JP2013032766A - Hydraulic power unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hydraulic power unit capable of constantly imparting a sufficient rotative force to a waterwheel without being affected by the quantity of water of a river, and stably generating electric power even with a small quantity of the water.SOLUTION: The hydraulic power unit includes: an overfall part 20 into which the running water from an upper stage falls intensively; an overfall channel 21 which is continuously located at the lower end of the overfall part 20, and allows falling water to fall to the waterwheel 25; and a discharge channel 36 which continuously extends from the overfall channel 21, and discharges the falling water from the overfall channel 21 downstream. The overfall part 20 includes a water-storage region which is defined by an assumed upper-limit water level and an assumed lower-limit water level. The overfall channel 21 includes a water-volume adjustment plates 41 above the waterwheel 25. By adjusting an opening width of the overfall channel 21 with the water-volume adjustment plates 41, the quantity of the water is kept between the assumed upper-limit water level and the assumed lower-limit water level.

Description

  The present invention relates to an improvement in a hydroelectric power generation apparatus capable of generating electric power by utilizing water flow energy of rivers of various sizes.

  While various hydroelectric generators using river energy are found in patent documents and the like, the present inventor has already proposed a hydroelectric generator according to Utility Model Registration No. 3160002. As shown in FIG. 15, this hydroelectric power generation apparatus 10 is installed continuously on both river banks on the lower riverbed of a natural river with a riverbed with upper and lower steps. In order to flow on the surface and become a water conduit, the ceiling of the device is installed on the same plane as the river bed of the upper river.

  The hydroelectric power generation apparatus 10 is constituted by a falling water section 20, a water wheel 25, a power generation chamber 30, and a falling water guide block wall 35. The falling water section 20 has a falling water path 21 at the center of the bottom, and a falling water slope 22 is formed toward the falling water path 21 in a V shape, more precisely in a reverse C shape. The water wheel 25 is installed under the falling slope 22, receives the falling water from the falling slope 22, rotates, and transmits the rotational motion to the power generation chamber 30.

  The power generation chamber 30 is provided with a doorway for maintenance and the like on the side surface, and is provided continuously with the upstream side of the water falling part 20 and includes a power generation device that transmits the rotational motion of the water turbine 25 to generate power. Further, the falling water guiding block wall 35 guides falling water to the water wheel 25, and is connected to the downstream side of the falling water portion 20, and a water discharge channel 36 communicating with the falling water channel 21 is formed in the lower part thereof. .

  According to the hydroelectric power generation apparatus 10, the entire water flow of the river enters the water falling part 20, and the water flow is concentrated by the water falling slope 22, whereby the water flow is strengthened and carried to the water wheel 25, thereby rotating the water wheel 25. As a result, the energy of the water flow is converted into rotational motion, and the rotational motion of the water turbine 25 rotates the driving wheel (drive wheel) (not shown) disposed on the rotational shaft of the water turbine 25 in the power generation chamber 30. The rotational motion is transmitted to a driving wheel (driven wheel) disposed on a rotating shaft of a generator (not shown) via a rotation transmission belt (not shown), and the generator is operated. Thus, even when the amount of water in the river is small, almost 100% of the water flow can be used for power generation.

  However, although the technique of Patent Document 1 can be used for power generation even when the amount of water is small, it largely depends on the amount of water in the river, and a small amount of water cannot provide sufficient rotational force to the water turbine. It has been found that there is a problem of incurring a decline.

Utility Model Registration No.3160002

  The present invention has been made in view of the problems of the prior art, and is not affected by the amount of water in the river, and always provides sufficient rotational force to the water turbine, so that stable power generation is possible even under a small amount of water. The purpose is to provide a power generator.

  The hydroelectric generator of the present invention is a hydroelectric generator installed at a lower part of a river or irrigation channel having an upper and lower level difference on a river bed, and a falling part that falls while concentrating flowing water from the upper stage side, and the falling water A drainage channel that is connected to the lower end of the unit and drops the falling water onto a water turbine, and a drainage channel that is connected to the drainage channel and discharges the falling water from the drainage channel downstream. The water storage area is defined by an upper limit water level and an assumed lower limit water level, the falling water channel has a water amount adjustment plate having a drive source above the water wheel, and the drive source is configured to level the water amount adjustment plate. The water storage amount of the water storage region is adjusted between an assumed upper limit water level and an assumed lower limit water level by adjusting the opening width of the water drainage channel with the water amount adjustment plate. It is characterized by that.

