JP5458426B1 - Power generation system - Google Patents

Abstract

A power generation system capable of suppressing foreign matter from accumulating is provided.
A power generation system includes floating bodies a and b that can float on a water surface, the floating bodies 10a and 10b that are spaced apart from each other along a horizontal direction, and the floating bodies 10a and 10b. A propeller 50 provided below the water surface between the connecting portions 20a and 20b and the floating bodies 10a and 10b, and the propeller 50 is rotated by the energy of the flowing water. Between the floating bodies 10a and 10b, including a propeller 50 for transmitting the energy of the generator to the power generation unit 60 and a power generation unit 60 that generates power by being driven by the energy of the flowing water transmitted by the propeller 50. The space portion 13 is provided below the propeller 50, and the space portion 13 for allowing foreign matter contained in running water to pass therethrough is formed. .
[Selection] Figure 1

Description

  The present invention relates to a power generation system.

  2. Description of the Related Art Conventionally, a power generation device that generates power using flowing water energy has been proposed (see, for example, Patent Document 1). For example, such a power generation device includes a pipe for passing running water, a water wheel provided inside the pipe, and a generator connected to the water wheel. And this electric power generation apparatus generates electric power by transmitting the energy of flowing water to a generator by rotating a water wheel with the flowing water which passes through the inside of a pipe, and driving a generator with the transmitted flowing water energy.

JP-A-60-240878

  Here, in the conventional power generator described above, since the vertical cross-sectional shape of the tube is formed in a closed cross-section, it is assumed that foreign matters such as dust contained in running water are likely to accumulate inside the tube. . For this reason, for example, since the flow of flowing water is stagnated by foreign matter accumulated inside the pipe, the energy of the flowing water transmitted to the generator may be reduced as the rotational speed of the turbine is reduced.

  This invention is made | formed in view of the above, Comprising: It aims at providing the electric power generation system which can suppress that a foreign material accumulates.

In order to solve the above-described problems and achieve the object, the power generation system according to claim 1 is a power generation system that converts the energy of running water into electricity through power generation means, at least a part of which is on the water surface. A pair of floating bodies capable of floating, a pair of floating bodies provided at a distance from each other along a horizontal direction, connection means for connecting the pair of floating bodies, and a pair of the floating bodies Rotating means provided at least partially below the water surface between each other, the rotation for rotating the rotating means by the energy of the flowing water, to transmit the energy of the flowing water to the power generating means A space portion provided below the rotating means between the pair of floating bodies, the space portion for allowing foreign matter contained in running water to pass therethrough, Convex part which is a side part of at least one floating body among a pair of floating bodies, and projects a part of the side part on the floating body side adjacent to the one floating body toward the adjacent floating body The length of the portion from the top line of the convex portion in the at least one floating body to the downstream end of the floating body is determined from the top line of the convex portion in the at least one floating body. long comb than the length of the portion leading to the upstream end of the float, the from the downstream end in at least one of the floating bodies, the length of up to the center position in a direction extending from upstream to downstream of said rotating means The length is longer than the length from the upstream end of the at least one floating body to the center position of the rotating means .

Further, the power generation system according to claim 2 is the power generation system according to claim 1 , wherein a top line of the convex portion of the at least one floating body is substantially obliquely inclined with respect to a vertical direction, or The at least one floating body is formed so as to have a substantially curved shape that curves in a substantially convex shape toward the upstream side or the downstream side.

Moreover, the power generation system according to claim 3 is the power generation system according to claim 1 or 2 , wherein the position of the convex portion in the at least one floating body or the shape of the top line in the convex portion can be adjusted. Thus, at least one of the floating bodies is formed.

The power generation system according to claim 4 is the power generation system according to any one of claims 1 to 3 , wherein the height from the upper end of the floating body to the water surface is maintained at a predetermined height. It has a hydrofoil for.

The power generation system according to claim 5 is the power generation system according to claim 4 , wherein a side surface of the side surface of the hydrofoil that receives the resistance of flowing water flowing from upstream to downstream suppresses accumulation of the foreign matter. The hydrofoil is formed so as to be a substantially inclined surface or a substantially curved surface that can be used.

The power generation system according to claim 6 is the power generation system according to any one of claims 1 to 5 , wherein the rotation means includes a rotation shaft and a plurality of blade portions connected to the rotation shaft. The tip of at least a part of the plurality of blades is curved in a substantially arc shape in a direction opposite to the rotation direction of the rotary shaft, so that the side surface has a substantially arc shape. And forming a groove portion having a substantially arc-shaped side surface by curving the portion closer to the rotating shaft than the tip end portion in the at least part in a substantially arc shape in the rotation direction. Thus, the entire side surface shape of the portion from the projecting portion to the groove portion is formed in a substantially S shape, and flowing water flowing from upstream to downstream can flow into the groove portion, and the flowing water that has flowed into the groove portion Before As down the protrusion becomes possible outflow from the groove to form at least a portion of the plurality of blade portions.

According to the power generation system of the first aspect, the space portion is provided below the rotating means between the pair of floating bodies or between the lower part and the bottom of the pair. Since the space part for allowing the contained foreign substances to pass through is formed, it is possible to suppress the accumulation of foreign substances between the pair of floating bodies or between the pair of floating bodies and the bottom from each other to the bottom of the water. Can do. Therefore, for example, it is possible to suppress a decrease in the number of rotations of the rotating unit due to the stagnant flow of the flowing water due to the accumulation of foreign matters, and it is possible to reduce the energy loss of the flowing water transmitted to the power generating unit. .
Further, since the space portion is arranged so that the lower part between the pair of floating bodies is opened between the lower part of the rotating means and the lower part between the pair of floating bodies, the pair of floating bodies It is possible to further suppress the accumulation of foreign matter between the two.
Moreover, it is a side part of at least one floating body among a pair of floating bodies, and a part of the side part on the floating body side adjacent to the one floating body projects toward the adjacent floating body. Since it formed as a convex part, the flow velocity of flowing water can be accelerated between the convex parts of a pair of floating bodies, for example. For this reason, by arranging the rotating means in the vicinity of each other, the number of rotations of the rotating means can be improved, and the power generation amount can be improved.

According to the power generation system of claim 2, the top line of the convex parts of at least a hand of the floating body, a substantially oblique line shape that is oblique to the vertical direction or generally convex toward the upstream side or downstream side to be substantially curved to curved, so to form a floating body of the at least hand, it is possible to vary the water flow rate in accordance with the water depth. Thereby, for example, when there is a space between the surface of the water and the upper part of the rotating means, foreign substances are allowed to pass through the space, or the lower part of the pair of floating bodies is below the rotating means. It is possible to allow foreign matter to pass through the space formed during the period.

According to the power generation system of claim 3, the position of the projections in at least the other hand of the floating body, or as the shape of the definitive top line to the convex portion can be adjusted, the floating body of the at least hand Since it is formed, it is possible to generate power depending on the situation.

According to the power generation system of the fourth aspect , since the hydrofoil for maintaining the height from the upper end of the floating body to the water surface at a predetermined height is provided, it is easy to maintain the space portion. Become.

According to the power generation system of claim 5 , the side surface that receives the resistance of flowing water flowing from upstream to downstream among the side surfaces of the hydrofoil is a substantially inclined surface or a substantially curved surface that can suppress accumulation of foreign matter. As described above, since the hydrofoil is formed, foreign objects are less likely to get entangled with the hydrofoil, so that the function of the hydrofoil can be maintained. For example, when the hydrofoil is provided between a pair of floating bodies, it is possible to suppress the accumulation of foreign matters between the pair of floating bodies, and it is possible to further maintain the power generation amount.

