JPH06330841A - Wave power generating set - Google Patents

Abstract

PURPOSE:To provide a wave activated power generating set that improves the recovery efficiency of wave energy, reducing the cost of production, and gets maintenance facilitated. CONSTITUTION:Plural pieces of sector flap type floats 3 are installed on the circumference of a floating structure 1 to be moored on the sea, an air tank 1B opened to the sea surface is installed in this structure 1, while a vertically movable circular float 4 is installed in this air tank 1B, and then a power generating means, which converts waves of the sector flap type float 3 and the float 4 and movements by a sea level variation into electricity, is installed in the floating structure 1 as the constitution. With this formation, since the plural floats 3 are set up on the circumference of the floating structure 1, wave energy is effectively recoverable even if a sense of waves is varied by a wind direction or the like, and further a mooring system is adopted, whereby it can be easily set up in an optional position, and the installation cost is also reducible, an maintenance can be done easily.

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 which captures wave energy generated on the sea by a mechanical mechanism and converts it into rotational energy to generate electric power.

[0002]

2. Description of the Related Art Many conventional wave power generators are of a fixed type installed in a limited place. An example of this fixed wave power generator is shown in FIG.

A wave power generator 31 shown in FIG. 5 is vertically provided by a fixed structure 33 having a U-shaped opening 32 and a horizontal shaft 34A pivotally supported below an inner surface 32A of the opening 32 facing each other. Flap-shaped rocking body 34 that can be rocked freely in any state
And a power generation means (not shown) installed in the fixed structure 33, which captures the wave energy acting on the oscillator 34 by a mechanical mechanism, converts it into rotational energy and converts it into electricity, The surface of the oscillating body 34 faces in the direction of the waves, and the oscillating body 34 is installed on the shore so that the upper portion of the oscillating body 34 comes out of the sea surface.
The wave energy causes the wave energy to be captured by the rocking body 34 rocking back and forth, and this rocking energy is converted into electricity.

[0004]

However, according to the conventional fixed wave power generation device 31 described above, the swinging body 34 rotates due to a change in the direction of the waves due to the wind direction or a decrease in the height of the sea surface at low tide. There is a problem that the state becomes worse, the recovery efficiency of wave energy becomes worse, and the cost becomes higher. Further, as described above, it is difficult to install the wave power generation device on the shore so that the surfaces of the oscillating bodies 34 face each other in the direction of the waves and the upper portions of the oscillating bodies 34 come out of the sea surface, which increases the construction cost. There was a problem. Furthermore, once installed, there is a problem that maintenance becomes extremely difficult.

The present invention solves the above problems,
Improve the efficiency of wave energy recovery, reduce costs,
It is an object to provide a wave power generation device that facilitates maintenance.

[0006]

In order to solve the above-mentioned problems, the wave power generation device of the present invention has a plurality of fan-shaped flap type floats on the outer periphery of a floating structure moored on the ocean, with a horizontal axis in the tangential direction thereof. It is rotatably provided around the center, an air tank opened to the sea surface is provided in the floating structure, and a vertically movable float is provided in the air tank, and the fan flap float and the movable vertically in the floating structure. It is characterized in that it is provided with a power generation means for converting motion caused by float waves and sea level changes into electricity.

[0007]

With the above structure, the energy of waves is efficiently recovered even if the direction of the wind changes due to the rotation of the plurality of fan-type flap type floats installed on the outer periphery of the floating structure, and the sea level fluctuation can be prevented by the vertically movable float. Energy is recovered.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a wave power generation device according to an embodiment of the present invention, and FIG. 2 is a partial sectional side view thereof.

Reference numeral 1 is an octagonal shape in plan view, which has a speed increasing bank 1A facing the sea surface in each tangential direction and recessed in an arc shape, and a cylindrical air tank 1B opening to the sea surface in the center. Established, each speed levee
It is a floating structure in which bearing bases 1C are radially projected between 1A.
It is moored by four chains 2. In addition, each speed-up bank 1A of the floating structure 1 has a rotary shaft that is axially supported by a bearing base 1C.
A fan-shaped flap type float 3 is incorporated so as to be rotatable about a horizontal axis by 3A. Further, a vertically movable circular float 4 is provided in the air tank 1B at a position in contact with the sea surface.

Inside the floating structure 1, there are provided power generating means for converting the movements of the fan-shaped flap type float 3 and the vertically movable circular float 4 due to the waves and sea level changes into electricity.
First, the power generation means connected to the fan-shaped flap type float 3 will be described with reference to FIGS. 3 and 4.

A hydraulic cylinder 6 is rotatably mounted on the inner wall of the floating structure 1 by a universal bearing stand 5 at its central portion, and one end of a rotary support arm 7 is fixed to a rotary shaft 3A of a fan flap float 3. The piston rod 6A of the hydraulic cylinder 6 is rotatably connected to the other end of the rotation support arm 7 by a pin 8. The oil chamber of the hydraulic cylinder 6 is connected to the oil chamber of the reciprocating cylinder 10 by a hydraulic hose 9, the piston rod 10A of the reciprocating cylinder 10 is connected to the centering cam device 11, and the centering cam device 11 is accelerated. Generator 12 through machine 12
Connected to. Further, the generator 13 is connected to the storage tank 14. These reciprocating cylinders 10, centering cam device 11, gearbox
12, the generator 13, and the storage tank 14 are installed in the floating structure 1.

