JP6436416B2 - Wave power generator by time difference drop of floating body and heavy solid - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a wave power generation apparatus by time difference dropping of a floating body and a heavy solid, and more particularly to a wave power generation apparatus that converts wave energy into energy in which a solid falls in space.

Various methods such as pushing out air, pendulums, and overtopping water storage have been tried to convert wave power into electrical energy. Japanese Patent Laid-Open No. 2011-094600 (Patent Document 1) discloses the following invention.
When the wave descends from the position of the weight floating body (A) that is caught by the latch at the rising point by the wave by the combination of the weight floating body (A), the weight floating body (B), and the latch, the falling water surface is the weight floating body (B). The weight floating body (A) does not receive buoyancy and has a distance or time to fall in the space between the water surface positions when the latch is pulled through the bottom surface. Wave power generation by the time-lag fall of a heavy floating body that converts the fall energy into electrical energy.

JP 2011-094600 A

  To date, wave power generation has been tried in various ways using methods such as jumping plates, pendulums, bellows, pistons, and air extrusion. Since the 1970s, when the first oil shock occurred in Japan, development has started to use wave energy on a large scale, and there are still ongoing experiments at sea, but the facilities are large. However, since it is offshore, the equipment cost is high, and none of them are put into practical use.

  Small-scale products that have been put into practical use include buoys for navigation signs equipped with small-scale wave power generators that were developed around 1965, but the use of wave power generation has progressed to date. It can be said that there is not.

  The wave period, height, length, and direction are irregular, change over time, and there are differences depending on the location and topography. In addition, even when considering a large force from constantly changing waves and considering operation with large-scale facilities, problems such as location, cost, and operation occur, so it is compact and has good energy conversion efficiency. It is preferable to create a number of low-cost mechanisms and accumulate the energy.

  The above Japanese Unexamined Patent Publication No. 2011-094600 (Patent Document 1) is the same as the applicant and inventor of the present invention, but after filing the previous invention application, documents are provided to a specific scale electric power company or a government agency. In order to expand the scope of companies that can be implemented, not limited to large companies and specific power generation companies, while sending and searching for implementation companies, it is easy to manufacture and costs to manufacture I thought that the lower the maintenance cost, the better, and I thought that the earlier invention could be realized with a simpler mechanism and mechanism.

  For that purpose, we want to eliminate the parts that are likely to be expensive such as latches and grooves and projections to hook the latches, but if they are removed, the mechanism to drop the space on the weight floating body will not be realized, so what kind of mechanism should be done? While thinking about this, I made an experimental model and thought of a new mechanism during the power generation experiment.

  Although a floating body and a heavy solid are used, there is no connection part that connects the floating body and the heavy solid, and the floating body and the heavy solid are separated. That is, the floating body and the heavy solid can move independently. The mass and area of the floating body are set so that the floating body pushes up the heavy solid as the wave rises. A floating body that moves up and down along the lead rail by the movement of the wave and a heavy solid connected to the generator by a wire, a chain, or the like are installed on the lead rail so that the floating body is downward and the heavy solid is upward.

  The mechanism will be installed on the breakwater. A light bulb or a storage battery is connected to the generator connected to the heavy solid. The load size, the weight of the heavy solid, and the balance of the pulley and gear are set to the optimum ranges so that the falling speed of the heavy solid connected to the generator is slower than the falling speed of the wave.

  The rising of the wave pushes the floating body and the heavy solid on the floating body to the rising point of the wave. When the wave descends, the floating body descends simultaneously with the wave, but the heavy solid connected to the generator falls at a slower rate than the wave descends. The solid falls without receiving buoyancy, and the heavy solid falls with acceleration. The weight solid is the distance until the falling heavy solid catches up with the floating body descending at the same time as the wave descends, or the distance to the position where the floating solid that rises as the wave rises and the falling solid comes into contact with the floating body. Fall in space without receiving buoyancy. The fall energy is converted into electrical energy.

