JP2002048049A - Wave power plant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the high output by forming a power plant into a shape capable of coping with a change of the severe marine weather and utilizing the reciprocating movement of the wave in the vertical direction, and to solve the problem that the wave power plant is being developed in various research system and that it is hard to practically use because of the insufficient strength for coping with a change of the marine weather and the low efficiency. SOLUTION: In this wave power plant formed of a power generating part of a main body and a mooring device or the like, the power generating part of a cylindrical container having a sufficient length is provided with a floating force chamber, a rotary blade chamber and a power generating chamber. The power generating chamber is provided with a rotating force transmitting chamber and a generator, and vertically moored in relation to the sea level, and the rotating blade chamber converts the vertical movement of the wave to the vertical water flow, and the rotating blade converts it to the rotating energy. The rotating energy is transmitted to the generator through the rotating transmitting force so as to obtain the generating power.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wave power generation device that converts a vertical motion of a wave into a rotational motion in a certain direction and applies a rotational force to a generator to generate power.

[0002]

2. Description of the Related Art Conventionally, wave power generation in which a turbine is rotated by air pressure generated by the vertical movement of waves in a container and a generator is turned has been the mainstream.

[0003]

The conventional methods have the following drawbacks, respectively. (1) Changes in indoor air volume due to up and down of waves, that is, a method of converting air pressure into a rotational force of a fan requires large-sized floating type and fixed type devices and low power generation efficiency. (2) The method of converting the wave moving thrust into rotational force has a low power generation efficiency because the wave thrust has a period.

[0004]

SUMMARY OF THE INVENTION Therefore, in the present invention, the apparatus is relatively small, follows the movement of the wave in the center of the power generation section of the cylindrical container, and converts both flows in which the wave moves up and down into rotational movement. The above problem has been solved by attaching a rotor.

[0005]

[Function] (1) The power generation section of the main body is standing in the sea,
The lower mooring device is connected to a plurality of stabilizers and is locked to the seabed, so it is not directly affected by the rise and fall of waves, and is stable as if it were fixed in the sea despite being a buoyant body Will be installed. (2) The water surface in the middle rotor chamber of the power generation unit rises and falls in the same manner as the outer water surface because the upper and lower parts of the rotor chamber are open in a lattice structure. (3) The rotor provided at the center of the rotor chamber captures both upper and lower water flow energy generated by the vertical movement of the wave and converts the energy into rotational force. (4) The rotary wing repeatedly rotates and reversely rotates in accordance with the vertical movement of the wave, and the rotational force is connected to a free gear that operates only when ascending, a free gear that operates only when descending, and operates when descending. Since the gears are provided with a gear for changing the direction of rotation, the generator always applies a rotational force in the same direction. (5) The transmission gear and the flywheel provide the number of rotations required for power generation, and keep rotating even when the rotor blades stop moving at the peaks and valleys of the wave, and continue stable power generation. (6) The rotor is in the rotor chamber below the sea surface, and even if the sea surface is rough and there are high waves, a direct shock wave or the like is not applied to the rotor. (7) The buoyancy body and the weight provided in the middle of the mooring device correspond to the rising and falling of the sea surface due to the ebb and flow of the tide, and secure the stability of the entire device.

(3) The floating body provided in the rotor chamber converts the kinetic energy of both the upper and lower sides generated by the vertical movement of the wave into the rotational force by the drive belt and the rotational power transmission device. (4) The vertical movement of the floating body is converted into rotational and reverse rotational force, and the rotational force is connected to a free gear that operates only when ascending and a free gear that operates only when descending, and operates when descending. Since the gear that changes the direction of rotation is added to the gear that rotates, the generator always applies a rotational force in the same direction.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below. (1) This device is composed of a power generation unit 1 and a mooring device 2. (2) The buoyancy chamber 3 in the lower part of the power generation unit 1, the rotor chamber 4 in the middle part,
A power generation chamber 5 is provided at an upper part, and a torque transmission device 6 and a generator 7 are provided in the power generation chamber 5. (3) A vent 8 at the upper part of the rotor chamber 4 and a water inlet 9 at the lower part.
Is provided, and the periphery is formed into a lattice 10 structure. (4) A rotary blade shaft 11 is provided at the center of the rotary blade chamber 4, and a rotary blade 12 is provided below the water curve, and is connected to the generator 7 via the rotary power transmission device 6. (5) The rotational force transmission device 6 includes a free gear 13 attached to the rotary blade shaft 11 with the rotation direction reversed, a conversion gear 14 for changing the rotation direction, a transmission gear 15, and a fluid coupling 16.
A drive belt 18 connects the rotary blade shaft 11 side and the generator 7 side, and a flywheel 20 is provided on the rotary shaft 19 of the generator 7. (6) A sufficiently long generated power output cable 21, a plurality of stabilizers 22, a sufficiently long anchor chain 23, a buoyant body 24 and a weight 25 are mounted in the middle at the lower part on the outer side of the buoyancy chamber 3. The mooring device 2 including the anchor 26 and the like is attached. (7) Corner reflector 27 on the upper outside of power generation unit 1
Attach. A wave power generation device including the above power generation unit and mooring device.

