DE102014200186A1 - Adjustment device for an impeller - Google Patents
Adjustment device for an impeller Download PDFInfo
- Publication number
- DE102014200186A1 DE102014200186A1 DE102014200186.2A DE102014200186A DE102014200186A1 DE 102014200186 A1 DE102014200186 A1 DE 102014200186A1 DE 102014200186 A DE102014200186 A DE 102014200186A DE 102014200186 A1 DE102014200186 A1 DE 102014200186A1
- Authority
- DE
- Germany
- Prior art keywords
- blades
- impeller
- adjusting device
- return
- rotational position
- 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
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
- F03B3/12—Blades; Blade-carrying rotors
- F03B3/14—Rotors having adjustable blades
- F03B3/145—Mechanisms for adjusting the blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0055—Rotors with adjustable blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D3/00—Axial-flow pumps
- F04D3/005—Axial-flow pumps with a conventional single stage 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
- F05B2260/00—Function
- F05B2260/40—Transmission of power
- F05B2260/406—Transmission of power through hydraulic systems
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- 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
- F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
- F05B2260/76—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism using auxiliary power sources
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Hydraulic Turbines (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
Verstelleinrichtung für ein Laufrad einer Axialturbine oder einer Axialpumpe mit verstellbaren Laufschaufeln, wobei die zum Verstellen der Laufschaufeln benötigte Energie elektrisch auf das Laufrad übertragen wird, und die Verstellung der Laufschaufeln mit Hilfe einer elektro-hydraulischen Antriebseinheit bewirkt wird.Adjusting device for an impeller of an axial turbine or an axial pump with adjustable blades, wherein the energy required for adjusting the blades is electrically transmitted to the impeller, and the adjustment of the blades by means of an electro-hydraulic drive unit is effected.
Description
Die Erfindung betrifft eine Verstelleinrichtung für ein Laufrad mit verstellbaren Laufschaufeln einer Axialturbine oder einer Axialpumpe z.B. vom Typ Kaplan. Solche Laufräder werden beispielsweise auch bei Rohrturbinen eingesetzt.The invention relates to an adjusting device for an impeller with adjustable blades of an axial turbine or an axial pump, for example. of the type Kaplan. Such wheels are used for example in tubular turbines.
Verstelleinrichtungen zum Schwenken der Laufradschaufeln sind aus dem allgemeinen Stand der Technik bekannt. So zeigt die
Da das Hydrauliköl von außen in die rotierende Welle eingebracht werden muss, ergibt sich ein hoher technischer Aufwand für die Verrohrung und das Abdichten der Ölzuführung. Dieser Aufwand ist auch deswegen groß, weil sich das Hydrauliköl unter hohem Druck befindet (160 bar sind nicht ungewöhnlich). Durch die langen Verrohrungswege wird außerdem eine große Menge von Hydrauliköl benötigt. Im Fehlerfall, d.h. wenn eine Undichtigkeit auftritt, ergeben sich daher hohe Risiken für die Umwelt, wenn Hydrauliköl ins Wasser gelangt.Since the hydraulic oil must be introduced from the outside into the rotating shaft, there is a high technical outlay for the piping and the sealing of the oil supply. This effort is also great because the hydraulic oil is under high pressure (160 bar are not uncommon). The long piping paths also require a large amount of hydraulic oil. In case of error, i. When a leak occurs, therefore, there are high risks to the environment when hydraulic oil enters the water.
Die Aufgabe der hier vorliegenden Erfindung besteht darin, eine Verstelleinrichtung zum Schwenken der Laufradschaufeln in der Art weiterzuentwickeln, dass ein sehr einfacher und effizienter Aufbau entsteht, welcher die Risiken bei Ölaustritt für die Umwelt verkleinert. Dabei darf natürlich die Regelgenauigkeit nicht vermindert werden.The object of the present invention is to further develop an adjusting device for pivoting the impeller blades in such a way that a very simple and efficient structure is created, which reduces the risks of oil leakage to the environment. Of course, the control accuracy must not be reduced.
Der Erfinder hat erkannt, dass die gestellte Aufgabe durch eine Verstelleinrichtung zum Schwenken der Laufradschaufeln mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst werden kann. Weitere vorteilhafte Ausgestaltungen ergeben sich aus den hiervon abhängigen Ansprüchen.The inventor has recognized that the stated object can be achieved by an adjusting device for pivoting the impeller blades with the characterizing features of claim 1. Further advantageous embodiments will become apparent from the dependent claims therefrom.
Der Erfinder hat erkannt, dass die genannten Probleme dadurch verursacht werden, dass die Energie zum Verstellen der Laufradschaufeln mit Hilfe des Hydrauliköls in das Laufrad transportiert wird. Als Alternative dafür bietet sich die Übertragung der Energie in elektrischer Form an. Dieser Gedanke ist nicht neu und findet sich z.B. in der
Der Erfinder hat erkannt, dass sich die Probleme mit der elektrischen Energieübertragung dadurch meistern lassen, wenn anstelle eines elektrischen Motors zum Wandeln der elektrischen Energie in mechanische Energie, eine Kombination von Elektromotor, Pumpte, Ventilblock, Tank und Hydraulikzylinder verwendet wird. Diese Kombination ist unter dem Namen elektro-hydraulische Antriebseinheit bekannt. D.h. die elektrische Energie wird mit Hilfe der Pumpe in hydraulische Energie und dann über den Hydraulikzylinder in mechanische Energie gewandelt. Durch die Verwendung einer solchen elektro-hydraulischen Antriebseinheit können die Anforderungen an die Regelgenauigkeit erfüllt werden. Die Menge an Hydrauliköl, die bei Verwendung einer elektro-hydraulischen Antriebseinheit benötigt wird, ist um ein Vielfaches geringer als bei der Lösung gemäß dem Stand der Technik (Übertragung der Energie mittels Hydrauliköl).The inventor has recognized that the problems with electric power transmission can be mastered by using a combination of electric motor, pump, valve block, tank and hydraulic cylinder instead of an electric motor for converting electrical energy into mechanical energy. This combination is known under the name electro-hydraulic drive unit. That the electrical energy is converted into hydraulic energy by means of the pump and then into mechanical energy via the hydraulic cylinder. By using such an electro-hydraulic drive unit, the requirements for the control accuracy can be met. The amount of hydraulic oil that is required when using an electro-hydraulic drive unit is many times less than in the solution according to the prior art (transmission of energy by means of hydraulic oil).
