EP2145102A2 - Bras de support destiné aux pales de turbines éoliennes présentant un axe de rotation vertical - Google Patents

Bras de support destiné aux pales de turbines éoliennes présentant un axe de rotation vertical

Info

Publication number
EP2145102A2
EP2145102A2 EP08758531A EP08758531A EP2145102A2 EP 2145102 A2 EP2145102 A2 EP 2145102A2 EP 08758531 A EP08758531 A EP 08758531A EP 08758531 A EP08758531 A EP 08758531A EP 2145102 A2 EP2145102 A2 EP 2145102A2
Authority
EP
European Patent Office
Prior art keywords
arm
cross
section
convex surface
wing
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Withdrawn
Application number
EP08758531A
Other languages
German (de)
English (en)
Inventor
Lucio Zancai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ropatec Srl
Original Assignee
Ropatec Srl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ropatec Srl filed Critical Ropatec Srl
Publication of EP2145102A2 publication Critical patent/EP2145102A2/fr
Withdrawn legal-status Critical Current

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
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
    • 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
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/062—Rotors characterised by their construction elements
    • F03D3/064—Fixing wind engaging parts to rest of 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
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • F05B2240/214—Rotors for wind turbines with vertical axis of the Musgrove or "H"-type
    • 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
    • F05B2240/301—Cross-section characteristics
    • 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
    • F05B2250/70—Shape
    • F05B2250/71—Shape curved
    • F05B2250/711—Shape curved convex
    • 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
    • F05B2250/70—Shape
    • F05B2250/71—Shape curved
    • F05B2250/712—Shape curved concave
    • 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
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

Definitions

  • the invention proposes an arm having the cross-section of a turbine blade, e.g. gas turbine blade type, which has a "front" in the direction of rotation, with convex aerodynamic, eg circular arc, parabolic course, with nose cone-shaped cross section or a cross section corresponding to the region of the leading edge of a wing profile, with the curve tip, or the apex , arranged in the direction of rotation and from a "rear part" with concave surface which is also substantially circular arc or parabolic.
  • a turbine blade e.g. gas turbine blade type
  • the points of contact between the front convex and the rear concave area are substantially in the range of the maximum vertical dimension of the cross section, whereby a sudden interruption of the profile is achieved with the formation of two trailing edges for the airflow passing over the front convex surface.
  • the cross-section is substantially symmetrical with respect to a horizontal axis, it may be constant along the entire longitudinal extension of the arm or may vary, e.g. in the vicinity of the hub, providing a more rounded tip and a less deep concave surface as compared to the cross section in the area near the wing where the rotational speed is greater;
  • the cross section can be adapted to the different operating conditions in order to further improve the efficiency.
  • the most unfavorable position is reached when the arm occupies 90 ° to the direction of the acting according to horizontal planes, wind.
  • the air is deflected by the convex profile of the front surface of the arm which offers as little resistance as possible.
  • Fig. 1 shows a perspective view of a wind turbine with a vertical axis of rotation and three wings, each of which is supported by arms according to the invention which are fastened by means of molded, the wings comprehensive, temple.
  • FIG. 2 shows a perspective representation of a stump of a support arm attached to a wing according to the invention.
  • Fig. 3 shows the cross section of a support arm according to the invention with an indication of the wind flow and the direction of rotation during the phase with effect of the wind on the rear concave surface.
  • Fig. 4 shows the same in Fig. 3 shown cross-section of the support arm according to the invention with an indication of the wind flow and the direction of rotation during the phase with effect of the wind on the front convex surface.

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

La présente invention concerne un bras de support destiné aux pales de turbines éoliennes présentant un axe de rotation vertical qui est disposé de façon sensiblement radiale entre le moyeu (1) ou l'organe d'appui de la turbine et chacune des pales (3) espacées par rapport au moyeu. Selon l'invention, la section transversale (2s) du bras est sensiblement symétrique par rapport à un axe horizontal et est formée, par rapport au sens de rotation (R) du rotor, par une surface avant convexe (2a) et une surface arrière concave (2b), et la section transversale (2s), qu'il s'agisse de la surface concave ou de la surface convexe, a la forme d'un arc de cercle, d'une parabole, d'un cône de nez ou d'un bord d'attaque d'un profil de pale.
EP08758531A 2007-05-17 2008-05-15 Bras de support destiné aux pales de turbines éoliennes présentant un axe de rotation vertical Withdrawn EP2145102A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBZ20070021 ITBZ20070021A1 (it) 2007-05-17 2007-05-17 Braccio di supporto per ali di turbine eoliche ad asse di rotazione verticale
PCT/EP2008/003889 WO2008141763A2 (fr) 2007-05-17 2008-05-15 Bras de support destiné aux pales de turbines éoliennes présentant un axe de rotation vertical

