Float-type hydraulic power generation device

Abstract

To provide a float-type hydraulic power generation device that can be easily transported to and installed at a desired location suitable for small hydraulic power generation, can be operated without interruption by dusts flowing in a water passage, and does not require external motive force.SOLUTION: A float-type hydraulic power generation device includes: a hydraulic turbine-type dust removal unit 2 which removes dust from water flowing in an open-channel water passage 6 such as a middle or small river and an agricultural water channel; a hydraulic power generation unit 3; and a float 4. The hydraulic turbine-type dust removal unit 2 and the hydraulic power generation unit 3 are integrally assembled into a unit assembly 5, with the former on an upstream side of the water passage 6 and the latter on a downstream side of the water passage 6. A duct 24, inside of which a hydraulic turbine of the hydraulic power generation unit 3 is disposed, is coupled and connected to a flow outlet which is provided in the hydraulic turbine-type dust removal unit 2 and through which clean water from which dust has been removed flows. The clean water flows through the flow outlet into the duct 24 to rotate the hydraulic turbine. The float 4 is coupled to the unit assembly 5 to hold the float in the flow passage 6 in a floating manner.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a float-type hydroelectric power generating apparatus that is installed in a floating state on an open waterway such as a small or medium-sized river or an agricultural irrigation channel. To this end, this float-type hydroelectric power generation device is equipped with a hydroelectric generator unit, a waterwheel-type dust collector unit, and a float as an integrated unit. The waterwheel-type dust collector unit uses the force of the water current flowing through the waterway to remove debris such as grass, tree branches, and leaves from the flowing water in the waterway, and only the cleaned water flows out into the flow path (duct) in which the waterwheel of the hydroelectric generator unit is installed.

[0002] Therefore, the water wheel of this hydroelectric generator unit can continue to generate electricity by rotating smoothly without being hindered by garbage due to the clean running water. Also, since this water wheel type dust collector unit removes garbage using the force of the water flow, no external power is required for its operation. Furthermore, the float-type hydroelectric power generation device thus constructed can be easily transported and installed anywhere in mountainous or plain areas that have a waterway with sufficient flow rate and head suitable for hydroelectric power generation. In particular, in these areas, depopulation and aging have progressed in recent years, and even the maintenance of facilities that have been used for many years, such as gas stations, is in jeopardy. There is a demand for small hydroelectric power plants that have a low environmental impact as an alternative energy source to fossil fuels. [Background technology]

[0003] Generally, in open waterways such as small and medium-sized rivers and agricultural irrigation channels, garbage such as grass, tree branches, and leaves flow into them and clog the branch waterways used for irrigation, and in particular in hydroelectric power generation devices that generate power by drawing water from one waterway into a branch waterway, the garbage gets caught in the turbines used for generating electricity and impedes the rotation of the turbines. Furthermore, these problems become even more serious when the water level in the waterway rises significantly due to rainfall or other factors, causing a sudden increase in the amount of garbage flowing through the waterway.

[0004] In order to address such problems, the applicant previously invented and applied for a patent for an invention entitled "Debris Removal Device for Waterways" and obtained a patent (Patent No. 6552144, Patent Document 1). Next, the trash removal device for waterways of the present invention will be briefly described. This waterway debris removal device (corresponding to the "waterwheel type dust collector unit" of the present invention) is installed at a water intake (corresponding to the "waterwheel type dust collector unit outlet" of the present invention) provided to take in running water flowing through a main waterway into a branch waterway branching off from an open waterway-like main waterway such as a small or medium-sized river or an irrigation channel. It is equipped with a rotor having a roughly polygonal or circular cylindrical shape, and a number of blades that are provided on the outer periphery of the body of the rotor at equal intervals in the circumferential direction and parallel to the rotation axis of the rotor, and that rotate the rotor by receiving the force of the water flow.

[0005] The rotor is supported so as to be rotatable about its axis, and the internal space of the body faces the water intake, surrounds it, and is in communication with it. The rotor is provided with a screen for trapping garbage over substantially the entire area of ​​the rotating body.

[0006] Furthermore, each of these multiple blades is provided so that it can rotate freely (upside down) by itself, and is equipped with a stopper member that stops the rotation, so that when the blade rotates together with the rotor toward the downstream of the water flow, it is pushed by the water flow and rotates by itself until the stopper member hits the outer circumferential surface of the body of the rotor, and when it is fixed in that position, it receives the water flow and generates a rotational force for the rotor. Also, when the blade rotates together with the rotor toward the upstream of the water flow, it rotates by itself in the opposite direction due to the resistance of the water flow, and is automatically displaced to an angle that provides the least resistance to the water flow, preventing the blade from becoming a resistance to the rotation of the rotor.

[0007] Therefore, the garbage that flows from the upstream of the main channel and is trapped by the screen and the blades is carried to the downstream side of the main channel by the rotation of the rotor, where it is peeled off and separated by some of the flowing water flowing inside the rotor and some of the flowing water flowing outside the rotor, and is discharged downstream of the main channel together with the flowing water to be removed. Here, "a portion of the flowing water flowing inside the rotor" refers to a portion of the flowing water in the main channel that has passed through the screen and flowed into the rotor. Thus, "the remaining portion of the flowing water flowing inside the rotor" refers to the portion of the flowing water in the main channel that has flowed into the rotor and that flows into the branch channel via the intake. Therefore, this flowing water is clean water from which garbage has been removed.

[0008] Since this waste removal device for waterways is constructed as described above, it has the following effects. The rotor rotates due to the force of the water flow acting on multiple blades attached to the outer periphery of the rotor's body, so there is no need for an externally powered device such as a rake to remove debris trapped in the screen or blades. Instead, debris can be automatically removed without power from the flowing water that flows from inside the rotor through the water intake and into the branch channel. In addition, since the removed garbage is discharged downstream of the main waterway together with the flowing water, no special garbage disposal equipment is required to treat this garbage. Furthermore, these features simplify the structure of the waterway debris removal device, allowing it to be easily installed at the water intake.

[0009] This structure also automatically changes the rotation speed of the rotor when the speed of the water flowing in the main waterway changes. Therefore, even if the water in the main waterway rises due to rain or other reasons and the amount of garbage flowing in increases, the rotation speed of the rotor also increases, so the amount of garbage carried downstream also increases, and garbage does not accumulate on the rotor. Furthermore, since the rotation axis of the rotor is installed vertically relative to the bottom surface of the main waterway, the rotor can continue to rotate and remove debris without being affected even if the water level in the main waterway rises and falls due to changes in the water volume.

[0010] Furthermore, as described above, only clean flowing water from which debris has been removed flows into the branch waterway through the intake, so the turbine of the hydroelectric power generation device (which corresponds to the "hydroelectric generator unit" of the present invention) installed in the branch waterway can rotate smoothly and continue generating electricity without being obstructed by debris in the flowing water.

