A method of generating electricity using the difference in tide levels caused by the rise and fall of the ocean

Abstract

To solve the problem that conventional power generation only is insufficient in a present age in which an energy problem of decarbonization is being faced.SOLUTION: One method is to generate power by storing sea water in a reservoir at high tide, causing it to flow into an empty reservoir, and rotating a water turbine by the flow. The sea water used for power generation is returned to the sea at low tide, and sea water is stored at high tide again. Storage and drainage of sea water are repeated all year round for power generation and power transmission. Another method is to generate and transmit power by guiding sea water to a reservoir using a water conduit pipe, floating a floating body there, converting a vertical movement of the floating body by a change in low and high tides of the sea to a greater rotational movement with a worm gear, and changing the rotation to a high speed rotation with a gear for rotating a power generator.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a method for artificially generating electrical energy. [Background technology]

[0002] Currently, there are various methods for generating electricity, such as hydroelectric power generation, thermal power generation, nuclear power generation, wind power generation, solar power generation, and geothermal power generation, and the form of power generation varies depending on the power generation method. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP2003-65201 Public Relations [Patent Document 2] Patent Publication No. 2021-188598 [Non-patent literature]

[0004] [Non-Patent Document 1] "Illustrated Guide to Natural Energy", Kodansha, p.85 [Non-patent document 2] "The Best Guide to Power Generation, Transmission, and Distribution," Gijutsu Hyoronsha, pp. 32, 34, 42, 50, 60, 64, 66 [Non-patent document 3] "Learning Mechanisms from the Basics", Ohmsha, p.230 Summary of the Invention [Problem to be solved by the invention]

[0005] Thermal power plants generate electricity by burning fuels such as coal, which means they emit greenhouse gases that cause global warming, which causes problems for the planet. Nuclear power plants also have problems such as radioactive contamination from nuclear accidents, and hydroelectric power plants have problems such as villages being submerged in dam lakes.Other forms of power generation also have their own issues.In addition to these problems, there are other issues such as the high cost of fuel required for power generation and the current power shortage, so there is a need to create clean energy and there are calls for improvements in the supply and demand of electricity.

[0006] The invention arose from the problem of how to create a mechanism to generate clean energy electricity using the natural phenomenon of the ebb and flow of seawater tides in order to improve various problems in the supply and demand of electricity. [Means for solving the problem]

