WO2019176780A1 - Water turbine duct - Google Patents

Water turbine duct Download PDF

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Publication number
WO2019176780A1
WO2019176780A1 PCT/JP2019/009384 JP2019009384W WO2019176780A1 WO 2019176780 A1 WO2019176780 A1 WO 2019176780A1 JP 2019009384 W JP2019009384 W JP 2019009384W WO 2019176780 A1 WO2019176780 A1 WO 2019176780A1
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Prior art keywords
duct
water turbine
water
dust
dust guide
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PCT/JP2019/009384
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French (fr)
Japanese (ja)
Inventor
鈴木　政彦
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Ntn株式会社
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Publication of WO2019176780A1 publication Critical patent/WO2019176780A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F03B11/08—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator for removing foreign matter, e.g. mud
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/04—Machines or engines of reaction type; Parts or details peculiar thereto with substantially axial flow throughout rotors, e.g. propeller turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B7/00—Water wheels
    • 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

Definitions

  • the present invention relates to a water turbine duct that is disposed in the front part of a water turbine and can remove naturally flowing dust through the upper surface of the water turbine using the water flow.
  • Patent Document 1 discloses a dust removing device using a water flow.
  • the present invention provides a water turbine duct that allows flowing dust and the like to pass over the upper surface of a rotor using a water flow.
  • the present invention has taken the following technical means in order to solve the above problems.
  • a plurality of dust guide rods facing in the front-rear direction and inclined rearward upward on the bottom surface of the turbine turbine duct having a U-shaped cross section are arranged in a row in such a manner that their upper ends are inclined obliquely upward in the downstream direction.
  • a duct for a water turbine which is arranged with a gap between them.
  • connection portion for connecting a water turbine casing including a water turbine rotor is formed at a rear portion of the duct.
  • a plurality of dust guide rods are arranged in parallel inside the water turbine duct with the upper end thereof being obliquely upward at the rear upper portion and a predetermined gap. Therefore, when a water turbine is installed at the rear of this water turbine duct, the dust flowing down by the water flow and entering the duct is caught by the dust guide rod and pushed up by the water flow and slides on the upper surface of the dust guide rod. Then, it flows down over the turbine rotor and is removed. If the water wheel is equal to or lower than the height of the rear part of the dust guide rod, the dust passes over the water wheel.
  • the rear end portion of the dust guide rod is formed so as to exceed the upper surface of the water turbine fixed to the rear portion of the duct. It can arrange
  • the dust guide rod is an arc curved surface whose front surface protrudes forward and upward in a side view, so that the dust hitting the front surface of the dust guide rod is pushed by the water flow and the dust guide rod It slides down the front and moves down to the upper surface.
  • the dust guide rod is formed in a substantially fish shape in which the cross-sectional plane shape is thick at the front and narrows toward the rear, so that the water flow hitting the front surface of the dust guide rod has a Coanda effect.
  • the duct is formed with a connecting portion for connecting a water turbine casing provided with a rotor at the rear, so that the duct is connected to the front portion of the water turbine casing (inside the water turbine).
  • the running water in the water channel can be collected by the duct, and the rotor of the water wheel in the water wheel casing can be rotated, and the dust in the running water can flow down beyond the upper surface of the water wheel case.
  • the side wall of the duct is formed in such a manner that the rear end portion of the dust guide rod is low and gradually increases toward the front in a side view. Can be incorporated. And since the rear part is formed low, dust can be easily passed over the upper surface of the dust guide rod.
  • the duct is a plan view in which the front part of the left and right side walls is gradually opened outward from the middle of the height, so that a large thing such as a tree branch flows down. However, it can be guided inside the duct and passed downstream beyond the upper surface of the dust guide rod.
  • FIG. 2 is a rear view of the water turbine duct shown in FIG. 1. It is a top view which shows the duct for water turbines shown in FIG. 1, FIG. FIG. 4 is a vertical side view taken along line IV-IV in FIG. 3.
  • the turbine wheel duct 1 shown in the figure (hereinafter simply referred to as a duct) is formed with a substantially U-shaped groove portion 2 in the front view of FIG. 1, and the left and right side walls 2A and 2B have their front upper portions facing outward. Wide open.
