JP3210969U - Tidal current generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tidal current power generation device that can generate power using a tidal current and is easy to maintain and repair. A caisson body 10 having a bottom wall 11 and a pair of side walls 12, a front end opening 10a, a rear end opening 10b, and an upper end opening 10c, and receiving a tidal current from the front or rear, The front side tidal current receiving portion 15 and the rear side tidal current receiving portion 16 that are provided at both front and rear end portions of the caisson main body 10 to guide the tidal current into the caisson main body 10 and the caisson main body 10 are assembled, and the front end opening 10a A front door 13 and a rear door 14 for opening and closing the rear end opening 10b, a mounting base 20 provided with a rotating member R which is attached to and detached from the caisson main body 10 through the upper end opening 10c and rotates by a tidal current, and the caisson main body 10 A crane 30 erected from the top, a generator 40 provided in a sea portion immediately above the caisson main body 10, and a transmission mechanism 50 that transmits the rotational force of the rotating member R to the generator 40. The [Selection] Figure 1

Description

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

  Waves in the ocean and the tidal currents generated by the earth's rotation and lunar attraction are infinite energy sources. For these reasons, power generation devices using waves have been created so far (see, 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 has its own 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 tidal current does not depend on 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).

  The power of the sea is tremendously strong. And the power is deep and scary. And it's gentle and warm again. However, once it is mishandled, it will cause tremendous disasters. Even if a propeller and a generator are simply placed under the sea in the sea, power generation takes effect temporarily, but the turbine and generator are destroyed immediately.

  The tidal current power generation in the Japanese archipelago is very difficult to install at first, it is difficult to fix it on the seabed, and it is very difficult to maintain (maintenance, inspection, repair, etc.). It is difficult to. For practical use, maintenance must be taken into consideration. A specific example is how to deal with static electricity generated between the ocean current and fixed metal fittings and water turbines separately from the electric power generated by turning the water turbines. Generally, there is a “zinc board” in a ship that is sailing. This is a sacrificial anode, and if the corrosion-resistant zinc plate is not attached to the seabed / water turbine / fixture, the main body will come off. This is quite large and must be installed regularly. Even these exchanges must be replaced using divers. Water turbine generators in the sea must be highly controlled, and they are constantly facing the danger of destruction. There are many floating objects in the sea. For example, there are timbers that are sinking, and various types of garbage. There is also a risk that they will collide. And we must also consider the sea creatures. In addition, seaweeds and barnacles that attach to propellers, etc., must be washed regularly, just like ships on the voyage.

As the water flows from high to low, the sea is full of tides, and this is the mainstream, but various forces work against it and it is not straightforward. The flow of the ocean current is complex and is affected by the topography of the seabed. It is water that always seeks its own path. So my idea is to make a flow path in the sea, to organize and tidy up.

Japanese Patent No. 2838373 JP 2007-282466 A

  Conventional power generators that are installed in the sea or at the bottom of the sea and that use tidal currents are more efficient than power generators that use 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 using the tidal current, which is always a stable energy source, more effectively, and that can be easily repaired and repaired. It is an issue to provide.

  This will be described with reference to FIGS. The tidal current power generation device according to claim 1 generates power using the kinetic energy of the tidal current, and has a groove shape in which a pair of side walls 12 are erected from the left and right ends of the bottom wall 11, and includes a front end opening 10a, A caisson body 10 that has a rear end opening 10b and an upper end opening 10c and receives a tidal current from the front end opening 10a or the rear end opening 10b, and is widened forwardly from both front end ends of the caisson body 10. , A front side tidal current receiving portion 15 for guiding the tidal current into the caisson main body 10 and a rear side that is widened toward the rear from both ends of the rear end of the caisson main body 10 to guide the tidal current into the caisson main body 10. The tidal current receiving portion 16 and the front end of the caisson main body 10 are assembled to be movable up and down, the front door 13 for opening and closing the front end opening 10a and the rear end of the caisson main body 10 are assembled to be movable up and down, and the rear end is opened. A rear door 14 that opens and closes the portion 10b, an attachment base 20 that is attached to and detached from the caisson main body 10 through the upper end opening 10c, and that is provided with a rotating member R that is rotated by a tidal current, and is placed upright from the caisson main body 10 and The crane 30 having the hoist 31 and the rail 32 that guides the hoist 31 in the front-rear direction, the generator 40 provided in the maritime portion directly above the caisson main body 10, and the rotational force of the rotating member R on the generator 40 A transmission mechanism 50 for transmission.

  The tidal power generator according to claim 2 generates power using the kinetic energy of the tidal current, and has a groove shape in which a pair of side walls 12 are erected from both left and right ends of the bottom wall 11, and includes a front end opening 10 a, A caisson body 10 having a rear end opening 10b and an upper end opening 10c, and receiving a tidal current from the front end opening 10a or the rear end opening 10b, and wide from the both ends of the front end of the caisson body 10 toward the front. A front tide receiving portion 15 for guiding the tide into the caisson main body 10 and a wide width from the both ends of the rear end of the caisson main body 10 toward the rear to guide the tide into the caisson main body 10; The rear tidal current receiving portion 16 and the front end of the caisson main body 10 are assembled to be movable up and down, the front door 13 for opening and closing the front end opening 10a, and the rear end of the caisson main body 10 are assembled to be movable up and down. A rear door 14 that opens and closes the rear end opening 10b, a mounting base 20 that is attached to and detached from the caisson main body 10 through the upper end opening 10c, and is provided with a rotating member R that rotates by a tidal current, and a caisson main body 10. A crane 30 having a hoist 31 and a rail 32 for guiding the hoist 31 in the front-rear direction in the sea part, a generator 40 provided in the sea part immediately above the caisson main body 10, and the generator 40, And a transmission mechanism 50 for transmitting the rotational force. The rotating member R is constituted by the water wheel 1 or the propeller 2.

  A tidal current power generation device according to a third aspect is the device according to the first or second aspect, wherein the rotating member R is constituted by a water turbine 1, and the upper half or the substantially lower half of the water turbine 1 is blocked by the tidal current. It shall be covered with a covering part for.

It is said that water follows a square. If you make a path in the water, follow it. And there are flood countermeasures on the extension line. River water sometimes causes rough floods. It was possible to avoid flood damage by weakening the power of the water by spreading the river flow loosely and broadly into a fan shape.

In the same way, if you put the water passage in the opposite direction, the power of water will become stronger. There are many waterworks, from 3.5 knots to 5.5 knots. As described above, a water turbine can be installed by generating a strait by arranging caisson artificially and then placing a sea road here, and power can be generated accordingly. The height of the caisson extends from the bottom of the sea to the sea level, and decks are made on top of it to create various facilities. The highest contemporary caisson is made of 65m.

