JP4613649B2 - Gravitational wave power generator - Google Patents

Description

    The present invention provides a bearing in a buoyant body that receives a wave of sea waves (swells) in a sea area having a current such as a sea current and a tidal current, and a heavy mass with a rotating shaft (shaft) is fitted into the buoyant body. By mooring to the anchor installed in the sea, the reversing motion of the rotating shaft part is converted into the normal rotation motion by the one-way clutch or ratchet mechanism, and the wave energy, gravity energy and water current energy of the sea area are combined. The present invention relates to a gravity wave power generation device that can extract natural energy.

There is no natural energy power generation device that combines waves, gravity, and water currents, and ocean current power generation and wave power generation are referred to. Other natural energy power generation devices include solar heat, wind power, hydropower, and geothermal.
1. An ocean current power generation apparatus that converts ocean water flow into electric power by installing a water wheel under a buoyant body disposed on the ocean (see, for example, Patent Document 1).

2. A wave power generator that ties a rope to a floating body floating on the sea, moves a weight up and down via a pulley, operates a compression pump, and rotates a turbine generator to generate power (see, for example, Patent Document 2).
In addition to the above-described wave power generation device, there is also a wave power generation device that generates upper and lower airflows by wave undulations and rotates them against turbine blades.

JP 2004-68638 A JP 2004-211607 A

However, the conventional techniques described in Patent Documents 1 and 2 have the following problems.
There are mainly ocean currents and tidal currents, and it is said that the tidal current is about twice as fast as the ocean current. However, power is generated by using a water turbine (propeller) at a high tidal current. However, there is a problem that the amount of power generation is small relative to the equipment cost, and the flow direction changes four times a day, so that the maintenance cost is too high, and a floating body is connected to the wave (swell) and a rope is connected. Wave power generation, in which the floating body generates power with potential energy that moves up and down due to undulations, is not practical because the amount of power generation is small compared to the equipment cost. Turbine power generation using airflow has been put to practical use in small-scale power generation, but it is too small to use a large amount of airflow energy to manufacture a large-scale power generation device. There was a problem that it was very difficult.

The present invention solves the above-mentioned problems, and the distribution of solar thermal energy, which is the maximum energy that falls on the earth's surface, is not uniform. There is a temperature imbalance. In addition, inertial energy due to the rotation of the earth is added to generate ocean currents in the sea area.
In addition, wind is generated by solar thermal energy falling on the surface of the earth, and waves are formed on the sea surface.
This gravitational wave power generation device is intended to provide a gravitational wave power generation device that can extract powerful electric energy by combining the energy of ocean currents and the energy of waves and the energy of gravity of the earth. .
(In tidal currents, lunar attractive energy will also be added.)

The gravity wave power generation device according to claim 1 of the present invention includes a heavy mass portion having a rotating shaft (shaft) above a heavy mass in a sea area having a water current such as an ocean current and a tidal current, and the rotating shaft. A floating body that moves up and down according to the undulations on the sea surface with a buoyant body that has a bearing that fits in, and a reversing motion that occurs in the rotating shaft portion that is fitted into the bearing of the floating body is corrected by a one-way clutch or a ratchet mechanism. A normal rotation conversion power generation unit that generates electric power in place of rolling motion, and a mooring unit moored to an anchor installed on the sea floor using a wire rope, a buoy or the like at a joint portion between the floating body portion and the heavy block portion. Configured.
This configuration has the following effects.
(1) Since the joint part of the floating body part and the heavy block part is moored to an anchor installed on the seabed, waves (swells) on the sea area can be captured by the entire floating body part.
(2) Since the entire floating body can be moved up and down based on the rotation shaft fitted in the bearing of the floating body, a very strong reversal motion can be generated on the rotation shaft.
(3) Since the forward conversion power generation unit is included, the generator can be turned by changing the reversal motion of the rotating shaft into the forward motion.

