JPH06123274A - Power generation device utilizing tide level difference and power generation method - Google Patents

Abstract

PURPOSE:To generate power by utilizing vertical motion of a pair of floats XY caused by the change in tidal level and smoothly drive a power generation device even when the tide is changing between the ebb and flood at very small change in tidal level. CONSTITUTION:A pair of floats XY 1, 2 are moved vertically in a water tank 3. A power generator is driven by transducing devices 4, 5, 6 which transduce the above linear motion to rotary motion through a speed conversion device, for generating power. When change of the tide is small, a solenoid valve 8 between the side of sea and the water tank 3 is closed. The level inside the water tank 3 is adjusted by opening and closing solenoid valves 12, 13 of a level water tank 11 provided separately from the water tank 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a buoyancy power generation device and a power generation system using a tide level.

[0002]

2. Description of the Related Art Conventionally, there have been provided various power generation methods utilizing a difference in tide level at high tide. Of these, Japanese Examined Japanese Patent Sho 53-1
Japanese Patent Publication No. 910 and Japanese Patent Publication No. 53-18658 disclose a power generation device and a power generation system that utilizes a tide difference to convert linear motion into rotary motion and generate power by the obtained rotary motion.

Of the above known examples, the former (Japanese Patent Publication No. 53-19)
No. 10 gazette), a bellows pump is erected directly below a weight body that moves up and down according to the elevation of the tide level, and when the bellows pump is compressed or expanded, seawater is taken out to the land side through a pipeline and pumped to a higher place. , Hydroelectric power is generated from the pumped seawater. The latter (Japanese Patent Publication No. 53-1865)
No. 8) regards the rise and fall of the tide level as the volume change of the air in the main tank and the auxiliary tank installed upside down, and uses the compressed air or depressurized air generated in the tank to rotate the turbine. Is.

[0004]

However, in the former case, it is necessary to install a bellows pump in seawater and to send seawater to a high place by compressing and expanding the bellows pump, which requires a lot of labor and cost for the equipment. To be Also, the latter is excellent in that it has a power generation capacity that does not change even during periods of low tide in the middle of high tide, but it requires a large equipment cost to install an inverted main tank and auxiliary tank and There is a problem in that a complicated circuit is required in utilizing the pressure change of 2 for power generation.

An object of the present invention is to solve the above problems and provide a power generator and a power generation system which are simple in equipment and can be reliably driven even when the high tide is switched to realize continuous power generation. Is what you are trying to do.

[0006]

In order to achieve the above object, in the first invention of the present invention, a water tank which communicates with the sea side through a solenoid valve A, and a vertical movement based on the fluctuation of the tide level in the water tank. A pair of moving floats XY, a conversion device that interlocks with the floats XY to make a linear motion in one direction a rotary motion, and the water tank are isolated from each other, and communicate with the water tank via solenoid valves B and C. A water storage device provided with a water level adjusting tank is provided, and in this water storage device, opening / closing of the solenoid valves A, B and C are controlled, and the water tank and the water level adjusting tank are communicated with each other immediately before the switching of the high tide, and the float XY. A control device for providing a starting force is provided on one side of the power generation device, and the rotational motion transmitted to the conversion device is connected to a generator via a gear or other speed conversion device to form a power generation device using a tide difference.

According to the second aspect of the invention, a water tank which communicates with the sea side via the solenoid valve A, a pair of floats XY which moves up and down in the water tank based on the fluctuation of the tide level, and a linear line which is interlocked with the float XY. A water storage device A is provided, which is provided with a conversion device for converting the motion into a rotational movement in one direction and a water level adjusting tank which is isolated from the water storage tank and communicates with the water storage tank via electromagnetic valves B and C. At A, a control device for controlling opening / closing of the solenoid valves A, B and C is provided with a controller for connecting the water storage tank and the water level adjusting tank to give a starting force to one of the floats XY immediately before the change of the high tide. And a pair of floats XY that move up and down based on fluctuations in tide level inside the water tank
And a conversion device that interlocks with the float XY to convert linear motion into rotational motion in one direction.
The rotary motion transmitted to the converters of the water storage devices A and B was connected to a generator through a gear and other speed converters to form a power generator utilizing the tide difference.

