JP2013217361A - Variable blade waterwheel power-generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively provide a variable blade waterwheel power-generation device which can be easily installed, is compact, has high performances and is easily maintained, in consideration of such a problem that, in a waterwheel for water flow power-generation, blades are movable, therefore, the blades are able to move and get to be horizontal relative to a water flow to decrease resistance during a return semicircle, the water flow flows through the inner part of the waterwheel, therefore, a water flow pressure from an inner side is applied to the variable blades to decrease an operation efficiency and, further, floating waste or the like tangles with the blade.SOLUTION: By providing movable blades 5 in which it is basically improved that a water flow flows through an inner part of a waterwheel, and fulcrums of rotation shafts of the variable blades and movable fixation positions thereof are located approximately on the middle rather than an edge part, a movable circle is minimized, the water flow during negative pressure resistance against the water flow is utilized, self cleaning is performed while closing a movable blade, an outer circumference of the waterwheel is covered, a negative pressure resistance is reduced, a rotation efficiency is improved, maintenance can be minimized and, further, a ring-shape hole is opened on the center and is inserted to a tower vertically movably to facilitate the maintenance.

Description

Detailed Description of the Invention

The present invention relates to renewable natural energy stream power generation.

At present, due to the nuclear power plant accident, the power shortage is serious and it is necessary to use fossil fuels of old technology that is not the CO2 reduction target in a situation where it is necessary to rely on thermal power generation.

In recent years, solar power generation and wind power generation, which are renewable energy from nature, have finally become widely known and are spreading. However, they depend greatly on the weather and the amount of power generation is subtle and stable supply cannot be expected. It is a thing.

There are also dam power generation in Japan, which is blessed with water, but it is well known that it has not been popular for many reasons in recent years, and small hydropower generation using river flow has been developed and put into practical use. The efficiency is good, but it is still an auxiliary because it is small.

Therefore, ocean energy is attracting attention, and its energy density is said to be about 800 times that of air, and there is an enormous amount of energy that is powerful and infinite. Yes (wave power generation) Utilizing seawater temperature difference (ocean temperature difference power generation) Using tide flow (ocean current / tidal current power generation), etc. The power generation method by this ocean current / tidal current can be converted into energy most efficiently It seems to be a method, and in the conversion method example, the propeller turbine type is common, and the wind turbine generator is submerged as it is in the form of submerging the fan blades of the home in the form of reaction The main idea is to get energy.

The propeller turbine type has the advantage that the structure is simple and the cost is low and the conversion efficiency is about 44%, but there is a disadvantage that the flow rate is slow and it does not increase in size. For other examples of energy conversion methods, the Saponius type turbine method is the starting torque However, the conversion efficiency is as low as 20 to 30% and it is not suitable for enlargement.
The Darius type water turbine system is simple in structure, rotates faster than the flow velocity, and has a conversion efficiency of 30 to 45 percent, but has a drawback of poor self-startability.
The conversion efficiency of the cross-flow type water turbine system is the highest at 60%, and it is said that it can be applied to tidal currents without any disadvantages.

Propeller turbine type has the disadvantage that it will not increase in size, but it also increases the installation cost, and because the side of the propeller becomes longer due to the increase in size of the propeller, there is also a problem in strength and maintenance due to enormous energy Therefore, it is considered that the cross-flow type water turbine method is basically suitable.

Also in the patent document, Patent Documents 1 to 2 will be described with reference to means for further increasing the conversion efficiency based on the cross-flow type turbine method.

The “water turbine module and power generation underwater turbine device” disclosed in Patent Document 1 includes a movable blade turbine having blades that change direction in response to a water flow (FIG. 5), and includes a single blade. It has a pivot that allows it to rotate freely at the end of the circular turbine, and it receives water pressure on the blades of the semicircular part of the circular water wheel and is fixed to a stopper on the central shaft to convert it into rotational motion. In order to reduce the resistance during reverse water flow away from the stopper and to reduce the resistance during reverse water flow, it is also disclosed in FIG. 6 and is intended to generate electricity by turning a linked generator.

Further, in the “apparatus and method for generating power from an underwater flow” in Patent Document 2, two water turbines for power conversion from the water flow are arranged side by side to improve efficiency and performance. It is disclosed in (FIG. 13) and (FIG. 18) that it has the 1st louver which can rotate, the 2nd louver which can rotate, and a rotation control structure, The said patent document 1 In the same way, the water flow is passed through the water turbine and the louver is rotated to become horizontal with the water flow, reducing the resistance during reverse water flow and turning the interlocking generator to generate electricity.

  Utility model registration No. 3139609   Patent publication 2011-529151

The “turbine module and power generation underwater turbine device” of Patent Document 1 is a device in which the blades of the turbine wheel are horizontal to the water flow as shown in FIG. Since the movable circle is large (about 180 °) because the is at the end of the variable vane, the movement is slow, and the purpose is to reduce the resistance during reverse rotation by passing the water flow through the water wheel and making the variable vane horizontal to the water flow, but again the water pressure The water flow flowing inside the water turbine becomes negative pressure resistance until it stops at the stopper and the rotation efficiency is lost, and the operation efficiency is lowered.Furthermore, the water flow passes through the water wheel, and suspended dust is entangled. There is a risk that it will hinder movement and maintenance is difficult.

