JPH06330842A - Wave power generating set - Google Patents

Abstract

PURPOSE:To provide a wave activated generating set that improves the recovery efficiency of wave energy, reducing the cost of production, and gets maintenance facilitated. CONSTITUTION:A rocking body 3 is installed, as being rocking motion around the axial center of a turning shaft 3A pivotally supported in a gap with a wall 1A, in each paritioned part 1B of a floating structure 1 to be formed by the partioned wall 1A radially installed from the central part, and a windmill 4 and an air hole 6 are installed on an upper part in an air tank 1E installed in the structure 1, while a power generating means, which converts a rotary motion by an air flow to be produced by a rokcing motion due to waves of the rocking body 3 and a sea surface variation in the windmill 4 into electricity, is installed in this floating structure 1 as the constitution. Accordingly, as plural pieces of rocking bodies 3 are set up on the circumference of this 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, so that it can be easily set up in an optional position, whereby the cost of installation is reducible and simultaneously maintenance is also achievable in an easy manner.

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. 8 is vertically constructed by a fixed structure 33 having a U-shaped opening 32 and a horizontal shaft 34A axially 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 as the rocking body 34 rotates back and forth, and the rocking energy is converted into electricity.

[0004]

However, according to the conventional fixed wave power generation device 31 described above, the rocking of the rocking member 34 is caused by the change of the direction of the waves due to the wind direction or the decrease of the sea level 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 is to provide a partition wall radially extending from the center of a floating structure moored on the ocean, and partition walls between the walls. Is formed from a floor break and a reaction force breakwater provided on the center side, and an air tank opening to the sea surface is provided at the center, and a rocking body is pivotally supported between the walls at each of the divisions. It is provided so as to be swingable around the axis of a horizontal axis, and a windmill and a ventilation hole are provided in the upper part of the air tank, and it is generated in the floating structure due to the rocking motion of the rocker due to waves and the sea level fluctuation of the windmill. It is characterized in that it is provided with a power generation means for converting the rotary motion due to the air flow to electricity.

[0007]

According to the above structure, the oscillator installed in each section of the floating structure swings when the waves act on the floating structure, and further swings greatly due to the return of the waves by the reaction breakwater. Energy of waves is efficiently recovered. Also, due to sea level fluctuations, an air flow is generated in the air tank, the wind turbine rotates, and the sea level fluctuation energy is recovered. Further, by installing a plurality of oscillators on the outer circumference of the floating structure, the energy of the waves can be efficiently recovered even if the direction of the waves changes due to the wind direction.

[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.

Numeral 1 is a substantially octagonal shape in plan view, which is provided with partition walls 1A radially from the central portion, and partition parts 1B between the walls 1A are
It is a floating structure that is formed by a floor bottom 1C with a sloped air tank structure and a reaction breakwater 1D provided on the center side, and has a cylindrical air tank 1E that opens to the sea surface in the center. Moored by chain 2. Further, as shown in FIG. 4, bearing bases 1F are provided below both sides of each partition wall 1A.

Further, in each of the divided portions 1B of the floating structure 1, a rocking body (Damma-type rocking body) is oscillatably oscillated by a rotary shaft 3A which is rotatably supported by a bearing stand 1F and which is perpendicular to the radiating direction. (Also called a column) 3. The oscillating body 3 oscillates when waves act on the floating structure 1, and further oscillates greatly due to the return of the waves by the reaction force breakwater 1D.

Further, a windmill 4 is provided on the top of the air tank 1E, and a machine room 5 having a large diameter is provided on the reaction force breakwater 1D, which is concentric with the air tank 1E and has a large diameter, and a ventilation hole is formed on the inner wall of the air tank 1E.
A plurality of open / close valves 6 communicating with 5A are provided. This air tank
The movement of the air flow in 1E is caused by sea level fluctuations, the on-off valve 6 provided on the inner wall of the air tank 1E operates, air is entrained from the ventilation holes 5A, and a flow velocity is generated to rotate the wind turbine 4. To do.

Further, in the partition wall 1A of the floating structure 1, a power generation means for converting the swinging motion of the oscillator 3 into electricity is provided. The power generation means connected to the oscillator 3 will be described with reference to FIGS. 3 and 4.

The cylinder 7 is installed and the rotary shaft 3A of the oscillator 3 is
A rotation transmission pulley 8 is fixed to the rotation transmission pulley 8, and the rotation transmission pulley 8 is connected to a piston 7A of a cylinder 7 via a transmission rod 9. Further, the air chamber 7B of the cylinder 7 is connected to the air chamber of the reciprocating cylinder 11 by the hose 10, the piston rod 11A of the reciprocating cylinder 11 is connected to the centering cam device 12, and the centering cam device 12 is connected to the speed increaser. It is connected to the generator 14 via 13. Further, the generator 14 is connected to the electricity storage tank 15. Also,
A plurality of open / close valves 7C that communicate with the outside of the air chamber 7B of the cylinder 7.
Is provided.

