JP2011094522A - Small-scale power generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small-scale power generator which is easily arranged in various places in different heights and is improved in practicality. <P>SOLUTION: This small-scale power generator 10 includes: a vertical pipe body 12 internally formed with a flow passage 20 with water W ran down in a vertical direction and provided with a water guide section 26 and an outflow section 28 respectively formed at the upper end and the lower end; a water turbine 14 provided on the lower side of the flow passage 20 in the vertical pipe body, having a rotating shaft 42 vertically arranged along the vertical axis direction of the vertical pipe body, and horizontally rotated around the rotating shaft by receiving water vertically ran down; a generator 16 connected to the rotating shaft 42 of the water turbine 14 and generating electricity in conjunction with the rotation of the water turbine 42; and a water guide portion position adjustment mechanism 18 elongating and contracting the vertical pipe body 12 in order to change the height position of the water guide portion 26 with respect to the water turbine 14 and adjusting the height position of the water guide portion 26 according to the difference in the height of a difference on level. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a small-scale power generation device that can generate power using a flow of water at a level difference with a small height difference.

  Hydropower, which uses water flow for power generation, is known to be renewable, have no greenhouse gas emissions during power generation, have a low environmental impact, and can generate power more stably than solar or wind power generation. Yes. However, large-scale hydroelectric power generation facilities need to use a large-scale water source such as a large dam, and there are few sites suitable for dam construction, making it difficult to secure a place, and enormous construction and operation costs. There are various problems, such as the impact on the surrounding rivers and ecosystems, and the danger of environmental destruction. Therefore, the development of small-scale hydroelectric power generation facilities that can generate electricity using relatively small elevation sources such as small rivers, reservoirs, and agricultural waterways is expected.

  For example, Patent Document 1 discloses a technique related to a small hydroelectric power generation facility installed at a gate of a gate that opens and closes an irrigation gate or the like. In Patent Document 1, an impeller rotatably accommodated in a casing, a main shaft to which the impeller is fixed, and a generator that is rotationally driven by the main shaft are provided, and the rotating shaft and main shaft on the generator side are provided in the casing. They were connected to each other so as to be interlocked with each other through orthogonal transformation power accommodated in the inserted gear case.

JP 2002-303240 A

  Although it is a small-scale hydroelectric power generation facility that is expected to be applied to various places, the topographic conditions and installation environment including the height difference at which water flows are different depending on the site. Therefore, it is necessary to investigate and analyze the site in advance in advance, and to design the hydroelectric power generation equipment corresponding to the level difference from the beginning, the number of parts increases, the work becomes complicated, and it takes a lot of labor and labor. In addition to the high cost, there is a problem in that since the power generation device is small, an output corresponding to the cost cannot be obtained and the economy is deteriorated. Moreover, since fallen leaves, garbage, etc. that flow along with the water flow in, the power generation efficiency is liable to decrease or break down due to them, and frequent maintenance is required. Further, as disclosed in Patent Document 1, since the rotating shaft on the generator side, the main shaft of the impeller, and the orthogonal transformation power including a plurality of gears are linked, the structure is complicated and the manufacturing cost is increased, and the gear is increased. Loss was generated due to friction and the like, and the efficiency was reduced.

  The present invention has been made in view of the above-described conventional problems, and one object of the present invention is to provide a small-scale power generation device that can be easily installed in various places with different height differences in a small-scale power generation device and has improved practicality. It is to provide. Another object of the present invention is to provide a small-scale power generation apparatus that can prevent inflow of fallen leaves, dust, etc. to prevent a decrease in efficiency or a failure.

  In order to solve the above problems, the present invention is a small-scale power generation device that generates power using the flow of water at a step DG with a small height difference, and has a flow path 20 in which water W flows down in the vertical vertical direction. The vertical pipe body 12 is formed at the upper end, the water guide section 26 is provided at the upper end, and the outflow section 28 is provided at the lower end, and is provided on the lower side of the flow path 20 inside the vertical pipe body, along the vertical axis direction (T) of the vertical pipe body. The rotating shaft 42 is arranged vertically, and the turbine 14 that receives the water flowing vertically and rotates horizontally around the rotating shaft and the rotating shaft 42 of the turbine 14 are connected to the rotating shaft 42, and power generation is generated in conjunction with the rotation of the turbine 42. The water guide position where the vertical pipe body 12 is expanded and contracted so as to change the height position of the water guide section 26 with respect to the machine 16 and the water wheel 14, and the height position of the water guide section 26 is adjusted in accordance with the height difference of the step DG. And a small-scale power generation apparatus 10 characterized by comprising an adjustment mechanism 18 It is.

