EP1215364A2 - Vorrichtung zur Kühlung eines Deckbandes einer Gasturbinenschaufel - Google Patents
Vorrichtung zur Kühlung eines Deckbandes einer Gasturbinenschaufel Download PDFInfo
- Publication number
- EP1215364A2 EP1215364A2 EP01128572A EP01128572A EP1215364A2 EP 1215364 A2 EP1215364 A2 EP 1215364A2 EP 01128572 A EP01128572 A EP 01128572A EP 01128572 A EP01128572 A EP 01128572A EP 1215364 A2 EP1215364 A2 EP 1215364A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling
- plate
- baffle
- cover
- cover plate
- 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
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
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/08—Heating, heat-insulating or cooling means
- F01D5/081—Cooling fluid being directed on the side of the rotor disc or at the roots of the 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
-
- 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
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
- F01D5/187—Convection cooling
-
- 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
- F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
-
- 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
- F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
- F01D5/225—Blade-to-blade connections, e.g. for damping vibrations by shrouding
-
- 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
- F05D2240/80—Platforms for stationary or moving blades
- F05D2240/81—Cooled platforms
-
- 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
- F05D2250/00—Geometry
- F05D2250/10—Two-dimensional
- F05D2250/19—Two-dimensional machined; miscellaneous
- F05D2250/191—Two-dimensional machined; miscellaneous perforated
Definitions
- the invention relates to a cooling device for a shroud Gas turbine blade, with a cooling channel system provided in the shroud, which has cooling channels open on one side radially to the gas turbine blade and with a Cover plate is complete.
- one provided with a cover tape or outer platform Gas turbine blade for cooling purposes inside the shroud Hollow channel system that is used for cooling air distribution and guidance within the Cover band provides the cooling air flow deflecting surface structures.
- Gas turbine blade is the shroud area provided with the flow channels radially directed open on one side.
- cover plate Flow area for the cooling air within the shroud sealed gas-tight, by the cover plate flush with the radially directed top of the Shroud. This is generally done using high temperature soldering.
- Such a joint connection between a cover tape 1 and a cover plate 2 is shown in a partial cross-sectional view according to FIG.
- the cover plate 2 is via a high-temperature soldered seam 3 with the peripheral edge of the cover tape 1 features.
- the cooling channels 4, which are formed radially on one side and open Cooling air baffles 5 are limited by the cover plate 2 radially sealed gastight. Not in the partial cross-sectional view according to FIG. 2 the inlet and outlet directed radially inside the turbine blade are shown Outflow cooling channels through which cooling air is fed into and removed from the shroud area is, the cooling air in the cooling channels 4 cools the turbine blade tip.
- the invention has for its object a cooling device for a shroud a gas turbine blade, with one provided in the shroud Cooling channel system, the cooling channels open on one side radially to the gas turbine blade has and is completed with a cover plate, with a view to an improved To further develop the cooling effect, so that the thermally and mechanically heavily loaded Cover band area of a gas turbine blade can be cooled better.
- the too Measures taken should be as low in construction as possible
- additional technical effort also requires a significantly better cooling effect cause than is the case with the previously known shroud cooling arrangements.
- a cooling device according to the preamble of claim 1 further developed such that between the cover plate and the one-sided open Cooling channels a baffle cooling plate is provided such that the baffle cooling plate the cooling ducts, which are open on one side, is pressed against them in a force-locking manner and encloses a space with the cover plate.
- cooling air enters through narrowed flow openings the baffle cooling plate through which the cooling air is locally accelerated and up one of the in the flow direction of the passage opening within the impingement cooling plate opposite cooling duct wall in the form of an impact air cooling jet.
- the baffle cooling plate By providing a distance between the baffle cooling plate and the cover plate it is possible to force a cooling air flow over a corresponding one Cooling channel in the enclosed between cover plate and baffle cooling plate Initiate space so that due to the in the space setting overpressure the cooling air through the large number in the baffle cooling plate provided flow openings is forcibly carried out.
