EP2100033A2 - Turbine plant for generating power from sea waves - Google Patents

Turbine plant for generating power from sea waves

Info

Publication number
EP2100033A2
EP2100033A2 EP07846866A EP07846866A EP2100033A2 EP 2100033 A2 EP2100033 A2 EP 2100033A2 EP 07846866 A EP07846866 A EP 07846866A EP 07846866 A EP07846866 A EP 07846866A EP 2100033 A2 EP2100033 A2 EP 2100033A2
Authority
EP
European Patent Office
Prior art keywords
turbine
turbine plant
rotor
chamber
rotor blades
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.)
Withdrawn
Application number
EP07846866A
Other languages
German (de)
French (fr)
Inventor
William Kenneth Tease
Janet Lees
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 Patent GmbH
Original Assignee
Voith Patent GmbH
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 Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2100033A2 publication Critical patent/EP2100033A2/en
Withdrawn legal-status Critical Current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
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
    • F03B13/141—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy with a static energy collector
    • F03B13/142—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy with a static energy collector which creates an oscillating water column
    • 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
    • F03B11/08—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 removing foreign matter, e.g. mud
    • 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
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
    • 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
    • F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
    • F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
    • F03B13/24—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy to produce a flow of air, e.g. to drive an air turbine
    • 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
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

Definitions

  • Turbine plant for the benefit of energy from ocean waves
  • the invention relates to a turbine plant for exploiting ocean waves and for converting the energy contained therein into electrical energy.
  • Such systems have become known, for example, from EP 0 000441 A1 and GB 2 250 321 A.
  • Systems of this type are constructed as follows: They comprise a chamber which is open at its lower end and with this open end immersed in the sea. At its upper end, it also has an opening. There is further provided a pipe which serves to guide an air flow.
  • the tube is connected with its one open end to the upper opening of the chamber. In the tube is an enclosed by this and coaxial with the tube arranged energy unit with a turbine rotor and possibly with a standing in driving connection with the rotor electrical generator.
  • the mirror of the sea water within the chamber constantly rises and falls according to the waves of the sea; the wave motion thus acts into the chamber. With each lifting of the water level, a displacement of the air quantum in the chamber is contained. The air is lifted while lifting the
  • Water level displaces and flows through the upper opening of the chamber and thus through the pipe in which the turbine is located.
  • the air flow drives the turbine, and thus also the electric generator, which as such generates electrical energy.
  • the invention has for its object to design and improve systems of the type mentioned in such a way that their efficiency is increased.
  • the inventors have recognized the following:
  • the solution according to the invention comprises several alternatives. Probably the simplest measure is a spraying device that sprays a jet of liquid medium onto the rotor blades, for example water. It is essential that the medium is able to dissolve the salt deposited on the surfaces of the rotor blades. Also seawater comes here into consideration. In any case, a continuous or discontinuous treatment is conceivable.
  • the invention can also be applied by directly utilizing the energy of the sea waves.
  • pumps into consideration which may be part of desalination plants.
  • the invention can also be applied to systems in which the mechanical energy is not converted into electrical energy, and which accordingly have no generator.
  • FIG. 1 shows a schematic perspective view
  • FIG. 2 shows the wave energy power plant according to FIG. 1 in one
  • Figure 3 shows a perspective view of a so-called Wells turbine as an energy generating unit.
  • Figure 4 shows a part of the article of Figure 3 in an enlarged view.
  • Figure 5 shows a part of the article of Figure 4 in an enlarged
  • Figure 6 shows a perspective view of a sheet of a
  • Figure 7 is a graph showing the efficiency improvement
  • the wave energy power plant shown in Figure 1 is located in a coastal area, preferably in a funnel-shaped bay, where there is a high energy concentration.
  • the bay communicates with the open sea.
  • the water is constantly in motion - see the waves 2. From the power plant is essentially only a chamber 1 to see.
  • the chamber is open at the bottom, as can be seen from FIG.
  • the waves 2 go to chamber 1. They cause the level in the chamber to rise and fall in a vertical direction between a lower and an upper level - see the two vertical arrows.
  • the trapped in the chamber 1 air When lifting the water level, the trapped in the chamber 1 air is displaced upwards. It flows along the curved arrow. It leaves the chamber 1 through the upper opening 3. To the upper opening 3, a channel 4 is connected. This contains a power generation unit 5.
