JP5705105B2 - Hydroelectric generator - Google Patents

Hydroelectric generator Download PDF

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JP5705105B2
JP5705105B2 JP2011287455A JP2011287455A JP5705105B2 JP 5705105 B2 JP5705105 B2 JP 5705105B2 JP 2011287455 A JP2011287455 A JP 2011287455A JP 2011287455 A JP2011287455 A JP 2011287455A JP 5705105 B2 JP5705105 B2 JP 5705105B2
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water
fixed
main body
intake
power generation
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JP2013053615A (en
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貞夫 谷口
貞夫 谷口
弘雄 南
弘雄 南
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HOKURIKU SEIKI CO., LTD.
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

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Description

この発明は、農業用又は工業用水路等の比較的流量や落差の小さい水路や河川に設置される小形の水力発電装置に関する。   The present invention relates to a small hydroelectric power generation apparatus installed in a waterway or a river having a relatively small flow rate or drop such as an agricultural or industrial waterway.

従来、農業用又は工業用水路等の用水路に設置される小形の水力発電装置があった。例えば、特許文献１に開示されている水力発電装置は、農業用水路等の落差工の下流側水路底面に枠体を設置し、その枠体に対して水車や水力発電機等の発電装置を上方から着脱自在に設けたものである。この水力発電装置は、反動型水車ランナーベーンに立軸構造の回転軸が取り付けられ、回転軸に伝達機構を介して発電機が接続されている。その他、特許文献２に開示されているように、水路の落差工の下流側底面に矩形の貯水槽を設置し、貯水槽の下方に固定羽根を設け、その上方に発電ユニットを設置した水力発電装置の構成も提案されている。   Conventionally, there has been a small hydroelectric power generation device installed in an irrigation channel such as an agricultural or industrial channel. For example, the hydroelectric generator disclosed in Patent Document 1 has a frame installed on the bottom surface of a downstream waterway of a drop work such as an agricultural waterway, and the power generator such as a water turbine or a hydroelectric generator is located above the frame. It is provided so as to be detachable from. In this hydroelectric power generation device, a rotating shaft having a vertical shaft structure is attached to a reaction-type water turbine runner vane, and a generator is connected to the rotating shaft via a transmission mechanism. In addition, as disclosed in Patent Document 2, a hydroelectric power generation system in which a rectangular water storage tank is installed on the bottom surface of the downstream side of the head of the water channel, a fixed blade is provided below the water tank, and a power generation unit is installed thereabove. A device configuration has also been proposed.

特開２００５−３２０８８３号公報JP-A-2005-320883 特開２００４−１２４８２９号公報JP 2004-124829 A

上記背景技術の場合、用水路の落差工の底面に水力発電装置とその固定構造物を施工する構造であり、施工工事が面倒であり工数の掛かるものであった。しかも、用水路の落差工は、その地形の勾配により千差万別であり、水力発電に利用可能な用水の落差を一定に設定することが出来ないものであることから、設置する構造物の大きさを設置場所に合わせて設計し、施工しなければならず設計や施工に工数が掛かるものであった。さらに、用水路に流れる水の流量も一定にならず、流量変化に対して柔軟に対応できないものであり、増水時の大流量により導水管等の損傷が生じ易いものであった。その他、発電装置本体の設置に際して、設置箇所により、完成品の発電装置本体を搬入できない場合もあった。   In the case of the above-mentioned background art, the hydroelectric generator and its fixed structure are constructed on the bottom surface of the head of the irrigation canal, which is troublesome and requires a lot of man-hours. In addition, the head of the irrigation canal varies greatly depending on the slope of the topography, and the head of water that can be used for hydropower generation cannot be set to a constant value. The design must be designed and constructed according to the installation location, and man-hours are required for the design and construction. Furthermore, the flow rate of the water flowing through the irrigation channel is not constant, so that it cannot flexibly respond to the change in the flow rate, and damage to the water conduit and the like is likely to occur due to the large flow rate at the time of water increase. In addition, when installing the power generation device main body, it may be impossible to carry in the completed power generation device main body depending on the installation location.

この発明は、上記背景技術の問題点に鑑みてなされたものであり、簡単な構成で、設置する落差工の形状や落差にかかわらず設置が容易であり、設置環境の変化にも柔軟に対応することが出来る水力発電装置を提供することを目的とする。 The present invention has been made in view of the above-mentioned problems of the background art, and is easy to install regardless of the shape of the drop head to be installed or a drop with a simple configuration, and can flexibly respond to changes in the installation environment. An object of the present invention is to provide a hydroelectric power generation device that can be used.

この発明は、中心軸が垂直に設けられ内側を水が上方から下方に向かって通過する取水胴と、前記取水胴の下方に同軸に設けられた水絞り部と、前記水絞り部の下方に設けられた回転スクリュウと、前記回転スクリュウに固定されたシャフトに連結された発電機とが設けられた発電装置本体を有し、前記発電装置本体を保持した枠体と、前記枠体が固定された梁部材とを備え、前記発電装置本体が固定された前記枠体を前記梁部材に固定した状態で、前記発電装置本体が、前記梁部材により水路の落差工に吊り下げられて固定される水力発電装置である。   The present invention includes a water intake barrel in which a central axis is provided vertically and water passes from the upper side to the lower side, a water throttle portion provided coaxially below the water intake barrel, and a lower portion of the water throttle portion. A power generator main body provided with a rotary screw provided and a generator coupled to a shaft fixed to the rotary screw; a frame holding the power generator main body; and the frame fixed The power generation device main body is suspended and fixed to the headway of the water channel by the beam member in a state where the frame body to which the power generation device main body is fixed is fixed to the beam member. It is a hydroelectric generator.

前記枠体は、矩形に形成され前記発電装置本体を収容して一対の前記梁部材に前記枠体の上端部が固定され、前記一対の梁部材は、前記水路の両岸に設置された台座に固定されるものである。   The frame is formed in a rectangular shape, accommodates the power generation device main body, the upper ends of the frame are fixed to a pair of beam members, and the pair of beam members are pedestals installed on both sides of the water channel It is fixed to.