- the cooling air can flow through an alternative suitable cooling duct arrangement the baffle cooling plate also flow in the opposite direction so that the cover plate impact air is targeted.
- the baffle cooling plate is to guarantee between the cover plate and the cover band pressed non-positively against the cooling channels open on one side.
- the pressing takes place with the help of at least one spacer, which is preferably elastic or is plastically deformable and between the cover plate and the baffle cooling plate, is preferably provided on the edge region of the baffle cooling plate.
- the cover plate itself is, as already mentioned at the beginning, with conventional ones Joining techniques, for example high-temperature soldering, with the shroud, where the cover plate to the press force required for the frictional connection Impact cooling plate generated.
- Joining techniques for example high-temperature soldering
- the spacer is elastically or plastically deformable trained so that when a maximum permissible joining force between the cover plate and the baffle cooling plate a deformation of the spacer entry.
- the baffle cooling plate is only on hers
- the peripheral edge between the cover plate and the cover tape using the above mentioned spacer has that in the form of a near the peripheral edge the baffle cooling plate extending sealing lip is formed.
- each between the baffle cooling plate and the cover band or cover band can be introduced.
- a spring-like element advantageously serves to serve as the baffle cooling plate flat from the side of the cover plate against the cooling system which is open on one side of the cover tape. This gives the baffle cooling plate a flat surface Pressure effect against the shroud, so that the baffle cooling plate almost can be pressed gas-tight against the structure of the cooling channels.
- FIG. 1 is a partial cross-sectional view through the shroud 1 Turbine blade shown schematically.
- the shroud 1 with a radial is Cover plate 2, preferably has a high temperature solder connection 3.
- a cooling duct system 4 is located between the cover plate 2 and the cover band 1 provided, which is covered by a baffle cooling plate 5.
- the baffle cooling plate 5 is between the cover plate 2 and the cover tape 1 by means of a spacer 6 pressurized under pressure. In the exemplary embodiment shown, this extends Spacer 6 over the entire circumferential area of the baffle cooling plate 5 and presses the baffle cooling plate 5 with a joining force that can be adjusted by the cover plate 2 against the contact surface 7 on the shroud 1.
- a sealing element 8 is provided, on the one hand for one gas-tight closure and on the other hand to an improved clamping effect serves in particular across the press force.
- the baffle cooling plate 5 has flow passage openings 9 with a narrowed Flow cross-section, through the cooling air depending on the pressure conditions from the Cooling channels 4 towards the cover plate 2 or in the opposite direction in the form of a local impingement cooling air flow passes and in this way to an improved Cooling effect leads.
- the baffle cooling plate additionally presses gas-tight against the cooling duct wall structures 11.
- the joining force with which the impingement cooling plate 5 between the cover plate 2 and the cover tape 1 is applied should preferably be limited, so that at least the baffle cooling plate 5 free of bending stress due to its thermal expansion is held.
- the spacer 6 is made of an elastic or plastic deformable material made so that the spacer 6 when exceeded a maximum joining force is elastically deformed, thereby increasing the Joining force is not passed on to the baffle cooling plate 5.
- FIG. 3 shows a comparable partial cross-sectional representation to FIG. 1, however, the baffle cooling plate 5 has bead-like deformations 12. Over a running along the peripheral edge of the baffle cooling plate 5, as a recess trained bead 12, the baffle cooling plate 5 is on the support surface 7 of the Cover tape 1. Additional can be provided by providing a not shown Sealing surface in the area of the contact surface of the bead 12 a gas-tight seal between baffle cooling plate 5 and shroud 1 can be guaranteed. In the middle of the baffle cooling plate 5 is a bead 12 'formed as an elevation, which with the Bottom of the cover plate 2 comes into contact and thus the baffle cooling plate 5 centrally presses against the cooling channels of the shroud 1. Additional spacers 6, from of which only one is shown in FIG. 3 can be used for further fixation of the Impact cooling plate 5 serve.
