EP3167184A1 - Rotor für drehmaschine - Google Patents
Rotor für drehmaschineInfo
- Publication number
- EP3167184A1 EP3167184A1 EP15735681.7A EP15735681A EP3167184A1 EP 3167184 A1 EP3167184 A1 EP 3167184A1 EP 15735681 A EP15735681 A EP 15735681A EP 3167184 A1 EP3167184 A1 EP 3167184A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- axis
- leading edge
- rotor
- trailing edge
- 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- Withdrawn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
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 22
- 239000012530 fluid Substances 0.000 claims description 25
- 230000007423 decrease Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 description 2
- UJCHIZDEQZMODR-BYPYZUCNSA-N (2r)-2-acetamido-3-sulfanylpropanamide Chemical compound CC(=O)N[C@@H](CS)C(N)=O UJCHIZDEQZMODR-BYPYZUCNSA-N 0.000 description 1
- 241001669680 Dormitator maculatus Species 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 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
- F03D3/005—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor the axis being vertical
-
- 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
-
- 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 present invention relates to a rotor for a rotating machine such as a tidal turbine or a wind turbine, and a rotary machine comprising such a rotor.
- Darrieus type rotors which include a shaft with a vertical axis of rotation and a certain number of blades equidistant from the axis of rotation, fixed to the shaft and distributed angularly one after the other around the shaft. .
- the blades have a relatively small angular coverage and are spaced apart which creates gaps between two consecutive blades. Due to these empty spaces, the rotation of the rotor under the action of a moving fluid is effected by blows which can, in time, damage the rotor elements and more particularly the rolling members.
- An object of the present invention is to provide a rotor for a rotating machine which does not have the drawbacks of the prior art and which in particular makes it possible to obtain the suppression of torque fluctuations.
- a rotor for a rotating machine disposed in a moving fluid said rotor comprising:
- each assembly has an inner blade disposed closest to the shaft, an outer blade disposed furthest from the shaft and an intermediate blade disposed between the inner blade and the outer blade,
- each blade has in the plane perpendicular to the axis, a wing profile whose intrados is oriented towards the axis,
- each blade has a leading edge and a trailing edge and the distance between the axis and the leading edge is greater than the distance between the axis and the trailing edge, the leading edge of the inner blade is downstream with respect to an upstream line passing through the axis and the leading edge of the intermediate blade and the leading edge of the outer blade is upstream with respect to the upstream line, and
- the trailing edge of the inner blade is downstream with respect to a downstream line passing through the axis and the trailing edge of the intermediate blade and the trailing edge of the outer blade is upstream with respect to the downstream line .
- the orientation of each blade is such that, when the blade is moving in the same direction as the fluid flow, the resultant of the forces exerted by the fluid flow on the blade does not pass through the axis, and the orientation of each blade is such that, when the blade is moving in the opposite direction to that of the fluid flow, the resultant forces exerted by the flow of fluid on the blade passes through the axis.
- the difference between the distance between the axis and the leading edge and the distance between the axis and the trailing edge decreases from the inner blade to the outer blade.
- the angle between the straight line passing through the axis and the leading edge of the outer blade and the straight line passing through the axis and the trailing edge of the inner blade is of the order of 97.3 ° .
- the angle between the straight line passing through the axis and the leading edge of the inner blade and the upstream straight line is at least 8.9 °, and the angle between the straight line passing through the axis and by the leading edge of the outer blade and the upstream straight is at least 14.7 °.
- the distance between the axis and the leading edge of the inner blade is of the order of 104% of D
- the distance between the axis and the leading edge of the blade intermediate is of the order of 133% of D
- the distance between the axis and the leading edge of the outer blade is of the order of 163% of D.
- the plane containing the axis and the leading edge of the inner blade and the plane containing the leading edge of the inner blade and the trailing edge of the inner blade form an angle of the order of 38, 5 °
- the plane containing the axis and the leading edge of the intermediate blade and the plane containing the leading edge of the intermediate blade and the trailing edge of the intermediate blade form an angle of the order of 52 , 5 °
- the plane containing the axis and the leading edge of the outer blade and the plane containing the leading edge of the outer blade and the trailing edge of the outer blade form an angle of the order 60.2 °.
