JP2003065200A - Wave power generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that power generation using a sea wave is being developed in a research organization or the like but has not been commercialized yet, of which a cause is estimated as low strength and efficiency responding to a change of a marine weather or the like, by forming a shape corresponding to the change of the severe marine weather or the like, and obtaining high output by utilizing a change of a water surface of reciprocation of up and down movement of the wave in a U-shaped cylinder filled with waster provided in a floating structure. SOLUTION: A plurality of U-shaped cylinders are provided in the floating structure which can incline and is moored on a sea surface by a mooring rope, and are filled with water. A vibrating chamber is provided, a driving chamber and a power generation chamber are provided on an upper part. A floating body, a hydraulic circuit, a hydraulic pump, and a generator or the like are placed. A waster surface movement generated in the vibrating chamber by a swing of the floating structure is converted into rotation energy by the floating body, a balance rope, a free gear, and an inverting gear. The rotation energy is connected to the power generator through the hydraulic pump, the hydraulic circuit, and a hydraulic motor, and stable power generation output is obtained. The wave power generator is structured of a power generation part of a main body and a mooring part.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, power generation in which a turbine is rotated by air pressure due to changes in waves has been the mainstream.

[0003]

Each of the conventional methods has the following drawbacks. In the method of rotating the turbine by changing the indoor air pressure due to the rise and fall of the waves, both the floating type and the fixed type occupied a large proportion of the air chamber, and the equipment was large and the power generation efficiency was low. Further, in the case of the fixed type, it was difficult to construct a facility on a suitable place such as the coast.

[0004]

[Means for Solving the Problems] Therefore, in the present invention, a U-shaped cylinder is installed in a floating structure to fill it with fresh water, follow the movement of the fresh water surface inside the cylinder, and rotate both flows that move up and down. The above-mentioned problem is solved by rotating the generator by providing a floating body, a balance line and a free gear, a hydraulic pump, a hydraulic circuit, a hydraulic motor, etc.

[0005]

[Operation] (1) The floating structure has large shaking, and the fresh water surface inside the vibration chamber of the U-shaped cylinder provided inside is open at the top, so the shaking of the floating structure causes the same as the external water surface. Rises and falls. (2) The floating body in the vibrating chamber moves up and down by shaking, and the balance rope connected to the floating body, which is composed of the wire rope, the chain, and the wire rope, meshes with the free gear, and operates only when rising. Is connected to a free gear that operates only when descending, and a gear that changes the rotation direction is added to the gear that operates when descending.Therefore, a rotating force is always applied to the generator in the same direction. give. (3) The balance rope and the balance weight respond to the vertical vibration and the horizontal vibration of the fresh water surface, and transmit a strong rotational force to the generator or the like. (4) The hydraulic circuit of the power generation chamber provides the number of rotations required for power generation, so that the floating body maintains constant speed rotation even when the floating body is in a motion stopped state at the peaks and valleys of the water surface, and stable power generation is continued.

[0006]

EXAMPLES Examples of the present invention will be described below. (1) The present wave power generation device 0 is composed of a plurality of power generation units 2 and mooring units 3 installed on the floating structure 1. (2) The power generation unit 2 is configured by installing the vibration chamber 4, the counterweight chamber 5, and the power generation chamber 6 on the floating body structure 1. (3) The mooring section 3 is composed of a power generation output cable 7, a plurality of mooring lines 8 and anchors 9. (4) In the vibrating chamber 4, a U-shaped cylinder 10 is filled with fresh water and a vertically movable floating body 11 is provided. A roller 12 is provided around the floating body 11 and an edge 13 is provided above the entire periphery at a lower portion. The dish-shaped water catching plate 14 provided is attached. (5) The balance rope 1 connected to the wire rope 15, the chain 16, and the wire rope 15 at the center of the upper part of the floating body 11.
7 is attached, and a balance weight 18 that is balanced with the floating body 11 on the horizontal surface is attached to the tip, and is suspended in the balance weight chamber 5. (6) The balance rope 17 meshes the chain 16 portion with two free gears 19 in the power generation chamber 6, and the hydraulic pump 2 is provided through the free gears 19 that transmit the rotational force in only one direction.
Connect to 0. (7) The two free gears 19 are mounted such that the directions of transmitting the rotational force are opposite to each other, and the rotational force of one free gear 19 is driven by converting the rotational direction into a constant direction via the reversing gear 21 and the transmission gear 22. It is transmitted to the hydraulic pump 20 by the chain 23. (8) In the power generation chamber 6, the hydraulic pump 20, the hydraulic circuit 24,
A hydraulic motor 25, a generator 26, and the like are provided, and each power generation device is covered with an upper structure 27 to shield it from seawater or the like. A wave power generation device 0 including the power generation unit 2, the mooring unit 3 and the like described above.