According to claim 2 of the present invention, in order to protect the entire apparatus from the impact of strong waves, the gravity wave power generation apparatus is submerged in the sea according to weather conditions such as a typhoon. An inlet / outlet valve that can put seawater into and out of the part, a reel that can wind and unwind the wire rope to the mooring part, and discharge the seawater stored in the floating body part with compressed air, And a compressor capable of increasing the buoyancy of the entire apparatus.
With this configuration, in addition to the operation of the first aspect, the following operation is provided.
(1) Since it has an inlet / outlet valve and a compressor, it can reduce the buoyancy of the floating body by introducing seawater from the inlet / outlet valve into the floating body according to the weather conditions in the sea area, and it has a compressor. Compressed air can be stored, seawater contained in the floating body can be drained from the inlet / outlet valve with compressed air, and the buoyancy of the floating body can be increased.
(2) Since the reel is provided, the entire apparatus can be submerged in the sea during a typhoon, and the entire apparatus can be protected from powerful waves.
(3) Moreover, even if the whole apparatus is submerged in the sea, it can generate electric power if a reversal motion is generated on the rotating shaft.

In the gravity wave power generation device according to claim 3 of the present invention, when the sea waves (swells) are small, the heavy current portion receives strong resistance to the ocean current, and the heavy mass portion moves backward, and when the ocean current resistance is weakened, the gravity wave is restored. By rotating the heavy mass portion forward by force, the heavy mass portion is adapted to generate a back-and-forth motion (in the direction of the ocean current) in the heavy mass portion, and according to the weather conditions in the sea area And a heavy block weight adjusting chamber capable of supplying air or seawater to change the weight of the heavy block part.
With this configuration, in addition to the operation of the first or second aspect, the following operation is provided.
(1) Since it has a rotating blade, when the wave is small and the vertical movement of the floating body is small, the rotating blade receives a large amount of water flow resistance or removes the water flow resistance before and after the heavy block portion. Since the movement can be increased, the reversing movement of the rotating shaft can be strengthened and the amount of power generation can be increased.
(2) In addition, since the heavy mass weight adjustment chamber is provided in the heavy mass part, the weight of the heavy mass part is changed according to the weather condition in the sea area to increase the back-and-forth movement of the heavy mass part, which is generated on the rotating shaft. It can also be adjusted so that the reversal movement becomes strong.

The gravity wave power generator according to claim 4 of the present invention includes an upper column having a shaft at the uppermost portion on the sea surface of the heavy block portion and a sail column attached to the upper side of the shaft when the ocean wave is small. In order to increase the back-and-forth movement of the heavy mass portion, the sail that can receive and exchange winds in the sea by lifting and lowering the sail, and the inclination of the sail attached to the lower side of the shaft And a weight inclined in the opposite direction.
With this configuration, in addition to the operations of the first to third aspects, the following operation is provided.
(1) Since it has a sail, it can capture the energy of wind power in the sea area and tilt the weight in the direction opposite to the wind direction.
(2) Since the weight is provided, the center of gravity of the heavy mass portion can be changed by the inclination of the weight, so that the back and forth motion of the heavy mass portion can be increased and the amount of power generation can be increased.

According to the gravity wave power generation device of the first aspect of the present invention, the following effects are obtained.
(A) Since waves and water currents in the sea area are constantly generated, power can be generated for 24 hours, and the efficiency and stability are excellent.
(B) Since the wave energy, gravity energy, and water current energy are concentrated on the rotating shaft portion, powerful energy can be recovered from the rotating shaft portion with high efficiency, and the cost is excellent.
(C) The heavy block portion and the floating body portion may be made of metal, but may be made of concrete other than the periphery of the rotating shaft at the upper portion of the heavy mass portion, and the floating body portion may be made of concrete other than the periphery of the bearing, Large power generators can be manufactured at low cost and are economical.
(D) As for the mooring method to the anchor of the seabed, it can be moored by connecting it to a concrete anchor manufactured on land or at sea with a wire rope in advance and dropping it from the sea to the seabed. Can be easily installed.

According to the gravity wave power generation device of the second aspect of the present invention, in addition to the effect of the first aspect, the following effect is obtained.
(A) Even in a stormy state such as a typhoon, the entire apparatus can be submerged in the sea, so that the entire apparatus can be maintained from changing weather conditions, and has excellent compatibility and controllability.
(B) Even when the entire apparatus is submerged in the sea, power can be generated if the reversal motion can be generated on the rotating shaft, which is excellent in efficiency and economy.