[0007] The means for solving the problem of the invention, as described in claims 1 and 2 of the application of this application, is thought to be as follows: As shown in Figure 1, when the tide level of the sea changes, gates 1a, 2a, 3a, and 4a are opened at the right time in reservoirs 1, 2, 3, and 4 for storing seawater at high tide, and seawater is poured in and stored like a dam, and the stored seawater is stored in empty reservoirs 1', 2', 3', and 4', and water gates 1c, 1d, water gates 2c, 2d, water gates 3c, 3d, and water gates 4c, 4d are opened at the right time between the reservoirs 1, 2, 3, and 4 and the empty reservoirs 1', 2', 3', and 4' to create an orderly water flow. The generated water flow turns turbines 1e, 2e, 3e, and 4e, which in turn generate electricity in the generators G1, G2, G3, and G4 connected to the turbines, which are then operated in parallel to provide the power output of the power plant.When the tide level returns to low tide, the seawater stored in reservoirs 1', 2', 3', and 4', which have been emptied after turning the turbines used for power generation, is quickly returned to the sea by opening sluice gates 1b, 2b, 3b, and 4b, allowing the reservoirs to begin generating electricity.Also, when the tide level returns to high tide, gates 1a, 2a, 3a, and 4a are quickly opened all at once to allow seawater to flow into reservoirs 1, 2, 3, and 4, allowing the power generation to begin. Initially, power generation at this power plant begins at high tide and continues until low tide, with seawater stored in Reservoir 1 and Reservoir 2 of Unit 1 and Unit 2 flowing into Empty Reservoir 1' and Empty Reservoir 2' through the sequential opening of Gates 1c and 1d, and Gates 2c and 2d, turning Waterwheels 1e and 2e. As the tide level at sea moves from high tide to low tide, and then rises from low tide to high tide, operation shifts to Unit 3 and Unit 4, turning Waterwheels 3e and 4e, and then the tide reaches high tide. Here, as the stored seawater flows out into the empty reservoir, the water level in the reservoir drops and the force of the water flow that turns the waterwheel weakens, so Units 1 and 2 operate from high tide to low tide, and Units 3 and 4 operate separately from low tide to high tide.At this time, after power generation begins, as shown in Figure 2, operation will shift from Unit 1 to Unit 2, Unit 3, and Unit 4, so the generators will shift operation in the order of G1, G2, G3, and G4, and when the tide goes from low tide to high tide, gates 1b, 2b, 3b, and 4b will all be opened to release water and the reservoir will be emptied, and the power plant will return to the state where it started generating power again.Also, when the sea level goes from low tide to high tide again, reservoirs 1, 2, 3, and 4 will be quickly filled with water and the power plant will return to the state where it started generating power, and power generation will be repeated from here again. Here, at high tide, the water storage reservoirs for each unit are filled with water, and at low tide, the seawater stored in the empty reservoirs is returned to the sea. However, from high tide, when power generation begins, operation shifts to unit 1 and unit 2 at low tide, and empty reservoirs 1' and 2' are filled with seawater that has finished turning turbines 1e and 2e. However, units 3 and 4 are not yet operating, and empty reservoirs 3' and 4' remain empty. Therefore, at the first low tide after power generation begins, the first water release operation to return seawater to the sea is carried out simultaneously for all empty reservoirs of all units, but at this time only reservoirs 1' and 2' are released, and empty reservoirs 3' and 4' of units 3 and 4 are released empty, and all of the floodgates 1b, 2b, 3b, and 4b are not opened. From the second low tide release after power generation begins at high tide, all units release water simultaneously. In this way, the ocean tide level changes from high tide to low tide and back to high tide, returning to the state before power generation began, and this power generation process is repeated. In this way, a power plant can be envisioned that generates power continuously 24 hours a day, year-round, in response to changes in the ocean tide level, and transmits power continuously throughout the year. Figure 2 illustrates this power generation system, showing the timing of the gate opening and closing controls to store and release water in each reservoir and create a water flow to turn the turbines, in response to changes in the ocean tide level. It also shows the timing of the gates opening sequentially to create a water flow between the reservoirs, controlling the operation sequence to store water at high tide and release water at low tide, and then transfer the stored seawater to the empty reservoir to turn the turbines. The figure also shows the timing of power generation for each turbine and generator in this power generation system. In this way, the above-mentioned problems are solved.