The power to turn this water wheel is enormous. I will calculate later and I will explain the caisson shape later. In this channel, several or several different types of water turbines can be installed instead of just one. In particular, developers have invented and developed highly efficient water turbines. For example, a glasses type water wheel. It is more efficient to move many suitable turbines than to move one large turbine to collect electricity. Now, tidal power generation from now on needs to be universal and adaptable to the right place so that it can be widely used. Up to now, it was said that power generation is only possible if it is 1.5 knots or more, but it seems that it can be made 2.5 knots or more by this caisson arrangement. Easy maintenance (maintenance / inspection). It is necessary to be able to perform maintenance frequently. When using seawater, there is a salt damage. However, I have experience of making steel ships, having screws, and using them. You can overcome various difficulties.

We can generate electricity using the flow of the tide. In particular, water turbines, mounting brackets, and materials for fixing have been developed and developed. The future is promising because it has been devised up to now and its development is remarkable. If you make a waterway with this caisson and install it there, you can maintain it regularly. The “dry dock” was conceived for that purpose. They say that they create ships that do not float docks, and that they create dry docks without seawater, such as ship / repair and ship bottom cleaning, paint rusting, and zinc plate replacement. Close the vertical moving doors (must be strong. You must put in and out. This requires a crane) at both ends of the narrow waterway centered on this watermill. When the tide stops, lower the doors. The seawater is drained. Then, other machines such as turbines and power generation materials (which can be placed on the deck) are set aside, and managers can work just as they do on land. Of course, it is possible to replace the zinc plate. This is because maintenance is important for tidal current power generation in the future, and maintenance is purchased in comparison with thermal power generation that generates CO ₂ from raw materials.

Since free tidal energy is used, the first thing to consider is to keep the maintenance costs as well as the initial depreciation costs as low as possible. From the beginning, a watermill is installed on the seabed and maintenance is carried out from the ship anchored on the sea, electric wires are repaired, caisson is lined up from the beginning, and vertical sliding doors are placed before and after it. Better than creating a loss on the upper deck by creating a worker room on the upper deck and using the power generated on the upper deck to produce hydrogen and oxygen to transmit to land The present invention seeks to provide a system.

When repairing, it becomes a dry dock, and when moving a water wheel, it becomes a path through which seawater flows. By arranging caisson that can generate electricity by moving the water wheel, the ocean current (full tide) moves in the opposite direction with a time difference and generates electricity at the same time. This is basic, but it may cause the ocean current to escape. The opening has a funnel-like shape formed by a front tide receiving portion and a rear tide receiving portion so that a strong water flow is applied to a water turbine installed in a narrow passage. The length and angle of the front and rear tidal current slopes are set to the optimal shape for the ocean current flowing on the site, and the height is set according to the water depth. It is usually between 10 m and 20 m, or in some cases, reaches 90 m, and is suitable for the installation location. An underwater structure for caisson breakwaters and landfills, which creates concrete dredging and creates a sea bottom and a mountain that are flattened in advance on the site, and then sinks to them. Iron rods (anchors) are embedded throughout the caisson in advance. Leave in.

The tidal current power generation device 100 according to claim 1 is a groove shape in which a pair of side walls 12 is erected from both left and right end portions of the bottom wall 11, and has a front end opening portion 10a, a rear end opening portion 10b, and an upper end opening portion 10c. The caisson main body 10 that receives the tidal current from the front end opening 10a or the rear end opening 10b, and the front tidal current receiver that is widened forward from both front end ends of the caisson main body 10 and guides the tidal current into the caisson main body 10. Part 15, a rear side tide receiving part 16 that is widened backward from both ends of the rear end of the caisson body 10 to guide the tide into the caisson body 10, and moves up and down to the front end of the caisson body 10 The front door 13 for freely assembling and opening and closing the front end opening 10a, the rear door 14 for opening and closing the rear end opening 10b and the rear door 14 for opening and closing the rear end opening 10b, and the caisson main body 10 A mounting base 20 provided with a rotating member R that is attached / detached through the opening 10c and rotates by a tidal current, and a rail 32 that is erected from the caisson main body 10 and guides the hoist 31 in the front-rear direction to the sea part. , The generator 40 provided in the sea part of the caisson main body 10, and the transmission mechanism 50 that transmits the rotational force of the rotating member R to the generator 40.

  Thus, the tidal current is received in the caisson main body 10 from the front end opening 10a or the rear end opening 10b, the rotating member R is rotated by the tidal current, and the rotational force is transmitted to the offshore generator 40 by the transmission mechanism 50 to generate power. can do.

  At this time, since the front tide receiving part 15 and the rear tide receiving part 16 are provided, the tide can be effectively guided in the caisson main body 10. 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.

  Moreover, since the caisson main body 10 has the upper end opening 10c, the mounting base 20 can be easily attached to and detached from the caisson main body 10 through the upper end opening 10c. Therefore, for example, when repairing and replacing the rotating member R, the mounting base 20 can be lifted using the crane 30 and a predetermined operation can be performed at sea (for example, on the barge S). Therefore, maintenance can be easily performed.

  The caisson main body 10 has a groove shape composed of a bottom wall 11 and a pair of side walls 12, 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 100 according to claim 2 exhibits the same effect as the device according to claim 1. In addition, since the rotating member R is constituted by the water turbine 1 or the propeller 2, it can effectively receive the tidal current and rotate smoothly, and the power generation effect can be further enhanced.

  The tidal current power generation device 100 according to claim 3 exhibits the same effect as the device according to claims 1 and 2. Further, since the rotating member R is constituted by the water turbine 1 and the substantially upper half or the substantially lower half of the water turbine 1 is covered with the cover portion for blocking the tidal current, the water turbine 1 can be effectively rotated. it can. By the way, if a cover is not provided, the entire turbine wheel 1 (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.

It is a partial cross section schematic side view which shows embodiment of the tidal current electric power generating apparatus 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. It is a partial top view of the tidal current power generation device shown in FIG. It is a partial front view of the tidal current power generation device 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. It is a front view which shows the state which lifts an attachment base | substrate and moves back in the tidal current electric power generating apparatus shown in FIG. It is a side view of FIG.

  An embodiment of a tidal current power generation apparatus 100 according to the present invention is shown in FIGS. The device 100 generates power using the kinetic energy of the tidal current F, and includes a caisson main body 10, a front tidal current receiving portion 15, a rear tidal current receiving portion 16, a front door 13, a rear door 14, a mounting base 20, a crane. 30, a generator 40 and a transmission mechanism 50 are provided.

  Note that the rotating member R of the present embodiment is constituted by a water turbine 1, and the water wheel 1 is fixed to a water wheel shaft 1 a that is rotatably supported on the mounting base 20. A bevel gear B is attached to the end of the water wheel shaft 1a.