According to the gravity wave power generation device of the third aspect of the present invention, in addition to the first and second aspects, the following effects are obtained.
(A) When the wave in the sea area is small and the vertical movement of the floating body is small, it is possible to capture the water current energy in the sea efficiently, increase the back-and-forth movement of the heavy mass part, and increase the amount of power generation. Is excellent.
(B) Since the weight of the heavy block portion can be changed in accordance with the weather conditions in the sea area, efficient power generation can be maintained, and the compatibility and operability are excellent.

According to the gravity wave power generation device of the fourth aspect of the present invention, the following effect is obtained in addition to the first to third aspects.
(A) When the waves in the sea area are small and the vertical movement of the floating body is small, wind energy and gravitational energy on the sea can be efficiently captured, and the power generation can be increased by increasing the back and forth movement of the heavy mass part. And it is economical.
(B) When operated in combination with claim 3, it is possible to further increase the amount of power generation by increasing the back-and-forth movement of the heavy mass portion, which is excellent in efficiency and economy.

FIG. 1 is a schematic configuration diagram of a gravity wave power generation apparatus 1 according to an embodiment of the present invention, where W is a wave, C is a water current such as a sea current and a tidal current, and G is gravity.
1 is a gravity wave power generation device, 2 is a floating body floating on the sea surface, 2S is a vertical motion in which the floating body moves up and down in accordance with the waves, 2a is a bearing 2b through the vertical movement of the floating body 2 A forward rotation conversion part that changes the reverse movement of the rotating shaft 3a into a normal rotation movement by a one-way clutch or a ratchet mechanism, 2b is a bearing fixedly attached to the floating body 2 on the left and right, and 3 is pulled toward the seabed by gravity G The heavy mass portion 3a is a shaft-like rotary shaft that protrudes to the left and right integrally with the upper portion of the heavy mass portion 3, 3S is based on the rotary shaft 3a portion and the bearing 2b, and the ocean current C and the floating body portion 2 Longitudinal motion in which the heavy mass part moves slightly back and forth due to vertical motion, etc., 4a is an anchor placed on the seabed to moor the gravity wave power generation device 1, 4b is a wire rope connecting the gravity wave power generation device 1 and the anchor 4a, 4c is wire A buoy for floating so that the weight of the loop 4b is not applied to the gravitational wave power generator 1. 4d is a hook installed on the heavy block 3 to connect the wire rope 4b and the heavy block 3. It is a power generator which generates electric power by rotation generated in conversion part 2a.
FIG. 2 is a side cross-sectional view, b-plane cross-sectional view, and c-front cross-sectional view of the gravity wave power generation apparatus 1.

An operation method of the gravity wave power generation device 1 in the embodiment will be described.
First, anchors 4a and hooks 4d installed on the sea floor are moored using a wire rope 4b, so that a wave 2 in the sea area can be received by the floating body portion 2 to generate a vertical motion 2S. At this time, a very strong reversing motion can be generated in the rotating shaft 3a portion integrated with the heavy block portion 3, and the reversing motion is converted into a normal motion by the normal rotation converting portion 2a. The device 5 can be operated to generate electricity. In addition, since the water current is unidirectional in the ocean current region, the direction of the power generation device is stabilized by setting the joint of the heavy mass portion 3 and the floating body portion 2 to the end of the floating body portion 2.

  FIG. 3 shows the gravity wave power generation apparatus 1 according to the embodiment, the gravity wave power generation apparatus 1 itself is submerged in the sea according to weather conditions such as strong winds and typhoons, and the entire apparatus is detected from wave impacts such as strong winds and typhoons. The mechanism that can protect is attached. In addition, since the wave W (swell) is small, when the vertical movement 2S of the floating body 2 is small, the resistance of the water flow C received by the heavy block 3 in the sea is increased or decreased, or the sea level is higher than the sea level. A sail sail is attached to the upper side of the shaft 3d provided at the upper part of the column 3b portion, and a pendulum weight P for moving the center of gravity of the heavy mass portion is attached to the lower side of the shaft 3d, thereby moving the heavy mass portion 3 back and forth. It is a gravity wave power generation device equipped with a mechanism capable of increasing the amount of power generation by increasing 3S as much as possible.