[0008] The means for solving the problem of the invention, as described in claims 3, 4, and 5 of the patent claims, are believed to be as follows: Focusing on natural ocean phenomena, tidal energy can be converted into power by dividing it into high tides and low tides, making it possible to generate electricity by utilizing the difference in tidal levels. As shown in Figure 3, seawater is introduced into a reservoir from the sea via a water conduit 14 in response to the up and down movement of the sea surface 13 caused by the tides. The changes in the reservoir's water level are synchronized with the changes in the sea level. If a large, heavy floating object is placed in the reservoir, the floating object will move up and down in synchronization with the changes in the sea level. If a mountain were placed on this float and moved up and down with the tides, it would be possible to lift and move the mountain as well. The larger the float, the greater the force that tries to float it, and the heavier it is. Therefore, when the seawater changes from high tide to low tide, it moves downward with a great downward force. The kinetic energy of the float's movement due to the tides, even if it moves slowly, is likely to be considerable. To generate electricity using this large kinetic energy of the up and down movement with the tides, the following method would be effective for turning a generator. To extract the kinetic energy of the up and down movement of this large float, as shown in Figures 3 and 4, a support 10 attached to the float and worm gears 5, 6, and 15, 16 attached to the support 10 mechanically rotate shafts 9, 9', which turn bevel gears 17, 18, 17', 18', and rotate shaft 19. As shown in Figure 5, the rotation of 19 is transmitted to 19' using a bevel gear, and then in a rotation speed converter 21 using a gear combination, the rotation speed is converted into the rotation of the shaft 21', which rotates at a high speed using the gear tooth ratio.The rotation speed passes through a clutch 22 and an output frequency detector 24 for the generator 25, and the speed governor 23, which adjusts the rotation speed of the generator, adjusts the change in rotation speed evenly, so that the output frequency of the generator is kept constant and electricity is generated, and the power is transmitted to a transformer facility.You might think that the larger the float, the greater the power it can generate, both in terms of the upward force due to its buoyancy and the downward force due to its weight. However, when actually building a power plant using these methods, a large mass, M, weighs Mg. When it moves up and down with the ocean tides, if the difference between high tide and low tide is H, the potential energy generated is MgH, and the larger the mass, M, the greater the potential energy generated. This large potential energy from the up and down movement is converted into rotational kinetic energy with a high rotational speed using mechanical power to turn a generator. To create a reservoir and float that can generate such an enormous motive force, the structure would have to be extremely large, so each would need to be divided into many smaller parts, as shown in Figure 5, and the motive force generated there would ultimately be added together and rotated on a single shaft, which would then be connected to a generator to turn it. The power to turn this shaft is generated by the ebb and flow of the ocean tides, from the reservoir and the float that floats there. If we consider that there are two low tides and two high tides in a 24-hour day, the up and down movement of the float is extremely slow, and as a result, the rotation of the rotating shaft is also extremely slow. To use this to turn a generator and generate electricity, a high rotation speed is required, so it seems that if the rotation speed of the slow shaft is mechanically converted to a high rotation speed that turns the generator by connecting gears with different numbers of teeth, it will be possible to generate electricity effectively. Therefore, in order to obtain the rotational power to turn the generator that rotates due to the combined rotation of the ocean tides, the following mechanism is thought to be necessary. This requires a mechanism to convert the up and down movement of a float caused by the rising and falling tides into one-way rotation of the shaft, as shown in Figures 3 and 4. As the float 11 rises between low tide and high tide, the mounting support 10 for the straight part of the worm gear attached to the float also rises, causing the worm gear 15 located on the left side of part A to rotate counterclockwise when viewed from the front, as shown at A and B in Figures 3, 4 and 5. The sawtooth gear inside the worm gear 15 also rotates counterclockwise, and the claw 7' of the ratchet mechanism housed inside 15 catches on the sawtooth gear 8', causing the shaft 9' to rotate counterclockwise as well.At this time, bevel gear 17' attached to shaft 9' and bevel gear 18' attached to shaft 19 rotate shaft 19 clockwise in the power transmission direction as float 11 rises. This rotation is transmitted to shaft 9 housed inside worm gear 16 by bevel gears 17 and 18, and worm gear 16 rotates in the opposite direction to worm gear 15. At this time, when the float is rising, the support 10 attached to the float also rises, and the rotating part of worm gear 16 attached to the front right side as you face it also rotates clockwise. Since worm gear 15 and worm gear 16 have the same structure, at this time, when the seawater is rising from low tide to high tide, the claws 7 of shaft 9 inside worm gear 16 disengage from the sawtooth gear 8 inside worm gear 16, causing it to spin freely. For the reasons explained above, this mechanism generates rotational power that rotates shaft 19 clockwise in the direction of power transmission. This is the rotational power generated by this mechanism when the tide level in the ocean changes from low tide to high tide. In contrast, when the tide level in the ocean changes from high tide to low tide, it is thought that the following occurs. The support 10 attached to the floating body descends when the tide level in the ocean changes from high tide to low tide, so shaft 9 inside worm gear 16 rotates freely when the tide changes from low tide to high tide, but when the tide level drops, support 10 descends, causing 16 to rotate counterclockwise, and claw 7 inside 16 catches on sawtooth gear 8 inside 16, causing shaft 9 to rotate counterclockwise, and the bevel gear 17 attached to shaft 9 and the bevel gear 18 attached to shaft 19 rotate counterclockwise. , shaft 19 rotates clockwise in the power transmission direction from 18 to 18', which then moves bevel gears 18' and 17', rotating shaft 9' counterclockwise as viewed from the front, but when pawl 7' inside worm gear 15 disengages from sawtooth gear 8' inside 15 and support 10 descends, as the tide level in the sea changes from high tide to low tide, worm gear 15 rotates clockwise as viewed from the front, causing shaft 9' to spin freely inside worm gear 15. As explained above, when the tide level in the sea changes to rise, power is generated inside worm gear 15 on the left side to rotate shaft 9' counterclockwise, and at this time shaft 9 spins freely inside worm gear 16 on the right side.Furthermore, as the tide level falls, worm gear 16 on the right generates power to rotate shaft 9 counterclockwise, while worm gear 15 on the left side rotates freely. By doing this, even when the tide level changes from low tide to high tide, or from high tide to low tide, shaft 19 can be rotated clockwise in the direction of power transmission, and as shown in Figure 5, shaft 19' begins to rotate by combining the power of shafts 19 attached to each float, and power generation continues regardless of how the tides change over the course of 24 hours. Even if the tide level changes throughout the year, such as with spring tides and neap tides, or if a typhoon or other disaster occurs, if the height of support 10 and the straight gear parts 5 and 6 of the worm gear are set high in advance, shafts 9, 9' can be rotated in one direction continuously, and shafts 19, 19' can also be rotated in the same direction continuously, meaning that power can be generated and transmitted regardless of how the sea level changes. As described above, no matter how the ocean tide level fluctuates throughout the year, as long as the length of the support 10 attached to the float and the straight gear portions 5 and 6 of the worm gear are longer than the fluctuations in the ocean water level, the rotation of shafts 9 and 9' rotates shaft 19, which is then transmitted to shaft 19'. The gear ratio of the rotational speed converter 21 generates a large rotational power that rotates the generator at an optimal high speed, generating electricity. The generator's rotation speed detected by the generator output frequency detector 24 is used to operate the governor 23 to stabilize and equalize the frequency of the generated electricity. To perform maintenance on the generator and substation, shaft 21' can be rotated at high speed, and then the rotation can be interrupted by clutch 22. The generator is then rotated, and the electricity passes through the substation and becomes the power plant's 24-hour transmission output. It seems that a means is needed to solve the problems that the present invention aims to solve. [Effects of the Invention]

