EP1496203A1 - Turbinenschaufel mit Prallkühlung - Google Patents
Turbinenschaufel mit Prallkühlung Download PDFInfo
- Publication number
- EP1496203A1 EP1496203A1 EP04090262A EP04090262A EP1496203A1 EP 1496203 A1 EP1496203 A1 EP 1496203A1 EP 04090262 A EP04090262 A EP 04090262A EP 04090262 A EP04090262 A EP 04090262A EP 1496203 A1 EP1496203 A1 EP 1496203A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impingement
- cooling
- air
- wall
- turbine blade
- 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
- F01D5/12—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
-
- 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
- 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
- F05D2250/14—Two-dimensional elliptical
-
- 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
- F05D2250/70—Shape
- F05D2250/71—Shape curved
- F05D2250/712—Shape curved concave
-
- 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
- F05D2260/201—Heat transfer, e.g. cooling by impingement of a fluid
Definitions
- the invention relates to a turbine blade with a Impact cooling of the thermally highly loaded outer wall sections, being inside the hollow turbine blade at least one partition to form one with cooling air supplied cooling air chamber and in the partition one Variety impingement air ducts for applying the under formation an impact air cooling chamber adjacent in the distance Inner surface of the hot outer wall sections with cooling air is provided.
- the efficiency of gas turbines can be increased by increasing the combustion temperatures achieved in the combustion chamber be improved.
- limits are set insofar as the thermal Load capacity of the components exposed to the hot gases, in particular also the mechanically highly loaded Guiding and running blades in the combustion chamber downstream Turbine stage, is limited.
- the material-related Temperature limits are not to be exceeded the relevant components and in particular their thermally highly loaded areas known to be of the Compressor branched cooling air cooled.
- Impeller cooling for a turbine blade are inside a hollow blade bounded by two side walls arranged in the longitudinal direction partitions, each with a side wall portion an elongated Cooling air supply and distribution chamber (Cooling air chamber) and several adjacent to this impact air cooling chambers form. Passed through the impingement air ducts the cooling air introduced into the cooling air chamber in succession - in other cases at the same time - in the neighboring Impact air cooling chambers, thereby the inner surfaces the thermally highly stressed areas of the outer walls to cool the turbine blade from the inside intensively and thus the gas turbine at the highest possible combustion temperatures with high efficiency and without material damage to be able to operate.
- Cooling air supply and distribution chamber Cooling air chamber
- the baffles are in the Partition straight but obliquely aligned to one favorable angle for the impingement of the impingement cooling air to ensure the inner surfaces of the outer walls.
- the from the impact air cooling chambers via air ducts in the side walls the turbine blade exiting air In addition, an insulating layer between the blade material and the hot gas, which is the thermal load the turbine blade further reduced.
- the load-bearing Reduces the area of the partitions that support the outer walls, and on the other hand occur in the area of the baffles with a high local mechanical load connected spikes, which is a reduction the life of the turbine blade result.
- the strength of the partitions can not be increased arbitrarily.
- the invention is based on the object, a turbine blade of the type mentioned above in such a way that at essentially unchanged weight, the voltage spikes degraded in the area of the blast air ducts and thus the time vibration and creep resistance and ultimately the Lifespan be increased.
- the invention is based on the recognition that the Partitions in the middle area are the coolest and one Represent area of highest tensile stress. In this Range are at the state of the art trained turbine blades the inlet openings the straight-lined and to achieve a specific Air impact angle obliquely oriented impingement air ducts, so that there the stress concentration especially is high.
- the impingement air ducts now bent, in such a way that the Impact air outlet and angle remains unchanged and the impingement air at a predetermined angle to the inner surface directed the relevant outer wall portion is, but the air inlet and thus the entire Impeller air duct in a warmer edge zone of the partition with lower tensile stresses is laid.
- the baffle channel is concavely curved with respect to the outer wall and extends as a whole near the hot outer wall and almost parallel to this.
- This education and arrangement the baffles reduce the notch effect and increase the creep resistance and the fatigue strength, so that the life of the turbine blade is increased.
- the reduction thus achieved leaves the concentration of stress in the area of the blast air ducts lower wall thicknesses of the partitions too, so that the weight the turbine blade can be reduced.
