JP2001221142A - Converter for energy of water power, wave power and wind power - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device having a firm structure at a lower cost of equipment to be efficient further with an output of energy equalized to convert energy, in the device of strong structure converting energy of water power on the water surface and in the underwater, wave power and wind power. SOLUTION: In a structure positioned on the water surface or in the underwater to make buoyancy adjustable, this converter device for energy of wave power and wind power, by providing a wave back member in the forward of a wave advancing direction of this structure to generate a forward/backward flow in the water surface with a wave colliding against this wave back member also providing water turbine rotated by the forward/backward flow before the wave advancing direction of the wave back member, obtains energy by rotation of this water turbine, also, by arranging a wind direction member turned corresponding to a wind direction on the water surface in an upper part of the structure and providing a windmill in this wind direction member, obtains energy by rotation of this windmill.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a wind-wave energy conversion device that converts water, energy, such as water flow, wave power, and wind power on the water surface or in water.

[0002]

2. Description of the Related Art In recent years, power generation using wave power or wind power has been attracting attention as environmentally friendly energy using natural energy, and its development is progressing. Conventionally, various inventions have been proposed for wind power generation, and converting a strong building wind around a high-rise building into power generation energy is disclosed in JP-A-8-200204, JP-A-8-128384, and -3031
No. 81, etc., and the technology disclosed in Japanese Patent Application Laid-Open No. 8-200204 discloses an efficient method in which a power generator using a propeller-type wind turbine is controlled to move on rails provided on the side of the building. It can convert energy well.
Also disclosed in Japanese Patent Publication No. 128384 is a power generator using a propeller-type windmill in the middle of the wind path by fixing a wind guide path on the roof of a high-rise building, and disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 4-303181. In the technique, a wind power generator provided with a wind receiving portion having a concave portion on a semi-cylinder is installed in a high-rise building. Furthermore, the present inventors have already proposed a robust wind energy conversion device having a simple structure as Japanese Patent Application No. 11-337189.

Although various inventions have been proposed for wave power generation, Japanese Patent Application Laid-Open Nos. 5-1407 and 7-224750 disclose the use of energy by which waves on the sea surface move up and down at certain positions. Japanese Patent No. 2526391 and the like also propose that energy conversion of a temperature difference in addition to the energy that causes the sea surface to move up and down at a fixed position by a wave is performed. Japanese Patent Application Laid-Open No. 5-339927 proposes an invention in which a propeller type turbine is rotated by a flow of river water or a tide to convert energy.

[0004]

By the way, although the conventional wind power generation has been put into practical use, the wave power generation has been put to practical use in Japan, which is surrounded by a vast sea. That is not the case.
The reason for this is that the energy conversion value due to the vertical movement of the sea surface is small relative to the manufacturing cost of the device. In addition, as proposed in Japanese Patent Application Laid-Open No. 5-339927, a device using the flow of river water has a limited use area. On the other hand, being small was a problem. Propeller-type water turbines cannot efficiently convert energy unless the diameter is increased. Therefore, they do not rotate unless the flow is fast, and are not suitable for use on the sea or in rivers. In addition, as a type of turbine, a horizontal turbine with blades extending in the horizontal direction is also conceivable, but since only the lower radius of the turbine can be used, efficient energy conversion requires a large rotating radius of the turbine. There is a problem that it is unsuitable for use on the sea or in a river like a water turbine of a type. In addition, since the conversion efficiency of the wave energy is low, the energy conversion device must be used in a wide area, the equipment cost is high, and the energy fluctuation is severe, so that there is a problem that it is difficult to use the energy conversion device.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object the flow of water (seawater) on the water surface or underwater.
A device that efficiently converts waves and offshore winds into energy such as electric power. It has a robust structure and lower equipment costs, and efficiently converts water power, wave power and wind power on the water surface or in water. It is an object of the present invention to provide a device that converts the energy into energy.