[0009] This invention utilizes ocean tide levels to generate electricity. Unlike existing power generation methods, which have harmful effects such as pollution, this method provides clean energy and is part of a global warming countermeasure. It is a valuable invention for today's world, where clean energy is needed and power shortages are a pressing need. If realized, it will offer a promising and useful power source, fulfilling modern needs and providing great help to people around the world. Unlike thermal power plants, which generate electricity by consuming expensive fuels like coal or natural gas, this invention utilizes natural phenomena in nature, providing low-cost electricity without fuel costs. Furthermore, this invention is merely an idea I came up with. Even if it does not prove to be beneficial to society, I hope that this invention will inspire others to come up with new ideas and contribute to the further development of society. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is an overall view of an explanatory diagram illustrating repeated power generation by storing and discharging water according to the present invention. [Figure 2] 2 is a timing chart showing the temporal operation of each part of FIG. 1 for generating power. [Figure 3] FIG. 1 is a schematic explanatory side view of a device of the present invention that introduces seawater into a reservoir, floats a floating body on the reservoir, and generates rotational power using the ebb and flow of the tides. [Figure 4] FIG. 3 is a schematic explanatory diagram showing the mechanism for generating rotational power from the front and elevation, and explains the relationship between the various parts that rotate the shaft in one direction. [Figure 5] This is an explanatory diagram of an example where several reservoirs for floating floating bodies are combined together. The power used to move each large floating body up and down is added together to create a large rotational power that turns a generator, generating electricity, which is then transformed and transmitted. DETAILED DESCRIPTION OF THE INVENTION

[0011] It seems necessary to determine the bottom height of each reservoir in advance, in order to store seawater efficiently, turn the water wheels 1e, 2e, 3e, 4e, and flow it into the empty reservoirs, and create a water flow that returns it to the sea, as well as the bottom height of reservoirs 1, 2, 3, 4, which will store water, 1', 2', 3', 4', and the seabed at low tide.

