JP2009228462A - Hydraulic turbine and wave energy-using device with hydraulic turbine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hydraulic turbine capable of using hydraulic power especially effectively. <P>SOLUTION: The hydraulic turbine 16 includes a rotating section 160 rotating by receiving water, and rotation supporting sections 230, 231 supporting the rotating section 160 freely rotatably. The rotating section 160 includes a plurality of blades 162 extended in a propeller shape from around the center of rotation, and a cylindrical surrounding section 161 connecting the front ends of the blades 162 in a surrounding manner. The rotation supporting sections 230, 231 are provided with a cylindrical upstream supporting section 230 supporting the circumference of the surrounding section 161 on the side for the rotating section 160 to receive water, and a cylindrical downstream supporting section 231 supporting the circumference of the surrounding section 161 on the flow-out side of the received water. The upstream supporting section 230, the surrounding section 161, and the downstream supporting section 231 form a casing shape as a whole. When the blades 162 of the rotating section 160 receive the water, the rotating section 160 supported by the upstream supporting section 230 and the downstream supporting section 231 is rotated. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a water wheel and a wave energy utilization device including the water wheel, and has an inclined surface that is inclined upward from a peripheral edge that is below the water surface when floated on the water surface toward the central portion, and has an opening in the central portion. A main body having a concentrator for converging waves, which is erected radially from the central portion of the main body toward the periphery on the inclined surface, and floats the main body on the water surface. The present invention relates to a device that rotates water turbines using water that enters from the opening of the water and feeds water and generates power by rotating the water turbines.

  Traditionally, global warming and various destruction of the global environment have been screamed, but these problems have become increasingly serious in recent years. These are also closely related to the problem of carbon dioxide emissions from the use of fossil energy resources. The fossil energy resources have quantitative problems such as exhaustion. While energy and resource conservation are screamed for these problems, the early introduction and early commercialization of clean natural energy has become a global issue.

  In addition, the supply of electrical energy by nuclear power generation is being carried out. Problems related to the use of nuclear power include radioactivity leakage accidents that can occur due to aging of nuclear reactors such as nuclear power plants, earthquakes, natural disasters, and human disasters. There is. As is well known, radioactivity has a great negative impact on the ecological environment, and when a radioactivity leakage accident occurs, there is a significant negative impact on the living environment of local residents, and the damage may be serious.

  In addition, 71% of the earth's surface area is the sea, making it possible to live on uninhabited islands where people can't live, such as the Senkaku Islands, Okinotorishima, Takeshima, and the Ogasawara Islands. In order to increase the possibility of transportation of oil and other resources on remote islands, energy resources saving, tourism, improvement of islanders' lives by expanding tourism, fisheries, etc. In order to achieve decentralization and the like, an apparatus that efficiently and effectively uses wave energy resources is desired.

  Furthermore, in Japan, which is surrounded by the sea on all sides, aquaculture industry such as seafood is prosperous, but in order to increase production, problems such as contamination of seawater and lack of oxygen due to good seawater exchange at the farm Need to be resolved. To that end, aquaculture facilities must be installed offshore deep in the water, but in such waters, there are risks associated with large waves. Therefore, as in the case of safe bays and harbors, there is a development of a device that can dissipate in the open sea and can exchange seawater without using any power, or a device that can generate electricity on it. It has been desired so far.

  Examples of such a device include a water circulation device disclosed in Patent Literature 1 and Patent Literature 2. These water circulation devices have put the practical use of wave power using floating dredging.

JP 2001-29988 A JP 2006-283648 A

  However, although the apparatus described in Patent Document 1 has a large amount of water supply, it is difficult to improve long-distance water supply and flow velocity in the water supply pipe because the pump head is low. For this reason, in order to feed a constant amount of water over a long distance, the diameter of the water pipe must be increased and the flow rate must be reduced. However, the use of a water pipe with a large pipe diameter has a problem that the material cost and the laying cost increase. However, in order to operate economically efficiently, a major problem has arisen that the manufacturing cost and the maintenance cost must be lowered to increase the cost-effectiveness ratio.

  In addition, in the apparatus described in Patent Document 2, although paints, coating electrical processing technology, and the like have been developed in recent years, there are many intrusions of foreign matter such as deposits in seawater, seaweed, sand, gravel, shells, etc. during a large wave. There was also a problem that could reduce the efficiency of the water turbine.

  The present invention pays attention to such problems of the conventional technology, and provides a water turbine that can utilize hydraulic power particularly effectively, and is equipped with the water turbine, which eliminates the need for supplying power and the like. It is an object of the present invention to provide a wave energy utilization device that can effectively use the energy of water, can be relatively easily and efficiently, can raise the head, and can send a large amount of water far away.

The gist of the present invention for achieving the object lies in the inventions of the following items. [1] In a water wheel (16) that rotates by receiving water,
A rotation unit (160) that rotates by receiving water, and a rotation support unit (230, 231) that rotatably supports the rotation unit (160);
The rotating portion (160) includes a plurality of wings (162) extending in a propeller shape from around the center of rotation, and a cylindrical surrounding portion (161) connected so as to surround the tips of the plurality of wings (162). )
The rotation support part (230, 231) flows out from the cylindrical upstream support part (230) that supports the periphery of the surrounding part (161) on the side where the rotation part (160) receives water. A cylindrical downstream support part (231) supporting the peripheral edge of the surrounding part (161) on the side,
The upstream support part (230), the surrounding part (161), and the downstream support part (231) form a casing shape as a whole, and the plurality of wings (162) of the rotating part (160) receive water. When received, the water turbine (16) is characterized in that the rotating part (160) supported by the upstream support part (230) and the downstream support part (231) rotates.

[2] The downstream support portion (231) includes a downstream bearing (26) that receives the surrounding portion (161) in a thrust direction and a radial direction below the surrounding portion (161). [1] The water wheel according to (16).

[3] The upstream support portion (230) includes an upstream bearing (27) that receives the surrounding portion (161) in a thrust direction and a radial direction above the surrounding portion (161). [2] The water wheel according to (16).

[4] A guide portion (31) for guiding the flow of received water is provided inside the upstream support portion (230),
The guide part (31) guides the flow of water in the vicinity of the center in the upstream support part (230) toward the vicinity of the inner wall of the surrounding part (161) of the rotating part (160) to guide the rotating part (160). The water turbine (16) according to [1], [2] or [3], wherein the rotational torque is increased.

