WO2006053356A1 - Fly wheel for wind turbines - Google Patents

Fly wheel for wind turbines Download PDF

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Publication number
WO2006053356A1
WO2006053356A1 PCT/AT2005/000442 AT2005000442W WO2006053356A1 WO 2006053356 A1 WO2006053356 A1 WO 2006053356A1 AT 2005000442 W AT2005000442 W AT 2005000442W WO 2006053356 A1 WO2006053356 A1 WO 2006053356A1
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WO
WIPO (PCT)
Prior art keywords
flywheel
rotor
recess
periphery
wind power
Prior art date
Application number
PCT/AT2005/000442
Other languages
German (de)
French (fr)
Inventor
Johannes Markopulos
Original Assignee
Johannes Markopulos
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 Johannes Markopulos filed Critical Johannes Markopulos
Publication of WO2006053356A1 publication Critical patent/WO2006053356A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/30—Flywheels
    • F16F15/31—Flywheels characterised by means for varying the moment of inertia
    • 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
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10—Combinations of wind motors with apparatus storing energy
    • F03D9/12—Combinations of wind motors with apparatus storing energy storing kinetic energy, e.g. using flywheels
    • 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
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/005—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  the axis being vertical
    • 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
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • 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
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/10—Combinations of wind motors with apparatus storing energy
    • F03D9/13—Combinations of wind motors with apparatus storing energy storing gravitational potential energy
    • F03D9/14—Combinations of wind motors with apparatus storing energy storing gravitational potential energy using liquids
    • 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
    • F05B2240/10—Stators
    • F05B2240/13—Stators to collect or cause flow towards or away from turbines
    • 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
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • 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
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • F05B2240/217—Rotors for wind turbines with vertical axis of the crossflow- or "Banki"- or "double action" type
    • 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
    • F05B2250/20—Geometry three-dimensional
    • F05B2250/24—Geometry three-dimensional ellipsoidal
    • 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
    • F05B2260/00—Function
    • F05B2260/42—Storage of energy
    • F05B2260/421—Storage of energy in the form of rotational kinetic energy, e.g. in flywheels
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
    • 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
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin

Definitions

  • the present invention relates to a flywheel for wind power plants, which is filled with a liquid which can flow due to the centrifugal force from the center to the periphery of the flywheel, wherein the flywheel form a flat Tel ⁇ lers with a recess in the center and an upwardly umge ⁇ has curved edge on the circumference.
  • Such flywheels are e.g. from JP 61-149647 A or JP 59-1838 A known. At rest, the fluid is in the center of the flywheel. As a result, the rotational mass of the flywheel is low and it prevents slow startup of the rotor. In operation, the liquid flows due to the centrifugal force to the circumference of the flywheel, which increases the rotational inertial mass. The flywheel can thereby store more rotational energy and compensate for fluctuations in the revolutions of the rotor better.
  • the known flywheel designs have a central container for the liquid, emanating from the hollow spokes to a circumferential hollow ring. This construction is complicated on the one hand and on the other hand requires continuous checking of the filling level and refilling of the liquid in order to ensure the flywheel effect in continuous operation.
  • the invention has for its object to provide a flywheel of the type mentioned, which is particularly simple and allows a maintenance-free continuous use.
  • the flywheel is at least partially exposed at its top to the outside to collect rainwater.
  • the invention is based on the concept of an automatic refilling and level control of the flywheel by means of rainwater, which is collected by its exposed plate-shaped upper side and collected in the recess. Excess rainwater flows out through the upper edge of the rim as it rotates and any water that is caught is trapped Rainwater replaced.
  • the flywheel is thus particularly suitable for use in wind power plants, which are exposed to the natural elements.
  • a preferred embodiment of the invention is characterized in that the depression is trough-shaped with sloping flanks.
  • the flanks prevent frost damage due to freezing water in winter, as they cause the glider to slide up
  • the edge is provided on its inside with an elastic element, preferably an air-filled hose, in order to prevent frost damage during rotary operation.
  • the recess has a closable Abllust ⁇ opening to allow emptying of the flywheel for repair and cleaning purposes.
  • a further advantageous embodiment of the flywheel which is intended for a wind power plant with a rotor with a vertical shaft, is characterized in that the flywheel sits on the shaft of the rotor, preferably below the rotor.
  • the flywheel sits on the shaft of the rotor, preferably below the rotor.
  • FIG. 1 shows a wind power plant with a rotor and a flywheel according to the invention in a schematic seean ⁇ view
  • Fig. 2 shows the flywheel of the wind power plant of Fig. 1 in axial section
  • FIG. 3 shows a detail of the flywheel of FIG. 2.
  • a wind power plant 1 has a blade rotor 2 with a vertical shaft 3 which drives a generator 4, 5 and is correspondingly rotatably mounted on the bottom 6.
  • the generator 4, 5 comprises a friction wheel 4 driven by the shaft 3, which drives numerous individual generators 5 on its circumference.
  • the blade rotor 2 is designed for a radial flow from the inside to the outside and is fed by a cowl 7, which in turn is rotatably mounted on the shaft 3 and aligned by means of a tail 8 to the wind, so that its inlet port 9 receives the wind and deflects toward the blade rotor 2.
  • the blade rotor 2 is provided on its upper side with a Ab ⁇ cover shell 10 and on its underside with a flywheel 11, which is shown in more detail in Figs. 2 and 3.
  • the flywheel 11 is in the form of a flat plate 12 having a recess 13 in the center and an upturned rim 14 at its periphery.
  • the depression 13 is trough-shaped with sloping flanks and is filled with water at rest up to a level 15 (FIG. 1).
  • the water flows radially outward into the region 16 within the bent rim 14.
  • it flows radially outwardly beyond the edge 17 of the bent edge 14, so that during turning operation a "water ring" is present in the region 16 of the bent-over rim 14, which increases the rotational mass of the inertia of the flywheel 11.
  • the edge 14 is provided on its inside with an elastic element 18, preferably an air-filled hose.
  • the top of the plate 12 is at least partially exposed, u.zw. in the example shown in a region 19 which is not covered by the wind hood 7;
  • the upper ⁇ bdeckschale 10 is broken over the area 19.
  • rainwater is collected from the upper side of the plate 11 in order to counteract the evaporation of the water or to compensate for it.
  • the depression 13 may have a closable discharge opening 20 at its lowest point in order to be able to drain the water for cleaning and maintenance purposes. Furthermore, a closable filling opening 21 can be seen above the depression 13, in order, for example, to be able to carry out a first filling of the flywheel 11 or refills, if the precipitation is not sufficient.

Abstract

The invention relates to a fly wheel (11) for wind turbines (1), said wheel being filled with a liquid that can flow from the centre to the periphery of the fly wheel (11) as a result of centrifugal force. The fly wheel (11) is configured as a flat disc (12) with a depression (13) in the centre and an upturned edge (14) at its periphery and is characterised in that its upper face is at least partially exposed (19) to the elements in order to collect rainwater.

