JP2007138883A - Power generator using bubble - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide this power generator since there is no practicable device capable of stably and continuously injecting bubbles though there is a power generator using buoyancy of the bubbles as a power generation method without using fossil fuel. <P>SOLUTION: The bubbles are taken in by substituting water with air by a water turbine of the water tank bottom. This power generator is formed as a device having the functions such as compressing the air by the water turbine and moving a bubble containing packet maximally long for increasing efficiency, and is also formed as a device for increasing efficiency by using various natural phenomena of the air bubbles and liquid. A permanent engine is not daringly aimed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a power generation device that rotates a power generation shaft by buoyancy of bubbles.

  In various power plants, electric energy is finally generated from various energy resources by using respective energy conversion methods. For example, a power generation device (mainly thermal power and nuclear power) that can generate large electric power uses heat energy obtained by chemically changing fossil fuels to convert water into steam, and then rotates the turbine with the expansion pressure of the steam to mechanical energy. It is converted into electrical energy by transmitting its rotational force to the generator. Various problems on a global scale have been pointed out by carbon dioxide and heat generated in this power generation cycle. In addition, hydropower, wave power, wind power, geothermal, and solar power generators do not use fossil fuels, but problems have been pointed out that power generation efficiency is low and the amount of power generation is greatly influenced by environmental conditions.

  In order to cope with such a problem, a device that generates bubbles by using the bubbles and the buoyancy of the bubbles is very effective. Bubbles can be created from substances such as water and air that exist in nature as they are without applying heat energy like water vapor.

  In addition, when a turbine or the like is moved by a conventional power generation method, energy is lost by gradually changing kinetic energy to heat energy or the like due to friction unless force is continuously applied. However, in the case of bubble buoyancy, as long as there is air in the packet receiving the bubble, even if the movement is stopped, there is no reduction in energy because a force in a certain direction always works. This is also an advantage of using bubbles.

For this reason, various power generation methods that use bubble buoyancy have been devised.
JP 2002-21701 JP 2004-183637 A

  However, in these conventional techniques, a method of continuously sending bubbles without being influenced by environmental conditions is insufficient. In addition, many problems have been pointed out in terms of practical use, such as the fact that the apparatus is costly even if bubbles continue to be sent.

  The problems to be solved by the present invention are as follows. Do not use fossil fuels, or use substances that exist in nature without any energy (in this case, “water” and “air”). Reduce the use of fuel (storage water) used for power generation as much as possible. D. Enables stable power supply regardless of environmental conditions. The cost for the same amount of power generation is suppressed as much as possible assuming the case of practical use. The present invention aims to solve all these problems.

  The main feature of the present invention is that it includes a water wheel for replacing water and air provided in the deep part of the water tank.

  Normally, when there is a water wheel at the bottom of the water tank, the water wheel rotates vigorously and water flows out, but this rotational force is used to compress air and inject the compressed air into the water tank for power generation. It is the present invention to use. As a result, it is possible to increase the power generation efficiency by suppressing the outflow amount of water as power and at the same time increasing the bubbles that are the source of power generation.

  When the water tank becomes deeper, the water pressure increases and the bubbles become smaller and the buoyancy decreases. For this reason, it is the present invention that the drainage port for suppressing the decrease in buoyancy is provided by increasing the water level by flowing more water than necessary into the water tank, thereby improving the power generation efficiency. By draining, it is not necessary to place a burden on each part of the device even when the water level suddenly rises due to a typhoon, etc. A stable state can be maintained.

  The amount of power generated by the generator is proportional to the amount of work performed on the power generation shaft. The work size W performed by the object is represented by the product of the magnitude of the force F and the magnitude (distance) S of displacement in that direction. Therefore, it is possible to generate power more when the volume of the injected bubbles is larger and the moving distance is longer. The present invention is that the displacement in the direction of buoyancy is increased by circulating a packet containing bubbles like a gondola.

  Even with the same volume of bubbles, if the area on the water surface side is smaller than the area on the water bottom side, greater buoyancy can be obtained. Further, the resistance received from water is smaller when the area of the moving body in the traveling direction is smaller. It is the present invention that the power generation efficiency is increased using a packet that satisfies this natural law.

  When bubbles existing in the water come out on the water surface, the pressure that the bubbles received is changed from water pressure to atmospheric pressure, so that the volume changes greatly and an expansion force is generated. It is the present invention that the power generation efficiency is increased by utilizing the expansion force of the bubbles.

  If the packet into which the bubbles are put is box-shaped, it will receive buoyancy when the packet descends from the water surface. In order to prevent this buoyancy, a lid made of a material that is lighter than the specific gravity of water is provided on the inner ceiling of the packet, and the lid automatically opens near the water surface to prevent unnecessary buoyancy from occurring. Thus, the present invention improves the power generation efficiency.

  The present invention provides the following effects.

  Since the present invention uses the general principle of bubble buoyancy, the mechanism of power generation is very easy to understand, and since the structure is simple, power generation can be performed at a relatively low cost.

  Since it does not involve the consumption of fossil fuel during power generation, there is little impact on the environment.

  Since the structure is simple and it can be installed anywhere within a water area with a depth of several meters, there are almost no restrictions on the installation location as in conventional power plants.

  Any number of expansions are possible depending on the amount of power required. In addition, the installation location is a dam, a sand dyke, a rain gutter, etc. that has been constructed, and since the area that occupies the water surface is small, it is easy to secure the installation location.

  For equipment related to this power generation, a method of creating a power generation unit at the factory is suitable. For this reason, there is an advantage that the construction time can be shortened without requiring a large-scale construction site as in the prior art.

  Compared to the fact that the present invention is operated with the potential energy of water, which is a very light material such as air, the conventional hydroelectric power generation causes cavitation under high water pressure because the turbine is directly rotated by the potential energy (weight) of water. There was a problem that occurred. In this device, when the water depth is increased and the water pressure is increased, the bubbles become smaller and the buoyancy is reduced, so there is no reason to increase the water depth. Therefore, the problem of cavitation inevitably does not occur.

  In addition, since it is not necessary to have a deep water depth, it is possible to give the water tank sufficient strength to withstand water pressure even if the partition wall of the water tank is thin.

  FIG. 1 is a conceptual diagram illustrating the principle of the present invention. The water wheel 16 at the bottom of the water tank 6 in the figure is rotated by the water (or liquid) in the water tank, and the rotation causes the air 14 in the air tank 11 to be taken into one of the water / air replacement chambers 15 of the water wheel to rotate the water wheel. Compressed air 13 is generated by force, and the compressed air rotates and reaches the water / air exchange port 19. At the same time, replacement occurs due to the difference in specific gravity between water and air, and water is discharged by the water wheel to become the drainage 21. The water tank 6 is charged.

  The bubbles 10 accumulate in one of the packets 5 provided in the water tank 6 and rise while pulling the belt 7 by this buoyancy. As a result, the upper gear 4 rotates, the rotational force of the power generation shaft 3 connected to the upper gear is transmitted to the generator, and electricity is generated.

  When the pressure of the compressed air in the composite air inlet 20 is higher than the water pressure and the bubbles 10 are injected, the water turbine 16 can be stopped from rotating to reduce the power.

  FIG. 2 is a conceptual diagram illustrating a partial cross section near the water surface of the aquarium 6 in the present invention. The drain port 18 at the upper end of the water tank 6 is provided at almost the same height as the central axis of the upper gear 4 so that the expansion force generated when the force received by the bubbles 10 is changed from water pressure to atmospheric pressure is effectively transmitted to the upper gear 4. I have to. Further, when the amount of water taken in from the water intake 2 is larger than that required for power generation, the water is discharged from the drain 18 as excess water 17.

The packet 5 is provided with a packet lid 22 made of a material lighter than the specific gravity of water on the inner ceiling. When the packet 5 ascends in the aquarium 6, it does not leak the bubbles 10, but automatically near the water surface when descending. Since the lid is opened and water flows in, unnecessary buoyancy that hinders the circulation direction of the packet 5 is suppressed. In addition, the upper surface area of the packet 5 when the buoyancy is applied is made smaller than that of the lower surface, and the buoyancy generated by the water pressure difference between the upper and lower surfaces of the packet is more positive at the same time as suppressing the water resistance applied to the packet 5. To occur automatically.

  FIG. 3 is a conceptual diagram illustrating a portion around the water wheel at the bottom of the water tank 6 in the present invention. The water turbine 16 continues normal rotation as shown in FIG. The air 14 taken into the water / air replacement chamber 15 is gradually compressed as the pin 25 of the piston 24 moves along the groove 26 provided in the grooved partition wall 12. Adjustment of the air compression rate, that is, the amount of the drainage 21 (the rotational speed of the water turbine 16) can be made by changing the shape of the groove 26.

  FIG. 4 shows an example when power generation is performed according to the present invention. 1 is connected vertically as a unit, and the upper unit drainage 21 and excess water 17 are taken in as the lower unit intake (instead of the intake port 2 in FIG. 1). In addition, the generator shafts 3 can be unit-connected in accordance with the specifications of the generator.

  The connected unit (example: Fig. 4) can be used together with main power generation mainly on the wall of a dam, and can be generated as a rain gutter for general households. Can be used. When used in ordinary households, there is a possibility that the water stored on the roof can be used by reusing rainwater and household wastewater.

It is explanatory drawing which shows the principle of the electric power generation by this invention. It is explanatory drawing which shows the partial cross section of the water surface vicinity of the water tank 6 among this invention. It is explanatory drawing which shows the water wheel periphery in the bottom of the water tank 6 among this invention. It is explanatory drawing which shows one Example of the electric power generation by this invention.

Explanation of symbols

3 Power generation shaft 6 Water tank (liquid)
DESCRIPTION OF SYMBOLS 10 Bubble 12 Grooved partition wall 13 Compressed air 15 Water / air replacement chamber 16 Water wheel 17 Excess water 20 Compound air inlet 21 Drainage

Claims (10)

  A power generation device that uses water's potential energy in the water tank to rotate water turbines to replace water and air, and uses the buoyancy of the replaced air, that is, bubbles.   In the apparatus of claim 1, by compressing the air in the water turbine with the potential energy of the water, the bubbles obtained by the replacement are enlarged to increase the buoyancy, and at the same time, the flow rate of the water flowing out from the water turbine is suppressed. A power generator that reduces waste of potential energy.   When the water tank becomes deeper, the water pressure increases and the bubbles become smaller and the buoyancy decreases. Therefore, the power generator according to claim 1, further comprising a water tank provided with a wall at a water depth sufficient to obtain buoyancy so that the water tank does not have a depth at which buoyancy is reduced.   In order to increase the distance traveled by the injected bubbles in the apparatus of claim 1, the packet containing the bubbles is circulated like a gondola, and a generator is connected to the rotating shaft (hereinafter referred to as a power generating shaft) at the end of the circuit. Linked power generator.   5. The power generation device according to claim 4, wherein the rotation speed of the power generation shaft is increased compared to a packet having the same volume by using a packet having an area on the water surface smaller than an area on the water bottom.   5. The power generator according to claim 4, wherein a power generation shaft at the end of the circuit is placed at the boundary between water and the atmosphere, so that an expansion force whose volume changes greatly when the pressure received by the bubbles changes from water pressure to atmospheric pressure. .   5. The power generation apparatus according to claim 4, wherein the packet is formed so that the buoyancy at the time of lowering is smaller than that at the time of rising by opening a hole in the packet only at the time of falling.   A power generation apparatus using a composite of each of claims 1 to 7 and a liquid other than water.   A power generator using a gas other than air and a composite of each of claims 1 to 7. 10. A power generation device using the buoyancy of bubbles in a water tank, wherein the water turbine is used as an auxiliary device (for example, wind, electrolysis, air pump) as an auxiliary in the apparatus of claim 1-9.

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