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WO2001090537A1 - Turbine sans danger pour les poissons - Google Patents

Turbine sans danger pour les poissons Download PDF

Info

Publication number
WO2001090537A1
WO2001090537A1 PCT/US2001/016995 US0116995W WO0190537A1 WO 2001090537 A1 WO2001090537 A1 WO 2001090537A1 US 0116995 W US0116995 W US 0116995W WO 0190537 A1 WO0190537 A1 WO 0190537A1
Authority
WO
WIPO (PCT)
Prior art keywords
runner
turbine
blades
fish
trailing edge
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US2001/016995
Other languages
English (en)
Inventor
Thomas C. Cook
Apostolos K. Fetfatsidis
Philip S. Stacy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand Energy Systems Corp
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 Ingersoll Rand Energy Systems Corp filed Critical Ingersoll Rand Energy Systems Corp
Priority to AU2001274968A priority Critical patent/AU2001274968A1/en
Publication of WO2001090537A1 publication Critical patent/WO2001090537A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
    • F03B3/02—Machines or engines of reaction type; Parts or details peculiar thereto with radial flow at high-pressure side and axial flow at low-pressure side of rotors, e.g. Francis 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
    • 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
    • F03B11/04—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 diminishing cavitation or vibration, e.g. balancing
    • 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 invention relates to a hydro turbine runner constructed to allow fish to pass through the runner without injury.
  • the invention provides an improved runner for a hydro turbine, the runner including at least two turbine blades, the turbine blades each having a trailing edge.
  • the runner embodying the invention is constructed to provide a maximum rate of pressure change through the runner of 80 psi per second, a maximum velocity gradient through the runner of 15 feet per second per inch, and a minimum turbine pressure at the trailing edge of the turbine blade of 10 psia.
  • the invention further provides a new design for the region between a conventional scroll case and the hydro turbine runner.
  • This region normally has many short wicket gates around the circumference of the runner.
  • the new design expands this region to contain relatively few but unusually long wicket gates and a curved vaneless space downstream thereof to gradually turn the flow and produce an axial flow component into the runner.
  • Inflow to the hydro turbine runner is based on continuity and conservation of angular momentum.
  • the gate opening at the best efficiency point was set about equal to the gate height or radial space width, b.
  • the opening between the gates at the BEP is considerably smaller than the wicket gage height.
  • the desire for large clearances resulted in relatively few, long gates and corresponding long parallel surfaces to form the radial space width (in the axial direction) to accommodate the gate rotation.
  • a gradually curved and vaneless downturn space is used to provide the desired mixed inflow to the Runner. This inflow reduces blade loading, flow separation and minimizes pressure changes with time, all favorable for safe fish passage.
  • Fig. 1 is an end view of a fish-friendly turbine embodying the present invention.
  • Fig. 2 is a view taken along line 2-2 in Fig. 1.
  • Fig. 3 is a side view of a two-blade ranner assembly.
  • Fig. 4 is a perspective view of a three-blade runner assembly.
  • FIGs. 1 and 2 illustrate a fish-friendly turbine 10 that includes a scroll case 14 having an inlet 18. Water enters the scroll case 14 through the inlet 18 as shown by the arrow 22. The water flows through the scroll case 14 and into the a radial vaned space 26 through entrances 30. The water flows over vanes 34 within the radial vaned space 26 and enters a vaneless space 38 through another entrance 42. The vaneless space 38 is curved, and is used to provide the desired mixed inflow to the runner 46.
  • the water then enters a runner 46 of the turbine 10.
  • Turbine blades 50 rotate within the runner 46 to move the water along, and a rotatable shroud 52 surrounds the blades 50.
  • a hub 54 is positioned in the runner 46 and the water flows between the hub 54 and the rotating blades 50.
  • the runner 46 includes a diameter 58 that is preferably 13 feet to reduce fabrication and installation costs and make the runner potentially viable as a replacement for existing hydroturbines.
  • the water enters the runner 46 at the leading edge 62 of the blades 50 and exits the runner 46 at the trailing edge 66 of the blades 50.
  • the water then flows into a draft tube 70 that preferably has an area ratio of 4:1.
  • the radial component of velocity of flow is known at any radius for a given radial space width.
  • the radial and tangential components of velocity combine to produce a known absolute inflow angle to the runner 46.
  • the scroll case 14 distributes flow uniformly around the runner entrance. Wicket gates are employed between the scroll case 14 and the runner 46 to regulate and shut off water flow. It is desirable to provide the maximum practicable opening for safe fish passage. To achieve this end, the gate opening is set at the best efficiency point.
  • the best efficiency point is about equal to the gate height or radial space width.
  • Conventional hydraulic turbines have relatively small openings between the gates at the best efficiency point.
  • the present invention provides large clearances, which results in relatively few, long gates and corresponding long parallel surfaces.
  • the long gates and long parallel surfaces define a radial space width (in the axial direction) that accommodates gate rotation.
  • the illustrated turbine 10 has 75-85 feet of actual head across the runner 46, and permits 1000 cubic feet per second of water flow into the runner 46.
  • the turbine substantially meets the following biological criteria that are favorable for safe fish passage through the runner 46: minimum pressure of 10 psia, maximum velocity gradient of 15 ft/sec/in, and maximum rate of pressure change of 80 psi/sec.
  • the runner 46 may include two or three blades 50, but the three-blade design has been found to perform better than the two-blade design with respect to the design parameters just listed.
  • Fig. 3 illustrates a two-blade design
  • Fig. 4 illustrates a three- blade design.

