WO2016060498A1 - Screen wave power generation device - Google Patents

Abstract

The present invention relates to a screen wave power generation device and, more particularly, to a screen-type wave power generation device using a floating body, which is a movable object, wherein a screen unit, which comprises a shield membrane, is placed beneath the floating body, and a winding unit is placed beneath the screen unit, thereby producing electric power in a more efficient and stable manner. The present invention is advantageous in that (1) the floating power generation is driven in a screen type such that kinetic energy can be efficiently recovered not only from the up/down movement of waves, but also from the leftward/rightward wave pressure of seawater, which acts on screens, thereby enabling large-capacity power generation; (2) the screens are connected in a winding type, and elastic members are introduced thereto, thereby maintaining a predetermined level of tension of the screens in a simple manner, without any separate device or additional costs; (3) dual one-way clutches are placed on both of left and right ends of a rotating shaft such that two large-capacity generators can be installed on a single device, exhibiting high rotating horsepower, thereby enabling highly-efficient energy production; and (4) the device is simple and is operated without power such that the same is environment-friendly and can be easily installed and disassembled.

Description

Screen wave generator

The present invention relates to a screen wave power generation apparatus, and more particularly, to a floating wave power generation system using a floating body, comprising: a screen portion including a blocking film under a floating body, and a winding portion under a screen portion; The present invention relates to a screen-type wave power generator capable of producing electric power more efficiently and stably.

In general, tidal power generators using tidal differences are commonly used among power generation systems developed for the purpose of producing electricity in the sea. However, this method can be used only in places where tidal gaps are big and long construction period. And enormous construction costs and large system uptime constraints, the power generation is inefficient.

The wave power generator is a device that generates power by using the up and down kinetic energy of waves, and is classified into an animal body type, a frequency column type, and a moon wave type according to an operating principle for obtaining energy from wave force.

Frequency-driven wave power generation converts the space change caused by the waves introduced into the water column into the flow of the internal air, enters the induction pipe to generate air flow, and rotates the turbine installed in the induction pipe to obtain electricity. That's the way. When the incident wave is reflected from the front surface of the device, a duplicate wave is formed, and at this time, air flows in the upper nozzle portion of the water surface.

In addition, when the wave wave power generation has a slope in front of the direction of wave propagation and goes over the flying slope by kinetic energy, it is converted into potential energy and stored, and then the stored seawater is stored in the lower part of the reservoir using the water head difference. If it flows, the water turbine installed in the lower part of the passage rotates to generate power.

On the other hand, the wave power generation method of the animal body type is a method of converting the movement of the device into electrical energy by directly transmitting the wave energy to the device using a device designed to react sensitively to the movement of the water surface. For example, a buoy with a pendulum can be floated on the water so that it can swing as the waves strike, so that the pendulum in the buoy can be turned into a rotary motion and the generator can be rotated through a gear. Although the wave energy acts directly on the mechanism, it has a weak point in structural stability in that it must withstand the external force caused by the wave. However, since the wave energy is absorbed directly, it is relatively advantageous in terms of energy conversion efficiency.

In the case of the above-mentioned vibration-type wave power generation and the monthly wave power generation, the wave energy is used only indirectly, so the power generation efficiency is relatively low, and a large space is required for the installation of the structure.

On the other hand, with respect to the above-mentioned "animal body type", more specifically in the floating (wave) power generation apparatus in Korea Patent Publication No. 10-2010-0120012 ("wave power generation system", published on November 12, 2010), 1A shows a wave buoyancy body composed of a surface buoyant body exposed to the surface of the water and moved up and down by waves, a belt winding the belt a1 on a motor generator a2, and a controller. have. However, this is a method of generating power only when the surface buoyancy body (buoy) rises, and consumes power through a separate control device when descending, so that the belt (a1) is wound by the power of the motor (a2), effectively reducing power. There is a problem that cannot be produced.