According to the third aspect of the invention, a power generator using a tide difference is provided in which a siphon is installed on the inlet side of the water storage tank communicating with the sea side. In the fourth aspect of the invention, the linear motion of the pair of floats XY that moves up and down with the fluctuation of the sea level in the water tank communicating with the sea side via the solenoid valve A is converted into rotary motion, and the speed is converted via the speed converter. A power generation process that drives the generator by increasing the rotation speed,
Immediately before the highest tide level, the solenoid valve A is closed and only the solenoid valve B is opened to connect the water tank and the water level adjusting tank to lower the water level in the water tank. At the starting step 1 in which the starting force is applied and the solenoid valve A is closed just before the lowest tide level, only the solenoid valve C is opened and the water stored in the starting step 1 is sent from the water level adjusting tank to the water tank. From the starting step 2 in which a starting force by buoyancy is applied to the other of the floats, a power generation method using a tide difference is adopted.

In the fifth invention, solenoid valves A, B and C are provided so as to interlock with the tide level by the water level gauge based on the tide table, and the tide level difference-based power generation which automatically controls the opening and closing of each solenoid valve is used. It was a method.

[0010]

According to the first aspect of the invention, the linear motion is converted into the rotational motion in one direction in conjunction with the pair of floats XY, and the rotational motion is made to be the rotational speed suitable for power generation through the speed conversion device to drive the generator. As a result, it is easy to generate electricity. Further, as a water storage device, a water storage tank having an electromagnetic valve A, in which the pair of floats XY are floated, and a water level control valve which is isolated from the water storage tank and whose communication is controlled by electromagnetic valves B and C are provided. As a result, the float XY is moved up and down based on the change in seawater tide level. or,
Since the control device for controlling the opening and closing of the solenoid valves A, B and C is provided, the float XY can be moved up and down according to the change of the tide level during normal low tide and high tide, and the float XY can be changed during the change of high tide. It is designed to give starting power to. For example, the electromagnetic valve A is closed immediately before the high tide, and the electromagnetic valve B is opened to introduce the seawater in the water tank into the water level adjusting tank, whereby the water level in the water tank is lowered and the float XY is lowered to start the force. give. Normally, there is almost no change in the water level when converting from high tide to low tide, but by using the water level control tank in this way, it is possible to move the float, and then when the low tide begins to appear the natural water level change You can Also, close the solenoid valves A and B immediately before low tide,
It is possible to open the solenoid valve C to raise the water level in the water storage tank and to apply the starting force of the float.

In the second aspect of the invention, a water storage device A having a water level adjusting tank which is isolated from the water storage tank and communicates with the water tank via electromagnetic valves B and C, and a water storage device B having no water level adjusting tank. By providing the water storage device A, it is possible to obtain the starting force of the float at the time of switching of the high and low tides, and the water storage device B is always in communication with the sea side to allow the float to move up and down based on the natural fluctuation of the tide level. Thus, the starting force of the water storage device B enables the generator to be driven without interruption.

When the water storage device A and the water storage device B are alternately arranged, the water storage device A works as a supplement to the power generation by the water storage device B even when there is no power generated by the water storage device B when the high tide is switched. Therefore, a strong power generator can be provided by alternately installing a plurality of these. In the third aspect of the invention, since the siphon is installed on the inlet side of the water tank communicating with the sea side, even when the tidal flow on the sea side is disturbed, a stable tide level change can always be realized in the water tank via the siphon. You can

In the fourth invention, when the solenoid valve A is opened,
A pair of floats XY floating in the water tank moves up and down according to the change in tide level. The linear motion due to this vertical movement is converted into rotary motion, the speed is converted, and the generator is driven to generate electricity. Then, when the tide level fluctuation at the time of switching the high and low tides is small, the solenoid valve A is closed and only the solenoid valve B is opened immediately before the highest tide level so that the water tank and the water level adjusting tank communicate with each other to store the water. Since the seawater in the tank flows into the water level adjusting tank to lower the water level, one of the floats descends due to gravity to give a starting force. Further, the solenoid valve A is closed immediately before the lowest level of the tide, and only the solenoid valve C is opened to send the seawater in the water level adjusting tank to the water storage tank, so that the other of the floats is given a starting force by buoyancy. . When the tide level changes smoothly, solenoid valve A is opened to generate electricity by changing the water level that communicates with the sea side, and when ebb and flow are changed, solenoid valve A is closed and solenoid valve B or C is opened to store water. By controlling the water level by communicating with the water level control tank, continuous power generation became possible.