[5] The guide part (31) has a plurality of guide feathers (311) extending from the central part in the upstream support part (230) to the surrounding part (161). 311) The water wheel (16) according to [4], wherein the received water guides the received water toward the vicinity of the inner wall of the surrounding part (161).

[6] The guide portion (31) is directed from the central portion (32) through which the rotation shaft (17a, 17b, 17c) of the rotating portion (160) passes to the surrounding portion (161) of the rotating portion (160). A guide member (312) having a guide surface (313) that expands and guides the received water toward the vicinity of the inner wall of the surrounding portion (161) [ 4] or the water wheel (16) according to [5].

[7] The arm portion (90) has an arm portion (90) extending from the inner wall of the downstream support portion (231) to the lower side of the rotation shaft (17a, 17b, 17c) of the rotating portion (160). The water turbine (16) according to any one of [1] to [6], wherein a bearing (91) is provided to receive the rotating shaft (17a, 17b, 17c) of the rotating portion (160).

[8] A main body (10) having an inclined surface (3b) that is inclined upward from the peripheral edge under the water surface (S) toward the center, and having an opening (3a) in the center, and the main body (10 And a converging ridge (11) for converging waves (W), which is erected radially from the central portion toward the peripheral edge on the inclined surface (3b) on the inclined surface (3b). The main body (10) is floated on the water surface (S) so that the central portion comes out on the water surface (S), and water entering from the opening (3a) in the central portion with the movement of the wave (W) In the wave energy utilization device (1) to be used,
A pool (6) provided below the opening (3a) and having a plurality of communication portions (15) communicating with the underwater side, and water for power generation disposed in at least one of the plurality of communication portions (15) A turbine (16a), a generator (12) connected to the power generation water turbine (16a) and driven by rotation of the power generation water turbine (16a), and a water wheel ( 16b) and rotation transmission means (17b, 17c; 18b, 18c; 19) for transmitting the rotation of the water turbine (16b) disposed in the other communication portion (15) to the power generation water turbine (16a). Prepared,
The power generation water turbine (16a) and the water turbine (16b) are the water turbine (16) according to any one of [1] to [7],
The water level of the water that entered the pool (6) from the opening (3a) by going up the inclined surface (3b) partitioned by the convergence bonnet (11) and the water level outside the main body (10) The water wheel (16b) disposed in the other communication portion is rotated by the difference in water level, and the rotation of the water wheel (16b) disposed in the other communication portion is rotated by the rotation transmission means (17b, 17c; 18b, A wave energy utilization device (1) characterized in that the generator turbine (12) is caused to generate power by rotating the generator turbine (16a) through rotation to the generator turbine (16a) through 18c; ).

[9] A main body (10) having an inclined surface (3b) inclined upward from the peripheral edge under the water surface (S) toward the central portion, and having an opening (3a) in the central portion, and the main body (10 And a converging ridge (11) for converging waves (W), which is erected radially from the central portion toward the peripheral edge on the inclined surface (3b) on the inclined surface (3b). The main body (10) is floated on the water surface (S) so that the central portion comes out on the water surface (S), and water entering from the opening (3a) in the central portion with the movement of the wave (W) In the wave energy utilization device (1) to be used,
A pool (6) provided below the opening (3a) and having a plurality of communicating portions (15) communicating with the underwater side, and a pump turbine disposed in at least one of the plurality of communicating portions (15) (16c), the water turbine (16b) disposed in the other communication section (15), and the rotation of the water turbine (16b) disposed in the other communication section (15) to the pump turbine (16c). Rotation transmitting means (17b, 17c; 18b, 18c; 19) for transmitting,
The pump turbine (16c) and the turbine (16b) are the turbine (16) according to any one of [1] to [7],
The water level of the water that entered the pool (6) from the opening (3a) by going up the inclined surface (3b) partitioned by the convergence bonnet (11) and the water level outside the main body (10) The water wheel (16b) disposed in the other communication part (15) is rotated by the difference in water level, and the rotation of the water wheel (16b) disposed in the other communication part (15) is transmitted to the rotation transmission means ( 17b, 17c; 18b, 18c; 19) is transmitted to the pump turbine (16c), and the pump turbine (16c) is rotated to feed water in the pool (6). Wave energy utilization device (1).

[10] An on-off valve (14) that can be opened and closed in a flow path of the water obtained by rotating the rotating portion (160) of the water wheel (16) is provided downstream of the water wheel (16) [8] Or the wave energy utilization apparatus (1) as described in [9].

[11] A main body (10) having an inclined surface (3b) inclined upward from the peripheral edge under the water surface (s) toward the central portion, and having an opening (3a) in the central portion, and the main body (10 And a converging ridge (11) for converging waves (W), which is erected radially from the central portion toward the peripheral edge on the inclined surface (3b) on the inclined surface (3b). The main body (10) is floated on the water surface (S) so that the central portion comes out on the water surface (S), and water entering from the opening (3a) in the central portion with the movement of the wave (W) In the wave energy utilization device (1) to be used,
A pool (6) provided below the opening (3a) and having a communication part (15) communicating with the underwater side, a water turbine for power generation (16a) disposed in the communication part (15), and the power generation A generator (12) connected to the water turbine (16a) and driven by the rotation of the power turbine (16a),
The power generation water turbine (16a) is the water turbine (16) according to any one of [1] to [7],
The water level of the water that entered the pool (6) from the opening (3a) by going up the inclined surface (3b) partitioned by the convergence bonnet (11) and the water level outside the main body (10) The wave energy utilization device (1) is characterized in that the generator turbine (16a) is rotated by the difference in water level to cause the generator (12) to generate power.

The present invention operates as follows.
The water that has entered the water turbine (16) from the upstream support portion (230) of the water turbine (16) pushes the wing (162) of the rotating portion (160) and is fixed to the rotating shafts (17a, 17b, 17c). The part (160) is rotated. At this time, the rotating part (160) is supported by the upstream support part (230) at the periphery of the surrounding part (161) on the side receiving water, and is supported downstream by the periphery of the surrounding part (161) on the side from which the received water flows out. It slides and rotates while being supported by the part (231).

  The downstream support portion (231) is provided with a downstream bearing (26) that receives the surrounding portion (161) in the thrust direction and the radial direction, and the upstream support portion (230) is provided with the surrounding portion (161) in the thrust direction and the radial direction. By providing the upstream bearing (27) receiving in the direction and providing the collar (33) for each, the rotating part (160) can be rotated more smoothly.