- the invention also proposes a rotating machine comprising an electric generator comprising a generator rotor and a generator stator and a rotor according to one of the preceding variants rotating the generator rotor.
- FIG. unique represents a top view of a rotor according to the invention.
- Fig. unique shows a rotor 100 for a rotating machine type tidal or wind turbine.
- the rotating machine also comprises an electric generator comprising a generator rotor and a generator stator and wherein the generator rotor is rotated by the rotor 100.
- the rotor 100 has a shaft 102 rotatable about its axis 104.
- the rotor 100 is immersed in a moving fluid represented by the arrows 10 which drives the rotor 100 in rotation.
- the fluid is typically water or air.
- the axis 104 can take different orientations and be placed horizontally, vertically or diagonally in the fluid flow.
- the rotor 100 has at least three sets of blades 106a-c regularly distributed angularly about the shaft 102 and each assembly 106a-c is fixed to the shaft 102.
- Each assembly 106a-c has an inner blade 108a, an intermediate blade 108b and an outer blade 108c.
- the following description is applied to the first set of blades 106a but it applies in the same way to the other sets 106b-c.
- the inner blade 108a is disposed closest to the shaft 102
- the outer blade 108c is disposed farthest from the shaft 102
- the intermediate blade 108b is disposed between the inner blade 108a and the outer blade 108c.
- Each blade 108a-c has in the plane perpendicular to the axis 104, a wing profile whose intrados is oriented towards the axis 104 and each blade 108a-c extends along a certain length along the axis. axis 104.
- the length of the shaft 102 and the blades 108a-c determines the elongation of the rotor and is defined with respect to the nature of the fluid (density, speed, etc.).
- Each profile is here a profile of the Eiffel type, the hollow of each blade 108a c is 10% of the value of the rope of the blade 108a-c. But it is possible to use blades 108a-c of different profile such as NACA type.
- the centers of curvature of the three blades 108a-c are not confused with each other or with the center of the shaft 102. In other words, the shaft 102 and the blades 108a-c are not concentric.
- Each blade 108a-c has a leading edge 110a-c through which the fluid drives said blade 108a-c to rotate, and a trailing edge 112a-c through which the fluid escapes.
- each blade 108a-c In the plane perpendicular to the axis 104, and for each blade 108a-c, the distance between the axis 104 and the leading edge 1 10a-c is greater than the distance between the axis 104 and the trailing edge 112a-c. Thus, each blade 108a-c has an orientation that tends to tighten the trailing edge 112a-c against the shaft 102.
- the blades 108a-c overlap.
- the leading edge 110a of the inner blade 108a is downstream with respect to the upstream line 114 passing through the axis 104 and the leading edge 110b of the intermediate blade 108b and the leading edge 110c of the blade 108c is upstream with respect to the upstream line 114.
- the angle between the straight line passing through the axis 104 and the leading edge 110a of the inner blade 108a and the upstream straight line 114 is at least 8.9 °, and the angle between the line passing through the axis 104 and the leading edge 110c of the outer blade 108c and the upstream line 114 is at least 14.7 °.
- the trailing edge 112a of the inner blade 108a is downstream with respect to the downstream line 116 passing through the axis 104 and the trailing edge 112b of the intermediate blade 108b and the trailing edge 112c of the outer blade 108c is upstream with respect to the downstream line 116.
- Such a rotor makes it possible to have a greater angular coverage which limits the fluctuations of the torque during the rotation of the rotor 100.
- the difference between the distance between the axis 104 and the leading edge 110a-c and the distance between the axis 104 and the trailing edge 112a-c decreases by inner blade 108a to outer blade 108c.
- the blades 108a-c are close to the concentricity with the axis 104.
- the angle between the straight line passing through the axis 104 and the leading edge 110c of the outer blade 108c and the straight line passing through the axis 104 and the trailing edge of the inner blade 108a is the order of 97.3 °.
- the angle of leakage which is the angle between the straight line passing through the axis 104 and the trailing edge of the inner blade 108a of an assembly 106a, and the straight line passing through the axis 104 and the leading edge 110c of the outer blade 108c of the assembly 106c in the direction of rotation, is then of the order of 22.7 °.
- Such an implantation makes it possible to obtain a ratio of 81% between the angular aperture covered by the blades 108a-c and 360 °, which eliminates the fluctuations in the torque and preserves the components of the rotor 100 during rotation.