In addition, the Republic of Korea Patent Publication No. 10-2012-0104880 ("wave power generator with tension control means", 2012.09.24. Publication), as shown in Figure 1b, the auxiliary floating in the sea surface, the main coupled thereto Tension adjusting means for adjusting the tension of the main shaft (b1) provided in the shaft (b1), the weight coupled to the other end of the main shaft (b1), the main body and the main body provided in the middle of the main shaft (b1) ( A wave generator composed of b2) was presented. However, this also provides a separate tension adjusting means (b2) to prevent the tension of the main shaft (b1) to loosen, there is a problem that the power production is inefficient, the entire apparatus is complicated.

In addition, in Republic of Korea Patent No. 10-1049518 ("wave power generator", published on July 8, 2011), the buoyancy buoyant to the sea surface, the power transmission rope (c1), the power transmission rope (c1) coupled thereto is wound up. It has been proposed a wave power generation device consisting of a power transmission means, a power transmission shaft and a generator connected to them to generate power, and a return rope (c2) and a return device (c3) coupled to the power transmission means. This is also connected directly or indirectly to the power transmission rope (c1) to control the return of the power transmission rope according to the lifting and lowering of the buoyancy body according to the movement of the wave, a separate return rope (c2) and the return device (c3) I put it.

However, conventional wave power generation is typically significantly less efficient than photovoltaic power generation and wind power generation, and there are many disadvantages in producing commercial electricity. In particular, the animal-type wave power generation method using buoyancy bodies, like the above-mentioned prior arts, is a method of generating power only by vertical movement of waves using buoyancy bodies floating on the sea surface. It wasn't enough to practice, so it was only small lights that could be used or audible and used as signs for the course.

In addition, the power generation is very low compared to the huge installation cost of structures and devices, so the efficiency is remarkably low, so the wave power generation is still in the test stage at home and abroad. It is indispensable to use a separate device to maintain the tension of the rope at a certain level or to wind the rope when the float descends, which results in a complicated structure, an increase in the manufacturing cost of the facility, and difficulty in controlling the device. Could not effectively collect kinetic energy.

The present invention was devised to solve the above problems, an object of the present invention is to connect the floating body in the form of a screen to effectively collect the wave energy of the left and right wave pressure energy including the wave energy due to the vertical motion of the blue It is possible to perform high-efficiency / large-capacity power generation, and has a winding unit connected to the bottom of the screen, and generates electric power by using the rotational force obtained from the winding unit, so that the screen can be easily and effectively deployed without a separate device. The present invention provides a screen wave power generator capable of producing electric power while intermittent.

In addition, dual one-way clutches and elastic members that provide elasticity to the rotating shaft allow power generation with high horsepower for both directions of rotation and two large-capacity generators in one structure. To provide a wave power generator.

In order to achieve the object as described above, in accordance with an embodiment of the present invention, a power generation apparatus using kinetic energy of waves or sea water, the floating body (10) floating by buoyancy in water; A screen unit 20 connected downward to the bottom of the floating body 10 and provided with a screen-type blocking film 21 to block the movement of seawater in the water; Winding rotary shaft 31 is connected to the bottom of the screen portion 20 by winding (winding) and the winding rotary shaft 31 so that the screen unit 20 is wound or unwinded by the movement of waves or sea water A winding unit 30 including an elastic member 32 to impart elasticity and fixedly installed on a sea bottom; And a generator 41 connected to at least one end of the winding rotation shaft 31 to generate electric power by using an axial rotational force formed while the screen unit 20 is wound or unwound on the winding rotation shaft 31. Provides a screen wave power generating apparatus including a power generation unit 40 provided.

The screen portion 20 is connected to both ends of the bottom surface of the floating body 10, a pair of wires 22 having a lower end wound on the winding shaft 31 so as to be wound or unwound by movement of waves or seawater. ; And a blocking film 21 having both left and right ends joined to the pair of wires 22. It may include.