(4) A floating body 29 having a water catching plate 28 attached to the lower part of the rotating blade chamber 4 is provided, and a fixed roller 30 is provided at the bottom of the rotating blade chamber 4. At 18, the drive belt 18 is fixed to one of the fixed points 31 of the floating body 29, and the up-and-down movement of the floating body 29 is connected to the generator 7 via the rotational force transmission device 6. (5) The torque transmitting device 6 includes a free gear 13 that incorporates a ratchet mechanism and transmits torque only in a fixed direction, a conversion gear 14 that changes the direction of rotation, a transmission gear 15, and a drive belt 18, and includes a generator. The flywheel 20 is provided on the rotating shaft 11 of the seventh embodiment.

[0007] The present invention has the above-mentioned structure. When using it, the wave power generator is installed on a stationary sea surface, and a weight is used so that the waterline is positioned above the power generation unit. After adjustment, it is locked with an anchor etc. off the coast where relatively large waves come, catches the seawater flow due to the up and down of the waves with the rotating wings, rotates the generator, and obtains stable and efficient power generation output .

According to the present invention, a cylindrical container which is not greatly affected by weather changes on the sea is held in the shape of standing in the sea and anchored to the seabed by an anchor chain, an anchor or the like. For this reason, (1) it is possible to generate and supply clean power without using fuel or the like. (2) The power generation efficiency is high because both the up-and-down and reciprocating forces of the wave are directly converted into rotational force. (3) Since the wave power generation device itself is compact and has a floating structure, it is easy to manufacture and install, and adapts to changes in sea conditions, is resistant to wave impact, and has a high operation rate. (4) The structure is simple, robust, and can be manufactured at low cost. (5) A stable output can be obtained by installing and operating a plurality of devices. (6) It does not require vast land like wind power. As described above, the present invention is a highly efficient wave power generation device that has a simple structure, is inexpensive, and is adapted to weather and sea conditions. This device greatly contributes to this field.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of an embodiment.

FIG. 2 is an overall side view of the embodiment.

FIG. 3 is a longitudinal sectional side view of the embodiment according to claim 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Power generation part 12 Rotor 23
Anchor chain 2 Mooring device 13 Free gear 24
Buoyancy body 3 buoyancy chamber 14 conversion gear 25
Weight 4 Rotor blade chamber 15 Transmission gear 26
Anchor 5 Power generation room 16 Fluid coupling 27
Corner reflector 6 Torque transmission 17 Straight bevel gear 28
Water catching plate 7 Generator 18 Drive belt 29
Floating body 8 Vent 19 Rotation axis 30
Fixed roller 9 Water inlet 20 Flywheel 31
Fixed point 10 Grid 21 Generated power output cable 11 Rotor blade axis 22 Stabilizer

Claims (3)

[Claims] (1) The present wave power generation device includes a long cylindrical power generation unit and a mooring device. (2) In the power generation unit, a buoyancy chamber is provided in the lower part, a rotor chamber is provided in the middle part, and a power generation chamber is provided in the upper part.
Provide a torque transmission and a generator. (3) The upper and lower periphery of the rotor chamber are opened in a lattice structure, and the vertical motion of the waves is converted into vertical water flow energy in the rotor chamber. (4) A rotating blade axis is provided at the center of the rotating blade chamber, and a rotating blade is provided below the water surface, and upper and lower water flow energy is converted into rotating energy by the rotating blade, and connected to a generator via a rotating force transmission device. (5) The rotational force transmission device includes a free gear that incorporates a ratchet mechanism and transmits rotational force only in a certain direction, a conversion gear that changes the rotational direction, a transmission gear, a fluid coupling, a straight bevel gear, and a drive belt. A flywheel is provided on the rotating shaft of the generator. (6) At the lower part outside the buoyancy chamber that floats the entire power generation unit, a sufficiently long generated power output cable, a plurality of stabilizers, a sufficiently long anchor chain, a buoyancy body and a weight are attached in the middle, and Attach a plurality of mooring devices such as anchors. A wave power generation device including the above power generation unit, mooring device, and the like. 2. A vertically movable floating body having a water catching plate attached to a lower portion thereof is provided in place of a rotating blade axis and a rotating blade of a rotating blade chamber, and a fixed roller is provided at a bottom of a power generation chamber and a rotating blade chamber. Connected by a drive belt through the power generation chamber. The wave power generator according to claim 1, wherein the drive belt is fixed to a fixed position of the floating body, and the up-and-down motion of the floating body is connected to the generator via a rotational power transmission device. 3. The wave power generator according to claim 1, wherein the center of the rotor chamber is made thinner than the diameters of the vent and the water inlet to increase the speed of the water flow, and the rotor is attached to this part.