According to the power generation system of claim 6 , the side surface shape is substantially circular by curving the tip portion of at least a part of the plurality of blade portions in a substantially arc shape in a direction opposite to the rotation direction of the rotation shaft. An arc-shaped projecting portion is formed, and a groove portion having a substantially arc-shaped side surface is formed by curving the portion closer to the rotating shaft than the tip portion of the at least part in a substantially arc shape in the rotation direction. By doing so, the entire side surface shape from the protruding portion to the groove portion is formed in a substantially S shape, and flowing water flowing from upstream to downstream can flow into the groove portion, and the flowing water flowing into the groove portion protrudes from the protruding portion. the so as to enable flow out the groove down along, so to form at least a portion of the plurality of blade portions, even if the flowing water flows into the groove of the tip portion of each of the plurality of blade portions, a plurality of these Along with each rotation of the root portion down the projection of the tip portion can be dropped on the water surface smoothly. Therefore, since it becomes difficult for a foreign material to get entangled with each of the plurality of blade portions, it is possible to further suppress the accumulation of the foreign material between the pair of floating bodies.

1 is a perspective view showing a power generation system according to Embodiment 1. FIG. It is a figure which shows an electric power generation system, (a) is a top view, (b) is a front view. It is a perspective view which shows a floating body, (a) is a figure which shows the floating body which concerns on Embodiment 1, (b)-(d) is a figure which shows the modification of the floating body which concerns on Embodiment 1. FIG. is there. It is a side view which shows an electric power generation part. It is a top view which shows a hydrofoil, (a) is a figure which shows the hydrofoil which concerns on Embodiment 1, (b), (c) is a figure which shows the modification of the hydrofoil which concerns on Embodiment 1. is there. It is a figure which shows the electric power generation system which concerns on Embodiment 2, (a) is a top view, (b) is a front view. It is a figure which shows a water wheel, (a) is a side view, (b) is an enlarged view of the area | region A in (a). It is a figure which shows the electric power generation system which concerns on Embodiment 3, (a) is a top view, (b) is a front view. It is a perspective view which shows a propeller, (a) is a figure which shows the propeller which concerns on Embodiment 3, (b) is a figure which shows the modification of the propeller which concerns on Embodiment 3. FIG. FIG. 10 is a front view showing a modification of the power generation system according to Embodiment 3. FIG. 10 is a front view showing a modification of the power generation system according to Embodiment 3. It is a figure which shows the modification of the propeller which concerns on Embodiment 1, (a) is a top view, (b) is a front view. It is a figure which shows the modification of the propeller which concerns on Embodiment 1, (a) is a longitudinal cross-sectional view, (b) is a front view. It is a figure which shows the modification of the water turbine which concerns on Embodiment 2, (a) is a side view, (b) is an enlarged view of the area | region B in (a).

  Embodiments of a power generation system according to the present invention will be described below in detail with reference to the accompanying drawings. However, the present invention is not limited by these embodiments. In addition, although the installation place of the electric power generation system which concerns on each embodiment is arbitrary, installing in a river, a lake, the sea, a waterway, etc. can be considered. Hereinafter, the case where the power generation system is installed in a water channel will be described as an example.

[Embodiment 1]
First, the first embodiment will be described. In this form, the rotating means is a propeller.

(Constitution)
First, the configuration of the power generation system according to Embodiment 1 will be described. 1 is a perspective view showing a power generation system according to Embodiment 1. FIG. 2A and 2B are diagrams showing the power generation system, where FIG. 2A is a plan view and FIG. 2B is a front view. FIG. 3 is a perspective view showing a floating body 10 to be described later, (a) is a diagram showing the floating body 10 according to the first embodiment, and (b) to (d) are floating according to the first embodiment. FIG. 6 is a view showing a modification of the body 10. FIG. 4 is a side view showing a power generation unit 60 described later. In the following description, the X direction in FIG. 1 is the left-right direction of the power generation system, the Y direction in FIG. 1 is the front-rear direction of the power generation system, and the Z direction in FIG. As shown in these drawings, the power generation system 1 includes floating bodies 10a and 10b, connection portions 20a and 20b, hydrofoil blades 30a and 30b, mooring members 40a and 40b, a propeller 50, and a power generation unit 60. (If the floating bodies 10a and 10b do not need to be distinguished from each other, they are collectively referred to as “floating bodies 10.” The connection portions 20a and 20b need to be distinguished from each other. When there is no need to distinguish between the hydrofoil blades 30a and 30b, the hydrofoil blades 30a and 30b are collectively referred to as the "hydrofoil blade 30". When there is no need to distinguish between them, they are collectively referred to as “an anchoring member 40”).

(Configuration-floating body)
The floating bodies 10a and 10b are for floating at least a part of the floating bodies 10a and 10b on the water surface. For example, only the member having a floating function and the function of floating with a member having a floating function are provided. It is a concept including a combination of members that do not have. As shown in FIGS. 1, 2 (a), 2 (b), and 3 (a), the floating bodies 10a and 10b are spaced apart from each other along the horizontal direction. More specifically, the floating bodies 10a and 10b are arranged so that the parallel arrangement direction of the floating bodies 10a and 10b is substantially along the X direction. Each of the floating bodies 10 a and 10 b includes a floating body main body 11 and a shape holding bar 12.

  The floating body 11 is a basic structure of the floating body 10 and is formed of, for example, a hollow body in which a gas such as air is sealed. Specifically, the shape of the floating body is formed such that, for example, a part of the floating bodies 10a and 10b can be filled with a gas such as air that can float on the water surface. The material of the floating body 11 is preferably formed of an elastic material that can absorb an impact by deformation of the floating body 11. For example, FRP, carbon fiber, foamed resin, rust prevention It is made of a treated foam metal, a material used for a rafting boat (specifically, chlorosulfonated polyethylene, polyvinyl chloride, etc.), a rubber material, or the like.

  The shape holding bar 12 is a shape holding means for holding the shape of the floating body 11, and is a substantially rod-like body formed of, for example, a resin material or a metal material, and is accommodated inside the floating body 11. ing. Details of the floating body 10 will be described later.

(Configuration-connection part)
The connection parts 20a and 20b are connection means for connecting the floating bodies 10a and 10b. As shown in FIGS. 1, 2A, and 2B, each of the connection portions 20a and 20b is a substantially plate-like body formed of, for example, a resin material, a rust-proof metal material, or the like. In addition, each of the connection portions 20a and 20b is disposed so as to straddle the floating bodies 10a and 10b. More specifically, each of these connection portions 20a and 20b is disposed at a position where it abuts on the upper side surface of the floating bodies 10a and 10b. Moreover, this connection part 20a is arrange | positioned upstream from this connection part 20b. And each of these connection parts 20a and 20b is connected with the floating bodies 10a and 10b by the fixture.

(Configuration-hydrofoil)
The hydrofoil blades 30a and 30b are for maintaining the height from the upper ends of the floating bodies 10a and 10b to the water surface at a predetermined height. As shown in FIGS. 1 and 2A, the hydrofoil 30a and 30b are hollow bodies (or solid bodies) formed of, for example, a resin material. In addition, on the side surface of the floating body 10 (at the downstream end of the floating body 10 in the figure), the underwater blades 30a and 30b are arranged so that at least a part of each of the hydrofoil blades 30a and 30b is positioned below the water surface. The wings 30a and 30b are arranged. Each of these hydrofoil blades 30 a and 30 b includes a hydrofoil support 31 and a hydrofoil main body 32. Here, the formation method of the hydrofoil 30 is arbitrary, but the hydrofoil support 31 and the hydrofoil main body 32 may be integrally formed, or may be formed separately.

  The hydrofoil support 31 supports the hydrofoil main body 32 (in FIG. 2A, the part from the downstream end of the floating body 10 to the dotted line is shown). The hydrofoil support body 31 is formed of a substantially rod-like body, and is arranged so that the longitudinal direction of the hydrofoil support body 31 is substantially along the Y direction, with respect to the downstream end of the floating body 10. It is fixed with a fixture.

  The hydrofoil main body 32 is a basic structure of the hydrofoil 30 and receives resistance from flowing water. The hydrofoil main body 32 is formed in a substantially wing shape, is arranged so as to be substantially parallel to the water surface, and is connected to the hydrofoil support 31. Details of the hydrofoil blades 30a and 30b will be described later.