  When the guide part (31) for guiding the flow of received water is provided inside the upstream support part (230), the water flow near the center in the upstream support part (230) is allowed to flow in the surrounding part (161). Directed near the inner wall. In the case where the guide portion (31) is a plurality of guide wings (311), the rotation speed is increased and the rotation torque is increased by applying water flow pressure from an appropriate angle to the wing (162) of the rotation portion (160). can do.

  Further, the guide extends from the center portion (32) through which the rotation shaft (17a, 17b, 17c) of the rotating portion (160) passes through the guide portion (31) toward the surrounding portion (161) of the rotating portion (160). Also as the guide member (312) having the surface (313), the flow of water near the center in the upstream support portion (230) can be directed to the vicinity of the inner wall of the surrounding portion (161).

Next, the operation of the wave energy utilization device (1) provided with the water wheel (16) will be described.
In the wave energy utilization device (1), the main body (10) is moored from the water bottom (SG) such as the sea bottom by the mooring chain (2) of the mooring device, and is suspended on the water surface (S). The wave (W) approaching the wave energy utilization device (1) rides on the inclined surface (3b) of the inclined portion (3) delimited by the converging dam (11), and the central portion of the main body (10). Proceed toward. Since the interval between the adjacent converging ridges (11) is narrowed toward the center, the wave (W) is converged by the converging ridge (11) as it approaches the center, and the wave height increases. The wave (W) falls into the pool (6) from the opening (3a) when the wave height becomes the largest.

  The water that has entered the pool (6) flows into the bottom of the pool (6) due to the difference in water level between the water level rising on the inclined surface (3b) of the inclined portion (3) and the water level outside the main body (10). The power generation water turbine (16a) and the driving water turbine (16b) disposed in the communication portion (15) provided in 8) are rotated. In the case where a pump turbine (16c) for water supply is provided, the pump turbine (16c) is rotated.

  A water discharge hose (13a) that hangs down toward the water bottom (SG) is provided below the power generation water turbine (16a) provided at the predetermined communication portion (15), and below the pump water turbine (16c). A water supply hose (13c) that hangs down toward the water bottom (SG) is provided. A water discharge hose (13b) that hangs down toward the water bottom (SG) is provided below the driving water wheel (16b) provided in the other communication section (15).

  Between the power generation water turbine (16a) and the water discharge hose (13a), between the pump water wheel (16c) and the water supply hose (13c) and between the drive water wheel (16b) and the water discharge hose (13b), water flows. An on-off valve (14) for opening and closing the path is provided. These on-off valves (14) are opened and closed depending on the operating conditions.

  When the water that has entered the pool (6) through the opening (3a) enters the upstream support portion (230) of the power generation turbine (16a), the rotation portion (160) rotates to pass through the power generation turbine (16a). The water is discharged into the water through the water discharge hose (13a). Similarly, the water that has entered the upstream support part (230) of the driving water turbine (16b) rotates the rotating part (160), passes through the driving water wheel (16b), and passes through the water discharge hose (13b). To be discharged. When water passes through the driving water wheel (16b), the driving water wheel (16b) rotates.

  The generating turbine (16a) and the driving turbine (16b) generate a larger rotational speed and rotational torque by providing the guide portion (31) in the upstream support portion (230) above the rotating portion (160). Can be made. In particular, in a device where water enters the upstream support portion (230) of the power generation turbine (16a) or the driving turbine (16b) with a low drop, it is very effective to provide the guide portion (31).

  When the driving water wheel (16b) rotates, the rotating shaft (17b) extending upward from the driving water wheel (16b) rotates, so the pulley (18b) attached to the upper portion of the rotating shaft (17b). ) Also rotates. Similarly, the pulley (18c) attached to the upper part of the rotating shaft (17c) of the pump turbine (16c) is connected to the pulley (18b) on the drive turbine (16b) side by the belt (19). The rotation of the driving water turbine (16b) is transmitted to the pump water turbine (16c). As a result, the pump turbine (16c) can be rotated and further powered up.

  The pump turbine (16c) is also rotated by the water that has entered the pump turbine (16c) itself, but is actively rotated by the rotational force transmitted from each driving turbine (16b), and the water in the pool (6) is rotated. Can be sent out. Since the water sent out by rotating the pump turbine (16c) is sent out through the water supply hose (13c), the water can be supplied to the desired point by extending the water supply hose (13c) to the desired point. it can.

Similarly, the rotation of the driving water turbine (16b) may be transmitted to the power generation water turbine (16a) to rotate the rotating portion (160) of the power generation water turbine (16a).
Further, the power generation amount and the pump turbine (16c) can be increased by individually opening or closing the open valve (14) provided below the power generation turbine (16a) and each driving turbine (16b). Can adjust the water supply capacity.

  Moreover, although it is desirable to arrange | position the pump turbine (16c) in the deepest place of the bottom part (8) of a pool (6), you may arrange | position in another place. Moreover, the pump turbine (16c) and the power generation turbine (16a) provided in one wave energy utilization apparatus (1) are not limited to one, and a plurality of pump turbines (16c) may be provided.

  According to the water wheel of the present invention, since the upstream support portion, the rotation portion, and the downstream support portion form a substantially integrated casing shape, water entering from the upstream support portion side flows to the rotation portion without leakage and rotates. The part can be rotated, and electric power can be generated by this rotation or high-lift water can be sent out, so that the energy of water can be used efficiently. It is particularly suitable for using wave energy without using other power sources in water areas with waves.

  In addition, since the upstream support part, the rotating part, and the downstream support part form a substantially integrated casing shape, the deposits in the water, sand, gravel, shells, etc. are formed between the rotating part, the upstream support part, and the downstream support part. It is difficult to enter the rotating / sliding portion, so that there are few failures and maintenance is easy.

  According to the wave energy utilization device according to the present invention, the water for power generation comprising the water turbine is based on the water level difference between the water level outside the main body floating on the water surface and the water level entering the pool through the opening at the upper end of the inclined surface of the main body. Since the car and the driving turbine are rotated, the rotational force is transmitted to the generator and pump turbine, and the generator and pump turbine are actively rotated to generate power and send water. Thus, it is relatively easy and efficient to increase the head and displace a large amount of water.

