drive wire 400 is connected to an edge portion of the wave-power receiving body 200. Here, the edge portion is opposite the one side of the wave-power receiving body 200, the one side being rotatably supported by the support shaft 170 installed in the main frame.
When the wave-power receiving body 200 is installed as described above and wave power acts on the wave-power receiving body 200, the wave-power receiving body 200 rotates around the support shaft 170 and pulls the drive wire 400.
Since the wave power generator according to the second embodiment of the present invention may have the same configuration as the first embodiment except for the above-described configuration, a detailed description thereof will be omitted.
For example, as in the first embodiment, the wave-power receiving body 200 may be supported by a plurality of support wires 220, and the wire support member 260 and the winding drive source 264, which are configured to adjust the length of the support wire 220, may be installed.
In addition, a plurality of fixing wires 410 may be installed along the edge portion of the wave-power receiving body 200 to which the drive wire 400 is connected. Thereafter, the end portions of the plurality of fixing wires 410 may be collected at one point, and the one point may be connected to the drive wire 400.
Next, a power generation procedure using the wave power generator according to the second embodiment of the present invention, configured as described above, will be described.
First, in the state in which the front surface of the wave-power receiving body 200 is installed to face the sea, when waves at high tide, during which seawater flows toward the shore, come into contact with the wave-power receiving body 200, the seawater flows into the wave-power receiving body 200, and the wave power of the waves at high tide acts on the wave-power receiving body 200. Then, the wave-power receiving body 200 is rotated toward the shore around the support shaft 170, and the drive wire 400 is pulled as the wave-power receiving body 200 is rotated. Here, when the drive wire 400 is pulled toward the wave-power receiving body 200, the drive shaft 320 is rotated, and the rotor of the generator 300, receiving the rotational force of the drive shaft 320, is also rotated, thereby performing power generation.
Further, when the waves at low tide, during which seawater, pushed toward the shore, flows toward the sea, come into contact with the wave-power receiving body 200, the wave power of the waves at low tide acts on the rear surface portion of the wave-power receiving body 200, and the wave-power receiving body 200 is rotated toward the sea. Here, the tension of the drive wire 400 is reduced, and the gravitational force acting on the weight 440 is transferred to the drive wire 400. Accordingly, the drive wire 400 is moved toward the generator 300.
When the drive shaft 320 is rotated by the movement of the drive wire 400 due to the gravitational force acting on the weight 440 as described above, the one-way clutch 600 may be operated so that the rotation of the drive shaft 320 is not transmitted to the rotor of the generator 300.
The above-described procedure is repeatedly performed when the waves of seawater, repeatedly coming in and going out between the sea and the land, repeatedly act on the wave-power receiving body 200, thereby performing power generation using wave power.
As shown in FIG. 9, a wave power generator according to a third embodiment of the present invention is additionally provided with an auxiliary wave-power receiving body 700.
For example, as shown in FIG. 9, the auxiliary wave-power receiving body 700 of the wave power generator according to the third embodiment of the present invention may be provided with a pair of pendulum rods 720. Here, each of the pair of pendulum rods 720 is rotatably supported at a middle point of a corresponding one of opposite sides of the main frame 100 in the width direction. Further, the lower ends of the pair of pendulum rods 720 may be rotatably connected to the respective opposite sides of the auxiliary wave-power receiving body 700 in the width direction to allow the auxiliary wave-power receiving body 700 to be rotatable.
The upper ends of the pair of pendulum rods 720 are connected to each other by a connection rod 730, thereby forming a "ㄷ" shape. Here, an auxiliary drive wire 740 may have one end thereof connected to the drive shaft 320 connected to the shaft of the rotor of the generator 300, and the other end thereof connected to the connection rod 730.
Each of the pair of pendulum rods 720 is rotatably installed in the main frame 100 using a hinge pin 722 at a middle point of the main frame 100, and is installed to reciprocate around the hinge pin 722. That is, the same performs pendulum movement.
A long hole 724 having a long length in the vertical direction is formed at the lower end of each of the pair of pendulum rods 720 so that the auxiliary wave-power receiving body 700 may move upwards and downwards. Here, the auxiliary wave-power receiving body 700 is fitted into the lower end thereof. Further, the auxiliary wave-power receiving body 700 has coupling protrusions 725 respectively installed on opposite sides thereof. Here, each of the coupling protrusions 725 is coupled to a corresponding one of the long holes 724 so as to be slidably movable therein.
