EP3488098A1 - Windenergieanlagen-rotorblatt und windenergieanlagen-rotorblattspitze - Google Patents
Windenergieanlagen-rotorblatt und windenergieanlagen-rotorblattspitzeInfo
- Publication number
- EP3488098A1 EP3488098A1 EP17731910.0A EP17731910A EP3488098A1 EP 3488098 A1 EP3488098 A1 EP 3488098A1 EP 17731910 A EP17731910 A EP 17731910A EP 3488098 A1 EP3488098 A1 EP 3488098A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor blade
- wind turbine
- blade tip
- wall
- turbine rotor
- 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- Withdrawn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
- 238000005266 casting Methods 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims abstract description 5
- 239000006260 foam Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 239000011152 fibreglass Substances 0.000 claims description 3
- 239000002657 fibrous material Substances 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 14
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 5
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000013518 molded foam Substances 0.000 description 2
- 238000003856 thermoforming Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000000275 quality assurance Methods 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
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- 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
- F03D80/30—Lightning protection
-
- 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
-
- 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
- F05B2240/302—Segmented or sectional blades
-
- 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
- F05B2240/307—Blade tip, e.g. winglets
-
- 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
- F05B2280/00—Materials; Properties thereof
- F05B2280/10—Inorganic materials, e.g. metals
-
- 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
- F05B2280/00—Materials; Properties thereof
- F05B2280/60—Properties or characteristics given to material by treatment or manufacturing
- F05B2280/6012—Foam
-
- 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 wind turbine rotor blade and a wind turbine rotor blade tip.
- the invention also relates to a method for producing a wind turbine rotor blade tip.
- a wind turbine rotor blade typically has a rotor blade tip and a rotor blade root by means of which the rotor blade is attached to a rotor of a wind turbine.
- WO 2004/061298 shows a wind turbine rotor blade with a rotor blade tip, which is bent. Such a rotor blade tip is manufactured separately and then connected to the rest of the rotor blade.
- the German Patent and Trademark Office has the following documents: DE 31 43 686 A1, DE 10 2009 046 586 A1, DE 10 2010 040 596 A1 and WO 2004/061 298 A3.
- the rotor blade tip should be easier and less expensive to produce.
- a wind turbine rotor blade with a rotor blade root and a rotor blade tip is provided.
- the rotor blade tip has a metal wall, which is made by a casting method or a Tiefzi eh method, and a filling material within the wall on.
- at least first webs are provided within the wall.
- gear elements are provided on an inner side of the wall.
- the wall is an outer wall of the rotor blade tip.
- the invention also relates to a wind turbine rotor blade tip having a metal wall which is made by a casting or deep drawing process and wherein a filler material (e.g., injected by injection molding) is injected inside the wall.
- a filler material e.g., injected by injection molding
- the invention also relates to a method of manufacturing a wind turbine rotor blade tip comprising the steps of: forming a metal wall by a casting process or a deep drawing process and injecting a filler within the metal wall.
- the filling material may, for. B. represent a PU foam or a 1- or 2-component foam.
- a wind turbine rotor blade is provided with a separate rotor blade tip.
- the tip is made by z. B.
- a skeleton of a rotor blade tip for example, by casting aluminum or by Formziehbleche is made.
- the skeleton optionally has at least one web. These webs may be configured as connecting webs and extending within the rotor blade tip.
- a negative PU injection mold is produced with the desired configuration of the rotor blade tip.
- the rotor blade tip skeleton can be inserted in the negative mold and the mold can be filled with PU injection molding.
- glass fiber mats or carbon fiber mats, rovings, fiber fabrics, fiber fabrics, prepregs, etc. may be placed in the mold prior to injection molding of the filler material.
- a metallic pan of cast aluminum or a deep-drawn sheet can be made and this tub can then be filled by a PU injection.
- a shell of the rotor blade tip is produced by a cast aluminum or by using an aluminum thermoforming sheet.
