WO2017209041A1

WO2017209041A1 - Tidal current power generation device

Info

Publication number: WO2017209041A1
Application number: PCT/JP2017/019891
Authority: WO
Inventors: 濱岡　康正
Original assignee: 濱岡　康正
Priority date: 2016-05-31
Filing date: 2017-05-29
Publication date: 2017-12-07
Also published as: GB2564169A; GB201801203D0

Abstract

The present invention provides a tidal current power generation device which utilizes kinetic energy of a tidal current to generate power, and allows easier installation. Lower parts of a pair of parallel caissons (20) are embedded in a sea floor (G) along the direction of a tidal current, and upper parts thereof are located in the sea. A pair of caisson upper bodies (21) respectively have inner surfaces between which a space narrows backward along the direction of the tidal current and thereafter widens again with a neutral plane interposed therebetween, and outer surfaces parallel to each other. A barge body (30) is disposed across the pair of parallel caisson upper bodies, and both the outer surfaces thereof along the direction of the tidal current are made flush with both the outer surfaces of both the caisson upper bodies. Axial flow water turbines (1d) each located in an area having a wide space between both the caisson upper bodies are vertically suspended, respectively, on a front part and a back part of the lower surface of the barge body. Impellers of water turbines (1a-1c) are located on the upper side of a barge deck (31) and on the right and left outer surfaces of a barge under the water surface.

Description

Tidal current generator

The present invention relates to a tidal current power generation apparatus that generates power using kinetic energy of tidal current.

The tidal current generated by the rotation of the earth and the lunar attraction is an infinite energy source. Although it is desired to put the power generation device using this tidal current into practical use, there is a problem that the installation cost is high and power transmission is difficult.

Although there are such problems, power generation devices using waves have been devised so far because waves in the ocean and tidal currents generated by the earth's rotation and lunar attraction are infinite energy sources (for example, Patent Document 1). This device is configured to generate electricity by driving the turbine in the power generation chamber by utilizing the fact that the volume in the air chamber changes with the change in the water level due to the waves.

However, the power generation device using waves naturally has its power generation capacity. This is because the generation of waves depends greatly on the weather. Therefore, when a large wave is generated in bad weather, the power generation capacity is increased. However, in the opposite case, since a large wave is not generated, the power generation capacity is greatly reduced.

On the other hand, the tide is not affected by the weather and always forms a constant movement. That is, high tides and low tides are alternately repeated, and accordingly, the tide flows in a specific direction every day. From such a point of view, an apparatus that has been installed in the sea or at the bottom of the sea and generates power by tidal current has been invented (for example, see Patent Document 2).

Japanese Patent No. 2838373 JP 2007-282466 A

Thermal power generation, which is a power generation method that has been widely used in the past, deteriorates the global environment because carbon dioxide and sulfur oxides are discarded. In contrast, tidal current power generation is an infinite energy source and does not emit carbon dioxide.

”Current tidal current power generation is usually to generate power by using a dynamo on a ship where a screw or propeller is rotated in the sea and the force moored by an anchor or the like, and is generated by the same means as wind power generation. This is because the torque of seawater caused by tidal currents is larger than that of wind power generation, so that large electric power can be obtained. However, it is extremely difficult to fix these facilities such as ships against the tidal current, so that the installation cost is high and maintenance is also difficult. Furthermore, there is a problem that it is difficult to transmit power from the sea, and the cost required is higher than that of wind power generation.

In order to solve the problems of the tidal current power generation of the prior art, the present inventor has created a caisson (usually heavy weight) fixed in the sea and generates power using the tidal current passing through and around it. did.

That is, a barge is fixed on a caisson fixed to the sea floor, and a water turbine that rotates by a tidal current is provided on the front, rear, and side thereof to generate electricity. The tidal current power generation so far has been difficult to fix, but the present invention is easy to fix and does not require a fixing anchor or the like. For example, a caisson is manufactured on land, transported to a marine destination, where it is sunk and fixed on the sea floor, and the current flowing through it is used.

Also, a turbine, generator, charger, etc. will be installed on the barge fixed on the caisson. Since the caisson is heavy, the tidal current can be controlled, and an unanticipated tidal current from the lateral direction can be induced in a predetermined direction, whereby the turbine can be effectively rotated to generate power.

The inventor considered the following problems before completing the present invention.
(1) Direction of tidal current Tidal current frequently changes from one direction to the opposite direction. It is very difficult to rotate the water wheel while always catching this change in the direction of the tidal current.For example, when a ship of a power generator is moored by a single anchor, the ship moves in the direction of the tidal current on the sea. It is difficult to stabilize. Moreover, since an anchor is consumed violently with this, it will be necessary to replace | exchange frequently. The present invention considers how to deal with the changing direction of tidal currents.

(2) Tidal range The height of the sea surface changes depending on the tidal range. It is not possible to cope with this tidality only by fixing the water wheel at the sea surface. Considering this point, we considered the installation of Darius turbines at the front, corresponding to the sea level during tidal periods.

Also, the water wheel attached to the side of the device is affected by the tides. For this reason, considering that two or three water turbines corresponding to the sea level at the time of tidal periods are provided, for example, so that each corresponds to a different sea level. Thereby, one of the water wheels can be rotated regardless of the change in the sea level.

It should be noted that a conventional power generator installed in the sea or at the bottom of the sea and using the tidal current is more efficient than a power generator using waves. However, there is a need for ingenuity to use the tidal current more effectively. Further, the maintenance and repair of the conventional power generator becomes a big problem. In other words, when the generator fails or is regularly inspected, dangerous work such as diving an operator on the sea floor is required. It is necessary to avoid such dangerous work as much as possible.

The present invention was devised in view of these points, and is a tidal current power generation device that can generate power by using the tidal current, which is always a stable energy source, more effectively, and that can be easily maintained and repaired. It is an issue to provide.

This will be described with reference to FIGS. The tidal current power generation device 100 according to claim 1 generates power using the kinetic energy of the tidal current F, and is installed on the seabed G and has a caisson body that is at least a pair of opposing side walls, and the caisson. A water turbine disposed between at least the pair of opposing side walls of the main body, the caisson main body, and rotated by a tidal current. Then, the caisson has a wide front part at the front part and a wide rear part at the rear part to increase the speed of the tidal current entering from the front part or the rear part to rotate the water wheel. It is characterized by.

The tidal current power generation device 100 according to claim 2 generates power using the kinetic energy of the tidal current, and the lower body is embedded in the ground of the seabed G along the tidal current direction, and the upper body 21 that is the upper portion thereof. Is located in the sea, and the

upper body

21, 21 is gradually narrowed along the tidal current direction about the neutral plane MM, and a gradually narrowing portion 21 a in which the distance between the two gradually decreases. A pair of

caisson bodies

20e, 20f having a parallel portion 21b, an inner surface 22 that forms a gradually widened portion 21c that gradually widens following the parallel portion 21b, and an outer surface 23 that is parallel to the entire length; A barge body 30 is disposed on the upper ends of the pair of caisson

main bodies

20e and 20f so as to straddle them, with a substantially lower half located below the sea surface W and a substantially upper half exposed from the sea surface W.

