JPS63259169A - Wave power generator - Google Patents

Abstract

PURPOSE:To improve efficiency of generating power, by providing a float and a balance weight, which perform a vertical motion in a reverse phase to each other following a wave movement, in a caisson structure, which serves also for a breakwater, and generating the electric power to be induced respectively by plural power generating units in accordance with the vertical motion of these float and balance weight. CONSTITUTION:If a wave W performs in-out flow motions in a front chamber 14 from an opening part 12 of a caisson structure 10 serving also for a breakwater, a float 18 performs a vertical motion following a movement of the wave W. While a balance weight 20, connected to the float 18 through a connecting rod 26, performs a vertical motion in a reverse phase to the float 18. As the result, each conductor 34b, which is provided being respectively arranged in the first shaft 22 and the second shaft 24 and cutting magnetic flux of each magnetic field generator 34a constituting each power generating unit 34, generates electric power to be respectively induced. That is, the float 18 performs one time vertical motion enabling the two power generating units 34 to simultaneously generate the electric power to be induced. Here the generating unit 34 sets weight in a side of the float 18 larger than the weight in a side of the balance weight 20 thus improving the response characteristic of the float 18 for the movement of the wave.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a wave power generation device, and particularly to one with improved power generation efficiency.

(Prior Art) As is well known, the oil crisis has led to calls for the development of alternative energies, and the use of wave energy has been proposed as one of them.

The idea of using wave energy has long been considered, but this energy is quite rare and highly variable, so if we tried to use it at facilities in East Germany, we would have to compete with existing energy sources in terms of cost. I can't.

Therefore, research is being conducted into converting wave energy into electrical energy using, for example, breakwaters, which are port facilities.

This method is called a wave power generation caisson, and the caisson frame, which also functions as a breakwater, is submerged in the water, and an air chamber with wave intake openings is provided inside the exposed body. As the water surface moves up and down, it compresses the empty air, creating an airflow that drives a turbine to rotate and induces electricity.

However, in such a wave power generation device, wave energy is first converted into an air flow and then further converted into electric energy, so there is a problem that there are many steps and the conversion efficiency is low.

In order to solve this problem, for example,
As seen in Publication No. 5.378, a float that moves up and down with the up and down movement of waves is positioned above the water surface, a magnetic field generator is attached to the support shaft of the float, and a coil interlinked with the magnetic field of this generator is Devices for inducing electrical power have been proposed.

However, this wave power generation device also had the following drawbacks.

(Problems to be Solved by the Invention) In other words, the wave power generation device disclosed in the above publication is more efficient than one in which wave energy is converted into individual energy and then replaced with electrical energy. ,
Since electricity is generated by simply using the vertical movement of the float, it is insufficient to effectively utilize the relatively rare source of wave energy, as mentioned above.

The present invention has been made in view of these conventional problems, and its purpose is to provide a wave power generation device that can efficiently utilize wave energy.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a wave power generation device including a float that moves up and down with waves, and one end of which is connected to the upper end of the float and moves in a vertical plane. a swingably supported connecting iron; a balancing weight connected to the other end of the connecting iron;
A power generation unit is provided on each of the float and the balancing weight and induces electric power in accordance with the vertical movement thereof, and the force acting on the connecting rod is larger on the float side than on the balancing weight side. I did it like that. .

(Function) According to the wave power generation device having the above configuration, a float and a balancing weight are provided at both ends of the swingable connecting rod, and a power generation unit is installed on each of the float and the balancing weight. Because there are
When the float moves up and down with the waves, the balancing weight moves up and down in the opposite phase, and electric power is induced in each power generation unit.

Further, since the force acting on the connecting rod is set to be larger on the float side, the float can efficiently follow the vertical movement of the water surface.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIGS. 1 and 2 show an embodiment of a wave power generation device according to the present invention.

The wave power generation device shown in the figure is applied to the aforementioned caisson which also serves as a breakwater.

In this embodiment, the caisson frame 10 installed in the water is made of reinforced concrete, and a front chamber 14 having an opening 12 is provided on the front side located in the direction of movement of the waves W, and a front chamber 14 having an opening 12 is provided at the rear of the front chamber 14. is provided with a separate rear chamber 16.

