EP1505258A1 - Aube creuse de rotor pour la turbine d'un moteur à turbine à gaz - Google Patents
Aube creuse de rotor pour la turbine d'un moteur à turbine à gaz Download PDFInfo
- Publication number
- EP1505258A1 EP1505258A1 EP04291990A EP04291990A EP1505258A1 EP 1505258 A1 EP1505258 A1 EP 1505258A1 EP 04291990 A EP04291990 A EP 04291990A EP 04291990 A EP04291990 A EP 04291990A EP 1505258 A1 EP1505258 A1 EP 1505258A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wall
- face
- cavity
- flange
- reinforcement
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 claims abstract description 65
- 230000002787 reinforcement Effects 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 description 10
- 230000000930 thermomechanical effect Effects 0.000 description 7
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/20—Specially-shaped blade tips to seal space between tips and stator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
- F05D2260/202—Heat transfer, e.g. cooling by film cooling
Definitions
- the invention relates to a hollow rotor blade for the turbine of a gas turbine engine, in particular for a high type turbine pressure.
- the present invention relates to the realization of a hollow dawn of the type which includes a passage of internal cooling, an open cavity located at the free end of dawn and bounded by a bottom wall extending over the entire end of dawn and a rim extending between the leading edge and the edge of leakage along the extrados wall and the intrados wall, and channels cooling circuit connecting said internal cooling passage and the outer face of the intrados wall, said cooling channels being inclined relative to the intrados wall so that they open, at their outlet, on the outside of the pressure direction of the summit of said rim.
- Cooling channels of this type are intended for cool the free end of the dawn as they allow to repress a jet of cooling air from the internal cooling passage, in direction of the end of the dawn at the upper end of the outer face of the intrados wall.
- This air jet creates “pumping” a reduction in the temperature of the metal by absorption of calories at the heart of the metal wall, and a film of air from cooling that protects the end of the blades on the underside.
- the blades are hollow to allow their cooling by the air present in a internal cooling passage.
- US 6,231,307 and EP 0 816 636 disclose a such hollow blade further provided with cooling channels connecting the internal cooling passage and the outer face of the rim of the cavity at the intrados wall.
- cooling channels inclined connect the internal cooling passage and the outer face of the rim of the cavity at the level of the intrados wall being arranged (see Figure 2 of this document) so as to cross the bottom wall of the cavity and the rim of the cavity at the intrados wall, in passing through said cavity.
- This solution therefore requires a thickness of material important, whether for the bottom wall of the cavity or for the edge of the cavity, so as not to jeopardize the performance of thermomechanical resistance at the end of the blade.
- this limit solution very strongly the cooling airflow that reaches the top of the flange because most of the flow comes out of the passage of internal cooling through the first section of cooling and penetrates directly into the cavity without ending up on the outer face of the intrados wall.
- the present invention seeks to solve problems supra.
- the present invention aims to provide a hollow rotor blade for the turbine of a turbine engine to gas, of the type mentioned above, for cooling the end of dawn sufficiently to improve its reliability without reducing the aerodynamic and thermomechanical performance of dawn.
- said flange forms a thin wall and a material reinforcement is present between the rim and the wall bottom of the cavity along at least a portion of the intrados wall, the face of said reinforcement turned towards the cavity being substantially plane, whereby said flange is widened at its base adjacent to said bottom wall so that the cooling channels exit near the top of the ledge without altering the resistance mechanical end of the dawn.
- the cooling channels can thus lead to more near the top of the ledge without changing the distance between these channels of cooling and the bottom wall of the cavity.
- this reinforcing material generates an extra thickness in the part of the end of the dawn where the rim and the bottom wall are join, on the side of the interior of the cavity.
- Such a reinforcement is easy to implement without modify the manufacturing process of the dawn because it is sufficient to provide for this location a larger amount of metal as early as the stage of foundry, especially when designing the mold corresponding to this part of dawn.