  The caisson body 10 has a grooved front shape with a pair of side walls 12 erected from both left and right ends of the bottom wall 11, and has a front end opening 10a, a rear end opening 10b, and an upper end opening 10c. The tidal current is received from the front end opening 10a or the rear end opening 10b depending on the direction. The material for forming the caisson main body 10 is not limited, but is preferably formed of a material having a large specific gravity such as concrete in order to be stably placed on the seabed G. Moreover, although the magnitude | size of the caisson main body 10 is not limited, For example, the thing of about 100m in length, width 20m, and height 15m is suitable.

  The front-side tide receiving portion 15 is formed in a wide shape that gradually becomes wider from both ends of the front end of the caisson body 10 toward the front, and effectively guides the tide into the caisson body 10 through the front opening. The rear tidal current receiving portion 16 is provided in a wide shape that gradually widens rearward from both ends of the rear end of the caisson main body 10, and effectively guides the tidal current into the caisson main body 10 through the rear opening. To do.

  By the action of the front tide receiving part 15 and the rear tide receiving part 16, the speed of the tide inside the caisson body 10 can be made higher than that outside the caisson body 10, and the turbine 1 can be rotated more efficiently. Can be made. Although the material for forming the front tide receiving part 15 and the rear tide receiving part 16 is not limited, it is preferably formed integrally with the caisson body 10 from concrete.

  The front door 13 is assembled to the front end portion of the caisson main body 10 so as to be movable up and down, and opens and closes the front end opening 10 a of the caisson main body 10. The rear door 14 is assembled to the rear end of the caisson main body 10 so as to be movable up and down, and opens and closes the rear end opening 10b of the caisson main body 10. The front door 13 and the rear door 14 can be moved up and down by a hoist 31 using a crane 30. The hoist 31 can freely move in the front-rear direction along the rail 32.

  Since the front door 13 and the rear door 14 need to withstand the tidal current F, it is preferable to form the front door 13 and the rear door 14 with a material having rigidity and durability such as metal. The front door 13 and the rear door 14 are lowered when the mounting base 20 to be described later is attached to or detached from the caisson main body 10 to close the front end opening 10a and the rear end opening 10b. The mounting current 20 can be easily attached and detached.

  The mounting base 20 includes a rotating member R (water turbine 1) that rotates by a tidal current, and is attached to and detached from the caisson main body 10 through its upper end opening 10c. The substantially upper half of the water turbine 1 is covered with a cover 1c for blocking the tidal current F, so that the tidal current acts only on the upper half of the water turbine 1 (see FIG. 6). In addition, this cover part 1c can also cover substantially the lower half part of the water turbine 1.

  The attachment base 20 can be attached / detached via the hoist 31 using the crane 30 erected from the caisson main body 10. The number of water turbines 1 is not limited, and a plurality of water turbines 1 can be provided depending on the length of the mounting base 20. When a plurality of water turbines 1 are provided, the corresponding number of generators 40 can be provided. Further, since the direction of the tide F is periodically changed due to tides and the like, the water turbine 1 freely rotates in both the clockwise direction and the counterclockwise direction according to the flow.

  The transmission mechanism 50 transmits the rotational force of the rotating member R to the generator 40 provided in the sea portion above the sea surface W immediately above the caisson main body 10, and is a vertical rotating shaft having bevel gears B attached to both upper and lower ends. 51 is provided. The bevel gear B provided at the upper end of the vertical rotating shaft 51 is meshed with the bevel gear B provided at the tip of the rotating shaft 41 protruding from the generator 40, and the rotation of the vertical rotating shaft 51 is transmitted to the rotating shaft 41. Electric power is generated by the generator 40 by the rotational force.

  In the present embodiment, the mounting table 17 is provided on the sea above the caisson main body 10, and the generator 40 is disposed thereon. By attaching the speed increaser 42 to the generator 40, the rotational speed of the vertical rotating shaft 51 can be increased, and the power generation capacity of the generator can be further increased. Further, the rotating shaft 41 of the generator 40 and the vertical rotating shaft 51 of the transmission mechanism 50 are detachably connected via a coupling C. In addition, a charger 60 that stores electricity generated by the generator 40 is provided adjacent to the generator 40.

When the front and rear doors 13 and 14 are moved down and closed, and the upper part of the caisson body 10 is protruded above the sea surface W, the drainage equipment 70 communicates the interior 10a of the caisson body 10 to the outside. The drainage facility 70 includes a drainage pipe 71, and a lower end portion thereof is disposed in communication with the caisson body 10, and an upper end portion thereof is disposed on the sea surface W. Further, the drainage equipment 70 includes a drainage pump 72, and the seawater inside the caisson main body 10 is discharged through the drainage pipe 71 by its power.

  In addition, the tidal current power generation device 100 according to the present embodiment is provided with the engaging convex portion 20a at the left and right end portions of the mounting base 20, and the engaging concave portion 10d is formed in the corresponding portion of the caisson main body 10, and the engagement is performed. By engaging the convex portion 20a with the engaging concave portion 10d, the mounting base 20 is slidable in the vertical direction on the caisson body 10 so that it can be attached and detached in a stable posture.

  The tidal current power generation apparatus 100 according to the present embodiment can be installed and operated as follows, for example. First, on the ground, an integral body of the caisson main body 10, the front tide receiving part 15 and the rear tide receiving part 16 is formed of concrete or the like. The front door 13 and the rear door 14 which are separately molded are attached to this, and the mounting base 20 to which the rotating member R (water turbine 1) is further attached is assembled to the caisson body 10 and the transmission mechanism 50 is assembled to the tidal current power generation device 100. Configure.

  Next, the tidal current power generation device 100 thus configured is loaded on a barge S or the like, transported over the sea, and 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 100 is lowered by its own weight and installed on the seabed G. The direction of the tidal power generation device 100 on the sea floor G can be set by operating a large elevator so that the tidal current F smoothly enters the caisson body 10. Prior to power generation, the front door 13 and the rear door 14 are pulled up and left open.

  In addition, by installing a strong net at the front end and rear end of the caisson main body 10 or the front end of the front tide receiving part 15 and the rear end of the rear tide receiving part 16, floating dust, timber, etc. It is possible to prevent the caisson body 10 from entering and colliding with the water wheel 1. Moreover, it is possible to prevent parts such as the damaged water turbine 1 from flowing out.

  Thus, the tidal current F flows into the caisson main body 10 of the tidal current power generation device 100 placed on the seabed G, and the water turbine 1 is rotated by the energy. At this time, the function of the front tide receiving portion 15 can send more tide to the inside of the caisson body 10 as compared with the case where it is not provided. Thereby, the tidal current in the caisson main body 10 can be made stronger, and the water turbine 1 can be rotated more effectively.

  The rotational force of the water turbine 1 is transmitted to the generator 40 via the transmission mechanism 50, and electricity is generated by the generator 40. The generated electricity is stored in the charger 60. The charger 60 in which electricity is stored is periodically transported to the ground for use. Instead of providing the charger 60 or together with it, it is also possible to connect an electric wire to the generator 40 and send electricity directly to the ground.