Publications (1)

Publication Number Publication Date
EP2145102A2 true EP2145102A2 (fr) 2010-01-20

Family

ID=40032213

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08758531A Withdrawn EP2145102A2 (fr) 2007-05-17 2008-05-15 Bras de support destiné aux pales de turbines éoliennes présentant un axe de rotation vertical

Country Status (3)

Country Link
EP (1) EP2145102A2 (fr)
IT (1) ITBZ20070021A1 (fr)
WO (1) WO2008141763A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216382A (zh) * 2012-01-20 2013-07-24 台达电子工业股份有限公司 垂直轴风力发电机及其叶臂

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1391054B1 (it) * 2008-09-26 2011-11-18 Tozzi Nord S R L Disposizione di fissaggio di elementi portanti a bracci di supporto in rotori di turbine eoliche ad asse verticale e relativo rotore eolico
WO2010071850A2 (fr) * 2008-12-19 2010-06-24 Higher Dimension Materials, Inc. Éolienne à axe vertical à multiples rotors
US8648483B2 (en) 2009-03-12 2014-02-11 Eastern Wind Power Vertical axis wind turbine system
US8030792B2 (en) 2009-03-12 2011-10-04 Eastern Wind Power Vertical axis wind turbine system
CN201486753U (zh) * 2009-06-26 2010-05-26 北京希翼新兴能源科技有限公司 垂直轴复合式风轮机
IT1395071B1 (it) 2009-08-11 2012-09-05 Enatek S R L Alternatore elettrico del tipo per generatori eolici
CN201865840U (zh) * 2009-09-18 2011-06-15 北京希翼新兴能源科技有限公司 垂直轴风力发电机风叶及其风轮
US7988413B2 (en) 2010-04-23 2011-08-02 Eastern Wind Power Vertical axis wind turbine
CN101943108B (zh) * 2010-09-13 2012-07-11 青海风发科技发展有限公司 一种垂直轴风力机的自起动装置
FR2968044B1 (fr) * 2010-11-29 2012-12-28 Electricite De France Hydrolienne a flux transverse a faible trainee
CN102128130A (zh) * 2011-04-13 2011-07-20 天津理工大学 一种阻力型垂直轴风力机
FR2978502B1 (fr) * 2011-07-25 2013-08-30 Electricite De France Turbine hydraulique a trainee en bout d'aile reduite
CN102926925A (zh) * 2011-08-10 2013-02-13 宜兴宜友科技有限公司 一种垂直轴风力发电机叶片
ITPD20120127A1 (it) * 2012-04-23 2013-10-24 Vortex Energy S R L Struttura di turbina eolica o idraulica ad asse verticale
NL2009286C2 (en) * 2012-08-06 2014-02-10 Stichting Energie Swallow tail airfoil.
US11136958B2 (en) 2012-08-06 2021-10-05 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Swallow tail airfoil
WO2017111756A1 (fr) 2015-12-23 2017-06-29 Okan Universitesi Éolienne à pales horizontales et axe vertical à faible frottement présentant un haut rendement
JP2023546385A (ja) * 2020-10-19 2023-11-02 シートビルル アクティエボラーグ 垂直軸風力タービンおよびブレードと支柱の結合方法

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US979098A (en) 1910-02-14 1910-12-20 John Scheubeck Wind-motor.
US4355958A (en) * 1981-09-18 1982-10-26 Cornick Roy C Rotary impeller for fluid driven machine
DE8615467U1 (de) 1986-06-07 1986-08-14 Möller, Karl-Friedrich, 6054 Rodgau Profilwindrad
DE20112763U1 (de) 2001-08-08 2002-03-14 Itam Umweltanlagen Gmbh Anlaufhilfe für H-Darrieus Windkraftanlagen durch eine spezielle Gestaltung des Rotorblattträgers
JP2005282540A (ja) * 2004-03-30 2005-10-13 Daiwa House Ind Co Ltd 揚力型垂直軸風車を用いた風力発電機における回転数制御機構

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008141763A2 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216382A (zh) * 2012-01-20 2013-07-24 台达电子工业股份有限公司 垂直轴风力发电机及其叶臂

Also Published As

Publication number Publication date
WO2008141763A3 (fr) 2009-08-06
ITBZ20070021A1 (it) 2008-11-18
WO2008141763A2 (fr) 2008-11-27

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