  • the power generation unit 5 is preceded by a flap valve 6.
  • the construction of the 3 shows a tube turbine 5. This has a tube 5.1, which is flowed through during operation of the power plant of air, which is displaced from chamber 1.
  • the tube turbine is a turbine whose rotor always revolves in one and the same sense of rotation, regardless of the direction of the air flow. See GB-A-1 595 700.
  • the tube turbine 5 furthermore comprises two rotors 5.2, 5.3. These are arranged coaxially to the tube 5.1 and enclosed by this.
  • the two rotors 5.2, 5.3 work on a generator 5.4.
  • the two rotors 5.2, 5.3 are designed and arranged such that they always rotate in one and the same direction of rotation, regardless of which side of the air flow enters the tube 5.1. This is necessary or advantageous because the air flows inland when raising the water level in chamber 1, and when lowering the land away.
  • the generator 5.4 outputs electrical energy to a power grid, not shown here.
  • Figures 4 and 5 can be seen in an enlarged view of a spray nozzle 5.5, which is connected to a spray water line 5.6. See also Figure 5. On the spray water line 5.6 more spray nozzles are generally connected, which are directed so that the splashing or dripping or dripping rays hit the blades of the two rotors 5.2 and 5.3.
  • FIG. 6 shows the extent of the crystallized salts in the region of the inlet or outlet edges of turbine blades.
  • the deposits reach a considerable extent in the course of weeks or months, if their formation is not prevented by measures according to the invention.
  • the graph shown in FIG. 7 represents on the abscissa the ratio Fi between the velocity of the air impinging on a rotor blade and the rotational speed of the rotor.
  • the ordinate plots the efficiency ⁇ of the turbine.
  • the circles illustrate the efficiency ⁇ after the application of solution liquid to the turbine blades, and the squares the course of the efficiency without application of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

The invention relates to a turbine plant for generating power from sea waves. Said turbine plant comprises a chamber that has one respective opening at the lower and upper end thereof, and a pipe which is open at both ends for conducting an air flow. The lower end of the chamber is immersed in sea water while the opening of the upper end is connected to one of the ends of the pipe. The turbine plant further comprises a power unit which is enclosed by the pipe and is disposed coaxial thereto. A device is provided for cleaning the rotor blades of sediments or preventing sedimentation on the rotor blades.

Description

Turbinenanlage zum Nutzen von Energie aus Meereswellen Turbine plant for the benefit of energy from ocean waves
Die Erfindung betrifft eine Turbinenanlage zum Ausnutzen von Meereswellen und zum Umsetzen der darin enthaltenen Energie in elektrische Energie. Solche Anlagen sind beispielsweise aus EP 0 000441 A1 und GB 2 250 321 A bekannt geworden.The invention relates to a turbine plant for exploiting ocean waves and for converting the energy contained therein into electrical energy. Such systems have become known, for example, from EP 0 000441 A1 and GB 2 250 321 A.
Anlagen dieser Art sind wie folgt aufgebaut: Sie umfassen eine Kammer, die an ihrem unteren Ende offen ist und mit diesem offenen Ende in das Meer eintaucht. An ihrem oberen Ende hat sie ebenfalls eine Öffnung. Es ist ferner ein Rohr vorgesehen, das dem Führen einer Luftströmung dient. Das Rohr ist mit seinem einen offenen Ende an die obere Öffnung der Kammer angeschlossen. Im Rohr befindet sich eine von diesem umschlossene und koaxial zum Rohr angeordnete Energieeinheit mit einem Turbinenrotor sowie ggf. mit einem mit dem Rotor in Triebverbindung stehenden elektrischen Generator.Systems of this type are constructed as follows: They comprise a chamber which is open at its lower end and with this open end immersed in the sea. At its upper end, it also has an opening. There is further provided a pipe which serves to guide an air flow. The tube is connected with its one open end to the upper opening of the chamber. In the tube is an enclosed by this and coaxial with the tube arranged energy unit with a turbine rotor and possibly with a standing in driving connection with the rotor electrical generator.