- This solution also has the additional advantage of not not to weigh down the structure of the dawn in a sensible way.
- the face of said reinforcement turned towards the cavity shape, with the face of the bottom wall facing towards the cavity, a angle ( ⁇ ) between 170 and 100 °, preferably between 135 and 110 °.
- said angle ( ⁇ ) is substantially equal to 112 °.
- said face of the reinforcement turned towards the cavity is substantially parallel to the direction of the channels of cooling.
- This preferred embodiment makes it possible to obtain the best mechanical reinforcement with the minimum of material at the level of reinforcement.
- the distance (A) between the outlet of the cooling channels and said top of the rim is less than the distance (B) between the output of the cooling channels and said face of the reinforcement facing toward the cavity.
- This arrangement makes it possible to dispose the output of the channels of as close as possible to the top of the rim, which is cooled by very effective way.
- the distance (B) between the output of the cooling channels and said face of the reinforcement turned towards said cavity is at least equal, and particular exactly equal to the distance (C) separating the intersection (C1) between the inner face of the rim at the level of the extrados wall and the face of the bottom wall turned towards said cavity of the intersection (C2) between the outer face of the extrados wall and the face the bottom wall facing away from said cavity.
- FIG 1 is visible, in perspective, an example of a conventional hollow rotor blade 10 for a gas turbine.
- Air cooling system (not shown) has been flowing inside the dawn since the bottom of the foot 12 of the dawn in the radial direction (vertical) towards the free end 14 of the dawn (top in Figure 1), then this air of cooling escapes through an outlet to join the gas flow main.
- this cooling air circulates in a internal cooling passage located inside the dawn and which leads to the free end 14 of the dawn at piercing levels gateways 15.
- the body of the dawn is profiled so that it defines a wall of intrados 16 (on the left in all the figures) and a wall of extrados 18 (right on all the figures).
- the intrados wall 16 has a shape general concave and is the first face to the flow of hot gases, that is to say on the gas pressure side, while the extrados wall 18 is convex and then presents itself to the flow of hot gases, that is to say gas suction side.
- intrados 16 and extrados 18 meet at the location of the leading edge 20 and the location of the trailing edge 22 which extend radially between the free end 14 of the blade and the top of the foot 12 of dawn.
- the cooling passage internal 24 is delimited by the inner face 26a of a bottom wall 26 which extends over the entire free end 14 of the dawn, between the intrados wall 16 and the upper surface 18, so from the leading edge 20 to trailing edge 22.
- the intrados walls and extrados 16, 18 form the rim 28 of an open cavity 30 in the opposite direction to the internal cooling passage 24, either radially outward (upwards in all figures).
- this open cavity 30 is therefore delimited laterally by the inner face of this flange 28 and partly low by the outer face 26b of the bottom wall 26.
- the rim 28 thus forms a thin wall along the profile of the dawn that protects the free end 14 of the blade 10 of contact with the corresponding annular surface of the turbine casing.
- inclined cooling channels 32 pass through the intrados wall 16 to connect the internal cooling passage 24 to the outside face of the intrados wall 16.
- These cooling channels 32 are inclined so that they that they open towards the top 28a of the rim to cool as much as possible this vertex 28a, along the intrados wall 16.
- a reinforcement 34 of material is provided between the face of the flange 28 facing the cavity 30, along the wall of intrados 16, and the face 26b of the bottom wall 26 turned towards the cavity 30.
- This material reinforcement 34 is advantageously made in a to form a face 34a turned towards the cavity 30 which is substantially flat, so that the transition between the outer face 26b of the bottom wall 26 facing the cavity 30 and the inner face of the flange 28 is carried out in stages.
- the aforementioned distance B which must be maintained to ensure the thermomechanical resistance at the end of the blade becomes a distance B ' measured between the output of the cooling channels 32 (the point of reference being the axis of these channels) and said face 34a of the reinforcement 34.
