JP2013189963A - Floating body for flap type gyro wave power generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase in tilt angle of a floating body to an inclination angle of a sea surface or more, and to efficiently convert a water level variation of the sea surface into tilting movement of the floating body.SOLUTION: A floating body 11 for a flap type gyro wave power generation device includes: an underwater part floating body 12 tension-moored by an anchor 16a through a tension-mooring rope 15a and restricted in motion in the vertical direction; and a flap type floating body 13 mounted with the gyro wave power generation device. The flap type floating body 13 is rotatably pin-coupled to the underwater part floating body 12 at a pin-coupling part 14, and makes the tilting movement to the water level variation of the sea surface. A power generation efficiency of the gyro wave power generation device is enhanced. Since restoring movement by tilting of the floating body is also promoted, effect as a wave dissipating device on waves is also enhanced by converting energy of the waves into restoring force.

Description

  The present invention relates to a floating body for a gyro wave power generator that can be used, for example, at sea and can also be used as a wave absorber.

  Wave power generation is one of the promising power generation methods in Japan surrounded by the sea. Some wave power generation systems temporarily convert the energy from waves into a flow of air or the like to rotate the turbine, but turbine-type devices that use such fluids are capable of generating waves with high efficiency. Since conditions such as size are limited, the apparatus becomes large and not economical in order to increase efficiency.

  Therefore, in recent years, as a device that does not use a fluid, for example, a floating body, a gyro supported by the floating body, and a generator connected to the gimbal shaft of the gyro via a speed increasing means are provided. There has been proposed a gyro-type wave power generation device that drives a generator by rotating a gyro gimbal by swinging.

  This gyro-type device generates power by converting the swing of the floating body due to waves into the rotational energy of the gyro gimbal, so that the floating body swings greatly due to the waves, and the tilt angle of the floating body relative to the horizontal plane is as large as possible. Is required. For example, in Patent Document 1, a gyroscope having at least one vertical gimbal shaft is disposed in a cylindrical device housing, and a donut-shaped floating body in which the device housing is inserted and fixed in an inner cylinder portion is disposed on the sea surface. A structure for floating in the air is disclosed.

  However, since the floating body proposed in Patent Document 1 is a floating surface type floating body that floats following the gradient of the sea surface, generally, the inclination angle of the floating body does not become larger than the gradient of the sea surface. Therefore, when such a sea surface floating type floating body is used, there is a limit to the amount of power generated.

  In addition, such a floating type floating body cannot effectively use the sea level fluctuation, particularly when the wave wavelength is longer than the floating body length, and the floating body follows the wave and its wave height is small. In this case, the vertical pitching of the floating body coupled with the vertical swinging of the floating body is reduced, and the tilting motion about the center of gravity of the floating body is reduced.

  As described above, when the inclination angle θ of the floating body is reduced, the restoring force (W × GMsin θ) for returning the floating body to the original state when the floating body is inclined is also reduced. That is, when the tilting motion of the floating body is small, the restoring force of the floating body does not act effectively, and the wave energy is converted into the restoring force and does not dissipate, so that the incident wave passes through the floating body as it is. For this reason, when the tilting motion of the floating body is small, the wave quenching effect expected as a secondary effect of the floating body is inevitably small.

JP 2005-207332 A

  The problem to be solved by the present invention is that the conventional floating body for a gyro wave power generator does not have an inclination angle of the floating body that is substantially larger than the gradient of the sea surface, and the water level fluctuation of the sea surface is efficient for the inclination motion of the floating body. Since the power generation amount of the wave power generation device is limited, the wave-extinguishing effect is small.

In order to achieve the purpose of the floating body for the flap type gyro wave power generator of the present invention to efficiently convert the sea level fluctuations to the tilting motion of the floating body to increase the power generation efficiency and also the wave-dissipating effect.
A submarine floating body moored in tension and restrained in vertical motion,
It consists of a flap type floating body equipped with a gyro wave power generator,
The flap type floating body is pin-coupled to the underwater floating body so as to be rotatable, and the main feature is that the flap type floating body is inclined with respect to the sea level fluctuation.

  According to the present invention, since the underwater floating body tensioned and moored by a sinker or the like is restrained in the vertical direction, the flap type floating body pin-coupled to the underwater floating body is also restrained in the vertical direction. The

  Therefore, the movement mode of the flap type floating body is only a rotary movement that rotates around the position where it is pin-coupled with the underwater floating body, so that the sea level fluctuation is efficiently converted into the inclined movement of the flap type floating body. .

  The floating body for a flap-type gyro wave power generator of the present invention is a submerged floating body that is tension-tethered and restrained to move in the vertical direction, and is rotatably pin-coupled to the floating submerged body, so The flap type floating body on which the gyro wave power generator is mounted has a structure that performs a tilting movement that rotates around a position that is pin-coupled to the underwater floating body. Become.