Then, on the lower surface of the barge body 30, an axial flow type water turbine 1d that is positioned in the slow narrow portion 21a and the slow wide portion 21c and rotates by a tidal current is provided. Further, a side fixed water turbine 1a that rotates by a tidal current is attached to a water turbine shaft 3a that is provided on a barge deck 31 that is an upper end of the barge body 30 in a direction orthogonal to the tidal current, and the lower portion of the impeller 2a of the water turbine 1a is connected to the sea surface W. Position below.

According to a third aspect of the present invention, the tidal current power generation device 100 is provided with the front-rear oscillating water turbine 1c rotating around the water wheel shaft 3c at the front end portion and the rear end portion of the barge body 30. The lower part of the impeller 2c of the water wheel 1c is located below the sea surface W.

The tidal current power generation device 100 according to claim 4 is the invention according to claim 2 or 3, wherein the water turbine shaft 3b provided in the direction perpendicular to the tidal current is rotated by the tidal current on the barge deck 31 which is the upper end of the barge body 30. The side surface vertically moving water turbine 1b is mounted, both ends of the water turbine shaft 3b are supported by bearing blocks 66, and the bearing blocks 66 are inserted into a substantially cylindrical support leg 8b so as to be movable up and down. The upper part of the screw shaft 65 that rotates forward and backward is engaged with 66, the lower end portion of the screw shaft 65 is engaged with the worm 67 that rotates forward and backward, and the worm 67 is engaged with the wheel 68.

The tidal current power generation device 100 according to claim 5 is the invention according to any one of claims 2 to 4, wherein a mast 41 is erected at a central portion of the barge deck 31 of the barge body 30, and an upper end portion of the mast 41 The beam 42 is supported so as to be pivotable in the horizontal direction, and a hoist 43 movable in the horizontal direction is suspended from the beam 42 to form a crane 40. The crane 40 can also transfer a lifeboat or a ship on the barge deck 31.

A tidal current power generation apparatus 100 according to a sixth aspect is the invention according to any one of the second to fifth aspects, wherein the barge body 30 includes a battery chamber 90 including a battery 91 and a current path switch 82. A cockpit 80 is provided, and the current generated in the water turbines 1a to 1d rotating in the forward and reverse directions according to one direction and the opposite direction of the tidal current is switched by the changeover switch 82, so that a positive current and a negative current are supplied to the positive and negative electrodes of the battery 91. A negative current is charged to charge, and the current from the battery 91 is switched by the changeover switch 82 and sent to the forward / reverse motor 7c that moves the water wheel shaft 3c of the forward and backward swing type water turbine 1c up and down. The water turbine 1c is moved up, down, and stopped, and the current is sent to a forward / reverse motor 7b that moves the water wheel shaft 3b of the side vertical water turbine 1b up and down. Increasing the vertical movement waterwheel 1b side movement, it is intended to move down and stop.

The tidal current power generation device 100j according to claim 7 generates power using the kinetic energy of the tidal current, and has a groove shape in which a pair of

side walls

112 and 112 are erected from the left and right ends of the bottom wall 111, and has a front end opening. Part 110a, rear end opening part 110b, and upper end opening part 110c, caisson 20j for receiving a tidal current from front end opening part 110a or rear end opening part 110b, and a wide width from the front end both ends of caisson 20j toward the front A front tide receiving portion 115 for guiding the tide into the caisson 20j, and a rear tide receiving portion that is widened backward from both ends of the rear end of the caisson 20j to guide the tide into the caisson 20j. A front door 113 that opens and closes the front end opening 110a, and a rear end of the caisson 20j. A rear door 114 that opens and closes the rear end opening 110b, a mounting base 120 that is attached to and detached from the caisson 20j through the upper end opening 110c, and that is rotated by a tidal current, and a caisson 20j. A crane 40j having a hoist 43j and a beam 42j for guiding the hoist 43j in the front-rear direction, a generator 9j provided in a maritime portion directly above the caisson 20j, and the generator 9j, And a transmission mechanism 150 that transmits the rotational force of the rotary member R.

The tidal current power generation device 100j according to claim 8 generates power using the kinetic energy of the tidal current, and has a groove shape in which a pair of

side walls

112 and 112 are erected from the left and right ends of the bottom wall 111, and has a front end opening. A caisson 20j having a portion 110a, a rear end opening 110b, and an upper end opening 110c, and receiving a tidal current from the front end opening 110a or the rear end opening 110b, and wide from the both ends of the front end of the caisson 20j toward the front A front tide receiving portion 115 that guides the tide into the caisson 20j and a rear side that widens backward from both ends of the rear end of the caisson 20j and guides the tide into the caisson 20j. A tidal current receiving portion 116, a front door 113 for opening and closing the front end opening portion 110a, and a front door 113 for opening and closing the front end portion of the caisson 20j. A rear door 114 that is assembled to the end portion so as to be movable up and down, and a rear door 114 that opens and closes the rear end opening portion 110b; and a mounting base 120 that is attached to and detached from the caisson 20j through the upper end opening portion 110c and is provided with a rotating member R that is rotated by a tidal current. , A crane 40a having a hoist 43j and a beam 42j for guiding the hoist 40j in the front-rear direction, a generator 9j provided in a maritime portion directly above the caisson 20j, and a generator 9j. And a transmission mechanism 150 for transmitting the rotational force of the rotating member R. And the said rotation member R is comprised with the water turbine 1j or the propeller 2j.

A tidal current power generation device 100j according to a ninth aspect is the invention according to the seventh or eighth aspect, wherein the rotating member R is constituted by a water turbine 1j, and the tidal current is generated in a substantially upper half or a substantially lower half of the water turbine 1j. It is set as the structure covered with the cover part 101c for shielding.

The tidal current power generation device 100 according to claim 10 has a function as a lighthouse by arranging the tidal current power generation device according to any one of claims 1 to 9 adjacent to the reef P and providing an illumination light L. It is characterized by having it.

In the tidal current power generation device 100 according to claim 1, a caisson having a caisson main body which is at least a pair of opposing side walls is installed on the seabed G, its front part is widened forward, and its rear part is rearward Since the width is widened, the speed of the tidal current entering from the front part or the rear part can be increased. Thereby, the water wheel arrange | positioned between the caisson main bodies which are a pair of side walls can be rotated effectively, and electric power generation capability can be improved.