  Further, the direction of the tidal current F periodically changes depending on the tides and the like, and the caisson body 10 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 10a of the caisson body 10 toward the rear end opening 10b, and conversely, when the tidal current F is from right to left, the rear end opening 10b. To the front end opening 10a. Thereby, it is possible to generate electricity by rotating the water turbine 1 almost continuously.

  When repairing or replacing the water turbine 1 of the tidal current power generation apparatus 100, the front door 13 is lowered by the crane 30 to close the front end opening 10a, and the rear door 14 is lowered by the crane 30 to close the rear end opening 10b. As a result, the generation of the tidal current F inside the caisson body 10 is blocked (or weakened). In this state, the mounting base 20 is pulled up to a barge S or a work table (not shown) using the crane 30, and parts such as the water turbine 1 are repaired or replaced on the barge S or the work table (FIG. 8). And FIG. 9). When the mounting base 20 is pulled up, the generator 40 positioned immediately above is moved by moving the mounting table 17 to avoid interference with the mounting base 20 (see FIG. 8).

  In this way, the repair or replacement of the parts is performed at sea by lifting the mounting base 20, so that the repair and replacement work can be easily performed. Therefore, maintenance of the tidal current power generation apparatus 100 is extremely easy.

  After the repair of the parts or the like is completed, the water wheel 1 or the like is attached to the attachment base 20, and then the attachment base 20 is submerged in the sea using the crane 30 and attached to the caisson main body 10 again. At this time, the mounting base 20 is lowered in a state where the engaging convex portion 20 a is inserted into the engaging concave portion 10 d of the caisson main body 10. Thereafter, the front door 13 and the rear door 14 are pulled up by the crane 30 to open the front end opening 10 a and the rear end opening 10 b of the caisson body 10, and the tidal current F is received in the caisson body 10. Thereby, the water turbine 1 is rotated again to generate power.

  Note that another rotating member R such as the propeller 2 can be used instead of the water turbine 1. When the propeller 2 is used, the propeller shaft 2a is rotatably attached to the mounting base 20 in the front-rear direction, and one or more propellers 2 are fixed to the propeller shaft 2a (see FIG. 7). The propeller shaft 2a is meshed with a first horizontal rotation shaft 2b having a plurality of bevel gears B fixed thereto, and the first horizontal rotation shaft 2b is meshed with a second horizontal rotation shaft 2c having bevel gears B fixed at both ends thereof. Then, the second horizontal rotation shaft 2 c is engaged with the vertical rotation shaft 51 of the transmission mechanism 50. Thereby, the propeller 2 is rotated by the tidal current F, and the rotational force is transmitted from the propeller shaft 2a to the generator 40 via the first horizontal rotating shaft 2b, the second horizontal rotating shaft 2c and the transmission mechanism 50 (vertical rotating shaft 51). Tell the power generation.

The tidal current power generation apparatus 100 according to the present embodiment exhibits the following operational effects.
(1) Since the front tidal current receiving portion 15 and the rear tidal current receiving portion 16 are provided, the tidal current can be effectively sent into the caisson body 10 and the water turbine 1 can be rotated efficiently. Thereby, power generation efficiency can be improved.

  (2) When repairing and exchanging parts such as the water turbine 1, the mounting base 20 to which they are attached can be lifted by the crane 30 and carried out at sea, or the front door 13 and the rear door 14 can be opened and emptied. The caisson body 10 that has become a dock can be used for repair or replacement. It depends on the degree of failure. Therefore, maintenance of the tidal current power generation apparatus 100 is easy.

  (3) When attaching / detaching the mounting base 20 to / from the caisson main body 10, the front door 13 and the rear door 14 are attached to the front end opening 10a and the rear end opening 10b to block (or weaken) the tide flow inside the caisson main body 10. Therefore, the attachment base 20 can be easily attached and detached. Therefore, the maintenance of the tidal current power generation apparatus 100 can be further facilitated.

  (4) The caisson body 10 is structurally stable because it has a front groove shape composed of a bottom wall 11 and a pair of side walls 12. Therefore, it can be easily installed on the seabed G in a stable posture.

  (5) Since the tidal current power generation device 100 is assembled almost on land, it is transported to the sea, and is sunk under its own weight on the seabed G using a large elevator, so that assembly work on the seabed 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.

  (6) Since electricity generated by the generator 40 can be stored in the charger 60 and the capacitor 60 can be transported to the ground and used, 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.

  (7) Since the attachment base 20, the front door 13, and the rear door 14 can be attached to and detached from the caisson main body 10 only by the crane 30, facilities required for attaching and detaching them can be simplified. Therefore, the structure of the tidal current power generation apparatus 100 can be simplified.

100 tidal current power generator 1 turbine (rotating member)
DESCRIPTION OF SYMBOLS 1a Water axle 1c Cover part 2 Propeller (rotating member)
2a Propeller shaft 2b First horizontal rotating shaft 2c Second horizontal rotating shaft 10 Caisson body 10a Front end opening 10b Rear end opening 10c Upper end opening 10d Engaging recess 11 Bottom wall 12 Side wall 13 Front door 14 Rear door 15 Front tide receiver Part 16 Rear tidal receiving part 17 Mounting table 20 Mounting base 20a Engaging convex part 30 Crane 31 Hoist 32 Rail 40 Generator 41 Rotating shaft 42 Speed increaser 50 Transmission mechanism 51 Vertical rotating shaft 60 Charger B Bevel gear C Coupling F Tidal current G Seabed R Rotating member S Barge W Sea surface

100 tidal current power generator 1 turbine (rotating member)
DESCRIPTION OF SYMBOLS 1a Water axle 1c Cover part 2 Propeller (rotating member)
2a Propeller shaft 2b First horizontal rotating shaft 2c Second horizontal rotating shaft 10 Caisson body 10a Front end opening 10b Rear end opening 10c Upper end opening 10d Engaging recess 11 Bottom wall 12 Side wall 13 Front door 14 Rear door 15 Front tide receiver Numeral 16 Rear tide receiving portion 17 Mounting table 20 Mounting base 20a Engaging convex portion 30 Crane 31 Hoist 32 Rail 40 Generator 41 Rotating shaft 42 Speed up gear 50 Transmission mechanism 51 Vertical rotating shaft 60 Charger
70 Drainage equipment
71 Drain pipe
72 Drain pump B Bevel gear C Coupling F Tidal current G Sea bottom R Rotating member S Barge W Sea surface

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

  Waves in the ocean and the tidal currents generated by the earth's rotation and lunar attraction are infinite energy sources. For these reasons, power generation devices using waves have been created so far (see, 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 has its own 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 tidal current does not depend on 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).

  The power of the sea is tremendously strong. And the power is deep and scary. And it's gentle and warm again. However, once it is mishandled, it will cause tremendous disasters. Even if a propeller and a generator are simply placed under the sea in the sea, power generation takes effect temporarily, but the turbine and generator are destroyed immediately.