- longitudinal and transverse webs may be provided. These longitudinal and transverse webs can be produced during the aluminum casting of the casing. The webs can alternatively be added later or attached.
- toothing units for example in the form of mushroom heads or head bolt plugs, may be provided on the inside of the wall of the rotor blade tip. These toothed elements serve to better interlock the injected PU foam with the wall of the rotor blade tip.
- the rotor blade tip according to the invention can be straight or bent (eg in the form of a winglet). Furthermore, the rotor blade tip may have an edge bend.
- FIG. 1 shows a schematic representation of a wind energy plant according to the invention
- Fig. 2 shows a schematic sectional view of a rotor blade tip according to a first embodiment
- FIG 3 shows a schematic sectional view of a rotor blade tip according to a second exemplary embodiment.
- Fig. 1 shows a schematic representation of a wind turbine according to the invention.
- the wind energy plant 100 has a tower 102 and a nacelle 104 on the tower 102.
- an aerodynamic rotor 106 with three rotor blades 200 and a spinner 1 10 is provided at the nacelle 104.
- the aerodynamic rotor 106 is set during operation of the wind turbine by the wind in a rotary motion and thus also rotates a rotor or rotor of a generator which directly or indirectly with coupled to the aerodynamic rotor 106.
- the electric generator is disposed in the nacelle 104 and generates electrical energy.
- the pitch angles of the rotor blades 200 can be changed by pitch motors on the rotor blade roots 108b of the respective rotor blades 200.
- the rotor blades 200 have a rotor blade root 220 and a rotor blade tip 210.
- the rotor blade 200 is attached by means of the blade root 220 to the spinner 1 10 of the wind turbine.
- Fig. 2 shows a schematic sectional view of a rotor blade tip according to a first embodiment.
- the rotor blade tip 210 according to a first embodiment has a sheath 21 1, a first and second end 212, 213.
- the shell 21 1 or the wall 21 1 can be produced by a cast aluminum. Alternatively, the shell or wall 21 1 can be produced by aluminum deep-drawn sheets.
- Within the wall 21 1 are transverse and longitudinal webs 214, 215 are provided. These transverse and / or longitudinal webs 214, 215 can be produced in aluminum casting together with the wall 21 1. Alternatively, the webs may be designed as aluminum profiles and subsequently introduced.
- the use of, for example, aluminum for the wall 21 1 is advantageous because erosion protection can be provided, in particular at the rotor blade nose edge. Furthermore, a rotor blade tip produced in this way can be used as a lightning receptor and for connection to a lightning conductor. Furthermore, the rotor blade tip and in particular the first end 212 can be used for connection to the rest of the rotor blade.
- the webs 214 and 215 may optionally be provided to increase the rigidity of the rotor blade tip.
- a negative (PU) injection mold can be produced.
- the rotor blade tip produced by the aluminum casting can be inserted into the negative mold and the negative mold can be filled with a filling material (eg a PU injection-molded foam or a 1- or 2-component foam).
- a filling material eg a PU injection-molded foam or a 1- or 2-component foam.
- fiberglass or carbon fiber mats may be used between the inside of the wall 21 1 and the injection molding. As a result, the strength values can be increased.
- 3 shows a schematic sectional view of a rotor blade tip according to a second exemplary embodiment.
- a rotor blade tip which has a metallic trough, for example by cast aluminum or by a deep-drawn sheet metal.
- This tub can with a filling material, eg. B. a PU injection-molded foam or a 1- or 2-component foam, are filled.
- a filling material eg. B. a PU injection-molded foam or a 1- or 2-component foam
- an already existing mold for the rotor blade tip can be used for producing a casting trough for PU injection molding.
- the required pan can be made from a thermoforming sheet.
- the trough can optionally represent the suction side or the pressure side of the rotor blade tip.
- toothing units such as T-bars or mushroom heads or head bolzendü can be provided at.