[0011] In this way, the applicant's earlier invention, the waterway debris removal device, and the hydroelectric power generation device installed in conjunction with this debris removal device, provide a variety of effects; however, the locations at which these devices are installed are limited in that, in the former case, they are installed at an intake port provided to take in the water flowing through the main waterway into a branch waterway, and in the latter case, they are installed at a branch waterway connected to this intake port. For this reason, even if open waterways such as small and medium-sized rivers and agricultural irrigation channels have sufficient flow rate and head and are suitable for small-scale hydroelectric power generation, it is not easy to transport, install, and utilize these devices in the area where the waterway is located.

[0012] Conventionally, a float-type waterway debris removal device that is installed in a floating manner is known (Patent Document 2), but this floats up and down at a specific location in the waterway and is not designed to be easily transported, installed, and used anywhere in a waterway where debris needs to be removed. Furthermore, there has been no known float-type hydroelectric power generation device in the past in which a waterway debris removal device is incorporated into the entire integrated hydroelectric power generation device, which is constructed in a floating manner as a whole and can be easily transported and installed at any desired location having a waterway suitable for hydroelectric power generation. [Prior art documents] [Patent documents]

[0013] [Patent Document 1] Patent No. 6552144 [Patent Document 2] JP 2000-84551 A Summary of the Invention [Problem to be solved by the invention]

[0014] The object of the present invention is to solve the above-mentioned problems associated with conventional waterway garbage removal devices and hydroelectric power generation devices, by assembling a waterwheel-type dust remover unit to a hydroelectric generator unit to integrate the entire device and to construct the entire device in a floating form, thereby facilitating transportation and installation at a desired location having a waterway suitable for hydroelectric power generation, and further, to provide a float-type hydroelectric power generation device which is capable of generating hydroelectric power while removing garbage, and which can continue to operate without garbage accumulating on the rotating body even if the water in the waterway rises due to rain or other reasons and the amount of garbage flowing in increases, and which does not require an external power source. [Means for solving the problem]

[0015] The above-mentioned problems can be solved by the following inventions described in the claims of the present application. That is, the invention described in claim 1 is a float-type hydroelectric power generation device that is installed in a floating state on an open channel such as a small or medium-sized river or an agricultural irrigation channel, and is characterized in that the float-type hydroelectric power generation device comprises a waterwheel-type dust collector unit that removes garbage from the flowing water flowing through the channel, a hydroelectric generator unit, and a float, the waterwheel-type dust collector unit and the hydroelectric generator unit are integrally assembled into a unit assembly, with the waterwheel-type dust collector unit on the upstream side of the channel and the hydroelectric generator unit on the downstream side of the channel, and a duct in which the waterwheel of the hydroelectric generator unit is installed is connected to an outlet provided in the waterwheel-type dust collector unit through which the flowing water of the channel that has been cleaned by removing garbage flows out, and the cleaned flowing water of the channel flows into the duct through the outlet to rotate the waterwheel, and the float is connected to the unit assembly to hold the unit assembly in a floating state on the channel.

[0016] The invention described in claim 2 is a rotating body having a polygonal or circular cylindrical shape, and is arranged so as to be sandwiched between an upper shield plate having a circular shape in a plan view and a lower shield plate having the same shape. A screen for trapping garbage is provided over substantially the entire area of ​​the rotating cylindrical body. The upper and lower ends of the rotating shaft are supported by bearings provided at the upper and lower parts of the dust collector unit frame, respectively, to rotate the rotating body. The rotating body is provided with a plurality of blades that rotate the rotating body by receiving the force of the water flow. The blades are provided on the outer periphery of the body of the rotating body at equal intervals in the circumferential direction and parallel to the rotating shaft, and each blade rotates upside down and has a stopper member that stops the rotation. The upper shield plate and the lower shield plate are each provided with the outflow port. The float-type hydroelectric power generation device according to claim 1, characterized in that the blades are configured to rotate together with the rotor toward the downstream of the water flow, and are pushed by the water flow until the stopper member hits the outer periphery of the body of the rotor, and when the stopper member is fixed in that position, the stopper member receives the water flow and generates a rotational force for the rotor. When the blades rotate together with the rotor toward the upstream of the water flow, the blades rotate in the opposite direction due to the resistance of the water flow and are automatically displaced to an angular position with the least resistance to the water flow. The garbage that has flowed from the upstream of the waterway and is trapped in the screen or the blades is carried to the downstream side of the waterway by the rotation of the rotor, and is peeled off and separated by a portion of the flowing water flowing inside the rotor and the flowing water flowing outside the rotor, and is discharged downstream of the waterway together with the flowing water to be removed.

[0017] The invention described in claim 3 is directed to the hydroelectric generator unit, in which the duct is made up of three duct parts in the length direction, a front duct part, a central duct part, and a rear duct part, and the front duct part is branched into upper and lower parts to make up two water intake duct parts, an upper water intake duct part and a lower water intake duct part, and these upper water intake duct part and lower water intake duct part are connected to the upper outlet and the lower outlet of the water turbine type dust collector unit, respectively, so that their interiors are in communication with each other, the central duct part is a cylindrical duct part in which the water turbine is installed, and the rear duct part is a divergent duct part whose dimensions increase towards the rear, and a force is generated by the Coanda effect to suck the cleaned water flowing through the water channel from the upper outlet and the lower outlet into the divergent duct part. 3. The float type hydroelectric power generation device according to claim 2.

[0018] The invention described in claim 4 is a float-type hydroelectric power generation device as described in any one of claims 1 to 3, characterized in that, when viewed upstream of the waterway, a left float having an elongated, streamlined shape and a right float having the same shape are connected by a plurality of connecting rods and assembled together, and the left float and the right float are connected to the left upper frame rod and the right upper frame rod, respectively, of the frame body of the unit assembly, so as to hold the unit assembly in a floating state in the waterway.

[0019] Furthermore, the invention described in claim 5 is a float-type hydroelectric power generation device as described in claim 4, characterized in that rudder blades are integrally provided at symmetrical positions on the left and right rear ends of the left and right floats. Effect of the Invention

[0020] Since the present invention is configured as described above, it can provide the following various effects. In the float type hydroelectric power generation device of the present invention, the water wheel type dust collector unit and the hydroelectric generator unit are assembled together to form a unit assembly, and a float is connected to this unit assembly to hold the unit assembly floating in a waterway. Therefore, as long as the device is in a mountainous or plain area that has a waterway suitable for hydroelectric power generation with sufficient flow rate and head, the entire device can be easily transported and installed, either as is or disassembled into several parts, anywhere, thereby significantly improving convenience. If electrification through hydroelectric power can be promoted in many aspects of production activities and daily life in areas such as these, where depopulation and aging are progressing and the maintenance and operation of gas stations is in jeopardy, it will be possible to maintain and improve the efficiency of production activities and the quality of daily life, thereby contributing to the resolution of social problems.

[0021] In addition, in this float-type hydroelectric power generation device, a duct inside which the water turbine of the hydroelectric generator unit is installed is connected to the outlet of the water turbine-type dust collector unit, so that the clean flowing water of the waterway after the garbage has been removed (dust removal) flows into the duct through the outlet and rotates the water turbine.The water turbine can rotate smoothly without being obstructed by the garbage and can continue to generate power, so stable power is obtained and its utilization efficiency is improved.