  The tidal current power generation in the Japanese archipelago is very difficult to install at first, it is difficult to fix it on the seabed, and it is very difficult to maintain (maintenance, inspection, repair, etc.). It is difficult to. For practical use, maintenance must be taken into consideration. A specific example is how to deal with static electricity generated between the ocean current and fixed metal fittings and water turbines separately from the electric power generated by turning the water turbines. Generally, there is a “zinc board” in a ship that is sailing. This is a sacrificial anode, and if the corrosion-resistant zinc plate is not attached to the seabed / water turbine / fixture, the main body will come off. This is quite large and must be installed regularly. Even these exchanges must be replaced using divers. Water turbine generators in the sea must be highly controlled, and they are constantly facing the danger of destruction. There are many floating objects in the sea. For example, there are timbers that are sinking, and various types of garbage. There is also a risk that they will collide. And we must also consider the sea creatures. In addition, seaweeds and barnacles that attach to propellers, etc., must be washed regularly, just like ships on the voyage.

  As the water flows from high to low, the sea is full of tides, and this is the mainstream, but various forces work against it and it is not straightforward. The flow of the ocean current is complex and is affected by the topography of the seabed. It is water that always seeks its own path. So my idea is to make a flow path in the sea, to organize and tidy up.

Japanese Patent No. 2838373 JP 2007-282466 A

  Conventional power generators that are installed in the sea or at the bottom of the sea and that use tidal currents are more efficient than power generators that use 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 using the tidal current, which is always a stable energy source, more effectively, and that can be easily repaired and repaired. It is an issue to provide.

This will be described with reference to FIGS. The tidal current power generation device according to claim 1 generates power using the kinetic energy of the tidal current, and has a groove shape in which a pair of side walls 12 are erected from the left and right ends of the bottom wall 11, and includes a front end opening 10a, A caisson body 10 that has a rear end opening 10b and an upper end opening 10c and receives a tidal current from the front end opening 10a or the rear end opening 10b, and is widened forwardly from both front end ends of the caisson body 10. , A front side tidal current receiving portion 15 for guiding the tidal current into the caisson main body 10 and a rear side that is widened toward the rear from both ends of the rear end of the caisson main body 10 to guide the tidal current into the caisson main body 10. The tidal current receiving portion 16 and the front end of the caisson main body 10 are assembled to be movable up and down, the front door 13 for opening and closing the front end opening 10a and the rear end of the caisson main body 10 are assembled to be movable up and down, and the rear end is opened. A rear door 14 that opens and closes the portion 10b, an attachment base 20 that is attached to and detached from the caisson main body 10 through the upper end opening 10c, and that is provided with a rotating member R that is rotated by a tidal current, and is placed upright from the caisson main body 10 and The crane 30 having the hoist 31 and the beam 32 that guides the hoist 31 in the front-rear direction, the generator 40 provided in the maritime portion directly above the caisson main body 10, and the rotational force of the rotating member R on the generator 40 A transmission mechanism 50 for transmission.

The tidal power generator according to claim 2 generates power using the kinetic energy of the tidal current, and has a groove shape in which a pair of side walls 12 are erected from both left and right ends of the bottom wall 11, and includes a front end opening 10 a, A caisson body 10 having a rear end opening 10b and an upper end opening 10c, and receiving a tidal current from the front end opening 10a or the rear end opening 10b, and wide from the both ends of the front end of the caisson body 10 toward the front. A front tide receiving portion 15 for guiding the tide into the caisson main body 10 and a wide width from the both ends of the rear end of the caisson main body 10 toward the rear to guide the tide into the caisson main body 10; The rear tidal current receiving portion 16 and the front end of the caisson main body 10 are assembled to be movable up and down, the front door 13 for opening and closing the front end opening 10a, and the rear end of the caisson main body 10 are assembled to be movable up and down. A rear door 14 that opens and closes the rear end opening 10b, a mounting base 20 that is attached to and detached from the caisson main body 10 through the upper end opening 10c, and is provided with a rotating member R that rotates by a tidal current, and a caisson main body 10. A crane 30 having a hoist 31 and a beam 32 for guiding the hoist 31 in the front-rear direction in the sea part, a generator 40 provided in the sea part immediately above the caisson main body 10, and the generator 40, And a transmission mechanism 50 for transmitting the rotational force. The rotating member R is constituted by the water wheel 1 or the propeller 2.

A tidal current power generation device according to a third aspect is the device according to the first or second aspect, wherein the rotating member R is constituted by a water turbine 1, and the upper half or the substantially lower half of the water turbine 1 is blocked by the tidal current. For this reason, the cover portion 1c is covered.

  It is said that water follows a square. If you make a path in the water, follow it. And there are flood countermeasures on the extension line. River water sometimes causes rough floods. It was possible to avoid flood damage by weakening the power of the water by spreading the river flow loosely and broadly into a fan shape.

  In the same way, if you put the water passage in the opposite direction, the power of water will become stronger. There are many waterworks, from 3.5 knots to 5.5 knots. As described above, a water turbine can be installed by generating a strait by arranging caisson artificially and then placing a sea road here, and power can be generated accordingly. The height of the caisson extends from the bottom of the sea to the sea level, and decks are made on top of it to create various facilities. The highest contemporary caisson is made of 65m.

  The power to turn this water wheel is enormous. I will calculate later and I will explain the caisson shape later. In this channel, several or several different types of water turbines can be installed instead of just one. In particular, developers have invented and developed highly efficient water turbines. For example, a glasses type water wheel. It is more efficient to move many suitable turbines than to move one large turbine to collect electricity. Now, tidal power generation from now on needs to be universal and adaptable to the right place so that it can be widely used. Up to now, it was said that power generation is only possible if it is 1.5 knots or more, but it seems that it can be made 2.5 knots or more by this caisson arrangement. Easy maintenance (maintenance / inspection). It is necessary to be able to perform maintenance frequently. When using seawater, there is a salt damage. However, I have experience of making steel ships, having screws, and using them. You can overcome various difficulties.

We can generate electricity using the flow of the tide. In particular, water turbines, mounting brackets, and materials for fixing have been developed and developed. The future is promising because it has been devised up to now and its development is remarkable. If you make a waterway with this caisson and install it there, you can maintain it regularly. The “dry dock” was conceived for that purpose. They say that they create ships that do not float docks, and that they create dry docks without seawater, such as ship / repair and ship bottom cleaning, paint rusting, and zinc plate replacement. Close the vertical moving doors (must be strong. You must put in and out. This requires a crane) at both ends of the narrow waterway centered on this watermill. When the tide stops, lower the doors. The seawater is drained. Then, other machines such as turbines and power generation materials (which can be placed on the deck) are set aside, and managers can work just as they do on land. Of course, it is possible to replace the zinc plate. This is because maintenance is important for tidal current power generation in the future, and maintenance is purchased in comparison with thermal power generation that generates CO ₂ from raw materials.