In this case, a pair of wire bobbins 23 may be provided in an area in which the pair of wires 22 are wound around the winding rotation shaft 31, and the blocking layer 21 is formed on the wire 22. It is formed in a predetermined section on the basis of the direction from the lower side to prevent the winding on the lower end of the predetermined section on the wire 22 in order to prevent the area in which the blocking film 21 is formed is wound on the winding rotation shaft 31. Means 24 may be provided, and the winding preventing means 24 is provided at a lower end of the pair of catching members 24a or the blocking film 21 provided on the pair of wires 22. More preferably, it is a bar 24b.

On the other hand, the winding rotating shaft 31 is a rod formed with a hollow inside, the elastic member 32 is provided in the longitudinal direction in the hollow inside the winding rotating shaft 31, according to the rotation direction of the winding rotating shaft 31 It is preferable that the torsion spring is twisted or loosened, and the generator 41 is provided with a pair so as to be connected to both ends of the winding rotation shaft 31, according to the rotation direction of the winding rotation shaft 31. Only one generator 41 of the pair of generators 41 may be provided with a pair of one-way clutch 42 for transmitting rotational force.

In addition, an inner space is provided to store the winding rotation shaft 31, the elastic member 32, and the power generation unit 40, and the slit 51 for entering and exiting the screen unit 20 includes the winding rotation shaft 31. It may further include a housing 50 provided to be parallel to.

In addition, the yawing portion coupled to the bottom of the winding portion 30 is fixed to the sea bottom surface and rotates the winding portion 30 so that the winding portion 30 is disposed in the normal direction of seawater flow ( 60 may further include, the yawing unit 60, the yawing housing 61 is fixed to the sea bottom surface; An yawing panel (62) provided above the yawing housing (61) and coupled to the bottom of the winding portion (30) to rotate the winding portion (30); A driving motor (63) provided in the yawing housing (61) to transmit rotational power to the yawing panel (62); Yawing sensor 64 for sensing the direction of seawater flow; And a controller (65) provided in the yaw housing (61) and controlling the operation of the driving motor (63) based on the information on the direction of seawater flow collected through the yawing sensor (64). Do.

On the other hand, it may further include an auxiliary float 70 connected to the float 10 to adjust the buoyancy of the float 10, the auxiliary float 70, the float 10 A buoyancy providing material stored in the floating body 10, the auxiliary buoy 71 and an auxiliary buoy 72 in communication with the buoy 10 and the auxiliary buoy 71 via the auxiliary pipe 72. By moving between each other, the buoyancy of the floating body 10 is preferably adjusted.

The screen wave power generator of the present invention as described above, ① by driving a floating (floating) generator in the form of a screen, not only the up and down movement of the wave, but also the kinetic energy according to the left and right wave pressure of the seawater received by the screen It can be recovered, and large capacity can be developed. ② By connecting the screen by winding type and introducing elastic member, it is possible to simply maintain the tension of the screen at a certain level without the need for a separate device or additional cost. ③ The dual one-way clutch is installed at the left and right ends of the rotating shaft, so two high-capacity generators can be installed in one device with high rotational horsepower, which enables high-efficiency energy production. It is easy to dismantle.

1A to 1C are schematic diagrams showing a conventional wave power generator.

2 is a plan view showing a screen wave power generating apparatus according to a preferred embodiment of the present invention.

3 is a schematic view showing a cross-section AA ′ of FIG. 2.

4 is a side view showing a screen wave power generation apparatus according to a preferred embodiment of the present invention.

5 is a side view showing the screen wave power generating apparatus according to a preferred embodiment of the present invention, a schematic diagram showing how the development of the screen unit 20 changes as the height of the sea surface is changed by the blue.

6 is a side view showing the screen wave power generation apparatus according to a preferred embodiment of the present invention, a schematic diagram showing the movement of the floating body 10 and the screen unit 20 due to the wave and wave pressure.

7 is a perspective view showing the screen portion 20 of the screen wave force in accordance with another embodiment of the present invention to move up and down.

8 is a side view of the screen wave power generating apparatus provided with the yaw portion 60 in accordance with a preferred embodiment, Figure 9 is a plan view showing a state of rotation by the yaw portion 60.

10 is a schematic diagram showing a state in which the auxiliary floating body 70 of the screen wave power generation apparatus is operated according to another embodiment of the present invention.