  • the rear portions of the side walls 2A and 2B have a height slightly higher than the height of the water turbine 5 disposed at the rear portion of the duct 1, and the front portions of the side walls 2A and 2B have dust guide rods 3, 3 is higher than the upper surface of 3.
  • a plurality of dust guide rods 3 and 3 are arranged in a row on the bottom surface 2C between the left and right side walls 2A and 2B with an appropriate gap 3A.
  • a water wheel connecting portion 4 is formed in a ring shape with the upper portion lacking only the width of the groove portion 2, and the outward flange 4A is formed at the rear portion of the side walls 2A and 2B. Fastened and fixed by screws 4B.
  • FIG. 3 which is a plan view of the duct 1
  • the front upper portions of the left and right side walls 2 ⁇ / b> A and 2 ⁇ / b> B are bent so as to lie on the right and left sides.
  • the front part of the bottom surface 2C of the groove part 2 of the duct 1 is formed wider than the rear part, and the lower part of the plurality of dust guide rods 3 opens a suitable gap 3A in a row in the front part of the bottom surface 2C. It is fixed.
  • the upper part rises obliquely upward from the base fixed to the bottom surface 2C, and the rear end extends upward of the water turbine connecting part 4, and the side view protrudes from the rear part to the upper front part and is gentle toward the base part.
  • An arc curved surface is formed so that dust can easily slide on the surface from the front to the rear.
  • the rear end portion of the dust guide rod 3 is formed so as to protrude rearward from the rear end portions of the side walls 2 ⁇ / b> A and 2 ⁇ / b> B and to reach the upper portion of the water turbine connecting portion 4.
  • a turbine casing 8 indicated by a virtual line in FIG. 4 is connected to the turbine connecting portion 4.
  • a water wheel 5 is suspended inside a water wheel casing 8, and the water wheel 5 includes a rotor 6 at a front portion thereof, and a tip portion of a blade 7 in the rotor 6 is an inclined portion 7 ⁇ / b> A inclined toward the upstream side. ing.
  • the underwater dust that has flowed into the duct 1 contacts the front surface of the dust guide rod 3, moves rearward and upward along the front surface, passes over the rear upper surface of each dust guide rod 3, and is represented by a virtual line in FIG. 4. It passes through the upper surface of the watermill casing 8 shown (the watermill 5 inside).
  • the dust guide rods 3 and 3 on the left and right side portions are such that the upper part of the rear half portion extends outward and covers the inside of the upper surfaces of the left and right side walls 2A and 2B so that the dust is not locked. It is.
  • the thickness of the dust guide rod 3 is determined in accordance with the flowing water load when the dust is locked and the water accumulates, and the shape of the cross section is thick at the front part as in the rear end face shown in FIG. It is made into a substantially fish shape that is gradually thinner to the rear, and the water flow is allowed to pass at a high speed by the Coanda effect so as to avoid the stagnation of the water flow.
  • the gap 3A between the adjacent dust guide rods 3 and 3 has a size that does not cause any trouble even if the dust passing through the gap 3A hits the blade 7 of the water turbine 5 disposed at the rear of the duct 1.
  • the dust passes over the water turbine casing 8 disposed in the rear portion downstream of the duct 1, so that the dust is attracted to the blade 7 in the rotor 6 of the water turbine 5 indicated by the phantom line in FIG. 4.
  • dust is not caught on the dust removal net, so that the trouble of removing the caught dust becomes unnecessary.
  • the gap 3A between the dust guide rods 3 and 3 is directed in the vertical direction of the water flow, when clogged, a long rod or the like is inserted into the lower part of the gap 3A to lift the dust. It can be easily removed and allowed to flow down.
  • a horizontal rail (not shown) may be fixed to an intermediate portion in the height direction of the dust guide rod 3 to suppress the horizontal shake of each dust guide rod 3.
  • the dust guide rods 3 are arranged in a double front and rear direction, and the gap 3A between the dust guide rods 3 at the front part is made larger than the gap at the rear part, so that large dust such as dead branches is collected. It can be made to flow.