[0006]

Means for Solving the Problems In order to solve the above-mentioned problems, the invention according to claim 1 is directed to a structure located on a water surface or underwater whose buoyancy can be adjusted by a base levitation body at a predetermined water depth. This is a hydraulic energy conversion device in which a vertical water turbine having a plurality of vertically extending plate-shaped blades is arranged while mooring an object with a rope so as to control an attitude according to a flow direction.

In order to solve the above-mentioned problem, an invention according to claim 2 is directed to a structure that floats on the surface of water whose buoyancy can be adjusted by a basic levitation body at a predetermined depth, and which is located forward in the wave traveling direction of the structure. A water wheel that generates a flow that moves forward and backward on the water surface by the wave hitting the wave returning member, and that is rotated by the flow of seawater back and forth before the wave traveling direction of the wave returning member. And a wave energy conversion device that obtains energy by rotation of the water turbine.

According to a third aspect of the present invention, there is provided a structure which floats on a surface of a water surface, the buoyancy of which is adjustable by a basic buoyant body having a predetermined depth. A wave returning member is provided, and a wave that advances and retreats to the water surface is generated by a wave hitting the wave returning member, and a water wheel that rotates by a flow that moves forward and backward before the wave traveling direction of the wave returning member. A wind direction member that rotates in accordance with the wind direction on the water surface is provided above the structure, and a wind turbine is provided on the wind direction member. It is a wave power and wind energy conversion device that obtains energy by rotation.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the wave power and wind energy converter according to the present invention will be described with reference to the drawings. First, the energy of waves is explained. Since the energy of waves on the ocean is swells and waves, seawater on the sea surface only moves up and down at fixed positions. An energy conversion device that operates has a low energy conversion efficiency. However, near the quay the surf near the quay hits the quay and becomes a wake, creating a large circulating tidal current.
It creates a flow that moves (left and right). Therefore, the present inventors have artificially provided a structure corresponding to the quay, artificially create a surf and a wake, and before and after seawater (left and right).
If the water wheel is rotated left or right or rotated according to the flowing flow,
The present inventors have found that it is possible to efficiently convert wave energy into energy such as power generation, and have arrived at the present invention. That is, a wave-return member is provided as a structure corresponding to a quay, and a flow that reciprocates back and forth or recirculates in the vicinity is created by the wave-return member. As it floats on the water surface, it follows large seawater movements such as ebb and flow, but does not follow small seawater movements such as waves and behaves like a fixed structure, This point is different from the behavior of a ship or the like, and it has been found that efficient wave energy conversion can be achieved by rotating a water wheel disposed on this structure. In addition, the wave power fluctuates intensely due to the weather, but it has been found that the energy output can be further leveled out by focusing on offshore wind power.

A preferred embodiment of the present invention will be described below with reference to the drawings. Example 1 (1) Wave Energy Conversion Portion of Example 1 FIG. 1 is a side view of the whole of this example and a state of use.
FIG. 2 is a plan view from above of a cross-section of the structure of FIG. In FIG. 1, the wave state near the shore A of the shore repeats the process in which the colliding wave B hits the quay A and reverses to become a wake C. However, the wave is reversed and becomes a wave C to form a large circulating flow. The present embodiment is a floating structure 1 that does not move up and down due to swells and waves that fluctuate in a short period on the sea, but follows the vertical fluctuation of the tide that changes daily.
The structure 1 is provided with a wave returning member corresponding to the quay wall A. However, this circulating flow occurs only in the vicinity of the structure 1, but no circulating flow occurs offshore, and the sea surface only moves up and down.