[0022] In addition, the waterwheel-type dust collector unit is positioned so as to be sandwiched between an upper shield plate and a lower shield plate, and a screen for trapping garbage is provided over almost the entire area of ​​the rotating cylindrical body, and the polygonal or circular cylindrical rotating body rotates automatically by the force of the water flow that acts on a plurality of blades provided on the outer periphery of the body of the rotating body, so that garbage (debris) such as grass, tree branches and leaves that flow from the upstream of the waterway and are trapped by the screen or blades are automatically carried to the downstream side of the waterway by the rotation of the rotating body, where they are detached and separated from the screen and blades by some of the flowing water flowing inside the rotating body and / or the flowing water flowing outside the rotating body, and are then washed out downstream of the waterway together with the flowing water and removed. As a result, there is no need for an externally powered device such as a rake to remove the debris trapped in these blades and screens. Instead, debris can be automatically removed without power from the flowing water in the waterway that flows from inside the rotor through the outlets (upper outlet and lower outlet) provided on the upper and lower shield plates and into the duct in which the water turbine is installed. In addition, a special waste treatment device for treating the removed waste is not required. Furthermore, these features simplify the structure of the water wheel type dust collector unit, and it can be easily installed in a waterway.

[0023] In addition, because of this structure, the rotation speed of the rotor automatically changes when the speed of the water flowing in the waterway changes. So even if the water in the waterway rises due to rain or other reasons and the amount of garbage flowing in increases, the rotation speed of the rotor also increases, and the amount of garbage carried downstream also increases, so garbage does not accumulate on the rotor.

[0024] In addition, the upper and lower water intake duct portions of the front duct section of the hydroelectric generator unit are connected to the upper and lower outlets of the hydroelectric generator unit, respectively, so that the clean flowing water in the waterway from which garbage has been removed is split into two flow paths and flows from the hydroelectric generator unit into the hydroelectric generator unit and is sucked in.This makes the flow path of the flowing water smoother and reduces stagnation and turbulence, improves the suction height (effective head) of the hydroelectric generator unit, and increases power generation efficiency.

[0025] In addition, the rear duct section of the hydroelectric generator unit is made to be a divergent duct section, and due to the Coanda effect, a force is generated that draws the cleaned flowing water in the waterway from the outlets (upper outlet and lower outlet) of the hydroelectric generator unit into the divergent duct section. This also improves the suction height of the hydroelectric generator unit, thereby improving power generation efficiency.

[0026] In addition, when viewed upstream of the waterway, the floats are composed of a left float which has an elongated, streamlined shape and a right float which has the same shape, which are connected by multiple connecting rods and assembled together, and these left and right floats are connected to the left and right upper frame rods of the frame body of the unit assembly, respectively, to hold the unit assembly in a floating state in the waterway.Therefore, the influence of wind which the floats receive when holding the unit assembly in a floating state in the waterway can be reduced, and the attitude of this float-type hydroelectric power generation device, and therefore its operation, can be stabilized.

[0027] Furthermore, rudder blades are integrally attached to the left and right floats at symmetrical positions on the rear end of each float, so that the float-type hydroelectric power generation device can always be positioned along the flow path of the water flowing through the waterway, and its posture, towing, and operation can be stabilized. [Brief description of the drawings]

[0028] [Figure 1] 1 is an overall perspective view of a float type hydroelectric power generating device according to an embodiment of the present invention, showing a screen removed from a rotor. FIG. [Diagram 2] FIG. 2 is a left side view of the float type hydroelectric power generation device. [Diagram 3] FIG. 2 is a plan view of the float type hydroelectric power generation device. [Figure 4] FIG. 2 is a bottom view of the float type hydroelectric power generation device. [Diagram 5] FIG. 2 is a front view of the float type hydroelectric power generation device. [Figure 6] FIG. 2 is a rear view of the float type hydroelectric power generation device. [Figure 7] 2 is a central cross-sectional view taken along the flow direction of a water channel of the float type hydroelectric power generating device of FIG. 1. FIG. [Figure 8] This diagram shows the state in which the clean flowing water from the waterway after the garbage has been removed leaves the outlet of the waterwheel-type dust collector unit and is sucked into the upper and lower water intake ducts of the hydroelectric generator unit. [Figure 9]This is a diagram showing the state of the water flowing from the waterway, with the debris removed, flowing through the duct of the hydroelectric generator unit. [Figure 10] FIG. 2 is a plan view of a water wheel type dust collector placed in flowing water of a waterway, and is a diagram for explaining the operation of the water wheel type dust collector. [Figure 11] FIG. 2 is a perspective view of the water wheel type dust collector shown in FIG. [Figure 12] 12 is a view showing the water wheel type dust remover of FIG. 11 with the front half cut away. [Figure 13] FIG. 12 is a diagram showing the water wheel type dust remover of FIG. 11 with a screen attached to the rotor. [Figure 14] FIG. 2 is a perspective view of the frame of the water wheel type dust remover unit. [Figure 15] 15 is a diagram showing only the integral assembly portion of the frame in FIG. 14, including the upper shield plate and the upper frame rod including the bearing. [Figure 16] 15 is a perspective view of a completed water wheel type dust remover unit obtained by incorporating the water wheel type dust remover of FIG. 11 into the frame of FIG. 14. FIG. [Figure 17] FIG. 2 is a perspective view showing a state in which a duct of a hydroelectric generator unit is attached to a frame of a unit assembly. [Figure 18] 18 is a perspective view of a completed unit assembly in which the water wheel type dust remover unit of FIG. 16 is further attached to the frame of the unit assembly of FIG. 17. FIG. [Figure 19] This is a diagram to explain how to connect a float to the upper frame rod of the frame body of the unit assembly, and is an oblique view seen from the upper left rear as viewed upstream of the waterway. [Figure 20] This is a diagram to explain how to connect a float to the upper frame rod of the frame body of the unit assembly, and is an oblique view seen from the lower rear left as viewed downstream in the waterway. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] (Example) Next, an embodiment of the float type hydroelectric generating device of the present invention will be described in detail with reference to the drawings. The float type hydroelectric power generation device of this embodiment is mainly used in rural mountain and plain areas, which have recently been experiencing depopulation and aging of the population, by being installed in a floating state on an open waterway such as a small or medium-sized river or an irrigation channel flowing through those areas. The structure, operation, and effects of the float type hydroelectric power generating device of this embodiment will be described in detail below. In the following, unless otherwise specified, front, back, left, and right are defined as viewed from the upstream direction of the waterway.