  • dust guide rods are installed in the duct so that the dust flowing down can pass over the upper part of the rotor using the water flow. It can be used as a high duct.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Turbines (AREA)

Abstract

The purpose of the present invention is to provide a water turbine duct which is disposed forward of a water turbine disposed in a water channel, which enables debris flowing downstream to pass over the upper surface of the water turbine and continue flowing downstream, and which enables the debris to be easily removed. This water turbine duct has a U-shaped cross-section, and at the bottom surface thereof, disposed are a plurality of debris-guiding rods which are oriented in the front-rear direction and rear parts of which are inclined upwards. The upper ends of the rods are oriented so as to be inclined upwards in the downstream direction, and the rods are disposed in horizontal rows with a prescribed gap therebetween.

Description

水車用ダクトTurbine duct
　本発明は、水車の前部に配設し、流れて来る塵埃を水流を利用して、水車の上面を通過させて自然に除去することができる水車用ダクトに関する。 The present invention relates to a water turbine duct that is disposed in the front part of a water turbine and can remove naturally flowing dust through the upper surface of the water turbine using the water flow.
　水路に水車を配設する場合、水路を流れて来る木の枝や葉、その他の夾雑物や塵埃を除くために、水車の手前に櫛状の除塵装置や網などが配設されることがある。一方で、水流を利用した除塵装置が、特許文献１に開示されている。 When a water wheel is installed in a water channel, a comb-like dust removing device or a net may be installed in front of the water wheel to remove branches and leaves of trees flowing through the water channel, other impurities, and dust. is there. On the other hand, Patent Document 1 discloses a dust removing device using a water flow.
特開２００４－２７５９４２号公報JP 2004-275842 A
　従来の一般的な除塵装置では、木の葉などによる目詰まりが生じると、水が溢れたり、また除塵装置に付着した塵埃を除去するために、多大な手間を要する。
　一方、特許文献１に記載されている発明においては、流れて来た木の葉などの除去が困難であり、かつドラムスクリーンのような大きな装置を必要とするので、コスト高になる。
　本発明は、流れて来る塵埃等を、水流を利用して、ロータの上面を超えて通過させるようにした水車用ダクトを提供するものである。 In a conventional general dust removing device, when clogging occurs due to leaves or the like, water overflows and it takes a lot of labor to remove the dust attached to the dust removing device.
On the other hand, in the invention described in Patent Document 1, it is difficult to remove the leaves that have flowed, and a large device such as a drum screen is required, resulting in high costs.
The present invention provides a water turbine duct that allows flowing dust and the like to pass over the upper surface of a rotor using a water flow.
　本発明は、前記課題を解決するために、次のような技術的手段を講じた。 The present invention has taken the following technical means in order to solve the above problems.
　（１）断面Ｕ字状の水車用ダクトの底面に、前後方向を向き、かつ後部が上向き傾斜する複数の塵案内杆を、その上端を下流方向の上方へ斜めに向けて、横列に所定の間隙を開けて配設してなる水車用ダクト。 (1) A plurality of dust guide rods facing in the front-rear direction and inclined rearward upward on the bottom surface of the turbine turbine duct having a U-shaped cross section are arranged in a row in such a manner that their upper ends are inclined obliquely upward in the downstream direction. A duct for a water turbine, which is arranged with a gap between them.
　（２）前記塵案内杆の後端部を、水車用ダクトの後部に配設されている水車の上面を超えるように形成されている前記（1）に記載の水車用ダクト。 (2) The water turbine duct according to (1), wherein a rear end portion of the dust guide rod is formed so as to exceed an upper surface of a water turbine disposed at a rear portion of the water turbine duct.
　（３）前記塵案内杆を、後上方へ向かって凸曲するものとしてなる前記（1）または（2）に記載の水車用ダクト。 (3) The water turbine duct according to (1) or (2), wherein the dust guide rod is bent upward and rearward.
　（４）前記塵案内杆の横断平面形は、前部が太く、後方へかけて細くなる略魚形をなしている前記（1）～（3）のいずれかに記載の水車用ダクト。 (4) The water turbine duct according to any one of (1) to (3), wherein the cross-sectional shape of the dust guide rod is substantially fish-shaped with a thick front part and a narrower part toward the rear.