[Description of the code]

S: wave power generator of the present invention

10: floating body 20: screen portion

21: barrier 22: wire

23: wire bobbin 24: winding prevention means

24a: locking member 24b: locking bar

30: winding part 31: winding rotation axis

32: elastic member 40: power generation unit

41: generator 42: one-way clutch

50 housing 51 slit

60: yawing unit 61: yawing housing

62: yawing panel 63: drive motor

64: yawing sensor 65: control unit

66: bearing 70: auxiliary float

71: auxiliary buoy 72: auxiliary body

80: fixing member 81: lower anchor

82: balance bar

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to ordinary or dictionary meanings, but should be construed as meanings and concepts consistent with the technical spirit of the present invention.

Throughout this specification, when a member is located "on" another member, this includes not only when one member is in contact with another member but also when another member exists between the two members.

Throughout this specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless otherwise stated.

Terms such as "first" and "second" are intended to distinguish one component from another component, and the scope of rights should not be limited by these terms. For example, the first component may be named the second component, and similarly, the second component may also be named the first component.

The present invention provides a wave power generator for converting the kinetic energy of the waves or seawater into electrical energy, and more specifically, a floating wave power generator including a floating body 10 to be exposed on the sea surface. do.

2 is a plan view of the wave power generator S according to an embodiment of the present invention, FIG. 3 is a schematic view showing a cross-section AA ′ in FIG. 2, and FIG. 4 is a side view of the wave power generator S. As shown in FIG.

The present invention, unlike the existing floating wave power generation device is connected to the screen portion 20 is provided with a shielding membrane 21 is connected downward to the bottom of the floating body 10 to expand in the water, and is wound on the bottom surface Characterized in that it is a wave power generator including a winding portion 30 is fixedly installed.

Conventional wave power generation device was generally a method of transmitting power by connecting a linear belt between the floating body and the power generation device, the present invention transmits power through the blocking film 21 having the form of a screen (screen), Compared with the conventional wave power generator, the kinetic energy of the seawater can be effectively recovered up to the wave pressure energy of the seawater having the left and right directions in addition to the vertical movement of the wave.

More specifically, in addition to the kinetic energy generated as the floating body moves up and down due to the displacement of the wave generated by the waves, the kinetic energy generated by the flow of seawater by the sea current under the sea level is also recovered through the blocking film 21. It is possible to produce a large amount of wave power, which is several times to several tens of times that of a conventional belt type wave power generator.

In addition, the present invention includes a power generation unit 40 for generating power by recovering rotational force through the winding unit 30 and the winding unit 30 connected to the bottom of the screen unit 20.

The winding unit 30 is connected to the bottom of the screen unit 20 by winding, so that the screen unit 20 is wound or unwound by the movement of waves or sea water, and sinks to the sea floor by its own weight. The shielding film 21 is spread out in the water, and the power generation unit 40 produces electric power by using the rotational force formed while the screen unit 20 is wound or unwound from the winding unit 30.

Hereinafter, each component of the screen wave power generator S of the present invention will be described in detail.

First, the screen unit 20 is connected downward to the bottom of the floating body 10 and is provided with a blocking film 21 for recovering wave pressure energy of seawater by blocking seawater movement in a predetermined region. The screen portion 20 may be provided with the entire blocking area 21 from the floating body 10 to the winding part 30, so that the blocking film 21 itself may be wound around the winding part 30. In addition, as shown in FIG. 3, the barrier layer 21 may be provided only in a partial region.

In the latter case, a pair of wires 22 connected to both ends of the bottom surface of the floating body 10 and wound or wound around the winding unit 30 and a shielding film 21 coupled to both left and right ends thereof are formed. Can be taken. As a result, unlike the former, the blocking film 21 itself takes the form of winding the wire 22 instead of being wound on the winding rotation shaft 31, so that unnecessary device defects due to mechanical friction during continuous winding or unwinding during power generation are obtained. It is possible to recover the kinetic energy of the seawater in the form of electrical energy more effectively, and the structure of the device is simpler, which is easy to manufacture / install or maintain / repair.