Die jeweils aktuelle Drehstellung der Laufradschaufeln zwecks Rückführung in den Regler der Turbine bzw. der Pumpe, kann dabei ebenfalls elektrisch über separate Schleifkontakte erfolgen, oder auch per Drahtlosübertragung beispielsweise mit Hilfe der Bluetooths Technologie.The respective current rotational position of the impeller blades for the purpose of returning to the controller of the turbine or the pump can also be done electrically via separate sliding contacts, or by wireless transmission, for example with the aid of Bluetooth technology.
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 845930 [0002] DE 845930 [0002]
- DE 464551 [0006, 0006] DE 464551 [0006, 0006]
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014200186.2A DE102014200186A1 (en) | 2014-01-09 | 2014-01-09 | Adjustment device for an impeller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014200186.2A DE102014200186A1 (en) | 2014-01-09 | 2014-01-09 | Adjustment device for an impeller |
Publications (1)
Publication Number | Publication Date |
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DE102014200186A1 true DE102014200186A1 (en) | 2015-01-08 |
Family
ID=52106464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102014200186.2A Ceased DE102014200186A1 (en) | 2014-01-09 | 2014-01-09 | Adjustment device for an impeller |
Country Status (1)
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DE (1) | DE102014200186A1 (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE464551C (en) | 1926-10-27 | 1928-08-20 | Hans Thoma Dr Ing | Controller for water turbines with rotating guide and rotor blades and two separate servomotors |
DE845930C (en) | 1941-03-07 | 1952-08-07 | English Electric Co Ltd | Propeller rotor |
DE1170275B (en) * | 1962-07-23 | 1964-05-14 | Dieter Muehlenbruch | Device for adjusting the impeller blades of a flow machine, in particular a variable pitch propeller for ships |
CH441163A (en) * | 1966-01-21 | 1967-07-31 | Escher Wyss Ag | Kaplan turbine or Kaplan pump impeller with each blade being driven by its own rotary actuator |
DE2165635A1 (en) * | 1971-12-30 | 1973-07-12 | Siemens Ag | ARRANGEMENT FOR OPTIMAL ADJUSTMENT OF THE BLADES OF WATER TURBINES |
DE102006057518A1 (en) * | 2006-12-06 | 2008-06-12 | Schöpf, Alfred | Measuring turbine for measurement of flow volume in channel, has discharge flow in which turbine wheel is pivoted swiveling, and speed of turbine wheel is detected by evaluation electronics to compute and display volume of fluid |
EP1959127A2 (en) * | 2007-02-14 | 2008-08-20 | LTi REEnergy GmbH | Method and device for the indirect determination of dynamic measurements in a wind or water power plant |
US8129855B1 (en) * | 2007-12-02 | 2012-03-06 | Lucas Tong | Portable turbine systems |
DE102012009084B3 (en) * | 2012-05-09 | 2013-05-23 | Voith Patent Gmbh | Kaplan turbine with adjustable blades |
-
2014
- 2014-01-09 DE DE102014200186.2A patent/DE102014200186A1/en not_active Ceased
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE464551C (en) | 1926-10-27 | 1928-08-20 | Hans Thoma Dr Ing | Controller for water turbines with rotating guide and rotor blades and two separate servomotors |
DE845930C (en) | 1941-03-07 | 1952-08-07 | English Electric Co Ltd | Propeller rotor |
DE1170275B (en) * | 1962-07-23 | 1964-05-14 | Dieter Muehlenbruch | Device for adjusting the impeller blades of a flow machine, in particular a variable pitch propeller for ships |
CH441163A (en) * | 1966-01-21 | 1967-07-31 | Escher Wyss Ag | Kaplan turbine or Kaplan pump impeller with each blade being driven by its own rotary actuator |
DE2165635A1 (en) * | 1971-12-30 | 1973-07-12 | Siemens Ag | ARRANGEMENT FOR OPTIMAL ADJUSTMENT OF THE BLADES OF WATER TURBINES |
DE102006057518A1 (en) * | 2006-12-06 | 2008-06-12 | Schöpf, Alfred | Measuring turbine for measurement of flow volume in channel, has discharge flow in which turbine wheel is pivoted swiveling, and speed of turbine wheel is detected by evaluation electronics to compute and display volume of fluid |
EP1959127A2 (en) * | 2007-02-14 | 2008-08-20 | LTi REEnergy GmbH | Method and device for the indirect determination of dynamic measurements in a wind or water power plant |
US8129855B1 (en) * | 2007-12-02 | 2012-03-06 | Lucas Tong | Portable turbine systems |
DE102012009084B3 (en) * | 2012-05-09 | 2013-05-23 | Voith Patent Gmbh | Kaplan turbine with adjustable blades |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed | ||
R230 | Request for early publication | ||
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |