JP2012241702A - Underwater power generating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underwater power generating method which has a water flow through structure having a water flow acceleration function in a water flow applied rotation power function and improves rotation efficiency by including a helical rotor in a center through-hole under an accelerated water flow condition.SOLUTION: In a water power generating device, a power generating function part (H) on the water surface and a rotation power part (T) under water are integrally connected, and a water power rotation part is under a water flowing condition. The water flow through rotation power part (T) has a dual structure of a substantially cylindrical penetrated shape comprising inside and outside induction pipes (A, B), the diameters of which are different. In the water power generating method, the synergistic effect of a diffuser effect wherein a pressure difference relaxation flow which occurs downstream downward and flows to a pressure reducing area accelerating passes through the center through-hole (E) is applied, rotation efficiency and torque are enhanced through the water flow acceleration function by providing the helical rotor (F) in the center through-hole (E), the device itself rotates freely by floating of a mooring hook and function of a straightening plate (Z) even if it is moored and fixed, and directivity that a water intake faces the supratidal zone and a water flow acceleration function are always achieved.

Description

  The present invention relates to an underwater power generation method in which a diffuser action consisting of a reduction in back pressure due to a resistance shape behind a water flow through hole is generated, and a rotary blade is provided in a central through hole where the water flow is under the condition of accelerated passage to provide rotational power.

  As an incidental element to ensure a certain power generation effect by hydroelectric power generation, it is indispensable to secure water pressure equivalent to the power generation load by screw rotation power, so in large-scale power generation facilities using rivers, the falling hydraulic pressure energy due to massive water discharge from dam lakes is used. In addition, large-scale facilities are indispensable for the utilization of tidal currents in the ocean because it is necessary to secure an absolute amount of water flow pressing energy.

  In addition, there is a water turbine power generation method that applies the weight of water during natural waterfall as a simple small hydro power generation device for river use, but it is necessary to secure a site such as a water intake and an extended water channel to obtain a height difference, a water turbine device, etc. The power generation efficiency for the maintenance management of this fixed facility is low, and it is difficult to become a practical target as a general simple power generation system.

As described above, power generation using hydropower can set power generation capacity by securing stable water pressure energy depending on the target river and tidal current conditions, but it is difficult to speed up screw rotation due to the viscous resistance of water. It can be said that the conditions for using a hydroelectric power generation system in which the water turbine rotating structure itself is simplified and miniaturized are limited, assuming large facilities for securing water pressure to obtain a certain level of rotational power.
On the other hand, wind turbine generators that use wind energy can achieve high-speed rotation even if they are relatively light and small, and there are a variety of practical machines as simple power generation methods, but their power generation capacity depends on natural conditions. In addition, anxiety in securing electricity is pointed out.

  Therefore, in the rotational power function for water flow applications, a water flow penetrating structure with the function of water flow acceleration is provided, and the rotation efficiency is improved by providing a spiral rotary blade in the central through hole that is under the condition of water flow acceleration. Provide a method of power generation.

  The power generation function unit H located on the surface of the water and the rotary power unit T located in the water are integrally connected, and the rotary power unit under water conditions is a power generation device in which the flowing water intake is always opposed upstream, and the rotary power unit T Has a double structure with internal and external water flow guide rods having a generally cylindrical piercing shape, and the downstream ends of both the internal and external guide rods (A, B) are expanded outwardly along the outer edge of the guide rod There is no resistor for each of the passing water flows, and the differential pressure relaxation flow to the rear low pressure region caused by the resistor of the external guide rod A accelerates through the outer space C formed by the difference in the diameter of the inner and outer guide rods (A, B). When the accelerating water flow exits, the resistor of the internal induction rod B creates a further low pressure region behind the resistor, and the new differential pressure relaxation flow accelerates through the central through hole E and applies the synergistic effect of the diffuser action However, the water flow acceleration condition A method of underwater power generation with a rotary wing F consisting of a spiral in the central through hole E. See Figures 1 and 2.

  The rotating outer ring portion of the spiral rotor blade F provided in the central through hole E described above is used as a bearing support N to the inner wall of the central through hole E, and the center portion of the continuous spiral rotor blade that does not require the rotation center axis is a spatial structure. In addition, a part of the outer ring becomes a gear structure P, and the rotational power required for power generation is transmitted to the gear connecting portion provided in the outer layer space C, and further, the power generating function portion H is connected via the connecting shaft J in the support arm G. In addition to the water flow acceleration function by the synergistic effect of the diffuser described above, the center of rotation has a predetermined hollow structure by the spiral rotating blade F that does not require the central axis, thereby allowing the through water flow to flow. The rotational power unit T is capable of securing a high torque even during low-speed rotation under slow flow conditions without hindering. See Figure 2

  In the case where the above-described underwater power generation apparatus is installed in the sea, the power generation function part H has a sealed float function, and the upper part of the power generation function part H is set to the sea surface S position by adjusting the buoyancy, and most of the power generation apparatus is wind-driven. The underwater position of the rotating power unit T is maintained at a predetermined depth that can reduce the influence of drifting objects, and the underwater upright posture is maintained at a predetermined position in the horizontal direction. With the horizontal braking plate Y, the vertical movement due to the wave of the device is controlled, and a ring related to the mooring connection is provided at a predetermined position above and below the device in response to the tidal current that changes during tidal periods, and it can freely circulate on the ring The mooring rope M is connected to the mooring rope M by the mooring rope M, and the device under the fixed condition has a function of free rotation by the mooring rope M. Trends inlet of the rotational power unit T Te is always an installation specifications having directivity toward onto tide. See Figure 1

  In addition, as a basic shape of the underwater power generation device according to the present invention, the left and right rotational power units have a two-body structure in which the respective rotational power units T are connected to the distal ends of the left and right support arms G that are inclined obliquely into the water from the power generation function unit H. Rotational energy at T becomes a gear transmission to the upper power generation function unit H via the shafts in both support arms G, and when the generated power is transmitted to the onshore power storage facility, power transmission drooped from the power generation function unit It becomes the submarine wiring by the power transmission cable R extended from the rotary connection version provided at the end of the protective pipe K. See Figure 1

In the field installation situation when the present invention is used in a river as a small-scale simple power generation device, the rotary power unit is fixed underwater to a waterway with a certain depth and flow, mooring etc. according to the location conditions, etc. For example, it is possible to propose a method of distributing and installing small-scale running water power generation facilities by geographical features, such as enabling simple power generation by securing water channels for mountain stream use in mountainous areas.
In addition to the emergency response that can be secured only at the mooring rope M even when installed in the sea, when the power generation function of the present invention is used as a power source for the sea buoy, the entire power generator is installed in the buoy. Safety effectiveness can be ensured without hindering the visual purpose of floating specimens.
It is expected to be effectively used as an emergency power generation device because it can be relocated under any of the above installation conditions and has mobility.

  In addition, when the fluid acceleration function and the spiral rotor structure in the rotating unit of the present invention are applied to a small-scale wind turbine generator for wind power application, the device scales as a 6 m ground wind tunnel diameter of about 2 m as the device scale. By having a flexible function and setting the location conditions fixed on relatively high hills and ridges, it is possible to convert the power to power generation by obtaining a considerable value of high rotation torque even at low speeds. As examples of utilization by the side, it is effective as an auxiliary power source in a depopulated area and as an unmanned charging station for EV cars on a highland sightseeing road.

