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WO2003076797A1 - Dispositif de stabilisation d'ecoulement pour machines a ecoulement hydraulique - Google Patents

Dispositif de stabilisation d'ecoulement pour machines a ecoulement hydraulique Download PDF

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Publication number
WO2003076797A1
WO2003076797A1 PCT/EP2003/002373 EP0302373W WO03076797A1 WO 2003076797 A1 WO2003076797 A1 WO 2003076797A1 EP 0302373 W EP0302373 W EP 0302373W WO 03076797 A1 WO03076797 A1 WO 03076797A1
Authority
WO
WIPO (PCT)
Prior art keywords
machine according
flow
leading
hydraulic
flow machine
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/EP2003/002373
Other languages
German (de)
English (en)
Inventor
Frank Simon
Thomas Scherer
Ulrich Seidel
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.)
Voith Hydro Holding GmbH and Co KG
Original Assignee
Voith Hydro Holding GmbH and Co KG
Voith Hydro GmbH and Co KG
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 Voith Hydro Holding GmbH and Co KG, Voith Hydro GmbH and Co KG filed Critical Voith Hydro Holding GmbH and Co KG
Publication of WO2003076797A1 publication Critical patent/WO2003076797A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/688—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/141—Shape, i.e. outer, aerodynamic form
    • F01D5/145—Means for influencing boundary layers or secondary circulations
    • 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
    • F03B3/12—Blades; Blade-carrying rotors
    • F03B3/121—Blades, their form or construction
    • 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
    • F03B3/16—Stators
    • F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B63H1/28—Other means for improving propeller efficiency
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/10—Manufacture by removing material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/10—Geometry two-dimensional
    • F05B2250/12—Geometry two-dimensional rectangular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/10—Geometry two-dimensional
    • F05B2250/12—Geometry two-dimensional rectangular
    • F05B2250/121—Geometry two-dimensional rectangular square
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/10—Geometry two-dimensional
    • F05B2250/18—Geometry two-dimensional patterned
    • F05B2250/183—Geometry two-dimensional patterned zigzag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/10—Geometry two-dimensional
    • F05B2250/18—Geometry two-dimensional patterned
    • F05B2250/184—Geometry two-dimensional patterned sinusoidal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/60—Structure; Surface texture
    • F05B2250/61—Structure; Surface texture corrugated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/60—Structure; Surface texture
    • F05B2250/62—Structure; Surface texture smooth
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/10—Manufacture by removing material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/12—Two-dimensional rectangular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/12—Two-dimensional rectangular
    • F05D2250/121—Two-dimensional rectangular square
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/18—Two-dimensional patterned
    • F05D2250/183—Two-dimensional patterned zigzag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/18—Two-dimensional patterned
    • F05D2250/184—Two-dimensional patterned sinusoidal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/60—Structure; Surface texture
    • F05D2250/61—Structure; Surface texture corrugated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/60—Structure; Surface texture
    • F05D2250/62—Structure; Surface texture smooth or fine
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Definitions