Description

Schwungrad für Windkraftwerke Flywheel for wind power plants
Die vorliegende Erfindung betrifft ein Schwungrad für Windkraftwerke, welches mit einer Flüssigkeit gefüllt ist, die aufgrund der Fliehkraft vom Zentrum zum Umfang des Schwungrades strömen kann, wobei das Schwungrad die Form eines flachen Tel¬ lers mit einer Vertiefung im Zentrum und einem nach oben umge¬ bogenen Rand am Umfang hat.The present invention relates to a flywheel for wind power plants, which is filled with a liquid which can flow due to the centrifugal force from the center to the periphery of the flywheel, wherein the flywheel form a flat Tel¬ lers with a recess in the center and an upwardly umge¬ has curved edge on the circumference.
Derartige Schwungräder sind z.B. aus der JP 61-149647 A oder der JP 59-1838 A bekannt. Im Ruhezustand befindet sich die Flüssigkeit im Zentrum des Schwungrades. Die Rotationsträg- heitsmasse des Schwungrades ist dadurch gering und es setzt dem Anlaufen des Rotors wenig Trägheit entgegen. Im Betrieb strömt die Flüssigkeit aufgrund der Fliehkraft zum Umfang des Schwung- rades, was die Rotationsträgheitsmasse erhöht. Das Schwungrad kann dadurch mehr Rotationsenergie speichern und Schwankungen der Umdrehungen des Rotors besser ausgleichen.Such flywheels are e.g. from JP 61-149647 A or JP 59-1838 A known. At rest, the fluid is in the center of the flywheel. As a result, the rotational mass of the flywheel is low and it prevents slow startup of the rotor. In operation, the liquid flows due to the centrifugal force to the circumference of the flywheel, which increases the rotational inertial mass. The flywheel can thereby store more rotational energy and compensate for fluctuations in the revolutions of the rotor better.
Die bekannten Schwungradkonstruktionen verfügen über einen zentralen Behälter für die Flüssigkeit, von dem Hohlspeichen zu einem umlaufenden Hohlring ausgehen. Diese Konstruktion ist ei¬ nerseits aufwendig und erfordert anderseits eine ständige Kon¬ trolle des Füllstandes und ein Nachfüllen der Flüssigkeit, um die Schwungradwirkung im Dauerbetrieb zu gewährleisten.The known flywheel designs have a central container for the liquid, emanating from the hollow spokes to a circumferential hollow ring. This construction is complicated on the one hand and on the other hand requires continuous checking of the filling level and refilling of the liquid in order to ensure the flywheel effect in continuous operation.
Die Erfindung setzt sich zum Ziel, ein Schwungrad der ge- nannten Art zu schaffen, welches besonders einfach aufgebaut ist und einen wartungsfreien Dauereinsatz ermöglicht.The invention has for its object to provide a flywheel of the type mentioned, which is particularly simple and allows a maintenance-free continuous use.
Dieses Ziel wird erfindungsgemäß dadurch erreicht, daß das Schwungrad zumindest teilweise an seiner Oberseite gegenüber dem Freien zum Auffangen von Regenwasser freiliegt. Die Erfindung beruht auf dem Konzept einer selbsttätigen Nachfüllung und Füllstandsregulierung des Schwungrades mittels Regenwassers, das von seiner freiliegenden tellerförmigen Ober¬ seite aufgefangen und in der Vertiefung gesammelt wird. Über¬ schüssiges Regenwasser strömt bei der Drehung über die Oberkan- te des Randes ab und fehlendes Wasser wird durch aufgefangenes Regenwasser ersetzt. Das Schwungrad ist damit für einen Einsatz in Windkraftwerken, welche den Naturelementen ausgesetzt sind, besonders geeignet.This object is inventively achieved in that the flywheel is at least partially exposed at its top to the outside to collect rainwater. The invention is based on the concept of an automatic refilling and level control of the flywheel by means of rainwater, which is collected by its exposed plate-shaped upper side and collected in the recess. Excess rainwater flows out through the upper edge of the rim as it rotates and any water that is caught is trapped Rainwater replaced. The flywheel is thus particularly suitable for use in wind power plants, which are exposed to the natural elements.