(Configuration-mooring member)
The mooring members 40a and 40b are mooring means for securing the power generation system 1 to the supports 40a and 40b in order to moor the power generation system 1 at a predetermined position. As shown in FIG. 1, the mooring members 40a and 40b are, for example, ropes formed of natural fiber materials or chemical fiber materials, rust-prevented wires, or a combination of these materials. It is formed of a rod-shaped body.

  As for the anchoring member 40a, one end of the anchoring member 40a is fixed to the support body 41a provided on the left bank, and the other end of the anchoring member 40a is fixed to the floating body 10a. Yes. As for the anchoring member 40b, one end of the anchoring member 40b is fixed to the support body 41b provided on the right bank, and the other end of the anchoring member 40b is fixed to the floating body 10b. Yes.

  The fixing position of the floating body 10 in the mooring member 40 is arbitrary, but a fixing position that can reduce fluttering of the floating body 10 and the like is preferable. For example, the fixing position of the floating body 10 in the mooring member 40 and a propeller to be described later The anchoring member 40 may be fixed to the floating body 10 at a position where the position of the 50 shafts 51 in the Z direction is substantially the same.

(Configuration-Propeller)
The propeller 50 is a rotating means for transmitting the energy of the flowing water to the power generation unit 60 when the propeller 50 is rotated by the energy of the flowing water. As shown in FIG. 1, FIG. 2 (a), (b), the propeller 50 is comprised, for example using the well-known propeller. Further, the propeller 50 is disposed between the floating bodies 10a and 10b so that at least a part of the propeller 50 is located below the water surface and the shaft 51 of the propeller 50 is substantially along the Y direction. ing.

(Configuration-power generation unit)
The power generation unit 60 is a power generation unit that generates power by being driven by the energy of running water transmitted by the propeller 50 via the shaft 51 of the propeller 50. As shown in FIGS. 1, 2 (a), 2 (b), and 4, the power generation unit 60 is disposed at a position above the water surface. Further, the power generation unit 60 includes a generator 65 and a power generation board (not shown) inside the casing 61 shown in FIG.

(Configuration-Power generation section-Housing)
The casing 61 is a protection unit that protects the generator 65 and the power generation board from the outside. As shown in FIGS. 1, 2 (a), 2 (b), and 4, the casing 61 is a substantially hollow cylindrical body formed of, for example, a resin material. The housing 61 is a substantially hollow columnar base portion 61a having one side surface (for example, an upper side surface) opened, and includes a base portion 61a that houses a generator 65 and a power generation board, The cover portion 61b is configured to substantially cover the base portion 61a from the open surface side, and the cover portion 61b is fixed to the base portion 61a by a fitting structure, a fixture, or the like.

  The casing 61 is provided with a fixing bar 62, a support portion 63, and a communication port 64.

  The fixing bar 62 is a fixing means for fixing the casing 61 to the floating body 10. The fixing bar 62 is disposed between the housing 61 and the floating body 10 and is fixed to the housing 61 and the floating body 10 with a fixture or the like.

  The support portion 63 is a support means for supporting the shaft 51 of the propeller 50 and accommodating a shaft 66 of the power generation portion 60 described later. The support portion 63 is formed in a substantially long tubular shape. Further, the support portion 63 is arranged so that the longitudinal direction of the support portion 63 is substantially along the Z direction. Further, the support portion 63 is fixed to the housing 61 with a fixture or the like so that the upper end portion of the support portion 63 contacts the housing 61. Further, the support portion 63 is provided with an opening 63a. The opening 63 a is an opening for accommodating the downstream end portion of the shaft 51 of the propeller 50 inside the lower end portion of the support portion 63. As for the method of supporting the shaft 51 of the propeller 50 by the support portion 63, for example, as shown in FIG. The propeller 50 is arranged so as to be accommodated inside the lower end portion. And the method etc. which support the shaft 51 of this propeller 50 with the fixing tools (for example, ball bearing etc.) etc. which can rotate with respect to the support part 63 of the electric power generation part 60 correspond.

  The communication port 64 is an opening for allowing the housing 61 and the support portion 63 to communicate with each other.

(Configuration-Power generation section-Generator)
The generator 65 generates power by being driven by the rotation of the shaft 51 by the propeller 50. The generator 65 is configured using, for example, a known generator, and is fixed to the housing 61 with a fixture or the like.

  The generator 65 is provided with a shaft 66. The shaft 66 is for transmitting the energy of running water transmitted from the shaft 51 of the propeller 50 to the generator 65. The shaft 66 is a substantially elongated rod-like body, and is disposed so as to be accommodated in the support portion 63 via the communication port 64 of the housing 61. Further, the shaft 66 is fixed to the support portion 63 by a fixing tool that can rotate (for example, a ball bearing).

  Here, the method for transmitting the energy of the flowing water from the shaft 51 of the propeller 50 to the shaft 66 of the power generation unit 60 is arbitrary. For example, the first gear ( For example, a bevel gear or the like (not shown) is attached, and a second gear (for example, a bevel gear or the like is omitted) is attached to the lower end portion of the shaft 66 in the power generation unit 60, and the shaft 51 of the propeller 50 is rotated. A method of bringing the first gear and the second gear into contact with each other so that the shaft 66 of the power generation unit 60 can rotate about the central axis in the Z direction of the shaft 66 of the power generation unit 60 is applicable. (In addition, the method of transmitting the energy of the flowing water from the shaft 72 of the water turbine 70 to the shaft 66 of the power generation unit 60 in Embodiment 2 described later, and The same applies to a method for transmitting the flowing water energy from the shaft 85 of the propeller 80 to the shaft 66 of the power generation unit 60 in the third embodiment of predicates).

(Configuration-Power generation section-Power generation board)
The power generation board is a board on which an electric circuit (not shown) for realizing various functions of the power generation unit 60 is mounted. The power generation board is disposed in the vicinity of the generator 65 and is fixed to the housing 61 with a fixture or the like. In addition, an output terminal (not shown) is also mounted on the power generation board. Here, the output terminal is for outputting the current generated by the generator 65 to an external device (not shown), and is electrically connected to the external device via wiring (not shown).

(Details of floating bodies and hydrofoil)
Next, for the details of the configuration, shape, and the like of the floating body 10 and the hydrofoil 30 according to the first embodiment, the following devices are applied.

(Details of floating body and hydrofoil-configuration of floating body)
First, the following configurations are adopted for the configurations of the floating bodies 10a and 10b. Specifically, as shown in FIGS. 1 and 2 (b), a space 13 is formed between the floating bodies 10a and 10b. The space 13 is for allowing foreign matter contained in running water flowing between the floating bodies 10a and 10b to pass therethrough. Here, the “foreign matter” means a solid or semi-solid substance other than water, and is a concept including, for example, garbage, vegetation, gravel, aquatic organisms and the like. The space 13 is arranged such that, for example, the lower part of the floating bodies 10a and 10b is opened between the lower part of the propeller 50 and the lower part of the floating bodies 10a and 10b. The space 13 is disposed.

  With such a configuration, it is possible to suppress the accumulation of foreign matters between the floating bodies 10a and 10b as compared with the conventional power generation apparatus.

(Details of floating body and hydrofoil-shape of floating body)
Moreover, about the shape of the floating bodies 10a and 10b, for example, it is desirable that the floating bodies 10a and 10b are formed in a shape capable of increasing the speed of flowing water in a part between the floating bodies 10a and 10b. Specifically, as shown in FIG. 3A, a part of the side of the floating body 10a on the side of the adjacent floating body 10b is formed in a substantially convex shape that protrudes toward the adjacent floating body 10b. ing. Similarly, a part of the side of the floating body 10b on the side of the adjacent floating body 10a (more specifically, a portion corresponding to the convex portion of the floating body 10a in the floating body 10b) is adjacent to the floating body 10b. It is formed in a substantially convex shape that protrudes toward the floating body 10a.