- This reinforcement 34 is placed along at least part of the wall soffit.
- This reinforcement 34 may consist of a continuous strip or of a series of protuberances, provided that this reinforcement 34 of material is present in each transversal plane passing through a channel of cooling 32.
- the face of said reinforcement turned towards the cavity is substantially planar and shaped, with the face of the bottom wall turned towards the cavity, an angle ⁇ equal to 112 °.
- the flange 28 which advantageously forms a thin wall, therefore has a small thickness, ie less than 1.5 mm, of preferably less than 1 mm and preferably a thickness included between 0.3 and 0.8 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
- la figure 1 montre une vue en perspective d'une aube de rotor creuse pour turbine à gaz conventionnelle,
- la figure 2 montre en perspective, de manière agrandie, l'extrémité libre de l'aube de la figure 1,
- la figure 3 est une vue analogue à celle de la figure 2, après que le bord de fuite de l'aube ait été retiré par une coupe longitudinale,
- la figure 4 est une vue en coupe longitudinale selon la direction IV-IV de la figure 3, et
- la figure 5 est une vue analogue à celle de la figure 4 montrant les adaptations de l'aube selon la présente invention.
- hauteur du rebord 28 (du sommet 28a jusqu'à la surface extérieure 26b de la paroi de fond 26) :1 mm ;
- épaisseur du rebord 28 et des paroi d'intrados 16 et d'extrados 18 : 0,65 mm ;
- épaisseur constante de la paroi de fond 26 : 0,8 mm;
- diamètre des canaux de refroidissement 32 : 0,3 mm (on peut envisager un diamètre compris entre 0,25 mm et 0,35 mm) ;
- distance A : 1,7 mm ;
- distance B : 1,2 mm.
- au niveau de la cavité 30, le rebord 28, et en particulier son extrémité, présente une direction générale orthogonale à la paroi de fond 26 de la cavité, ou plus précisément à la face extérieure 26b de la paroi de fond 26 qui est sensiblement plane (et horizontale sur la figure 5) ;
- le renfort 34 est situé à la base du rebord 28 ; et
- les canaux de refroidissement 32 présentent une section constante sur toute leur longueur.
Claims (6)
- Aube (10) creuse de rotor pour la turbine d'un moteur à turbine à gaz comportant un passage de refroidissement interne (24), une cavité (30) ouverte située à l'extrémité libre (14) de l'aube (10) et délimitée par une paroi de fond (26) s'étendant sur toute l'extrémité (14) de l'aube et un rebord (28) s'étendant entre le bord d'attaque (20) et le bord de fuite (22) le long de la paroi d'extrados (18) et de la paroi d'intrados (16), et des canaux de refroidissement (32) reliant ledit passage de refroidissement interne (24) et la face extérieure de la paroi d'intrados (16), lesdits canaux de refroidissement (32) étant inclinés par rapport à la paroi d'intrados (16) de sorte qu'ils débouchent sur la face extérieure de la paroi d'intrados (16) en direction du sommet (28a) dudit rebord, caractérisée en ce que ledit rebord (28) forme une paroi mince et en ce qu'un renfort de matière (34) est présent entre le rebord (28) et la paroi de fond (26) de la cavité (30) le long d'au moins une partie la paroi d'intrados (16), la face (34a) dudit renfort (34) tournée en direction de la cavité (30) étant sensiblement plane, ce par quoi ledit rebord (28) est élargi à sa base de façon adjacente à ladite paroi de fond (26) de sorte que les canaux de refroidissement (32) débouchent à proximité du sommet (28a) du rebord (28) sans altérer la résistance mécanique de l'extrémité (14) de l'aube (10).
- Aube (10) de turbine selon la revendication 1, caractérisée en ce que la face (34a) dudit renfort (34) tournée en direction de la cavité (30) forme, avec la face (26b) de la paroi de fond (26) tournée vers la cavité (30), un angle (α) compris entre 170 et 100°, de préférence entre 135 et 110°.