  Further, the water guide position adjusting mechanism 18 may be configured such that the vertical pipe 12 is configured as a multiple pipe structure.

  Further, the outflow portion 28 includes a bent pipe portion 24 having a flow path bent so that the water W flowing down from the water wheel 14 flows laterally, and the generator 16 is located outside the vertical pipe body 12 and below the bent pipe portion 24. It is good also as installing in the vicinity and extending the rotating shaft 42 of the water wheel 14 linearly downward, penetrating the bending pipe part 24, and connecting with the generator 16. FIG.

  Further, the water wheel 14 has a plurality of blades fixed at predetermined intervals around the rotation shaft 42, and the plurality of blades generate water so as to generate a rotational force around the rotation shaft 42 when receiving the flowing water W. It is composed of a plurality of deformed rectangular parallelepiped box-shaped blades 44 arranged obliquely with respect to the flow-down direction, and each box-shaped blade 44 opens an upper surface so as to receive water flowing down from above into the box-shaped recess. 50, and the opening 58 may be provided on the inclined lower side so that the water received in the box-shaped recess 58 flows out.

  Further, a tapered throttle portion 60 that guides the water W flowing down the flow path 20 of the vertical tubular body 12 to the upper surface opening 50 of the box-shaped blade 44 may be provided above the box-shaped blade 44.

  Further, the water guide section 26 may be provided with a dust collection device 36 that removes dust from the water introduced into the vertical tube body 12.

  In addition, the dust collecting device 36 is formed in a size larger than the cross-sectional area of the vertical tube body 12, which communicates with the vertical tube body 12, is surrounded by a side wall 32, and is formed with a water introduction opening 31. The water guide case 30, the dust trapping net 36 installed in the water guide case 30 and inclined with respect to the direction in which the water W flows down, and the side wall 31 of the water guide case 30 penetrating laterally toward the downward inclined end 36 a side of the dust trapping net 36. In addition, it is also possible to include a lateral hole 38 through which the dust trapped by the dust trapping net 36 flows out together with the overflow water FW when water of a predetermined level or more accumulates in the water guiding case 30.

  According to the present invention, it is a small-scale power generation device that generates power using the flow of water at a small level difference in height, the flow path in which water flows down in the vertical vertical direction is formed, and the water guide section is formed at the upper end. A vertical tube with an outflow part at the lower end, and a vertical axis located along the longitudinal axis of the vertical tube along the longitudinal axis of the vertical tube to receive water that flows vertically A turbine that rotates horizontally around the rotation shaft, a generator that is connected to the rotation shaft of the turbine and generates power in conjunction with the rotation of the turbine, and a vertical pipe that changes the height position of the water guide section relative to the turbine. It has a water guide position adjustment mechanism that can be expanded and contracted to adjust the height position of the water guide section in accordance with the difference in level of the level difference. When installing the height of the water conveyance section corresponding to the difference in level difference depending on various sites Available and easy to install while integer. In addition, when transporting or storing the power generation device, it can be reduced to a compact configuration and does not take up space. Therefore, the entire installation process including the installation work from transportation to the site can be performed easily and smoothly, and the installation location is not easily limited. In addition, since the device structure is simple, it can contribute to the reduction of installation cost, and the practicality and utility value can be improved. In addition, since the water introduced from the water conduit is applied to the water turbine while flowing vertically in the vertical pipe, the water turbine does not disperse and the water turbine is operated with relatively little energy loss due to friction, bending resistance, etc. Since it can be driven, efficient power generation can be expected even with a small and simple configuration.