The tidal current power generation device 100 according to claim 2 is provided with the axial flow type water turbine 1d on each of the gradual narrow portion 21a and the gradual wide portion 21c on the lower surface of the barge main body, and the side surface fixed water turbine 1a on the side surface of the barge main body. Therefore, the axial flow type water turbine 1d and the side surface fixed water turbine 1a can be rotated by the tidal current to effectively generate power.

In the tidal current power generation device 100 according to claim 3, since the front and rear swing water turbines 1c are provided at the front end portion and the rear end portion of the barge body 30, the lower portion of the impeller 2c is positioned below the sea surface W. Therefore, it is possible to effectively generate power by rotating the oscillating water turbine 1c using the tidal current.

In the tidal current power generation apparatus 100 according to the fourth aspect, since the side vertical motion turbine 1b is provided on the side surface of the barge body, the side vertical motion turbine 1b can be rotated by the tidal current to effectively generate power. .

In the tidal current power generation device 100 according to the fifth aspect, since the mast 41 and the beam 42 are provided on the barge body 30 to form the crane 40, all the necessary components can be suspended and conveyed using the crane 40. .

In the tidal current power generation device 100 according to the sixth aspect, since the barge body 30 is provided with the battery chamber 90 including the battery 91 and the cockpit 80 including the current changeover switch 82, The dynamic water turbine 1b can be moved up and down. As a result, the oscillating water turbine 1c and the side-surface vertically moving water turbine 1b are moved up and down in accordance with the sea surface W, so that the tide can be constantly received. Therefore, more effective power generation can be performed.

The tidal current power generation device 100j according to claim 7 is a groove shape in which a pair of side walls 112 are erected from both left and right ends of the bottom wall 111, and has a front end opening 110a, a rear end opening 110b, and an upper end opening 110c. A caisson 20j that receives a tidal current from the front end opening 110a or the rear end opening 110b, and a front tidal current receiving portion 115 that is widened forward from both ends of the front end of the caisson 20j and guides the tidal current into the caisson 20j. The rear end of the caisson 20j is widened from both ends of the rear end of the caisson 20j, and is assembled to the rear end of the caisson 20j so as to be movable up and down. A front door 113 that opens and closes the opening 110a, a rear door 114 that opens and closes the rear end opening 110b, and a rear door 114 that opens and closes the rear end of the caisson 20j. 20j is installed on the mounting base 120 provided with a rotating member R that is attached to and detached from the upper end opening 110c and rotated by a tidal current, and the caisson 20j. The hoist 43j and the hoist 43j are guided in the front-rear direction to the sea part. The crane 40j having the beam 42j to be operated, the generator 9j provided in the sea part of the caisson 20j, and the transmission mechanism 150 for transmitting the rotational force of the rotating member R to the generator 9j.

Thus, the tidal current is received from the front end opening 110a or the rear end opening 110b in the caisson 20j, the rotating member R is rotated by the tidal current, and the rotational force is transmitted to the offshore generator 9j by the transmission mechanism 150 to generate power. be able to.

At this time, since the front tide receiving portion 115 and the rear tide receiving portion 116 are provided, the tide can be effectively guided in the caisson 20j. Thereby, the tidal current can be further effectively utilized to rotate the rotating member R more efficiently, and the power generation capacity can be increased.

Further, since the caisson 20j has the upper end opening 110c, the mounting base 120 can be easily attached to and detached from the caisson 20j through the upper end opening 110c. Therefore, for example, when repairing and replacing the rotating member R, the mounting base 120 can be lifted using the crane 40j, and a predetermined operation can be performed on the sea (for example, on the barge S). Therefore, maintenance can be easily performed.

The caisson 20j has a groove shape composed of a bottom wall 111 and a pair of

side walls

112, 112, and is structurally stable. Therefore, it can be easily installed on the seabed G in a stable posture. Moreover, since the structure is simple, it is difficult for parts to fall off, and therefore there is no risk of damaging the screw or rudder of other ships.

The tidal current power generation device 100j according to claim 8 exhibits the same effect as that of the invention according to claim 7. Further, since the rotating member R is constituted by the water turbine 1j or the propeller 2j, it can be effectively rotated by receiving the tidal current and the power generation effect can be further enhanced.

The tidal current power generation device 100j according to claim 9 exhibits the same effects as the inventions according to

claims

7 and 8. Further, since the rotating member R is constituted by the water turbine 1j and the substantially upper half or the substantially lower half of the water turbine 1j is covered with the cover portion 101c for blocking the tidal current, the water turbine 1j can be effectively rotated. Can do. By the way, if the cover 101c is not provided, the entire turbine wheel 1j (upper half and lower half) will receive a tidal current and cannot be rotated. Such an adverse effect can be eliminated by providing the cover 101c.

A tidal

power generation device

100, 100j according to claim 10 is a lighthouse by disposing the tidal

power generation device

100, 100j according to any one of claims 1 to 9 adjacent to the reef P and providing an illuminating lamp L. Therefore, it is possible to prevent marine accidents that are likely to occur on the reef P.

1 is a side view showing a first embodiment of a tidal current power generation device according to the present invention. It is a top view of the tidal current power generation device shown in FIG. It is a front view of the tidal current power generator shown in FIG. It is a side view of the tidal current power generator concerning the present invention (modification of the side view of Drawing 1). It is a top view of a tidal current power generation device concerning the present invention (mechanical structure is shown). It is a top view of the tidal current power generation device concerning the present invention (electric system is shown). It is a top view of the tidal current power generation device concerning the present invention (electric system is shown). It is a block diagram which shows the worm | warm and wheel in the tidal current electric power generating apparatus which concerns on this invention. In the tidal power generator according to the present invention, it is a partial cross-sectional front view showing a vertical movement structure of a side vertical movement type water turbine. FIG. 10 is a schematic plan view of FIG. 9. FIG. 10 is a schematic side view of FIG. 9. The water turbine in the tidal current electric power generating apparatus which concerns on this invention is shown, (A) is a side view, (B) is a front view. It is a principal part front view which shows the electric power generation system of the side fixed type water turbine of the tidal current electric power generating apparatus which concerns on this invention. It is a principal part front view which shows the electric power generation system of the side surface vertical motion type | mold water turbine of the tidal current electric power generating apparatus which concerns on this invention. It is a principal part front view which shows the electric power generation system etc. of the front-back rocking | swiveling type water turbine of the tidal current power generation device which concerns on this invention. It is a partial cross section schematic side view which shows 2nd embodiment of the tidal current electric power generating apparatus 100 which concerns on this invention. It is XX sectional drawing of FIG. It is a front view of the tidal current power generator shown in FIG. FIG. 17 is a partial plan view of the tidal current power generation device shown in FIG. 16. It is a partial front view of the tidal current power generator shown in FIG. It is a partial side view of the tidal current power generator shown in FIG. It is a partial top view which shows the other aspect in the tidal current electric power generating apparatus which concerns on this invention. FIG. 17 is a front view showing a state in which the mounting base is lifted and moved backward in the tidal current power generation device shown in FIG. 16. It is a side view of FIG. It is a schematic front view which shows the state which uses the tidal power generation apparatus of this invention as a lighthouse.