  Since free tidal energy is used, the first thing to consider is to keep the maintenance costs as well as the initial depreciation costs as low as possible. From the beginning, a watermill is installed on the seabed and maintenance is carried out from the ship anchored on the sea, electric wires are repaired, caisson is lined up from the beginning, and vertical sliding doors are placed before and after it. Better than creating a loss on the upper deck by creating a worker room on the upper deck and using the power generated on the upper deck to produce hydrogen and oxygen to transmit to land The present invention seeks to provide a system.

  When repairing, it becomes a dry dock, and when moving a water wheel, it becomes a path through which seawater flows. By arranging caisson that can generate electricity by moving the water wheel, the ocean current (full tide) moves in the opposite direction with a time difference and generates electricity at the same time. This is basic, but it may cause the ocean current to escape. The opening has a funnel-like shape formed by a front tide receiving portion and a rear tide receiving portion so that a strong water flow is applied to a water turbine installed in a narrow passage. The length and angle of the front and rear tidal current slopes are set to the optimal shape for the ocean current flowing on the site, and the height is set according to the water depth. It is usually between 10 m and 20 m, or in some cases, reaches 90 m, and is suitable for the installation location. An underwater structure for caisson breakwaters and landfills, which creates concrete dredging and creates a sea bottom and a mountain that are flattened in advance on the site, and then sinks to them. Iron rods (anchors) are embedded throughout the caisson in advance. Leave in.

The tidal current power generation device 100 according to claim 1 is a groove shape in which a pair of side walls 12 is erected from both left and right end portions of the bottom wall 11, and has a front end opening portion 10a, a rear end opening portion 10b, and an upper end opening portion 10c. The caisson main body 10 that receives the tidal current from the front end opening 10a or the rear end opening 10b, and the front tidal current receiver that is widened forward from both front end ends of the caisson main body 10 and guides the tidal current into the caisson main body 10. Part 15, a rear side tide receiving part 16 that is widened backward from both ends of the rear end of the caisson body 10 to guide the tide into the caisson body 10, and moves up and down to the front end of the caisson body 10 The front door 13 for freely assembling and opening and closing the front end opening 10a, the rear door 14 for opening and closing the rear end opening 10b and the rear door 14 for opening and closing the rear end opening 10b, and the caisson main body 10 Is releasably through an opening 10c, a mounting base 20 provided with a rotary member R which rotates by power flow, is erected from the caisson body 10, the sea portion, the beam 32 for guiding the hoist 31 and the hoist 31 in the longitudinal direction , The generator 40 provided in the sea part of the caisson main body 10, and the transmission mechanism 50 that transmits the rotational force of the rotating member R to the generator 40.

  Thus, the tidal current is received in the caisson main body 10 from the front end opening 10a or the rear end opening 10b, the rotating member R is rotated by the tidal current, and the rotational force is transmitted to the offshore generator 40 by the transmission mechanism 50 to generate power. can do.

  At this time, since the front tide receiving part 15 and the rear tide receiving part 16 are provided, the tide can be effectively guided in the caisson main body 10. 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.

  Moreover, since the caisson main body 10 has the upper end opening 10c, the mounting base 20 can be easily attached to and detached from the caisson main body 10 through the upper end opening 10c. Therefore, for example, when repairing and replacing the rotating member R, the mounting base 20 can be lifted using the crane 30 and a predetermined operation can be performed at sea (for example, on the barge S). Therefore, maintenance can be easily performed.

  The caisson main body 10 has a groove shape composed of a bottom wall 11 and a pair of side walls 12, 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 100 according to claim 2 exhibits the same effect as the device according to claim 1. In addition, since the rotating member R is constituted by the water turbine 1 or the propeller 2, it can effectively receive the tidal current and rotate smoothly, and the power generation effect can be further enhanced.

The tidal current power generation device 100 according to claim 3 exhibits the same effect as the device according to claims 1 and 2. Moreover, since the rotating member R is constituted by the water turbine 1 and the upper half or the substantially lower half of the water turbine 1 is covered with the cover portion 1c for blocking the tidal current, the water turbine 1 is effectively rotated. Can do. By the way, if the cover 1c is not provided, the entire turbine wheel 1 (upper half and lower half) receives a tidal current and cannot be rotated. Such an adverse effect can be eliminated by providing the cover 1c .

It is a partial cross section schematic side view which shows embodiment of the tidal current electric power generating apparatus 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. It is a partial top view of the tidal current power generation device shown in FIG. It is a partial front view of the tidal current power generation device 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. It is a front view which shows the state which lifts an attachment base | substrate and moves back in the tidal current electric power generating apparatus shown in FIG. It is a side view of FIG.

  An embodiment of a tidal current power generation apparatus 100 according to the present invention is shown in FIGS. The device 100 generates power using the kinetic energy of the tidal current F, and includes a caisson main body 10, a front tidal current receiving portion 15, a rear tidal current receiving portion 16, a front door 13, a rear door 14, a mounting base 20, a crane. 30, a generator 40 and a transmission mechanism 50 are provided.

  Note that the rotating member R of the present embodiment is constituted by a water turbine 1, and the water wheel 1 is fixed to a water wheel shaft 1 a that is rotatably supported on the mounting base 20. A bevel gear B is attached to the end of the water wheel shaft 1a.

  The caisson body 10 has a grooved front shape with a pair of side walls 12 erected from both left and right ends of the bottom wall 11, and has a front end opening 10a, a rear end opening 10b, and an upper end opening 10c. The tidal current is received from the front end opening 10a or the rear end opening 10b depending on the direction. The material for forming the caisson main body 10 is not limited, but is preferably formed of a material having a large specific gravity such as concrete in order to be stably placed on the seabed G. Moreover, although the magnitude | size of the caisson main body 10 is not limited, For example, the thing of about 100m in length, width 20m, and height 15m is suitable.

  The front-side tide receiving portion 15 is formed in a wide shape that gradually becomes wider from both ends of the front end of the caisson body 10 toward the front, and effectively guides the tide into the caisson body 10 through the front opening. The rear tidal current receiving portion 16 is provided in a wide shape that gradually widens rearward from both ends of the rear end of the caisson main body 10, and effectively guides the tidal current into the caisson main body 10 through the rear opening. To do.

  By the action of the front tide receiving part 15 and the rear tide receiving part 16, the speed of the tide inside the caisson body 10 can be made higher than that outside the caisson body 10, and the turbine 1 can be rotated more efficiently. Can be made. Although the material for forming the front tide receiving part 15 and the rear tide receiving part 16 is not limited, it is preferably formed integrally with the caisson body 10 from concrete.

The front door 13 is assembled to the front end portion of the caisson main body 10 so as to be movable up and down, and opens and closes the front end opening 10 a of the caisson main body 10. The rear door 14 is assembled to the rear end of the caisson main body 10 so as to be movable up and down, and opens and closes the rear end opening 10b of the caisson main body 10. The front door 13 and the rear door 14 can be moved up and down by a hoist 31 using a crane 30. The hoist 31 can freely move in the front-rear direction along the beam 32.