First, a method of sinking the gravity wave power generation device itself in the sea will be described with reference to FIG.
D is a water inlet / outlet valve that can put seawater into and out of the floating body 2, and R is a wire connected to the anchor 4 a by making seawater into the floating body 2 from the water inlet / outlet valve D and reducing the buoyancy of the floating body 2. It is a reel that can sink the entire power generation device by winding the rope 4b.
Even if this gravitational wave power generation device sinks into the sea, it can generate electricity if a reversal motion occurs at the end of the rotating shaft 3a. It can generate electricity.
Further, when the power generator is lifted, the reel R is unwound and compressed air produced by a compressor (comp) built in the floating body 2 is sent into the floating body 2 so that seawater is discharged from the inlet / outlet valve D. It is possible to float by increasing the buoyancy of the floating body 2.
In addition, since a control room in which a person can live can be provided in the floating body 2, the power generation apparatus can be optimally maintained and operated according to weather conditions.

Next, a method of increasing the amount of power generation by increasing the back-and-forth motion 3S of the heavy mass portion 3 when the ocean wave W (swell) is small and the vertical motion of the floating body portion 2 is small will be described with reference to FIG.
F is a rotating blade disposed on the left and right below the heavy block 3 and when it is in the horizontal direction as shown in FIG. 3, the resistance to the water flow C is small, and the left and right rotating blades F are rotated. If it is vertical, the resistance is increased, and the mass part 3 has a large back-and-forth motion 3S that swings backward. Further, when the left and right rotor blades F are rotated and returned to the horizontal position, they return to the front by the restoring force energy by the gravity G. By this action, the back-and-forth motion 3S of the heavy block 3 can be increased. (The right side in Fig. 3 is the rear.)
In addition, by adjusting the inclination of the left and right rotor blades F with respect to the water flow C, it also functions as a rudder that determines the entire power generation device in a direction suitable for power generation. The joint portion can be protected from being damaged by applying unnecessary force to the rotating shaft 3a and the bearing 2b, which are the joint portion with the lump portion 3.

In addition, the bottom of the floating body 2 in FIG. 3 is structured like a wave receiving structure 2r that is more affected by the waves W, so that the vertical motion 2S is increased, and the entire power generator is directed in a suitable direction. A rudder or the like may be attached to the bottom to make it appear.
Further, the power source for operating accessories such as a motor and a compressor for rotating the rotor blades F creates an upper and lower air flow 2c using the wave W as described at the rear in FIG. It is also possible to install a general-purpose wave power generator that generates power by rotating.

3c in FIG. 3 is a room that can be replaced with air or seawater in order to change the weight of the heavy mass part 3 according to the weather condition of the sea area, and is a heavy mass weight adjustment room.
Further, a sail sail receiving wind B is attached to a shaft 3d provided on the upper column 3b on the sea surface of the heavy block portion 3, and the wind B on the sea area is received by lifting the sail sail. The sail P tilts and the weight P attached to the lower side of the shaft 3d tilts in the direction opposite to the tilt of the sail column (4S). As a result, the center of gravity of the heavy block 3 is shifted and the lower portion of the heavy block 3 is rearward. (3S). Further, when the sail is lowered (lo), the weight P returns to the original by gravity, and the heavy block 3 also returns to the original by the gravity G.
The back and forth motion is generated in the heavy mass portion 3 by the above action.

FIG. 4 is a gravitational wave power generator that can generate power even when the water flow direction is changed mainly like a tidal current. In FIG. 4, a is a plan sectional view, and b in FIG. 4 is a front sectional view.
4 in FIG. 4 is a floating part floating on the water surface, 4a is an anchor placed on the seabed to moor the gravitational wave power generator, 4b is a wire rope connecting the gravitational wave power generator and the anchor 4a, 4c is Buoys (plural) 5 and 5 are power generators for floating the wire rope 4b so that the weight of the wire rope 4b is not applied to the gravity wave power generator. Further, since the water flow direction C is reversed, there are two hooks 4d of the heavy block 3 at the front and rear, and are anchored to the front and rear anchors 4a by wire ropes 4b.
Even if the front and rear of the gravitational wave power generator are moored and the water flow direction C is reversed, the rotating shaft 3a is disposed at the center of the floating body 2 so that power can be generated continuously.
Since the gravity wave power generation device 1 according to the embodiment is configured as described above, it has the following operations.
(A) Gravity energy, wave energy and ocean current energy can be combined, and permanent and powerful electric energy can be created from nature.
(B) Since it can be submerged in the sea according to weather conditions such as a typhoon, the power generation device can be protected from strong impacts such as a typhoon.
(C) When the wave in the sea area is small and the vertical movement of the floating body 2 is small, the amount of power generation can be increased by increasing the longitudinal movement 3S of the heavy mass 3.