前記回転スクリュウの下流側には、前記回転スクリュウを通過した水を流す導水菅を備え、前記導水菅は前記回転スクリュウと同軸且つ伸縮自在に設けられ、前記導水菅の下端部側にはフロートが固定され、前記フロートにより前記導水菅の下端部側が前記水路の水量により上下動可能に設けられたものである。前記導水菅は、複数の直径の異なる筒体が同心状に摺動自在に嵌合したものである。または、前記導水菅は、蛇腹状の伸縮自在な筒体でも良い。   On the downstream side of the rotary screw, there is a water conduit that allows the water that has passed through the rotary screw to flow, the water conduit is provided coaxially and telescopically with the rotary screw, and a float is provided on the lower end side of the water conduit. The lower end side of the water conduit is fixed by the float so as to be movable up and down by the amount of water in the water channel. The water conduit is formed by fitting a plurality of cylindrical bodies having different diameters so as to be slidable concentrically. Alternatively, the water conduit may be a bellows-like stretchable cylinder.

また、前記取水胴には取水口が設けられ、前記取水口の開口部が前記落差工の上流側の水路に向かって開口し、前記取水口には水流を前記取水胴の外へ逃がすバイパス口が形成されているものである。前記バイパス口には蓋部材が設けられ、前記蓋部材は水位計により作動するモータにより開閉自在に設けられているものでも良い。   Further, the intake cylinder is provided with an intake opening, the opening of the intake opening opens toward a water channel on the upstream side of the drop work, and the bypass opening through which the water flow is released to the outside of the intake cylinder Is formed. The bypass port may be provided with a lid member, and the lid member may be provided to be opened and closed by a motor operated by a water level gauge.

この発明の水力発電装置によれば、発電装置本体が梁部材に吊り下げられて水路に設置されるので、施工に際して落差工の底面等に構造物を設置することなく水力発電装置の設置が可能であり、極めて施工性が良い。しかも、落差工の大きさにかかわらず施工することが出来、設置場所を選ばないものである。 According to the hydraulic power unit of the present invention, since the power generation device main body is installed in the waterway hung on the beam member, can be installed hydraulic power unit without installing a structure to the bottom surface or the like of the drop Engineering during construction It is extremely easy to install. Moreover, it can be constructed regardless of the size of the drop head, and the installation location is not limited.

さらに、導水菅が伸縮することにより、落差工の下流側の水面に確実に導水菅を位置させることが出来る。また、水位の上下にも導水菅が追従し、設置環境の変化にも柔軟に対応することが出来、水量が増加した際には導水菅が短くなって、水流により導水菅にかかる横方向の力の増加を抑え、発電装置本体の損傷を防ぐことが出来る。   Further, the expansion / contraction of the water conduit can ensure that the water conduit is positioned on the water surface downstream of the drop head. In addition, water guides follow the water level above and below, and can flexibly respond to changes in the installation environment. When the amount of water increases, the water guides become shorter, and the lateral flow applied to the water guides by the water flow is reduced. The increase in power can be suppressed and damage to the power generator body can be prevented.

また、取水口にはバイパス口が設けられ、流量が多い場合や発電装置本体の点検時等には、水流が取水胴内に入り込むのを抑えることが出来、安全性やメンテナンス性が良い。   In addition, the intake port is provided with a bypass port, so that when the flow rate is large or the power generator main body is inspected, the water flow can be prevented from entering the intake cylinder, and safety and maintainability are good.

この発明の第一実施形態の水力発電装置の縦断面図である。It is a longitudinal cross-sectional view of the hydraulic power unit of 1st embodiment of this invention. この実施形態の水力発電装置の平面図である。It is a top view of the hydroelectric generator of this embodiment. この実施形態の水力発電装置の水絞り部から回転スクリュウ部を示す部分拡大縦断面図である。It is a partial expanded longitudinal cross-sectional view which shows a rotary screw part from the water throttle part of the hydroelectric generator of this embodiment. この実施形態のフロート部分を除いた水力発電装置の部分破断斜視図である。It is a partial fracture perspective view of a hydroelectric generator except a float part of this embodiment. この実施形態の水力発電装置の斜視図である。It is a perspective view of the hydroelectric generator of this embodiment. この発明の第二実施形態の水力発電装置の一部分解斜視図である。It is a partial exploded perspective view of the hydroelectric generator of a second embodiment of this invention. 第二実施形態の水力発電装置の構成を示す分解斜視図である。It is a disassembled perspective view which shows the structure of the hydraulic power unit of 2nd embodiment.

以下、この発明の実施形態について図面に基づいて説明する。図１〜図５はこの発明の第一実施形態を示すもので、この実施形態の水力発電装置１０は、水路１２の落差工１４が形成された箇所のコンクリート製の両岸１２ａに、台座１３を介して掛け渡された一対の梁部材１６に吊り下げられるようにして設置される。台座１３の形状は、両岸１２ａの傾斜や高さを調整するために、両岸１２ａの形状に合わせて、適宜矩形や三角形等に設計され、設置される。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 5 show a first embodiment of the present invention. A hydroelectric generator 10 according to this embodiment includes a pedestal 13 on a concrete shore 12a where a drop work 14 of a water channel 12 is formed. It is installed so that it may be suspended by a pair of beam member 16 spanned through. The shape of the pedestal 13 is appropriately designed and installed in a rectangular or triangular shape according to the shape of the both banks 12a in order to adjust the inclination and height of the both banks 12a.

鋼材製の梁部材１６には、矩形に組み立てられた金属製の枠体２０の上端部２０ａがボルト１７で固定され、枠体２０内には、円筒状の発電装置本体１１が、ボルト等で一体に固定されている。発電装置本体１１は、後述する取水胴２２の上端が枠体２の上端部２０ａに固定され、取水胴２２の下端が枠体１６の下端部２０ｂに固定されている。   An upper end 20a of a metal frame 20 assembled in a rectangular shape is fixed to the steel beam member 16 with a bolt 17, and in the frame 20, a cylindrical power generator main body 11 is fixed with a bolt or the like. It is fixed integrally. In the power generation apparatus main body 11, the upper end of a water intake drum 22 described later is fixed to the upper end portion 20 a of the frame body 2, and the lower end of the water intake drum 22 is fixed to the lower end portion 20 b of the frame body 16.

発電装置本体１１は円筒状の取水胴２２を有し、取水胴２２の上方よりやや中間部寄りの位置には、落差工１４の上流側底面１４ａに端部が載置され、上流側に向かって水平方向に開口部が開口した取水口２６が接続されている。取水口２６の開口部は四角形に形成され、取水口２６の一側面部には、水路１２の水位を検知する水位計２７が設けられている。   The power generation device main body 11 has a cylindrical intake drum 22, and an end portion is placed on the upstream bottom surface 14 a of the drop work 14 at a position slightly closer to the middle than above the intake drum 22, and toward the upstream side. A water intake 26 having an opening in the horizontal direction is connected. The opening of the water intake 26 is formed in a quadrangular shape, and a water level gauge 27 that detects the water level of the water channel 12 is provided on one side surface of the water intake 26.