  In addition, the water conveyance unit position adjusting mechanism has a simple structure and the height position can be easily adjusted by configuring the vertical pipe as a multi-pipe structure. In the flow path of the vertical pipe, It is possible to realize a water guide position adjusting mechanism that is easy to use and does not disturb the flow of water.

  In addition, the outflow part includes a bent pipe part having a flow path bent so that the water that has flown down from the water wheel flows sideways, and the generator is installed on the outer side of the vertical pipe and close to the lower side of the bent pipe part. In this configuration, the rotating shaft is linearly extended downward and penetrated through the bent tube portion to be connected to the generator, so that there is no need to provide a complicated conversion mechanism between the rotating shaft of the turbine and the generator. The connecting structure between the rotating shaft and the generator has a simple and simple structure, so that the device can be manufactured at low cost, and the efficiency can be maintained with little conversion loss from the turbine to the generator.

  In addition, the water wheel has a plurality of blades fixed at predetermined intervals around the rotation axis, and the plurality of blades generate a rotational force around the rotation shaft when receiving the flowing-down water. The box-shaped blades are open at the top so as to receive the water flowing down from above into the box-shaped recess, and the box-shaped recess. By having a configuration in which the inclined lower side is opened so that the water received in the inside flows out, the water turbine is driven to rotate while the water is obliquely received by the box-shaped recess of the box-shaped blade, and the vertical water is driven. The blade structure of the water turbine that rotates smoothly using the flow can be specifically realized. Further, the water wheel can be manufactured with a simple structure.

  In addition, a taper-shaped throttle portion that guides water flowing down the flow path of the vertical tube body to the upper surface opening of the box-shaped blade is provided above the box-shaped blade, so that the flow path of the vertical tube body It is possible to generate electricity efficiently by causing the water flowing down the water to act on the box-shaped blades and rotating the water wheel.

  In addition, the water transfer section is equipped with a dust collection device that removes dust from the water introduced into the vertical tube body, so that the fallen leaves and dust that flow with the water are removed at the introduction section of the power generator. As a result, only water can be poured into the flow path, and a reduction in rotation efficiency or failure due to dust can be prevented.

  Further, the dust collecting device is formed in a size that is larger than the cross-sectional area of the vertical pipe body and is connected to the vertical pipe body, surrounds the periphery with a side wall, and has a water introduction opening formed with a water introduction opening, A dust trapping net that is installed in the case and is slanted with respect to the direction in which the water flows down, and is penetrating laterally to the downward sloping end side of the dust trapping net on the side wall of the water guiding case. It includes a horizontal hole that allows the trash captured by the trash catching net to flow out together with the overflow water as it accumulates, so that the trash captured when the water rises overflows while capturing the trash from the water that continuously flows through the trash catching net. Can be removed by flushing with water. Furthermore, the water conveyance case formed to be larger than the vertical pipe body can realize a structure capable of reliably conducting water from the water conveyance section to the vertical pipe body in a satisfactory manner at various installation sites.

It is explanatory drawing of the small power generator concerning one Embodiment of this invention. It is an AA line cross-sectional enlarged view of FIG. FIG. 3 is an enlarged cross-sectional view taken along line BB in FIG. 1. It is CC sectional view taken on the line of FIG. It is a perspective view of the blade of a water wheel. It is action explanatory drawing of the small power generator of FIG. It is explanatory drawing of the example of installation of the small power generator of FIG.

  Embodiments of a small-scale power generator according to the present invention will be described below with reference to the accompanying drawings. The small-scale power generation apparatus according to the present invention is, for example, a small-sized low-head dam, a river, agricultural water, water supply, industrial drainage, etc. A small-scale hydroelectric generator that can be used. 1 to 7 show an embodiment of a small-scale power generator according to the present invention. As shown in FIGS. 1 and 2, in the present embodiment, the small-scale power generation device 10 includes a vertical pipe body 12 in which water taken from the water guide portion flows, and a water wheel 14 provided inside the vertical pipe body 12. A generator 16 connected to the water wheel 14 and a water guide position adjusting mechanism 18 are provided.

