JPS58174168A - Generator driven by wave force - Google Patents

Abstract

PURPOSE:To form effectively compressed air to improve efficiency of energy conversion by converting the motion of an arm mounted on a float to the piston motion of a cylinder for compression of air to introduce the formed air into an accumulator on land for driving and air motor or the like. CONSTITUTION:A swing arm 3 provided on the end with a float 2 and swung by the change in wave height is supported on the outer surface of a container floating on the sea. The motion of the swing arm 3 is converted to the eciprocating motion of a piston 12 in an air compressing cylinder 11 incorporated in the container by a motion converting mechanism 10, and compressed air thus produced is introduced into an accumulator 8 disposed on land through a flexible hose 27. The compressed air supplied from the accumulator 8 drives an air motor 30 or air turbine and a generator 9 directly connected thereto the provide electric energy.

Description

[Detailed description of the invention] The present invention relates to a wave power generation device.

BACKGROUND OF THE INVENTION Recently, much research has been conducted on converting naturally occurring solar, wind, or wave energy into electrical energy without using fuel, that is, fossil energy, thereby contributing to resource conservation.

Among these, in so-called wave power generation devices that utilize wave power, for example, a large-scale structural raft is floated on the main body of the sea, and this structural raft is prevented from rocking due to some waves, and the structural raft is A plurality of air chambers into which the sea surface is introduced are provided at the bottom, and when waves occur, the sea surface in the air chambers moves up and down like a piston, and the air flow generated by this is used to directly direct the air to the above-mentioned direction. Some are configured to generate electricity by turning a turbine.

However, in such a wave power generation device, since the sea surface directly compresses the air in the air chamber, it is necessary to increase the pressure in the air chamber in order to effectively convert the vertical movement of the sea surface into air flow. On the other hand, if the pressure in the air chamber is increased, this pressure will prevent the sea surface from moving up and down, resulting in the problem that wave energy cannot be efficiently converted into electrical energy.

Also, when the air chamber moves up and down at sea level, there is always a compression phase and an intake phase, and while the air flow generated in the compression phase is introduced into the air turbine, each air chamber is controlled to suck in outside air during the intake phase. There is also the problem that it cannot be done every time, and that this process requires a huge amount of manufacturing cost.

An object of the present invention is to provide a wave power generation device that solves the problems in the conventional wave power generation devices. .

Hereinafter, the present invention will be specifically described based on embodiments shown in the drawings.

FIG. 1 is an overall external view of the device of the present invention.

A cylindrical container (1) floating on the sea surface has a swinging arm (3) that has a floating body (2) such as a plastic ball with air sealed in its tip that can swing around an axis (3a). It is a must to support. In the illustrated example, a cylindrical container (1
) A total of four swing arms (3) are supported on the outer surface of the swing arm (3). The container (1) is of a water-resistant sealed type and has the swinging arm (
The shaft (3a) of 3) is supported via a seal member (4). (5) is a pipe for introducing outside air that protrudes from the top surface of the container (1), and its tip is bent into an inverted U shape to prevent rainwater from entering the container (1). In addition, the container (
1) In order to prevent the container itself from shaking due to waves as much as possible, it is preferable to fix a ballast (not shown) to the lower part of the container (1) or suspend an anchor (6).

(7) is a flexible pressure hose connected to the container (1), and an accumulator (8) disposed on land that supplies compressed air.
lead to.

Compressed air supplied from the accumulator (8) turns an air turbine and a generator (9) to generate electricity.

the swinging arm (3) supported on the outer surface of the container (1);
In order to generate compressed air to be guided to the accumulator (8) by the swinging of the air, for example, the following procedure is performed.

FIG. 2 schematically shows the internal structure of the container (1) and the entire power generation device.

In FIG. 2, the rotation of the shaft (3a) of each swing arm (3) is converted by a motion conversion mechanism αe into a reciprocating motion of a piston 02 of an air compression cylinder αD corresponding to each swing arm (3). . To do this, for example, a pinion gear 03 is fixed to the end of the shaft (3a) extending into the container (1), and a rack α9 that moves integrally with the four rods 04 of the piston 02 is meshed with the pinion gear 03. The rack (2) is guided by appropriate support means (not shown) so that it can reciprocate in the direction of movement of the piston 02.