[0030] (Overall structure and operation of a float-type hydroelectric power generating device) First, the overall structure of the float type hydroelectric generating apparatus of this embodiment and an outline of its operation will be described. As shown in Figures 1 to 7, the float type hydroelectric power generation device 1 of this embodiment generally comprises a waterwheel type dust collector unit 2 that removes garbage from flowing water flowing through a waterway 6, a hydroelectric generator unit 3, and a float 4. Here, the water turbine type dust collector unit 2 and the hydroelectric generator unit 3 are integrally assembled into a unit assembly 5, with the water turbine type dust collector unit 2 on the upstream side of a waterway 6 and the hydroelectric generator unit 3 on the downstream side of the waterway 6. A float 4 is connected to this unit assembly 5, and this float 4 holds the unit assembly 5 in a floating state on the waterway 6.

[0031] In this case, in the unit assembly 5, a front duct portion 24a of a duct 24 in which a water turbine 21 (see Figure 7) of the hydroelectric generator unit 3 is installed is connected to an outlet 15 (see Figures 14 to 16; there are two, one above and one below) provided in the water turbine type dust collector unit 2, through which the flowing water of the waterway 6 that has been cleaned by removing garbage flows out, and the cleaned flowing water of the waterway 6 flows into the duct 24 from the front duct portion 24a through the outlet 15, causing the water turbine 21 installed in the duct 24 to rotate. Here, the front duct portion 24a is made up of two upper and lower water intake duct portions, an upper water intake duct portion 24a1 and a lower water intake duct portion 24a2, which are respectively connected to the above-mentioned two upper and lower outlets 15.

[0032] Now, when the flowing water in the waterway 6 containing garbage such as grass, tree branches, and leaves enters the inside of the waterwheel type dust collector unit 2, it is filtered by the screen 27 (see FIG. 13) stretched on the body of the rotor 7, and becomes clean flowing water from which the garbage has been removed. The flowing water in the waterway 6 thus cleaned then flows into the duct 24 through the two outlets 15 as described above, and rotates the waterwheel 21 installed there. This generates hydroelectric power. The state of the flow of the cleaned flowing water in the waterway 6 during this time is shown in FIG. 8 and FIG. 9. On the other hand, the debris is trapped by the screen 27 and a number of blades 8 that are provided on the body of the rotor 7 in the same manner as the screen 27, and is carried downstream of the waterway 6 as the rotor 7 rotates, where it is peeled off, separated, and flows downstream to be removed. The function of the water wheel type dust collector unit 2 in removing dust will be described in detail later.

[0033] (Overall structure of the water wheel type dust collector unit) Next, the overall structure of the water wheel type dust remover unit 2 of this embodiment will be described in detail with reference to Figs. The water wheel type dust remover unit 2 of this embodiment forms one of the constituent units of the unit assembly 5, and as shown in Fig. 16, generally comprises a water wheel type dust remover 20 and a dust remover unit frame 10. Here, the water wheel type dust remover 20 is an assembly combining a rotor 7 and a plurality of blades 8. Therefore, hereinafter, the rotor 7, the blades 8, and the dust remover unit frame 10 will be described in order.

[0034] (rotating body) First, the rotating body 7 will be described with reference to FIGS. The rotor 7 has a polygonal or circular (18-sided in this embodiment) cylindrical shape with all of the blades 8 folded, and is sandwiched between an upper shield plate 11a, which is circular in plan view and fixed to the upper part of the frame 10, and a lower shield plate 11b, which is fixed to the lower part of the frame 10 so as to face the upper shield plate 11a and has the same shape and structure, and the screen 27 for trapping dirt is provided over almost the entire rotating cylindrical body. The upper and lower ends of the rotating shaft 13 are supported by bearings 12 provided on the upper upper frame rod assembly 14a and the lower lower frame rod assembly 14b of the frame 10, respectively, and are rotatably held. The upper shield plate 11a and lower shield plate 11b are fixedly held to the side surfaces of the upper frame rod assembly 14a and the lower frame rod assembly 14b, opposite the side on which the two bearings 12 are provided. Therefore, the upper shield plate 11a and the lower shield plate 11b are fixedly attached to the frame body 10 via the upper frame rod assembly 14a and the lower frame rod assembly 14b. The upper frame rod assembly 14a and the lower frame rod assembly 14b will be explained in detail later when the dust remover unit frame 10 is explained. In addition, FIG. 13 shows a state in which the screen 27 is provided on the rotor 7, but in the other figures, the screen 27 is not shown.

[0035] The body of the rotor 7 is the base on which the blades 8 are attached, and 18 thin metal frame plates 17, the number of which corresponds to the number of corners of the 18-sided polygon, are arranged to form an 18-sided prism, and are firmly connected and integrated by connecting rings 16a, 16b, and 16c arranged in three rows, one above the other. The body of the rotor 7 integrated in this way is then connected to the rotating shaft 13 at the position of connecting ring 16b via nine connecting rods 36, completing the integrated structure of the rotor 7 (see FIG. 11). Each of the plurality of blades 8 is attached to a respective frame plate 17. The details of the attachment structure will be described later.

[0036] Each frame plate 17 also serves as a unit frame body on which a screen 27 is stretched, and two windows 18, 18 are punched out in the inner region of the elongated plate-shaped frame plate 17, and the screen 27 is provided on each frame plate 17 so as to cover these windows 18, 18. Then, through this screen 27, the running water in the water channel 6 flows into the interior of the water wheel type dust collector unit 2 and also flows out to the outside. A central partition portion 17b of the frame plate 17 which separates the two window portions 18, 18, overlaps with the connecting ring 16b when viewed in the longitudinal direction of the frame plate 17, and the two are joined to each other.

[0037] (multiple wings) Next, the blades 8 will be described with reference to FIGS. The multiple blades 8 are made of metal and have the function of rotating the rotor 7 when subjected to the force of the water current. As is clear from the above, all of the blades 8 are attached to the outer periphery of each of the 18 frame plates 17 that make up the body of the rotor 7 so that they are equally spaced circumferentially and parallel to the rotating shaft 13. They can rotate freely upside down by themselves and each have a stopper member 9 that stops the rotation. 10 shows the inverted state of each of the blades 8 as they automatically rotate from a lying down state to an upright state under the force of the water current, until they obtain the force to rotate the rotor 7. When the stopper member 9 of each blade 8 collides with the outer periphery of the body of the rotor 7 (the outer periphery of each frame plate 17), the blade 8 reaches a completely upright state, and the rotational force of the rotor 7 reaches a maximum.

[0038] (Attaching multiple blades to a rotor) Here, a method for attaching each of the plurality of blades 8 to the outer periphery of frame plate 17 will be described in detail. The blades 8 are attached to the outer periphery of the frame plate 17 so as to be located at the center in the width direction of the frame plate 17. For this purpose, although detailed illustration is omitted, blade mounting metal fittings are provided at the center in the length direction of each of the center partition plate portion 17b that separates the two window portions 18, 18 of the frame plate 17, the upper frame plate portion 17a that contacts the upper window portion 18, and the lower frame plate portion 17c that contacts the lower window portion 18, and these three blade mounting metal fittings are loosely bolted to the lower ends of the three stopper members 9 provided at three locations, respectively, at the top, center, and bottom of the blade 8, in a manner that allows the blade 8 itself to rotate. The stopper member 9 has a long and narrow plate shape, and also serves as a reinforcing rib for the blades 8 .