  As shown in FIG. 1, the vertical tubular body 12 forms a flow path 20 in which water W flows down in the vertical vertical direction, and is a tubular body through which water can flow continuously. A water guide portion 26 for introducing water into the flow channel 20 is provided at the upper end of the vertical tube body 12, and an outflow portion 28 for discharging the water W that has flowed through the flow channel 20 is provided at the lower end of the vertical tube body 12. It has been. The vertical pipe body 12 accommodates the water wheel 14 on the lower side in the flow path 20 and serves as a housing case body. As shown in FIG. 6, the vertical pipe body 12 flows water into the flow path 20 from the introduction portion 26 at the upper end installed on the high place HP side at a small level difference DG without dispersing the water. The inside of the flow path 20 is vertically guided to act on the water wheel 14, and water flows out from the outflow portion 28 installed in the low place LP. That is, the vertical pipe body 12 has a kind of rectification function or recovery function that arranges and flows the water that acts on the water turbine. As shown in FIGS. 1 and 2, the vertical tube 12 is formed of a hollow cylindrical tube having both ends opened, for example, made of a rigid material such as metal or hard plastic. The vertical tube body 12 is provided with, for example, a straight tube portion 22 that extends substantially linearly in a generally entire manner, and a lower portion thereof is bent in a substantially L shape and a bent tube portion 24 is provided. Yes. The vertical tubular body 12 uses the internal space of the hollow cylindrical tube as a flow path 20, and the lower side is bent so that water flows laterally. In the present embodiment, the vertical tubular body 12 has a double-pipe structure in which, for example, a small-diameter first tubular body 12a and a large-diameter second tubular body 12b are connected so as to be slidable and extendable. The tube portion 22 can freely expand and contract. As shown in FIG. 6, the height position of the introduction portion 26 on the upper end side can be adjusted in a state where the water wheel 14 is disposed at a low position by expanding and contracting the vertical tube body 12. In other words, in the present embodiment, the vertical tube body 12 is configured as a double tube structure, thereby providing the introduction portion position adjusting mechanism 18 that adjusts the height position of the introduction portion 26. Thereby, the height position of the water guide part 26 can be adjusted corresponding to the level difference DG that varies depending on the site, and water can be reliably introduced into the vertical pipe 12 and operated efficiently. The vertical tube body 12 may have a multiple tube structure of a triple tube or more. In addition, the introduction portion position adjusting mechanism 18 may include a fixing device that can fix the vertical tube body 12 with an arbitrary expansion / contraction length.

  In the present embodiment, for example, as shown in FIG. 1, the water guide portion 26 includes a water guide case 30 in which a water guide opening 31 for taking in water is formed on the upper surface side and communicates with the flow path 20 of the vertical tube body 12. The water guide case 30 is a hollow case provided to be larger than the cross-sectional area of the vertical tube body 12, and surrounds the periphery with a side wall 32, and a communication opening 34 that communicates with the vertical tube body 12 at the center of the bottom wall 33. Is formed. The upper end side of the side wall 32 forming the water guide opening 31 is formed so as to expand outwardly in a tapered shape, so that water can be easily introduced even in various on-site environments. Further, the water guide portion 26 is provided with a dust collecting device 36 that removes fallen leaves, dust, and the like flowing together with the water before being introduced into the vertical pipe body 12. The dust collecting device 36 includes, for example, a water guiding case 30, a dust catching net 38 installed in the water guiding case 30, and a lateral hole 40 penetrating laterally through the side wall 32 of the water guiding case 30. The dust trapping net 38 allows only water to pass through while trapping fallen leaves and dust from the water guided from the water guide opening 31 on the upper surface of the water guide case 30 by the mesh structure. The dust trapping net 38 is disposed to be inclined with respect to the water flow. The horizontal hole 40 is formed on the side of the downward sloping end 38a of the dust catching net 38 on the side wall 32, and the lower end of the horizontal hole 40 is set to be substantially the same height as the height of the sloping catching net 38a on the down sloping end 38a side. For example, when a large amount of water flows into the water guide case 30 due to rain and increases, the overflow water FW flows out from the lateral hole 40. Dust collected by the net 38 flows out.