  In addition, the rotating part can play the role of a flywheel by making the cylindrical surrounding part connected so as to surround the tip part of the wing of the rotating part with a material having a large specific gravity such as metal. It is possible to store irregular amounts of energy caused by irregular waves to a certain extent and to make them uniform, thereby converting them into stable electric energy or mechanical power.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.
Each figure shows an embodiment of the present invention.
FIG. 1 is a longitudinal sectional view showing an internal structure of a wave energy utilization device provided with a water wheel according to an embodiment of the present invention, and FIG. 2 omits a part of the wave energy utilization device of FIG. FIG. 3 is a longitudinal sectional view showing the configuration of the water wheel provided in the wave energy utilization device of FIG. 1 and its peripheral members, and FIG. 4 is a schematic view of the upstream support portion and rotation of the water wheel of FIG. FIG. 5 is a plan view showing the inside of the water wheel of FIG. 3.
The wave energy utilization device 1 (hereinafter also simply referred to as the device 1) is installed so as to float in a water area where waves are generated, and converts the wave energy to use or quench the wave.

  As shown in FIG. 1, in the wave energy utilization device 1 of the present invention, a main body 10 is moored by a mooring chain 2 from a water bottom SG such as a sea or a lake, and floats on a water surface S. The buoyancy of the main body 10 floating on the water surface S is adjusted so that the center portion protrudes slightly above the water surface S. The main body 10 has a plate-like inclined portion 3 having an inclined surface 3b inclined downward from the center portion, and a lower end side periphery of the inclined portion 3 is configured to be below the water surface.

  As shown in FIG. 2, the planar shape of the entire inclined portion 3 has a substantially uniform polygonal shape, with the peripheral edge on the lower end side being substantially equal in length. The planar shape may be a quadrangle, a circle, an ellipse, or the like.

  An opening 3 a is formed at substantially the center of the wave energy utilization device 1, that is, at the center of the inclined portion 3. Plate-shaped converging ridges 11 are erected radially from the periphery of the opening 3 a on the inclined surface 3 b toward the lower end side periphery of the inclined portion 3 at substantially equal angles. A buoyancy chamber (not shown) is formed inside the converging dam 11. However, this buoyancy chamber is not always necessary.

  A balance floating body B is attached to each end of the converging dam 11 erected on the inclined surface 3 b of the inclined portion 3 at an end portion near the lower end side periphery of the inclined portion 3.

  The balance floating body B is set such that about half of the balance floats out on the water surface S and the other half is submerged under the water surface S. As a result, even if a large wave or the like occurs in the installation water area, the entire apparatus 1 is not easily toppled, and at the same time, it plays the role of a shock absorber in the event of a collision with a ship or the like. The balance floating body B is not always necessary.

  The peripheral edge on the lower end side of the inclined portion 3 is bent to form a side wall 4. The side wall 4 also serves as a weight for improving the swaying property due to waves and the like, and is made of a relatively solid material that can gain weight, such as a thick steel plate or steel material. Since the side wall 4 serves to lower the position of the combined center of gravity of the entire apparatus 1, the stability of the entire apparatus 1 can be maintained.

  A skirt 5 is attached to surround the side wall 4 throughout the apparatus 1. The skirt 5 is composed of a framework assembled in a lattice shape and a mesh-like wire mesh or plastic mesh covering each lattice, and is movable or detachable. The skirt 5 can be lifted upward or removed when the wave energy utilization apparatus 1 is transported.

  The skirt 5 is suspended in the water from the side wall 4 of the main body 10 during operation when it is floating on the water surface S, so that the stability of the main body 10 is improved by suppressing shaking, vibration, inclination, etc. due to waves. Can do. Moreover, since the wave which passes the mesh | network of the skirt 5 can be quenched, the wave-dissipating effect by the whole apparatus 1 etc. can be heightened. As an example of the wave extinction by the apparatus 1, there is a wave extinction formed by repetition of wave convergence, wave action, wave breaking phenomenon and the like that travels up the inclined surface 3b of the inclined portion 3 on the wave coming side.

  Further, since the skirt 5 has a mesh shape, it is possible to prevent the movement of the water particles of the waves from entering the wave energy utilization device 1 and improve the water flow. In addition, in order to improve the stability of the posture of the wave energy utilization device 1, a weight 5b may be provided below the skirt 5.

  Inside the skirt 5 is disposed a pool 6 positioned below an opening 3 a provided at the center of the inclined portion 3 of the main body 10. The pool 6 is formed by a pool side wall 7 extending downward from the vicinity of the periphery of the opening 3a and a bottom 8 of the pool 6 continuing from the pool side wall 7, and is disposed substantially concentrically with the opening 3a. The bottom 8 of the pool 6 is preferably formed in a conical shape that decreases toward the center of the pool 6 to reduce the lifting pressure of the wave coming from below the wave energy utilization device 1.

  A buoyancy chamber 9 surrounding the pool side wall 7 is formed outside the pool side wall 7 of the pool 6. The buoyancy chamber 9 is formed as a space that can be sealed by the pool side wall 7, the lower surface of the inclined portion 3, and the bottom portion 9a. The buoyancy chamber 9 is provided with unillustrated nozzles, vent pipes, pump devices, and apparatus for controlling the rise and fall of the device depending on the size of the waves.

  As described above, the wave energy utilization apparatus 1 includes the “weight” such as the peripheral edge of the inclined portion 3 below the water surface S, the side wall 4, the skirt 5, and the weight 5 b, the balance floating body B provided on the water surface S, and the main body 10. The position of the buoyancy and the center of gravity is calculated from the relationship between the buoyancy chamber 9 provided near the center and relatively close to the water surface S, and the buoyancy chamber located almost on the water surface S in the converging dam 11 Based on the principle of spillage and the principle of stubbornness, the entire device 1 is designed not to tip over.

  The bottom portion 8 of the pool 6 is provided with a communication portion 15 in which through holes are formed at a plurality of locations. One of the communication portions 15 (predetermined communication portion) is provided at the center of the bottom portion 8 of the pool 6. The center of the bottom 8 of the pool 6 is the deepest part of the pool 6. A water supply hose 13 c is attached to the communication portion 15 formed in the center of the bottom portion 8 of the pool 6. The water supply hose 13c is flexible and hangs down from the communication portion 15 and reaches the water bottom SG. The tip of the water supply hose 13c is placed at a desired point where water supply is desired.

  Water discharge hoses 13 a and 13 b are attached to communication portions 15 other than the predetermined communication portion 15. Since the water discharge hoses 13a and 13b incorporate an aggregate such as a suction hose, the water discharge hoses 13a and 13b are relatively less susceptible to the influence of waves outside the apparatus 1. The water discharge hoses 13a and 13b extend from the communication portion 15 so as to be close to the water bottom SG or to be leveled to some extent.