Eine bevorzugte Ausführungsform der Erfindung zeichnet sich dadurch aus, daß die Vertiefung muldenförmig mit schräg abfallenden Flanken ist. Die Flanken verhindern Frostschäden durch gefrierendes Wasser im Winter, da sie ein Hochgleiten derA preferred embodiment of the invention is characterized in that the depression is trough-shaped with sloping flanks. The flanks prevent frost damage due to freezing water in winter, as they cause the glider to slide up
Eisschicht ermöglichen.Allow ice layer.
Zu demselben Zweck ist es besonders vorteilhaft, wenn der Rand an seiner Innenseite mit einem elastischen Element verse¬ hen ist, bevorzugt einem luftgefüllten Schlauch, um Frostschä¬ den im Drehbetrieb zu verhindern.For the same purpose, it is particularly advantageous if the edge is provided on its inside with an elastic element, preferably an air-filled hose, in order to prevent frost damage during rotary operation.
Bevorzugt weist die Vertiefung eine verschließbare Abla߬ öffnung auf, um eine Entleerung des Schwungrades zu Reparatur- und Reinigungszwecken zu ermöglichen.Preferably, the recess has a closable Abla߬ opening to allow emptying of the flywheel for repair and cleaning purposes.
Eine weitere vorteilhafte Ausführungsform des Schwungra¬ des, die für ein Windkraftwerk mit einem Rotor mit vertikaler Welle bestimmt ist, zeichnet sich dadurch aus, daß das Schwung¬ rad auf der Welle des Rotors sitzt, bevorzugt unterhalb des Ro- tors. Auf diese Weise kann eine einfache, kompakte Einheit aus Rotor und Schwungrad geschaffen werden; der Rotor wird hierbei entweder tangential oder über eine entsprechende Windhutze axi¬ al angeströmt.A further advantageous embodiment of the flywheel, which is intended for a wind power plant with a rotor with a vertical shaft, is characterized in that the flywheel sits on the shaft of the rotor, preferably below the rotor. In this way, a simple, compact unit of rotor and flywheel can be created; In this case, the rotor is flowed either tangentially or axi¬ al via a corresponding Windhutze.
Die Erfindung wird nachstehend anhand eines in den Zeich- nungen dargestellten Ausführungsbeispieles näher erläutert. In den Zeichnungen zeigtThe invention will be explained in more detail below with reference to an embodiment shown in the drawings. In the drawings shows
Fig. 1 ein Windkraftwerk mit einem Rotor und einem Schwungrad gemäß der Erfindung in einer schematischen Seitenan¬ sicht, Fig. 2 das Schwungrad des Windkraftwerkes von Fig. 1 im Axialschnitt und1 shows a wind power plant with a rotor and a flywheel according to the invention in a schematic Seitenan¬ view, Fig. 2 shows the flywheel of the wind power plant of Fig. 1 in axial section and
Fig. 3 ein Detail des Schwungrades von Fig. 2. Gemäß Fig. 1 weist ein Windkraftwerk 1 einen Schaufelrotor 2 mit einer vertikalen Welle 3 auf, die einen Generator 4, 5 antreibt und am Boden 6 entsprechend drehgelagert ist. Der Ge- nerator 4, 5 umfaßt ein von der Welle 3 angetriebenes Reibrad 4, welches an seinem Umfang zahlreiche Einzelgeneratoren 5 an¬ treibt.FIG. 3 shows a detail of the flywheel of FIG. 2. According to FIG. 1, a wind power plant 1 has a blade rotor 2 with a vertical shaft 3 which drives a generator 4, 5 and is correspondingly rotatably mounted on the bottom 6. The The generator 4, 5 comprises a friction wheel 4 driven by the shaft 3, which drives numerous individual generators 5 on its circumference.
Der Schaufelrotor 2 ist für eine radiale Durchströmung von innen nach außen ausgebildet und wird von einer Windhutze 7 ge¬ speist, die ihrerseits auf der Welle 3 drehgelagert ist und sich mittels eines Leitwerks 8 zum Wind hin ausrichtet, so daß ihre Einlaßöffnung 9 den Wind empfängt und zum Schaufelrotor 2 hin umlenkt. Der Schaufelrotor 2 ist an seiner Oberseite mit einer Ab¬ deckschale 10 und an seiner Unterseite mit einem Schwungrad 11 versehen, welches ausführlicher in den Fig. 2 und 3 gezeigt ist.The blade rotor 2 is designed for a radial flow from the inside to the outside and is fed by a cowl 7, which in turn is rotatably mounted on the shaft 3 and aligned by means of a tail 8 to the wind, so that its inlet port 9 receives the wind and deflects toward the blade rotor 2. The blade rotor 2 is provided on its upper side with a Ab¬ cover shell 10 and on its underside with a flywheel 11, which is shown in more detail in Figs. 2 and 3.