  In the hydroelectric generator of the present invention, the falling water channel has a water amount adjusting plate on one side or both sides.

  Moreover, in the hydroelectric generator of this invention, the group of a waterfall part, a waterfall channel, and a water discharge channel may be arrange | positioned in parallel in multiple groups river width direction.

  Furthermore, the hydroelectric power generation device of the present invention has a pair of water turbines arranged opposite to each other in a falling water channel, and has a flow dividing plate for dividing the water falling above an intermediate portion of the pair of water turbines arranged opposite to each other in the water falling channel. In addition, a pair of water amount adjusting plates disposed opposite to the flow dividing plate may be provided in the water channel.

  Furthermore, in the hydroelectric generator of this invention, you may make it have a water conduit which is connected with the upper stage side and leads a flowing water to a falling part.

  Furthermore, in the hydroelectric power generation device of the present invention, it is preferable that a dust catching member is disposed on the upper part of the falling water part.

  Furthermore, in the hydraulic power generation device of the present invention, it is preferable that a closing plate for closing the falling portion is disposed above the dust catching member. In that case, the blocking plate may be disposed on one of the river banks, the blocking plate may be disposed on both of the river banks, or the blocking plate may be disposed below the water conduit. When the closing plate is disposed below the water conduit, it is more preferable that the closing plate is doubled.

  Furthermore, in the hydroelectric generator of the present invention, it is preferable that the water amount adjusting plate is a valve.

  Furthermore, in the hydroelectric generator of the present invention, the waterfall has a pair of water turbines arranged opposite to each other, and the waterfall is divided above the pair of waterwheels arranged opposite to each other in the waterfall, so that the divided flow is divided. A valve may be interposed in each of the paths.

  Furthermore, in the hydroelectric generator of the present invention, it is preferable that the valve is an electric valve.

  Furthermore, in the hydroelectric power generation device of the present invention, it is preferable that the width in the direction orthogonal to the river flow in the downfall channel is adjusted so that the drive source of the water amount adjusting plate is disposed within the river width.

  Furthermore, in the hydroelectric generator of the present invention, an upper limit water level sensor that detects an assumed upper limit water level, a lower limit sensor that detects an assumed lower limit water level, and a water amount adjustment plate in response to signals from the upper limit water level sensor and the lower limit sensor. And a computer for controlling the drive source.

  Furthermore, in the hydroelectric generator of the present invention, the driving wheel is disposed on the rotating shaft of the water turbine, and the moving wheel is belted with a driven wheel having a smaller diameter than the driving wheel disposed on the rotating shaft of the generator. Is preferred.

  Furthermore, in the hydroelectric generator of the present invention, the drive source may be manually operable.

  Furthermore, in the hydroelectric generator of the present invention, a fishway having an opening in the water conduit may be attached. In that case, it is preferable that the lower part of the opening on the side of the waterway of the fishway is located below the bottom surface of the waterway.

  Furthermore, in the hydroelectric generator of the present invention, a water intake channel having an opening in the water conduit may be attached. In that case, it is preferable that the lower part of the opening on the water conduit side of the intake channel is located below the bottom surface of the water conduit.

  Since the present invention is configured as described above, it is possible to obtain an excellent effect that stable power generation can be achieved even when the amount of water is small by utilizing a head of a river having a step or a water channel.

1 is a schematic diagram of a hydroelectric generator according to Embodiment 1 of the present invention. It is the schematic of the modification of the embodiment. It is the schematic of the hydraulic power unit which concerns on Embodiment 2 of this invention. It is a principal part schematic of the hydraulic power unit which concerns on Embodiment 3 of this invention. It is a principal part schematic of the modification of the embodiment. It is a principal part schematic of the hydraulic power unit which concerns on Embodiment 4 of this invention. It is a principal part schematic of the hydraulic power unit which concerns on Embodiment 5 of this invention. It is principal part sectional drawing of the hydraulic power unit which concerns on Embodiment 6 of this invention. It is the same schematic plan view. It is a flowchart of the hydraulic power unit which concerns on Embodiment 7 of this invention. It is a flowchart of the modification of the embodiment. It is a top view of the hydraulic power unit concerning Embodiment 8 of the present invention. It is the same front view. It is the schematic of the modification of this invention. 1 is a schematic perspective view of a hydroelectric power generator according to a proposal in Patent Document 1. FIG.