  Since the front door 13 and the rear door 14 need to withstand the tidal current F, it is preferable to form the front door 13 and the rear door 14 with a material having rigidity and durability such as metal. The front door 13 and the rear door 14 are lowered when the mounting base 20 to be described later is attached to or detached from the caisson main body 10 to close the front end opening 10a and the rear end opening 10b. The mounting current 20 can be easily attached and detached.

  The mounting base 20 includes a rotating member R (water turbine 1) that rotates by a tidal current, and is attached to and detached from the caisson main body 10 through its upper end opening 10c. The substantially upper half of the water turbine 1 is covered with a cover 1c for blocking the tidal current F, so that the tidal current acts only on the upper half of the water turbine 1 (see FIG. 6). In addition, this cover part 1c can also cover substantially the lower half part of the water turbine 1.

  The attachment base 20 can be attached / detached via the hoist 31 using the crane 30 erected from the caisson main body 10. The number of water turbines 1 is not limited, and a plurality of water turbines 1 can be provided depending on the length of the mounting base 20. When a plurality of water turbines 1 are provided, the corresponding number of generators 40 can be provided. Further, since the direction of the tide F is periodically changed due to tides and the like, the water turbine 1 freely rotates in both the clockwise direction and the counterclockwise direction according to the flow.

The transmission mechanism 50 transmits the rotational force of the rotating member R to the generator 40 provided in the sea portion directly above the caisson main body 10 and above the sea surface W, and a vertical rotation shaft having a coupling C attached to the lower end portion. 51 is provided. Coupling C provided on the upper end of the vertical rotation shaft 51, and connected to the lower end of the rotary shaft 41 protruding from the generator 40, and transmits the rotation of the vertical shaft 51 to the rotating shaft 41, by the rotational force Power is generated by the generator 40.

In the present embodiment, the mounting table 17 is provided on the sea above the caisson main body 10, and the generator 40 is disposed thereon. By Rukoto is interposed speed increaser 42 to the input side of the generator 40, Hayashi increase the rotational speed of the vertical shaft 51, it is possible to further increase the power generation capacity of the generator. Further, the rotating shaft 41 of the generator 40 and the vertical rotating shaft 51 of the transmission mechanism 50 are detachably connected via a coupling C. In addition, a charger 60 that stores electricity generated by the generator 40 is provided adjacent to the generator 40.

  When the front and rear doors 13 and 14 are moved down and closed, and the upper part of the caisson body 10 is protruded above the sea surface W, the drainage equipment 70 communicates the interior 10a of the caisson body 10 to the outside. The drainage facility 70 includes a drainage pipe 71, and a lower end portion thereof is disposed in communication with the caisson body 10, and an upper end portion thereof is disposed on the sea surface W. Further, the drainage equipment 70 includes a drainage pump 72, and the seawater inside the caisson main body 10 is discharged through the drainage pipe 71 by its power.

  In addition, the tidal current power generation device 100 according to the present embodiment is provided with the engaging convex portion 20a at the left and right end portions of the mounting base 20, and the engaging concave portion 10d is formed in the corresponding portion of the caisson main body 10, and the engagement is performed. By engaging the convex portion 20a with the engaging concave portion 10d, the mounting base 20 is slidable in the vertical direction on the caisson body 10 so that it can be attached and detached in a stable posture.

  The tidal current power generation apparatus 100 according to the present embodiment can be installed and operated as follows, for example. First, on the ground, an integral body of the caisson main body 10, the front tide receiving part 15 and the rear tide receiving part 16 is formed of concrete or the like. The front door 13 and the rear door 14 which are separately molded are attached to this, and the mounting base 20 to which the rotating member R (water turbine 1) is further attached is assembled to the caisson body 10 and the transmission mechanism 50 is assembled to the tidal current power generation device 100. Configure.

  Next, the tidal current power generation device 100 thus configured is loaded on a barge S or the like, transported over the sea, and 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 100 is lowered by its own weight and installed on the seabed G. The direction of the tidal power generation device 100 on the sea floor G can be set by operating a large elevator so that the tidal current F smoothly enters the caisson body 10. Prior to power generation, the front door 13 and the rear door 14 are pulled up and left open.

  In addition, by installing a strong net at the front end and rear end of the caisson main body 10 or the front end of the front tide receiving part 15 and the rear end of the rear tide receiving part 16, floating dust, timber, etc. It is possible to prevent the caisson body 10 from entering and colliding with the water wheel 1. Moreover, it is possible to prevent parts such as the damaged water turbine 1 from flowing out.

  Thus, the tidal current F flows into the caisson main body 10 of the tidal current power generation device 100 placed on the seabed G, and the water turbine 1 is rotated by the energy. At this time, the function of the front tide receiving portion 15 can send more tide to the inside of the caisson body 10 as compared with the case where it is not provided. Thereby, the tidal current in the caisson main body 10 can be made stronger, and the water turbine 1 can be rotated more effectively.

  The rotational force of the water turbine 1 is transmitted to the generator 40 via the transmission mechanism 50, and electricity is generated by the generator 40. The generated electricity is stored in the charger 60. The charger 60 in which electricity is stored is periodically transported to the ground for use. Instead of providing the charger 60 or together with it, it is also possible to connect an electric wire to the generator 40 and send electricity directly to the ground.

  Further, the direction of the tidal current F periodically changes depending on the tides and the like, and the caisson body 10 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 10a of the caisson body 10 toward the rear end opening 10b, and conversely, when the tidal current F is from right to left, the rear end opening 10b. To the front end opening 10a. Thereby, it is possible to generate electricity by rotating the water turbine 1 almost continuously.

  When repairing or replacing the water turbine 1 of the tidal current power generation apparatus 100, the front door 13 is lowered by the crane 30 to close the front end opening 10a, and the rear door 14 is lowered by the crane 30 to close the rear end opening 10b. As a result, the generation of the tidal current F inside the caisson body 10 is blocked (or weakened). In this state, the mounting base 20 is pulled up to a barge S or a work table (not shown) using the crane 30, and parts such as the water turbine 1 are repaired or replaced on the barge S or the work table (FIG. 8). And FIG. 9). When the mounting base 20 is pulled up, the generator 40 positioned immediately above is moved by moving the mounting table 17 to avoid interference with the mounting base 20 (see FIG. 8).

  In this way, the repair or replacement of the parts is performed at sea by lifting the mounting base 20, so that the repair and replacement work can be easily performed. Therefore, maintenance of the tidal current power generation apparatus 100 is extremely easy.