- Aube de turbine (10) selon la revendication 2, caractérisée en ce que ledit angle (α) est sensiblement égal à 112°.
- Aube de turbine (10) selon l'une quelconque des revendications 2 et 3, caractérisée en ce que ladite face (34a) dudit renfort (34) est sensiblement parallèle à la direction des canaux de refroidissement (32).
- Aube de turbine (10) selon l'une quelconque des revendications précédentes, caractérisée en ce que la distance (A) entre la sortie des canaux de refroidissement (32) et ledit sommet (28a) du rebord (28) est inférieure à la distance (B') entre la sortie des canaux de refroidissement (32) et ladite face (34a) du renfort (34).
- Aube de turbine (10) selon l'une quelconque des revendications précédentes, caractérisée en ce que la distance (B') entre la sortie des canaux de refroidissement (32) et ladite face (34a) du renfort (34) est au moins égale à la distance (C) séparant l'intersection (C1) entre la face intérieure du rebord (28) au niveau de la paroi d'extrados (28) et la face (26b) de la paroi de fond (26) tournée en direction de ladite cavité (30) de l'intersection (C2) entre la face extérieure de la paroi d'extrados (18) et la face (26a) de la paroi de fond (26) tournée en direction opposée à ladite cavité (30).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0309688A FR2858650B1 (fr) | 2003-08-06 | 2003-08-06 | Aube creuse de rotor pour la turbine d'un moteur a turbine a gaz |
FR0309688 | 2003-08-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1505258A1 true EP1505258A1 (fr) | 2005-02-09 |
EP1505258B1 EP1505258B1 (fr) | 2008-01-02 |
Family
ID=33548310
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04291990A Expired - Lifetime EP1505258B1 (fr) | 2003-08-06 | 2004-08-04 | Aube creuse de rotor pour la turbine d'un moteur à turbine à gaz |
Country Status (9)
Country | Link |
---|---|
US (2) | US7192250B2 (fr) |
EP (1) | EP1505258B1 (fr) |
JP (1) | JP4184323B2 (fr) |
CA (1) | CA2478746C (fr) |
DE (1) | DE602004010965T2 (fr) |
ES (1) | ES2297354T3 (fr) |
FR (1) | FR2858650B1 (fr) |
RU (1) | RU2345226C2 (fr) |
UA (1) | UA82059C2 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013072610A1 (fr) | 2011-11-17 | 2013-05-23 | Snecma | Aube de turbine à gaz à décalage vers l'intrados des sections de tête et à canaux de refroidissement |
EP2775101A1 (fr) * | 2013-03-05 | 2014-09-10 | Mitsubishi Hitachi Power Systems, Ltd. | Aube rotorique de turbine |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2858650B1 (fr) * | 2003-08-06 | 2007-05-18 | Snecma Moteurs | Aube creuse de rotor pour la turbine d'un moteur a turbine a gaz |
US7704047B2 (en) * | 2006-11-21 | 2010-04-27 | Siemens Energy, Inc. | Cooling of turbine blade suction tip rail |
US7857588B2 (en) * | 2007-07-06 | 2010-12-28 | United Technologies Corporation | Reinforced airfoils |
US7922451B1 (en) | 2007-09-07 | 2011-04-12 | Florida Turbine Technologies, Inc. | Turbine blade with blade tip cooling passages |
FR2923524B1 (fr) * | 2007-11-12 | 2013-12-06 | Snecma | Aube metallique fabriquee par moulage et procede de fabrication de l'aube |