　（５）前記ダクトの後部に、水車のロータを備える水車筐体を連結するための連結部が形成されている前記（1）～（4）のいずれかに記載の水車用ダクト。 (5) The water turbine duct according to any one of (1) to (4), wherein a connection portion for connecting a water turbine casing including a water turbine rotor is formed at a rear portion of the duct.
　（６）前記ダクトの側壁は、側面視で、後部は低く、前部は塵案内杆の後端部の高さとなるように次第に高く形成されている前記（1）～（5）のいずれかに記載の水車用ダクト。 (6) Any one of the above (1) to (5), wherein the side wall of the duct is formed so that the rear part is low and the front part is gradually higher than the rear end part of the dust guide rod in a side view. The duct for water turbines described in 1.
　（７）前記ダクトは、平面視において、左右両側壁の前部が、高さ方向の中間から、上方が次第に外側方へ向かって広開している前記（1）～（6）のいずれかに記載の水車用ダクト。 (7) In the duct, any one of the above (1) to (6), wherein the front portions of the left and right side walls are widened from the middle in the height direction toward the outside gradually from the middle in the height direction. The duct for water turbines described in 1.
　本発明によると、次のような効果が奏せられる。 According to the present invention, the following effects can be obtained.
　前記（1）に記載の発明においては、水車用ダクトの内部に、複数の塵案内杆が、その上端部を、後上部の斜め上向きとし、所定の間隙を開けて並列で配設されているので、この水車用ダクトの後部に水車を配設すると、水流により流下してダクト内に入る塵埃等は、塵案内杆に引っかかり、水流によって押上げられて、塵案内杆の上面を滑って水車ロータの上を超えて流下し除去される。水車が塵案内杆の後部の高さと同じであるか低ければ、塵埃は水車の上を通過する。 In the invention described in the above (1), a plurality of dust guide rods are arranged in parallel inside the water turbine duct with the upper end thereof being obliquely upward at the rear upper portion and a predetermined gap. Therefore, when a water turbine is installed at the rear of this water turbine duct, the dust flowing down by the water flow and entering the duct is caught by the dust guide rod and pushed up by the water flow and slides on the upper surface of the dust guide rod. Then, it flows down over the turbine rotor and is removed. If the water wheel is equal to or lower than the height of the rear part of the dust guide rod, the dust passes over the water wheel.
　前記（2）に記載の発明において塵案内杆の後端部は、ダクトの後部に止着する水車の上面を超えるように形成されているので、ダクトの後部において、水車を塵案内杆より下に位置するように配設し、塵埃を水車の上面を越えて流下させることができる。 In the invention described in (2) above, the rear end portion of the dust guide rod is formed so as to exceed the upper surface of the water turbine fixed to the rear portion of the duct. It can arrange | position so that it may be located in and can flow down dust over the upper surface of a water turbine.
　前記（3）に記載の発明において塵案内杆は、側面視で、前面が前上方へ凸出する弧曲面としてあるので、塵案内杆の前面に当たる塵埃は、水流に押されて塵案内杆の前面を滑りながら上面後方へ移動して流下する。 In the invention described in (3), the dust guide rod is an arc curved surface whose front surface protrudes forward and upward in a side view, so that the dust hitting the front surface of the dust guide rod is pushed by the water flow and the dust guide rod It slides down the front and moves down to the upper surface.
　前記（4）に記載の発明において塵案内杆は、横断平面形が、前部が太く後方へかけて細くなる略魚形に形成されているので、塵案内杆の前面に当たる水流は、コアンダ効果により高速で各塵案内杆の間隙を後方へ通過する。 In the invention described in (4), the dust guide rod is formed in a substantially fish shape in which the cross-sectional plane shape is thick at the front and narrows toward the rear, so that the water flow hitting the front surface of the dust guide rod has a Coanda effect. By passing through the gaps between the dust guide rods at a high speed.
　前記（5）に記載の発明においてダクトは、後部にロータを備えた水車筐体を連結する連結部が形成されているので、水車筐体（内部に水車）の前部にダクトを連結させることにより、水路の流水をダクトで集めて、水車筐体における水車のロータを回転させることができるとともに、流水中の塵埃を、水車筐体の上面を超えて流下させることができる。 In the invention described in (5) above, the duct is formed with a connecting portion for connecting a water turbine casing provided with a rotor at the rear, so that the duct is connected to the front portion of the water turbine casing (inside the water turbine). Thus, the running water in the water channel can be collected by the duct, and the rotor of the water wheel in the water wheel casing can be rotated, and the dust in the running water can flow down beyond the upper surface of the water wheel case.