  The outflow portion 28 includes the curved tube portion 24 on the lower side of the above-described vertical tube body 12, and the water after acting on the water turbine 14, that is, the water that has flowed down further below the water turbine 14, It flows out of the vertical tube from the opening. All of the water that has flowed through the vertical pipe body 12 flows out from the outflow portion 28, so that it is possible to generate electricity while collecting the water. For example, the collected water can be effectively used by connecting another pipe, water channel, or the like to the bent pipe portion 28 and drawing it into facilities or facilities that use water.

  As shown in FIGS. 1, 3, and 4, the water wheel 14 is provided on the lower side of the flow path 20, and includes a rotating shaft 42 and four blades ( 44). In the present embodiment, the water turbine 14 is disposed in the straight pipe portion of the first pipe body 12a on the lower side in the vertical pipe body 12 having a double pipe structure. The water turbine 14 has a rotary shaft 42 arranged vertically along the longitudinal axis T direction of the vertical tube body 12, and receives water W flowing vertically through the straight pipe portion 22 of the flow path 20 and horizontally around the rotary shaft. Rotate. That is, the water wheel 14 has an axial flow configuration in which water flows in and rotates in the direction of the rotation axis, and water flows out in the direction of the rotation axis. The rotary shaft 42 is pivotally supported, for example, via an upper shaft support portion 46 fixed at the upper end side inside the vertical tube body 12 and extends linearly at the lower side to penetrate the tube wall of the bent tube portion 24. In this state, it is pivotally supported via the lower pivotal support portion 48. The lower end side of the rotating shaft 42 extends outside the vertical tube 12 and is connected to the generator 16. Note that the lower shaft support 48 is watertight so that water does not leak from the penetrating portion of the rotating shaft 42.

  As shown in FIGS. 3, 4, and 5, in the present embodiment, the blades of the water wheel 14 include, for example, a deformed rectangular parallelepiped box-shaped blade 44 having an upper surface 50. The box-shaped blade 44 is disposed obliquely with respect to the direction in which the water W flows down, that is, with respect to the rotation shaft 42, and generates a rotational force around the rotation shaft 42 when the water W flows down. Specifically, the box-shaped blades 44 are formed in a long and narrow rectangular shape on one side and are arranged obliquely with respect to the rotation shaft 42 and 3 except for a short side that is the inclined lower end side of the bottom plate 52. Three side plates 54 rising from the side are integrally formed, and an upper surface and one side surface are opened (50, 58), and a hollow box-shaped recess 56 is formed inside. The box-shaped blade 44 has a deformed rectangular parallelepiped shape or a parallelepiped shape obtained by inclining and deforming a rectangular parallelepiped with respect to the longitudinal axis. A box-like box configuration having a U-shaped cross-section with an opening 50 is formed. The box-shaped blade 44 is fixed to the rotating shaft 42 by welding or the like on the side plate 54. The bottom plate 52 of the box-shaped blade 44 is a portion that causes rotation around the rotation axis when receiving the flow of water W. As shown in FIG. 4, for example, the rotation axis 42 and the vertical axis T of the vertical tube body. Is set to 45 degrees. Further, as shown in FIG. 3, the bottom plate 52 is attached so as to extend in the rotational tangential direction around the rotation axis in a plan view, and the four box-shaped blades 44 are configured in a substantially bowl shape in the plan view. . As shown in FIGS. 4 and 5, the side plate 54 is erected from the bottom plate 52 substantially in parallel to the water W flowing down the flow path of the vertical tubular body, and the water received by the bottom plate 52 is in the longitudinal direction of the bottom plate. And is guided so as to flow out from the discharge opening 58 on the inclined lower end side. As a result, the box-shaped blade 44 causes the water W flowing down from above to flow into the box-shaped recess 56 through the opening 50 on the upper surface and to act on the bottom plate 52 disposed obliquely, and to flow downward along the bottom plate. However, water flows out from the discharge opening 58 to generate a rotational force around the rotation axis of the water wheel. In addition, the number of blades of the water wheel may be arbitrary, and may be 2, 3, or 5 or more.