A float 18 is provided in the front chamber 14 and is floated on the upper surface of the wave W entering the front chamber 14.
6, a balancing weight 20 is installed.

The float 18 and the balancing weight 20 have first and second shafts 22,24 fixedly attached to their upper surfaces, respectively.
The shafts 22.24 extend upwardly through the upper walls of the front and rear chambers 14 and 16, respectively, and the upper ends of the shafts 22.24 are connected to both ends of the connecting rod 26 by pins 28, respectively.

The center of the connecting rond 26 is the front and rear chambers 1 of the caisson frame 10.
4. The bottle 32 is attached to the support shaft 30 erected on the base between 16 and 16.
is connected at its longitudinal center via the connecting rod 2
6 is configured to be swingable in a vertical plane using the bin 32 as a fulcrum.

The weight R on the float 18 side is set larger than the weight on the balance weight 20 side, so that the gravity acting on the connecting rod 26 in a natural state is larger on the float 18 side.

Note that in order to increase the force acting on the connecting rod 26 on the float 18 side, the weight including the shaft is balanced between the float 18 side and the balancing weight 20 side, and the weight of the connecting rod 26 on the bin 3
Balance the position of 2! It may be shifted to the 20 side.

Further, on the outer periphery of the first and second shafts 22.24,
A power generation unit 34 is installed in each.

The power generation unit 34 includes a magnetic field generating section 34a composed of an electromagnetic coil or a permanent magnet, and a conductor 34b that intersects the magnetic flux of the magnetic field generating section 34a.In the embodiment, the magnetic field generating section 34a is provided on the caisson frame 10. , conductor 34b
A large number of shafts are arranged in parallel in the radial direction of the first and second shafts 22 and 24 (direction perpendicular to the plane of the paper).

In the wave power generator configured as described above, when waves flow in and out of the opening 12 of the caisson frame 10 into the front chamber 14,
The float 18 moves up and down in accordance with the wave motion of the waves W.

As a result, as shown in the principle of power generation in FIG. 2, the conductor 34b disposed on the first shaft 22 is
Since the magnetic flux of a is cut, electric power is induced in the conductor 34b.

On the other hand, when the float 18 moves up and down, the balancing weight 20 connected via the connecting iron 26 is also moved up and down in the opposite phase to the float 18.

Therefore, the conductor 34b disposed on the second shaft 24 also
The magnetic flux of the magnetic field generator 34a is cut off, and electric power is similarly induced in the conductor 34b.

In other words, in the wave power generation device of this embodiment, electric power can be simultaneously induced in the two power generation units 34 by one rise or fall of the float 18.

1 on the float 18 side is larger than on the balanced tI120 side, so the float 1 raised by the inflow of the wave W
8 quickly descends as the wave W flows out, so it can quickly follow the vertical tooth movement of the wave W.

(Effects of the Invention) As described above in detail in the embodiments, according to the wave power generation device according to the present invention, power can be induced in a plurality of power generation units at the same time by rising or falling waves, thereby improving power generation efficiency. significantly improve.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the device of the present invention, and FIG. 2 is a diagram explaining the principle of power generation. 10... Caisson frame 12... Opening 14...
・Anterior chamber 18... Float 20... Balance @
22...first axis 24...second axis
26...Connecting rod 28...Bin 30
... Support shaft 32 ... Bin 34 ... Power generation unit W ... Wave Patent applicant Obayashi Co., Ltd.
Person Patent Attorney - Color Ken Shaft Circumference
Published by Patent Attorney Masaru Matsumoto Figure 1 Figure 2

Claims (1)

[Claims] a float that moves up and down with waves; a connecting rod that has one end connected to the upper end of the float and is supported swingably in a vertical plane; a balancing weight that is connected to the other end of the connecting rod; A power generating unit is provided on each of the float and the balancing weight and induces electric power as the float moves up and down,
A wave power generation device characterized in that the force acting on the connecting rod is greater on the float side than on the equalizing weight side.