EP2719867B1 - Structure de boîtier avec étanchéification et refroidissement améliorés - Google Patents
Structure de boîtier avec étanchéification et refroidissement améliorés Download PDFInfo
- Publication number
- EP2719867B1 EP2719867B1 EP12188313.6A EP12188313A EP2719867B1 EP 2719867 B1 EP2719867 B1 EP 2719867B1 EP 12188313 A EP12188313 A EP 12188313A EP 2719867 B1 EP2719867 B1 EP 2719867B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing structure
- housing wall
- web
- structure according
- holder
- 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.)
- Not-in-force
Links
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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/023—Transition ducts between combustor cans and first stage of the turbine in gas-turbine engines; their cooling or sealings
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/005—Sealing means between non relatively rotating elements
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/243—Flange connections; Bolting arrangements
-
- 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
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/15—Heat shield
Definitions
- the present invention relates to a housing structure for a turbomachine, in particular for a gas turbine or an aircraft engine, according to the preamble of claim 1, as in the document US 2002/0122 716 A1 is disclosed.
- turbomachines such as gas turbines or aircraft engines
- air is drawn along a flow channel, compressed, and combusted in a combustion chamber along with fuel, and then the combustion gases are discharged through the flow channel, thereby driving in a turbine rotors.
- the flow channel is circumferentially surrounded by a housing structure, wherein in the region of the combustion chamber and the following turbine, by the combustion gases very high temperatures prevail in the flow channel, so that surrounding the flow channel housing structure must be efficiently cooled in order to achieve that the lowest possible operating temperatures are present in order to use materials with lower requirements for high-temperature properties.
- cooling air is passed into the area of the outer housing structure in order to bring about heat dissipation.
- insulation and heat shields are used in such housing structures, which should protect the outer components from excessive temperatures, as from the document EP 1 384 858 A2 is known.
- the invention is based on the recognition that the existing in the prior art recesses in the field of heat shields or generally the presence of openings in the region of bushings in the radial direction causes inadmissible amount of hot gas can flow into the outer region of the housing structure.
- the invention therefore provides for placing a seal in the region in which the heat shield is interrupted, so that hot gas is prevented from flowing in the direction of the outer housing structure.
- it is proposed to project on webs or brackets, which are arranged on an inner housing wall and project at least partially outwardly in the radial direction, such to guide vane webs or Leitschaufelhalterept to provide broadening and form at these widening sealing surfaces against which heat shields sealingly so as to achieve a seal.
- Broadening is here understood to mean an enlargement of the cross section of a web or a holder in at least one direction, which extends in particular in a direction transverse to the radial direction, whereby a new cross-sectional reduction is preferably provided in addition to the cross-sectional widening, so that the widening only in a certain Section of the web or the bracket is present.
- At least one widening is provided on one or more circumferential walls around the flow channel, or on a corresponding support of the inner housing wall on opposite sides facing away from each other, on each of which a heat shield bears sealingly, so that both in the axial direction, and in Circumferential direction is a closed as possible barrier wall of heat shields for the separation of an outer part of the housing structure with outer cavities of an inner part of the housing structure is formed with internal cavities.
- the broadening on a web or a holder of the inner housing wall may in particular be made in one piece, so that additional mounting components and additional assembly costs can be saved.
- the broadening can be cast on a corresponding web or a holder.
- the inner and outer cavities may have corresponding cooling air inlet openings to allow for inflow of cooling air.
- the attached figure shows in a purely schematic way a partial sectional view of a housing structure according to the invention.
- the attached figure shows a section of a housing structure according to the invention with an outer housing wall 1, which can be designed segmented both in the axial direction and circulate around the limited of its flow channel.
- a guide blade 3 is arranged, which forms a part of the inner housing wall 2 in the form of a shroud.
- a guide blade web 4 is arranged projecting obliquely outwards, which can serve for example for fixing the guide vane 3 to the outer housing wall 1.
- heat shields are provided 6.7, which are also at least partially formed circumferentially around the flow channel and to shield the outer housing wall 1 from the temperatures in the flow channel.
- the heat shields 6 and 7 limit in the embodiment shown both inner cavities 9, as well as outer cavities 10th
- the outer cavities 10 are limited not only by the heat shields 6,7, but also by the outer housing wall 1 and the Leitschaufelsteg 4.
- cooling air openings 11 are partially provided, which allow to direct air from the environment into the outer cavities 10 in order to provide a cooling effect for the housing with respect to the high temperatures in the flow channel.
- the heat shields 6.7 continue to limit internal cavities 9, which are largely separated from the outer cavities 10 and sealed.
- a sealing surface 8 is provided, which is in contact with the heat shield 7 and 6, respectively, to seal the inner cavities 8 and outer cavities 10.
- the inner cavities 9 are spaced from the outer housing wall 1 and the outer cavities 10 are spaced from the inner housing wall 2, so that the inner cavities 9 serve as a temperature buffer, while the outer cavities 10 can be used to guide cooling air.