  Inside the pool 6 of the communication portion 15 (predetermined communication portion) drilled in the center of the bottom portion 8 of the pool 6, a water turbine 16 (hereinafter referred to as a pump turbine 16c) for actively feeding water in the pool 6 is provided. .) Is arranged. The water supply hose 13c is attached below the pump turbine 16c.

  The other communication part 15 in the pool 6 is provided with a power generation turbine 16a for generating power and a driving turbine 16b for obtaining a driving force for rotating the pump turbine 16c. The power generation water turbine 16a is provided with a transmission 18a on an upper portion of a rotating shaft 17a thereof, and the generator 12 is connected via the transmission 18a. The rotation of the driving water turbine 16b is transmitted to the pump water turbine 16c as will be described later. The power generation turbine 16a, the driving turbine 16b, and the pump turbine 16c have the same structure except for details. Therefore, the following description will be made with the driving water turbine 16b as a representative. The water discharge hose 13b is attached below the driving water wheel 16b.

  As shown in FIG. 3, the communication portion 15 is a portion that communicates with the underwater side by a through hole A that is drilled in the bottom portion 8 of the pool 6, and the bottom portion 8 of the pool 6 in which the through hole A is drilled is the pool 6. A mounting portion 24 bent to the side is formed.

  On the mounting portion 24, a driving water turbine 16b is disposed via a mounting seat 240 fixed to the mounting portion 24 with a bolt. The driving water turbine 16b includes a cylindrical rotating portion 160 that rotates by receiving water, a cylindrical upstream support portion 230 that supports the rotating portion 160 on both sides, and a cylindrical downstream support portion 231. Become.

  The upstream support unit 230 supports the rotation unit 160 on the side where the rotation unit 160 receives water (above the rotation unit 160 in FIG. 3), and the downstream support unit 231 receives the water received by the rotation unit 160. The rotating part 160 is supported on the side that flows out from (from below the rotating part 160 in FIG. 3). The upstream support portion 230, the rotating portion 160, and the downstream support portion 231 are configured to be a single casing as a whole.

  A downstream support portion 231 is fixed to the attachment portion 24 of the bottom portion 8 of the pool 6. As shown in FIG. 4, the upstream support portion 230 and the downstream support portion 231 are connected to each other on the outer peripheral surface side by a plurality of arms 28.

  As shown in FIG. 3, the rotating portion 160 includes a plurality of propeller-like wings 162 extending outwardly from the periphery of the boss portion 20 disposed concentrically with the center of rotation, and the plurality of propeller-like wings. The front end portion of 162 is formed of a cylindrical surrounding portion 161 joined to the inner wall. The tip of the propeller-shaped wing 162 and the surrounding portion 161 are fixed and integrated by casting, for example, but may be fixed and integrated by welding or bolting.

  The rotating part 160 may be a hard material such as metal or plastic, but the surrounding part 161 is preferably made of a material having a large specific gravity such as metal. When the surrounding portion 161 is made of a material having a large specific gravity, the rotating portion 160 rotates stably due to its inertia when starting to rotate, and thus can serve as a flywheel. As a result, the energy accumulation and the rotational force can be made uniform to some extent even when an irregularly large energy is input by an irregular wave.

  The rotating shaft 17b of the rotating portion 160 of the driving water turbine 16b extends substantially vertically upward through the boss portion 20 inside the propeller-shaped wing 162. The lower end portion of the rotating shaft 17b is fixed to the boss portion 20 by a key 21.

  As shown in FIG. 1, the pulley 18b is being fixed to the upper end part of the rotating shaft 17b. The pulley 18b is connected by a belt 19 and a pulley 18c fixed to a rotary shaft 17c of the pump turbine 16c. Thereby, rotation of the driving water turbine 16b can be transmitted to the pump water turbine 16c, and the pump water turbine 16c can be rotated.

  A downstream bearing 26 that receives the lower portion of the surrounding portion 161 is provided on the downstream support portion 231 disposed below the rotating portion 160. The bearing 26 includes a downstream thrust bearing portion 26a that receives the lower end portion of the surrounding portion 161 in the thrust direction, and a downstream radial bearing portion that extends below the downstream thrust bearing portion 26a and receives the outer surface of the surrounding portion 161 in the radial direction. 26b. The downstream thrust bearing portion 26 a receives a vertical load from the rotating portion 160.

  On the other hand, an upstream bearing 27 that receives the upper portion of the surrounding portion 161 is provided in the upstream support portion 230 disposed above the rotating portion 160. The bearing 27 includes an upstream thrust bearing portion 27a that receives the upper portion of the surrounding portion 161 in the thrust direction, and an upstream radial bearing portion 27b that receives the inner surface of the surrounding portion 161 in the radial direction. The downstream bearing 26 and the upstream bearing 27 are provided with a collar 33 so that the rotating portion 160 can smoothly rotate.

  In order to make it difficult for sand, shells, foreign matters, etc. floating in the water to enter the downstream bearing 26 and the upstream bearing 27 as much as possible while the rotating portion 160 of the driving water turbine 16b is rotating, the downstream thrust bearing portion 26a and the upstream The horizontal surface of each of the thrust bearing portions 27a is made as small as possible, and the outer sides thereof are inclined surfaces 232 and 233 so that these foreign substances are not easily collected. In addition, the vicinity of the upstream radial bearing portion 27b has a structure in which foreign matter and the like are less likely to collect as a shape in which the inner surface of the longitudinal section is straight in the vertical direction as much as possible.

  The upper end of the upstream support 230 is an inlet 29 through which water from the pool 6 enters. The inlet 29 is covered with a net 30. This makes it difficult for seagrass and seafood contained in the water and other objects attached to the driving water wheel 16b to enter. In addition, water that has entered the pool 6 from the opening 3 a when the wave W outside the apparatus 1 has passed over the inclined portion 3 often contains a large amount of bubbles, but these bubbles pass through the net 30. Can disappear to some extent.

  Inside the upstream support portion 230, a guide portion 31 that guides the flow 22 of water entering from the inlet 29 is disposed below the inlet 29 and above the wings 162 of the rotating portion 160. As shown in FIG. 5, the guide portion 31 includes a plurality of guide blades 311 extending radially from the central inner ring 32 through which the rotary shaft 17b passes to the outer outer ring 34, and as shown in FIG. A guide member 312 having a guide surface 313 which is disposed at the upper part of the inner ring 32 and through which the rotary shaft 17b penetrates and which spreads from the rotary shaft 17b side toward the surrounding portion 161 of the lower rotary portion 160; ing. As the guide part 31, only one of the guide wing 311 and the guide member 312 may be used, or both may be provided as illustrated.