  In this case, the method of forming the floating body 10 is arbitrary. For example, the shape holding bar 12 of the floating body 10 is substantially the same as the first shape holding bar 12a formed in a substantially rectangular ring shape. In the case of having the second shape holding bar 12b formed in the first, the first shape holding bar 12a is first arranged substantially along the Y direction. Next, the upper bar of the first shape holding bar 12a and the upper end of the second shape holding bar 12b are connected so that the second shape holding bar 12b protrudes toward the adjacent floating body 10. The lower bar of the first shape holding bar 12a is connected to the lower end of the second shape holding bar 12b. Then, the method etc. of accommodating the connected 1st shape holding bar 12a and the 2nd shape holding bar 12b in the floating body 11 correspond. Alternatively, the method is not limited thereto, and a method in which the first shape holding bar 12a and the second shape holding bar 12b are integrally molded may be accommodated in the floating body 11.

  In the first embodiment, as shown in FIG. 3A, the top line 14 of the convex portion of the floating bodies 10a and 10b corresponds to the vertical direction of the floating body 10 (the Z direction in FIG. 3A). The floating bodies 10a and 10b are formed so as to be in a straight line substantially extending along (). However, the present invention is not limited to this. For example, as shown in FIGS. 3B and 3C, the top line 14 of the convex portion of the floating bodies 10a and 10b is set so that the speed of flowing water varies between the floating bodies 10a and 10b depending on the water depth. The floating bodies 10a and 10b may be formed so as to be substantially diagonal with respect to the Z direction. Alternatively, as shown in FIG. 3 (d), the floating body 10a, 10b has a convex portion whose top line 14 has a substantially curved shape that curves in a convex shape toward the upstream side or the downstream side. 10a and 10b may be formed.

  In these cases, the method of forming the floating body 10 is arbitrary. For example, when the top line 14 of the convex portion of the floating body 10 is formed in a substantially oblique line shape, the second shape holding bar 12b. The position of the upper end portion of the second shape retaining bar 12b in the Y direction and the lower end portion of the second shape retaining bar 12b so that the portion corresponding to the top line 14 in FIG. The second shape holding bar 12b is arranged at a position different from the position in the Y direction. And the method etc. of connecting this 2nd shape maintenance bar 12b to the 1st shape maintenance bar 12a correspond. Moreover, when the top line 14 of the convex part in the floating body 10 is formed in a substantially curved shape, the part corresponding to the top line 14 in the second shape holding bar 12b is formed in a substantially curved shape. The second shape holding bar 12b is formed. And the method etc. of connecting this 2nd shape maintenance bar 12b to the 1st shape maintenance bar 12a correspond.

  Moreover, although the floating body 10 shown to Fig.3 (a)-(d) may be replaceable, it is not restricted to this, For example, it may be adjustable according to a condition. Specifically, the floating body 10 may be formed so that the position of the convex portion in the floating body 10 or the shape of the top line 14 in the convex portion can be adjusted. More specifically, the second shape holding bar 12b is detachable so that the position of the convex portion in the floating body 10 can be adjusted by arbitrarily changing the position of the second shape holding bar 12b. You may connect to the 1st shape maintenance bar | burr 12a via the junction part 12c. Alternatively, the second shape retaining bar 12b can be deformed so that the position of the convex portion in the floating body 10 can be adjusted by arbitrarily changing the shape of the second shape retaining bar 12b (for example, publicly known) Or a flexible arm structure).

  Due to the shape of the floating body 10, the flow path width between the projecting portion of the floating body 10 a and the projecting portion of the floating body 10 b between the floating bodies 10 a and 10 b is larger than the flow path width in the other portions. Becomes smaller. For this reason, for example, when the shape of the flow path is rectangular and the flow rate of the flowing water flowing between the floating bodies 10a and 10b and the water level of the flow path are constant, the speed of the flowing water = flow rate / flow path area. (In this case, from the relational expression of channel area = channel width × water depth), between the floating bodies 10a and 10b, the projections of the floating body 10a and the projections of the floating body 10b pass between each other. It is clear that the speed of running water is faster than the speed of running water passing through other parts. Therefore, the rotation speed of the propeller 50 can be improved by arranging the propeller 50 in the vicinity of each other. Further, by forming the top line 14 of the convex portion of the floating body 10 in a substantially oblique line shape or a substantially curved line shape, it is possible to vary the speed of flowing water according to the water depth between the floating bodies 10a and 10b. Become. In addition, by forming the floating body 10 so that the shape of the floating body 10 can be adjusted, power generation can be performed according to the situation.

(Details of floating body and hydrofoil-hydrofoil shape)
FIG. 5 is a plan view showing the hydrofoil 30, (a) is a diagram showing the hydrofoil 30 according to the first embodiment, and (b) and (c) are the hydrofoil 30 according to the first embodiment. FIG. As shown in FIGS. 5A to 5C, the shape of the hydrofoil 30 is such that, for example, the side surface that receives the resistance of flowing water flowing from upstream to downstream among the side surfaces of the hydrofoil 30 accumulates foreign matter. It is desirable that the hydrofoil 30 be formed so as to have a substantially slope or a substantially curved surface that can be suppressed.

  Specifically, as shown in FIG. 5A, the hydrofoil 30 is formed such that the length of the hydrofoil 30 in the X direction becomes longer as it goes downstream. More specifically, when the hydrofoil 30 is provided on the floating body 10, the side surface 33 that receives the resistance of flowing water in the hydrofoil main body 32 (note that the Y direction in the hydrofoil main body 32 shown in FIG. 5A) The side surface along the side 33 is not included in the side surface 33 because the resistance of running water is smaller than that of the side surface 33), but is opposite to the end of the side surface 33 on the hydrofoil support 31 side. The hydrofoil 30 is formed so that the end portion is a substantially inclined surface located downstream of the end portion on the hydrofoil support 31 side of the side surface 33. Or it is not restricted to this, For example, as shown in FIG.5 (b), when the hydrofoil 30 is provided in the floating body 10, the side 33 which receives the resistance of this flowing water is the hydrofoil in the said side 33 Even if the hydrofoil 30 is formed so that the end opposite to the end on the support 31 side is a substantially curved surface located on the downstream side of the end on the hydrofoil support 31 in the side surface 33. Good. In addition, about the installation of the hydrofoil 30, as shown to Fig.5 (a), (b), it is not restricted to the hydrofoil 30 being provided in the floating body 10, For example, as shown in FIG.5 (c). The hydrofoil 30 may be provided in the connection part 20 (more specifically, the hydrofoil 30 is provided in the connection part 20 so that the hydrofoil support 31 is connected to the connection part 20). .

  Such a shape makes it difficult for foreign matter to get entangled in the hydrofoil body 32 of the hydrofoil 30, so that the function of the hydrofoil 30 can be maintained. Further, as shown in FIGS. 5A and 5B, when the hydrofoil 30 is provided between the floating bodies 10a and 10b, it is possible to suppress accumulation of foreign matters between the floating bodies 10a and 10b. It becomes possible.

(About functions of the power generation system)
The function of the power generation system 1 configured as described above will be described. As a function of the power generation system 1, flowing water passes between the floating bodies 10 a and 10 b, so that the power generation function for generating power and the accumulation of foreign substances for preventing foreign substances from accumulating between the floating bodies 10 a and 10 b. It is divided into two functions, the suppression function.

(Power generation system function-Power generation function)
First, the power generation function of the power generation system 1 will be described. As shown in FIG. 1 and FIG. 2 (a), when running water flowing from upstream flows between the floating bodies 10a and 10b, between the convex part of the floating body 10a and the convex part of the floating body 10a. The flow rate of running water is increased. When the flowing water collides with the propeller 50, the propeller 50 rotates by the flowing water energy transmitted by the propeller 50, so that the flowing water energy passes through the shaft 51 of the propeller 50 and the shaft 66 of the power generation unit 60. This is transmitted to the generator 65 of the power generation unit 60. Thereby, it becomes possible to generate electric power by driving the generator 65 by the energy of the flowing water transmitted to the generator 65. The current obtained by the power generation system 1 can be supplied to, for example, lighting installed around the water channel via the power generation board of the power generation unit 60.