取水口２６の下面には、落差工１４の下流側底面１４ｂに向かって開口可能なオーバーフロー用のバイパス口２８が開閉自在に設けられている。バイパス口２８には、蓋部材２８ａが設けられ、蓋部材２８ａは、開閉用連結部材３１を介してモータ３０に連結され、バイパス口２８がモータ３０により開閉自在に設けられている。モータ３０は、両岸１２ａ間に架け渡された載置部材２９上に固定され、水位計２７が図示しない制御部に接続され、水路１２の水位を水位計２７により検知し、一定以上の水深になったところで、制御部がモータ３０を作動させて、バイパス口２８を開放するように設けられている。   On the lower surface of the water intake 26, an overflow bypass port 28 that can be opened toward the downstream bottom surface 14b of the drop head 14 is provided so as to be freely opened and closed. The bypass port 28 is provided with a lid member 28 a, the lid member 28 a is connected to a motor 30 via an opening / closing connecting member 31, and the bypass port 28 is provided so as to be freely opened and closed by the motor 30. The motor 30 is fixed on a mounting member 29 spanned between both banks 12a, and a water level gauge 27 is connected to a control unit (not shown). The water level of the water channel 12 is detected by the water level gauge 27, and a water depth above a certain level. Then, the control unit is provided to operate the motor 30 to open the bypass port 28.

取水胴２２の下端開口部には、水絞り部３２が同軸に固定されている。水絞り部３２は、取水胴２２の下端部に大径部が固定された円筒円錐台状の水絞り外筒３４を備えている。水絞り外筒３４の下端である小径部には、後述するスクリュウ管３６が取り付けられている。水絞り部３２の水絞り外筒３４の内側には、中心軸上に流路断面積を狭めるための水絞りドラム３３が設けられている。水絞りドラム３３は、取水胴２２に対して同軸の中心軸を有し、下方に向かって直径が大きくなる円錐台状部分とその大径部に連続した筒状部とで形成されている。   A water throttle portion 32 is coaxially fixed to the lower end opening of the intake drum 22. The water squeezing part 32 is provided with a cylindrical circular truncated conical water squeezing outer cylinder 34 whose large diameter part is fixed to the lower end part of the intake cylinder 22. A screw pipe 36, which will be described later, is attached to a small diameter portion which is the lower end of the water throttle outer cylinder 34. A water squeezing drum 33 for narrowing the cross-sectional area of the flow path is provided on the central axis inside the water squeezing outer cylinder 34 of the water squeezing part 32. The water squeezing drum 33 has a central axis that is coaxial with the intake cylinder 22 and is formed of a truncated cone portion having a diameter that increases downward and a cylindrical portion that continues to the large diameter portion.

水絞り部３２の水絞り外筒３４と水絞りドラム３３との間には、複数枚の固定ガイドベーン４０が設けられている。固定ガイドベーン４０は、水絞り部３２内で、水絞り外筒３４内の空間を、略放射方向に等間隔に区切っている。各固定ガイドベーン４０の内側の側縁部は、水絞りドラム３３の筒状部の側面に固定され、この固定ガイドベーン４０の反対側の側縁部は、水絞り外筒３４の内周面に固定されている。そして、各固定ガイドベーン４０のその他の一対の側縁部は流路方向上下に位置して、水絞り部３２の上下両側の空間に露出している。   A plurality of fixed guide vanes 40 are provided between the water throttle outer cylinder 34 of the water throttle unit 32 and the water throttle drum 33. The fixed guide vane 40 divides the space in the water throttle outer cylinder 34 in the water throttle part 32 at substantially equal intervals in the radial direction. The inner side edge portion of each fixed guide vane 40 is fixed to the side surface of the cylindrical portion of the water squeezing drum 33, and the opposite side edge portion of the fixed guide vane 40 is the inner peripheral surface of the water squeezing outer tube 34. It is fixed to. The other pair of side edge portions of each fixed guide vane 40 is positioned above and below in the flow path direction and exposed in the space on both the upper and lower sides of the water throttle portion 32.

各固定ガイドベーン４０の取付角度は、水絞り部３２の中心軸方向に対して２０度〜３５度程度の範囲で傾斜している。好ましくは２５度〜３０度程度の範囲内で取り付ける。この傾斜方向は、下方へ向かって時計周りに進むように傾斜している。さらに、傾斜角度は、後述する回転スクリュウ３８の上面に対して、ほぼ直角に交差するように設けられている。なお、ここで直角とは、９０度前後の角度を含むものであり、９０度よりやや大きな角度が好ましい。   The mounting angle of each fixed guide vane 40 is inclined in the range of about 20 degrees to 35 degrees with respect to the central axis direction of the water throttle portion 32. Preferably, it is attached within a range of about 25 degrees to 30 degrees. This inclination direction is inclined so as to proceed clockwise in the downward direction. Further, the inclination angle is provided so as to intersect at a substantially right angle with respect to the upper surface of a rotary screw 38 to be described later. Here, the right angle includes an angle of around 90 degrees, and an angle slightly larger than 90 degrees is preferable.

水絞り部３２の下方の小径部には、同軸にスクリュウ管３６が固定され、スクリュウ管３６内に、回転筒３９に固定された例えば４枚の回転ブレードから成る回転スクリュウ３８が回転自在に設けられている。   A screw pipe 36 is coaxially fixed to the small diameter part below the water throttle part 32, and a rotary screw 38 composed of, for example, four rotary blades fixed to a rotary cylinder 39 is rotatably provided in the screw pipe 36. It has been.