  Hereinafter, although the present invention is explained based on an embodiment, referring to an accompanying drawing, the present invention is not limited only to this embodiment.

Embodiment 1
FIG. 1 is a schematic diagram showing a hydroelectric generator according to Embodiment 1 of the present invention. In addition, since the whole structure of the hydroelectric generator 10 is based on a prior art, the same code | symbol is attached | subjected and illustration description of the same apparatus is abbreviate | omitted. In the figure, reference numeral 20 is a falling portion, reference numeral 21 is a falling channel, reference numeral 22 is a falling slope, reference numeral 25 is a water wheel, reference numeral 30 is a power generation chamber, reference numeral 31 is a driving wheel (drive wheel) in the power generation chamber, and reference numeral 32 is a rotation transmission belt. Reference numeral 33 denotes a generator.

  A feature of the hydroelectric generator 10 of the present embodiment is that a water amount adjusting plate 41 is disposed at the boundary between the falling slope 22 and the falling channel 21. The water amount adjusting plate 41 opens and closes the opening of the falling water channel 21 from both banks of the river, and slides in the horizontal direction by the drive source 42, and the sliding amount is also variable. The water amount adjustment plate 41 can also store water in a water storage area defined by the assumed upper limit water level and the assumed lower limit water level in the falling water portion 20 by adjusting the opening / closing amount thereof, and the water storage amount and the water discharge amount to the water turbine 25. By adjusting this, it is possible to always discharge water to the water turbine 25. In particular, when the amount of water in the river is small, the amount of water stored in the falling portion 20 can be increased by operating the water amount adjustment plate 41 in the closing direction.

  If the amount of stored water increases, the water surface rises and the pressure head rises accordingly, so that the energy transmitted to the turbine 25 increases. As a result, the amount of power generation increases. Therefore, maintaining the balance between the amount of incoming water and the amount of water falling while keeping the water level of the water falling part 20 as high as possible is a key point for high-output power generation. The opening degree of the water amount adjustment plate 41 is adjusted so as to be.

One of the water amount adjustment plates 41 can be stopped at a desired opening / closing amount and only the other can be operated. By developing this, as shown in FIG. 2, the water amount adjusting plate 41 can be provided only on one side.
Moreover, although this embodiment demonstrated about the case where the number of the water turbines 25 was one, it is also possible to apply to a pair of water turbines 25 and 25 which narrowed the installation space | interval. Furthermore, this embodiment can also be applied to a water channel.

On the falling water slope 22, an upper limit water level sensor 43 for detecting the assumed upper limit water level of the falling water part 20 and a lower limit water level sensor 44 for detecting the assumed lower limit water level are respectively disposed, and the water level sensors 43, 44 and the water amount adjusting plate 41 The drive source 42 is connected to the computer 45. The computer 45 automatically controls the opening / closing operation of the water amount adjusting plate 41 in accordance with the change in the water level of the water storage amount by the water level sensors 43 and 44 in the water falling part 20.
Note that the arrangement interval between the upper limit water level sensor 43 and the lower limit water level sensor 44 is arbitrarily set, and the time interval of operation of the drive source 42 that moves the water amount adjustment plate 41 via the computer 45 is determined depending on the arrangement interval. .

  According to the present embodiment, the water amount adjusting plate 41 is closed (or opened) by a predetermined amount, and the water amount adjusting plate 41 is narrowed in a state where the water wheel 25 is rotated by discharging water from the opening of the opened falling water channel 21. As the amount of water falls, the amount of water falling from the river becomes larger than the amount of water discharged, and eventually the water is stored in the water storage area of the water falling part 20 and the amount of stored water increases. If this state is continued, the amount of water stored in the water falling part 20 gradually increases while continuing to discharge water to the water wheel 25, and when the water level reaches the upper limit water level sensor 43, the upper limit water level sensor 43 detects this. . Then, the computer 45 activates the drive source 42 and slides the water amount adjustment plate 41 in the opening direction. Thereby, the water discharge amount to the water wheel 25 increases, and the water storage amount of the water storage area in the water falling part 20 decreases. When the water level of the stored water amount reaches the lower limit water level sensor 44, the lower limit water level sensor 44 detects this, and the computer 45 operates the drive source 42 again, and this time operates the water amount adjustment plate 41 in the closing direction.