  The outer ring 34 is mounted such that its outer surface is in close contact with the inner wall of the inlet 29 of the upstream support portion 230. The guide wing 311 of the guide portion 31 guides the water flow 22 near the center of the upstream support portion 230 toward the vicinity of the inner wall of the surrounding portion 161 of the rotating portion 160 so that the wing 162 of the rotating portion 160 has an efficient angle. Water is applied and water is applied to the vicinity of the joint between the wing 162 and the surrounding portion 161. The guide member 312 also serves as a cover that prevents foreign substances floating in the water from entering a gap between the rotary shaft 17 b penetrating the inner ring 32 and the inner side of the inner ring 32. In FIG. 3, the lower end portion of the guide member 312 is illustrated as extending slightly outside the outer surface of the inner ring 32, but the lower end portion may be extended to the vicinity of the guide wing 311. The guide member 312 can also direct the water flow 22 near the center of the upstream support portion 230 toward the inner wall of the surrounding portion 161 of the rotating portion 160.

  As shown in FIGS. 8 and 9, generally, the flow rate of water flowing in a cylindrical tube is high, and the flow rate at the center of the tube is high, and the flow rate is low because the tube wall has frictional resistance. That is, the energy for rotating the water wheel is smaller in the water flowing near the pipe wall than in the water flowing near the pipe center. Even if a certain amount of water flows in the cylindrical tube, the rotational torque of the water turbine near the tube wall is greater than the amount of water flowing in the center of the tube, according to the rotational torque of the water wheel installed in the cylindrical tube. Torque increases.

  As shown in FIGS. 6 and 7, in the guide portion 31, the space between the guide blades 311 adjacent to each other near the outer ring 34 is wider than the portion close to the inner ring 32, so that water flows easily. . For this reason, the closer to the surrounding portion 161 of the rotating portion 160, the larger the amount of flowing water, and the rotating portion 160 can be efficiently rotated. Further, since the angle of the water guided by the guide wing 311 hits the wing 162 of the rotating unit 160 differs depending on the angle of the guide wing 311, the guided wing 311 hits the wing 162 of the rotating unit 160 at an efficient angle. It is like that. In addition, although this guide wing 311 is equipped with the driving water turbine 16b, a big effect is acquired, You may equip with the power generation water turbine 16a. Moreover, you may equip with the pump turbine 16c.

  In the guide portion 31 illustrated in FIG. 3, the lower end portion of the outer ring 34 reaches the upper end portion of the surrounding portion 161 of the rotating portion 160, and the lower end portion is received by the bearing 27. A rotation shaft 17b of the driving water wheel 16b passes through the inner ring 32 and extends upward.

  The lower end of the rotating shaft 17b is attached to the rotating portion 160 by a nut 35, a split pin 36, and the like. The whole nut 35 and the like are covered with a cover 37.

  The water flow 22 flowing along the rotation shaft 17b by the guide member 312 is made difficult to pass through the inner hole of the inner ring 32. At the same time, the rotation shaft 17b can freely rotate in the inner hole. It is like that. Further, the guide member 312 prevents impurities in the water such as sand and shells from entering the inner hole of the inner ring 32.

  As shown in FIG. 10, the height of the downstream support portion 231 that supports the rotating portion 160 is increased, and the arm portion 90 is extended from the inner wall to a position directly below the rotating shaft 17 b of the rotating portion 160. A bearing 91 that receives the rotating shaft 17b of the rotating portion 160 may be provided in the portion 90.

Next, the operation will be described.
The wave energy utilization device 1 is a floating object floating on the water surface S, and at the same time, the inclined surface 3b of the inclined portion 3 can be said to be a floating reed having the same action as a reed, and is installed in a water area where waves are generated. The The main body 10 of the wave energy utilization device 1 is moored by a mooring chain 2 of a mooring device from a seabed SG such as the seabed. The planar shape of the wave energy utilization device 1 is such that the inclined portion 3 forms a uniform ring-shaped polygon, so that the same operation can be performed regardless of which direction the wave comes from, and almost the same effect can be obtained. . Therefore, when installing the wave energy utilization apparatus 1, it is not necessary to determine a specific installation direction in principle. When water is supplied by the wave energy utilization device 1, the on-off valve 14 disposed between the pump water wheel 16c and the water supply hose 13c and between the driving water wheel 16b and the water discharge hose 13b is appropriately opened. Keep the flow path to the water open. The on-off valve 14 can be opened and closed by a control device (not shown).

  The wave W approaching the wave energy utilization device 1 first hits the balance floating body B or directly rides on the inclined surface 3 b of the inclined portion 3. As described above, the balance floating body B is arranged on the extension line of the converging dam 11 while maintaining a predetermined interval, so that the wave W hitting the balance floating body B is divided and travels on both sides of the balance floating body B, And ride on the inclined surface 3b of the inclined portion 3 partitioned by the converging dam 11.

  The wave W riding on the inclined surface 3 b travels toward the center of the main body 10. Since the interval between the adjacent converging ridges 11 becomes narrower toward the center, the wave W is converged by a phenomenon of converging action that is squeezed by the converging ridge 11 as it approaches the center, and the wave height is high. Become.

  The waves finally wave over the apex of the inclined portion 3 and fall into the pool 6 from the opening 3a while repeating wave convergence, undulation action, wave breaking phenomenon, etc. on the inclined surface 3b of the inclined portion 3 in each ridge. Therefore, there is a time difference at the time of incidence between the wave W entering the inclined surface 3b in front of the floating levee and the wave W entering the adjacent inclined surface 3b with the converging ridge 11 as a boundary with respect to the traveling direction of the wave. At the same time, since the incident angle (refractive angle) of the wave W is different, a time difference occurs during overtopping.

  If the operation of the wave energy utilization device 1 is divided at a certain time and the flow of water between them is seen, a clockwise flow and a counterclockwise flow occur simultaneously with a certain uniform angular velocity so that the hands of the clock rotate. It will enter into the pool 6 by such a phenomenon. Such a phenomenon can be regarded as a smoothed input to some extent.

  As a result, even if a wave is traveling in a certain direction as a whole, like a small island floating in the ocean, there is some direction if you stand in the island and look at the beach of the island itself. , Waves rush to the small island from all around. For example, even on the lower side, which is completely opposite to the traveling direction of the ocean waves, the waves are somewhat small, but from that side, they travel around the small islands and return to the coastline due to phenomena such as return waves. I'll come to you. Using this phenomenon in the apparatus 1 of the present invention, even if the wave is incident from any direction and in any situation, the wave is incident on the inclined surface 3b of the inclined portion 3 efficiently divided by the converging ridge 11. In other words, it is possible to effectively incorporate the waves into the pool 6 and efficiently incorporate the waves that overturn one after another into the pool 6.