It is also possible to install a buoyant body 710, configured to impart buoyancy, on the upper surface of the auxiliary wave-power receiving body 700.
When the buoyant body 710 is installed as described above, the auxiliary wave-power receiving body 700 moves upwards or downwards depending on the depth of the seawater. Accordingly, the same is always positioned close to the surface of the sea, thereby making it possible to constantly have the effective wave power acting on the auxiliary wave-power receiving body 700.
Since the wave power generator according to the third embodiment of the present invention may have the same configuration as the first and second embodiments except for the above-described configuration, a detailed description thereof will be omitted.
Further, as shown in FIG. 10, a wave power generator according to a fourth embodiment of the present invention is additionally provided with an auxiliary wave-power receiving body 702.
For example, as shown in FIG. 10, the auxiliary wave-power receiving body 702 of the wave power generator according to the fourth embodiment of the present invention may install a pair of support rods 752, lower ends of which are rotatably connected to respective opposite sides of the main frame 100 in the width direction. Here, opposite sides of the auxiliary wave-power receiving body 702 in the width direction may be rotatably connected to the respective upper ends of the pair of support rods 752.
A shaft protrusion 758, which is rotatably coupled to each of the upper ends of the pair of support rods 752, is installed in each of the opposite sides of the auxiliary wave-power receiving body 702 in the width direction.
In addition, a pair of drive cylinders 760 may be installed in the main frame 100. Here, each of the pair of drive cylinders 760 has a piston rod 762, the end of which is rotatably connected to a corresponding one of the upper ends of the pair of support rods 752. Further, a hydraulic line 768, which is connected to the drive cylinder 760, may be installed to rotate the drive shaft 320 connected to the shaft of the rotor of the generator 300.
The drive cylinder 760 has an end thereof rotatably installed in an installation rod 754 fixedly installed in the main frame 100.
The drive cylinder 760 is installed as described above. Here, when wave power acts on the auxiliary wave-power receiving body 702 to move the same forwards and rearwards, the support rod 752 performs pendulum movement around the end thereof that is connected to the main frame 100, and force is applied to the piston rod 762 of the drive cylinder 760, which is connected to the upper end of the support rod 752 in the forward or rearward direction. Accordingly, the drive cylinder 760 is pressurized or decompressed.
A driven cylinder 770 may be installed on one side of the main frame 100, and the drive cylinder 760 and the driven cylinder 770 may be connected to each other by the hydraulic line 768. Further, one end of an auxiliary drive wire 780 may be connected to a piston rod 772 of the driven cylinder 770.
The other end of the auxiliary drive wire 780 is connected to the drive shaft 320, which is connected to the shaft of the rotor of the generator 300.
The driven cylinder 770 and the auxiliary drive wire 780 are installed as described above. Here, when wave power acts on the auxiliary wave-power receiving body 702 and the drive cylinder 760 is pressurized or decompressed, the piston rod 772 of the driven cylinder 770 is moved forwards or rearwards by the pressure transmitted through the hydraulic line 768, and the auxiliary drive wire 780 is pulled, or the tension thereof is reduced. Accordingly, the drive shaft 320, having the auxiliary drive wire 780 connected thereto, is rotated, whereby the generator 300 performs power generation.
Since the wave power generator according to the fourth embodiment of the present invention may have the same configuration as the first and second embodiments except for the above-described configuration, a detailed description thereof will be omitted.
As shown in FIG. 11, a wave power generator according to a fifth embodiment of the present invention is formed by combining the configuration of the auxiliary wave-power receiving body 700 of the third embodiment with the configuration of the auxiliary wave-power receiving body 702 of the fourth embodiment.
When the auxiliary wave- power receiving bodies 700 and 702 are additionally installed as described above, the wave-power receiving body 200 and the auxiliary wave- power receiving bodies 700 and 702 may be installed in different ways, thereby making it possible to implement more efficient power generation by easily responding to various changes in waves.
In the third to fifth embodiments, the configurations of the auxiliary wave- power receiving bodies 700 and 702 are added to the configuration of the wave-power receiving body 200 of the second embodiment, but the configurations of the auxiliary wave- power receiving bodies 700 and 702 may also be added to the configuration of the wave-power receiving body 200 of the first embodiment.