  During the series of operations as described above, the water turbine 25 is discharged regardless of the flow rate of the river, so that stable power generation is possible. When the computer control is not performed, the drive source 42 can be manually operated, the amount of water stored in the water storage area in the water falling portion 20 is visually observed, and the drive source 42 is manually operated to continuously discharge water to the water turbine 25. This enables stable power generation as in the case of computer control.

Embodiment 2
FIG. 3 shows a second embodiment of the present invention. The configuration different from that of the first embodiment is that a pair of water turbines 25 to be applied is arranged with an appropriate interval between them, and a flow dividing plate 46 that crosses the waterfall 21 is installed at the center of the opening of the waterfall 21. It is to have done. Then, the water amount adjusting plates 41 and 41 slide and open the diversion openings 47 and 47 of the falling water channel 21 divided by the diverting plate 46 in the horizontal direction with respect to the diverting plate 46 from both banks, respectively. The diversion adjustment of the water storage amount of 20 and the water discharge amount to the water turbine 25 is performed. Thereby, the water discharge according to the opening / closing amount of the water amount adjusting plates 41, 41 can be accurately performed from the diversion openings 47, 47 to the pair of water turbines 25, 25 without any loss.

  One of the water amount adjusting plates 41 can also be stopped at a desired opening / closing amount, and only the other can be operated. Other configurations and operations are the same as those of the first embodiment. Moreover, this embodiment is also applicable to a water channel.

Embodiment 3
In FIG. 4, the principal part of the hydroelectric generator 10 which concerns on Embodiment 3 of this invention is shown. The third embodiment is a modification of the first embodiment, in which the width in the orthogonal direction is adjusted to the river flow in the falling water channel 21 so that the water amount adjustment plate 41 including the drive source 42 is within the river width. It will be. In addition, if there is room in the river width, the water amount adjustment plate 41 can be provided only on one side (see FIG. 5).

Since this embodiment is configured as described above, civil engineering work on the riverbank is unnecessary or minimal, and the construction cost is remarkably reduced and the construction period is remarkably shortened.
The remaining configuration and operation of the third embodiment are the same as those of the first embodiment.

Embodiment 4
In FIG. 6, the principal part of the hydroelectric generator 10 which concerns on Embodiment 4 of this invention is shown. The fourth embodiment is a modification of the first embodiment, and includes a dust trapping net 6 that collects dust and the like in the falling water portion 20 and a blockage that closes the falling water portion 20 during heavy rain or during maintenance / inspection. A plate 8 is provided.
As shown in FIG. 6, the dust catching net 6 is disposed on a step portion 20 a formed on the upper part of the falling water part 20, and the closing plate 8 is disposed above the dust catching net 6.

As shown in FIG. 6, the blocking plate 8 is arranged on one side of the river bank, and advances and retreats from one river bank to the other river bank. The mechanism for advancing and retracting the closing plate 8 is not particularly limited. For example, as schematically shown in FIG. 6, a rail R is laid over the advancing and retracting range of the closing plate 8, and the closing plate 8 is the rail. You may make it drive | work on R.
Since the present embodiment is configured as described above, it is possible to prevent dust such as a piece of wood from falling into the falling water channel 21. Further, it is possible to prevent the water wheel 25 from being damaged due to a large amount of water falling into the water wheel 25 in the case of heavy rain.

Embodiment 5
In FIG. 7, the principal part of the hydroelectric generator 10 which concerns on Embodiment 5 of this invention is shown. The fifth embodiment is a modification of the fourth embodiment, in which the blocking plate 8 is installed on both banks of the river so as to freely advance and retreat.

  Since the present embodiment is configured as described above, the falling portion 20 can be quickly closed during heavy rain. Moreover, since the length of each obstruction | occlusion board 8 can be shortened, the obstruction | occlusion board 8 can be arrange | positioned also in a place with few flat parts in a riverbank.

Embodiment 6
8 and 9 show the main part of the hydroelectric generator 10 according to Embodiment 6 of the present invention. The sixth embodiment is a modification of the fourth embodiment, in which the closing plate 8 is installed on the ceiling 30a of the power generation chamber 30, and the closing plate 8 is advanced and retracted along the flow direction of the river. The mechanism for moving the closing plate 8 back and forth is, for example, the same type as the drive source 42 for moving the water amount adjusting plate 41 back and forth.
Since this embodiment has such a configuration, special civil engineering work for the riverbank for providing the blocking plate 8 is not required, and the construction period and construction cost can be reduced. Further, since the amount of advancement / retraction of the closing plate 8 is remarkably small as compared with the fourth and fifth embodiments, the opening / closing can be performed more quickly.