- FIG 4 is a detailed representation of a press connection between a cover plate 2 and the baffle cooling plate 5 shown.
- the edge area of the baffle cooling plate 5 flared and has an elastic spacer 13 in bordered area.
- cover plate 2 and baffle cooling plate 5 is again introduced the spacer 6 described above.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
- Fig. 1
- Teilquerschnittsdarstellung durch ein Deckband mit Prall-Kühlplatte,
- Fig. 2
- Teilquerschnittsdarstellung durch ein bekanntes Deckband (Stand der Technik),
- Fig. 3
- Teilquerschnittsdarstellung durch ein Deckband mit einer Überhöhungen und Vertiefungen aufweisenden Prall-Kühlplatte.
- 1
- Deckband
- 2
- Deckplatte
- 3
- Lötnaht
- 4
- Kühlkanal
- 5
- Prall-Kühlplatte
- 6
- Distanzelement
- 7
- Auflagefläche
- 8
- Dichtelement
- 9
- Durchtrittsöffnung innerhalb der Prall-Kühlplatte
- 10
- elastisches gasdurchlässiges Element
- 11
- Kühlkanalwand
- 12, 12'
- Sicke
- 13
- Elastisches Dichtelement
Claims (9)
- Kühlvorrichtung für ein Deckband (1) einer Gasturbinenschaufel, mit einem in dem Deckband (1) vorgesehenen Kühlkanalsystem, das radial zur Gasturbinenschaufel einseitig offene Kühlkanäle (4) aufweist und mit einer Deckplatte (2) abgeschlossen ist,
dadurch gekennzeichnet, dass zwischen Deckplatte (2) und den einseitig offenen Kühlkanälen (4) eine Prall-Kühlplatte (5) derart vorgesehen ist, dass die Prall-Kühlplatte (5) auf den einseitig offenen Kühlkanälen (4) aufliegt, kraftschlüssig gegen diese gepresst ist und mit der Deckplatte (2) einen Zwischenraum einschließt. - Kühlvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass zwischen Deckplatte (2) und Prall-Kühlplatte (5) wenigstens ein Distanzelement (6) derart vorgesehen ist, dass die Prall-Kühlplatte (5) vermittels der zwischen der Deckplatte (2) und dem Deckband (1) herrschenden Fügekraft elastisch plastisch begrenzt gegen die einseitig offenen Kühlkanäle (4) pressbar ist. - Kühlvorrichtung nach Anspruch 2,
dadurch gekennzeichnet, dass das Distanzelement (6) elastisch oder plastisch verformbar ist. - Kühlvorrichtung nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass die Prall-Kühlplatte (5) Überhöhungen und/oder Vertiefungen (12, 12') aufweist, die in Kontakt mit der Deckplatte (2) und/oder dem Deckband (1) treten und die Prall-Kühlplatte (5) kraftschlüssig aber spannungsfrei fixieren. - Kühlvorrichtung nach Anspruch 4,
dadurch gekennzeichnet, dass die Vertiefung in Form einer im Bereich des Umfangsrandes der Prall-Kühlplatte (5) umlaufenden Sicke (12) ausgebildet ist, die auf einer die einseitig offenen Kühlkanäle (4) umgebenden Auflagefläche (7) am Deckband (1) aufliegt. - Kühlvorrichtung nach Anspruch 5,
dadurch gekennzeichnet, dass im Bereich der Auflagefläche (7) am Deckband (1) ein Dichtungselement vorgesehen ist, über das die Prall-Kühlplatte (5) mit dem Deckband (1) in Kontakt steht. - Kühlvorrichtung nach einem der Ansprüche 2 bis 6,
dadurch gekennzeichnet, dass das Distanzelement (6) die Prall-Kühlplatte (5) im Bereich ihres Umfangsrandes gegen das Deckband (1) presst. - Kühlvorrichtung nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass im Zwischenraum ein elastisches, gasdurchlässiges Element (10) vorgesehen ist, das die Prall-Kühlplatte (5) kraftbeaufschlagt gegen die einseitig offenen Kühlkanäle (4) presst. - Kühlvorrichtung nach Anspruch 8,