  • the invention relates to hydraulic flow machines. It primarily affects water turbines and pump turbines.
  • adjustable structures such as movable guide plates or adjustable impeller blades are used in hydraulic turbomachines.
  • passive and active methods are used to stabilize the flow outside of the optimal operating points in hydraulic turbomachines, such as rigid ones or flexible baffles or the injection of compressed air or water into the main water flow.
  • a disadvantage of the known methods is the high design and manufacturing outlay and their limitation to certain operating states.
  • the invention has for its object to improve the operating behavior of a hydraulic fluid machine. This applies in particular to increasing efficiency and minimizing pressure fluctuations and cavitation.
  • the invention is based on the finding that it is possible to influence the recirculation zone which forms in front of or behind an inflow or outflow edge by an irregularity in the shape of the inflow and / or outflow edge in such a way that the vortex detachment, and as a result thereof z.
  • leading edges are shaped as round as possible and the trailing edges are tapered.
  • the roundness of the leading edge allows varying angles of attack in a certain range.
  • the tapered trailing edges used today limit the size of the circulation zone and thus reduce the area of formation of coherent vortex structures. This prevents the formation of a Karman vortex street up to a critical point in the flow velocity. In particular under partial load conditions, however, flow conditions can occur in which such eddy streets are formed.
  • the inventors have recognized that irregularities in the shape of the leading and / or trailing edge stabilize the wake flow behind components in hydraulic flow machines, in which no coherent flow structures such as vortex braids can arise due to the structurally pre-shaped spatial variation of the trailing edge. Irregularities in the shape of the leading edge influence the boundary layer along the entire course up to to the trailing edge and also dampen the formation of large swirl structures. For the design of the irregularities in the shape of the leading and / or trailing edge, wave-like changes are particularly suitable.
  • the merging of the leading and / or trailing edge which is varied in a wave-like manner, has a positive influence on the merging of the top and bottom flow at different speeds, since the boundary region between these two flow regions is stabilized in the wake by a disturbance predefined on the varied edge.
  • the wavy variations near the edges are small with regard to the dimensions of the leading and / or trailing edge. However, they are larger than the roughness and waviness caused by the machining and are adjusted to the flow and dimensional conditions as a target.
  • the thickness variations near the edge are extended to the leading and / or trailing edge in such a way that they lead to a wavy length variation at the edge.
  • This shape is particularly advantageous in production, since these variations can be applied to the leading and / or trailing edge by milling in a subsequent processing step.
  • Figure 1 wing of a Kaplan turbine with an irregular trailing edge
  • Figure 3 impeller blade of a Francis turbine with an irregular leading and trailing edge
  • FIG. 7 shows a geometric irregularity in the form of a block function
  • Figure 8 shows a geometric irregularity in the form of a sawtooth structure
  • Figure 15 shows a nozzle with a needle on a Pelton turbine in longitudinal section
  • Figure 16 shows the subject of Figure 15 in a perspective view
  • Figure 17 shows the object of Figure 15 in a front view
  • Figure 18 shows the subject of Figure 15 a sectional view according to the
  • Figure 19 shows a suction pipe of a Francis turbine in a longitudinal section
  • Figure 20 shows the upper part of the object of Figure 19 in perspective
  • Figure 21 shows the object of Figure 19 in plan view
  • Figure 22 segments of a Pelton wheel.
  • Blades e.g. B. Francis turbines
  • FIG. 1 shows a top view of the wing of a Kaplan turbine as an example of a flow-around element in a hydraulic fluid machine.
  • FIG. 1 shows a top view of the wing of a Kaplan turbine as an example of a flow-around element in a hydraulic fluid machine.
  • the open space form are shown in a highly simplified manner.
  • On the right is the inlet area of the flow and thus the leading edge, on the left the outlet of the flow and the trailing edge.
  • the irregularity in the shape of the trailing edge is shown schematically simplified.
  • the dashed line marks the middle course of this trailing edge.
  • the design of the trailing edge in this exemplary embodiment varies in waves in this course.
  • the blade shown in Figure 2 is the blade through a Francis turbine in a meridian section.
  • the trailing edge on the pressure side shows several discrepancies. These discontinuities extend over the entire course of the trailing edge of the blade.
  • the blade of a Francis turbine shown in Figure 3 also has irregularities, namely along the leading edge and the trailing edge.
  • the irregularities are only planned locally.
  • the variations in their periodicity can change, which is exemplarily outlined along the trailing edge.
  • the leading edge describes an elongated sine line with two turning points.
  • FIGS. 5a, 5b and 5c illustrate the geometric irregularity at the edge region of a component of any type which influences the flow. This can be, for example, the edge profile in a Francis turbine - see the meridian view shown in FIG. 2. It can also be a matter of variations in the thickness curve or the length curve.
  • the irregularity is an undamped harmonic vibration.
  • the irregularities can take the form of a sine curve. Attenuated frequencies are also possible.
  • the tops of the amplitudes are cut off.
  • Figures 6a, 6b and 6c also show numerous variants. Note the turning points in Figure 6a and Figure 6b. Note also the tangent discontinuities in Figure 6b.
  • the irregularity shown in Figure 7 is trapezoidal.
  • FIG. 8 illustrates geometric irregularities in the form of a sawtooth profile.
  • FIGS. 9, 10 and 11 show the course of the thickness of a blade edge. This can be the leading or trailing edge of a hydraulic profile, i. H. a flow-influencing component such as the blade of a Francis impeller.
  • FIG. 10 illustrates an irregularity in which material is removed on both sides of the flow surfaces, in the present case symmetrically.
  • Figures 12 to 14 illustrate variations of possible geometric irregularities.
  • FIGS. 15 to 18 the design of the nozzle opening of a Pelton turbine is important. In the state of the art, this is rotationally symmetrical today. According to the invention, it deviates from the rotationally symmetrical shape. In the present case, it is approximately hexagonal. Oval, two, three, four, five or polygonal shapes are also possible and can be useful.
  • Figures 19 to 21 relate to a suction pipe and thus to a stationary component, which, however, strongly influences the flow.
  • the segments of a Pelton wheel shown in FIG. 22 show a length variation of the trailing edge.
  • the trailing edge has four turning points. Compared to the conventional design, material is removed at the trailing edge, so that the trailing edge in the embodiment now shown is below the radial line.