US8206108B2 (en) * | 2007-12-10 | 2012-06-26 | Honeywell International Inc. | Turbine blades and methods of manufacturing |
GB2461502B (en) * | 2008-06-30 | 2010-05-19 | Rolls Royce Plc | An aerofoil |
US8262357B2 (en) * | 2009-05-15 | 2012-09-11 | Siemens Energy, Inc. | Extended length holes for tip film and tip floor cooling |
JP2011163123A (ja) * | 2010-02-04 | 2011-08-25 | Ihi Corp | タービン動翼 |
US8777567B2 (en) | 2010-09-22 | 2014-07-15 | Honeywell International Inc. | Turbine blades, turbine assemblies, and methods of manufacturing turbine blades |
RU2529273C1 (ru) * | 2013-09-11 | 2014-09-27 | Открытое акционерное общество "Уфимское моторостроительное производственное объединение" ОАО "УМПО" | Рабочая лопатка турбины газотурбинного двигателя |
US9856739B2 (en) | 2013-09-18 | 2018-01-02 | Honeywell International Inc. | Turbine blades with tip portions having converging cooling holes |
US9816389B2 (en) | 2013-10-16 | 2017-11-14 | Honeywell International Inc. | Turbine rotor blades with tip portion parapet wall cavities |
US9879544B2 (en) | 2013-10-16 | 2018-01-30 | Honeywell International Inc. | Turbine rotor blades with improved tip portion cooling holes |
WO2016118135A1 (fr) * | 2015-01-22 | 2016-07-28 | Siemens Energy, Inc. | Système de refroidissement d'aube de turbine comprenant canal de refroidissement de bout aminci s'étendant dans le sens de la corde |
US9885243B2 (en) | 2015-10-27 | 2018-02-06 | General Electric Company | Turbine bucket having outlet path in shroud |
US10156145B2 (en) * | 2015-10-27 | 2018-12-18 | General Electric Company | Turbine bucket having cooling passageway |
US10508554B2 (en) | 2015-10-27 | 2019-12-17 | General Electric Company | Turbine bucket having outlet path in shroud |
US20180161853A1 (en) * | 2016-12-13 | 2018-06-14 | General Electric Company | Integrated casting core-shell structure with floating tip plenum |
US11015453B2 (en) | 2017-11-22 | 2021-05-25 | General Electric Company | Engine component with non-diffusing section |
CN110044668B (zh) * | 2018-01-17 | 2022-05-24 | 中国航发商用航空发动机有限责任公司 | 表征薄壁叶片铸件叶身性能的试样制造方法 |
US10787932B2 (en) | 2018-07-13 | 2020-09-29 | Honeywell International Inc. | Turbine blade with dust tolerant cooling system |
KR102466386B1 (ko) | 2020-09-25 | 2022-11-10 | 두산에너빌리티 주식회사 | 터빈 블레이드 및 이를 포함하는 터빈 |
CN112576316B (zh) * | 2020-11-16 | 2023-02-21 | 哈尔滨工业大学 | 涡轮叶片 |
US11608746B2 (en) | 2021-01-13 | 2023-03-21 | General Electric Company | Airfoils for gas turbine engines |
CN114018542B (zh) * | 2021-11-02 | 2023-07-21 | 中国航发沈阳发动机研究所 | 一种发动机流道内应用磁流体流动力学技术的试验装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2563571A1 (fr) * | 1984-04-27 | 1985-10-31 | Gen Electric | Bout d'aube perfectionne pour aube de rotor |
EP0816636A1 (fr) * | 1994-04-21 | 1998-01-07 | Mitsubishi Jukogyo Kabushiki Kaisha | Refroidissement des extrémités des aubes de turbine |
EP1270873A2 (fr) * | 2001-06-20 | 2003-01-02 | ALSTOM (Switzerland) Ltd | Aube de turbine à gaz |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US5660523A (en) * | 1992-02-03 | 1997-08-26 | General Electric Company | Turbine blade squealer tip peripheral end wall with cooling passage arrangement |