  In addition, as shown by a two-dot chain line in FIG. 8, a closing plate 8A is provided on the roof of the power generation chamber 30 so as to be able to advance and retreat, so that the closing plate 8 is doubled. 20 may be able to be completely occluded.

Embodiment 7
In FIG. 10, the hydraulic power unit 10 which concerns on Embodiment 7 of this invention is shown with a flowchart. The seventh embodiment is a modification of the first embodiment, in which the water amount adjusting plate 41 is interposed in the falling water channel 21 as an electric gate valve V. As shown in FIG. 10, the motor M of the electric gate valve V is connected to a computer 45 so that the valve 45 is automatically opened and closed by the computer 45.

  Thus, in this embodiment, since the electric gate valve V is interposed in the falling water channel 21 as the water amount adjusting plate 41, the configuration of the first embodiment can be simplified and the pressure resistance is also improved.

  The remaining configuration of the seventh embodiment is the same as that of the first embodiment.

  Since the present embodiment has such a configuration, the configuration is simplified and the convenience of operation is improved.

  In the present embodiment, the valve V is an electric valve, but it can also be a manual valve.

  Furthermore, as shown in FIG. 11, when there are two water turbines 25, the falling water passage 21 may be branched and an electric valve V or a manual valve V may be interposed in each of them.

Embodiment 8
12 and 13 show the main part of a hydroelectric generator 10 according to Embodiment 8 of the present invention. The eighth embodiment is a modification of the sixth embodiment, and includes a fishway 60 that communicates from the lower downstream side to the roof of the power generation chamber 30 and a water intake path 70 for irrigation from the roof of the power generation chamber 30 to the rice fields. It is supposed to be provided.

  A door 61 for blocking the fishway 60 is provided at the opening on the roof side (water conduit side) of the power generation chamber 30 of the fishway 60 so as to be movable up and down. In this case, as shown in FIG. 13, the lower part of the opening on the roof side (water channel side) of the fishway 60 is located below the roof of the power generation chamber 30, that is, below the bottom surface of the water channel. Since it is supplied, it is preferable.

  A door 71 for blocking the water intake passage 70 is provided at the opening on the roof side (water conduit side) of the power generation chamber 30 of the water intake passage 70 so as to be movable up and down. In this case, as shown in FIG. 13, the lower portion of the opening on the roof side (water conduit side) of the intake channel 70 is located below the roof of the power generation chamber 30, that is, the bottom surface of the water conduit, so that the water is reliably taken into the intake channel. 70 is preferable.

  The remaining configuration of the eighth embodiment is the same as that of the sixth embodiment.

  As mentioned above, although this invention has been demonstrated based on embodiment, this invention is not limited only to this embodiment, A various change is possible.

  In the present embodiment, the ceiling portion 30a of the power generation chamber 30 forming the water conduit is flush with the river bed in the upper river stage, but the position of the ceiling part 30a is not limited to the above, and the river bed in the upper river stage It only has to be kept from becoming higher.

  In the first embodiment, the water amount adjusting plate 41 is arranged at the boundary between the falling slope 22 and the falling channel 21, but the arrangement position of the water amount adjusting plate 41 is not limited to the above, and below the boundary. Thus, the position may be set appropriately above the water wheel 25.

  Furthermore, although the falling slope 22 is linear in Embodiment 1, the falling slope 22 may be formed by a curve.

  Further, in the fourth embodiment, the dust catching net 6 is used for dust removal, but dust removal is not limited to the above, and can be made as appropriate, for example, a dust catching grid.

  Furthermore, in this embodiment, one hydroelectric generator is arranged in the lower part of the river or the irrigation channel to the full width of the river. If the river is wide, a plurality of hydroelectric generators are arranged in parallel in the river width direction. (See FIG. 14).

  In the hydroelectric power generation apparatus according to the present invention, the hydroelectric power generation apparatus is used on a national scale because it mainly uses riverbeds and riverbeds that have an infinite number of rivers that have sufficient steps and can create steps. If it is applied, it will be expected that the industry involved in the construction of this hydroelectric generator will be activated as well as self-sufficiency of electric energy.