According to the present invention, the following effects can be obtained.
(1) Since it is a solid drop energy, the conversion efficiency is good and the mechanism is simple, so the material, manufacturing, work, and maintenance costs are low.
(2) Provide clean energy that does not emit CO ₂ and is friendly to the natural environment.
(3) The wave period, height, length, and direction are irregular, change over time, and there are differences depending on the location and topography, but the floating body of the present invention only follows the lead rail. Because there is no connection with other parts of the mechanism, the lead rail can be moved up and down freely along with the up and down movement of the wave, and it is not affected by the fluctuation of the sea level due to the time of high tide and low tide. It can generate electricity from waves of several tens of centimeters, and can handle waves of several meters.
(4) Even if the height of the wave is different, it always operates in the range of the length of the lead rail, and can generate electric power corresponding to the constantly changing wave.

It is a perspective view of the wave power generator concerning one embodiment of the present invention. It is a perspective view of the wave power generator concerning other embodiments of the present invention.

FIG. 1 is a perspective view of a wave power generator according to an embodiment of the present invention.
In FIG. 1, reference numeral 1 is a floating body, reference numeral 2 is a heavy solid, reference numeral 3 (3-1, 3-2, 3-3) is a lead column, reference numeral 4 is a wire or chain, reference numeral 5 is a top plate, reference numeral 6 is The generator, reference numeral 7 is a foundation, and reference numeral 8 is a weight. The generator 6 includes, for example, a DC motor 90V, a pulley, a rotating gear, a chain, and the like.

  As shown in FIG. 1, the floating body 1 is installed on the lead support 3 so as to move along the top and bottom of the wave, and the heavy solid 2 is placed thereon. The heavy solid 2 is connected to the motor of the generator 6. In the wave rise, the waves lift the floating body 1 and the heavy solid 2.

  Taking advantage of the slower rotation of the motor of the generator 6 as the power consumption of the generator 6 increases, changing the weight of the heavy solid, controlling the rotation of the motor with the control device, or the size of the gear The falling speed of the heavy solid 2 is made slower than the speed at which the floating body 1 drops as the wave descends, for example, by changing the combination. Then, the heavy solid 2 falls in the space.

  Since the buoyancy is not received when the heavy solid 2 falls, theoretically, it is possible to extract the same energy as the solid falling motion and the power generation output of the water turbine. Compared with the conventional wave power generation, which has a power generation efficiency of about 20%, the power generation efficiency is better, and it is possible to generate power from waves of several tens of centimeters.

<Example>
While changing the load of the bulb connected to the generator 6 in the above mechanism, the falling speed of heavy solids and the rotation speed of the generator were observed. Depending on the size of the load connected to the generator, the heavy solid was dropped at a drop speed sufficiently slower than the wave descending speed, and the lighting of the bulb was confirmed.

  Wave up and down movement, wave up and down movement speed at each place near Chigasaki Yanagijima coast fishing area, coastline, near tetrapot, near pier concrete fence, stone-built masonry pond, bridge bridge, etc. Observed the state of crushing.

  Even on the coastline, we were able to confirm that the waves were moving up and down in a state where there were few breaking waves on the shelf steps and the part where the concrete wall was drawn. Experiments with equipment made of the above materials at Chigasaki Yanagijima coast, wave height 50cm-100cm. When a mechanism was installed on the breakwater and the experiment was conducted, it was confirmed that the generator would rotate, turn on, and fall into the space at a distance until the heavy solid contacted the floating body.

  As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to this example. For example, as shown in FIG. 2, a mainspring spring 9 may be used instead of the weight 8 of FIG.

It is energy that does not emit clean CO ₂ and has a wide range of uses as inexpensive power.

DESCRIPTION OF SYMBOLS 1 Floating body 2 Heavy solid 3 (3-1, 3-2, 3-3) Lead support | pillar 4 Wire or chain 5 Top plate 6 Generator 7 Foundation 8 Weight 9 Spring spring

Claims (1)

A floating body which moves up and down along the lead rail by wave action, and a weight solids by connecting to the generator by a wire or chain, floating body placed downward, the lead rail so that the weight solids is upward,
There is no connection part connecting the floating body and heavy solid, the floating body and heavy solid can move independently,
The floating body pushes up heavy solids with rising waves,
Lead by the movement of the wave by setting the load size, the weight of the heavy solid, the balance of the pulley and gear so that the falling speed of the heavy solid connected to the generator is slower than the falling speed of the wave A heavy solid is dropped in a space formed between a floating body that moves up and down along the rail and a heavy solid whose falling speed is slower than the wave descending speed , and the falling energy is converted into electric energy. , Wave power generator.