In the fifth aspect of the invention, the switching can be automatically performed by automatically controlling the opening and closing of the solenoid valves A, B and C in association with the fluctuation of the high and low tide level by the water level gauge installed on the sea side. Accurate control is possible by calculating using the tide table.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment will be described below with reference to the drawings. FIG. 1 is a sectional view of an essential part showing an embodiment of the device of the present invention.
1 is a float X, 2 is a float Y, and the pair of floats XY float above the water level in the water tank 3 and move up and down according to the change in the tide level. Numerals 4 and 5 are wires, and numeral 6 is a pulley, which is a conversion device for converting the vertical movements of the floats 1 and 2 in the vertical direction into rotational movements. The pulley 6 is a ratchet type and is controlled so as to rotate only in one direction.

In FIG. 2, reference numeral 7 denotes a speed conversion device, which is installed so as to convert the rotation of the pulley 6 by the engagement of gears and pinions to drive the generator. 8 is solenoid valve A
The sea side and the water storage tank 3 can communicate with each other. Reference numeral 9 is a siphon, which is installed between the sea side and the solenoid valve A8 and is provided so that the turbulence of sea water does not reach the water storage tank 3.
Reference numeral 10 is seawater, and 11 is a water level adjusting tank, which is provided in the water storage tank 3 in the illustrated example, but is not limited to this. A solenoid valve B 12 is provided on the side wall of the water level adjusting tank 11. A solenoid valve C 13 is provided at the bottom of the water level adjusting tank 11. The water level control tank 11 is separated from the water storage tank 3, and the solenoid valves 12, 13
Can communicate with the water storage tank 3, respectively. 14 is a water gauge. In the figure, HL is the highest tide level, LL is the lowest tide level, CL is the water level in the water tank 3 adjusted by the solenoid valve B, and in the embodiment, it is at a half position between HL and LL. Provided.

In the case shown in FIG. 1, the solenoid valve A8 is opened and the solenoid valves B, C, 12, and 13 are closed. From the sea side, through the siphon 9 and the solenoid valve 8, the inside of the water tank 3 is shown. The water level fluctuates depending on the tide level fluctuation, and the float X
Y, 1, 2 move up and down. This linear motion is converted into rotational motion, and the speed is changed to drive the generator. 3 and 4 are explanatory views showing the states immediately before and after the highest and lowest tide levels. In FIG. 3, the seawater 10 in the water tank 3 is about to reach the highest level, and the solenoid valve B12 The water level of the water storage tank 3 is lowered by the amount of the seawater 15 by opening the tank and pouring the seawater into the water level adjusting tank 11. The float XY was lowered due to the drop of the water level, and then the tide was linked to the time when the tide naturally dropped as the low tide.

In FIG. 4, the seawater 15 which has entered the water tank 3 in FIG. 3 is returned to the water tank 3 by the solenoid valve C13 at the bottom. In both cases of FIG. 3 and FIG. 4, the solenoid valve A8
Is closed. Immediately before the highest and lowest tide levels, the water level in the water storage tank 3 is changed by opening the solenoid valve B or C, and a starting force is applied to the float XY.

5 and 6 show another embodiment, in which a water storage device A 16 has a water level adjusting tank 11. 17 is a water storage device B, and 18 is a modification of the water storage device A and has a water level adjusting tank 11. It is desirable to alternately arrange the water storage devices A and the water storage devices B. Numerals 19 and 20 are rolls connected to the float XY via wires, and drive shafts 25 via gears and the like.
It is connected to and is designed to drive a generator. twenty one,
A roll 22 is connected to the float XY which moves up and down by the water storage device B17 via wires. The linear motion of the float XY is converted into rotational motion, and the rotation is transmitted to the drive shaft 25 via the gear.

Rolls 23 and 24 convert the linear motion of the float XY by the water storage device A18 into rotary motion, and transmit the rotation to the drive shaft 25 via gears and the like. When the buoyancy generated in the float XY is calculated from theoretical values, the specific gravity of seawater in the float XY is set to 1.025, and the volume of seawater discharged by the float is calculated assuming that the height, the width is 1 m, and the length is 5 m. (1 × 1 × 5 × 1.025), and a buoyancy of 5.125 tons is obtained.