At this time, a pair of wire bobbins 23 are provided in an area in which the pair of wires 22 are wound on the winding rotation shaft 31 to induce the winding of the wires 22 to be more easily performed. The mechanical load on the winding rotating shaft 31 can be reduced.

In addition, in order to prevent the screen unit 20 from being wound up to the area provided with the blocking film 21 while preventing the above-mentioned problems from occurring, the screen 20 is wound at the bottom of the section on the wire 22 to which the blocking film 21 is coupled. Winding preventing means 24 may be provided, and in a preferred embodiment, a pair of catching members 24a provided on the wire 22 or a catching bar 24b provided in the width direction at the bottom of the blocking film 21. Can be mentioned. The winding preventing means 24 may be directly caught by the winding rotation shaft 31 or the wire bobbin 23 formed thereon so as not to wind up the region of the blocking film 21, as will be described later with reference to FIG. 7. This role can be performed by being caught by the slit 51 formed in the housing 50.

Next, the winding unit 30 is wound around the bottom end of the screen unit 20 is wound around the winding rotation shaft to intercept the development of the screen unit 20 according to the lifting and lowering of the floating body 10 through the axial rotation It is preferable to include the 31 and the elastic member 32 which gives rotational elasticity to this.

The end of the screen unit 20 is mounted on the winding rotation shaft 31 and is configured to be wound in the longitudinal direction. In addition, the elastic member 32 is connected to the winding rotating shaft 31 to impart rotational elasticity to the rotating shaft.

The elastic member 32 effectively provides the rotational elasticity to the winding rotation shaft 31, the extent to which the screen portion 20 is unfolded by the weight of the winding portion 30 at the time of initial installation, or the lifting and lowering of the floating body 10. As a function of controlling the degree of development of the screen unit 20 to a certain elasticity.

Specifically, it is preferable that the winding rotation shaft 31 is a rod having a hollow formed therein, and the elastic member 32 is a torsion spring provided in the longitudinal direction in the inner hollow of the winding rotation shaft 31. Therefore, when the screen unit 20 is released through the kinetic energy of the sea water, the torsion spring is twisted to form a constant restoring force, and the screen unit 20 is wound around the winding rotation shaft 31 by using the formed elastic restoring force. At the same time it produces electrical energy. More preferably, in order to stably mount the torsion spring, a rod extending in the longitudinal direction may be additionally provided in the inner hollow of the torsion spring.

Next, the power generation unit 40 is connected to at least one end of the winding rotation shaft 31 to recover the rotational force generated in the winding rotation shaft 31 to generate power from the power generation unit 40 provided with the generator 41. To produce. In this case, the power generated by the power generation unit 40 may be transmitted to a nearby power plant or current collector by a wired method through a submarine cable or the like, and may also use a wireless transmission and reception facility such as a wireless charging method to transmit power generated wirelessly. have.

Hereinafter, a mechanism of generating power through the power generation unit 40 will be described in detail.

As shown in FIGS. 5 and 6, the left and right movements due to the up and down motion of the blue wave and the wave pressure of the seawater are transmitted to the floating body 10 and the screen part 20, so that the screen part 20 is wound up or unwound. A rotary motion of the rotary shaft 31 is generated, and a pair provided at both ends along the direction of rotation through a one-way clutch 42 provided between the winding rotary shaft 31 and the generator 41. Only one of the generators 41 will transmit the rotational force.

In detail, when the screen unit 20 moves away from the winding unit 30, the winding shaft 30 is rotated in one direction while the screen unit 20 having the length is longer than the depth of the installation point. At this time, the rotational force is transmitted to only one one-way clutch 42 corresponding to the corresponding rotation direction among the one-way clutches 42 provided at both sides, and in one generator 41 mechanically connected to the one-way clutch 42. Power production takes place. In addition, the elastic restoring force is formed while the torsion spring provided in the inner hollow is twisted by the rotation of the winding rotation shaft 31.