[0039] Furthermore, at the lower end of the stopper member 9, there is a collision piece 39 (see Figure 10) which collides with the outer peripheral surfaces of the upper frame plate portion 17a, the central partition plate portion 17b, and the lower frame plate portion 17c of the frame plate 17, and acts as a stopper to stop the automatic rotation of the blades 8 caused by the water flow. The collision piece 39 is formed so as to protrude outward in the width direction from the position of the bolt connection of the stopper member 9. As a result, when the impactor 39 hits these surfaces, the blade 8 stops rotating and is temporarily fixed at a position perpendicular to these surfaces. In this fixed and upright position, the blade 9 receives the maximum force of the water flow 3, causing the rotor 7 to rotate counterclockwise in Figure 10 (see the arrow. For details, see Reference 1).

[0040] (Dust collector unit frame) Next, the dust remover unit frame 10 will be described with reference to Figs. The dust collector unit frame 10 surrounds the water wheel type dust collector 20 (an integrated assembly of a rotor 7 and multiple blades 8) and is used to assemble the entire unit, including the frame 10, as the water wheel type dust collector unit 2, and to position and install this unit within the float type hydroelectric power generation device 1. A metallic U-shaped tube is used as the material for the frame rod that constitutes the frame 10. This also applies to the other frames.

[0041] As shown in Figures 14 and 16, the dust remover unit frame 10 is composed of an upper frame rod assembly 14a, a lower frame rod assembly 14b, and a frame rod structure 28 formed by combining other frame rods. Here, the upper frame rod assembly 14a and the lower frame rod assembly 14b are T-shaped in plan view, and the horizontal side of the T is particularly composed of a pair of two frame rods. As already mentioned, the upper shield plate 11a and the bearing 12 are fixed to the front and back sides of the upper frame rod assembly 14a with their respective faces facing each other, and similarly, the lower shield plate 11b and the bearing 12 are fixed to the front and back sides of the lower frame rod assembly 14b with their respective faces facing each other. These components as a whole form an upper frame rod-shield plate-bearing integrated assembly 19a (see FIG. 15 in particular) and a lower frame rod-shield plate-bearing integrated assembly 19b, respectively. Hereinafter, these components will be referred to as the upper frame rod integrated assembly 19a and the lower frame rod integrated assembly 19b, respectively. These components have the same structure, and are used with the same faces facing each other in actual use (see FIG. 3 and FIG. 4). In addition, the upper shield plate 11a and the lower shield plate 11b are each provided with an outlet 15 for the flowing water of the cleaned water channel 6 by punching.

[0042] The frame rod structure 28 is a frame rod structure consisting of a plurality of frame rods having spaces for receiving the upper frame rod integral assembly 19a and the lower frame rod integral assembly 19b, and is U-shaped in plan view, with the first and second stages of the two-stage structure being connected and assembled by a total of five vertical frame rods, one of which is disposed in the center of the bottom side of the U-shape in plan view. The frame rods on both sides of the first stage (lowest stage) of the U-shape in plan view are each made up of a pair of two frame rods.

[0043] Then, the lower frame rod etc. integrated assembly 19b is fitted into the first stage of this frame rod structure 28, and the upper frame rod etc. integrated assembly 19a is fitted into the second stage. The frame body 10 is completed by bolting the points where the three points of each T-shape of the lower frame rod assembly 14b and the upper frame rod assembly 14a abut against the opposing sides (see Figure 14). Therefore, when the dust remover unit frame 10 is completed in this manner, the upper shield plate 11a and the lower shield plate 11b are automatically positioned and fixed.

[0044] (Incorporating a waterwheel-type dust collector into the dust collector unit frame) Next, a method for assembling the water wheel type dust remover 20 into the dust remover unit frame 10 thus constructed will be described in detail. When assembling the water wheel type dust remover 20 into the dust remover unit frame 10, first, the frame 10 is in a completed state with the upper frame rod and other integral assembly 19a removed from the frame 10. In this state, the water wheel type dust collector 20 is lowered into the frame body 10 from above, and the lower end of its rotating shaft 13 is inserted into the bearing 12 attached to the integral assembly 19b including the lower frame rod, etc., to position the water wheel type dust collector 20 within the frame body 10.

[0045] Next, the upper frame rod etc. integrated assembly 19a that was removed is lowered into the frame body 10 from above, and the upper end of the rotating shaft 13 of the waterwheel type dust collector 20 is inserted into the bearing 12 attached to the upper frame rod etc. integrated assembly 19a. The upper frame rod etc. integrated assembly 14a, which is also attached to the upper frame rod etc. integrated assembly 19a, is bolted at its respective contact points with the opposing sides, and the upper frame rod etc. integrated assembly 19a is fixed and attached to the frame body 10. In this manner, the water wheel type dust remover 20 is completely positioned, fixed and assembled within the frame 10.

[0046] In addition, the upper shield plate 11a and the lower shield plate 11b further have band-shaped seal rings 29 that are circular in plan view and fixed near their outer periphery on the opposing surfaces thereof (see Figure 14). When the waterwheel type dust collector 20 is completely positioned, fixed and assembled within the frame 10 as described above, the outer periphery surfaces of the upper and lower ends of the body portion (consisting of a connection of 18 frame plates 17) of the rotor 7 of the waterwheel type dust collector 20 are in contact with the inner periphery surfaces of these band-shaped seal rings 29. This prevents garbage from entering the inside of the rotor 7 from the outside and restricts the movement of running water inside and outside the rotor 7, preventing the clean running water inside the rotor 7 from leaking to the outside.

[0047] (Operation of water wheel type dust collector unit) The water wheel type dust remover unit 2 of this embodiment is constructed as described above and operates as follows. When the multiple blades 8 of the water wheel type dust collector 20 rotate together with the rotor 7 toward the downstream side of the water flow, they are pushed by the water flow and rotate until the stopper member 9 hits the outer circumferential surface of the body of the rotor 7, and when they are fixed in that position, they receive the water flow and generate a rotational force that rotates the rotor 7. When the blades 8 rotate together with the rotor 7 toward the upstream side of the water flow, they rotate in the opposite direction due to the resistance of the water flow, and are automatically displaced to an angle position that offers the least resistance to the water flow. As is clear from the above, the outer peripheral surface of the body part of the rotating body 7 refers to the outer peripheral surfaces of the upper frame plate portion 17a, the central partition plate portion 17b, and the lower frame plate portion 17c of each frame plate 17 that constitutes the body part of the rotating body 7.

[0048] Now, while the blades 8 are obtaining the torque to rotate the rotor 7 as described above and rotating the rotor 7, the water flowing in the waterway 6 coming from the left side in FIG. 1 collides with the rotor 7 and acts to cause the rotor 7 to continue rotating further, and also passes through the screen 27 stretched over the body of the rotor 7 and flows into the rotor 7. At this time, the garbage that has flowed with the running water is trapped by the screen 27 and the blades 8. Then, a portion of the running water that has flowed into the inside of the rotor 7 passes through the inside of the rotor 7, passes through the screen 27 again, exits the rotor 7, and flows out downstream of the waterway 6.

