WO2018105429A1 - 加速ダクト - Google Patents

加速ダクト Download PDF

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Publication number
WO2018105429A1
WO2018105429A1 PCT/JP2017/042464 JP2017042464W WO2018105429A1 WO 2018105429 A1 WO2018105429 A1 WO 2018105429A1 JP 2017042464 W JP2017042464 W JP 2017042464W WO 2018105429 A1 WO2018105429 A1 WO 2018105429A1
Authority
WO
WIPO (PCT)
Prior art keywords
bottom plate
acceleration duct
duct according
cylindrical
side wall
Prior art date
Application number
PCT/JP2017/042464
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
鈴木　政彦
Original Assignee
株式会社ベルシオン
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社ベルシオン filed Critical 株式会社ベルシオン
Priority to CN201780075579.XA priority Critical patent/CN110337540A/zh
Priority to KR1020197019545A priority patent/KR20190110534A/ko
Publication of WO2018105429A1 publication Critical patent/WO2018105429A1/ja

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Classifications

    • 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
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/10—Submerged units incorporating electric generators or motors
    • 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
    • F03B17/00—Other machines or engines
    • F03B17/06—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/02—Influencing flow of fluids in pipes or conduits
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to an acceleration duct that is disposed at a front portion of a rotor in a hydroelectric generator so that a water flow in a water channel can be accelerated and applied to a rotor blade.
  • Patent Document 1 discloses that a duct is disposed at a front portion of a water turbine rotor.
  • a turbine rotor is disposed inside a long duct, and the front end of the duct has a trumpet tubular shape with a large diameter.
  • the present invention provides an acceleration duct in which the width of the front portion of the duct is increased, the water flow is made closer to the side wall, and the water flow is accelerated and sent at the rear portion of the duct.
  • the present invention has taken the following technical means in order to solve the above-mentioned problems.
  • the middle portion of the inner side surface is curved inwardly bulging, and the height of the tip end portion is increased.
  • the acceleration duct according to any one of (1) to (4), wherein the height is set higher than the height of the cylindrical portion.
  • the lid portion is formed in a bowl shape from the front end portion of the side wall to the central portion of the front end of the cylindrical portion.
  • the bottom plate front portion of the cylindrical portion is gradually widened forward, and a side wall is erected on the side end portion thereof.
  • the water flow entering from the front of the wide bottom plate is gradually brought closer by the side wall to reach the cylindrical portion. Even if the water depth is shallow at half the height of the cylindrical part, if the width of the front part of the bottom plate is, for example, twice the width of the cylindrical part, the water flow entering the cylindrical part becomes full, and Since it is pressurized, it is accelerated more than the flow velocity of the water channel.
  • the width of the front end portion of the bottom plate is larger than the width of the cylindrical portion, for example, more than 1.5 times, and thus, for example, 1.5 times the flow rate in the water channel.
  • An amount of water flow can be directed to the tube.
  • one side end of the bottom plate is parallel to the cylindrical part, and the other side projects outwardly toward the tip, so the side part parallel to the cylindrical part is
  • the water flow is disposed close to the side wall of the water channel, the water flow can be gathered from the front end on the other side to collect the water flow in the tubular portion.
  • the roof wall extends from the end part of the side wall to the central part of the end of the tubular part. Since the cover portion is formed in a shape, the water flow passing along the inner surface of the side wall descends inward and downstream along the cover portion and passes to the cylindrical portion.
  • the tip of the water guide plate is brought into close contact with the bottom surface of the water channel by water pressure.
  • the bottom layer flow can be guided into the duct.
  • the side plate is made of an elastic material, when installed in a water channel, it is not easily damaged even if it collides with a side wall or a large falling material collides. . Moreover, since it has elasticity, it adheres to a side wall surface, water leakage does not arise, and the fall of the water pressure concerning a duct can be suppressed.
  • FIG. 7 is a longitudinal sectional side view taken along line VII-VII in FIG. 6. It is a front view in FIG. FIG. 7 is a rear view in FIG. 6.
  • an acceleration duct 1 has a front portion of a bottom plate 3 of a cylindrical portion 2 that extends forward in plan view, and projects rightward in a right view in FIG. Yes.