A first embodiment of a tidal current power generation apparatus 100 according to the present invention will be described with reference to FIGS. The tidal current power generation apparatus 100 of the present invention is provided at a place off the ship's route. The direction of the tidal current is defined by the rising tide 10 flowing from the front to the back and the ebb tide 12 flowing from the back to the front. In this tidal current power generation apparatus 100, a pair of caisson

main bodies

20e and 20f are arranged in parallel along the tidal current direction, and the lower half of the caisson

main bodies

20e and 20f is embedded in the ground of the seabed J (see FIGS. 1 and 3).

The caisson upper bodies 21 of the pair of

caisson bodies

20e, 20f are provided with a pair of inner surfaces 22, and the distance between them gradually decreases along the tidal current direction with the neutral plane MM interposed therebetween. A narrow portion 21a, a parallel portion 21b following the narrow portion 21a, and a gradual wide portion 21c that widens again following the parallel portion 21b are formed (see FIG. 2). The caisson upper body 21 has outer surfaces 23 that are parallel to each other over its entire length.

Also, the barge body 30 is provided in a state of being arranged across the caisson upper body 21, and both outer surfaces along the tidal direction are flush with both outer surfaces 23 of the caisson upper body 21.

Further, an axial-flow water turbine 1d is suspended from the lower surface of the front portion and the rear portion of the barge body 30 in each of the narrow portion 21a and the wide portion 21c of the caisson upper body 21 (see FIGS. 1 to 4). Then, on the upper side of the barge deck 31 which is the upper end of the barge body 30, a water wheel shaft 3a and a water wheel shaft 3b are provided sideways (in a direction orthogonal to the tidal current), and the side surface fixed type water wheel 1a that rotates by the tidal current is attached to the water wheel shaft 3a. A side fixed type water turbine 1b that is also rotated by a tidal current is attached to the water turbine shaft 3b. And the lower part of both

impellers

2a and 2b is located under the sea surface W of the left and right outer surfaces of the barge body 30.

Further, support legs 8c are provided along the front and rear sides of the barge body 30, and the swing arm 71 is swingably attached to the support legs 8c via the base shaft 72 (see FIG. 5). The water turbine shaft 3c is rotatably attached to the tip of the swing arm 71 along the lateral direction, and the front and rear swing water turbine 1c is rotatably attached to the water wheel shaft 3c. The lower part of the root wheel 2c of the water wheel 1c is disposed below the sea surface W in front of and behind the barge body 30.

The horizontal shaft 3b of the water turbine 1b is supported by a bearing block 66 provided in the support leg 8b so as to be movable up and down, and the upper part of the screw shaft 65 rotating forward and reverse is screwed into a screw hole provided on the lower surface side of the bearing block 66. (See FIGS. 9 to 11). The lower part of the screw shaft 65 is engaged with a worm 67 that rotates forward and backward, and the worm 67 is engaged with a wheel 68. Reference numeral 69 denotes a thrust bearing that prevents the screw shaft 65 from moving up and down.

Further, a bevel gear 75 is rotatably attached to the base shaft 72, and an endless chain 78 is installed between the chain wheel 76 and a chain wheel 77 fixed to the water wheel 1c (see FIG. 15). A bevel gear 81 fixed to a bevel gear shaft 79 provided through the deck 31 is meshed with the bevel gear 75. The lower end of the bevel gear shaft 79 is connected to the generator 9c. A bevel gear 85 is provided at the base end of the swing arm 71, and the bevel gear 85 is meshed with a bevel gear 87 of a rotary shaft 86 that is rotatably provided through the deck 31. The lower end of the rotation shaft 86 is connected to the forward / reverse motor 7c.

A mast 41 is installed in the central portion of the barge body 30 through the barge deck 31, and a beam 42 is rotatably attached to the upper end portion of the mast 41, and moves horizontally along the beam 42. A possible hoist 43 is suspended from the beam 42 to form the crane 40 (see FIG. 4). The crane 41 can be used for all purposes such as maintenance of the water turbines 1a to 1d and connection of electric wires connecting the batteries to the ship. The crane 40 has a tough structure that can withstand typhoons and the like.

The barge body 30 is provided with a battery chamber 90 and a cockpit 80 (see FIGS. 6 and 7). These are configured so that the electric current paths 4a to 4d generated in the generators 9a to 9d of the water turbines 1a to 1d that rotate forward and reverse in accordance with the rising tide and the ebb tide are switched by the current path switching switch 82 in the cockpit 80. Is done. The current path changeover switch 82 is installed in the middle of the two circuits, and the two circuits are normally connected (forward connection), reversely connected, and disconnected by an electrical signal from the cockpit 80.

The rotation of each of the water wheel shafts 1a to 1d is transmitted to the generators 9a to 9d, respectively, and the output of each of the generators 9a to 9d is transmitted to the input side of the battery 91 via the current path switch 82. Thereby, a positive current and a negative current are always charged to the positive electrode and the negative electrode of the battery 91 via the current path 4e.

Further, the positive current and the negative current from the battery 91 are sent to the cockpit 80 through the current path 4f and switched there to rotate the forward / reverse motor 7c that swings the water wheel 1c of the water wheel shaft 3c up and down. As a result, the water turbine 1c is moved up and down and further stopped. In addition, this electric current is comprised so that it may also send to the forward / reverse rotation motor 7b which raises / lowers the water wheel shaft 3b of the water wheel 1b (refer FIG. 7).

The tidal current power generation device 100 can be provided with a clutch device and a clutch changeover switch. The clutch changeover switch 6 is provided at a location where the power is mechanically connected / disconnected in conjunction with the computer, and the clutch device is operated by an electrical signal from the cockpit 80 to transmit and shut off the power.

The vertical movement of the side-surface vertically moving water turbine 1b can be performed by a so-called speed reduction mechanism including a drive-side worm 67 and a passive-side wheel 68 (see FIGS. 9 to 11). That is, the worm 67 is rotated by the power from the motor 7b, thereby rotating the wheel 68. Incidentally, the worm 67 cannot be rotated by the wheel 68. This reduction mechanism can also be applied to other water turbines.

The side fixed water turbine 1a includes a bevel gear 51 fixed to the water wheel shaft 3c, which is rotatably provided through the barge deck 31, and a bevel gear 54 of a vertical rotation shaft 53 connected to the generator 9a. Engage (see FIG. 13). Thereby, the rotational force of the side fixed type water turbine 1a is transmitted to the generator 9a to generate electric power.

The side-side vertically movable water turbine 1b rotates the rotating shaft 64 via the bevel gear 52 by the bevel gear 51 fixed to the water wheel shaft 3b, and rotates the rotation via the spline 65, the screw shaft 65, and the telescopic vertical rotating shaft. To the generator to generate the generator (see FIG. 14).

Support legs 8a to 8c are provided on the barge deck 31, thereby supporting the water wheel shafts 3a to 3c of the impellers 2a to 2c of the side fixed type water wheel 1a (see FIG. 5). Among them, a base shaft 72 is fixed to a support leg 8c related to the front and rear swing water turbine 1c, and a swing arm 71 is rotatably supported on the base shaft 72 (see FIG. 15). A water wheel shaft 3c is fixed to the swing arm 71, and a water wheel 1c is rotatably provided on the water wheel shaft 3c.

Next, a tidal current power generation apparatus 100j according to a second embodiment of the present invention is shown in FIGS. The device 100j generates power using the kinetic energy of the tidal current F, and includes a caisson 20j, a front tidal current receiving portion 115, a rear tidal current receiving portion 116, a front door 113, a rear door 114, a mounting base 120, and a crane 40j. The generator 9j and the transmission mechanism 150 are provided.

Note that the rotating member R of the present embodiment is constituted by a water wheel 1j, and the water wheel 1j is fixed to a water wheel shaft 3j that is rotatably supported on the mounting base 120. A bevel gear B is attached to the end of the water wheel shaft 3j.

The caisson 20j has a groove shape with a front shape in which a pair of side walls 112 are erected from both left and right end portions of the bottom wall 111, and has a front end opening portion 110a, a rear end opening portion 110b, and an upper end opening portion 110c. Thus, a tidal current is received from the front end opening 110a or the rear end opening 110b. The material for forming the caisson body j is not limited, but it is preferably formed of a material having a large specific gravity such as concrete in order to be stably placed on the seabed G. The size of the caisson 20j is not limited. For example, a caisson 20j having a length of about 100 m, a width of 20 m, and a height of about 15 m is suitable.

The front-side tide receiving portion 115 is formed in a wide shape that gradually widens forward from both ends of the front end of the caisson 20j, and effectively guides the tide into the caisson 20j through the front opening. The rear tidal current receiving portion 116 is provided in a wide shape that gradually widens rearward from both ends of the rear end of the caisson 20j, and effectively guides the tidal current into the caisson 20j through the rear opening.

By the action of the front tide receiving part 115 and the rear tide receiving part 116, the speed of the tide inside the caisson 20j can be made higher than that outside the caisson 20j, and the turbine 1j can be rotated more efficiently. Can do. The material for forming the front tide receiving part 115 and the rear tide receiving part 116 is not limited, but it is preferable to form the concrete integrally with the caisson 20j.

The front door 113 is assembled to the front end portion of the caisson 20j so as to be movable up and down, and opens and closes the front end opening 110a of the caisson 20j. The rear door 114 is assembled to the rear end portion of the caisson 20j so as to be movable up and down, and opens and closes the rear end opening 110b of the caisson 20j. The front door 113 and the rear door 114 can be lifted and lowered by using the hoist 43j using the crane 40j. The hoist 43j can freely move in the front-rear direction along the beam 42j.

Since the front door 113 and the rear door 114 are required to withstand the tidal current F, it is preferable to form the front door 113 and the rear door 114 from a material having rigidity and durability such as metal. The front door 113 and the rear door 114 are lowered when the mounting base 120 described later is attached to or detached from the caisson 20j to close the front end opening 110a and the rear end opening 110b. The attachment base 120 can be easily attached and detached.

The mounting base 120 includes a rotating member R (water turbine 1j) that is rotated by a tidal current, and is attached to and detached from the caisson 20j through its upper end opening 110c. The substantially upper half of the water turbine 1j is covered with a cover 101c for blocking the tidal current F, so that the tidal current acts only on the upper half of the water turbine 1j (see FIG. 21). In addition, this cover part 101c can also cover the substantially lower half part of the water turbine 1j.

The attachment base 120 can be attached and detached by using a crane 40j erected from the caisson 20j and through the hoist 43j. The number of water turbines 1j is not limited, and a plurality of water turbines 1j may be provided depending on the length of the mounting base 120. When a plurality of water turbines 1j are provided, a corresponding number of generators 9j can be provided. Further, since the direction of the tide F is periodically changed due to tides and the like, the water turbine 1j freely rotates in both the clockwise direction and the counterclockwise direction according to the flow.

The transmission mechanism 150 transmits the rotational force of the rotating member R to the generator 9j provided in the sea portion above the sea surface W immediately above the caisson 20j, and a vertical rotating shaft 151 having bevel gears B attached to both upper and lower ends. Is provided. The bevel gear B provided at the upper end of the vertical rotating shaft 151 is meshed with the bevel gear B provided at the tip of the rotating shaft 141 protruding from the generator 9j, and the rotation of the vertical rotating shaft 151 is transmitted to the rotating shaft 141. Electric power is generated by the generator 9j by the rotational force.

In the present embodiment, the mounting table 31j is provided on the sea above the caisson 20j, and the generator 9j is arranged thereon. By attaching the speed increaser 142 to the generator 9j, the rotational speed of the vertical rotating shaft 151 can be increased, and the power generation capacity of the generator can be further increased. Further, the rotating shaft 141 of the generator 9j and the vertical rotating shaft 151 of the transmission mechanism 150 are detachably connected via a coupling C. Further, a charger 91j for storing electricity generated by the generator 9j is provided adjacent to the generator 9j.

When the front and

rear doors

113 and 114 are lowered and closed, and the upper part of the caisson 20j is projected above the sea surface W, the drainage equipment 170 communicates the interior 10a of the caisson 20j to the outside. The drainage facility 170 includes a drainage pipe 171, and a lower end portion thereof is disposed in communication with the caisson 20 j and an upper end portion thereof is disposed on the sea surface W. Further, the drainage equipment 170 includes a drainage pump 172, and the seawater inside the caisson 20j is discharged through the drainage pipe 171 by its power.

Further, the tidal current power generation device 100j of the present embodiment is provided with the engaging convex portion 120a at the left and right end portions of the mounting base 120, and the engaging concave portion 110d is formed in the corresponding portion of the caisson 20j. By engaging the portion 120a with the engaging recess 110d, the mounting base 120 is slidable in the vertical direction on the caisson 20j so that it can be attached and detached in a stable posture.

The tidal current power generation apparatus 100j according to the present embodiment can be installed and operated as follows, for example. First, on the ground, an integral body of the caisson 20j, the front tide receiving part 115 and the rear tide receiving part 116 is formed of concrete or the like. A front door 113 and a rear door 114, which are separately formed, are attached, and a mounting base 120 to which a rotating member R (water turbine 1j) is further attached is attached to the caisson 20j, and a transmission mechanism 150 is attached to the tidal current power generation device 100j. Constitute.

