DE102012005271B3 - 1 - 7Propeller for a turbomachine or for a ship - Google Patents
1 - 7Propeller for a turbomachine or for a ship Download PDFInfo
- Publication number
- DE102012005271B3 DE102012005271B3 DE102012005271A DE102012005271A DE102012005271B3 DE 102012005271 B3 DE102012005271 B3 DE 102012005271B3 DE 102012005271 A DE102012005271 A DE 102012005271A DE 102012005271 A DE102012005271 A DE 102012005271A DE 102012005271 B3 DE102012005271 B3 DE 102012005271B3
- Authority
- DE
- Germany
- Prior art keywords
- hub body
- rotor blades
- propeller
- section
- contour
- 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.)
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Links
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/20—Hubs; Blade connections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/28—Other means for improving propeller efficiency
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H3/00—Propeller-blade pitch changing
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- 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
- F03B3/126—Rotors for essentially axial flow, e.g. for propeller turbines
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Hydraulic Turbines (AREA)
Abstract
Die Erfindung betrifft einen Propeller für eine Turbine oder für ein Schiff, umfassend die folgenden Merkmale oder Bauteile: – einen Rotor mit einem Nabenkörper; – Rotorblätter mit Zapfen, die vom Nabenkörper getragen sind; – eine Antriebswelle zum Verschwenken der Rotorblätter um eine zur Drehachse der Antriebswelle senkrechte Schwenkachse. Die Erfindung ist gekennzeichnet durch die folgenden Merkmale: – die Kontur des achssenkrechten Querschnitts des Nabenkörpers ist wenigstens auf einem Teil ihres Umfangs gegenüber der Kreisform konkav.The invention relates to a propeller for a turbine or for a ship, comprising the following features or components: a rotor with a hub body; - rotor blades with pegs carried by the hub body; - A drive shaft for pivoting the rotor blades about a pivot axis perpendicular to the axis of rotation of the drive shaft. The invention is characterized by the following features: the contour of the axially perpendicular cross section of the hub body is concave on at least part of its circumference with respect to the circular shape.
Description
Die Erfindung betrifft einen Propeller nach Art eines Schiffspropellers, zum Beispiel für ein Schiff oder für eine Turbine. Ein solcher Propeller umfasst eine Welle. Bei einem Schiff ist dies eine Antriebswelle, bei einer Turbine eine Abtriebswelle. Die Propellerblätter sind dabei vorwiegend flächige Körper, die im Allgemeinen dreidimensional gekrümmt sind. Eine typische Form der hier in Rede stehenden Propeller finden sich bei Kaplanturbinen. Siehe beispielsweise
Im Allgemeinen weist ein solcher Propeller zwei oder drei oder vier Rotorblätter auf. Auch mehrere Rotorblätter sind denkbar.In general, such a propeller has two or three or four rotor blades. Several rotor blades are conceivable.
Ein großes Problem bei Propellern der genannten Art ist das Auftreten von Kavitation. Darunter versteht man das Auftreten von Wasserdampfblasen, die durch einen lokalen niedrigen Druck entstehen. Werden die Dampfblasen in Gebietet höheren Druckes transportiert, implodieren diese. Hierbei entstehen Druckschläge, die auf das Material einwirken und zu Zerstörungen führen können.A big problem with propellers of the type mentioned is the occurrence of cavitation. This is the occurrence of water vapor bubbles caused by a local low pressure. If the vapor bubbles are transported in areas of higher pressure, they implode. This creates pressure surges that act on the material and can lead to destruction.
Der Erfindung liegt die Aufgabe zugrunde, solche Kavitation zu verringern oder zu vermeiden. Diese Aufgabe wird durch die Merkmale gemäß Anspruch 1 gelöst.The invention has for its object to reduce or avoid such cavitation. This object is solved by the features according to claim 1.
Der Erfindung liegen die folgenden Überlegungen zugrunde:
Kavitation tritt bei Propellern im Allgemeinen am Fuß des Rotorblattes auf, das heißt in Nabennähe. Die Kavitation ist nicht nur schädlich, sondern sie ist auch in Strömungsgewässern für Fische gefährlich. Sie bringt nämlich die Fische dazu, sich in den Kavitationsbereich zu begeben und dort verletzt zu werden.The invention is based on the following considerations:
Cavitation occurs in propellers generally at the foot of the rotor blade, that is near the hub. The cavitation is not only harmful, but it is also dangerous in fish flow waters. It causes the fish to go into the cavitation area and get hurt there.
Durch die Gestaltung der Kontur des Nabenkörpers im Sinne der Erfindung wird die Kavitation erheblich minimiert oder gar aufgehoben. Gemäß der Erfindung wird vom üblichen kreisrunden Querschnitt des Nabenkörpers abgewichen durch Abtragen von Material, da wo es möglich ist. Die Kontur des Querschnittes des Nabenkörpers wird wenigstens auf einem Teil ihres Umfanges gegenüber der Kreisform konkav.Due to the design of the contour of the hub body according to the invention, the cavitation is considerably minimized or even eliminated. According to the invention, deviates from the usual circular cross-section of the hub body by removing material, where possible. The contour of the cross section of the hub body is concave at least on a part of its circumference relative to the circular shape.
Diese Gestaltung kann sowohl zwischen den Rotorblättern vorgenommen werden, als auch an den Rotorblättern.This design can be made both between the rotor blades, as well as on the rotor blades.