First, the structure 1 is configured to float at a certain height above the sea surface by a pair of foundation levitation bodies 2. The foundation levitation body 2 is provided with a plurality of buoyancy adjusting partitions 21. And a plurality of buoyancy adjusting chambers 22 in the horizontal direction. A seawater inlet / outlet 23 is provided on the bottom surface of each buoyancy adjusting chamber 22, and a compressed air supply port 24 is provided on the upper surface, and a distribution valve 241 and a compressed air piping are provided on the compressed air supply port 24 from a compressor (not shown). Controlled compressed air is supplied via 242. And the rear end of each base levitation body 2
Since the rope 251 was attached to the side of each of the 25, the other end of the rope 251 was fixed to an appropriate place on the sea floor with an anchor (not shown) or the like, and the amount of seawater in each buoyancy adjustment chamber 23 was adjusted. It is configured so that the attitude of 2 can be kept almost horizontal at a water depth of about 3 to 5 m, which is about three times the wave height. As shown in FIG. 3, the wing-shaped stabilizing member 26 is provided on both sides as a stabilizing member 26 for stabilizing when the foundation levitation body 2 receives a shear wave and when the structure 1 receives a wind from a lateral direction. Plank261
A connection stabilizer 262 is provided so as to connect the two base levitation bodies 2 to each other. A base frame 27 on which a generator as an energy conversion device is disposed is provided on an upper surface of the base levitation body 2, and a pair of small platforms is provided at a position slightly lower than the sea surface of the base frame 27.
271 is provided, and a pair of overhanging platforms 273 is disposed on the side surface at the position of the front end 272.
Is provided with a wave energy conversion member 3 on one side.

The wave energy conversion unit 3 has the first
Is provided with a horizontal water wheel 31. Horizontal water wheel
A plurality of blades 32 are provided on 31 so as to be orthogonal to the wave,
A driven generator 34 is connected to the shaft 33 of the horizontal turbine 31. The horizontal turbine 31 is located in front of the horizontal turbine 31 in the wave traveling direction.
To cover the 1/4 circumference of the horizontal upper part of the
A wave-return plate 41, which also serves as a sea-water guide plate as the first wave-return member 4, is fixedly provided over the entire width of the water-return member 31. Is rotated in the rotation direction D. The second wave returning member 5 is provided in front of the first wave returning member 4 in the wave traveling direction. Swing up and down following the wave at tip 273
(Two-dot chain line), and the swinging plate 51
A pair of arm members 52 extending from the oscillating plate 51 are provided. Is provided with a float 54 so that almost half of the wave returning plate 53 is floated, and the wave B 3 hits the wave returning member to generate a forward and backward flow in the horizontal direction, and the diverging wave B 3 on the upper side of the swing plate 51 is provided. The path of the seawater is changed from the interval G to the lower side, and a wave C3 is generated below the rocking plate 51.

As shown in FIGS. 2 and 3, the wave energy conversion unit 3 has a small platform as a second configuration.
Four vertical water turbines 35 are provided on the left and right of 271. The vertical turbine 35 is provided with a plurality of blade plates 352 perpendicular to the rotation axis 351 on the vertical axis, and guide plates 36 are provided at the front and rear so as to cover half of the vertical turbine 35, and the front and rear seawater are provided. It is arranged so as to rotate left and right with respect to the flow, and the left and right rotation of each vertical water wheel 35 (the driving force of one-way rotation in this embodiment)
A generator 353 is connected to convert the power to electric energy. In this case, as shown in FIG. 3 which is a front view which is a cross section of the structure of FIG. 2, the sea surface at each vertical water turbine 35 is similar to a state where the structure 1 is almost fixed to the seabed. State B4 and wake state C4
Are repeated, but each vertical water turbine 35 repeats the rotation state and the temporary stop state according to the flow.

[Operation] Since the wave energy conversion portion of the present embodiment has the above-described structure, the rope 251 attached to the rear end portion 25 of the structure 1 due to waves or ridges from offshore.
Moored, the structure 1 is washed away by waves and naturally
Front end 271 is located behind the travel of the wave and remains substantially constant. The basic levitation body 2 of the present embodiment is located at a depth of about 3 m. This depends on the height of the waves, but at such a water depth, the up and down movement of the seawater is usually small and the seawater is stable. Therefore, it follows large seawater movements such as the ebb and flow of the tide, but does not follow up and down movements of small seawater such as waves and the movement of swelling waves and underwater waves. By the buoyancy adjusting mechanism of the levitation body 2, the posture is kept horizontal at a constant height. Then, part of the waves and swells from the offshore are supplied by the first wave return plate 41 and the large second wave return plate 53, and the seawater flows on the upper surface of the stable member 262 of the structure 1 (B1, B2, B3, B4), and these wave returning members (4,
5), the seawater draws (C1, C
(2, C3, C4), and therefore, in the four vertical turbines 35, only the wave with a high water level drives the turbine, and the underwater with a low water level retreats below the turbine, so that the turbine is driven. Without
Therefore, energy is converted by a known generator or the like connected to the vertical water turbine 35 while rotating in one direction in the forward direction.