- the cross-sectional area of the baffles the shape of a Oblong or oval, with the longitudinal axis of the oval or elongated hole extending in the longitudinal direction of the cooling air chamber.
- this cross-sectional shape and its radial Alignment and the resulting low notch factor creep and time-swinging behavior also becomes improves and increases the life of the turbine blade.
- the wall thickness of the Partitions reduced, and thus the weight of the turbine blade be reduced. It was found that in particular the combinatory effect of the curved ones and thus completely in the warm area of the partition laid impingement air ducts in conjunction with the previously described Cross-sectional shape and orientation to one unexpected increase in creep and time fatigue and ultimately a long life.
- the blade profile 1 of a high-pressure turbine blade is from a thin-walled outer wall 2 and supporting inner Partitions 3 to 5 formed.
- the first and second wearing Partitions 3 and 4 limit together with a Outside wall portion 2a a cooling air chamber 6, in the continuous branched off from the compressor of the gas turbine Cooling air is introduced.
- the impact air cooling chamber 8 is of the first partition wall 3 and an outer wall section 2b limited, and the second impact air cooling chamber 9 is of the second partition wall 4, two outer wall sections 2c, 2d and the third partition wall 5 is formed.
- the third partition 5 and two outer wall sections 2e, 2f close one another cooling chamber 10 a.
- the in the first impact air cooling chamber 8 introduced cooling air passes through air ducts 11a in Outside wall portion 2b to the outer surface, around there a Air layer to the outer shielding of the material opposite to form the hot air.
- the cooling air in the second Impeller air cooling chamber 9 flows over the cooling chamber 10 and Cooling channels 11b or directly via the cooling channels 11c outward. Due to the curved design of the baffles 7 and their possible possible transfer to the Outside wall 2 near the edge of the respective partition wall 3 and 4, without the direction of the out of the blast air ducts 7 exiting cooling air compared to at oblique arranged impingement air ducts known outlet direction is changed, the voltages in the partitions 3 and 4 significantly reduced in the area of the impingement air ducts 7.
- the shape of a slot has and the longitudinal axis of the cross-sectional area with the longitudinal axis of the blade profile 1 or its radial Alignment matches.
- the cross-sectional area of Impact air ducts can equally have those of an ellipse. Due to the elliptical or oblong shape the baffles in connection with the orientation the longitudinal axis of the cross-sectional area to the dominant The load vector becomes the time fatigue strength increased and on the other hand reduces the notch effect, so that longer life of the high-pressure turbine blade can be achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
- Fig. 1
- eine Schnittansicht einer Turbinenschaufel; und
- Fig. 2
- einen Schnitt längs der Linie AA in Fig. 1.
- 1
- Schaufelprofil
- 2
- Außenwand
- 2a -2f
- Außenwandabschnitte
- 3
- erste Trennwand
- 4
- zweite Trennwand
- 5
- dritte Trennwand
- 6
- Kühlluftkammer
- 7
- Prallluftkanal
- 8
- erste Prallluftkühlkammer
- 9
- zweite Prallluftkühlkammer
- 10
- Kühlkammer
- 11a-11c
- Luftkanäle
Claims (2)
- Turbinenschaufel mit einer Prallkühlung der thermisch hoch belasteten Außenwandabschnitte, wobei im Innern der hohlen Turbinenschaufel mindestens eine Trennwand zur Ausbildung einer mit Kühlluft versorgten Kühlluftkammer und in der Trennwand eine Vielzahl Prallluftkanäle zum Beaufschlagen der unter Bildung einer Prallluftkühlkammer im Abstand benachbarten Innenfläche der(des) heißen Außenwandabschnitte(s) mit Prallkühlluft vorgesehen ist, dadurch gekennzeichnet, dass die Prallluftkanäle (7) mit Bezug auf die nahe Außenwand (2) konkav gekrümmt und im Wesentlichen parallel zu dieser sowie vollständig in dem außenwandnahen heißen Bereich angeordnet sind.
