US20090324387A1 - Aft frame with oval-shaped cooling slots and related method - Google Patents
Aft frame with oval-shaped cooling slots and related method Download PDFInfo
- Publication number
- US20090324387A1 US20090324387A1 US12/216,078 US21607808A US2009324387A1 US 20090324387 A1 US20090324387 A1 US 20090324387A1 US 21607808 A US21607808 A US 21607808A US 2009324387 A1 US2009324387 A1 US 2009324387A1
- Authority
- US
- United States
- Prior art keywords
- aft frame
- pair
- frame
- side walls
- cooling
- 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.)
- Abandoned
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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/14—Casings modified therefor
-
- 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
Abstract
An aft frame adapted to interface between a combustor transition piece and a first stage turbine nozzle includes: a closed-periphery frame comprised of a top, bottom and pair of side walls. A plurality of cooling holes or apertures having elliptical or oval cross-sectional shapes are provided in one or more of the top, bottom and pair of side walls, extending axially through the closed-periphery frame. The cooling holes have major and minor axes arranged such that the major axes are substantially parallel with the top and bottom walls.
Description
- This invention relates to turbine cooling technology and, more specifically, to the cooling of an aft frame component interfacing between the combustor transition piece and a stage 1 turbine nozzle.
- A “transition piece” as understood in the context of a can-annular combustor for a power generating gas turbine, is a duct that connects the combustor liner with the first stage nozzle of the turbine. The aft frame is a component which is located at the exit end of the transition piece and thus acts as an interface between the transition piece and the stage 1 nozzle. It is exposed to hot gases flowing into the stage 1 nozzle and therefore, cooling of the aft frame component is of concern.
- More specifically, hot gases flowing through the transition piece recirculate in a groove between the aft frame and the stage 1 nozzle, causing high thermal gradients. Accordingly, effective cooling needs to be provided on the trailing face of the aft frame, i.e., that side of the frame facing the stage 1 nozzle. Currently, typical aft frame configurations incorporate cooling holes with circular cross sections in order to divert a portion of flow through an impingement sleeve (which surrounds the transition piece) into these holes to cool the aft frame.
- There remains a need, however, for more effective cooling of the aft frame of the transition piece.
- In accordance with an exemplary but non-limiting embodiment of this invention, oval or elliptical-shaped cooling holes are provided about the periphery of the aft frame. Because oval or elliptical-shaped holes provide more surface area for effective convection cooling for a given cross-sectional area, cooling of the aft frame is improved.
- Accordingly, in one aspect, the invention relates to an aft frame adapted to interface between a combustor transition piece and a first stage turbine nozzle comprising: a closed-periphery frame comprised of a top, bottom and pair of side walls; and a plurality of cooling apertures extending through one or more of the top, bottom and pair of side walls, the cooling apertures having an elliptical or oval cross-sectional shape.
- In another aspect, the invention relates to an aft frame adapted to interface between a combustor transition piece and a first stage turbine nozzle comprising: a closed-periphery frame comprised of a top, bottom and pair of side walls; and a plurality of cooling apertures having an elliptical or oval cross-sectional shape provided in each of the top, bottom and pair of side walls, extending axially through the frame; and wherein the cooling apertures have major and minor axes, arranged such that the major axes are substantially parallel with the top and bottom walls.
- In still another aspect, the invention relates to a method of forming a turbine aft frame adapted to interface between a combustor transition piece and a first stage turbine nozzle comprising: a) providing a closed periphery aft frame having top and bottom and a pair of side walls; and b) forming elliptical-shaped cooling holes in at least one of said top, bottom and pair of side walls, extending axially through the aft frame.
- The invention will now be described in more detail in connection with the figures identified below.
-
FIG. 1 is a perspective view of a typical transition piece aft frame of known construction; -
FIG. 2 is an enlarged detail showing known circular cooling holes or slots formed in the aft frame; and -
FIG. 3 is an enlarged detail illustrating the oval or elliptical shape of the cooling holes to be employed in an aft frame of, for example, the type shown inFIG. 1 . - With reference to
FIG. 1 , anaft frame 10 that serves as an interface between a conventional transition piece (not shown) and a first stage turbine nozzle (also not shown) includes top andbottom walls side walls brackets - With reference now to
FIG. 2 ,circular cooling holes 24 are typically spaced about the periphery of the aft frame, allowing cooling air to flow axially into the holes and through the aft frame, thereby cooling the frame. -
FIG. 3 illustrates a modified cooling hole shape that provides better and more efficient cooling of the aft frame. Specifically, some or all of the axially extending cooling holes orapertures 26 have an elliptical or oval cross-sectional shape, thus increasing the surface area for more effective convection cooling for a given cross-sectional area. Elliptical cooling holes orapertures 26 may be used exclusively or in combination with circular cooling holes (e.g., holes 24) as determined by specific cooling requirements. Dimensions for the elliptical holes may also vary in accordance with cooling requirements. Theelliptical cooling holes 26 may be provided in any one or more (or all) of the top, bottom andside walls - While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. An aft frame adapted to interface between a combustor transition piece and a first stage turbine nozzle comprising:
a closed-periphery frame comprised of a top, bottom and pair of side walls; and a plurality of cooling apertures extending through one or more of said top, bottom and pair of side walls, said plurality of cooling apertures having an elliptical or oval cross-sectional shape.