However, depending on the size of the wave, the structure 1
In the case of seawater on the upper surface of the stabilizing member 262, the sea wave (B1, B2, B3, B4) and the wave returning member (4, 5) are reversed and the wave (C1, C2, C3, C4) reciprocates But even in this case, four vertical turbines
The reference numeral 35 rotates forward (or reverse rotation) in the approaching wave and reverse rotation (or forward rotation) in the pulling wave. Of course, if only one of them rotates, energy can be converted by this rotational driving force. Further, in the horizontal water turbine 3, the approaching wave travels so as to cover the upper surface of the overhanging platform 272, and rotates the upper half blade 31 in the direction of arrow D in the forward direction. The lower half blade 31 is similarly rotated in the direction of arrow D in the same direction as the lower half blade 31 in coordination with the wave return plate 41 which also functions to guide the seawater so that the seawater is not hit. The energy is converted by a known generator or the like so as to generate only the positive rotation. Further, a large wave return plate 52 having a large surface following the vertical movement of the sea surface in front of the wave traveling direction of the structure 1 efficiently generates a large wave of seawater and a wave of the seawater, and the vicinity of the water wheel. By increasing the amount of seawater of the spilling waves and the submerging waves in the water, the rotational force of the water turbine 3 is increased, and the conversion of wave energy can be more efficiently taken out by the generator.

(2) Wind Energy Conversion Portion of Embodiment 1 As shown in FIG. 4 (a plan view of the offshore portion of the structure), the ceiling of the structure 1 in FIG.
A wind energy converter 6 is provided. Here, on the sea, the traveling direction of waves and swells does not always match the wind direction, and the horizontal wind turbine 62 having the wide blades 61 of the wind energy conversion device 6 has a wind direction different from the direction of the structure 1. It is necessary to efficiently change the direction of the horizontal wind turbine 62 with respect to Therefore, a windmill substrate 63 is provided on the upper platform 28 via a rotating member 65 so as to be rotated by the direction wing 64, and the blade plate 61 of the horizontal windmill 62 is forward in the lower half so as to receive wind pressure in the upper half. A wind guide plate 67 is provided at the rear of the wind turbine, and a plurality of blade plates 61 are provided so that the upper half of the horizontal windmill 62 is slightly curved toward the wind direction extending in the horizontal direction. In this embodiment, the plurality of blade plates 61 are slightly curved, but may be flat plates having a straight cross section. And
In case of strong wind, adjust the angle of wind guide plate 66
68, the wind pressure is reduced so as to cover the lower half of the horizontal wind turbine 62 from the lower half to a part of the upper half so that the blade plate 61 of the horizontal wind turbine 62 is not damaged. Is connected to a generator 68 so that wind power offshore can be efficiently extracted by the generator 67. In the first embodiment, if there is either a wave or wind, converted energy such as power generation can be obtained, and the output of energy can be leveled by using both wave power and wind power.

