WO1986002701A1 - Rotor de moulin a vent avec pales a pas ajustable; moulins a vent utilisant ce rotor - Google Patents
Rotor de moulin a vent avec pales a pas ajustable; moulins a vent utilisant ce rotor Download PDFInfo
- Publication number
- WO1986002701A1 WO1986002701A1 PCT/DK1985/000102 DK8500102W WO8602701A1 WO 1986002701 A1 WO1986002701 A1 WO 1986002701A1 DK 8500102 W DK8500102 W DK 8500102W WO 8602701 A1 WO8602701 A1 WO 8602701A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hub
- wing
- wings
- nose
- stays
- Prior art date
Links
- 230000005484 gravity Effects 0.000 abstract description 3
- 239000002184 metal Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 235000013882 gravy Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding 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
- F03D1/0658—Arrangements for fixing wind-engaging parts to a 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
- 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
-
- 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
Definitions
- the present invention relates to a windmill rotor of the kind comprising a) a hub with an axially protruding hub nose, b) a number of wings extending substantially radially from and being rotatably supported on said hub about axes in general extending radially, ⁇ ) a nose stay extending from the outermost part of the root of each wing to a part of the hub nose axially spaced from the hub, d) a number of intermediate stays connecting the outer ⁇ most parts of the roots of the wings with each other, and e) means for adjusting the angle of the wings relative to the wind direction by turning the wings about said axes.
- variable-pitch wings In windmill rotors of this kind, it is difficult to sup ⁇ port the variable-pitch wings on the rotor in a stable manner without using heavy and expensive bearing means. In many cases the wing roots are also required to exhi ⁇ bit a very great mechanical strength, which - of course - also increases weight and costs.
- a first embodiment of the windmill rotor according to the present invention is characterized in that at or near its central part each intermediate stay is connect ⁇ ed to the hub through an arm extending substantially ra ⁇ dially and rigidly connected to the hub. With this ar ⁇ rangement, the bearing shaft mentioned above is relieved of tangential forces and couples caused by wind and gra ⁇ vity.
- a second embodiment of the windmill rotor according to the present invention is characterized in that the pitch bearings are placed in such a manner relative to each wing, that the wing turning axis (the axis of the shaft) is situated between the forward edge of the wing and the aerodynamic centre line of the wing. With this arrange ⁇ ment, a strong wind load will attempt to move the wings into a pitch position, in which the wind load is reduced, provided - of course - that the adjustment mechanism for the wings is adapted to accommodate such movements.
- the present invention also relates to a windmill with a windmill rotor of the kind referred to initially, and according to the present invention this windmill is cha ⁇ racterized in that the windmill rotor exhibits at least the features set forth in the paragraph marked f) above.
- Figure 1 in perspective shows a windmill with a windmill rotor according to the present ' invention
- Figure 2 is a partial view showing, partly in section, the hub of the windmill rotor, the innermost portion of a wing as well as the means connect- ing the wing to the hub,
- Figure 3 is a partial section along the line III-III in
- Fig. 2 shows the control means for the wing in question
- Figure 4 shows roughly the same as Fig. 3, but as viewed from the front along the axis of the windmill rotor.
- the windmill or wind power generator shown in Fig. 1 in a known manner comprises a tower 1, on which a gear box 2 is supported rotatably about a vertical axis and adapt- ed to be adjusted in azimuth by means of control rotors 3, the latter in a known manner keeping the main windmill rotor 4 facing towards the wind, the direction of which is indicated by the arrow 5.
- Each of the wings 6 of the main windmill rotor 4 is ro- tatably supported on a common hub 7 by means of a bearing shaft 8, the radially innermost end of which, as shown in Fig. 4, is secured to the hub 7.
- the hub 7 consists of a hub sleeve 9 keyed onto a stub shaft 10 protruding from the gear box 2, a triangular hub plate 11 situated in a radial plane and secured by welding around the hub sleeve 9, as well as three wing base plates 12 secured by wel ⁇ ding to the outer edges of the hub plate 11.
- each wing 6 is rotatably supported about the bearing shaft 8 by means of outer and inner pitch bearings 15 and 16 re- spectively.
- the inner part of the wing root 14 is surrounded by an inner wing root fit ⁇ ting 17, connected partly to the rotatable part of the inner pitch bearing 15, partly through a rod mechanism 18 to a pitch adjustment cylinder 19, the latter in a si ⁇ milar manner (not shown) also being connected to the re- maining wings 6 and adapted to adjust their angle of attach in relation to the wind.
- the pitch cylinder 19 is situated in a hub nose 20, in the example shown consisting of a three-legged "tower" of T-profile steel, the broadest end of which is welded to the hub plate 11.
- a nose stay 21 is secured to the forward end of the hub nose 20, said nose stay 21 extending radially outwards and rearwards to the outermost end of each bearing shaf 8, to which the nose stay is secured immediately radially within the outer pitch bearing 16.
- the outermost ends of the bearing shafts 8 are intercon ⁇ nected by means of intermediate stays 22, each at or close to the center thereof being secured to the radially outer- most end of a radial arm 23, the radially innermost end of which is secured to the' end of the adjacent wing base pla ⁇ te 12 lying r.earwardmost in the direction 13 of rotation.
- the wings 6 in Fig. 1 and 2 are shown in a position substantially parallel to the wind direction 5, whereas in Fig. 4 they are shown in a position generally at right angles to this wind direc ⁇ tion. During normal operation, the wings will, of course, be in some angular position between these two extremes.
- the other force in the couple mentioned is constituted by a forwardly directed force from the inner wing root fitting 17, transmitted to the wing base plate 12 and hence to the hub 7 through the in- ner pitch bearing 15 and the innermost part of the bea ⁇ ring shaft 8.
- the bearing shaft 8 will only be subjected to bending stresses in its outer ⁇ most and innermost ends, for which reason it may be rela ⁇ tively slim, although it must be able to withstand the "column loading" caused by the radially inwardly directed components of the tensional forces in the nose stay 21 and the two adjacent intermediate stays 22, and further, the shear forces at the two ends.
- the inner wing root fitting 17 serves to connect the in ⁇ nermost end of the wing root 14 to the inner pitch bea ⁇ ring 15, and an outer wing root fitting 24 serves in a corresponding manner to connect the outermost end of the wing root 14 to the outer pitch bearing 16.
- the wings are made of wood, such as laminat ⁇ ed wood with thick or thin laminae, but when using metal wings the wing root fittings 17 and 24 may in certain ca ⁇ ses be omitted, provided that the metal has the requisite strength.
- Both the nose stays 21 and the intermediate stays 22 may be adjustable in length in a manner not shown.
Abstract
La caractéristique nouvelle d'un rotor de moulin à vent avec des ailes (6) à pas ajustable, un étai (21) de nez pour chaque aile et des étais intermédiaires (22) entre les ailes, est le fait que les étais (21) de nez et les étais intermédiaires (22) sont fixés à l'extrémité extérieure d'un arbre de support (8) généralement radial dont l'extrémité intérieure est fixée au moyeu (7). Les ailes (6) sont soutenues à la partie antérieure de la jonction (14) de l'aile (vue dans le sens de rotation) sur un support intérieur (15) et extérieur (16) de rotation de l'aile ou du pas, respectivement, placés aux extrémités intérieure et extérieure de l'arbre de support (8). Cet agencement permet d'obtenir un support stable des ailes (6) même avec des arbres de support (8) relativement faibles. Dans un mode de réalisation, les étais intermédiaires (22) sont connectés à des bras radiaux rigides (23) sur le moyeu (7). Cet agencement soulage l'arbre de support (8) des forces tangentielles dues au vent et à la gravité. L'invention porte également sur un moulin à vent avec ce rotor.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK520084A DK520084A (da) | 1984-11-01 | 1984-11-01 | Vindmoellerotor med vridbare vinger og vindmoeller med en saadan rotor |
DK5200/84 | 1984-11-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1986002701A1 true WO1986002701A1 (fr) | 1986-05-09 |
Family
ID=8140363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DK1985/000102 WO1986002701A1 (fr) | 1984-11-01 | 1985-10-30 | Rotor de moulin a vent avec pales a pas ajustable; moulins a vent utilisant ce rotor |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0199799A1 (fr) |
AU (1) | AU5090885A (fr) |
DK (1) | DK520084A (fr) |
WO (1) | WO1986002701A1 (fr) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2065803A2 (es) * | 1992-02-24 | 1995-02-16 | Antoune Ivan Lahuerta | Turbina eolica pendular de potencia regulable por empuje axial. |
NL1015558C2 (nl) * | 2000-06-28 | 2002-01-08 | Stichting En Onderzoek Ct Nede | Blad van een windturbine. |
WO2008067083A2 (fr) * | 2006-11-27 | 2008-06-05 | Ning Liao | Ensemble d'aubes de turbine |
EP2112372A1 (fr) | 2008-04-21 | 2009-10-28 | Lm Glasfiber A/S | Éolienne à pales portées du côté sous le vent |
WO2010048958A2 (fr) * | 2008-10-30 | 2010-05-06 | Vestas Wind Systems A/S | Aérogénérateur comprenant un rotor à pales inclinées vers l'arrière |