As shown in FIGs. 12 and 13, a wave power generator according to a sixth embodiment of the present invention may be provided with a plurality of wave-power receiving bodies 200, and the plurality of wave-power receiving bodies 200 may be disposed in a stepwise arrangement with a space therebetween so as to achieve a predetermined phase difference between forward and rearward movement directions of waves.
For example, the plurality of wave-power receiving bodies 200 may be disposed and installed in a stepwise arrangement such that, if a plurality of imaginary lines are drawn parallel to swells of waves, at least one wave-power receiving body 200 that does not lie on the same imaginary line exits.
Further, the plurality of wave-power receiving bodies 200 may be preferably disposed and installed in a stepwise arrangement in a plan view so that not all of the wave-power receiving bodies 200 come into contact with waves simultaneously (so that wave power does not act on all of the wave-power receiving bodies 200 simultaneously).
As described above, the plurality of wave-power receiving bodies 200 are installed in the stepwise arrangement. Accordingly, when wave power starts to act on the front surface of one wave-power receiving body 200, wave power has already been acting on another wave-power receiving body 200, or wave power starts to act on the rear surface of another wave-power receiving body 200 after the wave power acts on the front surface thereof. That is, wave power acts on the respective wave-power receiving bodies 200 at different times.
In general, when swells of waves are weak, seawater flows toward the shore in a cycle of 7 to 14 seconds, and when swells of waves are strong, seawater flows toward the shore in a cycle of 4 to 6 seconds. Accordingly, there is a resting period during which the swells stop and the direction of wave action becomes reversed when seawater flows toward the shore and the same flows back to the sea. Further, the resting period also occurs when seawater flows toward the sea and the same flows back to the shore.
As described above, the wave-power receiving bodies 200 are disposed in a stepwise arrangement with a space therebetween so as to achieve a predetermined phase difference. In this case, the plurality of wave-power receiving bodies 200 have different positions so as to sequentially meet waves having various periods. Accordingly, when wave power starts to act on one wave-power receiving body 200, wave power starts to act on another wave-power receiving body 200 with a constant time difference therebetween (which is different from the period of the wave), thereby making it possible to continuously apply the wave power to the different wave-power receiving bodies 200 without a resting time. In this manner, power generation may be continuously performed.
In addition, the plurality of support wires 220, the pair of wire support members 260, and the winding drive source 264, which are installed so as to correspond to each of the plurality of wave-power receiving bodies 200, may be configured as one module or one set. After that, one module or one set is installed in the main frame 100 to allow each of the wave-power receiving bodies 200 to be independently moved in the forward-and-rearward direction. In this manner, if necessary, it is possible to change and adjust the phase difference between the wave-power receiving bodies 200 in response to a change in the period of the waves.
The module including the plurality of support wires 220, the pair of wire support members 260, and the winding drive source 264, which are independently installed for each of the plurality of wave-power receiving bodies 200, may be configured to be movable forwards and rearwards using a reciprocating cylinder or a motor.
Since the wave power generator according to the sixth embodiment of the present invention may have the same configuration as the first embodiment except for the above-described configuration, a detailed description thereof will be omitted.
Although preferred embodiments of the wave power generator according to the present invention have been described, the present invention is not limited thereto, and those skilled in the art will appreciate that various modifications, additions, and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims (15)

  1. A wave power generator comprising:
    a main frame having a box shape with an open bottom;
    a wave-power receiving body having a front side and a rear side, wherein each of the front side and the rear side is supported by a plurality of support wires installed at an upper portion of the main frame to enable forward and rearward pendulum movement of the wave-power receiving body, the wave-power receiving body being affected by wave power acting thereon;
    a generator installed on one side of the main frame;
    a drive wire having one end thereof connected to a drive shaft connected to a shaft of a rotor of the generator, and a remaining end thereof connected to the wave-power receiving body;
    a wire guide member installed in the main frame and configured to guide movement of the drive wire; and
    a one-way clutch installed in the drive shaft and configured to function to transmit rotation to the shaft of the rotor of the generator in only one direction.
  2. The wave power generator according to claim 1, wherein the main frame is formed in the box shape having a trapezoidal cross-section with a narrow upper surface, and is formed by connecting a plurality of horizontal rods, a plurality of vertical rods, and a plurality of inclined rods to each other to form a frame structure.
  3. The wave power generator according to claim 1, wherein the wave-power receiving body is formed in a box shape having an open front surface, and has a partition plate installed therein to divide an inside thereof into a plurality of sections, thereby maintaining rigidity thereof and distributing hydraulic pressure acting thereon among the plurality of sections into which the wave-power receiving body is divided.