Der Spiegel des Meerwassers innerhalb der Kammer hebt und senkt sich ständig zufolge der Wellen des Meeres; die Wellenbewegung wirkt somit in die Kammer hinein. Mit jedem Heben des Wasserspiegels ist ein Verdrängen des in der Kammer befindlichen Luftquantums enthalten. Die Luft wird beim Heben desThe mirror of the sea water within the chamber constantly rises and falls according to the waves of the sea; the wave motion thus acts into the chamber. With each lifting of the water level, a displacement of the air quantum in the chamber is contained. The air is lifted while lifting the
Wasserspiegels verdrängt und strömt durch die obere Öffnung der Kammer und somit auch durch das Rohr, in welchem sich die Turbine befindet. Der Luftstrom treibt die Turbine an, und damit auch den elektrischen Generator, der als solcher elektrische Energie erzeugt.Water level displaces and flows through the upper opening of the chamber and thus through the pipe in which the turbine is located. The air flow drives the turbine, and thus also the electric generator, which as such generates electrical energy.
Beim Absenken des Wasserspiegels in der Kammer findet derselbe Vorgang statt, nur dass der Luftstrom sich umkehrt. Es gibt mechanische Möglichkeiten, den Turbinenrotor in ein- und demselben Drehsinn umlaufen zu lassen, ungeachtet der Richtung des Luftstromes. Eine solche Möglichkeit ist beispielsweise in GB 1 595 700 B beschrieben. Die in den Weltmeeren enthaltene Wellenenergie ist unerschöpflich. Die mittlere Jahreswellenenergie liegt bei einer Tiefe von 10 m in der Größenordnung von 10 kW/m, und bei einer Tiefe von 40 m bei 50 kW/m. Das Problem liegt jedoch darin, die reichlich vorhandene Energie auf wirtschaftliche Weise auszunutzen, so dass die Kosten pro Kilowattstunde wettbewerbsfähig sind. Dies ist bei zahlreichenWhen lowering the water level in the chamber, the same process takes place, only that the air flow is reversed. There are mechanical possibilities for rotating the turbine rotor in one and the same direction of rotation, regardless of the direction of the air flow. Such a possibility is described, for example, in GB 1 595 700 B. The wave energy contained in the oceans is inexhaustible. The average annual wave energy is at a depth of 10 m in the order of 10 kW / m, and at a depth of 40 m at 50 kW / m. However, the problem is to exploit the abundant energy in an economical way so that the cost per kilowatt-hour is competitive. This is with numerous
Anlagen zum Umsetzen von erneuerbarer Energie, so wie sie in der Natur anfällt, in wirtschaftlich verwertbare Energie zu akzeptablen Kosten häufig nicht möglich. Die Wirtschaftlichkeit einer Anlage der beschriebenen Art hängt somit sehr stark vom Wirkungsgrad ab. Die Möglichkeiten der Einflussnahme sind beschränkt.Plants for the conversion of renewable energy, as obtained in nature, often not possible in economically usable energy at acceptable costs. The efficiency of a system of the type described thus depends very much on the efficiency. The possibilities of influencing are limited.
Der Erfindung liegt die Aufgabe zugrunde, Anlagen der eingangs genannten Art derart zu gestalten und zu verbessern, dass ihr Wirkungsgrad gesteigert wird.The invention has for its object to design and improve systems of the type mentioned in such a way that their efficiency is increased.
Diese Aufgabe wird durch die Merkmale der selbständigen Ansprüche gelöst.This object is solved by the features of the independent claims.
Die Erfinder haben folgendes erkannt:The inventors have recognized the following:
Bei Turbinenanlagen zum Umsetzen von Meeresenergie in elektrische Energie kommt es zu Ablagerungen von Partikeln aller Art auf den Flächen der Rotorblätter. Die Ablagerungen schlagen sich aus dem Luftstrom nieder, der durch das Turbinenrohr hindurchtritt. Dies ist auch dann der Fall, wenn die Luft kein Wasser in flüssiger Form enthält. Die Luft ist jedoch feuchtigkeitsbeladen und enthält auch Meeressalze. Hieraus bildet sich ein Niederschlag, der zunächst so fein ist, dass er mit dem bloßen Auge nicht erkannt wird, weshalb er auch bisher nicht aufgefallen ist. Dieser Niederschlag hat eine Rauigkeit, die den Luftstrom an der Grenzfläche zu den Rotorblättern abbremst oder zu einer Ablösung des Luftstromes führt, und damit zu einer Verringerung des Wirkungsgrades der Turbine und somit der Gesamtanlage führt. Die genannte Rauhigkeit kann auch auf organische Substanzen zurückzuführen sein, die im Laufe der Zeit an den Rotorblättern anwachsen. Demgemäß besteht die Lösung des Problemes darin, Maßnahmen zu treffen, um die Flächen der Rotorblätter frei zu halten von den genannten Niederschlägen und Ablagerungen, oder, falls sich solche bereits gebildet haben, diese zu entfernen.In turbine plants for converting ocean energy into electrical energy, deposits of particles of all kinds occur on the surfaces of the rotor blades. The deposits are deposited from the airflow passing through the turbine pipe. This is the case even if the air contains no water in liquid form. However, the air is moisture laden and also contains sea salts. This results in a precipitate, which is initially so fine that it is not recognized by the naked eye, which is why he has not noticed so far. This precipitate has a roughness, which slows down the air flow at the interface with the rotor blades or leads to a separation of the air flow, and thus leads to a reduction in the efficiency of the turbine and thus the overall system. The roughness mentioned may also be due to organic substances which grow on the rotor blades over time. Accordingly, the solution to the problem is to take measures to keep the surfaces of the rotor blades clear of the said precipitates and deposits, or, if they have already formed, to remove them.