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

Abstract

La présente invention concerne une machine à écoulement hydraulique caractérisée en ce qu'elle comprend une roue mobile présentant une pluralité d'aubes mobiles, ainsi que d'autres composants exerçant une influence sur l'écoulement, qui présentent des arêtes d'entrée et des arêtes de sortie. Selon cette invention, la zone des arêtes d'entrée et/ou la zone des arêtes de sortie présente(nt) des irrégularités géométriques qui influencent localement la vitesse d'écoulement.
PCT/EP2003/002373 2002-03-09 2003-03-07 Dispositif de stabilisation d'ecoulement pour machines a ecoulement hydraulique Ceased WO2003076797A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10210426A DE10210426A1 (de) 2002-03-09 2002-03-09 Vorrichtung zur Strömungsstabilisierung in hydraulischen Strömungsmaschinen
DE10210426.3 2002-03-09

Publications (1)

Publication Number Publication Date
WO2003076797A1 true WO2003076797A1 (fr) 2003-09-18

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PCT/EP2003/002373 Ceased WO2003076797A1 (fr) 2002-03-09 2003-03-07 Dispositif de stabilisation d'ecoulement pour machines a ecoulement hydraulique

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DE (1) DE10210426A1 (fr)
WO (1) WO2003076797A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1712782A3 (fr) * 2005-04-07 2011-04-27 General Electric Canada Rainures de décharge de contraintes pour les aubes d'une turbine Francis
WO2013130163A1 (fr) * 2011-12-22 2013-09-06 General Electric Company Profils aérodynamiques et procédé de fabrication correspondant
CN103649524A (zh) * 2011-04-20 2014-03-19 阿尔斯通再生能源技术公司 用于水力机械的转轮、配备有该转轮的水力机械以及包括该水力机械的能量转换装置
CN116745517A (zh) * 2021-01-21 2023-09-12 福伊特专利有限公司 混流式液压机械
EP4464887A1 (fr) * 2023-05-17 2024-11-20 GE Renewable Technologies Pièce de turbine hydraulique d'une turbine comprenant un bord de fuite modifié

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Publication number Priority date Publication date Assignee Title
DE102005021058A1 (de) * 2005-05-06 2006-11-09 Mtu Aero Engines Gmbh Gasturbine, insbesondere Flugtriebwerk
DE102006043462A1 (de) * 2006-09-15 2008-03-27 Deutsches Zentrum für Luft- und Raumfahrt e.V. Aerodynamisches Bauteil mit einer gewellten Hinterkante
DE102006058415A1 (de) * 2006-12-12 2008-06-19 Deutsches Zentrum für Luft- und Raumfahrt e.V. Strömungsmaschine
AT525670B1 (de) * 2022-06-07 2023-06-15 Andritz Hydro Gmbh Schaufel einer Peltonturbine

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US1504710A (en) * 1922-04-01 1924-08-12 Allis Chalmers Mfg Co Rotor
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US2238749A (en) * 1939-01-30 1941-04-15 Clarence B Swift Fan blade
GB791563A (en) * 1955-05-02 1958-03-05 Joseph Vaghi Improvements relating to structures for use as an airplane wing, a propeller blade, a blower or fan blade
US4089618A (en) * 1974-07-02 1978-05-16 Rotron Incorporated Fan with noise reduction
GB2105791A (en) * 1981-09-22 1983-03-30 Gebhardt Gmbh Wilhelm >Centrifugal fan
US4720239A (en) * 1982-10-22 1988-01-19 Owczarek Jerzy A Stator blades of turbomachines
EP0273851A2 (fr) * 1986-12-29 1988-07-06 United Technologies Corporation Aube de turbine à gaz
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US5088665A (en) * 1989-10-31 1992-02-18 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Serrated trailing edges for improving lift and drag characteristics of lifting surfaces
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EP0884130A2 (fr) * 1997-06-14 1998-12-16 Voith Hydro GmbH & Co. KG Elements pour turbomachines

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