- the outer housing wall 1 and the components in the region of the outer housing wall 1 can be effectively cooled and the temperature load can be lowered, so that materials can be used with lower requirements for temperature resistance.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Claims (9)
- Structure de carter pour une turbomachine, en particulier une turbine à gaz ou un groupe motopropulseur, comportant une paroi de carter extérieure (1) et une paroi de carter intérieure (2), dans laquelle la paroi intérieure et la paroi extérieure enserrent un canal d'écoulement de la turbomachine en formant un cercle et sont distantes l'une de l'autre dans le sens radial par rapport au canal d'écoulement, dans laquelle au moins un bouclier thermique (6, 7) est disposé entre la paroi intérieure et la paroi extérieure, et une entretoise (4) au moins en partie en saillie dans le sens radial ou une attache au moins en partie en saillie dans le sens radial sont disposées sur la paroi intérieure, l'entretoise ou l'attache présentant, au moins d'un côté, un élargissement (5) comprenant une surface d'étanchéité (8) contre laquelle le bouclier thermique est appuyé de façon étanche,
caractérisée en ce que
l'entretoise ou l'attache présente, sur chacun des côtés se faisant face ou opposés, au moins un élargissement (5) comprenant au moins une surface d'étanchéité contre laquelle un bouclier thermique est appuyé de façon étanche. - Structure de carter selon la revendication 1,
caractérisée en ce que
l'élargissement (5) est disposé d'un seul bloc sur l'entretoise ou l'attache, en particulier coulé. - Structure de carter selon l'une quelconque des revendications précédentes,
caractérisée en ce que
le bouclier thermique (6, 7) délimite, avec son côté extérieur radial, au moins une cavité extérieure (10) distante de la paroi de carter intérieure. - Structure de carter selon l'une quelconque des revendication précédentes,
caractérisée en ce que
le bouclier thermique (6, 7) délimite, avec son côté intérieur radial, au moins une cavité intérieure (9) distante de la paroi de carter extérieure. - Structure de carter selon l'une quelconque des revendications 3 ou 4,
caractérisée en ce que
la délimitation de la cavité intérieure et/ou extérieure englobe la surface d'étanchéité. - Structure de carter selon l'une quelconque des revendications 3 à 5,
caractérisée en ce que
la cavité intérieure et la cavité extérieure (9, 10) sont séparées l'une de l'autre. - Structure de carter selon l'une quelconque des revendications 3 à 6,
caractérisée en ce que
la cavité extérieure présente au moins une ouverture d'arrivée d'air frais (11). - Structure de carter selon l'une quelconque des revendications précédentes,
caractérisée en ce que
La paroi de carter intérieure est constituée au moins d'une partie d'une aube directrice (3) et l'entretoise est une entretoise d'aube directrice ou une d'entretoise de couronne directrice ou l'attache une suspension de stator. - Turbomachine avec une structure de carter selon l'une quelconque des revendications précédentes.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES12188313.6T ES2531468T3 (es) | 2012-10-12 | 2012-10-12 | Estructura de caja con obturación y refrigeración mejoradas |
EP12188313.6A EP2719867B1 (fr) | 2012-10-12 | 2012-10-12 | Structure de boîtier avec étanchéification et refroidissement améliorés |
US14/052,338 US9416672B2 (en) | 2012-10-12 | 2013-10-11 | Housing structure with improved seal and cooling |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12188313.6A EP2719867B1 (fr) | 2012-10-12 | 2012-10-12 | Structure de boîtier avec étanchéification et refroidissement améliorés |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2719867A1 EP2719867A1 (fr) | 2014-04-16 |
EP2719867B1 true EP2719867B1 (fr) | 2015-01-21 |
Family
ID=47115341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12188313.6A Not-in-force EP2719867B1 (fr) | 2012-10-12 | 2012-10-12 | Structure de boîtier avec étanchéification et refroidissement améliorés |
Country Status (3)
Country | Link |
---|---|
US (1) | US9416672B2 (fr) |
EP (1) | EP2719867B1 (fr) |
ES (1) | ES2531468T3 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10557364B2 (en) * | 2016-11-22 | 2020-02-11 | United Technologies Corporation | Two pieces stator inner shroud |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2800797B1 (fr) | 1999-11-10 | 2001-12-07 | Snecma | Assemblage d'un anneau bordant une turbine a la structure de turbine |
FR2803871B1 (fr) * | 2000-01-13 | 2002-06-07 | Snecma Moteurs | Agencement de reglage de diametre d'un stator de turbine a gaz |
US6431820B1 (en) * | 2001-02-28 | 2002-08-13 | General Electric Company | Methods and apparatus for cooling gas turbine engine blade tips |
US6902371B2 (en) * | 2002-07-26 | 2005-06-07 | General Electric Company | Internal low pressure turbine case cooling |
FR2899281B1 (fr) * | 2006-03-30 | 2012-08-10 | Snecma | Dispositif de refroidissement d'un carter de turbine d'une turbomachine |
GB0619426D0 (en) * | 2006-10-03 | 2006-11-08 | Rolls Royce Plc | A vane arrangement |
FR2968030B1 (fr) * | 2010-11-30 | 2013-01-11 | Snecma | Turbine basse-pression de turbomachine d'aeronef, comprenant un distributeur sectorise |
US8876458B2 (en) * | 2011-01-25 | 2014-11-04 | United Technologies Corporation | Blade outer air seal assembly and support |
US8985944B2 (en) * | 2011-03-30 | 2015-03-24 | General Electric Company | Continuous ring composite turbine shroud |
-
2012
- 2012-10-12 EP EP12188313.6A patent/EP2719867B1/fr not_active Not-in-force
- 2012-10-12 ES ES12188313.6T patent/ES2531468T3/es active Active
-
2013
- 2013-10-11 US US14/052,338 patent/US9416672B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20140102107A1 (en) | 2014-04-17 |
ES2531468T3 (es) | 2015-03-16 |
EP2719867A1 (fr) | 2014-04-16 |
US9416672B2 (en) | 2016-08-16 |
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