  As shown in FIGS. 1 and 2, in the flow path 20 of the vertical tube body 12, a tapered shape that guides water W flowing down in the flow path to the opening 50 on the upper surface of the box-shaped blade 44 on the upper side of the water wheel 14. The aperture portion 60 is provided. As a result, even when the blade structure of the water turbine 14 is constituted by the box-shaped blade 44 as described above, the water passing through the water wheel 14 without acting on the blade is reduced, and the water is reliably supplied. It can be made to act on a box-shaped blade, and the efficiency can be maintained.

  The generator 16 is a generator that generates power in conjunction with the rotation of the water wheel 14. As shown in FIG. 1, in this embodiment, the generator 16 is disposed outside the vertical tube body 12 and is disposed close to the position directly below the bent tube portion 24. And it is connected with the lower end of the rotating shaft 42 which let the bending pipe part 24 penetrate. Since the generator 16 is arranged substantially linearly in the direction of the rotating shaft 42 of the water wheel 14, there is no need to provide a complicated conversion mechanism between the rotating shaft 42 and the generator 16, and the entire apparatus is simplified. While being able to manufacture at low cost, there is no loss due to friction between members in the conversion mechanism, and power generation efficiency can be maintained. The electricity generated by the generator 16 can be used in various ways corresponding to the installation site. For example, when the small-scale power generation device 10 according to this embodiment is installed in an agricultural waterway, the electric fence device 100 that prevents a beast such as a frog or a monkey from entering a field or the like, or a loud sound every predetermined time Used as operating power for other equipment and equipment that protects crops from pests and pests, such as the air cannon device 102 that drives out and drives away birds and beasts, the lighting device 104 that drives out beasts by illuminating light, and insect killing devices that attract and drive insects it can.

  Next, the operation of the small-scale power generation device 10 according to the present embodiment will be described with reference to FIGS. 6 and 7. As shown in FIG. 6, when installing the small-scale power generation apparatus 10 at a small level difference DG in which the water W flows from the high place HP to the low place LP, the vertical pipe body is connected via the water guide position adjusting mechanism 18. 12, the height position of the water guide portion 26 is adjusted in accordance with the height difference of the step DG, and the water guide portion 26 is installed in the vicinity of the water outflow position of the high place HP of the step DG. Since the water guide position adjusting mechanism 16 is composed of a vertical pipe body having a double pipe structure, the structure is simple and the height position of the water guide part 26 can be adjusted easily and smoothly. Furthermore, the structure of the water guide case 30 that is enlarged compared to the vertical pipe body is combined with the water guide section so that water is introduced into the vertical pipe body 12 without waste at a small level difference DG. It can be carried out easily and the workability of the apparatus can be improved. When the small-scale power generation device 10 is installed, the water W from the high place HP of the step DG is introduced into the flow path 20 of the vertical tube body 12 through the water guide portion 26 and flows. At this time, since the dust collecting device is provided in the water conveyance section, it is possible to prevent fallen leaves and dust flowing together with water from entering the standing tube, and it is possible to satisfactorily prevent a failure of the power generation device and a decrease in efficiency. Then, as shown in FIG. 1, the introduced water W flows down in the vertical vertical direction along the flow path 20 in a state of being collected without being dispersed by the vertical pipe body 12, It is rotated and generated by the generator 16. The water that has flowed down from the water turbine 14 flows laterally along the bent pipe portion 24 and flows out from the outflow portion 28. As described above, the small-scale power generation apparatus 10 can be easily installed corresponding to various steps DG having different height differences. As a result, it contributes to a reduction in installation cost, and the application place is not limited, and can be installed in various places. Electricity can be generated efficiently even with a small level water source. For example, FIG. 7 shows an example in which the small-scale power generation device 10 is applied to the step portion of the terraced rice field SR. The small-scale power generation device 10 is installed in the water flow portion for each step DG of the terraced rice field SR, and power can be generated by effectively using the flow of water flowing from the upper paddy field to the lower paddy field. In this case, as shown in FIG. 1, the generator 16 is connected to a pest control device such as an electric fence device 100, an air cannon device 102, a lighting device 104, etc. It is recommended to operate the pest control device using the generated electricity. As a result, it is possible to efficiently cultivate the crops while effectively taking advantage of the small water flow during cultivation of the crops such as rice and wasabi and taking measures against the harmful animals at the same time. In addition, for example, a plurality of water tanks (ginger) for culturing seafood and the like are not limited to terraced rice fields, and the small-scale power generation device 10 may be installed at a water flow step portion of each water tank. In addition, it can be applied to places such as rivers, small-scale dams, ponds, water treatment plants, sewage treatment plants, factory water intake or factory wastewater.