  After the repair of the parts or the like is completed, the water wheel 1 or the like is attached to the attachment base 20, and then the attachment base 20 is submerged in the sea using the crane 30 and attached to the caisson main body 10 again. At this time, the mounting base 20 is lowered in a state where the engaging convex portion 20 a is inserted into the engaging concave portion 10 d of the caisson main body 10. Thereafter, the front door 13 and the rear door 14 are pulled up by the crane 30 to open the front end opening 10 a and the rear end opening 10 b of the caisson body 10, and the tidal current F is received in the caisson body 10. Thereby, the water turbine 1 is rotated again to generate power.

  Note that another rotating member R such as the propeller 2 can be used instead of the water turbine 1. When the propeller 2 is used, the propeller shaft 2a is rotatably attached to the mounting base 20 in the front-rear direction, and one or more propellers 2 are fixed to the propeller shaft 2a (see FIG. 7). The propeller shaft 2a is meshed with a first horizontal rotation shaft 2b having a plurality of bevel gears B fixed thereto, and the first horizontal rotation shaft 2b is meshed with a second horizontal rotation shaft 2c having bevel gears B fixed at both ends thereof. Then, the second horizontal rotation shaft 2 c is engaged with the vertical rotation shaft 51 of the transmission mechanism 50. Thereby, the propeller 2 is rotated by the tidal current F, and the rotational force is transmitted from the propeller shaft 2a to the generator 40 via the first horizontal rotating shaft 2b, the second horizontal rotating shaft 2c and the transmission mechanism 50 (vertical rotating shaft 51). Tell the power generation.

The tidal current power generation apparatus 100 according to the present embodiment exhibits the following operational effects.
(1) Since the front tidal current receiving portion 15 and the rear tidal current receiving portion 16 are provided, the tidal current can be effectively sent into the caisson body 10 and the water turbine 1 can be rotated efficiently. Thereby, power generation efficiency can be improved.

  (2) When repairing and exchanging parts such as the water turbine 1, the mounting base 20 to which they are attached can be lifted by the crane 30 and carried out at sea, or the front door 13 and the rear door 14 can be opened and emptied. The caisson body 10 that has become a dock can be used for repair or replacement. It depends on the degree of failure. Therefore, maintenance of the tidal current power generation apparatus 100 is easy.

  (3) When attaching / detaching the mounting base 20 to / from the caisson main body 10, the front door 13 and the rear door 14 are attached to the front end opening 10a and the rear end opening 10b to block (or weaken) the tide flow inside the caisson main body 10. Therefore, the attachment base 20 can be easily attached and detached. Therefore, the maintenance of the tidal current power generation apparatus 100 can be further facilitated.

  (4) The caisson body 10 is structurally stable because it has a front groove shape composed of a bottom wall 11 and a pair of side walls 12. Therefore, it can be easily installed on the seabed G in a stable posture.

  (5) Since the tidal current power generation device 100 is assembled almost on land, it is transported to the sea, and is sunk under its own weight on the seabed G using a large elevator, so that assembly work on the seabed 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.

  (6) Since electricity generated by the generator 40 can be stored in the charger 60 and the capacitor 60 can be transported to the ground and used, 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.

  (7) Since the attachment base 20, the front door 13, and the rear door 14 can be attached to and detached from the caisson main body 10 only by the crane 30, facilities required for attaching and detaching them can be simplified. Therefore, the structure of the tidal current power generation apparatus 100 can be simplified.

100 tidal current power generator 1 turbine (rotating member)
DESCRIPTION OF SYMBOLS 1a Water axle 1c Cover part 2 Propeller (rotating member)
2a Propeller shaft 2b First horizontal rotation shaft 2c Second horizontal rotation shaft 10 Caisson body 10a Front end opening 10b Rear end opening 10c Upper end opening 10d Engaging recess 11 Bottom wall
DESCRIPTION OF SYMBOLS 12 Side wall 13 Front door 14 Rear door 15 Front tide receiving part 16 Rear tide receiving part 17 Mounting stand 20 Mounting base 20a Engaging convex part 30 Crane 31 Hoist 32 Beam 40 Generator 41 Rotating shaft 42 Speed increaser 50 Transmission mechanism 51 Vertical rotating shaft 60 Charger 70 Drainage equipment 71 Drainage pipe 72 Drainage pump B Bevel gear C Coupling F Tidal current G Submarine R Rotating member S Barge W Sea surface

Claims (3)

A tidal current power generation device that generates power using the kinetic energy of a tidal current (F),
A groove shape in which a pair of side walls (12) is erected from both left and right ends of the bottom wall (11), has a front end opening (10a), a rear end opening (10b), and an upper end opening (10c), A caisson body (10) for receiving a tidal current from the front end opening or the rear end opening;
A front tide receiving portion (15) provided in a wide shape from both ends of the front end of the caisson body toward the front, for guiding the tide into the caisson body;
A rear tide receiving portion (16) that is provided in a wide shape toward the rear from both ends of the rear end of the caisson main body and guides the tide into the caisson main body;
A front door (13) that is assembled to the front end of the caisson body so as to be movable up and down, and that opens and closes the front end opening;
A rear door (14) that is assembled to the rear end of the caisson body so as to be movable up and down, and that opens and closes the rear end opening;
An attachment base (20) provided with a rotating member (R) which is attached to and detached from the caisson body through the upper end opening and rotates by a tidal current;
A crane (30) which is erected from the caisson body and has a hoist (31) and a rail (32) for guiding the hoist in the front-rear direction at the sea part;
A generator (40) installed in the offshore part directly above the maritime caisson body,
A tidal current power generation device comprising: a transmission mechanism (50) for transmitting 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),
A groove shape in which a pair of side walls (12) is erected from both left and right ends of the bottom wall (11), has a front end opening (10a), a rear end opening (10b), and an upper end opening (10c), A caisson body (10) for receiving a tidal current from the front end opening or the rear end opening;
A front tide receiving portion (15) provided in a wide shape from both ends of the front end of the caisson body toward the front, for guiding the tide into the caisson body;
A rear tide receiving portion (16) that is provided in a wide shape toward the rear from both ends of the rear end of the caisson main body and guides the tide into the caisson main body;
A front door (13) that is assembled to the front end of the caisson body so as to be movable up and down, and that opens and closes the front end opening;
A rear door (14) that is assembled to the rear end of the caisson body so as to be movable up and down, and that opens and closes the rear end opening;
An attachment base (20) provided with a rotating member (R) which is attached to and detached from the caisson body through the upper end opening and rotates by a tidal current;
A crane (30) which is erected from the caisson body and has a hoist (31) and a rail (32) for guiding the hoist in the front-rear direction at the sea part;
A generator (40) provided in a maritime portion directly above the caisson body;
A transmission mechanism (50) 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 turbine (1) or a propeller (2).   The rotating member (R) is a water turbine (1), and a substantially upper half portion or a substantially lower half portion of the water wheel is covered with a cover portion (1c) for blocking a tidal current (F). The tidal current power generation device according to 1 or 2.

Images