[0049] At this time, in the portion of the screen 27 that is stretched over almost the entire body of the rotor 7, located downstream of the water flow 6, as the flowing water passes through the screen 27 and flows out of the rotor 7, it backwashes the screen 27 and the blades 8, peeling off and separating the garbage trapped therein, and removing it by causing it to flow downstream of the waterway 6 together with the flowing water. In addition, the running water flowing outside the rotor 7 also pulls the garbage trapped in the blades 8 away from the blades 8 and removes it by flowing it downstream along with the running water in the waterway 6. In this way, the garbage (dust) that has flowed along with the running water in the waterway 6 is removed.

[0050] In addition, the remaining flowing water flowing inside the rotor 7, like some of the flowing water, passes through the screen 27 and is cleaned of debris. This flowing water then flows out of the outlets 15 provided in the upper shield plate 11a and the lower shield plate 11b, which open toward the upper and lower parts of the interior of the rotor 7, and flows into the duct 24 from the upper water intake duct portion 24a1 and the lower water intake duct portion 24a2 of the hydroelectric generator unit 3, causing the water turbine 21 installed in the duct 24 to rotate smoothly without being obstructed by debris.

[0051] (Overall structure and operation of hydroelectric generator unit) Next, the overall structure and operation of the hydraulic generator unit 3 of this embodiment will be described in detail with reference to FIG. 1 and FIGS. The hydroelectric generator unit 3 of this embodiment constitutes the other of the constituent units of the unit assembly 5, and as shown in Figures 1 and 7, its duct 24 is made up of three duct portions in the longitudinal direction: a front duct portion 24a, a central duct portion 24b, and a rear duct portion 24c.

[0052] Here, the front duct portion 24a is further branched upward and downward to comprise two water intake duct portions, an upper water intake duct portion 24a1 and a lower water intake duct portion 24a2, and these upper water intake duct portion 24a1 and lower water intake duct portion 24a2 are respectively connected to the upper outlet 15 and lower outlet 15 of the water wheel type dust collector unit 2 so that their interiors communicate with each other. The detailed structure of each connecting portion will be described in detail later in the sections explaining the frame 30 of the unit assembly 5 and the attachment of each unit 2, 3 to the frame 30. Therefore, the flowing water in the waterway 6, which has been cleaned of garbage by the waterwheel type dust collector unit 2, can flow out in two separate streams from the waterwheel type dust collector unit 2, reducing stagnation in the flow path and smoothing the flow of the flowing water.

[0053] Moreover, the central duct portion 24b is a cylindrical duct portion, in which the water turbine 21 is installed. The water turbine 21 rotates smoothly without being obstructed by debris due to the clean water flowing through the duct section here in the waterway 6, and the rotation is transmitted to the generator 23 via the power transmission shaft 22, where hydroelectric power is generated. The power transmission shaft 22 passes through the cylindrical wall of the duct section here with a shaft seal and extends to the generator 23.

[0054] Furthermore, the rear duct portion 24c is a duct portion that diverges in size toward the rear, and has a shape that is expected to produce the Coanda effect. Therefore, the flowing water flows along the curved surface of the widening duct, and the water pressure decreases as the opening area of ​​the duct increases. As a result, a force is generated to suck the cleaned flowing water in the waterway 6 from the upper outlet 15 and the lower outlet 15 into the diverging duct portion 24c, thereby improving the suction height (effective head) of the water turbine 21.

[0055] (Frame of unit assembly, installation of each unit) As shown in Figs. 1, 7, 17 and 18, the water wheel type dust remover unit 2 and the hydroelectric generator unit 3 are each positioned and attached to a frame 30 of a unit assembly 5 which is an integrated assembly of these units. As shown in Figures 17 and 18, the frame body 30 is generally made up of two parts: a relatively low frame rod structure 30a, which is framed in a two-stage configuration with the second stage framed in a U-shape in plan view, and a relatively high frame rod structure 30b, which is framed in an area occupying about the rear two-thirds of the length of the frame body 30. These are connected and integrated by sharing the long frame rods on the left and right of the lowest stage. Therefore, the water wheel type dust remover unit 2 is positioned and attached to the upper part of such a frame structure 30a, and the hydroelectric generator unit 3 is positioned and attached inside such a frame structure 30b.

[0056] Next, the method of mounting each unit on the frame 30 will be described in more detail. First, a method for mounting the hydroelectric generator unit 3 to the frame 30 will be described with reference to Figure 17. Figure 17 shows the completed mounting state. A normal mounting method may be used to mount the hydroelectric generator unit 3 on the frame 30, but it is necessary to ensure that the power transmission shaft 22 extending through the cylindrical wall of the central duct portion 24b is not damaged by the multiple vertical and horizontal frame rods. For this purpose, for example, first, a total of two horizontal frame rods 37 located at the center and front or center and rear of the upper part of the frame rod structure 30b are removed, and then the assembly and installation work is performed. A total of five horizontal frame rods 34 on the lower part are used to place and support the hydroelectric generator unit 3.

[0057] Next, a method of mounting the water wheel type dust remover unit 2 to the frame 30 will be described with reference to Fig. 18. Note that Fig. 18 shows a state in which the mounting is completed. To attach the water turbine type dust remover unit 2 to the frame 30, first, the upper water intake duct portion 24a1 is removed from the hydroelectric generator unit 3 in the state shown in Fig. 17. Next, in this state, the water turbine type dust remover unit 2 is lowered downward from a position directly above the frame rod structure 30a and placed on the upper portion (more specifically, the upper surface of the second-stage U-shaped frame rod structure portion 30a1 in plan view, with reference to Fig. 17). Next, the tip portion of the lower water intake duct portion 24a2 of the hydroelectric generator unit 3 is connected to the lower outlet 15 (see Figs. 14 and 16) of the water turbine type dust remover unit 2, and connected in a watertight manner. Next, the upper water intake duct portion 24a1 that was removed is returned to the front duct portion 24a and connected watertight, and its tip portion is connected to the upper outlet 15 of the water wheel type dust remover unit 2 and connected watertight. Finally, the water wheel type dust remover unit 2 is accurately positioned on the top of the frame structure 30a, and then attached and fixed by bolting at required locations.

[0058] Incidentally, the water wheel type dust remover unit 2 is placed on the upper part of the frame structure 30a in the following manner. That is, the first-stage U-shaped frame rod structure portion of the frame rod structure 28 (see FIG. 16) of the dust remover unit frame 10 is placed on the top of the frame rod structure 30a and comes into surface contact with it, but in this case, the "U-shaped frame rod structure portion in plan view" uses only the inner frame rod of the two frame rods that make up each of the frame rods on both sides. As a result, the frame rod structure portions between the inner frame rod and the outer frame rod protrude to both sides from the area of ​​the frame 30 of the unit assembly 5 (see also FIGS. 5 and 6). In this way, it is possible to avoid an increase in size of the frame 30.