With the above structure, the swing motion of the swing body 3 is
By adjusting the on-off valve 7C of the cylinder 7, it is converted into the air pressure of the air chamber 7B of the cylinder 7 via the rotation transmission pulley 8 and the transmission rod 9, and the air pressure is guided to the reciprocating cylinder 11 and rotated by the centering cam device 12. It is converted into motion, and this rotary motion is guided to the generator 14 via the speed increaser 13 to generate power. The generated electricity is stored in the electricity storage tank 15.

Further, in the machine room 5, a power generation means for converting the rotational movement of the wind turbine 4 into electricity is provided. The power generation means connected to the wind turbine 4 will be described with reference to FIG. The rotation shaft of the wind turbine 4 is connected to the rotation converter 16, and this rotation converter 16 is connected to the generator via the speed increaser in the same manner as the power generation means of the oscillating body 3 to connect the generator to the storage battery (Not shown) as well.

With the above-described structure, the rotational movement of the wind turbine 4 is guided to the generator via the rotation converter 16 and the gearbox to generate electric power. The generated electricity is stored in the storage tank. Another embodiment of a power generation means provided in the partition wall 1A of the floating structure 1 for converting the swing of the oscillator 3 into electricity will be described with reference to FIGS.

A gear pulley 21 is fixed to the rotary shaft 3A of the oscillating body 3, and the gear pulley 21 is connected via a transmission gear 22 to a rotation converter.
The rotation converter 23 is connected to a generator 25 via a speed increaser 24. Further, the generator 25 is connected to the storage tank 26.

With the above structure, the swing motion of the swing body 3 is
It becomes an arc motion of the gear pulley 21, and this dust arc motion is guided to a rotation converter 23 via a transmission gear 22 and converted into a rotation motion by the rotation converter 23, and this rotation motion is generated via a speed increaser 24. It is led to 25 and generates electricity. The generated electricity is stored in the electricity storage tank 26.

As described above, by providing the oscillating body 3 and its power generating means, and the wind turbine 4 and its power generating means, it is possible to efficiently recover the energy of waves and sea level fluctuations. In particular, by disposing a plurality of oscillators 3 on the outer periphery 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.

[0020]

As described above, according to the present invention, by providing the oscillator and its power generating means, and the wind turbine and its power generating means, it is possible to efficiently recover the energy of waves and sea level fluctuations. In particular, by disposing a plurality of oscillators on the outer circumference of the floating structure, the wave energy can be effectively recovered even if the direction of the waves changes due to the wind direction or the like. Also, since it is a mooring type, it can be easily installed in any place,
The installation cost can be reduced, and the power can always be efficiently generated without being affected by changes in 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 an oscillator of the same wave power generation device.

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

FIG. 5 is a side view of a power generation unit using an oscillator of a wave power generation device according to another embodiment of the present invention.

FIG. 6 is a side view of FIG.

FIG. 7 is a plan view of an essential part of FIG.

FIG. 8 is a perspective view of a conventional wave power generation device.

[Explanation of symbols]

 1 Floating structure 1A Divided wall 1B Divided part 1C Floor bottom 1D Reaction breakwater 1E Air tank 1F Bearing stand 2 Chain 3 Oscillator 4 Windmill 5 Machine room 5A Vent hole 6 Open / close valve 7 Cylinder 8 Rotation transmission pulley 9 Transmission rod 10 Hose 11 Reciprocating cylinder 12 Centering cam device 13, 24 Speed increaser 14, 25 Generator 15, 26 Storage battery 16, 23 Rotation converter 21 Gear pulley 22 Transmission gear

Claims (1)

[Claims] 1. A floating structure moored offshore is provided with partition walls radially from the center, and each partition between the walls is formed from a floor break and a reaction force breakwater provided on the center side, and the center is formed. The air tank open to the sea surface is provided in the section, and the rocking body is provided in each of the dividing sections so as to be swingable around the axis of a horizontal shaft pivotally supported between the walls, and the upper part in the air tank is provided. A wind turbine and a ventilation hole are provided, and a power generation unit is provided in the floating structure for converting the rocking motion of the rocking body due to waves and the rotary motion of the wind turbine due to an air flow generated by a change in sea level into electricity. Wave power generator.