Die erfindungsgemäße Lösung umfasst mehrere Alternativen. Als wohl einfachste Maßnahme bietet sich eine Sprüheinrichtung an, die auf die Rotorblätter einen Strahl eines flüssigen Mediums spritzt, beispielsweise Wasser. Wesentlich ist, dass das Medium in der Lage ist, das auf den Oberflächen der Rotorblätter niedergeschlagene Salz zu lösen. Auch Seewasser kommt hierbei in Betracht. In jedem Falle ist eine kontinuierliche oder diskontinuierliche Behandlung denkbar.The solution according to the invention comprises several alternatives. Probably the simplest measure is a spraying device that sprays a jet of liquid medium onto the rotor blades, for example water. It is essential that the medium is able to dissolve the salt deposited on the surfaces of the rotor blades. Also seawater comes here into consideration. In any case, a continuous or discontinuous treatment is conceivable.
Statt einer Flüssigkeit kommt auch in Betracht, die Rotorblätter mit einem feinen Sprühnebel zu beaufschlagen, oder zu bedampfen.Instead of a liquid is also possible to apply the rotor blades with a fine spray, or to steam.
In der Praxis haben sich bedeutende Erfolge eingestellt. So konnte derIn practice, significant successes have been achieved. So could the
Wirkungsgrad durch ein Waschen der Blätter erheblich gesteigert werden.Efficiency can be significantly increased by washing the leaves.
Die Erfindung lässt sich auch anwenden bei unmittelbarer Ausnutzung der Energie der Meereswellen. Hier kommen beispielsweise Pumpen in Betracht, die Bestandteil von Wasserentsalzungsanlagen sein können. Jedenfalls lässt sich die Erfindung auch anwenden bei Anlagen, bei denen die mechanische Energie nicht in elektrische Energie umgesetzt wird, und die demgemäss keinen Generator aufweisen.The invention can also be applied by directly utilizing the energy of the sea waves. Here are, for example, pumps into consideration, which may be part of desalination plants. In any case, the invention can also be applied to systems in which the mechanical energy is not converted into electrical energy, and which accordingly have no generator.
Die Erfindung ist anhand der Zeichnung näher erläutert. Darin ist im einzelnen folgendes dargestellt:The invention is explained in more detail with reference to the drawing. The following is shown in detail:
Figur 1 zeigt in einer schematischen perspektivischen Ansicht einFIG. 1 shows a schematic perspective view
Wellenenergiekraftwerk.Wave energy power plant.
Figur 2 zeigt das Wellenenergiekraftwerk gemäß Figur 1 in einemFIG. 2 shows the wave energy power plant according to FIG. 1 in one
Vertikalschnitt. Figur 3 zeigt in perspektivischer Darstellung eine sogenannte Wells-Turbine als energieerzeugende Einheit.Vertical section. Figure 3 shows a perspective view of a so-called Wells turbine as an energy generating unit.
Figur 4 zeigt einen Teil des Gegenstandes von Figur 3 in vergrößerter Darstellung.Figure 4 shows a part of the article of Figure 3 in an enlarged view.
Figur 5 zeigt einen Teil des Gegenstandes von Figur 4 in vergrößerterFigure 5 shows a part of the article of Figure 4 in an enlarged
Darstellung.Presentation.