[0059] (Overall structure and operation of the float) Next, the overall structure and operation of the float 4 of this embodiment will be described in detail with reference to Figures 1 to 7 and Figures 17 to 20. Note that in Figures 19 and 20, the illustration of the frame 30 of the unit assembly 5 is simplified. As shown in Figures 1 to 7, the float 4 of this embodiment is composed of a left float 4a with an elongated, streamlined shape and a rectangular cross-section, and a right float 4b of the same shape, which are connected by multiple connecting rods 25 and assembled together. Furthermore, one point slightly rearward of the fore-and-aft center of the lower edge of each of the opposing inner wall panels 33a, 33b of the left float 4a and the right float 4b, and one point at the rear end thereof, are connected to a left upper vertical frame rod 31 and a right upper vertical frame rod 32 provided at the front and rear ends, respectively, of the upper left and right parts of the frame rod structure 30b that forms part of the frame body 30, as better shown in Figures 1, 19 and 20, so that the float 4 can hold the unit assembly 5 in a floating state in the waterway 6.

[0060] In this case, one of the rear ends of the lower edges of each of the wall panels 33a, 33b is extended rearward by a relatively small width to form frame-rod-shaped, elongated plate portions 35a, 35b, whose tips are connected to the upper ends of the left-side upper vertical frame rod 31 and the right-side upper vertical frame rod 32, respectively, so that the load of the rear part of the unit assembly 5 is shared by the float 4. As described above, the upper ends of the left-side upper vertical frame rod 31 and the right-side upper vertical frame rod 32 are connected to each other by the tips of the elongated plate portions 35a, 35b, which are then connected to the upper ends of the left-side upper vertical frame rod 31 and the right-side upper vertical frame rod 32, respectively, and then connected by the connecting rod 38, which forms a horizontal frame rod.

[0061] Further, the left float 4a and the right float 4b are provided with rudder plates 26 attached integrally to the rear end portions of the bottom wall plates of the respective left and right floats 4a, 4b at symmetrical positions. This allows the float type hydroelectric generating device 1 to be constantly positioned along the flow path of the water flowing through the water channel 6, and its posture can be stabilized.

[0062] (Effects of the embodiment) The float type hydroelectric generating device 1 of this embodiment is configured as described above, and therefore can provide the following effects. In the float type hydroelectric power generation device 1 of this embodiment, the water wheel type dust collector unit 2 and the hydroelectric generator unit 3 are integrally assembled to form a unit assembly 5, and the float 4 is connected to the frame 30 of this unit assembly 5 to hold the unit assembly 5 in a floating state on the waterway 6. Therefore, as long as the device is in a mountainous or plain area that has a waterway suitable for hydroelectric power generation with sufficient flow rate and head, the device can be easily transported and installed anywhere, either as is or by disassembling it into several parts, as appropriate, and its convenience is greatly improved. Furthermore, if electrification can be achieved through the use of this hydroelectric power generation system in many aspects of production activities and daily life in areas such as these, where depopulation and aging are progressing and the maintenance and operation of gas stations is in jeopardy, it will be possible to maintain and improve the efficiency of production activities and the quality of daily life, thereby contributing to the resolution of social problems.

[0063] In addition, in this float-type hydroelectric power generation device 1, a duct 24 in which the water turbine 21 of the hydroelectric generator unit 3 is installed is connected to the outlet 15 of the water turbine type dust collector unit 2, so that the flowing water of the waterway 6, which has been cleaned by removing garbage (dust), flows into the duct 4 through the outlet 15 and can rotate the water turbine 21.The water turbine 21 can rotate smoothly and continue generating power without being obstructed by garbage, so stable power can be obtained and its utilization efficiency improved.

[0064] The waterwheel type dust collector unit 2 is arranged so as to be sandwiched between an upper shield plate 11a and a lower shield plate 11b, and a screen 27 for trapping garbage is provided over almost the entire area of ​​the rotating cylindrical body. The rotor 7, which has an 18-sided cylindrical shape, rotates automatically by the force of the water flow that acts on a plurality of blades 8 provided on the outer periphery of the body of the rotor 7. Therefore, garbage (debris) such as grass, tree branches and leaves that flow from the upstream of the waterway 6 and are trapped by the screen 27 and blades 8 are automatically carried to the downstream side of the waterway 6 by the rotation of the rotor 7, where they are peeled off and separated from the screen 27 and blades 8 by some of the flowing water flowing inside the rotor 7 and the flowing water flowing outside the rotor 7, and are then carried downstream of the waterway 6 together with the flowing water and removed. Therefore, no externally powered device such as a rake is required to remove the garbage trapped in the screen 27 or the blades 8, and the garbage can be automatically removed without power from the flowing water of the waterway 6 that flows from inside the rotor 7 through the upper outlet 15 and the lower outlet 15 provided in the upper shield plate 11a and the lower shield plate 11b, respectively, and into the duct 4 in which the waterwheel 21 is installed. Also, no special garbage processing device is required to process the removed garbage. Furthermore, these features simplify the structure of the waterwheel type dust collector unit 2, and it can be easily installed in the waterway 6.

[0065] In addition, because of this structure, when the speed of the water flowing in the waterway 6 changes, the rotation speed of the rotor 7 also changes automatically. Therefore, even if the water in the waterway 6 rises due to rain or other reasons and the amount of garbage flowing in increases, the rotation speed of the rotor 7 also increases, and the amount of garbage carried downstream also increases, so garbage does not accumulate on the rotor 7.

[0066] Moreover, the upper shield plate 11a and the lower shield plate 11b are provided with band-shaped seal rings 29, which are circular in plan view, fixed to the opposing surfaces of the upper and lower shield plates 11a and 11b near their outer peripheries, so that the inner peripheries of the band-shaped seal rings 29 are constantly in contact with the outer peripheries of the upper and lower ends of the body of the rotor 7 of the waterwheel type dust collector 20. This makes it possible to prevent dust from entering the rotor 7 from the outside, and also to restrict the movement of running water between the inside and outside of the rotor 7, thereby reducing the leakage of clean running water from inside the rotor 7 to the outside, improving power generation efficiency.

[0067] In addition, the upper water intake duct portion 24a1 and the lower water intake duct portion 24a2 of the front duct portion 24a of the hydroelectric generator unit 3 are connected to the upper outlet 15 and lower outlet 15 of the hydroelectric generator unit, respectively, so that the flowing water in the waterway 6, from which garbage has been removed and which has been cleaned, is split into two flow paths and flows from the hydroelectric generator unit 2 into the hydroelectric generator unit 3 and is sucked in.This makes the flow path of the flowing water smoother and reduces stagnation and turbulence, improves the suction height (effective head) of the hydroelectric generator unit, and increases the power generation efficiency.