- Turbinenschaufel nach Anspruch 1, dadurch gekennzeichnet, dass die Prallluftkanäle (7) eine langlochartige oder elliptische Querschnittsflache aufweisen, deren Ausrichtung der Längsachse mit der radialen Schaufelausrichtung übereinstimmt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10332563 | 2003-07-11 | ||
DE10332563A DE10332563A1 (de) | 2003-07-11 | 2003-07-11 | Turbinenschaufel mit Prallkühlung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1496203A1 true EP1496203A1 (de) | 2005-01-12 |
EP1496203B1 EP1496203B1 (de) | 2006-02-08 |
Family
ID=33441771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04090262A Expired - Lifetime EP1496203B1 (de) | 2003-07-11 | 2004-06-28 | Turbinenschaufel mit Prallkühlung |
Country Status (3)
Country | Link |
---|---|
US (1) | US7063506B2 (de) |
EP (1) | EP1496203B1 (de) |
DE (2) | DE10332563A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1605138A2 (de) * | 2004-05-27 | 2005-12-14 | United Technologies Corporation | Gekühlte Rotorschaufel mit Prallkühlung im Bereich der Eintrittskante |
GB2420156A (en) * | 2004-11-16 | 2006-05-17 | Rolls Royce Plc | Heat transfer arrangement |
EP2196625A1 (de) * | 2008-12-10 | 2010-06-16 | Siemens Aktiengesellschaft | Turbinenschaufel mit in einer Trennwand angeordnetem Durchlass und entsprechender Gusskern |
WO2013162854A1 (en) * | 2012-04-27 | 2013-10-31 | General Electric Company | Durable turbine vane |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7217094B2 (en) * | 2004-10-18 | 2007-05-15 | United Technologies Corporation | Airfoil with large fillet and micro-circuit cooling |
US8966754B2 (en) * | 2006-11-21 | 2015-03-03 | General Electric Company | Methods for reducing stress on composite structures |
US7704048B2 (en) * | 2006-12-15 | 2010-04-27 | Siemens Energy, Inc. | Turbine airfoil with controlled area cooling arrangement |
GB0811391D0 (en) * | 2008-06-23 | 2008-07-30 | Rolls Royce Plc | A rotor blade |
US20110110790A1 (en) * | 2009-11-10 | 2011-05-12 | General Electric Company | Heat shield |
US9347324B2 (en) | 2010-09-20 | 2016-05-24 | Siemens Aktiengesellschaft | Turbine airfoil vane with an impingement insert having a plurality of impingement nozzles |
US8840370B2 (en) | 2011-11-04 | 2014-09-23 | General Electric Company | Bucket assembly for turbine system |
US9004866B2 (en) * | 2011-12-06 | 2015-04-14 | Siemens Aktiengesellschaft | Turbine blade incorporating trailing edge cooling design |
CA2867960A1 (en) * | 2012-03-22 | 2013-09-26 | Alstom Technology Ltd. | Turbine blade |
BR112015002552A2 (pt) * | 2012-08-06 | 2018-05-22 | Gen Electric | aerofólio de turbina e método de produção de um aerofólio de turbina |
US9394798B2 (en) | 2013-04-02 | 2016-07-19 | Honeywell International Inc. | Gas turbine engines with turbine airfoil cooling |
US10145246B2 (en) | 2014-09-04 | 2018-12-04 | United Technologies Corporation | Staggered crossovers for airfoils |
EP3000970B1 (de) * | 2014-09-26 | 2019-06-12 | Ansaldo Energia Switzerland AG | Kühlungsverfahren für die Eintrittskante einer Turbinenschaufel einer Gasturbine |
US10208603B2 (en) | 2014-11-18 | 2019-02-19 | United Technologies Corporation | Staggered crossovers for airfoils |
US10633980B2 (en) | 2017-10-03 | 2020-04-28 | United Technologies Coproration | Airfoil having internal hybrid cooling cavities |
US10704398B2 (en) * | 2017-10-03 | 2020-07-07 | Raytheon Technologies Corporation | Airfoil having internal hybrid cooling cavities |
US10626734B2 (en) | 2017-10-03 | 2020-04-21 | United Technologies Corporation | Airfoil having internal hybrid cooling cavities |