回転スクリュウ３８が取り付けられたスクリュウ管３６の下側には、筒状の導水菅４２が設けられている。導水菅４２は、複数の直径の異なる筒体が同心状に摺動自在に嵌合したもので、スクリュウ管３６の下端縁に上段筒４２ａの上端縁が固定されている。導水菅４２の分割数は、例えば上段筒４２ａ、中段筒４２ｂ、下段筒４２ｃの３段に分割されて形成され、中段筒４２ｂの内径は、上段筒４２ａの外径とほぼ等しく、中段筒４２ｂの外径が、下段筒４２ｃの内径とほぼ等しい。これにより、上段筒４２ａの下部、及び中段筒４２ｂが下段筒４２ｃ内に収容され、収縮可能に形成されている。なお、上段筒４２ａ、中段筒４２ｂ、下段筒４２ｃは、各々端部にストッパ４３が設けられ、伸張時にも互いに離れないように形成され、且つほぼ水密状態で伸縮可能に形成されている。   A cylindrical water conduit 42 is provided below the screw pipe 36 to which the rotary screw 38 is attached. The water conduit 42 is formed by fitting a plurality of cylindrical bodies having different diameters so as to be slidable concentrically, and the upper end edge of the upper cylinder 42 a is fixed to the lower end edge of the screw pipe 36. The number of divisions of the water conduit 42 is, for example, divided into three stages of an upper cylinder 42a, a middle cylinder 42b, and a lower cylinder 42c. The inner diameter of the middle cylinder 42b is substantially equal to the outer diameter of the upper cylinder 42a, and the middle cylinder 42b. Is substantially equal to the inner diameter of the lower cylinder 42c. Thereby, the lower part of the upper stage cylinder 42a and the middle stage cylinder 42b are accommodated in the lower stage cylinder 42c, and are formed to be contractible. The upper cylinder 42a, the middle cylinder 42b, and the lower cylinder 42c are each provided with a stopper 43 at the end thereof, formed so as not to be separated from each other even when extended, and formed to be extendable and contractable in a substantially watertight state.

下段筒４２ｃの外側には、環状のフロート４４が固定されている。フロート４４は、発泡樹脂等により形成され、垂直方向に設けられた一対のガイドバー４６が保持部材４５を介して垂直方向に突出している。ガイドバー４６は、枠体２０の下端部２０ｂに取り付けられた固定ガイド４８に挿通され、上下方向に摺動自在に設けられている。フロート４４の浮力は、中段筒４２ｂ及び下段筒４２ｃを浮かせるのに十分な浮力を有するもので、水路１２の水面に常時浮揚可能に設けられている。   An annular float 44 is fixed to the outside of the lower cylinder 42c. The float 44 is formed of foamed resin or the like, and a pair of guide bars 46 provided in the vertical direction protrude through the holding member 45 in the vertical direction. The guide bar 46 is inserted through a fixed guide 48 attached to the lower end 20b of the frame body 20, and is provided to be slidable in the vertical direction. The buoyancy of the float 44 has sufficient buoyancy to float the middle tube 42b and the lower tube 42c, and is provided so as to be able to float on the water surface of the water channel 12 at all times.

回転スクリュウ３８の中心部には、軸受け部３７が設けられ、回転スクリュウ３８の中心側の回転筒部３９には、シャフト５０が回転スクリュウ３８及び回転筒部３９と一体に固定されている。シャフト５０は、回転スクリュウ３８の回転筒部３９を貫通して固定され、回転筒部３９の上方に垂直に延出し、水絞り部３２の水絞りドラム３３に同軸に形成された貫通孔に回転可能に挿通され、さらに上方に延出して枠体２０の上端部２０ａに達している。   A bearing portion 37 is provided at the center of the rotating screw 38, and a shaft 50 is fixed to the rotating cylinder 38 on the center side of the rotating screw 38 integrally with the rotating screw 38 and the rotating cylinder 39. The shaft 50 is fixed through the rotary cylinder portion 39 of the rotary screw 38, extends vertically above the rotary cylinder portion 39, and rotates in a through hole formed coaxially with the water throttle drum 33 of the water throttle portion 32. It is inserted so as to be able to extend further upward and reaches the upper end 20 a of the frame 20.

シャフト５０の上端部は、枠体２０の上端部２０ａに固定された軸受５１を貫通して、継ぎ手部材５４に連結されている。継ぎ手部材５４は、増速機５６の回転軸に連結され、増速機５６の回転軸が、継ぎ手部材５８を介して発電機６０の回転軸に連結されている。増速機５８は、枠体２０の上端部２０ａに設置されたハウジング６２上に固定され、ハウジング６２上に発電機６０が設置されている。シャフト５０の中間部は、取水胴２２内で水絞りドラム３３に固定された筒体６４内に回転自在に収納されている。シャフト５０を収納した筒体６４の上端部は、ハウジング６２が固定された取付板６３の底面に接続され、筒体６４の下端部は、水絞りドラム３３の上端部に水密に連結されている。そして、シャフト５０の下端部は、スラスト軸受５３に軸支されている。   The upper end portion of the shaft 50 passes through a bearing 51 fixed to the upper end portion 20 a of the frame body 20 and is connected to the joint member 54. The joint member 54 is connected to the rotation shaft of the speed increaser 56, and the rotation shaft of the speed increaser 56 is connected to the rotation shaft of the generator 60 via the joint member 58. The step-up gear 58 is fixed on a housing 62 installed on the upper end 20 a of the frame body 20, and the generator 60 is installed on the housing 62. An intermediate portion of the shaft 50 is rotatably accommodated in a cylindrical body 64 fixed to the water squeezing drum 33 in the intake drum 22. The upper end portion of the cylindrical body 64 that houses the shaft 50 is connected to the bottom surface of the mounting plate 63 to which the housing 62 is fixed, and the lower end portion of the cylindrical body 64 is connected to the upper end portion of the water squeezing drum 33 in a watertight manner. . The lower end portion of the shaft 50 is pivotally supported by the thrust bearing 53.

次に、この実施形態の水力発電装置１０の設置方法について説明する。水力発電装置１０を取り付ける用水路は、水路１２がコンクリートで形成され、一対の側壁部の両岸１２ａもコンクリートで形成されている。先ず、この水路１２の落差工１４が形成された位置の両岸１２ａに、台座１３を設置する。一方、発電装置本体１１は、枠体２０に固定し、枠体２０の互いに対向する一対の側面に、梁部材１６を固定する。梁部材１６は、水路１２の幅よりも長く、台座１３に固定可能な長さを有している。梁部材１６を固定する側面は、枠体２０から取水口２６が突出した側面とその反対側の両側面である。設置に際しては、枠体２０に固定された発電装置本体１１を、落差工１４のある水路１２の側方で図示しないクレーンにより吊り下げて、台座１３の上面に梁部材１６の両端部を載せるようにして設置し、位置合わせをして、梁部材１６の両端部を台座１３に固定する。以上により、水力発電装置１０の水路１２への設置が完了する。   Next, the installation method of the hydroelectric generator 10 of this embodiment is demonstrated. In the water channel to which the hydroelectric generator 10 is attached, the water channel 12 is made of concrete, and both banks 12a of the pair of side walls are also made of concrete. First, pedestals 13 are installed on both banks 12a of the water channel 12 where the drop work 14 is formed. On the other hand, the power generation device main body 11 is fixed to the frame body 20, and the beam member 16 is fixed to a pair of side surfaces of the frame body 20 that face each other. The beam member 16 is longer than the width of the water channel 12 and has a length that can be fixed to the base 13. The side surfaces to which the beam member 16 is fixed are the side surface from which the water intake 26 protrudes from the frame body 20 and the opposite side surfaces. When installing, the power generator main body 11 fixed to the frame body 20 is suspended by a crane (not shown) on the side of the water channel 12 where the drop work 14 is located, and both ends of the beam member 16 are placed on the upper surface of the base 13. Then, the both ends of the beam member 16 are fixed to the base 13. Thus, the installation of the hydroelectric generator 10 in the water channel 12 is completed.