6 Waste catching net plate 8,8A Blocking plate 10 Hydroelectric power generation device 20 Falling portion 20a Step portion 21 Falling channel 22 Falling slope 25 Turbine 30 Power generation chamber 30a Ceiling portion 33 Generator 35 Guide block wall 36 Drainage channel 41 Water amount adjustment plate 42 Drive Source 43 Upper limit water level sensor 44 Lower limit water level sensor 45 Computer 46 Diverging plate 47 Diverging opening 60 Fishway 61 Door 70 Intake channel 71 Door R rail V valve, motorized valve

Claims (21)

A hydroelectric power generation device installed at the lower part of a river or irrigation channel with an upper and lower step on the river bed,
A falling part that falls while concentrating running water from the upper stage side, a falling path that is connected to the lower end of the falling part and that drops the falling water onto a water turbine, and a falling water that is connected to the falling path and that falls from the falling path And a water discharge channel for discharging water downstream,
The falling water part has a water storage area defined by an assumed upper limit water level and an assumed lower limit water level,
The drainage channel has a water amount adjusting plate having a drive source above the water wheel,
The drive source is configured to drive the water amount adjustment plate so as to freely advance and retract in the horizontal direction.
The hydraulic power generation apparatus according to claim 1, wherein the amount of water stored in the water storage region is adjusted between an assumed upper limit water level and an assumed lower limit water level by adjusting an opening width of the falling water channel using the water amount adjusting plate.   2. The hydroelectric power generator according to claim 1, wherein the falling water channel has a water amount adjusting plate on one side or both sides.   The hydroelectric generator according to claim 1, wherein a set of a falling portion, a falling channel, and a discharge channel is arranged in parallel in a plurality of sets of river width directions. Having a pair of water wheels facing each other in the waterway,
A diversion plate for diverting the falling water above the middle part of the pair of water turbines arranged opposite to each other in the falling water channel;
The hydroelectric generator according to claim 1, wherein the water flow adjusting plate includes a pair of water amount adjusting plates arranged to face the diversion plate.   The hydroelectric power generator according to claim 1, further comprising a water guide path that is continuously provided on the upper stage side and guides the flowing water to the falling water part.   2. The hydroelectric generator according to claim 1, wherein a dust catching member is disposed on an upper part of the falling water part.   7. The hydroelectric generator according to claim 6, wherein a closing plate for closing the falling water portion is disposed above the dust catching member so as to be movable back and forth.   8. The hydroelectric generator according to claim 7, wherein the blocking plate is disposed on one or both of the river banks.   8. The hydroelectric generator according to claim 7, wherein the blocking plate is disposed below the water conduit.   The hydroelectric generator according to claim 9, wherein the closing plate is doubled.   2. The hydroelectric generator according to claim 1, wherein the water amount adjusting plate is a valve. Having a pair of water wheels facing each other in the waterway,
Divide the falling water above the pair of water turbines arranged opposite to each other in the falling water channel,
The hydroelectric generator according to claim 11, wherein a valve is interposed in each of the divided flow paths.   The hydroelectric generator according to claim 11 or 12, wherein the valve is an electric valve.   2. The hydroelectric generator according to claim 1, wherein the width in the direction perpendicular to the river flow of the falling water channel is adjusted so that the drive source of the water amount adjusting plate is disposed within the river width.   An upper limit water level sensor that detects an assumed upper limit water level, a lower limit sensor that detects an assumed lower limit water level, and a computer that controls a drive source of a water amount adjusting plate in response to signals from the upper limit water level sensor and the lower limit sensor. The hydroelectric power generator according to claim 1.   The hydraulic power according to claim 1, wherein driving wheels are disposed on a rotating shaft of a water turbine, and the moving wheels are belted with driven wheels having a smaller diameter than the driving wheels disposed on a rotating shaft of a generator. Power generation device.   The hydroelectric generator according to claim 1, wherein the drive source is manually operable.   6. The hydroelectric power generator according to claim 5, wherein a fishway having an opening is attached to the water conduit.   19. The hydroelectric generator according to claim 18, wherein a lower portion of the opening on the side of the waterway of the fishway is formed below the bottom surface of the waterway. 6. The hydroelectric generator according to claim 5, wherein a water intake passage having an opening is attached to the water conduit. 21. The hydroelectric power generator according to claim 20, wherein a lower portion of the opening portion of the intake channel on the side of the water conduit is formed below the bottom surface of the water conduit.

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