EP2516851A1 - Method of mounting a hydraulic pitch control system in a wind turbine hub - Google Patents
Method of mounting a hydraulic pitch control system in a wind turbine hubInfo
- Publication number
- EP2516851A1 EP2516851A1 EP10832677A EP10832677A EP2516851A1 EP 2516851 A1 EP2516851 A1 EP 2516851A1 EP 10832677 A EP10832677 A EP 10832677A EP 10832677 A EP10832677 A EP 10832677A EP 2516851 A1 EP2516851 A1 EP 2516851A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wtg
- pitch control
- control system
- hydraulic
- hub
- 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- Withdrawn
Links
- 238000000034 method Methods 0.000 title description 2
- 238000011065 in-situ storage Methods 0.000 claims abstract description 15
- 230000007935 neutral effect Effects 0.000 claims abstract 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
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
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0691—Rotors characterised by their construction elements of the hub
-
- 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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
-
- 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
- F05B2230/00—Manufacture
- F05B2230/60—Assembly methods
-
- 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
- F05B2250/10—Geometry two-dimensional
- F05B2250/11—Geometry two-dimensional triangular
-
- 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
- F05B2260/79—Bearing, support or actuation arrangements therefor
-
- 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
- F05B2270/00—Control
- F05B2270/60—Control system actuates through
- F05B2270/604—Control system actuates through hydraulic actuators
-
- 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
- Y02E10/72—Wind turbines with rotation axis in 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a pitch control system for wind turbine generators (WTG) of the type mentioned in the preamble to claim 1.
- WTG wind turbine generators
- known pitch control systems using either an electric or a hydraulic pitch control solution. Both systems have advantages and only a few disadvantages. More specific the present invention relates to a hydraulic pitch control system which has many advantages and only a few disadvantages compared with an electric pitch control solution.
- known hydraulic pitch control systems is rather complicated apparatuses requiring a lot of assembling work including complicated functionality testing before the mountings in situ and which normally also requires intensive security test after the mountings work in situ of such complicated pitch control systems.
- the present invention has for its purpose to provide a new and improved hydraulic pitch control system, by means of which may be obtained a minimum of in situ mounting works and where in situ testing of the pith control system may even be superfluous.
- the hydraulic pitch control system according to the invention is characterized in that said hydraulic pitch control system is in the form of a prefabricated, assembled and tested one piece hydraulic pitch control system unit ready for in situ mounting inside said WTG hub with a minimum of mounting work.
- said minimum mounting work may consists in connecting a predominantly triangular front frame structure of a carrying frame system for said hydraulic pitch control unit to a inside of a hub connection flange of said WTG hub opposite to an external connection flange for a main generator shaft of the WTG, by means of three sets of each two - four bolts and by connecting three sets of each two hydraulic tubes of the pitch control system to each of three hydraulic actuators for the WTG blades.
- the pitch control system according to the invention comprising energy re- serves in the form of a number of hydraulic pressure accumulators in the form of hydraulic cylinders which at one side of a piston are filled with hydraulic fluid while at the opposite side of the piston a pressure medium such as compressed nitrogen is present.
- the pitch control system according to the invention is furthermore such provided, that said carrying frame system comprise three inclined carrying arm members extending from said triangular front frame structure to a central carrying frame structure at the opposite end of the pitch control system, where active parts of three uniform partial hydraulic pitch control systems are situated.
- the pitch control system according to the invention is such provided, that said cylindrical hydraulic pressure accumulators are arranged in three groups so as to form a mutually balanced isosceles triangle, which groups of hydraulic pressure accumulators at one end are connected to said triangular front frame structure and at the opposite end are mutual interconnected at adjacent corners.
- each of said three groups consists of four cylindrical hydraulic pressure accumulators which at external side is provided with a plate shaped cover also having function as standing platform when entering the WTG hub for maintenance service of the pitch control unit.
- hydraulic pith control system fulfils as a one piece hydraulic pitch control system the following important features: • Assembled outside the WTG hub
- Fig. 1 shows a perspective view of an embodiment of a prefabricated hydraulic pitch control system according to the invention
- Fig. 2 shows a perspective view illustrating how the hydraulic pitch control system as a prefabricated unit is mounted inside a WTG hub opposite to the generator main shaft,
- Fig. 3 shows the size of the WTG hub and the hydraulic pitch control system by showing a grown up person inside the WTG hub as well
- Fig. 4 shows the hydraulic pitch control system as seen from the rear end of The WTG hub or the position of the generator main shaft
- Fig. 5 shows the hydraulic pitch control system as seen from the opposite open front end of the WTG hub.
- Fig. 1 shows an embodiment of a prefabricated one piece hydraulic pitch control system unit 2 according to the invention comprising three uniform hydraulic pitch control systems 4 each of which in principle is similar to the hydraulic pitch control system shown in Fig. 6 and where the three hydraulic pitch control systems 4 are arranged in a triangle extending cantilever from a triangular front frame structure 6 of a carrying frame system 8 adapted inside a WTG hub 10 (Figs. 2-5) to be connected to an inside of a hub connection flange 12 opposite to an external connection flange for a main generator shaft.