- the provision of the toothed elements is advantageous in terms of the tensile strength of the rotor blade tip.
- the toothed elements can be cast during the aluminum casting, for example. Alternatively or additionally, the toothed elements can be screwed or welded.
- a negative (PU) injection mold for the desired shape of the rotor blade tip can be provided.
- the produced tub can be inserted into this negative mold and the negative mold can, for. B. be filled with PU injection.
- fiberglass or carbon fiber mats, rovings, fabrics, scrims, prepregs, etc. can be inserted.
- the rotor blade tips described according to the invention are advantageous because they have a better durability and a higher strength than rotor blade tips according to the prior art. Furthermore, the production possibilities are improved and there are simpler quality assurance options, since the critical points are easier to control (for example wall thicknesses of the casting material and cavities in the foam).
- the durability of the rotor blade tips can be increased. Cracks and the defects of the rotor blade tips can be avoided. Furthermore, costs due to an exchange of the rotor blade tips and the concomitant downtime of the wind turbines can be avoided.
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)
- Wind Motors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016113574.7A DE102016113574A1 (de) | 2016-07-22 | 2016-07-22 | Windenergieanlagen-Rotorblatt und Windenergieanlagen-Rotorblattspitze |
| PCT/EP2017/065396 WO2018015098A1 (de) | 2016-07-22 | 2017-06-22 | Windenergieanlagen-rotorblatt und windenergieanlagen-rotorblattspitze |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3488098A1 true EP3488098A1 (de) | 2019-05-29 |
Family
ID=59093582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17731910.0A Withdrawn EP3488098A1 (de) | 2016-07-22 | 2017-06-22 | Windenergieanlagen-rotorblatt und windenergieanlagen-rotorblattspitze |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3488098A1 (de) |
| DE (1) | DE102016113574A1 (de) |
| WO (1) | WO2018015098A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3143686A1 (de) * | 1981-11-04 | 1983-05-19 | Walter 2330 Eckernförde Stephenson | Rotorblatt fuer horizontalachs- windkraftanlage |
| ES2178903B1 (es) * | 1999-05-31 | 2004-03-16 | Torres Martinez M | Pala para aerogenerador. |
| ES2440218T3 (es) | 2003-01-02 | 2014-01-28 | Wobben Properties Gmbh | Pala de rotor de turbina eólica con emisión de ruido reducida |
| EP2770197A3 (de) * | 2003-09-29 | 2014-09-17 | Vestas Wind Systems A/S | Windturbinenschaufel, Windturbine, Verfahren zur Bereitstellung von Blitzableitermitteln an einer Windturbinenschaufel und Verwendung davon |
| DE102009046586B4 (de) * | 2009-11-10 | 2012-02-23 | Nordex Energy Gmbh | Blattspitze für ein Rotorblatt einer Windenergieanlage und Verfahren zur Montage der Blattspitze an ein Rotorblatt |
| DE102010040596A1 (de) * | 2010-09-10 | 2012-03-15 | Aloys Wobben | Abnehmbare Rotorblattspitze |
| RU2608453C2 (ru) * | 2012-11-15 | 2017-01-18 | Воббен Пропертиз Гмбх | Законцовка лопасти ротора |
| US9790919B2 (en) * | 2014-02-25 | 2017-10-17 | General Electric Company | Joint assembly for rotor blade segments of a wind turbine |
-
2016
- 2016-07-22 DE DE102016113574.7A patent/DE102016113574A1/de not_active Withdrawn
-
2017
- 2017-06-22 WO PCT/EP2017/065396 patent/WO2018015098A1/de not_active Ceased
- 2017-06-22 EP EP17731910.0A patent/EP3488098A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018015098A9 (de) | 2018-08-09 |
| DE102016113574A1 (de) | 2018-01-25 |
| WO2018015098A1 (de) | 2018-01-25 |
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