(Function of power generation system-Function to suppress foreign matter accumulation)
Next, the foreign matter accumulation suppressing function of the power generation system 1 will be described. As shown in FIGS. 1, 2 (a) and 2 (b), when flowing water flowing from upstream flows between the floating bodies 10 a and 10 b, at least a part of the flowing flowing water is below the propeller 50. From the floating bodies 10a and 10b through the space 13 formed between the floating bodies 10a and 10b. Thereby, it can suppress that a foreign material accumulates between the floating bodies 10a and 10b, for example, can suppress that the rotation speed of the propeller 50 reduces by the flow of flowing water stagnating by accumulation of a foreign material. Is possible.

(effect)
Thus, according to the first embodiment, between the lower part of the propeller 50 and the lower part between the floating bodies 10a and 10b, the lower part between the floating bodies 10a and 10b is opened. Since the space portion 13 is formed, it is possible to suppress the accumulation of foreign matters between the floating bodies 10a and 10b as compared with the conventional power generation apparatus. Therefore, for example, when the flow of flowing water stagnates due to the accumulation of foreign matter, it is possible to suppress the rotation speed of the propeller 50 from being reduced, and it is possible to reduce the energy loss of flowing water transmitted to the power generation unit 60. Become.

  Further, a part of the side of the floating body 10a on the side of the adjacent floating body 10b is formed in a substantially convex shape protruding toward the adjacent floating body 10b, and the side of the floating body 10b on the side of the adjacent floating body 10a. Since a part of the part is formed in a substantially convex shape that protrudes toward the adjacent floating body 10a, the flow velocity of running water can be increased between the convex part of the floating body 10a and the convex part of the floating body 10a. it can. Therefore, by arranging the propeller 50 in the vicinity of each other, the rotation speed of the propeller 50 can be improved, and the power generation amount can be improved.

  In addition, the top line 14 of the convex portion of the floating body 10 is substantially oblique so as to be inclined with respect to the Z direction, or substantially curved so as to be curved substantially convex toward the upstream side or the downstream side. Since the floating bodies 10a and 10b are formed, the speed of running water can be changed according to the water depth. Thereby, for example, when there is a space between the water surface and the upper side of the propeller 50, foreign matter is allowed to pass through the space, or between the floating bodies 10a and 10b from below the propeller 50. It becomes possible to allow foreign matter to pass through the space 13 formed while reaching the lower side.

  Moreover, since the floating bodies 10a and 10d are formed so that the position of the convex portion in the floating body 10 or the shape of the top line 14 in the convex portion can be adjusted, it is possible to generate power depending on the situation. Become.

  In addition, since the hydrofoil 30 is provided to keep the height from the upper end of the floating body 10 to the water surface at a predetermined height, the space 13 can be easily maintained.

  Further, the hydrofoil 30 was formed such that the side surface receiving the resistance of flowing water flowing from upstream to downstream among the side surfaces of the hydrofoil 30 was a substantially inclined surface or a substantially curved surface capable of suppressing the accumulation of foreign matter. Therefore, it is difficult for foreign matter to get entangled with the hydrofoil 30, so that the function of the hydrofoil 30 can be maintained. Moreover, when the hydrofoil 30 is provided between the floating bodies 10a and 10b, it can suppress that a foreign material accumulates between the said each other, and it becomes possible to maintain electric power generation further.

[Embodiment 2]
Next, a second embodiment will be described. In this form, the rotating means is a water wheel. In addition, about the component similar to Embodiment 1, the same code | symbol or name as used in Embodiment 1 is attached | subjected as needed, and the description is abbreviate | omitted.

(Constitution)
First, the configuration of the power generation system according to Embodiment 2 will be described. 6A and 6B are diagrams showing a power generation system according to Embodiment 2, in which FIG. 6A is a plan view and FIG. 6B is a front view. As shown in FIGS. 6A and 6B, the power generation system 101 according to the second embodiment replaces the propeller 50 with respect to the same components as those of the power generation system 1 according to the first embodiment. The water wheel 70 is configured. As for the arrangement of the support part 63 in the power generation part 60, for example, as shown in FIG. 6A, the support part 63 is arranged so that the support part 63 projects toward the floating body 10a. ing. Moreover, about the structure of the floating body 10, the device shown below is given.

(Configuration-about the configuration of the floating body)
The following structures are adopted for the structures of the floating bodies 10a and 10b. Specifically, as illustrated in FIGS. 6A and 6B, each of the floating bodies 10 a and 10 b includes a floating body main body 11 and a water channel wall portion 15.

  The floating body 11 is, for example, a substantially columnar hollow body formed of a material (specifically, a resin material or the like) that allows at least a part of the floating body 11 to float on the water surface (see FIG. 6 ( In a) and (b), a hollow body having a substantially triangular prism, or not limited thereto, a hollow body having a substantially pyramid shape, a hollow body having a substantially spherical shape, a solid body having a substantially columnar shape, and the like may be used.

  The water channel wall portion 15 is a wall portion for forming a water channel between the floating bodies 10a and 10b. The water channel wall portion 15 is a substantially solid body (or a substantially hollow body) formed in, for example, a resin material, a rust-proof metal material, or the like. The water channel wall 15 is disposed below the floating body 11 so that at least a part of the water channel wall 15 is positioned below the water surface.

(Configuration-water wheel)
FIG. 7 is a view showing the water wheel 70, (a) is a side view, and (b) is an enlarged view of a region A in (a). As shown in FIGS. 6A, 6 </ b> B, 7 </ b> A and 7 </ b> B, the turbine 70 rotates the energy of the flowing water to the power generation unit 60 by rotating the turbine 70 with the energy of the flowing water. Rotating means for transmitting. The water turbine 70 is disposed so that a part of the water turbine 70 is located below the water surface between the floating bodies 10a and 10b. The water wheel 70 includes a rotating shaft 71, a shaft 72, and a plurality of blade portions 73.

  The rotating shaft 71 serves as an axis when the water wheel 70 rotates. The rotating shaft 71 is a substantially cylindrical body formed of, for example, a resin material, a rust-proof metal material, or the like. Further, between the floating bodies 10a and 10b, the rotary shaft 71 is disposed at a position where the axial end surface of the rotary shaft 71 faces the water channel wall 15 of the floating bodies 10a and 10b. The rotating shaft 71 is fixed to the floating body 11 of the floating bodies 10a and 10b by a fixture or the like that can rotate via the rotating pin 71a.

  The shaft 72 is for transmitting the energy of running water transmitted from the plurality of blade portions 73 via the rotation shaft 71 to the shaft 66 of the power generation unit 60. The shaft 72 is a substantially elongated rod-like body, and is disposed between the floating bodies 10a and 10b so that the longitudinal direction of the shaft 72 is substantially along the Y direction (in the third embodiment described later). The same applies to the arrangement of the shaft 85 of the propeller 80). More specifically, on the floating body 10 a side between the downstream ends of the shaft 72, the end of the support section 63 on the floating body 10 a side through the opening 63 a of the support section 63 in the power generation section 60. The shaft 72 is arranged so as to be accommodated in the inside of the section. Further, the shaft 72 is fixed by a fixture or the like that can rotate with respect to the support portion 63 of the power generation unit 60. Here, the method of transmitting the energy of running water from the rotating shaft 71 to the shaft 72 is arbitrary. For example, a third gear (for example, a bevel gear or the like, not shown) is provided on the rotating pin 71a of the rotating shaft 71. At the same time, a fourth gear (for example, a bevel gear or the like, not shown) is attached to the upstream end of the shaft 72, and the shaft 72 rotates about the central axis in the Y direction as the rotation pin 71a rotates. For example, a method of bringing the third gear and the fourth gear into contact with each other is applicable.

  The plurality of blade portions 73 are for transmitting the energy of running water to the rotating shaft 71. Each of the plurality of blade portions 73 is a substantially curved plate-like body formed of, for example, a resin material or a metal material. Further, the plurality of blade portions 73 are arranged upright with respect to the curved surface portion of the rotating shaft 71 and are fixed to the rotating shaft 71 by welding, a fixture, or the like.