Next, the tidal current power generation device 100j configured in this manner is loaded on the barge S and transported over the sea, and is submerged from the barge S into the sea using a large elevator or the like at the destination. At this time, the tidal current power generation device 100j is lowered by its own weight and installed on the seabed G. Note that the direction of the tidal power generation device 100j on the seabed 14j can be set by operating a large elevator so that the tidal current F smoothly enters the caisson 20j. Prior to power generation, the front door 113 and the rear door 114 are pulled up and opened.

In addition, by installing a strong net at the front end and rear end of the caisson 20j, or at the front end of the front tidal current receiving portion 115 and the rear end of the rear tidal current receiving portion 116, floating dust, timber, etc. are caisson. Intrusion into 20j can be prevented from colliding with water turbine 1j. Moreover, it is possible to prevent parts such as the damaged water turbine 1j from flowing out.

Thus, the tidal current F flows into the caisson 20j of the tidal current power generation device 100j placed on the seabed J, and the turbine 1j is rotated by the energy. At this time, a larger amount of tidal current can be sent to the inside of the caisson 20j than the case where it is not provided by the function of the front tidal current receiving portion 115. Thereby, the tidal current in the caisson 20j can be made stronger, and the water turbine 1j can be rotated more effectively.

The rotational force of the water turbine 1j is transmitted to the generator 9j through the transmission mechanism 150, and electricity is generated by the generator 9j. The generated electricity is stored in the charger 91j. The charger 91j in which electricity is stored is regularly transported to the ground and used. Instead of providing the charger 91j or together with it, it is also possible to connect an electric wire to the generator 9j and send electricity directly to the ground.

In addition, the direction of the tide F changes periodically due to tides and the like, and the caisson 20j can cope with this. That is, for example, when the tidal current F is from left to right, it is taken from the front end opening 110a of the caisson 20j toward the rear end opening 110b, and vice versa, from the right end to the left, from the rear end opening 110b. It takes in to the front-end opening part 110a. Thereby, it is possible to generate electricity by rotating the water turbine 1j almost continuously.

When repairing or replacing the water turbine 1j of the tidal current power generator 100j, the front door 113 is lowered by the crane 40j to close the front end opening 110a, and the rear door 114 is lowered by the crane 40j to close the rear end opening 110b. As a result, the generation of the tidal current F inside the caisson 20j is blocked (or weakened). In this state, the mounting base 120 is pulled up to the barge S or work table (not shown) using the crane 40j, and parts such as the water turbine 1j are repaired or replaced on the barge S or the work table (FIG. 8). And FIG. 9). When pulling up the mounting base 120, the generator 9j located immediately above it is moved by moving the mounting table 31j to avoid interference with the mounting base 120 (see FIG. 8).

As described above, since repair and replacement of parts are performed at sea by lifting the mounting base 120, the repair and replacement work can be easily performed. Therefore, maintenance of the tidal current power generation apparatus 100j is extremely easy.

After the repair of the parts is completed, the water wheel 1j and the like are attached to the attachment base 120, and then the attachment base 120 is submerged in the sea using the crane 40j and attached to the caisson 20j again. At this time, the mounting base 120 is lowered in a state where the engaging convex portion 120a is inserted into the engaging concave portion 110d of the caisson 20j. Thereafter, the front door 113 and the rear door 114 are lifted by the crane 40j to open the front end opening 110a and the rear end opening 110b of the caisson 20j, and the tidal current F is received by the caisson 20j. Thereby, the water turbine 1j is rotated again to generate power.

It should be noted that another rotating member R such as a propeller 2j can be used in place of the water wheel 1j. When the propeller 2j is used, the propeller shaft 3j is rotatably attached to the mounting base 120 in the front-rear direction, and one or more propellers are fixed to the propeller shaft 3j (see FIG. 22). Further, the propeller shaft 3j is meshed with the first horizontal rotating shaft 102b to which the plurality of bevel gears B are fixed, and the first horizontal rotating shaft 102b is meshed with the second horizontal rotating shaft 102c to which the bevel gear B is fixed at both ends. Then, the second horizontal rotation shaft 102 c is engaged with the vertical rotation shaft 151 of the transmission mechanism 150. Thereby, the propeller 2j is rotated by the tidal current F, and the rotational force is transmitted from the propeller shaft 3j to the generator 9j via the first horizontal rotating shaft 102b, the second horizontal rotating shaft 102c and the transmission mechanism 150 (vertical rotating shaft 151). Tell the power generation.

The tidal current power generation device 100j according to the first embodiment described above exhibits at least the following operational effects.
(1) There are tidal current power generation devices that generate electricity under the sea surface, but unlike that, since almost half of the water turbine is immersed in seawater, it can be rotated efficiently.
(2) Since a barge is provided using a caisson and equipment such as a generator is provided in or on the barge, maintenance and replacement of the equipment is easy.

(3) Tidal currents flow in different directions at high tide and ebb tide, but the power generation efficiency is high because either of them can be used.
(4) Since a crane that can withstand typhoons is provided, it is possible to easily install and replace equipment.

(5) Since only the lower part of one caisson is buried in the ground of the seabed G, there is little fishing damage.
(6) Oxygen can be generated using a tidal current power generation device and supplied to the sea to be provided to fish and the like. Thereby, nutrients can be circulated in the sea and provided to fish and the like.

(7) By storing the electric power generated by the tidal current power generator in the battery, it is possible to eliminate the need for a transmission line for sending to the land. The charged battery can be transported to land by ship.
(8) By using various regulators as necessary, for example, any adjustment such as adjustment of the rotation speed of the water turbine and adjustment of voltage and current becomes possible.

(9) Manufacturing costs can be reduced by using existing generators and batteries.
(10) The rotation efficiency can be increased by starting the rotation of the water turbine using the auxiliary power mechanism.
In other words, conventional power generation using tidal currents, regardless of screw type or blade type, operates in the sea, and it has been difficult to rotate with almost half of them submerged in the sea. However, the water turbine can be smoothly rotated by starting the water turbine using the auxiliary power mechanism and then using, for example, a “flying wheel”.

(11) The tide goes in the opposite direction almost every 6 hours. Therefore, the tidal current can always be changed to a rotational motion by switching the gears according to the time. In addition, more water turbines can be rotated by attaching Darius-type water turbines to the front and rear sides of the tidal current power generation device and attaching a rotary water turbine to the lateral surface.
(12) Since a water turbine that moves up and down is provided, it can be installed in a sea with a large tidal range.

(13) Since a tunnel-like water channel can be formed by arranging a plurality of caissons in series, a stable tidal current can be ensured and power generation efficiency can be increased.
(14) Existing turbine generators, batteries, regulators, etc. can be used. Therefore, the installation cost can be suppressed.