WO2010048959A2 (fr) * | 2008-10-30 | 2010-05-06 | Vestas Wind Systems A/S | Aérogénérateur comprenant un support de pale étendu |
GB2479403A (en) * | 2010-04-09 | 2011-10-12 | Sway As | Wind turbine rotor and blade mounting arrangement for wind turbine |
WO2011124707A2 (fr) | 2010-04-09 | 2011-10-13 | Sway Turbine As | Rotor d'éolienne et éolienne |
US8729721B2 (en) | 2008-10-10 | 2014-05-20 | Sway Turbine As | Wind turbine rotor and wind turbine |
DE102012025127A1 (de) * | 2012-12-21 | 2014-06-26 | Voith Patent Gmbh | Wasserkraftwerk zur Ausnutzung der Energie geführter oder freier Wasserströme |
CN106917719A (zh) * | 2015-12-24 | 2017-07-04 | 罗天珍 | T型副翼联合自由环加固的风电风轮 |
US9822760B2 (en) | 2012-10-12 | 2017-11-21 | Joint Blade Rotor A/S | Joined blade wind turbine rotor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2825061A1 (de) * | 1978-06-08 | 1979-12-13 | Maschf Augsburg Nuernberg Ag | Windrad |
US4403916A (en) * | 1980-09-02 | 1983-09-13 | Chicago Province Of The Society Of Jesus | Wind turbines |
-
1984
- 1984-11-01 DK DK520084A patent/DK520084A/da not_active Application Discontinuation
-
1985
- 1985-10-30 AU AU50908/85A patent/AU5090885A/en not_active Abandoned
- 1985-10-30 EP EP85905607A patent/EP0199799A1/fr not_active Withdrawn
- 1985-10-30 WO PCT/DK1985/000102 patent/WO1986002701A1/fr unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2825061A1 (de) * | 1978-06-08 | 1979-12-13 | Maschf Augsburg Nuernberg Ag | Windrad |
US4403916A (en) * | 1980-09-02 | 1983-09-13 | Chicago Province Of The Society Of Jesus | Wind turbines |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2065803A2 (es) * | 1992-02-24 | 1995-02-16 | Antoune Ivan Lahuerta | Turbina eolica pendular de potencia regulable por empuje axial. |
NL1015558C2 (nl) * | 2000-06-28 | 2002-01-08 | Stichting En Onderzoek Ct Nede | Blad van een windturbine. |
WO2002008600A1 (fr) * | 2000-06-28 | 2002-01-31 | Stichting Energieonderzoek Centrum Nederland | Pale d'eolienne |
AU2001269615B2 (en) * | 2000-06-28 | 2004-12-02 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Blade of a wind turbine |
US6910867B2 (en) | 2000-06-28 | 2005-06-28 | Stichting Energieonderzoek Centrum Nederland | Blade of a wind turbine |
WO2008067083A3 (fr) * | 2006-11-27 | 2010-06-03 | Ning Liao | Ensemble d'aubes de turbine |
WO2008067083A2 (fr) * | 2006-11-27 | 2008-06-05 | Ning Liao | Ensemble d'aubes de turbine |
EP2112372A1 (fr) | 2008-04-21 | 2009-10-28 | Lm Glasfiber A/S | Éolienne à pales portées du côté sous le vent |
US9017034B2 (en) | 2008-04-21 | 2015-04-28 | Lm Glasfiber A/S | Upwind wind turbine with blades supported on the leeward side |
US8729721B2 (en) | 2008-10-10 | 2014-05-20 | Sway Turbine As | Wind turbine rotor and wind turbine |
WO2010048959A3 (fr) * | 2008-10-30 | 2010-12-23 | Vestas Wind Systems A/S | Aérogénérateur comprenant un support de pale étendu |
WO2010048958A3 (fr) * | 2008-10-30 | 2010-12-23 | Vestas Wind Systems A/S | Aérogénérateur comprenant un rotor à pales inclinées vers l'arrière |
WO2010048959A2 (fr) * | 2008-10-30 | 2010-05-06 | Vestas Wind Systems A/S | Aérogénérateur comprenant un support de pale étendu |
WO2010048958A2 (fr) * | 2008-10-30 | 2010-05-06 | Vestas Wind Systems A/S | Aérogénérateur comprenant un rotor à pales inclinées vers l'arrière |
GB2479403A (en) * | 2010-04-09 | 2011-10-12 | Sway As | Wind turbine rotor and blade mounting arrangement for wind turbine |
WO2011124707A2 (fr) | 2010-04-09 | 2011-10-13 | Sway Turbine As | Rotor d'éolienne et éolienne |
US8698336B2 (en) | 2010-04-09 | 2014-04-15 | Sway Turbine As | Wind turbine rotor and wind turbine |
US9822760B2 (en) | 2012-10-12 | 2017-11-21 | Joint Blade Rotor A/S | Joined blade wind turbine rotor |
DE102012025127A1 (de) * | 2012-12-21 | 2014-06-26 | Voith Patent Gmbh | Wasserkraftwerk zur Ausnutzung der Energie geführter oder freier Wasserströme |
CN106917719A (zh) * | 2015-12-24 | 2017-07-04 | 罗天珍 | T型副翼联合自由环加固的风电风轮 |
CN106917719B (zh) * | 2015-12-24 | 2021-03-09 | 罗天珍 | T型副翼联合自由环加固的风电风轮 |
Also Published As
Publication number | Publication date |
---|---|
EP0199799A1 (fr) | 1986-11-05 |
DK520084D0 (da) | 1984-11-01 |
AU5090885A (en) | 1986-05-15 |
DK520084A (da) | 1986-05-02 |
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