  Here, although the configuration of each of the plurality of blade portions 73 is arbitrary, for example, it is desirable to adopt a configuration capable of suppressing the accumulation of foreign substances. Specifically, as shown in FIGS. 7A and 7B, the side surface shape of each of the tip portions of the plurality of blade portions 73 curves the portion on the rotating shaft 71 side in the tip portion into a concave shape. The groove portion 73a is formed, and the protruding portion 73b is formed by curving a portion of the tip portion on the opposite side to the rotating shaft 71 side, thereby forming a substantially S-shape. Each of the plurality of blade portions 73 is formed so that running water flowing from upstream to downstream can flow into 73a.

  With such a configuration, even when flowing water flows into the groove 73a at the tip of each of the plurality of blades 73, the protrusion 73b of the tip is connected with the rotation of each of the plurality of blades 73. It can be smoothly dropped onto the water surface, and it becomes possible to make it difficult for foreign matter to get tangled in each of the plurality of blade portions 73.

(Function of power generation system)
The function of the power generation system 101 configured as described above will be described. In addition, about the electric power generation function of the electric power generation system 101 and a foreign material accumulation | storage suppression function, the function is demonstrated only about a different part from Embodiment 1 mentioned above.

(Power generation system function-Power generation function)
First, the power generation function of the power generation system 101 will be described. As shown in FIG. 6A, when the flowing water flowing from the upstream flows between the floating bodies 10a and 10b, and the flowing water collides with some of the plurality of blade portions 73 of the water turbine 70, The rotating shaft 71 of the water turbine 70 is rotated by the energy of the flowing water transmitted by a part of the plurality of blade portions 73. Thereby, the energy of the flowing water transmitted to the rotating shaft 71 is transmitted to the generator 65 of the power generation unit 60 via the shaft 72 of the water turbine 70 and the shaft 66 of the power generation unit 60.

(Function of power generation system-Function to suppress foreign matter accumulation)
Next, the foreign matter accumulation suppressing function of the power generation system 101 will be described. As shown in FIGS. 6A, 6B, 7A, and 7B, the flowing water flowing from the upstream flows between the floating bodies 10a and 10b, and the flowing water flows into the water turbine 70. When it collides with a part of the plurality of blade parts 73, this flowing water flows into the groove part 73 a at the tip of the part of the plurality of blade parts 73. Then, when a part of the plurality of blade portions 73 is rotated in the direction from the upstream to the downstream along with the rotation of the rotation shaft 71 of the water wheel 70, the flowing water flowing into the groove portion 73a is It falls smoothly on the water surface through the protrusion 73b. Thereby, since it becomes difficult for a foreign material to get entangled in the some blade | wing part 73, it becomes possible to suppress further that a foreign material accumulates between the floating bodies 10a and 10b.

(effect)
As described above, according to the second embodiment, the groove 73a is formed by curving the shape of the side surface of the tip portion of at least a part of the plurality of blade portions 73 in a concave shape on the portion of the tip portion on the rotating shaft 71 side. In addition, the protruding portion 73b is formed by curving a portion of the tip portion opposite to the rotating shaft 71 to form a protruding portion 73b, so that the flowing water flows from the upstream to the downstream in the groove 73a. Since at least a part of the plurality of blade portions 73 is formed so as to be able to flow in, even when flowing water flows into the groove portion 73a of the tip portion of each of the plurality of blade portions 73, the plurality of blade portions 73. With each rotation, the protrusion 73b at the tip can be connected and smoothly dropped onto the water surface. Therefore, since it becomes difficult for a foreign material to get entangled in each of the plurality of blade portions 73, it is possible to further suppress the accumulation of the foreign material between the floating bodies 10a and 10b.

[Embodiment 3]
Next, Embodiment 3 will be described. In this form, the rotating means is a propeller different from that of the first embodiment. In addition, about the component similar to Embodiment 2, the same code | symbol or name as used in Embodiment 2 is attached | subjected as needed, and the description is abbreviate | omitted.

(Constitution)
First, the configuration of the power generation system according to Embodiment 3 will be described. FIG. 8 is a diagram illustrating the power generation system according to Embodiment 3, where (a) is a plan view and (b) is a front view. As shown in FIGS. 8A and 8B, the power generation system 201 according to the third embodiment replaces the water turbine 70 with respect to the same components as those of the power generation system 101 according to the second embodiment. The propeller 80 is configured. As for the arrangement of the support part 63 in the power generation part 60, for example, as shown in FIG. 8A, the support part 63 is arranged so that the longitudinal direction of the support part 63 is substantially along the Z direction. Yes.

(Configuration-Propeller)
FIG. 9 is a perspective view showing the propeller 80, (a) is a diagram showing the propeller 80 according to the third embodiment, and (b) is a diagram showing a modification of the propeller according to the third embodiment. . As shown in FIGS. 8A, 8B, and 9A, the propeller 80 is formed of, for example, a resin material (specifically, a hard resin material) or the like, and the floating bodies 10a, 10b. Are arranged such that at least a part of the propeller 80 is located below the water surface. The propeller 80 includes a cylindrical portion 81, a plurality of propeller bodies 82, rotating shafts 83a and 83b, a fixing portion 84, and a shaft 85.

  The cylindrical portion 81 is a support means for supporting the plurality of propeller bodies 82 and the rotation shafts 83a and 83b. The cylindrical portion 81 is formed of a substantially long cylindrical body. The cylindrical portion 81 is arranged so that the longitudinal direction of the cylindrical portion 81 is substantially along the Y direction.

  The plurality of propeller bodies 82 are for transmitting the energy of running water to the rotation shafts 83a and 83b. The plurality of propeller bodies 82 are formed of a substantially twisted plate (more specifically, a rectangular plate). Further, each of the plurality of propeller bodies 82 is arranged upright with respect to the inner peripheral surface of the cylindrical portion 81 so that the longitudinal direction of each of the plurality of propeller bodies 82 is substantially along the Y direction. The plurality of propeller bodies 82 are fixed to the cylindrical portion 81 by welding or the like. The arrangement of the plurality of propeller bodies 82 is not limited to the arrangement shown in FIG. 9A. For example, as shown in FIG. Each of the plurality of propeller bodies 82 may be erected with respect to the outer peripheral surface of the cylindrical portion 81 so as to be embedded on the inner peripheral surface side of the cylindrical portion 81.

  The rotation shafts 83a and 83b serve as shafts when the propeller 80 rotates. Each of the rotating shafts 83a and 83b intersects two substantially U-shaped rod-shaped bodies (specifically, the U-shaped vertical bar portions of the rotating shafts 83a and 83b intersect). The front shape is formed in a substantially cross shape. In addition, the rotation shaft 83a is arranged so that the cross-shaped portion of the rotation shaft 83a faces the upstream end surface of the cylindrical portion 81 and the portion projects toward the upstream side. Further, the rotation shaft 83b is arranged so that the cross-shaped portion of the rotation shaft 83b faces the downstream end face of the cylindrical portion 81 and the portion projects toward the downstream side. The rotating shafts 83a and 83b are fixed to the cylindrical portion 81 by welding or the like.

  The fixing portion 84 is a fixing means for fixing the propeller to the connecting portion 20a (or the connecting portion 20b). The fixing portion 84 is formed of a substantially U-shaped rod-shaped body. The U-shaped vertical bar portion of the fixing portion 84 is substantially along the Y direction, and the U-shaped horizontal bar portion of the fixing portion 84 protrudes toward the bottom of the water. Has been placed. Here, for the connection of the fixing portion 84, for example, the U-shaped vertical bar portion of the fixing portion 84 is connected to the connection portion 20a by a fixing tool or the like. Further, the U-shaped upstream horizontal bar portion of the fixing portion 84 is connected to a crossing portion of the cross-shaped portion of the rotation shaft 83a by a fixing tool (for example, a ball bearing) or the like. . Further, the U-shaped downstream horizontal bar portion of the fixing portion 84 is connected to a crossing portion of the cross-shaped portion of the rotating shaft 83b by a fixing tool (for example, a ball bearing) or the like. .