なお、水路１２の落差工１４の箇所にクレーンを持って行けない場合は、発電装置本体１１を分解して、現場に搬入し、現場で枠体１２を組み立てて台座１３間に梁部材１６を設置し、枠体２０を梁部材１６に組み付けて吊り下げ状態とし、この後、発電装置本体１１の各部品を順次枠体２０内に組み付けて施工するものでも良い。   In addition, when a crane cannot be carried to the location of the head work 14 of the water channel 12, the power generator main body 11 is disassembled and carried into the site, the frame body 12 is assembled at the site, and the beam member 16 is placed between the bases 13. The frame body 20 may be installed in a suspended state by assembling the frame body 16 on the beam member 16, and thereafter, the components of the power generation apparatus main body 11 may be assembled in the frame body 20 in order.

次に、水力発電装置１０の動作について説明する。水路１２を流れてきた水は、取水口２６から取水胴２２に流入し、水絞り部３２により流路が絞られ、流速が増す。流速が速くなった水流は、固定ガイドベーン４０により、流れの方向が規制され、固定ガイドベーン４０の延長線上に向かって流れ落ちる。流れ落ちる位置は、回転スクリュウ３８のブレード面にほぼ垂直に当たる位置である。   Next, the operation of the hydroelectric generator 10 will be described. The water flowing through the water channel 12 flows into the water intake drum 22 from the water intake 26, the flow path is throttled by the water throttle 32, and the flow velocity increases. The direction of the flow of the water flow with the increased flow velocity is regulated by the fixed guide vane 40 and flows down toward the extension line of the fixed guide vane 40. The position where it flows down is a position where it hits the blade surface of the rotary screw 38 substantially perpendicularly.

取水胴２２から水絞り部３２により流速が高められた水は、回転スクリュウ３８のブレードに衝突し、ブレードが押されて回転スクリュウ３８が回転筒部３９を中心に回転する。このとき、水絞り部３２の固定ガイドベーン４０により水流が各々に分かれた流路を形成し、下方に位置する回転スクリュウ３８のブレードに当たる。回転スクリュウ３８の各ブレードは、表面で水絞り部３２からの水流を直角方向よりやや大きな角度で受けて、効果的に回転エネルギーに変換さする。   The water whose flow velocity is increased by the water throttling portion 32 from the water intake barrel 22 collides with the blade of the rotary screw 38, and the blade is pushed, and the rotary screw 38 rotates around the rotary cylinder portion 39. At this time, the fixed guide vanes 40 of the water throttling part 32 form flow paths in which the water flow is divided, and hit the blades of the rotary screw 38 positioned below. Each blade of the rotary screw 38 receives the water flow from the water constricting part 32 at a surface at a slightly larger angle than the perpendicular direction, and effectively converts it into rotational energy.

回転スクリュウ３８を通過した水流は、導水菅４２を経て、落差工１４の下流側の水路１２に合流する。このときの落差は、落差工１４の上流側の水路１２の水面から落差工１４の下流側の水面までの高さの差である。また、水路１２の水量が増加すると、導水菅４２のフロート４４が水面に浮かんでいるので、落差工１４の下流側の水面の位置は常時変化し、この水力発電装置１０が利用することができる水流の位置エネルギーの量は、フロート４４が浮かぶ水面の位置と上流側の水面又は取水口２６の上面の位置との差による位置エネルギーである。さらに、水路１２の水の流速による速度エネルギーも利用することが可能である。   The water flow that has passed through the rotary screw 38 passes through the water conduit 42 and joins the water channel 12 on the downstream side of the drop head 14. The drop at this time is a difference in height from the water surface of the water channel 12 upstream of the drop work 14 to the water surface downstream of the drop work 14. Further, when the amount of water in the water channel 12 increases, the float 44 of the water conduit 42 floats on the water surface, so the position of the water surface on the downstream side of the drop work 14 always changes, and this hydroelectric generator 10 can be used. The amount of potential energy of the water flow is potential energy due to the difference between the position of the water surface where the float 44 floats and the position of the upstream water surface or the upper surface of the water intake 26. Furthermore, the velocity energy due to the water flow rate in the water channel 12 can also be used.

この実施形態の水力発電装置１０によれば、発電装置本体１１が枠体２０に固定されて梁部材１６に吊り下げられて水路１２に設置されるので、落差工１４の下流側底面１４ｂ等に構造物を設置する必要がなく、作業員が水路内に入ることなく水力発電装置１０の設置が可能であり、極めて施工性が良い。しかも、設置は、発電装置本体１１と枠体２０及び梁部材１６を予め組み立てておけば、クレーンにより吊り下げて所定の水路１２の落差工１４部分に設置することができ、この点でも極めて施工性がよい。さらに、クレーン車が進入できないような水路の場合、現地で発電装置本体１１と枠体２０及び梁部材１６を組み立照子とも容易であり、水路に梁部材１６から順に組み付けていくことも可能である。従って、落差工１４の大きさにかかわらず発電装置本体１１の設置をすることが出来る。   According to the hydraulic power generation apparatus 10 of this embodiment, the power generation apparatus main body 11 is fixed to the frame body 20 and is suspended from the beam member 16 and installed in the water channel 12. There is no need to install a structure, and it is possible to install the hydroelectric power generator 10 without an operator entering the water channel. In addition, if the power generator main body 11, the frame body 20 and the beam member 16 are assembled in advance, they can be suspended by a crane and installed on the head 14 of the predetermined water channel 12. Good sex. Furthermore, in the case of a waterway where a crane vehicle cannot enter, it is easy to assemble the power generator main body 11, the frame body 20 and the beam member 16 at the site, and it is also possible to assemble the waterway sequentially from the beam member 16. . Therefore, the power generator main body 11 can be installed regardless of the size of the head work 14.