dadurch gekennzeichnet, dass das elastische, gasdurchlässige Element (10) ein Federelement ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10062907 | 2000-12-16 | ||
| DE10062907 | 2000-12-16 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1215364A2 true EP1215364A2 (de) | 2002-06-19 |
| EP1215364A3 EP1215364A3 (de) | 2004-01-02 |
| EP1215364B1 EP1215364B1 (de) | 2005-08-03 |
Family
ID=7667527
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01128572A Expired - Lifetime EP1215364B1 (de) | 2000-12-16 | 2001-11-30 | Vorrichtung zur Kühlung eines Deckbandes einer Gasturbinenschaufel |
| EP01128573A Expired - Lifetime EP1215363B1 (de) | 2000-12-16 | 2001-11-30 | Gekühlte Gasturbinenschaufel |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01128573A Expired - Lifetime EP1215363B1 (de) | 2000-12-16 | 2001-11-30 | Gekühlte Gasturbinenschaufel |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US6589011B2 (de) |
| EP (2) | EP1215364B1 (de) |
| JP (1) | JP2002201907A (de) |
| DE (4) | DE10131073A1 (de) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1503330B1 (de) | 2002-05-09 | 2010-06-02 | Sony Corporation | Verfahren zum erkennen eines biologischen musters, detektor für biologische muster, verfahren für biologische zertifikate und biologische zertifikatvorrichtung |
| EP1789654B1 (de) | 2004-09-16 | 2017-08-23 | General Electric Technology GmbH | Strömungsmaschinenschaufel mit fluidisch gekühltem deckband |
| US20070048122A1 (en) * | 2005-08-30 | 2007-03-01 | United Technologies Corporation | Debris-filtering technique for gas turbine engine component air cooling system |
| US20110110772A1 (en) * | 2009-11-11 | 2011-05-12 | Arrell Douglas J | Turbine Engine Components with Near Surface Cooling Channels and Methods of Making the Same |
| US9133724B2 (en) * | 2012-01-09 | 2015-09-15 | General Electric Company | Turbomachine component including a cover plate |
| US9567857B2 (en) | 2013-03-08 | 2017-02-14 | Rolls-Royce North American Technologies, Inc. | Turbine split ring retention and anti-rotation method |
| US10590785B2 (en) * | 2014-09-09 | 2020-03-17 | United Technologies Corporation | Beveled coverplate |
| DE102017208680A1 (de) | 2017-05-23 | 2018-11-29 | Siemens Aktiengesellschaft | Verfahren zum Befestigen eines Kühlbleches an einer Turbinenschaufel |
| US10370300B2 (en) * | 2017-10-31 | 2019-08-06 | General Electric Company | Additively manufactured turbine shroud segment |
| US11156102B2 (en) * | 2018-03-19 | 2021-10-26 | General Electric Company | Blade having a tip cooling cavity and method of making same |
| CN114405715B (zh) * | 2021-12-28 | 2023-08-18 | 东方电气集团东方汽轮机有限公司 | 一种燃气轮机空心叶片喷涂用装夹工装 |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL88170C (de) * | 1952-10-31 | 1900-01-01 | ||
| US3756020A (en) * | 1972-06-26 | 1973-09-04 | Curtiss Wright Corp | Gas turbine engine and cooling system therefor |
| US3781129A (en) * | 1972-09-15 | 1973-12-25 | Gen Motors Corp | Cooled airfoil |