Landscapes

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

Abstract

Roue mobile (46) de turbine hydraulique possédant un moyeu (54) et deux ou plusieurs aubes de turbine (50). Cette roue mobile est caractérisée par une pression minimum de 10 psia au niveau du bord arrière (66) des aubes, un gradient de vitesse maximum de 15 pieds/sec/in et un taux de variation de pression de 80 psi/sec.
PCT/US2001/016995 2000-05-24 2001-05-24 Turbine sans danger pour les poissons Ceased WO2001090537A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001274968A AU2001274968A1 (en) 2000-05-24 2001-05-24 Fish-friendly turbine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US20677400P 2000-05-24 2000-05-24
US60/206,774 2000-05-24

Publications (1)

Publication Number Publication Date
WO2001090537A1 true WO2001090537A1 (fr) 2001-11-29

Family

ID=22767895

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/016995 Ceased WO2001090537A1 (fr) 2000-05-24 2001-05-24 Turbine sans danger pour les poissons

Country Status (2)

Country Link
AU (1) AU2001274968A1 (fr)
WO (1) WO2001090537A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3644056A (en) * 1970-03-06 1972-02-22 Koninkl Maschf Stork Nv Centrifugal pump
US4143999A (en) * 1974-04-09 1979-03-13 Weir Pumps Limited Fluid machines
US4317330A (en) * 1979-12-10 1982-03-02 Mihaly Brankovics Water turbine generator system
US5071314A (en) * 1990-05-18 1991-12-10 Solbjorn Jacobsen Method and fish pump for pumping up fish from a cod end
US5997242A (en) * 1996-12-02 1999-12-07 Alden Research Laboratory, Inc. Hydraulic turbine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3644056A (en) * 1970-03-06 1972-02-22 Koninkl Maschf Stork Nv Centrifugal pump
US4143999A (en) * 1974-04-09 1979-03-13 Weir Pumps Limited Fluid machines
US4317330A (en) * 1979-12-10 1982-03-02 Mihaly Brankovics Water turbine generator system
US5071314A (en) * 1990-05-18 1991-12-10 Solbjorn Jacobsen Method and fish pump for pumping up fish from a cod end
US5997242A (en) * 1996-12-02 1999-12-07 Alden Research Laboratory, Inc. Hydraulic turbine

Also Published As

Publication number Publication date
AU2001274968A1 (en) 2001-12-03

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