- Said carrying frame system 6 comprise three inclined carrying arm members 14 extending from said triangular front frame structure 6 to a central carrying frame structure at the opposite end of the hydraulic pitch control system unit 2, where active parts of three uniform partial hydraulic pitch control systems 4 are situated.
- Each of the three hydraulic pitch control systems 4 comprise a group of four hydraulic pressure accumulators 16 in the form of hydraulic cylinders 18, which at one side of a piston is filled with hydraulic fluid, while at the opposite side of said piston a pressure medium such as nitrogen is present.
- Each of the four groups of hydraulic pressure ac- cumulators are provided with a plate shaped cover 20 also having function as standing platform when persons entering the WTG hub 10 for maintenance service of the pitch control systems 4.
- the one piece hydraulic pitch control system unit 2 is as already mentioned mounted extending cantilever from the triangular carrying frame system 6 inside the WTG hub 10 by means of only a few bolts at the respective outside corners of the carrying frame system 6. Afterwards the in situ mounting is completed by connecting two hydraulic tubes between each hydraulic pitch control systems 4 and the hydraulic actuator of each WTG blades.
- hydraulic pith control system fulfils as a one piece hydraulic pitch control system unit 2 the following important features: ⁇ Assembled outside the WTG hub
- the pitch control system is adapted to be assembled at the main axle interface in the hub, and without any stiffeners in order to avoid loads to the pith control system originating from the structural flexing of the WTG hub.
- the pitch control system shows a very compact design and construction that enables the pitch control system as a complete assembly to enter the WTG hub either from the main axle side or from the front side of the WTG hub.
- the entire pitch control system unit 2 according to the invention is maintenance service friendly.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DKPA200970229 | 2009-11-25 | ||
PCT/DK2010/050318 WO2011063815A1 (en) | 2009-11-25 | 2010-11-24 | Method of mounting a hydraulic pitch control system in a wind turbine hub |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2516851A1 true EP2516851A1 (en) | 2012-10-31 |
EP2516851A4 EP2516851A4 (en) | 2014-06-18 |
Family
ID=44065883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10832677.8A Withdrawn EP2516851A4 (en) | 2009-11-25 | 2010-11-24 | Method of mounting a hydraulic pitch control system in a wind turbine hub |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2516851A4 (en) |
WO (1) | WO2011063815A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9695802B2 (en) | 2012-05-22 | 2017-07-04 | United Technologies Corporation | Wind turbine load mitigation |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2653716B1 (en) | 2012-04-16 | 2015-09-16 | Siemens Aktiengesellschaft | Installation/dismounting of a hub to/from a nacelle of a wind turbine by using a blade pitch angle adjustment device of the hub for orientating the hub |
JP5894890B2 (en) * | 2012-09-06 | 2016-03-30 | 株式会社日立製作所 | Wind power generation system, wind power generation system assembly method, or wind power generation system inspection method |
CN109356793B (en) * | 2018-08-31 | 2020-02-18 | 北京金风科创风电设备有限公司 | Mounting rack, energy storage unit, variable pitch system, wind generating set and method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19739164A1 (en) * | 1997-08-25 | 1999-03-04 | Inst Solare Energieversorgungstechnik Iset | Wind power plant with rotor and rotor rotational located at horizontal axis of nacelle-tower |
EP1241350A1 (en) * | 2001-01-22 | 2002-09-18 | Fundacion Fatronik | Individual pitch adjustment system for rotor blades |
US20060188371A1 (en) * | 2002-04-24 | 2006-08-24 | Mogens Christensen | Wind turbine, hydraulic system, air bleed system and method of controlling at least two wind turbine blades |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1146079A (en) * | 1980-03-17 | 1983-05-10 | Edward H. Kusiak | Wind turbine blade pitch adjustment system |
JP4142548B2 (en) * | 2003-10-09 | 2008-09-03 | ヤンマー株式会社 | Wind power generator |
-
2010
- 2010-11-24 EP EP10832677.8A patent/EP2516851A4/en not_active Withdrawn
- 2010-11-24 WO PCT/DK2010/050318 patent/WO2011063815A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19739164A1 (en) * | 1997-08-25 | 1999-03-04 | Inst Solare Energieversorgungstechnik Iset | Wind power plant with rotor and rotor rotational located at horizontal axis of nacelle-tower |
EP1241350A1 (en) * | 2001-01-22 | 2002-09-18 | Fundacion Fatronik | Individual pitch adjustment system for rotor blades |
US20060188371A1 (en) * | 2002-04-24 | 2006-08-24 | Mogens Christensen | Wind turbine, hydraulic system, air bleed system and method of controlling at least two wind turbine blades |
Non-Patent Citations (1)
Title |
---|
See also references of WO2011063815A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9695802B2 (en) | 2012-05-22 | 2017-07-04 | United Technologies Corporation | Wind turbine load mitigation |
Also Published As
Publication number | Publication date |
---|---|
EP2516851A4 (en) | 2014-06-18 |
WO2011063815A1 (en) | 2011-06-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20120614 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAX | Request for extension of the european patent (deleted) | ||
A4 | Supplementary search report drawn up and despatched |
Effective date: 20140519 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: F03D 11/00 20060101ALI20140513BHEP Ipc: F03D 7/02 20060101AFI20140513BHEP Ipc: F03D 1/06 20060101ALI20140513BHEP |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20141216 |