[0068] In addition, the hydroelectric generator unit 3 has a rear duct portion 24c which is a divergent duct portion, and due to the Coanda effect, a force is generated which draws the cleaned flowing water in the waterway 6 from the upper outlet 15 and lower outlet 15 of the hydroelectric generator unit 3 into the divergent duct portion. This also improves the suction height of the hydroelectric generator unit 21, thereby improving power generation efficiency.

[0069] Furthermore, the floats 4 are made up of a left float 4a and a right float 4b, and the left float 4a and the right float 4b are integrally provided with rudder blades 26 at symmetrical positions on the rear ends of the left and right floats 4a and 4b, respectively, so that the influence of wind on the floats 4 can be reduced, and the float type hydroelectric generating device 1 can be always positioned along the flow path of the running water in the waterway 6. As a result, the attitude of the float type hydroelectric generating device 1, and hence its operation, can be stabilized.

[0070] The present invention is not limited to the above-described embodiments, and various modifications are possible without departing from the spirit and scope of the present invention. For example, in the float type hydroelectric power generation device 1 of the embodiment, the unit assembly 5 (consisting of an integral assembly of the waterwheel type dust collector unit 2 and the hydroelectric generator unit 3) is used while being held floating in the waterway 6 by the float 4, but it is also possible to use it by installing it fixedly on the riverbed of the waterway 6 without using the float 4. In this case, however, the effect of being easy to transport and install at a desired location having a waterway suitable for hydroelectric power generation is somewhat sacrificed. [Explanation of symbols]

[0071] 1...float type hydroelectric power generation device, 2...water wheel type dust collector unit, 3...hydroelectric generator unit, 4...float, 4a...left side float, 4b...right side float, 5...unit assembly, 6...waterway, 7...rotating body, 8...blade, 9...stopper member, 10...dust collector unit frame, 11a...upper shield plate, 11b...lower shield plate, 12...bearing, 13...rotating shaft, 14a...upper frame rod assembly, 14b...lower frame rod assembly, 15...outlet (upper outlet, lower outlet), 16a-16c...connecting ring, 17...frame plate, 17a...upper frame plate portion, 17b...central partition plate portion, 17c...lower frame plate portion, 18...window portion, 19a...upper frame rod etc. integrated assembly, 19b...lower frame rod etc. integrated assembly, 20...water wheel type dust collector, 21 ... water turbine, 22... power transmission shaft, 23... generator, 24... duct, 24a... forward duct portion, 24a1... upper water intake duct portion, 24a2... lower water intake duct portion, 24b... central duct portion (cylindrical duct portion), 24c... rear duct portion (divergent duct portion), 25... connecting rod, 26... rudder plate, 27... screen, 28... frame rod structure, 2 9...Striped seal ring, 30...Unit assembly frame, 30a...Frame rod structure, 30a1...Frame rod structure part, 30b...Frame rod structure, 31...Left upper vertical frame rod, 32...Right upper side Vertical frame rod, 33a, 33b...inner wall board, 34...horizontal frame rod, 35a, 35b...frame rod-like elongated plate portion, 36...connecting rod, 37...horizontal frame rod, 38...connecting rod (horizontal frame rod), 39...collision element.

Claims

1. A float-type hydroelectric power generation device is installed in an open waterway such as a small or medium-sized river or an agricultural waterway, The waterway is provided with a waterwheel type dust collector unit for removing garbage from the flowing water in the waterway, a hydroelectric generator unit, and a float; the water wheel type dust collector unit and the hydroelectric generator unit are integrally assembled into a unit assembly, with the water wheel type dust collector unit on the upstream side of the waterway and the hydroelectric generator unit on the downstream side of the waterway; a duct in which the water turbine of the hydroelectric generator unit is installed is connected to an outlet provided in the water turbine type dust collector unit, through which the cleaned water flowing through the water channel after the removal of garbage flows out, so that the cleaned water flowing through the water channel flows into the duct through the outlet to rotate the water turbine, The float is coupled to the unit assembly to floatingly hold the unit assembly in the waterway. A float type hydroelectric power generation device.

2. The water wheel type dust collector unit is a rotating body having a polygonal or circular cylindrical shape, which is disposed so as to be sandwiched between an upper shield plate having a circular shape in a plan view and a lower shield plate having the same shape, and a screen for trapping dust is provided over substantially the entire area of ​​the rotating cylindrical body, and the upper and lower ends of the rotating shaft are supported by bearings provided at the upper and lower parts of the dust collector unit frame, respectively, to be rotatably held; a plurality of blades that rotate the rotor by receiving the force of the water flow, the plurality of blades being provided on the outer periphery of the body of the rotor at equal intervals in the circumferential direction and parallel to the rotation axis, the plurality of blades being freely inverted and having a stopper member that stops the rotation, The upper shield plate and the lower shield plate are provided with the outlets, and are defined as an upper outlet and a lower outlet, respectively; When the blades rotate together with the rotor toward the downstream of the water flow, the blades are pushed by the water flow and rotate until the stopper member hits the outer periphery of the body of the rotor. When the stopper member is fixed in that position, the blades receive the water flow and generate a rotational force that rotates the rotor. When the blades rotate together with the rotor toward the upstream of the water flow, they rotate in the opposite direction due to the resistance of the water flow, and are automatically displaced to an angle position that provides the least resistance to the water flow. The garbage that flows from the upstream of the waterway and is trapped by the screen and the blades is carried to the downstream side of the waterway by the rotation of the rotor, and is peeled off and separated by a part of the flowing water flowing inside the rotor and a part of the flowing water flowing outside the rotor, and is discharged downstream of the waterway together with the flowing water to be removed.

2. The float type hydroelectric power generating device according to claim 1 .

3. The hydroelectric generator unit comprises: The duct is composed of three duct sections in the length direction: a front duct section, a central duct section, and a rear duct section; The front duct portion is branched into upper and lower portions, and is composed of two water intake duct portions, an upper water intake duct portion and a lower water intake duct portion, and these upper water intake duct portion and lower water intake duct portion are respectively connected to the upper outlet and the lower outlet of the water wheel type dust collector unit, so that the interiors of the respective portions are in communication with each other; The central duct portion is a cylindrical duct portion, in which the water turbine is installed, The rear duct portion is a divergent duct portion whose dimensions increase toward the rear, and a force is generated by the Coanda effect to suck the cleaned water flowing through the waterway from the upper outlet and the lower outlet into the divergent duct portion.

3. The float type hydroelectric power generating device according to claim 2.

4. The float is When viewed in the upstream direction of the waterway, a left float having an elongated streamlined shape and a right float having the same shape are connected by a plurality of connecting rods and integrally assembled, The left and right floats are connected to the left and right upper frame rods of the frame of the unit assembly, respectively, to hold the unit assembly in a floating state in the waterway.

4. A float type hydroelectric generating device according to claim 1, wherein the float type hydroelectric generating device is a floating type hydroelectric generating device.

5. The left and right floats are provided with rudder blades at symmetrical positions on the rear end of each float.

5. The float type hydroelectric power generating device according to claim 4.

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