The motion converting mechanism may be constructed using a crank mechanism in addition to the rack and pinion as described above.

When the swing arm (3) rotates in the direction of the arrow R, the rack α9 and the piston 02 move forward in the direction of the arrow R, and conversely, when the swing arm (3) rotates in the direction of the arrow S, the rack α9 and the piston 02 move forward in the direction of the arrow S. The rack 0ω and the piston α2 move back in the direction of arrow 8.

The air compression cylinder 01) is a piston (
A crane-type cylinder (lla) (reciprocating cylinder) may be used, which performs air compression during both the forward and backward movements of 2), or performs air compression only during the forward movement of the piston 02. Any type of cylinder (llb) may be used.

The reciprocating cylinder (lla) is provided with check valves (17+CI seconds) in the upper and lower parts of the cylinder chamber 06), respectively, so that only suction can be performed. The discharge pipes (23) (241) are installed through the check valve C)1) (2) so that air can only be discharged to the lower part.These discharge pipes Q3 (goods) are connected to the main discharge pipe (5).

When piston α2 moves forward in the direction of arrow r, check valve αQ
opens and outside air is sucked into the lower air chamber (■), and at the same time the check valve (■) opens and the air compressed by the upper pneumatic chamber fin is discharged to the exhaust pipe (sha).

At this time, since the check valve □ is closed, the compressed air discharged to the discharge pipe is not sent from the discharge pipe □ to the lower pneumatic chamber ■, but is sent only into the main discharge pipe.

When piston 02 moves back in the direction of arrow S, check valve αη opens and outside air is sucked into the upper pneumatic chamber, and at the same time, check valve ■ opens and air is compressed in the lower pneumatic chamber ■, completely opposite to the above. Air is sent into the exhaust pipe (24) or into the exhaust main pipe.

In this way, the arm (3) was forcibly swung by the waves.
) effectively produces continuous compressed air.

The symbol ＠ in the figure has a compression coil spring that constantly presses the rack a9 downward, which quickly moves the swinging arm (3), which has been rotated in the direction of arrow R due to waves, back in the direction of arrow S. Do it. In this embodiment, when the reciprocating cylinder indicated by the symbol (llb) is used, the weight of the rack α9 and the arm (3) automatically returns the arm (3) in the direction of the arrow S, so the compression coil spring ( C) is not particularly necessary 0 Also, the symbol ■ is the safety valve installed in the accumulator (8), G
l is the air motor, C311 is the generator, (broom is the terminal, money is the electric light line, (goods) is the electric light, and (g) is the manual switching valve to take care of the air motor ■. It does not generate electricity. If not, the switching valve (to) should be set to 1 off. In this case, compressed air will be continuously fed into the accumulator (8) as long as waves are occurring, but the There is no problem since the compressed air is released.

As described above, according to the wave power % actual device according to the present invention, compressed air ff can be effectively generated by wave power, so wave energy can be efficiently converted into electric energy.

In addition, the structure of the compressed air generating container inside the container is simple, and since the container and the land-based accumulator and generator are separated, maintenance is easy, and it is expected to be used as an auxiliary power device in coastal areas. .

[Brief explanation of drawings]

FIG. 1 is an external view showing the entire apparatus of the present invention, and FIG. 2 is a schematic diagram showing the main parts of the present invention.

Claims (3)

[Claims] (1) At least one swinging arm (3) having a floating body (2) attached to its tip and swinging in response to changes in wave height is supported on the outer surface of a container (1) floating on the sea;
The movement of the swing arm (3) is converted into a reciprocating movement of the piston α2 of the air compression cylinder 〇〇 installed in the container (1) using the movement conversion mechanism port (■), and the compressed air generated thereby is converted into a reciprocating movement of the piston α2 of the air compression cylinder The compressed air is introduced into an accumulator (8) placed on land via a flexible hose (7), and the compressed air supplied from the accumulator (8) drives an air motor (2) or an air turbine and a generator (9) directly connected to the compressed air.
) is configured to drive a wave power generation device. (2) The wave power generation device according to claim 1, wherein the motion conversion mechanism Oe is a rack and pinion mechanism. (3) The wave power generation device according to claim 1, wherein the motion conversion mechanism is a crank mechanism.