Die Erfindung sowie der Stand der Technik sind anhand der Zeichnung näher erläutert. Darin ist schematisch im Einzelnen folgendes dargestellt:The invention and the prior art are explained in more detail with reference to the drawing. The following is shown schematically in detail:
Der in
Der Nabenkörper
Bei der vorbekannten Ausführungsform gemäß
Bei der Gegenüberstellung gemäß
Bei der Ausführungsform gemäß
Bei der erfindungsgemäßen Ausführungsform gemäß
Eine interessante Ausführungsform ist in
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Nabenkörperhub body
- 22
- Rotorblattrotor blade
- 33
- Zapfenspigot
- 44
- Drehachseaxis of rotation
- 55
- Spaltgap
- 66
- Schwenkachseswivel axis
Claims (5)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012005271A DE102012005271B3 (en) | 2012-03-15 | 2012-03-15 | 1 - 7Propeller for a turbomachine or for a ship |
PCT/EP2013/051730 WO2013135417A1 (en) | 2012-03-15 | 2013-01-30 | Propeller for a turbomachine or for a ship |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012005271A DE102012005271B3 (en) | 2012-03-15 | 2012-03-15 | 1 - 7Propeller for a turbomachine or for a ship |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102012005271B3 true DE102012005271B3 (en) | 2013-02-28 |
Family
ID=47665524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102012005271A Active DE102012005271B3 (en) | 2012-03-15 | 2012-03-15 | 1 - 7Propeller for a turbomachine or for a ship |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102012005271B3 (en) |
WO (1) | WO2013135417A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2942518B1 (en) * | 2014-05-08 | 2019-03-20 | GE Renewable Technologies | Double-regulated turbine, installation for converting hydraulic energy and process for the rehabilitation of a double-regulated turbine |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1634329A (en) * | 1927-07-05 | Henry malm | ||
DE565038C (en) * | 1930-11-25 | 1932-11-25 | J M Voith Maschinenfabrik | Impeller for centrifugal machines u. Like. With rotatable blades and one-piece hub body |
US4988303A (en) * | 1989-01-23 | 1991-01-29 | Thomas William K | Adjustable agitator assembly |
WO2000069719A1 (en) * | 1999-05-19 | 2000-11-23 | Rolls-Royce Ab | Marine propeller with detachable blades |
DE10255770A1 (en) * | 2002-11-29 | 2004-06-17 | Voith Siemens Hydro Power Generation Gmbh & Co. Kg | water turbine |
FR2853619A1 (en) * | 2003-04-08 | 2004-10-15 | Daniel Jean Clin | Propeller device for motorized/non-motorized nautical machine, has wedges fixed at anchoring points on sides of a matrix according to rotation axis of drive shaft, to position blades at a predetermined angle |
DE102007061185A1 (en) * | 2007-12-17 | 2009-06-18 | Voith Patent Gmbh | Diving power plant powered by a water flow |
GB2479380A (en) * | 2010-04-07 | 2011-10-12 | Blade Dynamics Ltd | Wind or water turbine rotor |
DE102010033940A1 (en) * | 2010-08-10 | 2012-02-16 | Voith Patent Gmbh | Hydroelectric power plant and method for its assembly |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1634330A (en) * | 1926-09-13 | 1927-07-05 | Malm Henry | Propeller |
US1962383A (en) * | 1932-12-15 | 1934-06-12 | James Leffel & Company | Hydraulic turbine |
US6109871A (en) * | 1997-03-31 | 2000-08-29 | Horton, Inc. | Integrated fan assembly with variable pitch blades |
DE102010033947B4 (en) | 2010-08-10 | 2016-04-28 | Gottfried Wilhelm Leibniz Universität Hannover | Forming process for a workpiece using the electroplastic effect |
-
2012
- 2012-03-15 DE DE102012005271A patent/DE102012005271B3/en active Active
-
2013
- 2013-01-30 WO PCT/EP2013/051730 patent/WO2013135417A1/en active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1634329A (en) * | 1927-07-05 | Henry malm | ||
DE565038C (en) * | 1930-11-25 | 1932-11-25 | J M Voith Maschinenfabrik | Impeller for centrifugal machines u. Like. With rotatable blades and one-piece hub body |
US4988303A (en) * | 1989-01-23 | 1991-01-29 | Thomas William K | Adjustable agitator assembly |
WO2000069719A1 (en) * | 1999-05-19 | 2000-11-23 | Rolls-Royce Ab | Marine propeller with detachable blades |
DE10255770A1 (en) * | 2002-11-29 | 2004-06-17 | Voith Siemens Hydro Power Generation Gmbh & Co. Kg | water turbine |
FR2853619A1 (en) * | 2003-04-08 | 2004-10-15 | Daniel Jean Clin | Propeller device for motorized/non-motorized nautical machine, has wedges fixed at anchoring points on sides of a matrix according to rotation axis of drive shaft, to position blades at a predetermined angle |
DE102007061185A1 (en) * | 2007-12-17 | 2009-06-18 | Voith Patent Gmbh | Diving power plant powered by a water flow |
GB2479380A (en) * | 2010-04-07 | 2011-10-12 | Blade Dynamics Ltd | Wind or water turbine rotor |
DE102010033940A1 (en) * | 2010-08-10 | 2012-02-16 | Voith Patent Gmbh | Hydroelectric power plant and method for its assembly |
Also Published As
Publication number | Publication date |
---|---|
WO2013135417A1 (en) | 2013-09-19 |
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R012 | Request for examination validly filed | ||
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |
Effective date: 20130529 |