さらに、この発明の発電装置本体１１は、導水菅４２が伸縮することにより、落差工１４の下流側の水面内に確実に導水菅４２の下端を位置させることが出来、導水菅４２の下端が水面から離れず、圧力水頭の損失がない。しかも、水位の上下にも導水菅４２が追従し、水流が増加した際には導水菅４２が短くなって、水流により導水菅４２にかかる横方向の力を抑え、発電装置本体１１の損傷を防止し、水力発電装置１０の安全を確保することが出来る。   Furthermore, the power generator main body 11 of the present invention can reliably position the lower end of the water conduit 42 within the water surface on the downstream side of the drop head 14 by the expansion and contraction of the water conduit 42. There is no loss of pressure head without leaving the water surface. In addition, the water conduit 42 also follows the water level above and below, and when the water flow increases, the water conduit 42 is shortened, the lateral force applied to the water conduit 42 by the water flow is suppressed, and the power generator main body 11 is damaged. And the safety of the hydroelectric generator 10 can be ensured.

また、取水口２６にはバイパス口２８が設けられ、流量が多い場合や発電装置本体１１の点検時等には、水流が取水胴２２内に入り込むのを抑えることが出来、安全性やメンテナンス性が良い。   In addition, a bypass port 28 is provided in the water intake 26, so that the flow of water can be suppressed from entering the water intake drum 22 when the flow rate is large or when the power generator main body 11 is inspected. Is good.

次に、この発明の第二実施形態の水力発電装置７０について、図６、図７を基にして説明する。ここで、上記実施形態と同様の部材は、同一の符号を付して説明を省略する。水力発電装置７０は、上記実施形態と同様に鋼材製の梁部材１６と、矩形に組み立てられた金属製の枠体２０により、水路のコンクリート製の両岸に架け渡されて設置される。枠体２０内には、円筒状の発電装置本体１１が固定されている。   Next, a hydroelectric generator 70 according to a second embodiment of the present invention will be described with reference to FIGS. Here, the same members as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted. Similar to the above embodiment, the hydroelectric power generator 70 is installed across the concrete both banks of the waterway by the steel beam member 16 and the metal frame body 20 assembled in a rectangular shape. A cylindrical power generator main body 11 is fixed in the frame 20.

発電装置本体１１は円筒状の取水胴２２を有し、取水胴２２の上方側面の開口部に、取水口２６の下流側開口部が接続されている。取水口２６の開口部は四角形に形成され、取水口２６の下面には、落差工の下流側底面に向かって開口可能なオーバーフロー用のバイパス口２８が開閉自在に設けられている。バイパス口２８には、蓋部材２８ａが設けられ、蓋部材２８ａは、図示しない開閉用連結部材を介して下方に向けて開閉自在に設けられている。   The power generation device main body 11 has a cylindrical intake drum 22, and the downstream opening of the intake port 26 is connected to the opening on the upper side surface of the intake drum 22. The opening portion of the water intake port 26 is formed in a quadrangular shape, and an overflow bypass port 28 that can be opened toward the bottom surface on the downstream side of the drop work is provided on the lower surface of the water intake port 26 so as to be freely opened and closed. The bypass port 28 is provided with a lid member 28a, and the lid member 28a is provided so as to be openable and closable downward through an opening / closing connecting member (not shown).

取水胴２２の下端開口部には、水絞り部３２が同軸に固定されている。水絞り部３２は、取水胴２２の下端部に大径部が固定された円筒円錐台状の水絞り外筒３４を備えている。水絞り外筒３４の下端である小径部には、スクリュウ管３６が取り付けられ、スクリュウ管３６内に、回転スクリュウ３８が回転可能に同軸に設けられている。水絞り部３２の水絞り外筒３４の内側には、中心軸上に水絞りドラム３３が設けられている   A water throttle portion 32 is coaxially fixed to the lower end opening of the intake drum 22. The water squeezing part 32 is provided with a cylindrical circular truncated conical water squeezing outer cylinder 34 whose large diameter part is fixed to the lower end part of the intake cylinder 22. A screw pipe 36 is attached to a small diameter portion which is a lower end of the water throttle outer cylinder 34, and a rotary screw 38 is rotatably and coaxially provided in the screw pipe 36. A water squeezing drum 33 is provided on the central axis inside the water squeezing outer cylinder 34 of the water squeezing part 32.

水絞り部３２の水絞り外筒３４と水絞りドラム３３との間には、複数枚の固定ガイドベーン４０が設けられている。固定ガイドベーン４０は、水絞り部３２内で、水絞り外筒３４内の空間を、略放射方向に等間隔に区切っている。各固定ガイドベーン４０の内側の側縁部は、水絞りドラム３３の筒状部の側面に固定され、反対側の側縁部は、水絞り外筒３４の内周面に固定されている。   A plurality of fixed guide vanes 40 are provided between the water throttle outer cylinder 34 of the water throttle unit 32 and the water throttle drum 33. The fixed guide vane 40 divides the space in the water throttle outer cylinder 34 in the water throttle part 32 at substantially equal intervals in the radial direction. The inner side edge portion of each fixed guide vane 40 is fixed to the side surface of the tubular portion of the water squeezing drum 33, and the opposite side edge portion is fixed to the inner peripheral surface of the water squeezing outer tube 34.

各固定ガイドベーン４０の取付角度は、水絞り部３２の中心軸方向に対して２０度〜３５度程度の範囲で傾斜している。好ましくは２５度〜３０度程度の範囲内で取り付ける。この傾斜方向は、下方へ向かって時計周りに進むように傾斜している。さらに、傾斜角度は、後述する回転スクリュウ３８の上面に対して、ほぼ直角に交差するように設けられている。   The mounting angle of each fixed guide vane 40 is inclined in the range of about 20 degrees to 35 degrees with respect to the central axis direction of the water throttle portion 32. Preferably, it is attached within a range of about 25 degrees to 30 degrees. This inclination direction is inclined so as to proceed clockwise in the downward direction. Further, the inclination angle is provided so as to intersect at a substantially right angle with respect to the upper surface of a rotary screw 38 to be described later.

