JPS62291306A - Oceanic waves modulator - Google Patents

Abstract

PURPOSE:To reduce the cost of facilities, operation, and maintenance by providing a pair of left and right-handed waves-collecting plates whose opening width on the face of the offing is larger than that on the face of the coast. CONSTITUTION:A waves-collecting plate 1 is almost vertically held on the sea surface 5 by a floating tank 2 fixed to the outside of the plate 1 and a mooring cable 3 whose lower end is connected to a weight 4 set on the seabed 6. The opening width (a) toward the offing as viewed planimetrically is greater than that (b) toward the coast, that is (a)>(b). The natural offshore waves 7 of low level in natural offshore waves region A come into between the plates 1, where the width is narrowed from (a) to (b) in a collected waves modulating region B, the wave height/wave length ratio is increased, and surf waves 8 of high level are formed in a surf waves region C. Since the waves are modulated by utilizing the energy of waves, the needs for power can be eliminated, and the oceanic waves modulator can be installed easily because of the absence of movable part.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an ocean wave modulation device capable of generating surf waves.

[Prior art] Surfing has become popular as a marine leisure activity in recent years.
Surfing requires wave heights above a certain level, and there is a limit to the sea area where you can play using only natural waves. Therefore, it is possible to create surf waves using a wave-making device used in swimming pools and the like.

[Problems to be Solved by the Invention] However, conventional wave-making devices require power to create waves by reciprocating the wave-making plate using a drive device such as a fluid pressure cylinder, and the wave-making scale is also limited. Since it is much larger than a swimming pool, there are problems such as the equipment becomes larger and construction becomes difficult, and the installation cost and operation and maintenance cost become expensive.

The present invention has been made in view of the above-mentioned circumstances, with the object of providing a low-cost ocean wave modulation device that does not require power and is easy to install.

[Means for Solving the Problems] The present invention has a configuration in which a pair of left and right wave collecting plates are provided, in which the opening width on the side facing offshore is larger than the opening width on the side facing the coast when viewed in plan. .

(Operation) A natural single wave with a relatively low wave height is focused and modulated by a wave collector plate, and a surf wave with a relatively high wave height is created.

[Example] Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

Figures 1 to 3 show an embodiment of the present invention, in which reference numeral 2 indicates a pair of left and right wave collecting plates arranged substantially vertically, and 2 collects waves such that the attitude of the wave collecting plates is maintained substantially vertically. A buoyancy tank fixed to the outside of the plate L, 3 a mooring cable such as a wire lobe or chain whose one end is connected to the wave collecting plate 1, 4 a weight connected to the lower end of the mooring cable 3, 5 a sea surface, 6 is the ocean floor, 7 is a natural wave, and 8 is a surf wave.

When viewed from above, the opening width of the wave collecting plate l on the side facing offshore is a.
The opening width on the side facing the coast is b, and a>b. Also, the height of the wave collector plate is determined so that the upper end of the wave collector plate l is higher than the top of the wave, and the lower end is lower than the bottom of the wave.

This is to prevent the waves from exceeding the wave collecting plate l and to collect wave energy effectively.

The natural single wave 7 with a relatively low wave height in the natural single wave area A enters between the left and right wave collecting plates 1.1, is narrowed from width a to b in the wave collecting modulation area B, is focused and modulated, and has a stableness (wave height). /wavelength ratio) is increased, and surf waves 8 with a relatively high wave height are created in the surf wave region C.

Now, the wave height at the entrance of the wave collecting plate 1 in the natural single wave area A is H
A wave with a wave height of &% at the outlet of the wave collecting plate can be obtained.

In addition, in the embodiments of the present invention, the case where the wave collecting plate is installed substantially vertically has been described, but there is no particular problem in practical use even if the wave collecting plate is swayed by the wave force and tilted to some extent, and other conditions do not deviate from the gist of the present invention. It goes without saying that various changes may be made within this document.

[Effects of the Invention] According to the ocean wave modulation device of the present invention, it is possible to perform modulation using the energy of waves, so power is not required and energy can be saved, and a non-movable wave collecting plate is installed. Since it is only necessary to do the following, construction work can be easily carried out, and installation costs and operation and maintenance costs can be reduced, and various other excellent effects can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the ocean wave modulation device of the present invention;
2 is a view taken in the direction of arrows ■-■ in FIG. 1, and FIG. 3 is a view taken in the direction of arrows ■--■ in FIG. In the figure, 1 is a wave collecting plate, 2 is a buoyancy tank, 3 is a mooring cable, and 4 is a weight.

Claims (1)

[Claims] 1) An ocean wave modulator characterized in that a pair of left and right wave collecting plates are provided, the opening width on the side facing offshore being larger than the opening width on the side facing the coast when viewed in plan.