Gemäß den Fig. 2 und 3 hat das Schwungrad 11 die Form ei- nes flachen Tellers 12 mit einer Vertiefung 13 im Zentrum und einem nach oben umgebogenen Rand 14 an seinem Umfang. Die Ver¬ tiefung 13 ist muldenförmig mit schräg abfallenden Flanken und wird im Ruhezustand mit Wasser bis zu einem Niveau 15 (Fig. 1) gefüllt. Im Betrieb strömt das Wasser aufgrund der Fliehkraft radial nach außen bis in den Bereich 16 innerhalb des umgeboge¬ nen Randes 14. Sollte zuviel Wasser im Schwungrad 11 sein, fließt es über die Kante 17 des umgebogenen Randes 14 radial nach außen ab, sodaß im Drehbetrieb ein „Wasserring" im Bereich 16 des umgebogenen Randes 14 vorliegt, der die Rotationsträg- heitsmasse des Schwungrades 11 erhöht.Referring to FIGS. 2 and 3, the flywheel 11 is in the form of a flat plate 12 having a recess 13 in the center and an upturned rim 14 at its periphery. The depression 13 is trough-shaped with sloping flanks and is filled with water at rest up to a level 15 (FIG. 1). During operation, due to the centrifugal force, the water flows radially outward into the region 16 within the bent rim 14. Should too much water be in the flywheel 11, it flows radially outwardly beyond the edge 17 of the bent edge 14, so that during turning operation a "water ring" is present in the region 16 of the bent-over rim 14, which increases the rotational mass of the inertia of the flywheel 11.
Der Rand 14 ist an seiner Innenseite mit einem elastischen Element 18 versehen, bevorzugt einem luftgefüllten Schlauch.The edge 14 is provided on its inside with an elastic element 18, preferably an air-filled hose.
Die Oberseite des Tellers 12 liegt zumindest teilweise frei, u.zw. im gezeigten Beispiel in einem Bereich 19, welcher nicht von der Windhutze 7 überdeckt ist; zu diesem Zweck ist die obere Äbdeckschale 10 über dem Bereich 19 durchbrochen. Da¬ durch wird Regenwasser von der Oberseite des Tellers 11 aufge¬ fangen, um d'er Verdunstung des Wassers entgegenzuwirken bzw. diese zu kompensieren. Es versteht sich, daß bei anders gestal- teten Windkraftwerken mit anders angeordneten Rotoren auch grö- ßere Teile der Oberseite des Schwungrades 11 gegenüber dem Freien und der Witterung freiliegen können, um größere Mengen Regenwasser aufzufangen.The top of the plate 12 is at least partially exposed, u.zw. in the example shown in a region 19 which is not covered by the wind hood 7; For this purpose, the upper Äbdeckschale 10 is broken over the area 19. As a result, rainwater is collected from the upper side of the plate 11 in order to counteract the evaporation of the water or to compensate for it. It goes without saying that in differently designed wind power plants with differently arranged rotors also larger ßere parts of the top of the flywheel 11 can be exposed to the outdoors and the weather to collect larger amounts of rainwater.
Die Vertiefung 13 kann an ihrer untersten Stelle eine ver- schließbare Ablaßöffnung 20 aufweisen, um das Wasser zu Reini- gungs- und Wartungszwecken ablassen zu können. Ferner kann eine verschließbare Füllöffnung 21 oberhalb der Vertiefung 13 vorge¬ sehen werden, um beispielsweise eine Erstfüllung des Schwungra¬ des 11 oder Nachfüllungen, falls der Niederschlag nicht aus- reicht, durchführen zu können.The depression 13 may have a closable discharge opening 20 at its lowest point in order to be able to drain the water for cleaning and maintenance purposes. Furthermore, a closable filling opening 21 can be seen above the depression 13, in order, for example, to be able to carry out a first filling of the flywheel 11 or refills, if the precipitation is not sufficient.
Die Erfindung ist nicht auf die dargestellte Ausführungs¬ form beschränkt, sondern umfaßt alle Varianten und Modifikatio¬ nen, die in den Rahmen der angeschlossenen Ansprüche fallen. The invention is not limited to the illustrated embodiment, but includes all variants and modifications that fall within the scope of the attached claims.