In the “apparatus and method for generating power from an underwater flow” in Patent Document 2, the rotational axis position of the rotatable louver enters the inside of the louver and the movable circle is being reduced (FIG. 13) to (FIG. 18). As shown in), the water flow flowing inside the water turbine is negative pressure until it reaches the position where it receives water pressure again while reducing the resistance at the time of reversal by turning the rotatable louver horizontally through the water flow inside the water wheel and reducing the resistance during reverse rotation. It causes resistance and rotation loss, lowers the operating efficiency, and again the water flow passes through the water wheel, so there is a risk of entanglement of suspended solids etc. Yes, it is good for unidirectional flows such as rivers, but it is not suitable for ocean currents and tidal currents that are said to change four times a day.

To solve the above problems, easily install, and to solve the problem with the variable wing turbine generator of the present invention that can be provided in a compact, high-performance, easy to maintain and inexpensively, and contribute to future energy problems Is an issue.

Means to solve the problem

In resolving the problem, the flow of water through the water turbine is fundamentally changed, and the position of the rotary shaft of the variable blade and the movable fixed position are located in the middle of the end to make the movable circle smaller and counter to the water flow. By using this water flow, self-cleaning can be performed while closing the movable blade, and the outer periphery of the water wheel is closed to reduce the negative pressure resistance and increase the rotation efficiency, thereby solving the problem.

The upper surface and side view of the spherical water turbine power section of the variable blade water turbine power generator of the present invention The top view of the generator integrated turbine power section of the variable blade turbine generator of the present invention Cross-sectional view of the generator-integrated side sphere part of the variable blade turbine generator of the present invention The side view which shows embodiment of the variable blade | wheel water turbine generator of this invention

Embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a top view and a side view of a turbine power section of a variable blade turbine generator according to the present invention, and both ends of a movable blade (3) are inserted into a hole around an edge of a central shaft (2) so as to be movable. Install sequentially. In other words, the movable wing (3) is moved by water pressure, and the movable wing opens and encourages rotation by receiving the pressure of the water flow such as tidal current in about half of the circle. Since the fish scales are naturally closed so that they receive water flow from the front, resistance can be released on the outer periphery of the water turbine without passing water flow inside, and the water flow corresponding to the movable wing (3) is the opposite of when it is in operation Since it flows in the direction, dust and floating substances are self-cleaned and the movable shaft position is set to about one third, so that the movement is small (about 45 °), so that a quick and smooth rotational movement can be achieved.

Further, the spherical shape is the spherical water turbine power unit (1) that is less susceptible to resistance in water, can easily avoid dust and floating objects, can easily minimize maintenance, and can keep rotating. .

Next, description will be made based on the top view of the power generator integrated turbine power section of the variable blade turbine power generator of the present invention shown in FIG. The above-described thin movable blade (5) formed in a thin shape in the center float (4) sealed in the center by thinly forming the spherical water turbine power section (1) connected in a circular shape as described above. As shown in FIG. 3, as shown in FIG. 3, a generator (7) is placed inside the semicircular generator chamber (7) below the thin water turbine power section (6). 8) equipped with a gear shaft (9) that can move the gear shaft (9) is installed and sealed, and a thin water turbine power section (6) is mounted on the gear shaft (9), and a generator (8) gear shaft (9) thin water turbine power section Assemble (6) to be linked.

Further, like the semicircular generator chamber (7), a float chamber (10) which is a semicircular upper portion is mounted and fixed to the upper portion of the gear shaft (9) to form a sphere, and this float chamber (10) serves as a float. The generator-integrated sphere (11) having a series of can be kept floating on the water surface just like a fishing ball.

In addition, since it can be submerged by adjusting the water injection or the like in the float chamber (10) in a floating state, as shown in the side view of the embodiment of the variable blade turbine generator of the present invention, It can be lowered from the sea, or from a ship, a raft, etc., can be made on the sea, can be immersed in the water flow, or can be rotated in the same direction regardless of the posture, up, down, left, or right. There is also an increase.

Further, a hole is opened at the center of the thin turbine power section (6) described above to form a ring shape or a donut shape. FIG. 4 is a side view showing the embodiment of the variable blade turbine generator of the present invention. It can be inserted in layers like a ring throw. Maintenance can be facilitated by pulling it up to the top of the tower.

Effect of the invention

When the variable wing turbine generator of the present invention is implemented, it is possible to generate power regardless of whether it is on the surface, underwater or underwater, such as ocean currents, tidal currents, and rivers, and the water pressure from which direction of 360 ° can be changed to power, Even if the wave moves back and forth, the rotation direction does not change and the power generation is linked and linked to increase the amount of power generation, providing high performance and low cost, and reducing the maintenance cost by increasing durability. It can contribute to the creation of a clean environment as the center of next-generation renewable energy power generation that is not required at all.

DESCRIPTION OF SYMBOLS 1 Sphere water turbine power part 2 Center shaft 3 Movable blade 4 Center float 5 Thin movable wing 6 Thin water wheel power part 7 Generator room 8 Generator 9 Gear shaft 10 Float room 11 Generator integrated sphere

Claims (1)

Using the water flow at the time of reversal negative pressure resistance against the water flow by reducing the resistance by increasing the fulcrum and the movable fixed position of the rotating wing around the circumference and positioning the movable fixed position to the middle from the end and reducing the moving circle to reduce the strength. Self-cleaning is possible while closing the movable wing that covers the outer periphery of the water wheel, preventing the water flow from passing through the water wheel and reducing the reverse negative pressure resistance. The pressure can be changed to rotational power in a certain direction, the scale can be set by interlocking connection, a hole is opened in the center, inserted into the tower and placed in multiple layers, moving up and down, making maintenance easy and fuel-free semi-permanent power generation Variable wing turbine generator

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