[0012] The sluice gates 1a, 2a, 3a, 4a, 1b, 2b, 3b, 4b, 1c, 2c, 3c, 4c, and 1d, 2d, 3d, 4d at reservoirs 1, 2, 3, 4, 1', 2', 3', 4' require a great deal of force to open and close if the water pressure is too great, so it is likely that appropriate measures and ingenuity will be required for the sluice gates.

[0013] In order to keep the water flow that turns the waterwheel constant and ensure that the waterwheel always turns with a constant force, it is necessary to open and close the opening of the sluice gate in the waterway that turns the waterwheel and control the force of the water flow.

[0014] When the tide reaches high, water pressure is applied from the sea side to the empty reservoir, and it seems necessary to install gaskets or other measures to prevent seawater from leaking into the sluice gates of the empty reservoir.

[0015] In order to quickly store and release water from reservoirs that are full of water and empty reservoirs, it seems necessary to devise measures such as enlarging the openings of the floodgates or creating multiple openings.

[0016] In Figure 1, the generators G1 to G4 of each unit are operated in parallel, but it seems possible to turn one generator by mechanically transmitting the rotation of the shaft of each turbine in each unit to one shaft, so this will likely depend on the designer of the power plant, and flexible design capabilities will be required.

[0017] This power generation method requires a large reservoir for the amount of electricity it can generate, and the size of the power plant facilities is too large for the amount of electricity it can generate, which makes the cost per unit of electricity generated too high, and the cost of building the power plant too high. However, the Ariake Sea, which has a large difference in tide between low and high tide on the Japanese coast, is a suitable location for this type of power generation, and if a large reservoir can be built there, a considerable amount of seawater will likely flow in and out, and the amount of electricity generated there will be quite large. For these reasons, if the conditions for building this power plant are met, it seems possible to generate electricity on a large scale. Furthermore, since this power generation method is an unknown field, it is necessary to take into consideration the various conditions for building a power plant.

[0018] Since the power plant of the present invention is built along the coast, it will be necessary to enclose the power plant with a tsunami-proof embankment in order to respond to disasters such as tsunamis. Also, when a typhoon or other disaster occurs and a high tide occurs, it will be necessary to devise a method for storing and discharging water. Also, when there are changes in the annual tide level such as spring tides and neap tides, it will be necessary to devise appropriate measures.

[0019] If a power plant using a floating structure in a reservoir were built on a shallow coast, the water conduit 14 that leads seawater into the reservoir 12 would be long, increasing construction costs. Furthermore, when the sea dries up at low tide, the floating structure 11 in the reservoir would sink completely and become immobile, making it impossible to generate electricity. For these reasons, it seems that floating structure power generation must be built on a ria coast. Since the tide level of seawater is not stable throughout the year, there is no problem as long as the coast on a ria coast is sufficiently higher than sea level. Furthermore, the depth of the reservoir bottom must be shallower than the depth of the sea along a ria coast. Furthermore, during typhoons and high tides, seawater can overflow the coastline leading to the reservoir on shallow coasts, causing the reservoir to overflow with seawater, preventing the floating structure from rising any further. For these reasons, it seems best to build floating structure power generation inside the coastline of a ria coast.

[0020] The size of the reservoir, float and related equipment of the power generation facility proposed by this invention, which stores and releases water in a reservoir, and the floating power plant facility proposed by this invention, are rough ideas and ideas, and no specific physical analysis has been conducted. When actually constructed, it is believed that the specific size must be calculated in the design, and the generated power and frequency must also be calculated.

[0021] As shown in Figure 5, it is necessary to install valves 20 on the water pipes attached to all reservoirs, so that in the event of a problem with the function of each reservoir or each floating structure, this valve can be closed to stop the connection between the sea and the power plant, allowing overflow and maintenance to be carried out.

[0022] In order to perform maintenance on the speed governor 23, generator 25, generator output frequency detector 24, and substation equipment 26, it seems necessary to devise a way to shut off the rotation of the high-speed rotating shaft 21' using the clutch 22 attached to the rear of the shaft 21', which is rotated at high speed, using the rotation speed converter 21, which is made up of multiple gears connected together.