| GB1530256A (en) * | 1975-04-01 | 1978-10-25 | Rolls Royce | Cooled blade for a gas turbine engine |
| US4017209A (en) * | 1975-12-15 | 1977-04-12 | United Technologies Corporation | Turbine rotor construction |
| US4086757A (en) * | 1976-10-06 | 1978-05-02 | Caterpillar Tractor Co. | Gas turbine cooling system |
| US4712979A (en) * | 1985-11-13 | 1987-12-15 | The United States Of America As Represented By The Secretary Of The Air Force | Self-retained platform cooling plate for turbine vane |
| US4752184A (en) * | 1986-05-12 | 1988-06-21 | The United States Of America As Represented By The Secretary Of The Air Force | Self-locking outer air seal with full backside cooling |
| US5350277A (en) * | 1992-11-20 | 1994-09-27 | General Electric Company | Closed-circuit steam-cooled bucket with integrally cooled shroud for gas turbines and methods of steam-cooling the buckets and shrouds |
| JP3188105B2 (ja) | 1994-07-11 | 2001-07-16 | 三菱重工業株式会社 | ガスタービンの動翼 |
| US5634766A (en) * | 1994-08-23 | 1997-06-03 | General Electric Co. | Turbine stator vane segments having combined air and steam cooling circuits |
| DE19643716A1 (de) * | 1996-10-23 | 1998-04-30 | Asea Brown Boveri | Schaufelträger für einen Verdichter |
| JP3316415B2 (ja) * | 1997-05-01 | 2002-08-19 | 三菱重工業株式会社 | ガスタービン冷却静翼 |
| JP2955252B2 (ja) * | 1997-06-26 | 1999-10-04 | 三菱重工業株式会社 | ガスタービン動翼チップシュラウド |
| GB9815611D0 (en) * | 1998-07-18 | 1998-09-16 | Rolls Royce Plc | Improvements in or relating to turbine cooling |
| US6179555B1 (en) * | 1998-10-06 | 2001-01-30 | Pratt & Whitney Canada Corp. | Sealing of T.O.B.I feed plenum |
| GB2365930B (en) * | 2000-08-12 | 2004-12-08 | Rolls Royce Plc | A turbine blade support assembly and a turbine assembly |
| US6454526B1 (en) * | 2000-09-28 | 2002-09-24 | Siemens Westinghouse Power Corporation | Cooled turbine vane with endcaps |
-
2001
- 2001-06-27 DE DE10131073A patent/DE10131073A1/de not_active Withdrawn
- 2001-06-28 DE DE10131370A patent/DE10131370A1/de not_active Withdrawn
- 2001-11-30 EP EP01128572A patent/EP1215364B1/de not_active Expired - Lifetime
- 2001-11-30 EP EP01128573A patent/EP1215363B1/de not_active Expired - Lifetime
- 2001-11-30 US US09/996,693 patent/US6589011B2/en not_active Expired - Lifetime
- 2001-11-30 DE DE50107607T patent/DE50107607D1/de not_active Expired - Lifetime
- 2001-11-30 DE DE50106966T patent/DE50106966D1/de not_active Expired - Lifetime
- 2001-11-30 US US09/996,684 patent/US6682304B2/en not_active Expired - Fee Related
- 2001-12-17 JP JP2001383503A patent/JP2002201907A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US6682304B2 (en) | 2004-01-27 |
| US20020127103A1 (en) | 2002-09-12 |
| EP1215364A3 (de) | 2004-01-02 |
| DE50107607D1 (de) | 2006-02-16 |
| EP1215363A2 (de) | 2002-06-19 |
| EP1215363B1 (de) | 2005-10-05 |
| EP1215363A3 (de) | 2004-01-02 |
| JP2002201907A (ja) | 2002-07-19 |
| US20020136635A1 (en) | 2002-09-26 |
| US6589011B2 (en) | 2003-07-08 |
| DE10131073A1 (de) | 2002-06-20 |
| EP1215364B1 (de) | 2005-08-03 |
| DE10131370A1 (de) | 2002-06-20 |
| DE50106966D1 (de) | 2005-09-08 |
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