The present invention has the above-mentioned structure, and when this is used, the book and the wave power generation device are locked with an anchor or the like off the coast where a large wave is coming, and the floating structure of the wave structure is caused by the vibration of the wave. By capturing the vertical movement of fresh water caused by shaking by a floating body, the generator is rotated and stable and highly efficient power generation output is obtained.

According to the present invention, the device is locked on the seabed in a state in which the device is oriented in the direction of wave wind. Therefore, (1) it is possible to generate and supply clean electric power without consuming fuel or the like. (2) Since both the reciprocating force of the water surface moving up and down in the U-shaped cylinder of the floating structure is converted into a rotational force, the operation efficiency and the power generation efficiency are high. (3) The movable parts such as floating bodies are in contact with fresh water, and there is no influence such as rust due to salt of seawater and adhesion of marine life. (4) Easy to manufacture and install because it is a floating structure, and
It adapts to changes in sea conditions, is resistant to the impact of waves, and has high availability and maintainability. In addition, the manufacturing cost is low. (5) By installing and operating multiple power generation units, the consolidation effect is enhanced and the operation can be performed with low maintenance costs. Also, the efficiency of using the sea surface is high. (6) Compared with other methods such as solar power generation and wind power generation, the power generation operation time is long and stable high output can be obtained. (7) There is no need for a vast land like wind power generation, and problems such as noise and damage to the landscape are limited. As described above, it is a highly efficient wave power generation device and makes a great contribution to the field.

[Brief description of drawings]

FIG. 1 is a front sectional view of a power generation unit according to an embodiment.

FIG. 2 is an overall side view of the embodiment

[Explanation of symbols] 0 Wave power generator 1 Floating structure 2 power generation section 3 mooring department 4 Vibration chamber 5 counterweight chamber 6 power generation room 7 Power generation output cable 8 mooring lines 9 anchors 10 U-shaped cylinder 11 floating body 12 roller 13 edges 14 Water catching plate 15 wire rope 16 chains 17 Balancing rope 18 counterweight 19 free gear 20 hydraulic pump 21 Reverse gear 22 speed change gear 23 Drive chain 24 hydraulic circuit 25 hydraulic motor 26 generator 27 Superstructure

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[Procedure amendment]

[Submission date] September 4, 2001 (2001.9.4)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 2

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 3

[Correction method] Change

[Correction content]

3. A counterweight chamber, a floating body, a counterbalance, a counterweight, etc.
Instead, install a rotary blade on the bottom of the U-shaped cylinder,
It meshes with two free gears to connect hydraulic circuits and generators.
The wave power generation device according to claim 1, which is connected to a drive shaft. ─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] December 14, 2001 (2001.12.
14)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 4

[Correction method] Added

[Correction content]

4. An O-shaped cylinder is provided instead of the U-shaped cylinder.
The wave power generation device according to claim 1, claim 2, or claim 3.

[Procedure amendment]

[Submission date] May 2, 2002 (2002.5.2)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

Claims (3)

[Claims] (1) A plurality of U-shaped cylinders are provided on a tiltable floating structure moored by mooring lines on the sea surface to fill fresh water and the like, and a floating body movable up and down is provided. Install a balance line connected with a counterweight where the structure balances the floating body at the horizontal reference position. (2) Two free gears that transmit the rotation only in a fixed rotation direction are attached in the opposite directions, and are engaged with the balance rope.
One of the free gears is converted through the reversing gear so as to be in the same direction as the rotation of the generator, and is connected to the hydraulic circuit or the like and the power generation shaft. (3) Each power generation device above the power generation unit is covered with an upper structure to shield it from seawater. A plurality of U-shaped cylinders are installed in the above floating structure to fill fresh water and the like, and the vertical movement of the fresh water surface in the cylinder caused by the sway of the floating structure on the sea surface is floating, balancing and free. Gears are used to convert the rotational force to a constant rotational direction and connect it to the hydraulic circuit etc. and the drive shaft of the generator so that the generator is always driven in the same direction, covered by the upper structure and shielded from seawater etc. Wave power generation device. 2. The wave power generation device according to claim 1, wherein a plurality of U-shaped cylinders installed in the floating structure intersect with each other in a * shape to communicate the inside. 3. A balance weight chamber and a vibration chamber are communicated with each other, a guide roller is provided at the bottom of a U-shaped cylinder, and instead of the balance weight, floating bodies are connected in a loop by a balance rope. The wave power generator according to claim 1 and claim 2.