- the reliability of the rotor 100 is then increased and its maintenance cost is reduced accordingly.
- the flow of fluid acts on the inside of the blades 108a-c to rotate the rotor 100.
- the diameter of the shaft 102 determines the rope of the blades 108a-c.
- the shaft 104 then plays the role of an obstacle that slows downstream fluid flow.
- the rope of each blade 108a-c has the formula:
- Rope 108% of D, where D is the diameter of the shaft 102.
- the minimum distance between the blades 108a-c between them or between the inner blade 108a and the shaft 102 must be greater than 20% of the rope of the blade 108a-c.
- each blade 108a-c is such that, when the blade 108a-c is moving in the same direction as the fluid flow, the resultant forces exerted by the fluid flow on the blade 108a-c passes. not by the axis 104, thus creating a torque promoting rotation.
- the orientation of each blade 108a-c is such that, when the blade 108a-c is moving in the opposite direction to that of the fluid flow, the resultant forces exerted by the fluid flow on the blade 108a-c passes by the axis 104, thus creating no torque.
- the distance between the axis 104 and the leading edge 110a of the inner blade 108a is of the order of 104% of D
- the distance between the axis 104 and the leading edge 110b of the intermediate blade 108b is of the order of 133% of D
- the distance between the axis 104 and the leading edge 110c of the outer blade 108c is of the order of 163% of D.
- the plane containing the axis 104 and the leading edge 110a of the inner blade 108a and the plane containing the leading edge 110a of the inner blade 108a and the trailing edge 112a of the inner blade 108a form an angle of the order of 38.5 °
- the plane containing the axis 104 and the leading edge 110b of the intermediate blade 108b and the plane containing the leading edge 110b of the intermediate blade 108b and the trailing edge 1 12b of the intermediate blade 108b form an angle of the order of 52.5 °
- the plane containing the axis 104 and the leading edge 1 10c of the outer blade 108c and the plane containing the leading edge 110c of the outer blade 108c and the trailing edge 112c of the outer blade 108c form an angle of the order of 60.2 °.
- each blade 108a-c is ensured by plates 118, which take the form of plates perpendicular to the axis 104, which are fixed to the shaft 102 which extend radially relative to the shaft 102 and on which blades 108a-c are fixed.
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1456706A FR3023580B1 (fr) | 2014-07-11 | 2014-07-11 | Rotor pour une machine tournante |
PCT/EP2015/065562 WO2016005430A1 (fr) | 2014-07-11 | 2015-07-08 | Rotor pour une machine tournante |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3167184A1 true EP3167184A1 (de) | 2017-05-17 |
Family
ID=51659864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15735681.7A Withdrawn EP3167184A1 (de) | 2014-07-11 | 2015-07-08 | Rotor für drehmaschine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3167184A1 (de) |
FR (1) | FR3023580B1 (de) |
WO (1) | WO2016005430A1 (de) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4350900A (en) * | 1980-11-10 | 1982-09-21 | Baughman Harold E | Wind energy machine |
DE10105570B4 (de) * | 2001-02-06 | 2005-03-24 | Althaus, Wolfgang, Dr.-Ing. | Windkraftmaschine |
WO2011021733A1 (ko) * | 2009-08-20 | 2011-02-24 | Tak Seung-Ho | 가변 풍속 터빈형 복합 풍력발전 장치 및 방법 |
US8672608B2 (en) * | 2010-11-15 | 2014-03-18 | Chuy-Nan Chio | Tower type vertical axle windmill |
-
2014
- 2014-07-11 FR FR1456706A patent/FR3023580B1/fr not_active Expired - Fee Related
-
2015
- 2015-07-08 WO PCT/EP2015/065562 patent/WO2016005430A1/fr active Application Filing
- 2015-07-08 EP EP15735681.7A patent/EP3167184A1/de not_active Withdrawn
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2016005430A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR3023580B1 (fr) | 2016-08-12 |
WO2016005430A1 (fr) | 2016-01-14 |
FR3023580A1 (fr) | 2016-01-15 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 20170208 |
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AK | Designated contracting states |
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AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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INTG | Intention to grant announced |
Effective date: 20180412 |
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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 |
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18D | Application deemed to be withdrawn |
Effective date: 20180823 |