　前記（6）に記載の発明においてダクトの側壁は側面視で、塵案内杆の後端部分は低く、前部へかけて次第に高くなるように形成されており、水車の高さの水位の流水は取り入れることができる。かつ後部が低く形成されているため、塵埃を塵案内杆の上面を超えて容易に通過させることができる。 In the invention described in (6), the side wall of the duct is formed in such a manner that the rear end portion of the dust guide rod is low and gradually increases toward the front in a side view. Can be incorporated. And since the rear part is formed low, dust can be easily passed over the upper surface of the dust guide rod.
　前記（7）に記載の発明においてダクトは、平面視で、左右両側壁の前部が、高さの中間から上方が次第に外側方へ開いているので、木の枝のような大きなものが流下して来ても、ダクトの内側に導いて、塵案内杆の上面を超えて下流へ通過させることができる。 In the invention described in (7), the duct is a plan view in which the front part of the left and right side walls is gradually opened outward from the middle of the height, so that a large thing such as a tree branch flows down. However, it can be guided inside the duct and passed downstream beyond the upper surface of the dust guide rod.
本発明の水車用ダクトの一実施例を示す正面図である。It is a front view which shows one Example of the duct for water turbines of this invention. 図１に示す水車用ダクトの後面図である。FIG. 2 is a rear view of the water turbine duct shown in FIG. 1. 図１、図２に示す水車用ダクトを前部を右方として示す平面図である。It is a top view which shows the duct for water turbines shown in FIG. 1, FIG. 図３におけるIV－IV線縦断側面図である。FIG. 4 is a vertical side view taken along line IV-IV in FIG. 3.
　本発明の実施形態を、図面を参照して説明する。図３、図４において右方が前部（上流側）である。図に示す水車用ダクト１（以下単にダクトという）は、図１の正面視で、略Ｕ字状の溝部２が形成され、その左右両側壁２Ａ、２Ｂは、前上部が外側方へ向かって広開している。側壁２Ａ、２Ｂの後部は、図４に示すように、ダクト１の後部に配設する水車５の高さを少し超える高さとしてあり、側壁２Ａ、２Ｂの前部は、塵案内杆３、３の上面よりも高く形成されている。 Embodiments of the present invention will be described with reference to the drawings. 3 and 4, the right side is the front (upstream side). The turbine wheel duct 1 shown in the figure (hereinafter simply referred to as a duct) is formed with a substantially U-shaped groove portion 2 in the front view of FIG. 1, and the left and right side walls 2A and 2B have their front upper portions facing outward. Wide open. As shown in FIG. 4, the rear portions of the side walls 2A and 2B have a height slightly higher than the height of the water turbine 5 disposed at the rear portion of the duct 1, and the front portions of the side walls 2A and 2B have dust guide rods 3, 3 is higher than the upper surface of 3.
　左右側壁２Ａ、２Ｂの間の底面２Ｃには、図１に示すように複数の塵案内杆３、３が適度の間隙３Ａを開けて横列に配設されている。側壁２Ａ、２Ｂの後端には、図２に示すように水車連結部４が、上部は溝部２の幅だけを欠いた環形に形成されて、外向きフランジ４Ａを側壁２Ａ、２Ｂの後部にネジ４Ｂにより止着、固定されている。 As shown in FIG. 1, a plurality of dust guide rods 3 and 3 are arranged in a row on the bottom surface 2C between the left and right side walls 2A and 2B with an appropriate gap 3A. At the rear ends of the side walls 2A and 2B, as shown in FIG. 2, a water wheel connecting portion 4 is formed in a ring shape with the upper portion lacking only the width of the groove portion 2, and the outward flange 4A is formed at the rear portion of the side walls 2A and 2B. Fastened and fixed by screws 4B.