2. The aft frame of claim 1 wherein one or more of said plurality of cooling apertures are provided in each of said top, bottom and pair of side walls.
3. The aft frame of claim 1 wherein said plurality of cooling apertures extend in an axial direction through said closed-periphery frame.
4. The aft frame of claim 2 wherein said plurality of cooling apertures extend in an axial direction through said closed-periphery frame.
5. The aft frame of claim 1 wherein said plurality of cooling apertures have major and minor axes, arranged with said major axes substantially parallel with said top and bottom walls.
6. The aft frame of claim 4 wherein said plurality of cooling apertures have major and minor axes, arranged with said major axes substantially parallel with said top and bottom walls.
7. An aft frame adapted to interface between a combustor transition piece and a first stage turbine nozzle comprising:
a closed-periphery frame comprised of a top, bottom and pair of side walls; and a plurality of cooling apertures having elliptical or oval cross-sectional shapes provided in each of said top, bottom and pair of side walls, extending axially through said closed-periphery frame; and
wherein said plurality of cooling apertures have major and minor axes, arranged such that said major axes are substantially parallel with said top and bottom walls.
8. A method of forming a turbine aft frame adapted to interface between a combustor transition piece and a first stage turbine nozzle comprising:
a) providing a closed periphery aft frame having top and bottom walls and a pair of side walls, and
b) forming elliptically-shaped cooling holes in at least one of said top, bottom and pair of side walls, extending axially through the aft frame.
9. The method of claim 8 including providing said elliptically-shaped cooling holes in all of said top, bottom and pair of side walls.
10. The method of claim 8 wherein said elliptically-shaped cooling holes have major and minor axes, and wherein step b) includes arranging said elliptically-shaped cooling holes with said major axes substantially parallel to said top and bottom walls.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/216,078 US20090324387A1 (en) | 2008-06-30 | 2008-06-30 | Aft frame with oval-shaped cooling slots and related method |
JP2009143807A JP2010014113A (en) | 2008-06-30 | 2009-06-17 | Rear frame having elliptic cooling slot and associated method |
DE102009026015A DE102009026015A1 (en) | 2008-06-30 | 2009-06-23 | Rear frame with oval-shaped cooling slots and associated method |
FR0954340A FR2933139A1 (en) | 2008-06-30 | 2009-06-25 | REAR FRAME WITH OVAL-SHAPED COOLING SLOTS AND METHOD THEREOF |
CN200910159430A CN101619661A (en) | 2008-06-30 | 2009-06-30 | Aft frame with oval-shaped cooling slots and related method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/216,078 US20090324387A1 (en) | 2008-06-30 | 2008-06-30 | Aft frame with oval-shaped cooling slots and related method |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090324387A1 true US20090324387A1 (en) | 2009-12-31 |
Family
ID=41360901
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/216,078 Abandoned US20090324387A1 (en) | 2008-06-30 | 2008-06-30 | Aft frame with oval-shaped cooling slots and related method |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090324387A1 (en) |
JP (1) | JP2010014113A (en) |
CN (1) | CN101619661A (en) |
DE (1) | DE102009026015A1 (en) |
FR (1) | FR2933139A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102182560A (en) * | 2010-01-06 | 2011-09-14 | 通用电气公司 | Tunable transition piece aft frame |
US20120085099A1 (en) * | 2010-10-08 | 2012-04-12 | Alstom Technology Ltd | Tunable seal in a gas turbine engine |
US20130014510A1 (en) * | 2011-07-15 | 2013-01-17 | United Technologies Corporation | Coated gas turbine components |
US20130209250A1 (en) * | 2012-02-13 | 2013-08-15 | General Electric Company | Transition piece seal assembly for a turbomachine |
US20140000267A1 (en) * | 2012-06-29 | 2014-01-02 | General Electric Company | Transition duct for a gas turbine |
US9243508B2 (en) | 2012-03-20 | 2016-01-26 | General Electric Company | System and method for recirculating a hot gas flowing through a gas turbine |