  In the constituent material and each part design of the underwater power generation device of the present invention, the shape considering the water resistance and water flow resistance of each component member is an indispensable condition, and the resistor and center of the inner and outer induction rod (A, B) In all but the spiral rotor blades in the through hole E, priority is given to the shape function that reduces fluid resistance and takes into account smooth flow conditions. Also, when this device is installed in the sea, in addition to rigidity, ensure buoyancy. In order to maintain the operation of buoyancy and various functions, in addition to the required weight reduction and salt damage countermeasures, it will be selected at the upper end of the power generation function part H while keeping the specified required parts waterproof. The maintenance function includes a ventilation hole and a bilge discharge hole W. See Figure 1

Underwater power plant installation image Water flow acceleration function conceptual diagram

A External guide rod B Internal guide rod C Outer layer space E Central through hole F Rotor blade G Strut arm H Power generation function section K Power transmission protection pipe S Sea surface Y Horizontal braking plate T Rotation power section M Mooring rope R Power transmission cable N Bearing support P Gear Structure J Connection shaft Z Current plate

In view of this, an underwater power generation apparatus including a spiral rotary blade in a central through hole having a cylindrical structure under water flow acceleration conditions is provided.

The power generation function unit H at the water surface and the rotational power unit T at the underwater position are integrally connected, and the rotational power unit under the underwater condition is a power generation device having a direction in which the flowing water intake port is always opposed upstream. The part T has a double structure with a generally cylindrical inner and outer water flow guide pipe having a different caliber, and the downstream ends of both the inner and outer guide pipes (A, B) are expanded to the outside, None, an underwater power generation apparatus having a spiral rotor blade F in the central through hole E under the water flow acceleration condition by the synergistic effect of the diffuser action by the internal and external leeward resistors . See Figures 1 and 2.

The above-described contour portion of the spiral rotor blade F is used as a bearing support N to the inner wall of the central through hole E, the central portion of the spiral rotor blade that does not require a central axis is formed as a through space, and a part of the contour of the rotor blade is a gear structure P. In contact with the connecting shaft J gear part in the strut arm G provided in the outer layer space C , it serves as a rotation transmission function to the power generation function part H, and the speed increasing function of the water flow through the central through hole by the diffuser action described above in addition, by constituting a rotational center portion of the spiral rotary blades with predetermined through space, and excessive over - affected hardly rotational power unit T also flow bias reduction in the pressure conditions. See Figure 2

A External guide pipe B Internal guide pipe C Outer layer space E Central through hole F Rotor blade G Strut arm H Power generation function part K Power transmission protection pipe S Sea surface Y Horizontal braking plate T Rotation power part M Mooring rope R Power transmission cable N Bearing support P Gear Structure J Connection shaft Z Current plate

Claims (3)

  A submersible power generation unit in which a power generation function unit (H) located on the water surface and a rotary power unit (T) located in water are integrally connected, and a rotary power unit under submerged conditions in which a flowing water intake is always opposed upstream. (T) In the structure, the inner and outer double structure of the flowing water guide rod having a generally cylindrical shape with different diameters is formed, and the downstream ends of both the inner and outer guide rods (AB) are expanded outward along the outer edge of the guide rod. A central shape that passes through the center of the flow rate of the passing water due to the synergistic effect of the diffuser action in which the differential pressure relaxation flow to the back pressure reduction region that occurs behind the resistor is accelerated through the induction rod. A method of underwater power generation having a water flow acceleration function, characterized in that a rotary blade (F) is provided in a hole (E) to provide rotational power.   The rotating structure of the rotating power unit (T) according to claim 1 is a continuous spiral rotating blade (F), and the outer ring portion of the rotating blade is supported by a bearing (N) on the inner wall of the central through hole (E). The method of underwater power generation having a water flow acceleration function according to claim 1, wherein a rotation structure in which a rotation center axis is not required and a space is generated in the rotation center portion is adopted.   In the case where the underwater power generation device according to claim 1 is installed in the sea, the power generation function part (H) has a float function and is on the sea surface and has a self-supporting function in which the rotary power part (T) is in the underwater position. When the mooring is fixed, the mooring floating hook has a revolving function when the mooring is fixed. The method of underwater power generation having the water flow speed-increasing function according to claim 1 provided.

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