(15) Seawater is electrolyzed on the barge deck to generate hydrogen, which can be recovered and utilized.
(16) Since the caisson is used, it is possible to easily form a water channel and adjust the tide.

(17) The strength of the tidal current can be adjusted depending on the shape of the caisson (for example, the intensity can be doubled).
(18) A barge body is provided on the caisson, and any member such as a generator or a battery can be installed therein. In addition, a worker's living space can be formed. Thereby, a worker can inspect and maintain members such as a water wheel and a generator frequently. Therefore, for example, when an emergency typhoon is approaching, it is possible to quickly respond using a crane or the like installed on the barge deck 31.

(19) The tidal current is adjusted with a caisson, and a water wheel (for example, a Darius type water wheel impeller) is installed before and after the caisson. . This Darrieus-type water wheel exists in the sea regardless of the tide, and rotates in the forward direction at full tide and in the reverse direction at dry tide, every 6 hours depending on the age. The thermostat can be switched.

(20) Electricity can be generated using the tidal current for approximately 24 hours a day. Although the water turbine may stop due to the slow current, the water turbine can be rotated for about 20 hours per day even if it is about 4 hours. This is superior in power generation efficiency compared to, for example, a solar power generation apparatus that uses sunlight for about 10 to 12 hours per day.
(21) A generator that generates power at a low speed may be required. In that case, the generator can be freely selected from existing generators.

(22) For example, a hydroelectric power generation apparatus using a dam has a limited installation location, but an ocean power generation apparatus has an infinite number of installation locations. For example, even in Japan, there are many places with a tidal current of 3.5 knots or more suitable for tidal power generation. Therefore, effective power generation can be performed.
(23) Since the raw material necessary for power generation is an infinite current, the cost of power generation can be kept extremely low.

(24) If permission to use private water is required, it is possible to select offshore shipyards.

The tidal current power generation device 100j according to the second embodiment exhibits the following operational effects.
(25) Since the front tidal current receiving portion 115 and the rear tidal current receiving portion 116 are provided, the tidal current can be effectively sent into the caisson 20j, and the water turbine 1j can be efficiently rotated. Thereby, power generation efficiency can be improved.

(26) When parts such as the water turbine 1j are to be repaired and replaced, the mounting base 120 to which they are attached can be lifted by the crane 40j at sea, or the front door 113 and the rear door 114 can be opened and emptied. The caisson 20j that has become a dock can be used for repair or replacement. It depends on the degree of failure. Accordingly, maintenance of the tidal current power generation device 100j is easy.

(27) When attaching / detaching the mounting base 120 to / from the caisson 20j, the front door 113 and the rear door 114 are attached to the front end opening 110a and the rear end opening 110b to block (or weaken) the tide inside the caisson 20j. Therefore, the attachment base 120 can be easily attached and detached. Therefore, the maintenance of the tidal current power generation apparatus 100j can be further facilitated.

(28) Since the caisson 20j has a front groove shape constituted by the bottom wall 111 and the pair of side walls 112, it is structurally stable. Therefore, it can be easily installed on the seabed G in a stable posture.

(29) Since the tidal current power generation device 100j is assembled almost on land, it is transported to the sea, and is sunk by its own weight on the sea floor G using a large elevator, so that assembly work on the sea floor G can be avoided. . Therefore, the assembly and installation work is easy, and the influence of the seabed G on fish reefs and algae can be minimized. Moreover, since the structure is simple, it is difficult for parts to fall off, and therefore there is no risk of damaging the screw or rudder of other ships.

(30) Electricity generated by the generator 9j can be stored in the charger 91j, and the charger 91j can be transported and used on the ground, so that installation of a transmission line becomes unnecessary. Therefore, the equipment related to the tidal current power generation apparatus 100 can be simplified, which is economical.

(31) Since the mounting base 120, the front door 113, and the rear door 114 can be attached to and detached from the caisson 20j only by the crane 40j, the equipment required for attaching and detaching them can be simplified. Therefore, the structure of the tidal current power generation device 100j can be simplified.

In addition, the tidal current

power generation devices

100 and 100j according to the first and second embodiments can be disposed adjacent to the reef P, and an illumination lamp L can be provided (see FIG. 25). Thereby, it is possible to have a function as a lighthouse and to prevent marine accidents that have occurred frequently on the reef P until now.

(1) Coexist with fishermen. For example, it is possible to create a culture base on the barge deck 31 and to cultivate fish in cooperation with fishermen.
(2) Collaborate with wind power generation. That is, it is possible to install wind turbines on the barge deck 31 and perform wind power generation at sea.
(3) It is possible to make a large base capable of performing large-scale power generation by installing a large number of the tidal current power generation devices not only at one unit but also at any location.

DESCRIPTION OF SYMBOLS 100 Tidal power generation apparatus 100j Tidal power generation apparatus 1 Water wheel 1a Side surface fixed type water wheel 1b Side surface vertical movement type water wheel 1c Forward / backward swing type water wheel 1d Axial flow type water wheel 1j Water wheel (rotating member)
2a to 2c Impeller 2j Propeller 3a to 3c Water wheel shaft 3j Water wheel shaft 4a to 4c Current path 6 Clutch changeover switch 7b Forward / reverse rotation motor 8a to 8c Support leg 9a to 9d Generator 9j Generator 10 Raising tide 11 Front 12 Tidal 13 After 20

Caisson

20e, 20f Caisson main body 20j Caisson 21 Caisson upper body 21a Gradation narrow part 21b Parallel part 21c Gradation wide part 22 Inner surface 23 Outer surface 30 Barge body 31 Deck 31j Mounting table 40 Crane 40j Crane 41 Mast 42 Beam 42j Beam 43 Hoist 43 51 Bevel Gear 52 Bevel Gear 53 Vertical Rotation Shaft 65 Screw Shaft 66 Bearing Block 67 Worm 68 Wheel 69 Thrust Bearing 71 Swing Arm 72 Base Shaft 75

Bevel Gear

76, 77 Chain Wheel 78 Endless Chain 79 Bevel gear 80 Cockpit 81 Bevel gear 82 Current path switch 85 Bevel gear 86 Rotating shaft 87 Bevel gear 90 Battery chamber 91 Charger 91j Charger 101c Cover part 102 Propeller (rotating member)
102a Propeller shaft 102b First horizontal rotation shaft 102c Second horizontal rotation shaft 110a Front end opening portion 110b Rear end opening portion 110c Upper end opening portion 110d Engaging recess 111 Bottom wall 112 Side wall 113 Front door 114 Rear door 115 Front tide receiving portion 116 Rear Side tide receiving part 120 Mounting base 120a Engaging convex part 141 Rotating shaft 142 Speed increaser 150 Transmission mechanism 151 Vertical rotating shaft 170 Drainage equipment 171 Drainage pipe 172 Drainage pump B Bevel gear C Coupling F Tidal current G Submarine L Illuminating light P Reef R Rotating member S Barge W Sea surface MM Neutral surface