[0023] The present invention requires that power plant facilities be earthquake-resistant in anticipation of earthquakes, and that designs be made to take into account the possibility of fires. Furthermore, since the plant will be built adjacent to the coast, measures must be taken to prevent tsunamis, and in the case of floating power generation, stoppers must be attached to the reservoir to prevent the float from jumping out of the reservoir in the event of a tsunami. It is also likely that measures will need to be taken to deal with all conceivable disasters in addition to tsunamis.

[0024] Since this invention is a new power generation system and belongs to an unknown field, various safety measures must be taken into consideration.

[0025] This idea is merely a spontaneous thought, and technical considerations may be required to successfully implement it. At this stage, it is not possible to analyze it, so it is likely that some ingenuity will be required to realize it and put it into practical use. [Explanation of symbols]

[0027] 1 Unit 1 Water Storage Reservoir 2. Unit 2 Water Storage Reservoir 3. Unit 3 Water Storage Reservoir 4. Unit 4 Water Storage Reservoir 1' Unit 1 empty reservoir 2' Unit 2 empty reservoir 3′ Unit 3 empty reservoir 4' Unit 4 empty reservoir 1a Unit 1 storage gate or its operation timing 2a Unit 2 storage gate or its operation timing 3a Unit 3 storage gate or its operation timing 4a Unit 4 storage gate or its operation timing 1b Unit 1 discharge gate or its operation timing 2b Unit 2 discharge gate or its operation timing 3b Unit 3 discharge gate or its operation timing 4b Unit 4 discharge gate or its operation timing 1c Unit 1 reservoir side, turbine-driven water flow opening and closing gate, or its operation timing 2c Unit 2 reservoir side, turbine-driven water flow opening and closing gate, or its operation timing 3c Unit 3 reservoir side, turbine-driven water flow opening and closing gate, or its operation timing 4c Unit 4 reservoir side, water turbine driven water flow opening and closing gate, or its operation timing 1d Unit 1 empty reservoir side, turbine-driven water flow opening and closing gate, or its operation timing 2d Unit 2 empty reservoir side, water turbine driven water flow opening and closing gate, or its operation timing 3d Unit 3 empty reservoir side, water turbine driven water flow opening and closing gate, or its operation timing 4d Unit 4 empty reservoir side, water turbine driven water flow opening and closing gate, or its operation timing 1e Unit 1 water turbine or its operation timing 2e Unit 2 water turbine or its operation timing 3e Unit 3 water turbine or its operation timing 4e Unit 4 water turbine or its operation timing G1 Unit 1 generator or its generator output operation timing G2 Unit 2 generator or its generator output operation timing G3 Unit 3 generator or its generator output operation timing G4 Unit 4 generator or its generator output operation timing G. Combined power generation output operation timing of generators G1 to G4 operating in parallel a Rough daily change in seawater tide level A is a front view of an explanatory diagram of the conversion part that converts the up and down motion of the floating body caused by changes in tide level into rotational motion. B is an elevation view of an explanatory diagram of the conversion part that converts the up and down movement of the floating body caused by tidal changes into rotational movement. 5 Right-side straight gear part of the worm gear mounting support of the floating body 6 Left straight gear part of the worm gear mounting support of the floating body 7 Right ratchet mechanism inner rotating part 7' Left ratchet mechanism inner rotating part 8 Right side ratchet mechanism internal sawtooth gear 8' Left ratchet mechanism internal sawtooth gear 9 Rotating shaft in the right ratchet mechanism 9' Left ratchet mechanism internal rotation axis 10 Supports attached to the floating body 11 Floating body that moves up and down due to the change in the tides 12 Floating reservoir 12′ coast 13 Sea level position 14 Water pipe 15 Left worm gear rotating gear part 16 Right worm gear rotating gear part 17 Right-hand rotating shaft bevel gear 17' left side bevel gear 18 Right-hand rotating shaft rotating power transmission side bevel gear 18' left rotating shaft rotating power transmission side bevel gear 19 Rotating shaft that combines the rotational power of each floating body 19' Rotating shaft that combines the rotational power of each floating body 20 Maintenance shut-off valve 21 Rotation speed conversion device using multiple gears connected together 22 Clutch 23 Governor 24 Generator output voltage frequency detector 25 Generator 26 Power plant substation equipment 27 Power plant transmission output