Thereafter, while the position of the screen unit 20 is restored by the elastic restoring force formed through the elastic member 32, the screen unit 20 is wound on the winding rotation shaft 31 again so that the winding rotation shaft 31 rotates in the other direction. do. At this time, the rotational force is transmitted only to the other one-way clutch 42 corresponding to the corresponding rotation direction, and the one-way clutch 42 of the one is idling. As a result, the rotational force is transmitted only to the generator 41 of the other mechanically connected to the one-way clutch 42 of the other, thereby producing power.

This allows the movement of seawater in all directions up, down, left, and right, and two large-capacity generators can be installed in one structure, and non-power-friendly, eco-friendly power generation is possible by using the kinetic energy of the seawater and the elastic force of the elastic member 32. In order to maintain a constant tension, there is no need for a separate configuration, so the structure of the device is simple and the manufacturing and maintenance is easy.

On the other hand, the winding rotation shaft 31, the elastic member 32 and the housing 50 to surround the outside of the power generation unit 40 may be further included. The housing 50 may serve as an outer case of the undercarriage of the power generator S, and the elastic member 32 may block the inflow of seawater or other foreign substances to many mechanical / electrical components included in the undercarriage. It can also play a role in preventing corrosion due to salinity and malfunction due to inflow of foreign substances. In addition, by placing the slit 51 on the upper surface in a direction parallel to the winding rotation shaft 31, as shown in Figure 7 to prevent the winding of the film 21 or the wire 22 in the process of winding out The means 24 can be hooked up.

In addition, by filling a weight body such as a weight weight in the remaining space inside the housing 50 to increase the self-weight of the lower structure of the power generation apparatus S, it is possible to give structural stability and facilitate installation.

Since the housing 50 is also directly exposed to sea level, the housing 50 should be made of a material having strong chemical resistance against corrosion and strong physical properties against other mechanical shocks such as the flow of sea water, and preferred embodiments include stainless steel.

On the other hand, the installation method of the present invention can be divided into a fixed type and a rotating type. The fixed type is installed near the coast, so that the wave flows in the normal direction with respect to the shoreline, the screen unit 20 can receive the wave energy of the wave constantly. On the other hand, when installing the power generation device (S) of the present invention in the outer sea (outside region of Pabong line, which is a point where the wave is broken in a constant direction in the direction of the coastline), the current or the flow of the wave depending on the timing or installation location Since it is changed, it should be installed in a rotating manner.

Specifically, the present invention is coupled to the bottom of the winding unit 30 in accordance with a preferred embodiment is fixed to the sea bottom, yawing (rotating) to rotate so that the winding unit 30 is disposed in the normal direction of the seawater flow It can be installed in a rotatable manner with 60. Yawing unit 60 is a technology applied to the current wind power generation, by measuring the direction of the wind blowing in three dimensions to calculate the optimum wind angle and to apply the facility to rotate the rotor blade body at the calculated optimum angle to be.

8 and 9, the yaw portion 60 of the present invention is provided on the yawing housing 61 and the upper portion thereof fixedly installed on the sea bottom and is coupled to the bottom of the winding portion 30, the winding portion 30 It is preferable that it consists of the yawing panel 62 which rotates. Since the yawing housing 61 is a fixed form of the member and the yawing panel 62 is a rotatable member, the yawing housing 61 must be connected between the yawing housing 61 and the yawing panel 62 through at least one bearing 66. . In addition, by placing a yawing sensor 64 (not shown) in a predetermined region in the power generator S to detect a direction in which seawater flows in real time, and is provided in the yawing housing 61 based on the collected information. By intermittent operation of the drive motor 63 which transmits rotational power to the 62 through the control unit 65 (not shown), the winding unit 30 is disposed in the normal direction of the seawater flow direction in real time. 30) can be rotated. Thereby, the kinetic energy which seawater has can be collect | recovered efficiently.