  Therefore, according to the configuration of the present invention, the sea level fluctuation can be efficiently converted into the floating motion of the floating body, and the inclination angle of the flap type floating body becomes larger than the slope of the sea surface. The power generation efficiency of the device can be increased. In addition, since the restoring movement due to the inclination of the floating body is promoted, the energy of the wave is converted into the restoring force, so that the effect as a wave extinguishing device for the wave is enhanced.

It is a figure which shows the whole structure which looked at the floating body for flap type gyro wave power generation devices of this invention from the direction of the side surface. It is an enlarged view of an underwater part floating body and a flap type floating body. It is a figure which shows an example of the shape of the top part of a flap type floating body, (a) is a figure at the time of making it square, (b) is a figure at the time of making it circular. It is the figure which looked at the floating body for flap type gyro-type wave power generators of the present invention which pin-coupled a plurality of flap type floating bodies to one undersea floating body from the direction of a plane. It is the figure which looked at the floating body for flap type gyro wave power generators of Drawing 4 from the direction of the front.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to FIGS.

  FIG. 1 is a diagram for explaining the overall configuration of a floating body 11 for a flap type gyro wave power generator according to this embodiment. Reference numeral 12 denotes an underwater floating body tensioned and moored by a sinker 16a placed on the seabed by a tension mooring line 15a stretched in the vertical direction.

  The underwater floating body 12 is tensioned and moored in the vertical direction by the tension mooring line 15a and the sinker 16a, and the vertical movement is restricted by utilizing the buoyancy of the underwater floating body 12 itself. The left and right mooring lines 15b are moored with the left and right sinkers 16b, respectively, and mainly restrain the horizontal movement of the underwater floating body 12. X represents the sea surface and Y represents the sea bottom.

  Reference numeral 13 denotes a flap type floating body on which a gyro wave power generator is mounted. The flap type floating body 13 is coupled to the underwater floating body 12 by a pin so as to be rotatable in both directions indicated by an arrow A of the pin coupling portion 14, and tilts with respect to the sea level fluctuation. be able to.

  In the present embodiment, the submerged floating body 12 and the flap type floating body 13 are made of steel, and a necessary buoyancy is obtained by adopting a hollow structure.

  FIG. 2 is an enlarged view of the underwater floating body 12 and the flap type floating body 12. As shown in FIG. 2, the flap type floating body 13 is pinned to the underwater floating body 12 whose vertical movement is restrained by the tension mooring line 15a and whose horizontal movement is mainly restricted by the mooring line 15b. At the position of the coupling portion 14, the pins are coupled so as to be rotatable in the wave traveling direction (the direction indicated by the arrow B) and in the opposite direction.

  Here, since the underwater floating body 12 tensioned and moored by the tension mooring line 15a is restrained in the vertical direction, the vertical movement of the flap type floating body 13 that is pin-coupled to the pin coupling portion 14 of the underwater floating body 12 Will also be restrained.

  Therefore, according to the configuration of the present invention, the flap type floating body 13 performs only the tilting motion with respect to the sea level fluctuation or the sea surface tilt caused by the waves, so that the energy of the waves is efficiently used for the tilting motion of the flap type floating body 13. Can be converted well.

  Further, as shown in FIG. 2, by making the traveling direction of the wave coincide with the rotation direction of the flap type floating body 13, the kinetic energy in the horizontal direction of the wave can be effectively used for the tilting movement of the flap type floating body 13.

  Therefore, since the floating body 11 for wave type power generation of the flap type gyro according to the present invention can efficiently convert wave energy into the inclined motion of the flap type floating body 13, for example, compared to a conventional floating body of the sea surface floating type, the flap type floating body The power generation efficiency of the gyro wave power generation device mounted on 13 is improved.

  Further, the flap type floating body 13 of the present embodiment includes a base portion 13a that is pin-coupled to the underwater floating body 12, and a top portion 13b that has a wider shape toward the tip and has a larger drainage volume than the base portion 13a. Therefore, since the flap type floating body 13 has a structure with higher buoyancy as the term portion 13b is closer to the tip, the flap type floating body 13 can easily follow the sea level fluctuation. In FIG. 2, only the flap type floating body 13 inclined leftward toward the paper surface is illustrated by an imaginary line, but the flap type floating body 13 is similarly inclined rightward toward the paper surface.

  FIG. 3 is a diagram showing the shape of the top portion 13b of the flap type floating body 13, where (a) is a prismatic shape and (b) is a cylindrical shape. Reference numeral 17 denotes a gyro wave power generator, and in particular, a cymbal that is rotated by a wave-like swing, a gimbal shaft that is the center of rotation of the cymbal, a gimbal bearing base that supports the cymbal shaft, and a wheel support shaft that rotates. The main driving unit such as a flywheel is disposed in the top portion 13b which is far from the pin coupling portion 14 and has a large moment of tilting motion. These are merely examples, and the shape and internal structure of the flap type floating body 13 are not particularly limited in the present invention.