  The water that has entered the pool 6 is stored in the communication portion 15 provided in the bottom portion 8 of the pool 6 due to the difference in water level between the water level rising on the inclined surface 3 b of the inclined portion 3 and the water level outside the main body 10. The power generation turbine 16a, the driving turbine 16b, and the pump turbine 16c are rotated. The water for rotating the power generation water turbine 16a, the driving water turbine 16b, and the pump water turbine 16c is seawater and seafood contained in the water by the net 30 provided above the respective water turbines 16a, 16b, 16c, and the water turbine 16a, Objects that clog the rotating part 160 of 16b and 16c are removed.

  The water that rotates the rotating portion 160 of the water turbines 16a and 16b is rectified so that the flow velocity in the vicinity of the inner wall of the surrounding portion 161 increases when passing through the guide portion 31 provided on the upstream side of the rotating portion 160. Rotate 160 efficiently. The water obtained by rotating the rotating part 160 of the power generation water wheel 16a and the driving water wheel 16b passes through the open / close valve 14 and is discharged into the water through the water discharge hoses 13a and 13b.

  The lower portion of the surrounding portion 161 is received by the downstream thrust bearing portion 26a and the downstream radial bearing portion 26b of the downstream bearing 26, and the upper portion is received by the upstream thrust bearing portion 27a and the upstream radial bearing portion 27b of the upstream bearing 27, Furthermore, since the bearings 26a, 26b, 27a, and 27b are provided with a collar 33, the power generation turbine 16a, the driving turbine 16b, and the pump turbine 16c can rotate smoothly.

  When the rotating portion 160 of the driving water wheel 16b rotates, the rotating shaft 17b extending upward from the driving water wheel 16b rotates. Thereby, the pulley 18b attached to the upper part of the rotating shaft 17b rotates. Since the belt 19 is stretched between the pulley 18b of each driving turbine 16b and the pulley 18c of the rotating shaft 17c of the pump turbine 16c having the same configuration, the rotation of each driving turbine 16b is driven by the pump turbine. 16c to be concentrated.

  The pump turbine 16c is also rotated by the water directly entering the pump turbine 16c. However, the rotating portion 160 is actively rotated by the rotational force transmitted from each driving turbine 16b as described above, so that the pool 6 The water inside can be sent out through the water supply hose 13c.

  In this way, the pump turbine 16c actively feeds water by concentrating the rotational force of each driving turbine 16b, so that it is possible to feed water far away and extend the water hose 13c to a desired point. By keeping it, water can be sent to a desired point.

  In order to stop the rotation of the rotating portion 160 of the power generation water turbine 16a, the driving water turbine 16b, and the pump water turbine 16c, the on-off valve 14 provided for each of the water turbines 16a, 16b, 16c may be closed. The water turbines 16a, 16b, and 16c can be operated as necessary by appropriately opening and closing each of the on-off valves 14.

  When the wave is small and the water input into the pool 6 is small, the open / close valves 14 of all the power generation turbines 16a and the driving turbines 16b may be closed. Even in this case, the open / close valve 14 of the pump turbine 16c is kept open so that the pressure water in the pool 6 flows through the gap between the blades 162 of the pump turbine 16c, and the water supply hose 13c is small in terms of power. Through the water. By extending the tip of the water supply hose 13c to a place where water is desired to be supplied, water can be supplied to a desired point. The pump turbine 16c may be configured such that the wings 162 are idle, or a bypass channel that does not receive the resistance of the wings 162 may be provided in the pump turbine 16c. In this case, a check valve is further provided to prevent the water from flowing back to the pool 6.

  The pump turbine 16c is preferably disposed at the bottom 8 at the deepest place of the pool 6, but may be disposed at another location. Moreover, the pump turbine 16c provided in one wave energy utilization apparatus 1 is not restricted to one, You may provide multiple.

  Furthermore, in the illustrated example, the power generation turbine 16a is shown to be driven alone, but the power generation water turbine 16a is connected to the pump turbine 16c and the drive turbine 16b to rotate the pump turbine 16c. The wheel 16a and the driving water wheel 16b may be connected to transmit the rotation of the driving water wheel 16b to the power generation water wheel 16a to generate power.

The above-described water turbine 16 is basically slightly different from the power generation water turbine 16a, the driving water turbine 16b, and the pump water turbine 16c. Except for this difference, the basic configuration is almost the same as the above-described configuration. As described above, when the water turbine 16 is used as the pump turbine 16c, the guide portion 31 is not necessary, but the guide portion 31 may be provided.
In addition, although what was equipped in the wave energy utilization apparatus 1 about the water wheel 16 was demonstrated as a suitable Example, the water wheel 16 can be used widely besides equip | installing in the wave energy utilization apparatus 1. FIG.

It is a longitudinal cross-sectional view of the wave energy utilization apparatus provided with the water turbine which concerns on one embodiment of this invention. It is the top view which abbreviate | omitted a part of wave energy utilization apparatus of FIG. It is sectional drawing which shows the water wheel provided in the wave energy utilization apparatus of FIG. 1, and the structure of the circumference | surroundings. It is a side view which shows the external appearance of the upstream support part and rotation part of the water turbine of FIG. FIG. 4 is a plan view showing guide vanes in the water wheel of FIG. 3. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is a figure which shows the general flow velocity distribution of the water which flows through the inside of a cylindrical tube. It is a figure explaining the width of the passage area of water, and the direction of the flow of water. It is sectional drawing which shows the modification of the water wheel of FIG.