回転スクリュウ３８が取り付けられたスクリュウ管３６の下側には、筒状の導水菅４２が設けられている。導水菅７２は、伸縮自在な蛇腹状の筒として形成され、スクリュウ管３６の下端縁に上端縁７２ａが固定されている。導水菅７２の下端部７２ｂには、環状のフロート４４が固定されている。フロート４４は、発泡樹脂等により形成され、垂直方向に設けられた一対のガイドバー４６が保持部材４５を介して垂直方向に突出している。ガイドバー４６は、枠体２０の下端部２０ｂに取り付けられた固定ガイド４８に挿通され、上下方向に摺動自在に設けられている。フロート４４の浮力は、導水菅７２の下部を浮かせるのに十分な浮力を有するもので、水路の水面に常時浮揚可能に設けられている。   A cylindrical water conduit 42 is provided below the screw pipe 36 to which the rotary screw 38 is attached. The water conduit 72 is formed as a telescopic bellows-like tube, and an upper end edge 72 a is fixed to the lower end edge of the screw pipe 36. An annular float 44 is fixed to the lower end 72 b of the water conduit 72. The float 44 is formed of foamed resin or the like, and a pair of guide bars 46 provided in the vertical direction protrude through the holding member 45 in the vertical direction. The guide bar 46 is inserted through a fixed guide 48 attached to the lower end 20b of the frame body 20, and is provided to be slidable in the vertical direction. The buoyancy of the float 44 has sufficient buoyancy to float the lower part of the water conduit 72 and is provided so as to be able to float at all times on the water surface of the water channel.

回転スクリュウ３８の中心部には、軸受け部が設けられ、回転スクリュウ３８の中心側の回転筒部３９には、シャフト５０が回転スクリュウ３８及び回転筒部３９と一体に固定されている。シャフト５０は、回転スクリュウ３８の回転筒部３９を貫通して固定され、回転筒部３９の上方に垂直に延出し、水絞り部３２の水絞りドラム３３に同軸に形成された貫通孔に回転可能に挿通され、さらに上方に延出して枠体２０の上端部２０ａに達している。   A bearing portion is provided at the center of the rotary screw 38, and a shaft 50 is fixed to the rotary cylinder 38 on the center side of the rotary screw 38 integrally with the rotary screw 38 and the rotary cylinder 39. The shaft 50 is fixed through the rotary cylinder portion 39 of the rotary screw 38, extends vertically above the rotary cylinder portion 39, and rotates in a through hole formed coaxially with the water throttle drum 33 of the water throttle portion 32. It is inserted so as to be able to extend further upward and reaches the upper end 20 a of the frame 20.

シャフト５０の上端部は、枠体２０の上端部２０ａに固定された軸受５１を貫通して、継ぎ手部材５４に連結されている。継ぎ手部材５４は、増速機５６の回転軸に連結され、増速機５６の回転軸が、他の継ぎ手部材を介して発電機６０の回転軸に連結されている。増速機５８は、枠体２０の上端部２０ａに設置されたハウジング６２上に固定され、ハウジング６２上に発電機６０が設置されている。シャフト５０を収納した筒体６４の上端部は、ハウジング６２が固定された取付板６３の底面に接続され、筒体６４の下端部は、水絞りドラム３３の上端部に水密に連結されている。   The upper end portion of the shaft 50 passes through a bearing 51 fixed to the upper end portion 20 a of the frame body 20 and is connected to the joint member 54. The joint member 54 is connected to the rotation shaft of the speed increaser 56, and the rotation shaft of the speed increaser 56 is connected to the rotation shaft of the generator 60 through another joint member. The step-up gear 58 is fixed on a housing 62 installed on the upper end 20 a of the frame body 20, and the generator 60 is installed on the housing 62. The upper end portion of the cylindrical body 64 that houses the shaft 50 is connected to the bottom surface of the mounting plate 63 to which the housing 62 is fixed, and the lower end portion of the cylindrical body 64 is connected to the upper end portion of the water squeezing drum 33 in a watertight manner. .

この実施形態の水力発電装置７０の設置方法も上記実施形態と同様に、予め工場内等で水力発電装置７０を組み立てておいて、設置現場では、クレーン車等により、吊り下げて、水路の両岸間に設置する。また、各部材を個別に設置場所に運んで現地で組み立てても良い。   In the same way as in the above embodiment, the hydroelectric generator 70 of this embodiment is assembled in advance in a factory or the like, and is suspended by a crane truck or the like at the installation site to Install between banks. Further, each member may be individually carried to the installation place and assembled on site.

この実施形態の水力発電装置１０の動作も、上記第一実施形態と同様に、水路１２を流れてきた水は、取水口２６から取水胴２２に流入し、水絞り部３２により流路が絞られ、流速が増す。流速が速くなった水流は、固定ガイドベーン４０により、流れの方向が規制され、固定ガイドベーン４０の延長線上に向かって流れ落ちる。取水胴２２から水絞り部３２により流速が高められた水は、回転スクリュウ３８のブレードに衝突し、ブレードが押されて回転スクリュウ３８が回転筒部３９を中心に回転する。転スクリュウ３８の各ブレードは、表面で水絞り部３２からの水流を直角方向よりやや大きな角度で受けて、効果的に回転エネルギーに変換さする。   In the operation of the hydroelectric generator 10 of this embodiment, the water flowing through the water channel 12 flows into the water intake barrel 22 from the water intake 26 and the flow path is throttled by the water throttle portion 32, as in the first embodiment. Flow rate increases. The direction of the flow of the water flow with the increased flow velocity is regulated by the fixed guide vane 40 and flows down toward the extension line of the fixed guide vane 40. The water whose flow velocity is increased by the water throttling portion 32 from the water intake barrel 22 collides with the blade of the rotary screw 38, and the blade is pushed, and the rotary screw 38 rotates around the rotary cylinder portion 39. Each blade of the rolling screw 38 receives the water flow from the water constricting portion 32 at a slightly larger angle than the perpendicular direction on the surface, and effectively converts it into rotational energy.

回転スクリュウ３８を通過した水流は、導水菅４２を経て、落差工１４の下流側の水路１２に合流する。また、水路１２の水量が増加すると、導水菅４２のフロート４４が水面に浮かんでいるので、落差工１４の下流側の水面の位置は常時変化し、この水力発電装置１０が利用することができる水流の位置エネルギーの量は、フロート４４が浮かぶ水面の位置と上流側の水面又は取水口２６の上面の位置との差による位置エネルギーである。さらに、水路１２の水の流速による速度エネルギーも利用することが可能である。   The water flow that has passed through the rotary screw 38 passes through the water conduit 42 and joins the water channel 12 on the downstream side of the drop head 14. Further, when the amount of water in the water channel 12 increases, the float 44 of the water conduit 42 floats on the water surface, so the position of the water surface on the downstream side of the drop work 14 always changes, and this hydroelectric generator 10 can be used. The amount of potential energy of the water flow is potential energy due to the difference between the position of the water surface where the float 44 floats and the position of the upstream water surface or the upper surface of the water intake 26. Furthermore, the velocity energy due to the water flow rate in the water channel 12 can also be used.