The present invention may include a fixing member 80 for the stable installation of the lower structure of the wave power generator (S) of the present invention according to another preferred embodiment. Specifically, referring to FIGS. 4 to 6 and 8, the bottom of the winding unit 30 in order not to be separated from the installation point of the wave power generator S of the present invention by the flow of seawater or various marine life. Alternatively, at least one lower anchor 81 may be provided at the bottom of the yawing portion 60 to insert the other side into the sea bottom. Anchor means in various ways can be employed therein and preferred embodiments include anchors in the form of wedge piles. A plurality of lower anchors 81 may be installed, and the lower anchor 81 may be directly installed at the bottom of the winding unit 30 or the yawing unit 60 and may be inserted into the sea bottom, but the winding unit 30 or the yawing unit ( 60) A method may be adopted in which a plurality of dogs are inserted into the sea bottom by being separated by a predetermined distance by connecting the predetermined area with a rope or the like. In addition, at least one balance bar 82 may be provided at the bottom of the winding part 30 in the normal direction of the winding part 30 to provide a sense of stability in the normal direction.

Basically, the wave power generator (S) of the present invention can minimize external force damage due to typhoons or tsunamis because the power generation facility is installed at the bottom of the sea, but floats near the sea surface 10 and descends to the bottom thereof. In order to prevent external force breakage of the connected screen unit 20, the present invention may further include an auxiliary float 70 for adjusting the buoyancy of the float 10 according to another preferred embodiment. have. Hereinafter, this will be described in detail with reference to FIG. 10.

The auxiliary floating body 70 is configured to flexibly cope with various marine situations by controlling the buoyancy of the floating body 10 in a rapidly changing marine situation such as a typhoon or high wave invasion, thereby preventing damage or loss of the device. . Particularly, in the case of a floating wave power generator, since the device directly absorbs wave energy, it is vulnerable to such rapid changes in the marine environment, and a countermeasure should be prepared.

More specifically, the auxiliary floating body 70 includes an auxiliary buoy 71 and an auxiliary tube 72 communicating with the floating body 10, and the buoyancy providing material stored in the floating body 10 is assisted. By moving between the floating body 10 and the auxiliary buoy 71 through the tube 72, the buoyancy of the floating body 10 is characterized in that it is controlled.

The floating body 10 stores buoyancy providing material therein in order to have a certain level of buoyancy and float on the sea surface. It may be a gas such as air, and various fluids having a lower density than seawater may be borrowed as necessary.

When a typhoon or high waves invade the area where the wave power generator S of the present invention is installed, the buoyancy providing material stored in the floating body 10 is partially moved to the auxiliary buoy 71 through the auxiliary tube 72. . As a result, the floating body 10 whose buoyancy is reduced is lowered below the sea level by the winding unit 30, and the buoyancy of the auxiliary buoy 71 and the rotational elastic force of the winding unit 30 are balanced. Fluid 10 is positioned. On the other hand, by mounting a crest meter in a predetermined area of the floating body 10 can perform this mechanism when a situation exceeding a predetermined maximum dangerous crest is detected.

As such, by lowering the floating body 10 in water and reducing the unfolded area of the screen unit 20, it is possible to prevent damage or loss of the device due to typhoons or high waves, and later through the auxiliary tube 72 The buoyancy providing material in the auxiliary buoy 71 can be easily returned to the original installation state by injecting the buoyancy providing material back to the floating body 10 side.

As a result, when wave power generation is difficult due to a deterioration of a typhoon or a meteorological situation, the floating body 10 is lowered below the sea level by the automatic control system as described above, and after the typhoon or the like has passed, it is allowed to rise again to the sea level. It can cope effectively with the condition and can prevent damage to the wave power generator.

The present invention is not limited to the above-described specific embodiments and descriptions, and various modifications can be made by those skilled in the art without departing from the gist of the present invention claimed in the claims. Such variations are within the protection scope of the present invention.