Figur 6 zeigt in perspektivischer Darstellung eine Ansicht eines Blattes einerFigure 6 shows a perspective view of a sheet of a
Turbine mit Ablagerungen im Kantenbereich des Blattes.Turbine with deposits in the edge area of the blade.
Figur 7 ist ein Diagramm, das die WirkungsgradverbesserungFigure 7 is a graph showing the efficiency improvement
(vorher/nachher) über dem Verhältnis zwischen der axialen Strömungsgeschwindigkeit und der tangentialen Geschwindigkeit.(before / after) over the ratio between the axial flow velocity and the tangential velocity.
Das in Figur 1 gezeigte Wellenenergiekraftwerk befindet sich in einem Küstenbereich, am besten in einer trichterförmigen Bucht, in denen eine hohe Energiekonzentration herrscht. Die Bucht steht mit der offenen See in Verbindung. Das Wasser befindet sich ständig in Bewegung - siehe die Wellen 2. Vom Kraftwerk ist im wesentlichen nur eine Kammer 1 zu sehen.The wave energy power plant shown in Figure 1 is located in a coastal area, preferably in a funnel-shaped bay, where there is a high energy concentration. The bay communicates with the open sea. The water is constantly in motion - see the waves 2. From the power plant is essentially only a chamber 1 to see.
Die Kammer ist unten offen, wie man aus Figur 2 erkennt. Die Wellen 2 gelangen zur Kammer 1. Sie führen dazu, dass sich der Pegel in der Kammer in vertikaler Richtung zwischen einem unteren und einem oberen Pegel hebt und senkt - siehe die beiden vertikalen Pfeile.The chamber is open at the bottom, as can be seen from FIG. The waves 2 go to chamber 1. They cause the level in the chamber to rise and fall in a vertical direction between a lower and an upper level - see the two vertical arrows.
Beim Anheben des Wasserspiegels wird die in der Kammer 1 eingeschlossene Luft nach oben verdrängt. Sie strömt entlang dem gekrümmten Pfeil. Sie verlässt die Kammer 1 durch die obere Öffnung 3. An die obere Öffnung 3 ist ein Kanal 4 angeschlossen. Dieser enthält eine Energieerzeugungseinheit 5. Der Energieerzeugungseinheit 5 ist ein Klappenventil 6 vorgeschaltet. Der Aufbau der Energieerzeugungseinheit 5 ergibt sich genauer aus den Figuren 3 bis 6. Die Figur 3 zeigt eine Rohrturbine 5. Diese weist ein Rohr 5.1 auf, das beim Betrieb des Kraftwerkes von Luft durchströmt ist, die aus Kammer 1 verdrängt wird.When lifting the water level, the trapped in the chamber 1 air is displaced upwards. It flows along the curved arrow. It leaves the chamber 1 through the upper opening 3. To the upper opening 3, a channel 4 is connected. This contains a power generation unit 5. The power generation unit 5 is preceded by a flap valve 6. The construction of the 3 shows a tube turbine 5. This has a tube 5.1, which is flowed through during operation of the power plant of air, which is displaced from chamber 1.
Die Rohrturbine ist eine Turbine, deren Rotor stets in ein und demselben Drehsinn umläuft, ungeachtet der Richtung des Luftstromes. Siehe GB-A-1 595 700.The tube turbine is a turbine whose rotor always revolves in one and the same sense of rotation, regardless of the direction of the air flow. See GB-A-1 595 700.
Wie man aus Figur 3 erkennt, umfasst die Rohrturbine 5 ferner zwei Rotoren 5.2, 5.3. Diese sind zum Rohr 5.1 koaxial angeordnet und von diesem umschlossen. Die beiden Rotoren 5.2, 5.3 arbeiten auf einen Generator 5.4. Dabei sind die beiden Rotoren 5.2, 5.3 derart gestaltet und angeordnet, dass sie stets in ein und demselben Drehsinn umlaufen, ungeachtet dessen, von welcher Seite der Luftstrom in das Rohr 5.1 eintritt. Dies ist deshalb notwendig beziehungsweise vorteilhaft, weil die Luft beim Anheben des Wasserspiegels in Kammer 1 landeinwärts strömt, und beim Absenken landauswärts.As can be seen from FIG. 3, the tube turbine 5 furthermore comprises two rotors 5.2, 5.3. These are arranged coaxially to the tube 5.1 and enclosed by this. The two rotors 5.2, 5.3 work on a generator 5.4. The two rotors 5.2, 5.3 are designed and arranged such that they always rotate in one and the same direction of rotation, regardless of which side of the air flow enters the tube 5.1. This is necessary or advantageous because the air flows inland when raising the water level in chamber 1, and when lowering the land away.