Explanation of symbols

A ... Through-hole B ... Balance floating body S ... Water surface SG ... Water bottom W ... Wave 1 ... Wave energy utilization device 2 ... Mooring chain 3 ... Inclined part 3a ... Opening 3b ... Inclined surface 4 ... Side wall 5 ... Skirt 5b ... Weight 6 ... Pool DESCRIPTION OF SYMBOLS 7 ... Pool side wall 8 ... Pool bottom 9 ... Buoyancy chamber 9a ... Bottom 10 ... Main body 11 ... Converging dam 12 ... Generator 13a ... Water discharge hose 13b ... Water discharge hose 13c ... Water supply hose 14 ... On-off valve 15 ... Communication part 16 ... Water wheel 16a ... Power generation turbine 16b ... Driving turbine 16c ... Pump turbine 17a, 17b, 17c ... Rotating shaft (rotation transmission means)
18a: Transmission 18b, 18c: Pulley (rotation transmission means)
19 ... belt (rotation transmission means)
DESCRIPTION OF SYMBOLS 20 ... Boss part 21 ... Key 22 ... Flow of water 24 ... Mounting part 26 ... Downstream bearing 27 ... Upstream bearing 26a ... Downstream thrust bearing part 26b ... Downstream radial bearing part 27a ... Upstream thrust bearing part 27b ... Upstream radial bearing part 28 ... Arm 29 ... Entrance 30 ... Net 31 ... Guide part 32 ... Inner ring 33 ... Collar 34 ... Outer ring 35 ... Nut 36 ... Split pin 37 ... Cover 90 ... Arm part 91 ... Bearing 160 ... Rotating part 161 ... Surrounding part 162 ... Wings 230 ... Upstream support portion 231 ... Downstream support portion 232 ... Inclined surface 233 ... Inclined surface 240 ... Mounting seat 311 ... Guide blade 312 ... Guide member 313 ... Guide surface

Claims (11)

In a water wheel that rotates in response to water,
A rotating part that receives water and rotates; and a rotation support part that rotatably supports the rotating part,
The rotating part has a plurality of wings extending in a propeller shape from around the center of rotation, and a cylindrical surrounding part connected so as to surround the tip parts of the plurality of wings,
The rotation support portion includes a cylindrical upstream support portion that supports the periphery of the surrounding portion on the side where the rotation portion receives water, and a cylindrical downstream portion that supports the periphery of the surrounding portion on the side from which the received water flows out. And a support part,
The upstream support portion, the surrounding portion, and the downstream support portion form a casing shape as a whole, and when the plurality of wings of the rotating portion receive water, they are supported by the upstream support portion and the downstream support portion. The water wheel is characterized in that the rotating part rotated.   The water turbine according to claim 1, wherein the downstream support portion includes a downstream bearing that receives the surrounding portion in a thrust direction and a radial direction below the surrounding portion.   The water turbine according to claim 2, wherein the upstream support portion has an upstream bearing that receives the surrounding portion in a thrust direction and a radial direction above the surrounding portion. A guide portion for guiding the received water flow is provided inside the upstream support portion,
The guide part increases the rotational torque of the rotating part by guiding the flow of water near the center in the upstream support part toward the inner wall of the surrounding part of the rotating part. The water wheel according to 2 or 3.   The guide portion has a plurality of guide wings extending from a central portion in the upstream support portion to the surrounding portion, and the plurality of guide wings guides the received water toward the vicinity of the inner wall of the surrounding portion. The water wheel according to claim 4.   The guide portion has a guide member having a guide surface that extends from a central portion through which the rotation shaft of the rotation portion passes toward the surrounding portion of the rotation portion, and the guide surface receives the water received by the surrounding portion. The water wheel according to claim 4 or 5, wherein the water wheel is guided toward the vicinity of the inner wall.   7. The bearing according to claim 1, further comprising an arm portion extending from an inner wall of the downstream support portion to a position below a rotation shaft of the rotation portion, and a bearing for receiving the rotation shaft of the rotation portion provided on the arm portion. The water wheel according to any one of the above. A main body having an inclined surface inclined upward from a peripheral edge under the water surface toward the central portion, and an opening in the central portion; and the peripheral edge extending from the central portion to the inclined surface on the inclined surface of the main body And a converging dam for converging the waves, and the body is floated on the surface of the water so that the central part comes out on the water surface. In the wave energy utilization device that uses water entering from
A pool provided below from the opening and having a plurality of communicating portions communicating with the underwater side, a power generation turbine disposed in at least one of the plurality of communicating portions, and coupled to the power generation turbine, A generator driven by the rotation of the power generation water turbine, a water wheel disposed in another communication portion, and a rotation transmission means for transmitting the rotation of the water wheel disposed in the other communication portion to the power generation water wheel. Prepared,
The water turbine for power generation and the water turbine are water turbines according to any one of claims 1 to 7,
A water turbine disposed in the other communicating portion by a difference in water level between the water level entering the pool from the opening after going up the inclined surface divided into the convergence lanterns and the water level outside the main body The rotation of the water wheel disposed in the other communication portion is transmitted to the power generation water wheel via the rotation transmission means to rotate the power generation water wheel to cause the generator to generate power. A wave energy utilization device. A main body having an inclined surface inclined upward from a peripheral edge under the water surface toward the central portion, and an opening in the central portion; and the peripheral edge extending from the central portion to the inclined surface on the inclined surface of the main body And a converging dam for converging the waves, and the body is floated on the surface of the water so that the central part comes out on the water surface. In the wave energy utilization device that uses water entering from
A pool provided below the opening and having a plurality of communication portions communicating with the underwater side, a pump turbine disposed in at least one of the plurality of communication portions, and a water turbine disposed in another communication portion And rotation transmission means for transmitting the rotation of the water turbine disposed in the other communication portion to the pump turbine,
The pump water wheel and the water wheel are water wheels according to any one of claims 1 to 7,
A water turbine disposed in the other communicating portion by a difference in water level between the water level entering the pool from the opening after going up the inclined surface divided into the convergence lanterns and the water level outside the main body And the rotation of the water wheel disposed in the other communication part is transmitted to the pump water wheel via the rotation transmission means to rotate the pump water wheel to feed water in the pool. A wave energy utilization device.   The wave energy utilization apparatus according to claim 8 or 9, further comprising an on-off valve that can be opened and closed in a flow path of water obtained by rotating a rotating portion of the water wheel downstream of the water wheel. A main body having an inclined surface inclined upward from a peripheral edge under the water surface toward the central portion, and an opening in the central portion; and the peripheral edge extending from the central portion to the inclined surface on the inclined surface of the main body And a converging dam for converging the waves, and the body is floated on the surface of the water so that the central part comes out on the water surface. In the wave energy utilization device that uses water entering from
A pool provided below the opening and having a communication part communicating with the underwater side, a water turbine for power generation disposed in the communication part, and connected to the water turbine for power generation and driven by the rotation of the water turbine for power generation A generator,
The power generation water wheel is a water wheel according to any one of claims 1 to 7,
The power generation turbine is rotated by rotating the power generation water turbine according to a water level difference between a water level entering the pool from the opening after going up the inclined surface divided into the convergence lanterns, and a water level outside the main body. A wave energy utilization device characterized by causing a machine to generate electricity.

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