WO2002055884A1 - Rotor pour turbine a eau ou pompe a eau - Google Patents

Rotor pour turbine a eau ou pompe a eau Download PDF

Info

Publication number
WO2002055884A1
WO2002055884A1 PCT/EP2001/014630 EP0114630W WO02055884A1 WO 2002055884 A1 WO2002055884 A1 WO 2002055884A1 EP 0114630 W EP0114630 W EP 0114630W WO 02055884 A1 WO02055884 A1 WO 02055884A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
blades
main
impeller according
main blade
Prior art date
Application number
PCT/EP2001/014630
Other languages
German (de)
English (en)
Inventor
Thomas KÄCHELE
Original Assignee
Voith Siemens Hydro Power Generation Gmbh & 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 Siemens Hydro Power Generation Gmbh & Co. Kg filed Critical Voith Siemens Hydro Power Generation Gmbh & Co. Kg
Publication of WO2002055884A1 publication Critical patent/WO2002055884A1/fr

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
    • F03B3/04—Machines or engines of reaction type; Parts or details peculiar thereto with substantially axial flow throughout rotors, e.g. propeller turbines
    • F03B3/06—Machines or engines of reaction type; Parts or details peculiar thereto with substantially axial flow throughout rotors, e.g. propeller turbines with adjustable blades, e.g. Kaplan turbines
    • 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
    • F04D29/18—Rotors
    • F04D29/181—Axial flow rotors
    • 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
    • F05B2240/301—Cross-section characteristics
    • 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 the field of fluid-flow machines for use with liquids. It particularly affects Kaplan turbines.
  • the impellers of such turbines have a shaft and a number of blades which are carried by the shaft.
  • the blades can be rotated about axes of rotation which are arranged perpendicular to the longitudinal axis of the shaft.
  • An adjustment mechanism is assigned to the blades, which allows the blades to be pivoted about the relevant axis of rotation. The adjustment of the blades serves to optimize the efficiency of the turbine, across the entire working area.
  • the invention is therefore based on the object of specifying a method and a hydraulic machine with which the efficiencies in the work area can be improved.
  • At least some of the blades are designed as a double blade, comprising a main blade and a secondary blade.
  • the two blades are arranged essentially parallel to one another, so that a large area of each blade is opposite a large area of the other blade.
  • certain deviations from parallelism are conceivable.
  • the entrance area of a blade i.e. the area of the blade leading edge is normally subject to a high load.
  • the leading edge of a scoop creates cavitation and eddies occur. Optimal blade loading is not possible, and the application area of the turbomachine is restricted.
  • a double blade comprising one is used
  • the load per individual blade is reduced - i.e. the loading of the leading edge area of the main blade and the leading edge area of the secondary blade - compared to blades according to the prior art.
  • the load acting on the individual blade is distributed more or less evenly over the blade.
  • the risk of cavitation is reduced, as is the risk of eddies occurring in the area of the leading edge of each individual blade.
  • the secondary vane can thus be arranged on the pressure side or on the suction side of the main vane.
  • the two partial blades - main blade and secondary blade - can be attached to each other by means of webs.
  • the webs are expediently welded to the relevant surfaces of the blades.
  • the webs run best in the direction of flow. However, an inclination towards the direction of flow is also conceivable. Individual blade areas can thus be additionally loaded or relieved.
  • the two partial blades there is a distance between the two partial blades, so that the two partial blades form an intermediate space between them, through which liquid flows.
  • the distance will generally be almost constant over the entire area of the space. Generally it will be larger than the thickness of a partial blade.
  • Both blades i.e. Main blade and secondary blade can be the same size. They can even be congruent in a projection. However, this is not absolutely necessary.
  • the leading edge of the secondary blade as seen in the direction of rotation, can also lie in front of or behind the leading edge of the main blade.
  • the invention can be used in any type of fluid-operated flow machine.
  • the invention is particularly suitable for use in Kaplan turbines.
  • other types of turbines are also possible, such as, for example, propeller turbines, these are turbines in which the turbine blades cannot be adjusted.
  • the invention can be applied to Francis turbines and pump turbines and to water pumps in general.
  • Blade of a double blade can be moved relative to each other, preferably in the installed state.
  • the displacement can take place in such a way that the distance between the two partial blades is changed, or that the displacement takes place parallel to the large areas of the partial blades, so that, for example, the positions of the leading edges are changed relative to one another.
  • Figure 1 shows a water turbine with adjustable blades in elevation and partially in section.
  • Figure 2 shows the two blades of the main blade and the secondary blade, seen in plan view.
  • FIG. 3 shows the two shovel blades according to FIG. 2 in one
  • the machine shown in FIG. 1 is a
  • Kaplan turbine A rotor with a shaft 1 and a number of blades 2 can be seen.
  • the blades 2 are rotatably mounted on the shaft 1.
  • the axis 1.1 of the shaft 1 runs vertically.
  • the pivot axes of the blades 2 run perpendicular to it, thus horizontally.
  • a flow channel 3 can also be seen, through which water reaches the area of the blades 2.
  • Each blade 2 has two blades, namely a main blade and a secondary blade. For reasons of clarity in the drawing, however, this is not shown in detail here.
  • the main blade 2.2 shown in FIG. 2 has an entry edge 2.2.1 and an exit edge 2.2.2.
  • the secondary blade 2.3 has an entry edge 2.3.1 and an exit edge 2.3.2.
  • the secondary blade is attached to the main blade by means of one or more webs 2.4. The blades are adjusted via the pivot pin or blade root 2.5.
  • Secondary blade 2.3 recognizable. As can be seen, the leading edge 2.3.1 of the secondary blade 2.3 is offset from the leading edge 2.2.1 of the main blade 2.2. Seen in the direction of rotation of the impeller, the leading edge of the secondary blade 2.3 lies behind the leading edge of the main blade 2.2.
  • both partial blades - main blade and secondary blade 2.3 - are approximately the same thickness. However, this could also be different.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Hydraulic Turbines (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention concerne un rotor destiné à une machine hydraulique destinée à être utilisée avec des fluides, comprenant un arbre et une pluralité d'ailettes qui sont portées par l'arbre, les ailettes présentant une lame d'ailette et une emplanture d'ailette. Selon l'invention, au moins l'une des ailettes comprend une lame d'ailette principale et une lame d'ailette secondaire, la lame de l'ailette principale et la lame de l'ailette secondaire étant au moins approximativement parallèles et espacées séparées par une certaine distance, et les lames des ailettes principales et des ailettes secondaires étant reliées fixement entre elles.
PCT/EP2001/014630 2001-01-10 2001-12-12 Rotor pour turbine a eau ou pompe a eau WO2002055884A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10100983A DE10100983A1 (de) 2001-01-10 2001-01-10 Laufrad für eine Wasserturbine oder Wasserpumpe
DE10100983.6 2001-01-10