Der Generator 5.4 gibt elektrische Energie an ein hier nicht dargestelltes Stromnetz ab.The generator 5.4 outputs electrical energy to a power grid, not shown here.
Die Figuren 4 und 5 lassen in vergrößerter Darstellung eine Spritzdüse 5.5 erkennen, die an eine Spritzwasserleitung 5.6 angeschlossen ist. Siehe auch Figur 5. An die Spritzwasserleitung 5.6 sind im allgemeinen mehr Spritzdüsen angeschlossen, die derart gerichtet sind, dass die spritzenden oder träufelnden oder tropfenden Strahlen auf die Blätter der beiden Rotoren 5.2 und 5.3 treffen.Figures 4 and 5 can be seen in an enlarged view of a spray nozzle 5.5, which is connected to a spray water line 5.6. See also Figure 5. On the spray water line 5.6 more spray nozzles are generally connected, which are directed so that the splashing or dripping or dripping rays hit the blades of the two rotors 5.2 and 5.3.
Aus Figur 6 erkennt man das Ausmaß der auskristallisierten Salze im Bereich der Ein- oder Austrittskanten von Turbinenblättern. Die Ablagerungen erreichen im Laufe von Wochen oder Monaten ein erhebliches Ausmaß, wenn ihr Entstehen nicht mittels Maßnahmen gemäß der Erfindung verhindert wird. Siehe das im Querschnitt dargestellte Rotorblatt 7 mit Ablagerungen 8. Das in Figur 7 gezeigte Diagramm stellt auf der Abszisse das Verhältnis Fi zwischen der Geschwindigkeit der auf ein Rotorblatt auftreffenden Luft und der tangentialen Umlaufgeschwindigkeit des Rotors dar. Auf der Ordinate ist der Wirkungsgrad η der Turbine aufgetragen. Dabei veranschaulichen die Kreise den Wirkungsgrad η nach dem Aufbringen von Lösungsflüssigkeit auf die Turbinenblätter, und die Quadrate den Verlauf des Wirkungsgrades ohne Anwendung der Erfindung. FIG. 6 shows the extent of the crystallized salts in the region of the inlet or outlet edges of turbine blades. The deposits reach a considerable extent in the course of weeks or months, if their formation is not prevented by measures according to the invention. See the rotor blade 7 shown in cross-section with deposits 8. The graph shown in FIG. 7 represents on the abscissa the ratio Fi between the velocity of the air impinging on a rotor blade and the rotational speed of the rotor. The ordinate plots the efficiency η of the turbine. The circles illustrate the efficiency η after the application of solution liquid to the turbine blades, and the squares the course of the efficiency without application of the invention.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Kammer1 chamber
2 Wellen2 waves
3 Kammeröffnung3 chamber opening
4 Kanal4 channel
5 Energieerzeugungseinheit5 power generation unit
5.1 Rohr5.1 pipe
5.2 Rotor5.2 Rotor
5.3 Rotor5.3 Rotor
5.4 Generator5.4 Generator
5.5 Spritzdüse5.5 Spray nozzle
5.6 Spritzwasserleitung5.6 spray water line
6 Klappenventil6 flap valve
7 Rotorblatt7 rotor blade
8 Ablagerungen 8 deposits

Claims

Patentansprüche claims
1. Turbinenanlage zum Ausnutzen von Energie aus Meereswellen (2)1. Turbine plant for exploiting energy from sea waves (2)
1.1 mit einer Kammer (1), die an ihrem unteren und an ihrem oberen Ende je eine Öffnung (3) aufweist;1.1 with a chamber (1) having at its lower and at its upper end an opening (3);
1.2 mit einem an beiden Enden offenen Rohr (5.1) zum Führen einer Luftströmung;1.2 with an open at both ends tube (5.1) for guiding an air flow;
1.3 das untere. Ende der Kammer (1) ist zum Eintauchen in Meerwasser bestimmt, und die Öffnung (3) des oberen Endes ist an eines der Enden des Rohres (5.1) angeschlossen;1.3 the lower one. End of the chamber (1) is intended for immersion in seawater, and the opening (3) of the upper end is connected to one of the ends of the pipe (5.1);
1.4 mit einer vom Rohr (5.1) umschlossenen, zu diesem koaxial angeordneten Energieeinheit (5);1.4 with a pipe (5.1) enclosed, coaxially arranged for this energy unit (5);
1.5 es ist eine Sprüheinrichtung (5.5, 5.6) vorgesehen, die an eine Quelle eines salzlösenden, flüssigen oder gasförmigen oder dampfförmigen Mediums angeschlossen ist, und die das Medium auf die Rotorblätter aufbringt.1.5 a spray device (5.5, 5.6) is provided, which is connected to a source of a salt-dissolving, liquid or gaseous or vaporous medium, and which applies the medium to the rotor blades.