  4. The wave power generator according to claim 1, wherein the main frame has a pair of wire support members rotatably installed at the upper portion thereof, the pair of wire support members being disposed at positions respectively corresponding to a front surface portion of the wave-power receiving body and a rear surface portion thereof,
    wherein the support wire is fixedly installed in the wire support member, wherein an end of the support wire is wound around the wire support member,
    wherein the pair of wire support members is installed to extend long in a width direction of the wave-power receiving body, wherein the plurality of support wires installed at the front surface portion of the wave-power receiving body are connected to one wire support member, wherein the plurality of support wires installed at the rear surface portion of the wave-power receiving body are connected to the other wire support member.
  5. The wave power generator according to claim 4, wherein the main frame has a winding drive source installed at the upper portion thereof, the winding drive source being connected to the wire support member, wherein the support wire is wound around the wire support member and is unwound therefrom when the wire support member is rotated as necessary, thereby adjusting a height of the wave-power receiving body.
  6. The wave power generator according to claim 1, wherein the wave-power receiving body has a plurality of fixing wires installed along an edge of a front surface portion thereof, wherein ends of the plurality of fixing wires are combined into one so as to be connected to the remaining end of the drive wire, thereby connecting the drive wire to the wave-power receiving body.
  7. The wave power generator according to claim 1, wherein the drive wire has one end thereof formed as a chain, wherein the drive shaft has a sprocket formed therein and engaged with the chain, wherein the chain has a weight installed at an end thereof.
  8. The wave power generator according to claim 1, wherein the main frame has a plurality of leg members at lower ends thereof,
    wherein one of the front and rear leg members, among the plurality of leg members, has a ski plate attached to a lower end thereof, and a remaining leg member has an excavation piece attached to a lower end thereof,
    wherein the leg member, having the excavation piece attached thereto, is rotatably assembled with and installed in the main frame at a location thereof a predetermined distance lower than an upper end thereof,
    wherein the leg member, having the excavation piece attached thereto, has the upper end thereof rotatably connected to a piston of a reciprocating cylinder fixedly installed in the main frame, and
    wherein a lift member is installed in the main frame on a side of the leg member having the excavation piece attached thereto, wherein the lift member adjusts a height thereof.
  9. The wave power generator according to claim 8, wherein the lift member comprises a body fixedly installed in the main frame, a lift cylinder fixedly installed in the body, and an excavation prevention plate attached to an end of a piston of the lift cylinder.
  10. The wave power generator according to claim 1, wherein:
    the wave-power receiving body has one side thereof in a width direction supported by and installed in a support shaft through a bearing bracket so as to be rotatable in a horizontal direction, wherein the support shaft is installed vertically on one side of the main frame, and
    the remaining end of the drive wire is connected to an edge portion of the wave-power receiving body, wherein the edge portion is opposite the one side of the wave-power receiving body, the one side being rotatably supported by the support shaft installed in the mainframe.
  11. The wave power generator according to claim 10, further comprising an auxiliary wave-power receiving body formed in a box shape having a trapezoidal cross-section and an open front surface, wherein the auxiliary wave-power receiving body has a partition plate installed therein to divide an inside thereof into a plurality of sections,
    wherein the auxiliary wave-power receiving body installs a pair of pendulum rods therein, wherein each of the pair of pendulum rods is rotatably supported at a middle point of a corresponding one of opposite sides of the main frame in the width direction, wherein lower ends of the pair of pendulum rods are rotatably connected to respective opposite sides of the auxiliary wave-power receiving body in the width direction,
    wherein upper ends of the pair of pendulum rods are connected to each other by a connection rod to form a "ㄷ" shape, wherein the connection rod is connected to a remaining end of an auxiliary drive wire, wherein the auxiliary drive wire has one end thereof connected to the drive shaft connected to the shaft of the rotor of the generator.
  12. The wave power generator according to claim 11, wherein:
    a long hole, having a long length in a vertical direction, is formed at the lower end of each of the pair of pendulum rods so that the auxiliary wave-power receiving body is movable upwards and downwards, wherein the auxiliary wave-power receiving body is connected to the lower end thereof, wherein the auxiliary wave-power receiving body has coupling protrusions respectively installed on opposite sides thereof, wherein each of the coupling protrusions is coupled to a corresponding one of the long holes so as to be slidably movable therein, and
    the auxiliary wave-power receiving body has a buoyant body installed on an upper surface thereof, the buoyant body being configured to impart buoyancy.