  The shaft 85 is for transmitting the energy of running water transmitted from the plurality of propeller bodies 82 via the rotation shafts 83 a and 83 b to the shaft 66 of the power generation unit 60. Here, with respect to the connection of the shaft 85, for example, the upstream end of the shaft 85 is connected to the rotating shaft 83b by a fixture or the like. Further, the downstream end portion of the shaft 85 is connected to the support portion 63 of the power generation unit 60 by a rotatable fixture or the like.

(Function of power generation system)
The function of the power generation system 201 configured as described above will be described. In addition, about the electric power generation function of the electric power generation system 201, the function is demonstrated only about a different part from Embodiment 2 mentioned above. Further, description of the foreign matter accumulation suppressing function of the power generation system 201 is omitted.

(Power generation system function-Power generation function)
First, the power generation function of the power generation system 201 will be described. As shown in FIGS. 8A, 8 </ b> B, and 9 </ b> A, flowing water flowing from the upstream flows between the floating bodies 10 a and 10 b, and the flowing flowing water flows into the cylindrical portion 81 of the propeller 80. When it collides with at least a part of the plurality of propeller bodies 82 in the propeller 80 by flowing into the interior of the propeller 80, the rotating shafts 83a, 83b of the propeller 80 are generated by the energy of the flowing water transmitted by at least a part of the plurality of propeller bodies 82. Rotates. And by rotation of these rotating shafts 83a and 83b, the energy of the flowing water transmitted to the rotating shafts 83a and 83b is transmitted to the generator 65 of the power generation unit 60 via the shaft 85 of the propeller 80 and the shaft 66 of the power generation unit 60. Is done.

(effect)
As described above, according to the third embodiment, the space portion 13 is formed below the propeller 80 between the floating bodies 10a and 10b. In comparison, it is possible to suppress the accumulation of foreign matters between the floating bodies 10a and 10b.

[Modifications to Embodiment]
Although the embodiments of the present invention have been described above, the specific configuration and means of the present invention can be arbitrarily modified and improved within the scope of the technical idea of each invention described in the claims. Can do. Hereinafter, such a modification will be described.

(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above-described contents, and the present invention solves the problems not described above or has the effects not described above. There are also cases where only some of the described problems are solved or only some of the described effects are achieved. For example, even if it is difficult to form the space portion 13 between the pair of floating bodies 10, if the formation of the space portion 13 can be achieved in the same manner as before by a technique different from the conventional one, The problems of the invention have been solved.

(Combination of each embodiment)
About the structure shown to the said Embodiment 1-3, the structure of the same embodiment can be combined two or more, and the structure of a different embodiment can mutually be combined. For example, as shown in FIGS. 10, 11 (a), (b), a plurality of propellers 80 of the power generation system 201 according to Embodiment 3 may be combined (note that FIGS. 10, 11 (a), ( For b), the power generation unit 60 and the propeller 80 are not shown). Specifically, as shown in FIG. 10, a plurality of the propellers 80 may be arranged in parallel along the direction in which the floating bodies 10a and 10b are arranged between the floating bodies 10a and 10b (see FIG. 10). 10, each propeller 80 may be isolated by the channel wall 15). Alternatively, as shown in FIG. 11 (a), a plurality of propellers 80 are arranged in parallel along the direction in which the floating bodies 10a and 10b are arranged between the floating bodies 10a and 10b. A plurality of them may be arranged side by side. Alternatively, as shown in FIG. 11B, a plurality of the propellers 80 may be provided in a honeycomb shape between the floating bodies 10a and 10b. Here, as shown in FIGS. 11A and 11B, each propeller 80 is accommodated in the guide case 90. The guide case 90 is a guide means for effectively guiding the flowing water flowing between the floating bodies 10a and 10b to the propeller 80 accommodated therein. The guide case 90 is formed of a substantially elongated cylindrical body whose inner edge shape is substantially the same as the outer edge shape of the cylindrical portion 81 and whose outer edge shape is larger than the outer edge shape of the cylindrical portion 81. The guide case 90 is arranged so that the longitudinal direction thereof is substantially along the Y direction. Further, with respect to the shape of the upstream end face of the guide case 90, for example, the end face is formed in an inclined shape so that the outer edge of the end face protrudes upstream of the inner edge of the end face. With such a configuration, it is possible to further improve the power generation amount. Further, for example, the propeller 50 of the power generation system 1 according to the first embodiment, the water wheel 70 of the power generation system 101 according to the second embodiment, or the propeller 80 of the power generation system 201 according to the third embodiment includes the floating bodies 10a and 10b. May be provided along the Z direction, or may be provided in a honeycomb shape. In the specific example described above, the installation of the guide case 90 may be performed, or the installation may be omitted.

(Correlation between each embodiment)
The features shown in the first to third embodiments may be interchanged with each other, or one feature may be added to the other. For example, the shape of the floating body 10 in the first embodiment (specifically, a substantially convex shape in which a part of the side portion of the floating body 10 on the adjacent floating body 10 side protrudes toward the adjacent floating body 10. Or the top line 14 of the convex portion of the floating bodies 10a and 10b is formed in a substantially oblique line shape or a substantially curved line shape). The shape of the water channel wall portion 15 of the floating body 10 in FIG.

(About the shape of the floating body)
In the first embodiment, the floating bodies 10a and 10b are formed so that the floating bodies 10a and 10b are shaped so that a part of the side of the floating body 10 on the adjacent floating body 10 side is substantially convex. However, the floating bodies 10a and 10b may be formed so that a part of the side part of the floating body 10 on the adjacent floating body 10 side is substantially flat. Alternatively, the floating body 10a may be formed so that only a part of the side of the floating body 10a on the side of the adjacent floating body 10b is substantially flat.

(About the number of connections)
In Embodiments 1 to 3 described above, the power generation system has been described as having two connecting portions 20, but may be, for example, a single unit or three or more units.

(About hydrofoil and mooring member)
In the first to third embodiments, it has been described that the power generation system includes the hydrofoil 30 and the mooring member 40. For example, the hydrofoil 30 and the mooring member 40 may be omitted.

(About the power generation unit)
In the first to third embodiments, it has been described that the power generation unit 60 is provided in the vicinity of the rotating means and the floating bodies 10a and 10b. For example, it may be provided on land or the like. When the power generation unit 60 is provided at a remote position in this way, for example, the power generation system may be provided with energy transmission means for transmitting the rotational energy generated by the rotation means to the power generation unit 60 at a remote position. That's fine. Such energy transmission means can be arbitrarily configured. For example, a drive shaft that is connected to the rotation means and rotates can be employed.

(About arrangement of rotating means)
In the first to third embodiments, it has been described that the rotating means is provided between the floating bodies 10a and 10b. However, for example, the rotating means is provided between the lower parts of the floating bodies 10a and 10b and the bottom of the water. May be. In this case, the space portion 13 is provided below the rotating means between the floating bodies 10a and 10b from the lower side to the bottom of the water.

(Propeller configuration)
In Embodiment 1 described above, the propeller 50 has been described as being configured using a known propeller, but is not limited thereto. For example, a configuration that can prevent foreign matter from being caught between the blade portion of the propeller 50 and the surrounding structure or foreign matter from adhering to the surface of the blade portion may be employed.

  Specifically, the structure shown in FIG. When the propeller 50 is accommodated in the guide case 90 described above, the shaft 51 of the propeller 50 is provided with an opening 52. The opening 52 is an opening for taking in and out a part of the blade portion of the propeller 50. In addition, at the end portion of the blade portion of the propeller 50 on the shaft 51 side, an expandable member 53 and a stopper 54 are provided. The expansion / contraction member 53 is an urging unit that urges the blade portion in a direction away from the shaft 51 (hereinafter referred to as an outward direction), and is formed of an elastic rust-proof spring material (for example, a coil spring). (It is the same for the elastic member 55 described later), and is disposed along the direction from the central axis of the shaft to the blade portion. The stopper 54 restricts the movement of the blade portion of the propeller 50, has a larger area than the opening portion 52, and is fixed to the base portion of the blade portion inside the shaft. With such a configuration, when the shaft rotates in a normal state, the blade portion of the propeller 50 receives the urging force of the expansion and contraction member 53 and moves outward by receiving the centrifugal force due to the rotation. Since the further movement is restricted by contacting the inner surface of 52, the stopper 54 continues to rotate at the position where the stopper 54 contacts the inner surface of the opening 52 in this way. On the other hand, as shown in FIG. 12 (b), when a foreign object is caught between the blade part of the propeller 50 and the guide case 90, the blade part of the propeller 50 approaches the shaft by the foreign object (hereinafter referred to as the inner direction). ) To move inwardly against the urging force and centrifugal force of the expansion / contraction member 53 (in FIG. 12 (b), the one before movement is shown by a solid line, and the one after movement is shown) Shown with imaginary lines). In this state of movement in the inward direction, the space between the blade portion and the guide case 90 is expanded, so that the foreign matter can pass through the space and the foreign matter can flow downstream. it can. And after flowing a foreign material, the blade | wing part of the propeller 50 returns automatically to the normal state with the urging | biasing force of the expansion-contraction member 53, and the centrifugal force by rotation. The elastic member 53 may generate an urging force in the inner direction, or the elastic member 53 may be omitted.