  • the left side surface when viewed from the right side is linear with the cylindrical portion 2.
  • Side walls 4 and 5 are erected on left and right ends of the bottom plate 3, respectively.
  • the right side wall 4 rises gradually from the front end of the cylindrical portion 2 to the front end of the side wall 4, and its upper surface is a curved surface.
  • the left side wall 5 is substantially the same height as the cylindrical portion 2 and has a straight shape. Thus, the left side wall 5 is brought into contact with the side wall of the water channel and is fixed by a rope or the like.
  • each side wall 4, 5 From the upper surface of each side wall 4, 5, the inwardly hooked lid parts 6, 7 have a constant width and extend from the front end to the front end of the cylindrical part 2, and the side walls 4, 5 and the lid part
  • the boundary with 6 and 7 is an arc curved surface.
  • the left and right support legs 8, 8 are arranged on the front surface of the bottom surface of the bottom plate 3 so that the height can be adjusted.
  • a water guide plate 9 that is inclined downward is disposed at the front end of the bottom plate 3 so that the front portion is in contact with the bottom of the water channel R.
  • the water guide plate 9 is made of an elastic material such as synthetic rubber so that the lower surface of the front end can be in close contact with the bottom of the water channel.
  • FIG. 5 is a side view showing a state where the acceleration duct 1 is used in a water channel.
  • an outward flange 10 is formed on the rear end peripheral surface of the cylindrical portion 2 of the acceleration duct 1.
  • the outward flange 10 is connected to the outward flange 13 of the support ring 12 of the hydroelectric power generation unit 11.
  • a suspension pipe 14 that protrudes from the upper portion of the support ring 12 is suspended from a suspension frame 15 that is installed between both banks of the water channel R.
  • the upper end of the suspension pipe 14 is connected to the generator 16. It is connected to.
  • a bearing housing 17 is fixed to the lower end portion of the suspension tube 14.
  • a rotor 18 is fixed to the tip of the rotor shaft that is horizontally supported by the bearing housing 17.
  • the rotor shaft is connected to the generator 16 via a transmission shaft (not shown) in the suspension pipe 14.
  • the rearward outward flange 13 ⁇ / b> A of the support ring 12 is connected to the frontward outward flange 20 of the drainage duct 19 connected to the rear part.
  • the drainage duct 19 has a larger diameter at the rear port 19A than at the front port 19B.
  • the water flow brought to the center of the bottom plate 3 advances to the cylindrical part 2 while raising the water level, passes through the cylinder part 2 in full, and applies a uniform water pressure to the rotor 18 immediately after it to rotate it. Let Just before the tubular portion 2, excess water overflows and passes over the upper surface of the tubular portion 2.
  • the rear opening 19 ⁇ / b> A is formed larger than the front opening 19 ⁇ / b> B, so that the inside of the support ring 12 in which the rotor 18 is accommodated becomes a bottleneck, and the passage speed of the water flow becomes high.
  • the drain duct 19 has a large rear opening 19A, the rear portion of the drain duct 19 has a negative pressure rather than the water pressure applied to the inside of the support ring 12, and the front water flow becomes a high-speed flow due to the difference in water pressure. And the rotational efficiency of the rotor 18 can be increased.
  • the bottom surface of the irrigation channel R has a slope
  • the acceleration duct 1 has the front portion lifted higher by the support column 8, so that the water flow passing through the inside is subjected to gravity and the flow velocity is faster than the water flow in the water channel R.
  • FIG. 6 is a plan view showing another embodiment of the acceleration duct.
  • the same members as those of the previous example are denoted by the same reference numerals and description thereof is omitted.
  • the acceleration duct 1 is divided into two parts from the center of the width in plan view, and the right and left coupling parts 1 ⁇ / b> C and 1 ⁇ / b> C are joined together by bolts 1 ⁇ / b> D.
  • the left and right side walls 4 and 5 of the acceleration duct 1 are formed symmetrically. Thereby, a large-sized duct can also be easily manufactured with a metal mold. Moreover, since it can be transported to the site and assembled on site, it is excellent in transportation and workability. In addition, lifting is suppressed by fixing a weight to the lower surface of the front part of a baseplate so that attachment or detachment is possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Hydraulic Turbines (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
PCT/JP2017/042464 2016-12-06 2017-11-27 加速ダクト WO2018105429A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780075579.XA CN110337540A (zh) 2016-12-06 2017-11-27 加速管道
KR1020197019545A KR20190110534A (ko) 2016-12-06 2017-11-27 가속 덕트