  13. The wave power generator according to claim 10, further comprising an auxiliary wave-power receiving body formed in a box shape having a trapezoidal cross-section and an open front surface, wherein the auxiliary wave-power receiving body has a partition plate installed therein to divide an inside thereof into a plurality of sections, wherein:
    the auxiliary wave-power receiving body has a pair of support rods installed therein, wherein lower ends of the pair of support rods are rotatably connected to respective opposite sides of the main frame in the width direction, wherein upper ends of the pair of support rods are rotatably connected to respective opposite sides of the auxiliary wave-power receiving body in the width direction,
    wherein the auxiliary wave-power receiving body has a shaft protrusion installed in each of the opposite sides thereof in the width direction, wherein the shaft protrusion is rotatably coupled to each of the upper ends of the pair of support rods, and
    the main frame has a pair of drive cylinders installed therein, wherein each of the pair of drive cylinders has a piston rod, wherein an end of the piston rod is rotatably connected to a corresponding one of the upper ends of the pair of support rods, wherein the drive cylinder has a hydraulic line connected thereto so as to rotate the drive shaft connected to the shaft of the rotor of the generator,
    wherein the drive cylinder has an end thereof rotatably installed in an installation rod fixedly installed in the main frame,
    wherein the main frame has a driven cylinder installed on one side thereof,
    wherein the drive cylinder and the driven cylinder are connected to each other by the hydraulic line,
    wherein the driven cylinder has a piston rod, wherein the piston rod is connected to one end of an auxiliary drive wire,
    wherein a remaining end of the auxiliary drive wire is connected to the drive shaft connected to the shaft of the rotor of the generator.
  14. The wave power generator according to claim 1, wherein the wave-power receiving body is provided in a plural number,
    wherein the plurality of wave-power receiving bodies are disposed with a space therebetween so as to have a predetermined phase difference between forward and rearward movement directions of a wave.
  15. The wave power generator according to claim 1, wherein the wave-power receiving body has a forward-and-rearward guide protrusion installed on a bottom surface thereof, wherein the forward-and-rearward guide protrusion is formed to protrude long in a forward-and-rearward movement direction of the wave-power receiving body.
PCT/KR2022/011846 2021-08-26 2022-08-09 Wave power generator WO2023027384A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR1020210113009A KR102353245B1 (en) 2021-08-26 2021-08-26 Electric Generator Using Wave
KR10-2021-0113009 2021-08-26
KR10-2022-0018878 2022-02-14
KR1020220018878A KR20230122344A (en) 2022-02-14 2022-02-14 Electric Generator Using Wave

Publications (1)

Publication Number Publication Date
WO2023027384A1 true WO2023027384A1 (en) 2023-03-02

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PCT/KR2022/011846 WO2023027384A1 (en) 2021-08-26 2022-08-09 Wave power generator

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WO (1) WO2023027384A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002188554A (en) * 2000-12-22 2002-07-05 Masahiro Aoki Power generating device utilizing ocean waves
US20090115192A1 (en) * 2006-01-04 2009-05-07 Morrison Donald R Water wave-based energy generator
WO2012050466A1 (en) * 2010-10-15 2012-04-19 Sea For Life, Lda. System for the production of useful energy from sea waves
US20210040931A1 (en) * 2018-02-07 2021-02-11 The University Of Tokyo Wave power generation system
KR102230135B1 (en) * 2020-03-30 2021-03-19 박상한 Wave power generation apparatus
KR102353245B1 (en) * 2021-08-26 2022-01-18 송기석 Electric Generator Using Wave

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002188554A (en) * 2000-12-22 2002-07-05 Masahiro Aoki Power generating device utilizing ocean waves
US20090115192A1 (en) * 2006-01-04 2009-05-07 Morrison Donald R Water wave-based energy generator
WO2012050466A1 (en) * 2010-10-15 2012-04-19 Sea For Life, Lda. System for the production of useful energy from sea waves
US20210040931A1 (en) * 2018-02-07 2021-02-11 The University Of Tokyo Wave power generation system
KR102230135B1 (en) * 2020-03-30 2021-03-19 박상한 Wave power generation apparatus
KR102353245B1 (en) * 2021-08-26 2022-01-18 송기석 Electric Generator Using Wave

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