  Or you may employ | adopt the structure shown to Fig.13 (a). In this structure, the blade portion of the propeller 50 is pivotally connected to the shaft 51 at its base portion. An elastic member 55 is provided between the propeller 50 and the shaft 51. The expansion member 55 does not urge the shaft 51 in a state where the blade portion is orthogonal to the shaft 51, but in a state where the tip portion of the blade portion is inclined toward the downstream side, It is an urging means for urging the tip portion in the direction toward the upstream side. With such a configuration, normally, the blade portion of the propeller 50 is in a state of being orthogonal to the shaft 51 by receiving the centrifugal force due to the rotation. On the other hand, as shown in FIG. 13 (b), when foreign matter adheres to the tip of the blade portion of the propeller 50, the blade portion of the propeller 50 is subjected to the biasing force of the expansion / contraction member 55 by the pressure received by the foreign matter by the water flow. On the other hand, the tip portion is inclined by being pressed toward the direction approaching the downstream side, and in this state, the foreign matter is likely to flow toward the downstream side, so the foreign matter is directed downstream. It can flow. And after flowing a foreign material, the blade | wing part of the propeller 50 returns automatically to the normal state with the urging | biasing force of the expansion-contraction member 53, and the centrifugal force by rotation. This structure can be similarly applied to a structure in which the propeller 50 is accommodated in the guide case 90 as shown in FIG. Further, the elastic member 53 may be omitted.

(About the configuration of multiple blades)
In the second embodiment, with respect to the configuration of the plurality of blade portions 73, the side surface shape of each tip portion of the plurality of blade portions 73 is formed in a substantially S shape, and the flowing water flowing from the upstream toward the downstream in the groove portion 73a is formed. Although it has been described that it is formed to be able to flow in, it is not limited to this. For example, as shown in FIGS. 14 (a) and 14 (b), in order to make it easy to receive resistance to running water, the side surface of the tip portion is formed in a substantially hook shape, and the tip portion is directed from upstream to downstream. Each of the plurality of blade portions 73 may be formed so as to easily receive the flowing flowing water. In this case, the thickness of the tip portion may be set larger than the thickness of the portions other than the tip portions of each of the plurality of blade portions 73, for example, in order to increase the strength of the tip portion.

  Moreover, in the said Embodiment 2, although it demonstrated that the structure mentioned above was applied about all the structures of the some blade | wing part 73, for example, even if it applies only to a part of structure of the some blade | wing part 73, Good.

(About the configuration of multiple propeller bodies)
In Embodiment 3 described above, it has been described that the plurality of propeller bodies 82 are formed of a hard resin material, but may be formed of a soft resin material. For example, in order to prevent foreign matter from accumulating on the plurality of propeller bodies 82, at least a part of the plurality of propeller bodies 82 may be formed to be deformable. Specifically, when at least a predetermined force is applied to at least some of the plurality of propeller bodies 82, at least some of the propeller bodies 82 can be deformed so that foreign matter can pass therethrough. It is formed of a flexible material (for example, a flexible resin material or the like) (note that the blade portion of the propeller 50 according to the first embodiment and the plurality of blades in the water turbine 70 according to the second embodiment) The same applies to the configuration of the unit 73).

DESCRIPTION OF SYMBOLS 1, 101, 201 Electric power generation system 10, 10a, 10b Floating body 11 Floating body main body 12 Shape holding bar 12a 1st shape holding bar 12b 2nd shape holding bar 12c Junction part 13 Space part 14 Top line 15 Water channel wall part 20 , 20a, 20b Connection part 30, 30a, 30b Hydrofoil 31 Hydrofoil support 32 Hydrofoil main body 33 Side surface receiving resistance of flowing water 40, 40a, 40b Mooring member 41a, 41b Support 50, 80 Propeller 51, 66, 72 , 85 Shaft 52 Opening 53, 55 Telescopic member 54 Stopper 60 Power generation part 61 Housing 61a Base part 61b Cover part 62 Fixed bar 63 Support part 63a Opening 64 Communication port 65 Generator 70 Turbine wheel 71, 83a, 83b Rotating shaft 71a Rotation Pin 73 Blade portion 73a Groove portion 73b Projection portion 81 Cylindrical portion 82 Lopera body 84 fixed portion 90 induction case

Claims (6)

A power generation system that converts the energy of running water into electricity through power generation means,
A pair of floating bodies, at least a part of which can float on the water surface, and a pair of floating bodies provided at intervals in the horizontal direction;
Connecting means for connecting the pair of floating bodies;
Rotating means provided at least partially below the water surface between the pair of floating bodies, wherein the rotating means is rotated by the energy of the flowing water, whereby the energy of the flowing water is converted into the power generating means. Rotating means for transmitting to the
Between the pair of floating bodies, a space provided below the rotating means, forming a space for allowing foreign matter contained in running water to pass through,
Convex that is a side of at least one floating body of the pair of floating bodies, and a part of the side on the floating body adjacent to the one floating body protrudes toward the adjacent floating body Formed as a part,
The length of the portion of the at least one floating body from the top line of the convex portion to the downstream end of the floating body is determined from the top line of the convex portion of the at least one floating body to the upstream of the floating body. long comb than the length of the portion extending to the end on the side,
The length from the downstream end of the at least one floating body to the central position in the direction from the upstream to the downstream of the rotating means is determined from the upstream end of the at least one floating body from the upstream end. Longer than the length of the rotating means until the center position,
Power generation system. The top line of the convex portion in the at least one floating body has a substantially oblique shape that is oblique to the vertical direction, or a substantially curved shape that curves in a substantially convex shape toward the upstream side or the downstream side, Formed at least one of the floating bodies,
The power generation system according to claim 1. The at least one floating body is formed so that the position of the convex portion in the at least one floating body or the shape of the top line in the convex portion can be adjusted.
The power generation system according to claim 1 or 2.
A hydrofoil for maintaining the height from the upper end of the floating body to the water surface at a predetermined height,
The power generation system according to any one of claims 1 to 3. The hydrofoil is formed such that the side surface receiving the resistance of flowing water flowing from upstream to downstream among the side surfaces of the hydrofoil is a substantially inclined surface or a substantially curved surface capable of suppressing the accumulation of the foreign matter.
The power generation system according to claim 4. The rotating means is a water wheel having a rotating shaft and a plurality of blade portions connected to the rotating shaft,
And forming a protruding portion having a substantially arc-shaped side surface by curving a tip portion of at least a part of the plurality of blade portions in a substantially arc shape in a direction opposite to the rotation direction of the rotation shaft, The protruding portion is formed by forming a groove having a substantially arc-shaped side surface by curving the portion closer to the rotation shaft than the tip end portion in the at least a portion in a substantially arc shape toward the rotation direction. The entire side surface of the portion extending from the groove portion to the groove portion is formed in an approximately S-shape so that flowing water flowing from upstream to downstream can flow into the groove portion, and the flowing water flowing into the groove portion connects the protruding portion. Accordingly, at least a part of the plurality of blade portions is formed so that the groove portion can flow out.
The power generation system according to any one of claims 1 to 5.

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