また、水路１２の水量が増加すると、蛇腹状の導水菅７２が、必要な長さに常時変化する。この場合も、フロート４４が水面に浮かんでいるので、落差工１４の下流側の水面の位置は常時変化し、この水力発電装置１０が利用することができる水流の位置エネルギーの量は、フロート４４が浮かぶ水面の位置と上流側の水面又は取水口２６の上面の位置との差による位置エネルギーである。   Further, when the amount of water in the water channel 12 increases, the bellows-shaped water conduit 72 always changes to a required length. Also in this case, since the float 44 floats on the water surface, the position of the water surface on the downstream side of the drop work 14 always changes, and the amount of potential energy of the water stream that can be used by the hydroelectric generator 10 is the float 44. Is the potential energy due to the difference between the position of the floating water surface and the position of the upstream water surface or the upper surface of the water intake 26.

この実施形態の水力発電装置７０によっても、上記実施形態の水力発電装置と同様の効果が得られ、導水菅７２が任意の長さに伸縮可能であるので、水深の変化に応答性良く追随し、効率的な発電を可能とする。   The hydroelectric generator 70 of this embodiment also provides the same effects as the hydroelectric generator of the above embodiment, and the water trough 72 can be expanded and contracted to an arbitrary length, so that it can follow changes in water depth with good responsiveness. , Enabling efficient power generation.

なお、この発明の発電装置は上記実施形態に限定されず、枠体の形状は適宜設定可能なものであり、吊り下げる梁部材の形状も適宜選択可能なものである。フロートの形状やガイドバーの本数、取付位置等も適宜設定可能なものである。   The power generator of the present invention is not limited to the above embodiment, and the shape of the frame can be set as appropriate, and the shape of the suspended beam member can also be selected as appropriate. The shape of the float, the number of guide bars, the mounting position, etc. can be set as appropriate.

１０，７０ 水力発電装置
１１ 発電装置本体
１２ 水路
１４ 落差工
１６ 梁部材
２０ 枠体
２２ 取水胴
２６ 取水口
２７ 水位計
２８ バイパス口
２８ａ 蓋部材
３０ モータ
３２ 水絞り部
３６ スクリュウ管
３８ 回転スクリュウ
４０ 固定ガイドベーン
４２，７２ 導水菅
４４ フロート
４６ ガイドバー
４８ 固定ガイド
５０ シャフト
６０ 発電機 DESCRIPTION OF SYMBOLS 10,70 Hydroelectric power generation device 11 Power generation device main body 12 Water channel 14 Drop work 16 Beam member 20 Frame body 22 Water intake drum 26 Water intake port 27 Water level gauge 28 Bypass port 28a Cover member 30 Motor 32 Water constriction part 36 Screw pipe 38 Rotating screw 40 Fixed Guide vanes 42, 72 Water guide 44 Float 46 Guide bar 48 Fixed guide 50 Shaft 60 Generator

Claims (5)

中心軸が垂直に設けられ内側を水が上方から下方に向かって通過する取水胴と、前記取水胴の下方に同軸に設けられた水絞り部と、前記水絞り部の下方に設けられた回転スクリュウと、前記回転スクリュウに固定されたシャフトに連結された発電機とが設けられた発電装置本体を有し、
前記発電装置本体を保持した枠体と、前記枠体が固定された梁部材とを備え、
前記発電装置本体が固定された前記枠体を前記梁部材に固定した状態で、前記発電装置本体が、前記梁部材により水路の落差工に吊り下げられて固定され、
前記枠体は、矩形に形成され前記発電装置本体を収容して一対の前記梁部材に前記枠体の上端部が固定され、前記一対の梁部材は、前記水路の両岸に設置された台座に固定され、
前記回転スクリュウの下流側には、前記回転スクリュウを通過した水を流す導水菅を備え、前記導水菅は前記回転スクリュウと同軸且つ伸縮自在に設けられ、前記導水菅の下端部側にはフロートが固定され、前記フロートにより前記導水菅の下端部側が前記水路の水量により上下動可能に設けられていることを特徴とする水力発電装置。 A water intake cylinder in which the central axis is provided vertically and water passes from the upper side to the lower side, a water throttle part provided coaxially below the water intake cylinder, and a rotation provided below the water throttle part A power generator main body provided with a screw and a generator connected to a shaft fixed to the rotating screw;
A frame body holding the power generation device main body, and a beam member to which the frame body is fixed,
In a state where the frame body to which the power generation device main body is fixed is fixed to the beam member, the power generation device main body is suspended and fixed to a water drop by the beam member,
The frame is formed in a rectangular shape, accommodates the power generation device main body, the upper ends of the frame are fixed to a pair of beam members, and the pair of beam members are pedestals installed on both sides of the water channel Fixed to
On the downstream side of the rotary screw, there is a water conduit that allows the water that has passed through the rotary screw to flow, the water conduit is provided coaxially and telescopically with the rotary screw, and a float is provided on the lower end side of the water conduit. The hydroelectric power generator is fixed, and is provided such that the lower end side of the water conduit is movable up and down by the amount of water in the water channel . 前記導水菅は、複数の直径の異なる筒体が同心状に摺動自在に嵌合したものである請求項１記載の水力発電装置。   The hydroelectric generator according to claim 1, wherein the water conduit is a concentric sliding fit of a plurality of cylinders having different diameters. 前記導水菅は、蛇腹状の伸縮自在な筒体である請求項１記載の水力発電装置。   The hydroelectric generator according to claim 1, wherein the water conduit is a bellows-like elastic tube. 前記取水胴には取水口が設けられ、前記取水口の開口部が前記落差工の上流側の水路に向かって開口し、前記取水口には水流を前記取水胴の外へ逃がすバイパス口が形成されている請求項１記載の水力発電装置。   The intake cylinder is provided with an intake opening, an opening of the intake opening is opened toward a water channel upstream of the drop work, and a bypass opening is formed in the intake opening to allow the water flow to escape to the outside of the intake cylinder. The hydroelectric power generator according to claim 1. 前記バイパス口には蓋部材が設けられ、前記蓋部材は水位計により作動するモータにより開閉自在に設けられている請求項４記載の水力発電装置。
The hydroelectric generator according to claim 4, wherein a lid member is provided at the bypass port, and the lid member is provided so as to be freely opened and closed by a motor operated by a water level gauge.
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