US10626733B2 (en) | 2017-10-03 | 2020-04-21 | United Technologies Corporation | Airfoil having internal hybrid cooling cavities |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5660524A (en) * | 1992-07-13 | 1997-08-26 | General Electric Company | Airfoil blade having a serpentine cooling circuit and impingement cooling |
US5674050A (en) * | 1988-12-05 | 1997-10-07 | United Technologies Corp. | Turbine blade |
EP1001135A2 (de) * | 1998-11-16 | 2000-05-17 | General Electric Company | Turbinenschaufel mit serieller Prallkühlung |
EP1022434A2 (de) * | 1999-01-25 | 2000-07-26 | General Electric Company | Kühlkonfiguration für Gasturbinenschaufel |
US6206638B1 (en) * | 1999-02-12 | 2001-03-27 | General Electric Company | Low cost airfoil cooling circuit with sidewall impingement cooling chambers |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5403158A (en) * | 1993-12-23 | 1995-04-04 | United Technologies Corporation | Aerodynamic tip sealing for rotor blades |
DE19848104A1 (de) * | 1998-10-19 | 2000-04-20 | Asea Brown Boveri | Turbinenschaufel |
DE10059997B4 (de) * | 2000-12-02 | 2014-09-11 | Alstom Technology Ltd. | Kühlbare Schaufel für eine Gasturbinenkomponente |
FR2829174B1 (fr) * | 2001-08-28 | 2006-01-20 | Snecma Moteurs | Perfectionnement apportes aux circuits de refroidissement pour aube de turbine a gaz |
-
2003
- 2003-07-11 DE DE10332563A patent/DE10332563A1/de not_active Withdrawn
-
2004
- 2004-06-28 EP EP04090262A patent/EP1496203B1/de not_active Expired - Lifetime
- 2004-06-28 DE DE502004000285T patent/DE502004000285D1/de not_active Expired - Lifetime
- 2004-07-09 US US10/887,219 patent/US7063506B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5674050A (en) * | 1988-12-05 | 1997-10-07 | United Technologies Corp. | Turbine blade |
US5660524A (en) * | 1992-07-13 | 1997-08-26 | General Electric Company | Airfoil blade having a serpentine cooling circuit and impingement cooling |
EP1001135A2 (de) * | 1998-11-16 | 2000-05-17 | General Electric Company | Turbinenschaufel mit serieller Prallkühlung |
EP1022434A2 (de) * | 1999-01-25 | 2000-07-26 | General Electric Company | Kühlkonfiguration für Gasturbinenschaufel |
US6206638B1 (en) * | 1999-02-12 | 2001-03-27 | General Electric Company | Low cost airfoil cooling circuit with sidewall impingement cooling chambers |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1605138A2 (de) * | 2004-05-27 | 2005-12-14 | United Technologies Corporation | Gekühlte Rotorschaufel mit Prallkühlung im Bereich der Eintrittskante |
EP1605138A3 (de) * | 2004-05-27 | 2007-10-03 | United Technologies Corporation | Gekühlte Rotorschaufel mit Prallkühlung im Bereich der Eintrittskante |
GB2420156A (en) * | 2004-11-16 | 2006-05-17 | Rolls Royce Plc | Heat transfer arrangement |
GB2420156B (en) * | 2004-11-16 | 2007-01-24 | Rolls Royce Plc | A heat transfer arrangement |
US7273350B2 (en) | 2004-11-16 | 2007-09-25 | Rolls-Royce, Plc | Heat transfer arrangement |
EP2196625A1 (de) * | 2008-12-10 | 2010-06-16 | Siemens Aktiengesellschaft | Turbinenschaufel mit in einer Trennwand angeordnetem Durchlass und entsprechender Gusskern |
WO2013162854A1 (en) * | 2012-04-27 | 2013-10-31 | General Electric Company | Durable turbine vane |
CN104254670A (zh) * | 2012-04-27 | 2014-12-31 | 通用电气公司 | 耐久涡轮静叶 |
US9506351B2 (en) | 2012-04-27 | 2016-11-29 | General Electric Company | Durable turbine vane |
Also Published As
Publication number | Publication date |
---|---|
EP1496203B1 (de) | 2006-02-08 |
US7063506B2 (en) | 2006-06-20 |
DE502004000285D1 (de) | 2006-04-20 |
US20050111981A1 (en) | 2005-05-26 |
DE10332563A1 (de) | 2005-01-27 |
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