Claims (12)

1. In the power generator using the kinetic energy of waves and sea water,

   Floating body (10) floating in the water by buoyancy;

   A screen unit 20 connected downward to the bottom of the floating body 10 and provided with a screen-type blocking film 21 to block the movement of seawater in the water;

   Winding rotary shaft 31 is connected to the bottom of the screen portion 20 by winding (winding) and the winding rotary shaft 31 so that the screen unit 20 is wound or unwinded by the movement of waves or sea water A winding unit 30 including an elastic member 32 to impart elasticity and fixedly installed on a sea bottom; And

   The generator 41 is connected to at least one end of the winding rotation shaft 31 to generate electric power using an axial rotational force that is formed while the screen unit 20 is wound or unwound on the winding rotation shaft 31. Being developed part 40;

   Screen wave power generation apparatus comprising a.
2. The method of claim 1,

   The screen unit 20,

   A pair of wires 22 connected to both ends of the bottom surface of the floating body 10 and having a lower end wound on the winding rotation shaft 31 so as to be wound or unwound by a movement of waves or seawater; And

   Blocking membrane 21 is coupled to both ends of the left and right ends of the pair of wires 22;

   Screen wave power generation apparatus comprising a.
3. The method of claim 2,

   And a pair of wire bobbins (23) are provided in an area in which the pair of wires (22) are wound around the winding rotation shaft (31).
4. The method of claim 2,

   The blocking film 21 is formed in a predetermined section on the basis of the direction from the top to the bottom of the wire 22, so that the area in which the blocking film 21 is formed is prevented from being wound around the winding rotation shaft 31. Screen wave power generation apparatus, characterized in that the winding prevention means 24 is provided at the lower end of the predetermined section on the wire (22).
5. The method of claim 4, wherein

   The winding preventing means 24 is a screen, characterized in that the pair of locking members 24a provided on the pair of wires 22 or the locking bar 24b provided at the lower end of the barrier film 21. Wave power generator.
6. The method of claim 1,

   The winding rotating shaft 31 is a rod formed hollow inside,

   The elastic member 32 is provided with a longitudinal direction in the hollow inside the winding rotation shaft 31, the screen wave force, characterized in that the torsion spring is twisted or released in accordance with the rotation direction of the winding rotation shaft (31) Power generation device.
7. The method of claim 1,

   The generator 41 is provided with a pair to be connected to both ends of the winding shaft 31,

   According to the rotational direction of the winding shaft 31 is provided with a pair of one-way clutch (42) for transmitting a rotational force to only one generator 41 of the pair of generators 41 Screen wave power generator characterized in that.
8. The method of claim 1,

   An inner space is provided to store the winding rotation shaft 31, the elastic member 32, and the power generation unit 40, and a slit 51 for entering and exiting the screen unit 20 is parallel to the winding rotation shaft 31. A housing 50 which is provided to;

   Screen wave power generation apparatus comprising a further.
9. The method of claim 1,

   Yawing portion 60 is coupled to the bottom of the winding portion 30 is fixed to the sea bottom, and rotates the winding portion 30 so that the winding portion 30 is disposed in the normal direction of seawater flow. ;

   Screen wave power generation apparatus further comprising a.
10. The method of claim 9,

    The yawing unit 60,

    Yawing housing 61 is fixedly installed on the sea bottom;

    An yawing panel (62) provided above the yawing housing (61) and coupled to the bottom of the winding portion (30) to rotate the winding portion (30);

    A driving motor (63) provided in the yawing housing (61) to transmit rotational power to the yawing panel (62);

    Yawing sensor 64 for sensing the direction of seawater flow; And

    A control unit (65) provided in the yawing housing (61) for intermittent operation of the driving motor (63) based on information on the direction of seawater flow collected through the yawing sensor (64);

    Screen wave power generation apparatus comprising a.
11. The method of claim 1,

    Screen wave power generation apparatus further comprises an auxiliary float (70) connected to the float (10) to adjust the buoyancy of the float (10).
12. The method of claim 11,

    The auxiliary floating body 70,

    An auxiliary buoy 71 and an auxiliary tube 72 in communication with the float 10,

    The buoyancy providing material stored in the floating body 10 is moved between the floating body 10 and the auxiliary buoy 71 through the auxiliary pipe 72, thereby adjusting the buoyancy of the floating body 10. Screen wave power generator characterized in that.

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