[Embodiment 2] Next, FIG. 5 shows an embodiment of a hydraulic energy conversion apparatus for converting energy into a tidal current such as the Kuroshio Current, a tidal current in the morning and evening, or a unidirectional flow of a river. It is explained along. That is, in a structure that floats on the surface of the water made buoyancy adjustable by the basic buoyant body 2 at a predetermined depth, the structure is moored with a rope (rope) 251 so as to control the attitude according to the flow direction, and in the vertical direction. A vertical water turbine 35 having a plurality of extending plate blades 352 is arranged. As shown in FIG. 5, the apparatus of the second embodiment employs the first and second water turbines of the first embodiment. This is a device excluding the wave returning member, the horizontal water wheel 31 and the members attached thereto, and the names of the members are the same, so that the description of the configuration is omitted. [Operation] The hydraulic energy conversion part of the second embodiment is the structure 1
Moored with a rope 251 attached to the rear end 25 of
The structure 1 is caused to flow by the tide and naturally the front end 272 of the foundation frame 27.
Is located behind the tidal current and remains almost constant.
The water level of the vertical water turbine 35 in the second embodiment is slightly lowered compared to the first embodiment by adjusting the buoyancy adjusting mechanism of the buoyancy adjusting chamber 22 of the base levitation body 2. Most of the 352 exists in the sea below the sea level B5, and the seawater flow is efficiently converted to the rotary drive of the water turbine.
Therefore, the apparatus according to the second embodiment operates when there is a flow of seawater or a river such as ebb tide or ebb tide without a wave or a wind. The four vertical turbines rotate continuously in one direction. The vertical turbine 35, which is a main part of the hydraulic energy converting portion of the second embodiment, can be easily extended in the direction perpendicular to the sea surface in structure, and can be made solid. Example 2
The vertical length of the blade plate 352 of the vertical water turbine 35 in
Although it was 3 m, it may be changed appropriately depending on the depth of the water flow,
A feature of the present embodiment is that the vertical design change of the blade 352 is easy. In the second embodiment also, since the upper platform 28 is provided with the wind energy conversion device 6, energy can be obtained if there is either a tidal current or a wind, and the energy can be obtained by using both the tidal current and the wind. The output can be leveled, and even with the apparatus of the first embodiment, the efficiency is somewhat reduced by the first and second wave returning members, but the use of the apparatus for tidal currents and river flows is not impeded.

Also, the tide such as the Kuroshio is at a depth of 6
When the tidal current such as the Kuroshio Current is used, the wind energy converter 6 is rather obstructed because it flows at a position of about 6 m at 6 knots, and it is removed by adjusting the buoyancy adjustment mechanism of the base levitation body 2. The structure 1 is kept submerged in the sea, and the position of the four vertical turbines 35 in the hydraulic energy conversion section is set to a depth of about 6 m to efficiently receive and rotate the energy of the tidal flow. In this case, the vertical length of the blade plate 352 of the vertical water turbine 35 may be about 5 m.

It is needless to say that the present invention is not limited to the above embodiments unless the characteristics of the present invention are impaired. Of course, it may be possible. Further, for example, although the above-described embodiments used a generator as the energy conversion, it is needless to say that various pumps may be used as a driving force. Of course, it may be used.

[0020]

As described above, according to the first aspect of the present invention, in a structure that floats on the surface of water whose buoyancy can be adjusted by a base floating body at a predetermined depth, the structure is oriented according to the flow direction. It is a hydraulic energy conversion device that is moored with ropes to control it and has a vertical turbine with a plurality of vertically extending blades of blades. In addition, since the length of the vertical blade can be relatively easily formed, the effect of efficiently converting the flow of water such as a tidal current into energy can be obtained.

According to the second aspect of the present invention, in a structure that floats on the surface of water whose buoyancy can be adjusted by a base levitation body at a predetermined depth, a wave returning member is provided in front of the structure in the wave traveling direction. While the wave hits the wave returning member, it generates a flow that advances and retreats to the water surface, and a water wheel that rotates by the flow of seawater before and after the wave returning direction of the wave returning member is provided. Since it is a wave energy conversion device that obtains energy, a part of waves and swells from the offshore is generated by the wave returning member, and the effect of being able to rotate the water turbine efficiently is to generate wakes and wakes. The effect is that the structure is relatively solid and the production cost can be reduced.