2. Turbinenanlage nach Anspruch 1 , gekennzeichnet durch die folgenden Merkmale:2. Turbine plant according to claim 1, characterized by the following features:
2.1 die Energieeinheit (5) umfasst wenigstens einen Turbinenrotor (5.2, 5.3) mit Rotorblättern sowie einen zum Rotor (5.2, 5.3) koaxialen und mit diesem in2.1 the energy unit (5) comprises at least one turbine rotor (5.2, 5.3) with rotor blades and one to the rotor (5.2, 5.3) coaxial and with this in
Triebverbindung stehenden Generator (5.4);Drive connection standing generator (5.4);
3. Turbinenanlage nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass zwei oder mehrere Turbinenrotoren (5.2, 5.3) vorgesehen sind.3. Turbine installation according to one of claims 1 or 2, characterized in that two or more turbine rotors (5.2, 5.3) are provided.
4. Turbinenanlage nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass jeder Rotor ungeachtet der Richtung der anströmenden Luft seine Drehrichtung beibehält. 4. Turbine plant according to one of claims 1 to 3, characterized in that each rotor, regardless of the direction of the incoming air maintains its direction of rotation.
5. Verfahren zum Betreiben einer Turbinenanlage nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Sprüheinrichtung intermittierend betrieben wird.5. A method for operating a turbine plant according to one of claims 1 to 4, characterized in that the spraying device is operated intermittently.
6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass der Zustand der Oberfläche der Rotorblätter bezüglich seiner Rauhigkeit sowie anderer Eigenschaften erfasst wird, dass der Sensor ein hiervon abgeleitetes Signal erzeugt, und dass die Sprüheinrichtung in Abhängigkeit von dem Signal betätigt wird.6. The method according to claim 5, characterized in that the state of the surface of the rotor blades with respect to its roughness and other properties is detected, that the sensor generates a signal derived therefrom, and that the spray device is actuated in response to the signal.
7. Verfahren nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass als Sprühmedium Wasser verwendet wird.7. The method according to claim 5 or 6, characterized in that water is used as the spray medium.
8. Verfahren nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass als Sprühmedium Seewasser verwendet wird. 8. The method according to claim 5 or 6, characterized in that seawater is used as the spray medium.
EP07846866A 2006-12-04 2007-11-29 Turbine plant for generating power from sea waves Withdrawn EP2100033A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006057383A DE102006057383A1 (en) 2006-12-04 2006-12-04 Turbine arrangement for energy utilization from sea waves, has chamber that has opening at its lower and upper ends and pipe that opens at both ends to lead air flow
PCT/EP2007/010338 WO2008067939A2 (en) 2006-12-04 2007-11-29 Turbine plant for generating power from sea waves

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EP (1) EP2100033A2 (en)
JP (1) JP5213872B2 (en)
KR (1) KR101384558B1 (en)
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AU (1) AU2007327989A1 (en)
CA (1) CA2671784A1 (en)
CL (1) CL2007003474A1 (en)
DE (1) DE102006057383A1 (en)
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KR20090086461A (en) 2009-08-12
JP5213872B2 (en) 2013-06-19
CA2671784A1 (en) 2008-06-12
DE102006057383A1 (en) 2008-06-05
US20090317230A1 (en) 2009-12-24
NZ577411A (en) 2011-04-29
KR101384558B1 (en) 2014-04-17
WO2008067939A3 (en) 2008-07-24
CL2007003474A1 (en) 2008-06-20
AU2007327989A1 (en) 2008-06-12
JP2010511832A (en) 2010-04-15
WO2008067939A2 (en) 2008-06-12
US8388301B2 (en) 2013-03-05

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