Claims

A tidal current power generation device that generates power using tidal current kinetic energy,
A caisson installed on the sea floor (G) and having a caisson body that is at least a pair of opposing side walls;
A water turbine disposed between caisson bodies that are at least the pair of opposing side walls of the caisson, and rotated by a tidal current,
The caisson has a wide front part at the front and a wide rear part at the rear, and the water turbine is rotated by increasing the speed of the tidal current entering from the front part or the rear part. Tidal current power generator.
A tidal current generator that uses the kinetic energy of tidal currents, and the lower part is buried in the ground of the sea floor (G) along the direction of the tidal current, and the upper body part (21) that is the upper part is located in the sea The upper body portion (21), with its neutral plane (MM) as the center, along the direction of the tidal current, a gradually narrowing portion where the distance between them gradually narrows, and a parallel portion that follows it A pair of caisson bodies (20e, 20f) having an inner surface (22) that forms a gradually widened portion that gradually widens following the parallel portion, and an outer surface (23) that is parallel to the entire length; ,
A barge body that is arranged at the upper ends of the pair of caisson main bodies (20e, 20f) so as to straddle them, with the substantially lower half located under the sea surface (W) and the substantially upper half exposed from the sea surface (W). (30),
Provided on the lower surface of the barge body (30) is an axial-flow water turbine (1d) that is positioned in the gradually narrowed portion and the gradually widened portion and that is rotated by a tidal current,
A water turbine shaft (3a) provided in a direction perpendicular to the tidal current on the barge deck (31), which is the upper end of the barge body (30), receives the side fixed water turbine (1a) that rotates by the tidal current, and the water turbine (1a) Tidal power generator with the lower part of the impeller (2a) located below the sea level (W).
The front and rear ends of the barge body (30) are provided with a forward and backward swinging water wheel (1c) that rotates about the water wheel shaft (3c), and the lower part of the impeller (2c) of the water wheel (1c) is provided. The tidal current power generation device according to claim 2, which is located under the sea surface (W).
A water wheel shaft (3b) provided in a direction perpendicular to the tidal current on the barge deck (31), which is the upper end of the barge body (30), receives a side vertical moving water turbine (1b) that is rotated by the tidal current. 3b) is supported at both ends by a bearing block (66), and the bearing block (66) is inserted into a substantially cylindrical support leg (8b) and supported so as to be movable up and down, and forward and backward with respect to the bearing block (66). The upper part of the screw shaft (65) to be engaged is screwed, the lower end portion of the screw shaft (65) is engaged with the worm (67) rotating forward and backward, and the worm (67) is engaged with the wheel (68). The tidal current power generation device according to 2 or 3.
A mast (41) is erected at the center of the barge deck (31) of the barge body (30), and the beam (42) is supported horizontally at the upper end of the mast (41), The tidal current power generator according to any one of claims 2 to 4, wherein a crane (40) is formed by suspending a hoist (43) movable in the horizontal direction on the beam.
The barge body (30) is provided with a battery compartment (90) provided with a battery (91) and a cockpit (80) provided with a current path changeover switch (82), depending on one direction and the opposite direction of the tidal current. The current generated in the forward and reverse rotating turbines (1a to 1d) is switched by the changeover switch (82) to charge the positive and negative electrodes of the battery (91) by charging them with positive and negative currents. The current from (91) is switched by the changeover switch (82) and sent to the forward / reverse motor (7c) that moves the water wheel shaft (3c) of the forward and backward swing type water turbine (1c) up and down. The water turbine is moved up, down, and stopped, and the current is sent to a forward / reverse motor (7b) that moves the water wheel shaft (3b) of the side vertical motion water turbine (1b) up and down. Water wheel (1b) Noboru movement, tidal power generator according to any one of claims 2 to 5 to move downward and stop.
A tidal current power generation device that generates power using the kinetic energy of a tidal current (F),
It has a groove shape in which a pair of side walls (112, 112) is erected from both left and right ends of the bottom wall (111), and has a front end opening (110a), a rear end opening (110b), and an upper end opening (110c). A caisson (20j) for receiving a tidal current from the front end opening or the rear end opening;
A front tide receiving portion (115) provided in a wide shape toward the front from both ends of the front end of the caisson and guiding the tide into the caisson;
A rear tide receiving portion (116) provided in a wide shape toward the rear from both ends of the rear end of the caisson and guiding the tide into the caisson;
A front door (113) that is assembled to the front end of the caisson so as to be movable up and down, and opens and closes the front end opening;
A rear door (114) that is assembled to the rear end of the caisson so as to be movable up and down, and that opens and closes the rear end opening;
An attachment base (120) provided with a rotating member (R) which is attached to and detached from the caisson through the upper end opening and rotates by a tidal current;
A crane (40j) which is erected from the caisson and has a hoist (43j) and a beam (42j) for guiding the hoist in the front-rear direction at the sea part;
A generator (9j) installed in the sea part directly above the caisson;
A tidal current power generation apparatus comprising: a transmission mechanism (150) configured to transmit a rotational force of the rotating member to the generator.
A tidal current power generation device that generates power using the kinetic energy of a tidal current (F),
It has a groove shape in which a pair of side walls (112, 112) is erected from both left and right ends of the bottom wall (111), and has a front end opening (110a), a rear end opening (110b), and an upper end opening (110c). A caisson (20j) for receiving a tidal current from the front end opening or the rear end opening;
A front tide receiving portion (115) provided in a wide shape toward the front from both ends of the front end of the caisson and guiding the tide into the caisson;
A rear tide receiving portion (116) provided in a wide shape toward the rear from both ends of the rear end of the caisson and guiding the tide into the caisson;
A front door (113) that is assembled to the front end of the caisson so as to be movable up and down, and opens and closes the front end opening;
A rear door (114) that is assembled to the rear end of the caisson so as to be movable up and down, and that opens and closes the rear end opening;
An attachment base (120) provided with a rotating member (R) which is attached to and detached from the caisson through the upper end opening and rotates by a tidal current;
A crane (40j) which is erected from the caisson and has a hoist (43j) and a beam (42j) for guiding the hoist in the front-rear direction at the sea part;
A generator (9j) provided in the offshore portion directly above the caisson;
A transmission mechanism (150) for transmitting the rotational force of the rotating member to the generator;
The tidal current power generator characterized in that the rotating member is a water wheel (1j) or a propeller (2j).
The rotating member (R) is a water turbine (1j), and a substantially upper half portion or a substantially lower half portion of the water wheel is covered with a cover portion (101c) for blocking a tidal current (F). The tidal current power generation device according to 7 or 8.
The tidal current power generation device according to any one of claims 1 to 9 is arranged adjacent to a reef (P) and provided with an illumination light (L), thereby having a function as a lighthouse. Tidal current generator.