  The small-scale power generation apparatus of the present invention described above is not limited to the configuration of the above-described embodiment alone, and can be arbitrarily modified without departing from the essence of the present invention described in the claims. Also good.

  The small-scale power generation apparatus of the present invention can generate power by being installed in a water source place having various small differences in elevation, such as rivers, agricultural waterways, aquaculture facilities, and the like.

DESCRIPTION OF SYMBOLS 10 Small-scale power generation device 12 Vertical pipe body 14 Water wheel 16 Generator 18 Water conveyance part position adjustment mechanism 20 Flow path 24 Bending pipe part 26 Water conveyance part 28 Drain part 30 Water conveyance case 31 Introduction opening 32 Side wall 33 Bottom wall 36 Garbage collection apparatus 38 Dust trapping net 40 Horizontal hole 42 Rotating shaft 44 Box-shaped blade 50 Opening 56 Box-shaped recessed space 58 Discharge opening 60 Restriction part

Claims (7)

It is a small-scale power generator that generates electricity using the flow of water at a small level difference in elevation,
A vertical pipe body in which a flow path in which water flows down in the vertical vertical direction is formed, a water guide portion is provided at the upper end, and an outflow portion is provided at the lower end,
A water wheel that is provided on the lower side of the flow path inside the vertical tube, and the rotary shaft is arranged vertically along the vertical axis direction of the vertical tube, receives the water that flows down vertically, and rotates horizontally around the rotary shaft;
A generator connected to the rotating shaft of the turbine and generating electricity in conjunction with the rotation of the turbine,
A water guide position adjustment mechanism that expands and contracts the vertical pipe body so as to change the height position of the water guide section relative to the water turbine, and adjusts the height position of the water guide section corresponding to the difference in level of the step. A small-scale power generation device.   The small-scale power generator according to claim 1, wherein the water guide position adjusting mechanism has a vertical pipe structure having a multiple pipe structure. The outflow part includes a bent pipe part in which the flow path is bent so that the water flowing down from the water wheel flows sideways,
The generator is installed on the outside of the vertical tube, close to the lower side of the bent tube,
The small-scale power generator according to claim 1 or 2, wherein the rotating shaft of the water turbine is linearly extended downward, penetrates the bent pipe portion, and is connected to the generator. The water wheel has a plurality of blades fixed at predetermined intervals around the rotation axis,
The plurality of blades are composed of a plurality of box-shaped blades having a deformed rectangular parallelepiped shape arranged obliquely with respect to the direction of water flow so as to generate a rotational force around the rotation axis when receiving the flowing water.
2. Each box-shaped blade has an upper surface opened so as to receive water flowing down from above into the box-shaped recess, and an inclined lower side opened so that the water received in the box-shaped recess flows out. The small-scale power generation device according to any one of 3 to 3.   The small-scale power generator according to claim 4, wherein a tapered throttle portion is provided above the box-shaped blades to guide water flowing down the flow path of the vertical tube body to the upper surface opening of the box-shaped blades.   The small-scale power generation device according to any one of claims 1 to 5, wherein the water guide portion is provided with a dust collection device that removes dust from water introduced into the vertical pipe body. The dust collecting device is formed in a size that is larger than the cross-sectional area of the vertical pipe body and the internal communication with the vertical pipe body, surrounds the periphery with a side wall, and has a water introduction case in which an opening for introducing water is formed,
A garbage trapping net installed in the water guiding case and inclined with respect to the direction in which the water flows down;
A horizontal hole penetrating laterally on the downward sloping end side of the dust trapping net on the side wall of the water guiding case, and allowing the dust trapped in the dust trapping net together with overflow water to flow out when water of a predetermined level or more accumulates in the water guiding case; The small-scale power generation device of Claim 6 containing this.

Images