Further, in the float Y, the weight of the float is hung on the wire as a downward power source. If the material is an iron plate, the specific gravity is 7.250, the height,
Using a float having a width of 1 m, a length of 5 m, and a thickness of x, the calculation formula is {2 (1 × 1) +4 (1 × 5)} x. 22x × 7.250 ≦ 5.125 x = 0.0321m Therefore, in order to obtain the same gravity as the buoyancy obtained by the above float X, a 3.21 cm iron plate should be used.

When the power generation is logically calculated, the wire,
The loss due to the conversion device such as a pulley is 10%, and the loss due to the speed conversion device up to the generator is 40% when four gears each having a loss amount of 10% are connected.
With, an output of 5.125 × 0.9 × 0.6 = 2.7675 KW is obtained.

By providing the float XY as large as 2 times and 3 times, the generated power can be extremely increased to 5.535 KW and 8.302 KW.

[0024]

As described above, according to the present invention, an extremely large electric power can be obtained by the simple device according to the vertical movement of the pair of floats XY. Moreover, when it approaches the highest or lowest tide level, the water level adjusting tank can be used so as to give the starting power to the float XY, and as a whole, a highly efficient power generator and power generation system can be provided. Could be provided.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an essential part of a device of the present invention.

FIG. 2 is a plan view of a speed conversion device for a generator.

[Figure 3] Illustration of the state of the water level control tank immediately before the highest tide

[Figure 4] State explanatory diagram of the water level adjustment tank just before the lowest tide level

FIG. 5 is an explanatory diagram in which water storage devices AB are arranged.

FIG. 6 is an explanatory view of a mechanism for converting a linear motion of the float into a rotary motion.

[Explanation of symbols]

 1, 2 Float XY 3 Reservoir 4, 5, 6 Converter 7 Speed converter 8 Solenoid valve A 9 Siphon 12 Solenoid valve B 13 Solenoid valve C 14 Water level gauge

Claims (5)

[Claims] 1. A water tank which communicates with the sea side via a solenoid valve A, a pair of floats XY which moves up and down based on fluctuations in tide level in the water tank, and a linear movement which is interlocked with the float XY. And a water level adjusting tank which is isolated from the water tank and communicates with the water tank via solenoid valves B and C. The water storage apparatus is provided with the electromagnetic valve. A control device that controls opening and closing of A, B, and C, connects the water storage tank and the water level adjusting tank to give a starting force to one of the floats XY immediately before the change of the high tide, and transmits the rotation to the conversion device. A power generator using tide difference, characterized in that the motion is connected to a generator via a gear and other speed converters. 2. A water tank which communicates with the sea side via a solenoid valve A, a pair of floats XY which moves up and down based on fluctuations in tide level in the water tank, and a linear movement which is interlocked with the float XY. A water storage device A is provided, which includes a conversion device for rotational movement in a direction and a water level control tank which is isolated from the water storage tank and communicates with the water storage tank via electromagnetic valves B and C. In this water storage apparatus A, A control device is provided which controls the opening and closing of the solenoid valves A, B and C, communicates the water storage tank with the water level adjusting tank immediately before the change of the high tide, and gives a starting force to one of the floats XY.
It is provided with a water tank which communicates with the sea side, a pair of floats XY which move up and down in the water tank based on the fluctuation of the tide level, and a conversion device which interlocks with the float XY and converts linear motion into one-direction rotational motion. A water storage device B provided
A power generator using a tide difference, wherein the rotary motion transmitted to the converters B and B is connected to a generator via a gear and other speed converters. 3. The power generator using the tidal range according to claim 1, wherein a siphon is installed on the inlet side of a water tank communicating with the sea side. 4. A pair of floats X that move up and down in response to a change in sea level in a water tank communicating with the sea side via a solenoid valve A.
A power generation process in which the linear motion of Y is converted into a rotary motion, and the rotation speed is increased via a speed conversion device to drive a generator, and the solenoid valve A is closed and the solenoid valve B is closed just before the highest tide level. By opening the water tank to lower the water level in the water tank so that the water tank and the water level adjusting tank communicate with each other, the starting step 1 in which one of the floats is given a starting force by gravity, and the solenoid valve A is set immediately before the lowest tide level. A tide level difference consisting of a closing step, opening only the solenoid valve C, sending the water stored in the starting step 1 from the water level adjusting tank to the water tank, and giving a starting force by buoyancy to the other of the floats. Power generation method used. 5. The solenoid valve A, B and C are provided so as to interlock with the tide level by a water level gauge based on the tide level table, and the opening and closing of each solenoid valve is automatically controlled. Power generation method using tide difference.