With the above structure, when a wave acts on the floating structure 1, the fan-shaped flap type float 3 is moved, and
By passing 1A, the rotary motion is improved and the rotary support arm 7
The circular arc movement becomes active. Further, this circular motion is applied to the hydraulic cylinder 4, its hydraulic pressure is guided to the reciprocating cylinder 10, and is converted into rotary motion by the centering cam device 11, and this rotary motion is transmitted via the gearbox 12 to the generator 13 Is led to generate electricity. The generated electricity is stored in the storage tank 14.

Next, the power generation means connected to the vertically movable circular float 4 will be described with reference to FIG. A machine room 16 having an air hole 15 is provided at the top of the air tank 1B, and a vertically movable circular float 4 is connected to a piston rod 18 via a connecting rod 17 in the machine room 16.
A vertical movement recovery hydraulic cylinder 18 with the tip of A fixed is installed, and the oil chamber of the recovery hydraulic cylinder 18 is connected to the oil chamber of the reciprocating cylinder 20 by a hydraulic hose 19.
The piston rod 20A of 20 is connected to the centering cam device 21. Further, the centering cam device 21 is connected to a generator via a speed increasing device, and the generator is connected to an electric storage tank (neither is shown), similarly to the power generating means of the fan flap type float 3 described above. There is. These reciprocating cylinder 20, centering cam device 21, gearbox,
The generator and the storage tank are installed in the machine room 16.

With the above structure, when a wave acts on the floating structure 1, the sea surface in the air tank 1B fluctuates, and the vertically movable circular float 4 moves vertically due to the sea surface fluctuation. The vertical movement of the vertically movable circular float 4 causes the recovery hydraulic cylinder to move.
In addition, the hydraulic pressure is applied to the reciprocating cylinder 10 and converted into rotary motion by the centering cam device 11, and this rotary motion is guided to the generator via the gearbox to generate electric power. The generated electricity is stored in the storage tank.

As described above, by providing the fan-shaped flap type float 3 and its power generation means, and the vertically movable circular float 4 and its power generation means, it is possible to efficiently recover the energy of waves and sea level fluctuations. In particular, by disposing a plurality of fan-shaped flap type floats 3 on the outer circumference of the floating structure 1, the wave energy can be effectively recovered even if the direction of the waves changes due to the wind direction or the like. Further, since the chain 2 is used as the mooring type, it can be easily installed at any place, the installation cost can be reduced, and the power can always be efficiently generated without being affected by the change in the sea level. Furthermore, maintenance can be facilitated.

In this embodiment, the air tank 1B has a cylindrical shape,
Although the vertically movable float in the air tank 1B is a circular float, it goes without saying that the shape of the air tank 1B is not limited to a cylinder, and the shape of the float is not limited to a circle.

[0017]

As described above, according to the present invention, by providing the fan-shaped flap type float and its power generating means, and the vertically movable float and its power generating means, the energy of waves and sea level fluctuations can be efficiently recovered. it can. In particular, by disposing a plurality of fan-type flap-type floats on the outer periphery of the floating structure, the wave energy can be effectively recovered even if the direction of the waves changes due to the wind direction. In addition, since the mooring type is used, it can be easily installed at any place, the installation cost can be reduced, and the power can always be efficiently generated without being affected by changes in the sea level. Furthermore, maintenance can be facilitated.

[Brief description of drawings]

FIG. 1 is a plan view of a wave power generation device according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional side view of the same wave power generation device.

FIG. 3 is a side view of a power generation unit using a fan-shaped flap type float of the same wave power generation device.

FIG. 4 is a plan view of an essential part of FIG.

FIG. 5 is a perspective view of a conventional wave power generation device.

[Explanation of symbols]

 1 Floating structure 1A Accelerator bank 1B Air tank 1C Bearing base 2 Chain 3 Fan flap type float 4 Vertical movable circular float 5 Universal bearing base 6 Hydraulic cylinder 7 Rotation support arm 8 pin 9,19 Hydraulic hose 10,20 Reciprocating cylinder 11, 21 Centering cam device 12 Speed increaser 13 Generator 14 Storage tank 15 Air hole 16 Machine room 17 Connecting rod 18 Vertical movement recovery hydraulic cylinder

Claims (1)

[Claims] 1. The outer periphery of a floating structure moored offshore,
A plurality of fan-shaped flap type floats are provided rotatably around a horizontal axis in the tangential direction, an air tank opening to the sea surface is provided in the floating structure, and a vertically movable float is provided in the air tank, and the floating body is provided. A wave power generation device, characterized in that a power generation means for converting the waves of the fan-shaped flap type float and the vertically movable float and the movement due to sea level fluctuations into electricity is provided in the structure.