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-237024 2016-12-06
JP2016237024A JP2018091457A (ja) 2016-12-06 2016-12-06 加速ダクト

Publications (1)

Publication Number Publication Date
WO2018105429A1 true WO2018105429A1 (ja) 2018-06-14

Family

ID=62491525

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/042464 WO2018105429A1 (ja) 2016-12-06 2017-11-27 加速ダクト

Country Status (4)

Country Link
JP (1) JP2018091457A (ko)
KR (1) KR20190110534A (ko)
CN (1) CN110337540A (ko)
WO (1) WO2018105429A1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021024888A1 (ja) * 2019-08-07 2021-02-11 Ntn株式会社 水力発電装置用集水装置および水力発電装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6951184B2 (ja) * 2017-10-11 2021-10-20 Ntn株式会社 横軸水車装置
JP7048004B2 (ja) * 2018-04-02 2022-04-05 幸雄 大原 小型水力発電用水車装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS529775B2 (ko) * 1974-11-08 1977-03-18
JPS6210475A (ja) * 1985-07-08 1987-01-19 Nagahisa Koyama 波力発電方式
JP2001020844A (ja) * 1999-07-01 2001-01-23 Michio Takaoka 津波発電方法
JP2002021038A (ja) * 2000-04-19 2002-01-23 Koichi Ochiai 揚水装置及び水質浄化システム
JP2005155334A (ja) * 2003-11-20 2005-06-16 Hokuriku Regional Development Bureau Ministry Land Infrastructure & Transport 水力エネルギ回収ユニット
US20070020097A1 (en) * 2003-10-13 2007-01-25 Ursua Isidro U Turbine housing and floatation assembly
JP2014234759A (ja) * 2013-05-31 2014-12-15 浩平 速水 発電システム

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0227739D0 (en) * 2002-11-28 2003-01-08 Marine Current Turbines Ltd Supporting structures for water current (including tidal stream) turbines
CN1635274A (zh) * 2003-12-25 2005-07-06 王瑛 产生自转动力的方法及其动力机
US20080018114A1 (en) * 2006-07-24 2008-01-24 Ken Weldon Harvesting and transporting energy from water wave action to produce electricity hydraulically within a floating ship or vessel
JP2010112194A (ja) 2008-11-04 2010-05-20 Mitsuba Corp 小型水力発電装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS529775B2 (ko) * 1974-11-08 1977-03-18
JPS6210475A (ja) * 1985-07-08 1987-01-19 Nagahisa Koyama 波力発電方式
JP2001020844A (ja) * 1999-07-01 2001-01-23 Michio Takaoka 津波発電方法
JP2002021038A (ja) * 2000-04-19 2002-01-23 Koichi Ochiai 揚水装置及び水質浄化システム
US20070020097A1 (en) * 2003-10-13 2007-01-25 Ursua Isidro U Turbine housing and floatation assembly
JP2005155334A (ja) * 2003-11-20 2005-06-16 Hokuriku Regional Development Bureau Ministry Land Infrastructure & Transport 水力エネルギ回収ユニット
JP2014234759A (ja) * 2013-05-31 2014-12-15 浩平 速水 発電システム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021024888A1 (ja) * 2019-08-07 2021-02-11 Ntn株式会社 水力発電装置用集水装置および水力発電装置

Also Published As

Publication number Publication date
CN110337540A (zh) 2019-10-15
JP2018091457A (ja) 2018-06-14
KR20190110534A (ko) 2019-09-30

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