　ダクト１の平面視である図３に示すように、左右の側壁２Ａ、２Ｂの前上部が、左右外側方へ向いて横臥するように曲げられている。ダクト１の溝部２の底面２Ｃの前部は後部よりも幅が広く形成されて、底面２Ｃにおける前寄りの部分に、複数の塵案内杆３の下部が、横列に適度の間隙３Ａを開けて固定されている。 As shown in FIG. 3, which is a plan view of the duct 1, the front upper portions of the left and right side walls 2 </ b> A and 2 </ b> B are bent so as to lie on the right and left sides. The front part of the bottom surface 2C of the groove part 2 of the duct 1 is formed wider than the rear part, and the lower part of the plurality of dust guide rods 3 opens a suitable gap 3A in a row in the front part of the bottom surface 2C. It is fixed.
　底面２Ｃに固定された基部から後方へ斜め上向きに上部が立上がり、その後端は水車連結部４の上方へ伸びており、その側面視は、後部から上前方へ凸出して基部へかけて緩やかな弧曲面をなして、その表面を前方から後方へ塵埃が滑り易いように形成されている。 The upper part rises obliquely upward from the base fixed to the bottom surface 2C, and the rear end extends upward of the water turbine connecting part 4, and the side view protrudes from the rear part to the upper front part and is gentle toward the base part. An arc curved surface is formed so that dust can easily slide on the surface from the front to the rear.
　塵案内杆３の後端部は、側壁２Ａ、２Ｂの後端部よりも後方へ突出されて、水車連結部４の上部へかかるように形成されている。
　水車連結部４には、図４に仮想線で示す水車筐体８が接続される。水車筐体８の内部に水車５が吊設されており、水車５はその前部にロータ６を備え、ロータ６におけるブレード７の先端部は、上流側へ向いて傾斜する傾斜部７Ａとされている。 The rear end portion of the dust guide rod 3 is formed so as to protrude rearward from the rear end portions of the side walls 2 </ b> A and 2 </ b> B and to reach the upper portion of the water turbine connecting portion 4.
A turbine casing 8 indicated by a virtual line in FIG. 4 is connected to the turbine connecting portion 4. A water wheel 5 is suspended inside a water wheel casing 8, and the water wheel 5 includes a rotor 6 at a front portion thereof, and a tip portion of a blade 7 in the rotor 6 is an inclined portion 7 </ b> A inclined toward the upstream side. ing.
　ダクト１内に流入した水中の塵埃は、塵案内杆３の前面に接触し、その前面に沿って後上方へ移動し、各塵案内杆３の上面後部を越えて、図４に仮想線で示す水車筐体８（内部に水車５）の上面を通過するようになっている。 The underwater dust that has flowed into the duct 1 contacts the front surface of the dust guide rod 3, moves rearward and upward along the front surface, passes over the rear upper surface of each dust guide rod 3, and is represented by a virtual line in FIG. 4. It passes through the upper surface of the watermill casing 8 shown (the watermill 5 inside).
　また、左右の側部にある塵案内杆３、３は、後半部の上部が外側方へ広がって、左右の側壁２Ａ、２Ｂの上面の内側を覆って、塵埃が係止することがないようにしてある。塵案内杆３の太さは、塵埃が係止されて水が溜まる場合の流水負荷に対応して決められ、その横断面の形は、図２に示す後端面のように、前部が厚く後方へ次第に薄くした略魚形とし、コアンダ効果によって水流を高速で通過させ、水流の滞りを回避させるようになっている。 Further, the dust guide rods 3 and 3 on the left and right side portions are such that the upper part of the rear half portion extends outward and covers the inside of the upper surfaces of the left and right side walls 2A and 2B so that the dust is not locked. It is. The thickness of the dust guide rod 3 is determined in accordance with the flowing water load when the dust is locked and the water accumulates, and the shape of the cross section is thick at the front part as in the rear end face shown in FIG. It is made into a substantially fish shape that is gradually thinner to the rear, and the water flow is allowed to pass at a high speed by the Coanda effect so as to avoid the stagnation of the water flow.