(1) Install a gravitational wave power generation device in the suburbs of the city that has water currents such as ocean currents and tidal currents, and supply the generated electricity to the city using submarine cables for power transmission.
(2) A plant that produces hydrogen gas by electrolyzing water using electricity generated by the gravitational wave power generation system in the sea area is installed on the sea area and supplied to the energy consumption area in the hydrogen gas state. .

1 is a schematic configuration diagram of a gravity wave power generation device 1 according to an embodiment. In the gravity wave power generation device 1 of the embodiment, a is a side sectional view, b is a plan sectional view, and c is a front sectional view. FIG. 3 is a front cross-sectional view in which the gravity wave power generation apparatus 1 according to the embodiment is equipped with a mechanism for sinking in the sea during a typhoon and the like, a mechanism for increasing the amount of power generation by increasing the back-and-forth motion 3S of the heavy mass portion 3, and the like. A gravitational wave power generator capable of generating power even when the direction of water flow changes, a being a cross-sectional plan view and b being a front cross-sectional view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gravitational wave power generation device 2 Floating body part 2S Vertical motion 2a in which a floating body part moves up and down Normal conversion part 2b Bearing 2c Air flow 2d Air turbine 2r Wave receiving structure 3 Heavy mass part 3S Longitudinal motion 3a in which a heavy mass part moves back and forth Rotation Shaft 3b Upper column 3c Weight adjustment chamber 3d Shaft 4S Inclination motion of weight P 4a Anchor 4b Wire rope 4c Buoy 4d Hook 5 Power generator B Wind C Water flow D Inlet / drain valve F Rotary blade G Gravity P Weight R Reel W Wave Comp Compressor Sail Sail

Claims (4)

  In sea areas with ocean currents such as ocean currents and tidal currents, the buoyant body with a heavy mass portion having a rotating shaft (shaft) at the top of a heavy mass and a bearing that fits the rotating shaft in accordance with the swell on the sea surface A forward-rotation conversion power generation unit that generates electric power by converting the reversal motion generated in the rotary shaft portion fitted into the bearing of the floating body portion into a normal motion by a one-way clutch or a ratchet mechanism; A gravitational wave power generator comprising: a mooring portion moored to an anchor installed on a seabed using a wire rope, a buoy or the like at a joint portion between a floating body portion and the heavy mass portion.   In accordance with weather conditions such as typhoons, the gravitational wave power generator is submerged in the sea, and in order to protect the entire apparatus from the impact of strong waves, a water inlet / outlet valve that can take seawater into and out of the floating body, and A reel capable of winding and unwinding the wire rope around a mooring section, and a compressor capable of discharging seawater stored in the floating body section with compressed air and increasing the buoyancy of the entire apparatus. The gravity wave power generation device according to claim 1, wherein:   When the ocean waves are small, the heavy mass part is strongly affected by the current flow and the heavy mass part moves backward, and when the sea current resistance is weakened, the heavy mass part returns to the front by the restoring force due to gravity. A rotary wing capable of generating back-and-forth motion (in the direction of the ocean current) in the lump part and a chamber in the lower part of the sea of the heavy lump part to supply air or seawater according to the weather conditions of the sea area The gravity wave power generation device according to claim 1, further comprising: a heavy mass weight adjustment chamber capable of changing a weight of the heavy mass part.   When the ocean waves are small, the upper column with the shaft at the top of the sea surface of the heavy block and the wind on the ocean area are received by lifting and lowering the sail attached to the upper side of the shaft. A sail that can be exchanged, and a weight that is attached to the lower side of the shaft and tilts in a direction opposite to the inclination of the sail in order to increase the back-and-forth movement of the heavy mass portion. The gravity wave power generation device according to any one of claims 1 to 3.

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