  FIG. 4 shows a floating body for a flap-type gyro wave power generator according to the present invention in which a plurality of flap-type floating bodies 53a, 53b, 53c, 53d, and 53e are pivotally coupled to one underwater floating body 52. It is the figure which looked at 51 from the direction of the plane.

  As shown in FIG. 4, by continuously arranging a plurality of flap-type floating bodies 53a to 53e on the underwater floating body 52, the gyro wave power generators respectively mounted on the flap-type floating bodies 53a to 53e are densely arranged, A wave power plant can be constructed. In this case, the electric power obtained by each power generator may be accumulated by providing an intermediate buoy in the middle of the process until it is transmitted to the land via the submarine cable, or the cable is directly connected from the flap type floating bodies 53a to 53e. It may be transmitted to land via and accumulated on land. Note that an arrow C in FIG. 4 indicates the traveling direction of the waves.

  FIG. 5 is a view of the flap type gyro wave power generator floating body 51 of FIG. 4 as viewed from the front. Since the flap type floating bodies 53 a to 53 e are pin-coupled by the underwater floating body 52 and the pin coupling portion 54, the tension mooring lines 55 a, the mooring lines 55 b, and the anchors 56 a and 56 b depend on the number of the flap type floating bodies 13. There is no need to provide it.

  That is, since the tension mooring line 55a and the mooring line 55b need only moor the underwater floating body 52, the cost required for the mooring line can be reduced by adopting the configuration of the present embodiment.

  Further, since the flap type floating bodies 53a to 53e of the present invention have a high wave-dissipating effect against waves, a plurality of flap type floating bodies 53a to 53e are arranged in a direction intersecting with the traveling direction of the waves as shown in FIGS. By doing so, it can also serve as a floating breakwater.

  Further, the number of underwater floating bodies 52 is not limited to one, and a plurality of them may be arranged in parallel. In that case, since the flap type floating bodies 53a to 53e do not interfere with each other, it is more effective to arrange the underwater floating body 52 so that the tops of the flap type floating bodies 53a to 53e do not overlap with the traveling direction of the waves. good.

  In addition, you may provide the work place 58 which can be used as an electric power accumulation | storage equipment or the transfer equipment from the ship at the time of a maintenance work at the edge part of the underwater floating body 52. FIG.

  As described above, the floating body for the flap type gyro wave power generation device of the present invention can efficiently convert the sea level fluctuation into the floating motion of the floating body, and the inclination angle of the flap type floating body is greater than the slope of the sea surface. Therefore, the power generation efficiency of the gyro wave power generator is increased. Moreover, since the restoring movement by the inclination of the floating body is also promoted, the effect as a wave extinguishing device against waves is enhanced.

  The present invention is not limited to the above-described embodiments, and it goes without saying that the embodiments may be changed as appropriate within the scope of the technical idea described in each claim.

  For example, in the embodiment of FIG. 1, an example in which the underwater floating body 12 is moored by the tension mooring line 15 a and the mooring line 15 b is disclosed, but a mooring dolphin may be used when the water depth is shallow.

  In the embodiment of FIG. 1, an example in which the steel underwater floating body 12 and the flap type floating body 13 are used is disclosed, but the material of the floating body is not limited thereto. For example, a resin excellent in weather resistance, fiber reinforced plastic (FRP), or the like may be used.

DESCRIPTION OF SYMBOLS 11 Floating body for flap type gyro wave power generator 12 Underwater part floating body 13 Flap type floating body 13a Base part 13b Top part 14 Pin joint part 15a Tension mooring line 15b Mooring line 16a Sinker 16b Sinker 17 Gyro type wave power generation apparatus 58

Claims (5)

A submarine floating body moored in tension and restrained in vertical motion,
It consists of a flap type floating body equipped with a gyro wave power generator,
The flap-type floating body for a flap-type gyro wave power generation apparatus, wherein the flap-type floating body is rotatably pin-coupled to the underwater floating body and tilts with respect to a sea level fluctuation.   2. The flap type floating body includes a base portion that is pin-coupled to the underwater floating body, and a top portion that has a wider shape toward the tip and has a larger drainage volume than the base portion. The floating body for a flap type gyro wave power generator as described.   The floating body for a flap-type gyro wave power generator according to claim 1 or 2, wherein a plurality of the flap-type floating bodies are pin-coupled to one of the subsea floating bodies.   4. The floating body for a flap-type gyro wave power generator according to claim 3, wherein the floating body has a function as a floating breakwater by arranging a plurality of the flap-type floating bodies in a direction crossing a wave traveling direction. 5. .   5. The flap type gyro wave according to claim 3, wherein a work place that can be used as a power accumulation facility or a transfer facility from a ship at the time of maintenance work is provided at an end of the underwater floating body. Floating body for power generator.

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