Publications (1)

Publication Number Publication Date
WO2002055884A1 true WO2002055884A1 (fr) 2002-07-18

Family

ID=7670243

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/014630 WO2002055884A1 (fr) 2001-01-10 2001-12-12 Rotor pour turbine a eau ou pompe a eau

Country Status (2)

Country Link
DE (1) DE10100983A1 (fr)
WO (1) WO2002055884A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1806505A1 (fr) * 2006-01-05 2007-07-11 Hitachi Plant Technologies, Ltd. Pompe axial
EP2107235A1 (fr) * 2008-04-02 2009-10-07 Lm Glasfiber A/S Pale d'éolienne dotée d'une surface portante auxiliaire
CN102072068A (zh) * 2011-02-28 2011-05-25 重庆云河水电股份有限公司 五叶片桨叶操作机构
CN102072067A (zh) * 2011-02-28 2011-05-25 重庆云河水电股份有限公司 四叶片桨叶操作机构
CN102430923A (zh) * 2011-09-30 2012-05-02 东方电气集团东方电机有限公司 水轮机转轮空中翻身方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012018066A1 (de) * 2012-09-13 2014-03-13 Voith Patent Gmbh Wasserturbine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE83050C (fr) * 1900-01-01
US1234070A (en) * 1911-10-21 1917-07-17 George Henry Nitschke Screw-propeller.
US2006339A (en) * 1933-01-10 1935-07-02 Voith Gmbh J M Hydraulic machine
DE19900960A1 (de) * 1998-02-27 2000-07-13 Josef Schleich Komplex von Bau- und Verfahrensweisen mit zugeordnetem Bauelementensatz für Wasserkrafterzeugung und Nutzung und zur Wasserbehandlung
DE19931035A1 (de) * 1999-07-06 2001-01-25 Rudolf Bannasch Rotor mit gespaltenem Rotorblatt

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1836860A (en) * 1921-01-29 1931-12-15 Moody Lewis Ferry Vane formation for rotary elements
US1553627A (en) * 1922-06-07 1925-09-15 Allis Chalmers Mfg Co Rotor
DE19803589A1 (de) * 1998-01-30 1999-08-12 Voith Hydro Gmbh & Co Kg Verfahren zum Herstellen eines Bauteiles einer Strömungsmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE83050C (fr) * 1900-01-01
US1234070A (en) * 1911-10-21 1917-07-17 George Henry Nitschke Screw-propeller.
US2006339A (en) * 1933-01-10 1935-07-02 Voith Gmbh J M Hydraulic machine
DE19900960A1 (de) * 1998-02-27 2000-07-13 Josef Schleich Komplex von Bau- und Verfahrensweisen mit zugeordnetem Bauelementensatz für Wasserkrafterzeugung und Nutzung und zur Wasserbehandlung
DE19931035A1 (de) * 1999-07-06 2001-01-25 Rudolf Bannasch Rotor mit gespaltenem Rotorblatt

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1806505A1 (fr) * 2006-01-05 2007-07-11 Hitachi Plant Technologies, Ltd. Pompe axial
US8092189B2 (en) 2006-01-05 2012-01-10 Hitachi Plant Technologies, Ltd. Axial flow pump
EP2107235A1 (fr) * 2008-04-02 2009-10-07 Lm Glasfiber A/S Pale d'éolienne dotée d'une surface portante auxiliaire
WO2009121927A1 (fr) * 2008-04-02 2009-10-08 Lm Glasfiber A/S Aube d’éolienne possédant un contour auxiliaire
CN102046965A (zh) * 2008-04-02 2011-05-04 Lm玻璃纤维制品有限公司 带有辅助翼面的风力涡轮机叶片
US8834130B2 (en) 2008-04-02 2014-09-16 Peter Fuglsang Wind turbine blade with an auxiliary airfoil
CN102072068A (zh) * 2011-02-28 2011-05-25 重庆云河水电股份有限公司 五叶片桨叶操作机构
CN102072067A (zh) * 2011-02-28 2011-05-25 重庆云河水电股份有限公司 四叶片桨叶操作机构
CN102072068B (zh) * 2011-02-28 2013-01-30 重庆云河水电股份有限公司 五叶片桨叶操作机构
CN102072067B (zh) * 2011-02-28 2013-08-14 重庆云河水电股份有限公司 四叶片桨叶操作机构
CN102430923A (zh) * 2011-09-30 2012-05-02 东方电气集团东方电机有限公司 水轮机转轮空中翻身方法

Also Published As

Publication number Publication date
DE10100983A1 (de) 2002-07-18

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