Claims

1. This is a method of generating electricity by storing seawater at high tide and letting it flow into an empty reservoir, creating a water current that turns a water wheel and generates power. The seawater stored in the empty reservoir used for power generation is returned to the sea at low tide, and stored again at high tide. This method repeatedly stores and releases water according to the changes in the tides of the sea, turning the generator 24 hours a day, all year round. In order to generate power smoothly, there are reservoirs 1, 2, 3, 4 and empty reservoirs 1', 2', 3', 4'. If there is no difference in height at low tide in the sea, the water flowing there will not flow smoothly, so by creating a difference in height at the bottom of the reservoir, seawater is simultaneously poured into reservoirs 1, 2, 3, and 4 at once when the sea is at high tide, and the stored seawater is poured into empty reservoirs 1', 2', 3', and 4' in order, and the water flows to turn water wheels 1e, 2e, 3e, and 4e in order, which then turn generators G1, G2, G3, and G4 in order, and the seawater stored in the empty reservoirs is returned to the sea, thereby generating electricity.

2. When the stored seawater is poured into the empty reservoir, the water level of the reservoir drops and the force that turns the waterwheel weakens. Therefore, four reservoirs are set up and divided into Unit 1, Unit 2, Unit 3, and Unit 4. Of these, Unit 1 and Unit 2 operate in turn when the sea changes from high tide to low tide, and Unit 3 and Unit 4 operate in turn when the sea changes from low tide to high tide. The sluice gates are controlled to open and close and operate in order, so that the reservoirs of all units are filled with water at high tide and the empty reservoirs of all units are filled at low tide. This is a power generation method that uses the difference in the tides of the ocean to generate electricity 24 hours a day, 1 year a year, by storing and releasing water, and then building a power station along the coast, which can generate and transmit electricity 24 hours a day, 1 year a year. In this way, the energy of the ocean that exists due to the changes in the tides of the ocean, such as the interaction of the gravity of the earth and the gravitational forces of the moon and the sun, is converted into electricity by a gravitational energy converter, and the difference in the tides of the ocean is converted into electricity 24 hours a day, 1 year a year.

3. Another method of generating electricity by the present application is to use the difference in tidal levels caused by the ebb and flow of ocean water. Seawater, whose tidal level fluctuates up and down due to the ebb and flow of seawater, is introduced into reservoir 12 via water conduit 14, float 11 is floated in reservoir 12, and the up and down movement of the sea surface is changed to an up and down movement of float 11. This up and down movement is converted into rotational motion by worm gears 5, 6 and 15, 16, and shafts 9, 9' are rotated in one direction by ratchet mechanisms installed inside 15, 16. Shaft 19 is rotated in one direction due to the change in tidal level, and this rotation turns a generator to generate electricity.

4. The force generated by this invention is weak if it is the force of one float in one reservoir, so multiple reservoirs and floats are set up, and the up and down movements of the floats in the multiple reservoirs are converted into rotational movements that rotate the shafts using the worm gears attached to each float, and the worm gears attached to each float convert this into rotation that turns the shafts in the same direction using the ratchet mechanisms inside the worm gears attached to each float, and then the rotational power generated by each float floating in each reservoir is transmitted to the connecting shaft 19 so that the power generated by each float floating in each reservoir is added together, and several of these shafts are connected and combined to form shaft 19', which becomes a slow, large rotational power that turns in one direction, and then passes through a rotation conversion device 21 made up of a connection of multiple gears to convert it into high-speed rotation that turns a generator, generating electricity.

5. The mechanism of this invention works in such a way that the shaft rotates the generator in one direction whether the ocean tide level changes from low tide to high tide or from high tide to low tide, and whether the ocean tide level changes throughout the year with spring tide or neap tide, or whether a typhoon causes a high tide. The length of the support pole 10 attached to the float and the straight gear parts 5 and 6 of the worm gear attached to the support pole 10 are made long in advance to generate rotational power so that it can respond to changes in the tide level, and the rotational power generated from the up and down movement of each float makes it possible to turn the generator and generate electricity all year round.

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