According to the third aspect of the present invention, in a structure that floats on the surface of water whose buoyancy can be adjusted by a base levitation body at a predetermined depth, a wave returning member is provided in front of the structure in the wave traveling direction. When the wave hits the wave returning member, a flow that moves forward and backward is generated on the water surface, and a water wheel that is rotated by a flow that moves forward and backward in front of the wave traveling direction of the wave returning member is provided. And a wind direction member that rotates in accordance with the wind direction on the water surface is provided on the upper part of the structure, a windmill is provided on the wind direction member, and a wave force that obtains energy by rotation of the windmill and Since it is a wind energy conversion device, in addition to the effect of the above-mentioned claim 1, it is possible to obtain high energy by efficiently converting wave power and wind power near the water surface and leveling the energy output. Doo is an effect that it can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view of a preferred embodiment 1 of the present invention as a whole and in use.

FIG. 2 is a plan view from above of the wave energy conversion part in a section—of the structure of FIG. 1;

FIG. 3 is a front view in section of the structure of FIG. 2;

FIG. 4 is a plan view of the wind energy conversion part shown in FIG.

FIG. 5 is a side view of the whole preferred embodiment 2 (hydraulic energy conversion unit) of the present invention and a state of use.

[Explanation of symbols]

 A: Wharf B, B1, B2, B3, B4: Sea surface of surf C, C1, C2, C3, C4: Sea surface of wake 1: Structure 2: Basic levitation body 21: Buoyancy adjusting partition 22: Buoyancy adjustment Chamber 23 ... Seawater inlet / outlet 24 ... Compressed air supply port 241 ... Distribution valve 242 ... Compressed air piping 25 ... Rear end 251 ... Rope 26 (261, 262) ... Stable member 27 ... Basic frame 271 ... Small platform 272 ... Front end 273 ... overhanging platform 28 ... upper platform 3 ... wave energy conversion unit 31 ... horizontal water turbine 32,352,61 ... impeller 33 ... shaft 34,353,69 ... generator 35 ... vertical water turbine 351 ... rotating shaft 36 ... guide plate 4 ... No. 1 wave-return member (seawater guide member) 41 ... wave-return plate (seawater guide plate) 5 ... second wave-return member 51 ... rocking plate 52 ... arm member 53 ... wave-return plate 54 ... float 6 ... wind energy conversion Part 62: Horizontal wind turbine 63 ... Wind turbine board 64 ... Direction wing 65 ... Rotating member 66, 67 ... Wind guide plate 68 ... Cylinder

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masaaki Nagashima 4-9-2 Saginumadai, Narashino-shi, Chiba 203 Ogura Mansion 203 F-term (Reference) 3H072 AA13 BB07 BB31 CC52 3H074 AA02 AA12 BB09 BB11 CC02 CC12 CC36 3H078 AA03 AA17 AA26 AA34 BB11 BB19 CC22 CC44

Claims (3)

[Claims] A buoyancy-adjustable buoyancy-adjusted buoyancy-adjustable structure for a buoyancy-adjusted structure, which is moored by a cable so as to control the attitude of the structure in accordance with the flow direction. A hydraulic energy conversion device, comprising a vertical water turbine having a plurality of elongated plate blades. 2. A structure that floats on the water surface and whose buoyancy is adjustable by a basic levitation body at a predetermined depth, wherein a wave returning member is provided in front of the structure in the wave traveling direction, and the wave hits the wave returning member. Along with generating a flow advancing to the surface of the water and a flow retreating, a water wheel is provided that rotates by the back and forth flow of seawater before the wave traveling direction of the wave returning member,
A wave energy conversion device, wherein energy is obtained by rotating the water turbine. 3. A structure that floats on the water surface and whose buoyancy is adjustable by a basic levitation body at a predetermined water depth, wherein a wave-return member is provided in front of the structure in the wave traveling direction, and the wave hits the wave-return member. Along with generating a flow that moves forward and backward on the water surface, a water wheel that rotates by a flow that moves forward and backward before the wave traveling direction of the wave returning member is provided, and energy is obtained by rotation of the water wheel, and A wave direction and wind energy conversion, characterized in that a wind direction member that rotates in accordance with the wind direction on the water surface is provided at an upper portion, and a windmill is provided on the wind direction member, and energy is obtained by rotation of the windmill. apparatus.