　隣接する塵案内杆３、３間の間隙３Ａは、その間隙３Ａ内を通過する塵埃が、ダクト１の後部に配設される水車５のブレード７に当たっても、支障を及ぼす虞のない大きさとされる。水路を流下する塵埃は、ダクト１内に入った時は、塵案内杆３の前面に当り、水流に押されて塵案内杆３の後部の上面を乗り越えて流下する。 The gap 3A between the adjacent dust guide rods 3 and 3 has a size that does not cause any trouble even if the dust passing through the gap 3A hits the blade 7 of the water turbine 5 disposed at the rear of the duct 1. The When the dust flowing down the water channel enters the duct 1, it hits the front surface of the dust guide rod 3, is pushed by the water flow, gets over the upper surface of the rear portion of the dust guide rod 3, and flows down.
　これによって、ダクト１における下流である後部に配設される水車筐体８の上を、塵埃が通過するので、図４に仮想線で示す水車５のロータ６におけるブレード７に、塵埃が引掛かることはなく、従来のように、除塵網に塵埃が引掛かることがないので、引掛かった塵埃を除去する等の手間が不要となる。 As a result, the dust passes over the water turbine casing 8 disposed in the rear portion downstream of the duct 1, so that the dust is attracted to the blade 7 in the rotor 6 of the water turbine 5 indicated by the phantom line in FIG. 4. However, unlike the prior art, dust is not caught on the dust removal net, so that the trouble of removing the caught dust becomes unnecessary.
　水位が低い時には、塵埃は塵案内杆３の前面に引掛かるが、水位が上昇すると、塵埃は流水によって押上げられ、塵案内杆３の上面を滑りながら流下する。
　もし塵案内杆３が目詰まりして水位が上昇すると、溢れる水は、塵案内杆３の上面を超えて下流方向へ流下するので、水流は水車５のロータ６回転に支障なく十分供給される。 When the water level is low, dust is caught on the front surface of the dust guide rod 3, but when the water level rises, the dust is pushed up by running water and flows down while sliding on the top surface of the dust guide rod 3.
If the dust guide rod 3 is clogged and the water level rises, the overflowing water will flow downstream beyond the upper surface of the dust guide rod 3, so that the water flow is sufficiently supplied to the rotation of the rotor 6 of the water turbine 5 without hindrance. .
　塵案内杆３、３同士の間隙３Ａは、水流の上下方向を向いているので、目詰まりした時は、長い棒等を間隙３Ａの下部に挿入して、塵埃を持ちあげることにより、塵埃を容易に除去して流下させることができる。 Since the gap 3A between the dust guide rods 3 and 3 is directed in the vertical direction of the water flow, when clogged, a long rod or the like is inserted into the lower part of the gap 3A to lift the dust. It can be easily removed and allowed to flow down.
　なお、塵案内杆３の高さ方向の中間部に、図示しない横桟を固定して、各塵案内杆３の横振れを抑止することがある。また図４に示す状態で、塵案内杆３を前後２重として配設し、前部での塵案内杆３同士の間隙３Ａを後部における間隙よりも大きくして、枯枝等の大きな塵を受け流すようにすることができる。 In addition, a horizontal rail (not shown) may be fixed to an intermediate portion in the height direction of the dust guide rod 3 to suppress the horizontal shake of each dust guide rod 3. Further, in the state shown in FIG. 4, the dust guide rods 3 are arranged in a double front and rear direction, and the gap 3A between the dust guide rods 3 at the front part is made larger than the gap at the rear part, so that large dust such as dead branches is collected. It can be made to flow.
　水路において、流下して来る塵埃を、水流を利用して、ロータの上部を超えて通過するように、塵案内杆をダクト内に設けてあるので、水車の前部に設置して除塵効果の高いダクトとして利用することができる。 In the water channel, dust guide rods are installed in the duct so that the dust flowing down can pass over the upper part of the rotor using the water flow. It can be used as a high duct.