Claims

Patentansprüche: claims:
1. Schwungrad (11) für Windkraftwerke (1), welches mit einer Flüssigkeit gefüllt ist, die aufgrund der Fliehkraft vom Zentrum zum Umfang des Schwungrades (11) strömen kann, wobei das Schwungrad (11) die Form eines flachen Tellers (12) mit ei¬ ner Vertiefung (13) im Zentrum und einem nach oben umgebogenen Rand (14) am Umfang hat, dadurch gekennzeichnet, daß das' Schwungrad (11) zumindest teilweise (19) an seiner Oberseite gegenüber dem Freien zum Auffangen von Regenwasser freiliegt.First flywheel (11) for wind power plants (1), which is filled with a liquid which can flow due to the centrifugal force from the center to the periphery of the flywheel (11), wherein the flywheel (11) has the shape of a flat plate (12) ei¬ ner recess (13) in the center and an upwardly bent edge (14) has on the periphery, characterized in that the ' flywheel (11) at least partially (19) on its upper side exposed to the outside for collecting rainwater.
2. Schwungrad (11) nach Anspruch 1, dadurch gekennzeich¬ net, daß die Vertiefung (13) muldenförmig mit schräg abfallen¬ den Flanken ist.Second flywheel (11) according to claim 1, characterized gekennzeich¬ net, that the recess (13) is trough-shaped with obliquely abfallen¬ the flanks.
3. Schwungrad (11) nach Anspruch 1 oder 2, dadurch ge- kennzeichnet, daß der Rand (14) an seiner Innenseite mit einem elastischen Element (18) versehen ist, bevorzugt einem luftge¬ füllten Schlauch.3. flywheel (11) according to claim 1 or 2, character- ized in that the edge (14) is provided on its inner side with an elastic element (18), preferably a luftge¬ filled hose.
4. Schwungrad (11) nach einem der Ansprüche 1 bis 3, da¬ durch gekennzeichnet, daß die Vertiefung (13) eine verschließ- bare Ablaßöffnung (20) aufweist.4. flywheel (11) according to one of claims 1 to 3, da¬ characterized in that the recess (13) has a closable drain opening (20).
5. Schwungrad (11) nach einem der Ansprüche 1 bis 4 für ein Windkraftwerk (1) mit einem Rotor (2) mit vertikaler Welle (3)> dadurch gekennzeichnet, daß das Schwungrad (11) auf der5. flywheel (11) according to one of claims 1 to 4 for a wind power plant (1) with a rotor (2) with a vertical shaft (3)> characterized in that the flywheel (11) on the
Welle (3) des Rotors (2) sitzt, bevorzugt unterhalb des Rotors (2) . Shaft (3) of the rotor (2) sits, preferably below the rotor (2).
PCT/AT2005/000442 2004-11-19 2005-11-08 Fly wheel for wind turbines WO2006053356A1 (en)

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Application Number Priority Date Filing Date Title
AT0194504A AT413742B (en) 2004-11-19 2004-11-19 FLYWHEEL FOR WIND POWER PLANTS
ATA1945/2004 2004-11-19

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WO2006053356A1 true WO2006053356A1 (en) 2006-05-26

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EP2128439A1 (en) 2008-05-27 2009-12-02 Syneola SA An intelligent decentralized electrical power generation system
US10788011B2 (en) 2018-10-31 2020-09-29 Loubert S. Suddaby Wave energy capture device and energy storage system utilizing a variable mass, variable radius concentric ring flywheel
US10837420B2 (en) 2018-10-31 2020-11-17 Loubert S. Suddaby Wave energy capture device and energy storage system utilizing a variable mass, variable radius concentric ring flywheel

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Publication number Priority date Publication date Assignee Title
EP2128439A1 (en) 2008-05-27 2009-12-02 Syneola SA An intelligent decentralized electrical power generation system
US10788011B2 (en) 2018-10-31 2020-09-29 Loubert S. Suddaby Wave energy capture device and energy storage system utilizing a variable mass, variable radius concentric ring flywheel
US10837420B2 (en) 2018-10-31 2020-11-17 Loubert S. Suddaby Wave energy capture device and energy storage system utilizing a variable mass, variable radius concentric ring flywheel

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