US5348446A (en) * | 1993-04-28 | 1994-09-20 | General Electric Company | Bimetallic turbine airfoil |
US6231307B1 (en) * | 1999-06-01 | 2001-05-15 | General Electric Company | Impingement cooled airfoil tip |
US6224337B1 (en) * | 1999-09-17 | 2001-05-01 | General Electric Company | Thermal barrier coated squealer tip cavity |
US6790005B2 (en) * | 2002-12-30 | 2004-09-14 | General Electric Company | Compound tip notched blade |
FR2858650B1 (fr) * | 2003-08-06 | 2007-05-18 | Snecma Moteurs | Aube creuse de rotor pour la turbine d'un moteur a turbine a gaz |
US6916150B2 (en) * | 2003-11-26 | 2005-07-12 | Siemens Westinghouse Power Corporation | Cooling system for a tip of a turbine blade |
-
2003
- 2003-08-06 FR FR0309688A patent/FR2858650B1/fr not_active Expired - Fee Related
-
2004
- 2004-08-02 CA CA2478746A patent/CA2478746C/fr not_active Expired - Lifetime
- 2004-08-03 US US10/909,360 patent/US7192250B2/en not_active Expired - Lifetime
- 2004-08-04 JP JP2004227531A patent/JP4184323B2/ja not_active Expired - Lifetime
- 2004-08-04 ES ES04291990T patent/ES2297354T3/es not_active Expired - Lifetime
- 2004-08-04 EP EP04291990A patent/EP1505258B1/fr not_active Expired - Lifetime
- 2004-08-04 UA UA20040806522A patent/UA82059C2/uk unknown
- 2004-08-04 DE DE602004010965T patent/DE602004010965T2/de not_active Expired - Lifetime
- 2004-08-05 RU RU2004123964/06A patent/RU2345226C2/ru active
-
2007
- 2007-01-22 US US11/625,395 patent/US7927072B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2563571A1 (fr) * | 1984-04-27 | 1985-10-31 | Gen Electric | Bout d'aube perfectionne pour aube de rotor |
EP0816636A1 (fr) * | 1994-04-21 | 1998-01-07 | Mitsubishi Jukogyo Kabushiki Kaisha | Refroidissement des extrémités des aubes de turbine |
EP1270873A2 (fr) * | 2001-06-20 | 2003-01-02 | ALSTOM (Switzerland) Ltd | Aube de turbine à gaz |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013072610A1 (fr) | 2011-11-17 | 2013-05-23 | Snecma | Aube de turbine à gaz à décalage vers l'intrados des sections de tête et à canaux de refroidissement |
CN103958834A (zh) * | 2011-11-17 | 2014-07-30 | 斯奈克玛 | 具有朝向压力侧偏移的尖端部且具有冷却通路的气体涡轮机叶片 |
EP2775101A1 (fr) * | 2013-03-05 | 2014-09-10 | Mitsubishi Hitachi Power Systems, Ltd. | Aube rotorique de turbine |
US9828859B2 (en) | 2013-03-05 | 2017-11-28 | Mitsubishi Hitachi Power Systems, Ltd. | Gas turbine blade with inner and outer cooling holes |
Also Published As
Publication number | Publication date |
---|---|
FR2858650B1 (fr) | 2007-05-18 |
RU2345226C2 (ru) | 2009-01-27 |
EP1505258B1 (fr) | 2008-01-02 |
RU2004123964A (ru) | 2006-01-27 |
UA82059C2 (uk) | 2008-03-11 |
ES2297354T3 (es) | 2008-05-01 |
CA2478746C (fr) | 2012-10-09 |
JP2005054799A (ja) | 2005-03-03 |
CA2478746A1 (fr) | 2005-02-06 |
US7927072B2 (en) | 2011-04-19 |
JP4184323B2 (ja) | 2008-11-19 |
US7192250B2 (en) | 2007-03-20 |
US20050063824A1 (en) | 2005-03-24 |
DE602004010965T2 (de) | 2009-01-02 |
US20100254823A1 (en) | 2010-10-07 |
DE602004010965D1 (de) | 2008-02-14 |
FR2858650A1 (fr) | 2005-02-11 |
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