１．水車用ダクト
２．溝部
２Ａ、２Ｂ．側壁
２Ｃ．底板
３．塵案内杆
３Ａ．間隙
４．水車連結部
４Ａ．外向フランジ
４Ｂ．ネジ
５．水車
６．ロータ
７．ブレード
７Ａ．前向傾斜部
８．水車筐体 1. 1. Turbine duct Grooves 2A, 2B. Side wall 2C. Bottom plate 3. Dust guide rod 3A. Gap 4. Turbine connecting part 4A. Outward flange 4B. Screw 5. Water wheel 6. Rotor 7. Blade 7A. 7. Forward inclined part Water turbine housing

Claims (7)

  1. 　断面Ｕ字状の水車用ダクトの底面に、前後方向を向き、かつ後部が上向き傾斜する複数の塵案内杆を、その上端を下流方向の上方へ斜めに向けて、横列に所定の間隙を開けて配設してなることを特徴とする水車用ダクト。 A plurality of dust guide rods facing in the front-rear direction and inclined rearward upward on the bottom surface of the U-shaped water turbine duct, with the upper ends thereof inclined obliquely upward in the downstream direction, and a predetermined gap in the rows. A duct for a water turbine characterized by being opened and disposed.
  2. 　前記塵案内杆の後端部を、水車用ダクトの後部に配設されている水車の上面を超えるように形成されていることを特徴とする請求項１に記載の水車用ダクト。 The water turbine duct according to claim 1, wherein a rear end portion of the dust guide rod is formed so as to exceed an upper surface of a water turbine disposed at a rear portion of the water turbine duct.
  3. 　前記塵案内杆を、後上方へ向かって凸曲するものとしてなることを特徴とする請求項１または２に記載の水車用ダクト。 The water turbine duct according to claim 1 or 2, wherein the dust guide rod is bent upward and rearward.
  4. 　前記塵案内杆の横断平面形は、前部が太く、後方へかけて細くなる略魚形をなしていることを特徴とする請求項１～３のいずれかに記載の水車用ダクト。 The turbine duct according to any one of claims 1 to 3, wherein the cross-sectional shape of the dust guide rod has a substantially fish shape with a thick front part and a narrowing toward the rear.
  5. 　前記ダクトの後部に、水車のロータを備える水車筐体を連結するための連結部が形成されていることを特徴とする請求項１～４のいずれかに記載の水車用ダクト。 5. The water turbine duct according to claim 1, wherein a connecting portion for connecting a water turbine casing having a water turbine rotor is formed at a rear portion of the duct.
  6. 　前記ダクトの側壁は、側面視で、後部は低く、前部は塵案内杆の後端部の高さとなるように次第に高く形成されていることを特徴とする請求項１～５のいずれかに記載の水車用ダクト。 6. The duct according to claim 1, wherein the side wall of the duct is formed to be gradually higher so that the rear part is lower and the front part is at the height of the rear end part of the dust guide rod in a side view. The turbine wheel duct described.
  7. 　前記ダクトは、平面視において、左右両側壁の前部が、高さ方向の中間から、上方が次第に外側方へ向かって広開していることを特徴とする請求項１～６のいずれかに記載の水車用ダクト。 7. The duct according to claim 1, wherein, in a plan view, the front portions of the left and right side walls are widened from the middle in the height direction and gradually upward toward the outside. The turbine wheel duct described.
PCT/JP2019/009384 2018-03-14 2019-03-08 Water turbine duct WO2019176780A1 (en)

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JP2018046365A JP2019157775A (en) 2018-03-14 2018-03-14 Duct for water turbine

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008031879A (en) * 2006-07-27 2008-02-14 Michihiro Oe Hydraulic power generating apparatus
JP2009228608A (en) * 2008-03-25 2009-10-08 Michihiro Oe Hydraulic power generation device
JP2014084809A (en) * 2012-10-24 2014-05-12 Matsumoto Tekkosho:Kk Hydraulic power generation system
JP2016200099A (en) * 2015-04-13 2016-12-01 株式会社東芝 Vertical shaft water turbine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5924993B2 (en) * 2011-05-23 2016-05-25 株式会社ミゾタ Turbine generator unit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008031879A (en) * 2006-07-27 2008-02-14 Michihiro Oe Hydraulic power generating apparatus
JP2009228608A (en) * 2008-03-25 2009-10-08 Michihiro Oe Hydraulic power generation device
JP2014084809A (en) * 2012-10-24 2014-05-12 Matsumoto Tekkosho:Kk Hydraulic power generation system
JP2016200099A (en) * 2015-04-13 2016-12-01 株式会社東芝 Vertical shaft water turbine

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