US9255484B2 (en) | 2011-03-16 | 2016-02-09 | General Electric Company | Aft frame and method for cooling aft frame |
US10684016B2 (en) * | 2017-10-13 | 2020-06-16 | General Electric Company | Aft frame assembly for gas turbine transition piece |
US10718224B2 (en) * | 2017-10-13 | 2020-07-21 | General Electric Company | AFT frame assembly for gas turbine transition piece |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6619307B2 (en) * | 2016-09-05 | 2019-12-11 | 三菱日立パワーシステムズ株式会社 | Gas turbine combustor |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3767322A (en) * | 1971-07-30 | 1973-10-23 | Westinghouse Electric Corp | Internal cooling for turbine vanes |
US4923371A (en) * | 1988-04-01 | 1990-05-08 | General Electric Company | Wall having cooling passage |
US5233828A (en) * | 1990-11-15 | 1993-08-10 | General Electric Company | Combustor liner with circumferentially angled film cooling holes |
US5414999A (en) * | 1993-11-05 | 1995-05-16 | General Electric Company | Integral aft frame mount for a gas turbine combustor transition piece |
US6186741B1 (en) * | 1999-07-22 | 2001-02-13 | General Electric Company | Airfoil component having internal cooling and method of cooling |
US6287075B1 (en) * | 1997-10-22 | 2001-09-11 | General Electric Company | Spanwise fan diffusion hole airfoil |
US6368060B1 (en) * | 2000-05-23 | 2002-04-09 | General Electric Company | Shaped cooling hole for an airfoil |
US6375425B1 (en) * | 2000-11-06 | 2002-04-23 | General Electric Company | Transpiration cooling in thermal barrier coating |
US6412268B1 (en) * | 2000-04-06 | 2002-07-02 | General Electric Company | Cooling air recycling for gas turbine transition duct end frame and related method |
US6743350B2 (en) * | 2002-03-18 | 2004-06-01 | General Electric Company | Apparatus and method for rejuvenating cooling passages within a turbine airfoil |
US6984100B2 (en) * | 2003-06-30 | 2006-01-10 | General Electric Company | Component and turbine assembly with film cooling |
US7066716B2 (en) * | 2004-09-15 | 2006-06-27 | General Electric Company | Cooling system for the trailing edges of turbine bucket airfoils |
US7296967B2 (en) * | 2005-09-13 | 2007-11-20 | General Electric Company | Counterflow film cooled wall |
US7377743B2 (en) * | 2005-12-19 | 2008-05-27 | General Electric Company | Countercooled turbine nozzle |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4962640A (en) * | 1989-02-06 | 1990-10-16 | Westinghouse Electric Corp. | Apparatus and method for cooling a gas turbine vane |
JPH09119322A (en) * | 1995-10-27 | 1997-05-06 | Ishikawajima Harima Heavy Ind Co Ltd | Cooling liner of aircraft engine |
JPH09144504A (en) * | 1995-11-22 | 1997-06-03 | Ishikawajima Harima Heavy Ind Co Ltd | Turbine cooling blade and its working method |
US6547257B2 (en) | 2001-05-04 | 2003-04-15 | General Electric Company | Combination transition piece floating cloth seal and stage 1 turbine nozzle flexible sealing element |
JP4381276B2 (en) * | 2004-10-08 | 2009-12-09 | 三菱重工業株式会社 | gas turbine |
JP4898253B2 (en) * | 2005-03-30 | 2012-03-14 | 三菱重工業株式会社 | High temperature components for gas turbines |
-
2008
- 2008-06-30 US US12/216,078 patent/US20090324387A1/en not_active Abandoned
-
2009
- 2009-06-17 JP JP2009143807A patent/JP2010014113A/en active Pending
- 2009-06-23 DE DE102009026015A patent/DE102009026015A1/en not_active Withdrawn
- 2009-06-25 FR FR0954340A patent/FR2933139A1/en active Pending
- 2009-06-30 CN CN200910159430A patent/CN101619661A/en active Pending
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3767322A (en) * | 1971-07-30 | 1973-10-23 | Westinghouse Electric Corp | Internal cooling for turbine vanes |
US4923371A (en) * | 1988-04-01 | 1990-05-08 | General Electric Company | Wall having cooling passage |
US5233828A (en) * | 1990-11-15 | 1993-08-10 | General Electric Company | Combustor liner with circumferentially angled film cooling holes |
US5414999A (en) * | 1993-11-05 | 1995-05-16 | General Electric Company | Integral aft frame mount for a gas turbine combustor transition piece |
US6287075B1 (en) * | 1997-10-22 | 2001-09-11 | General Electric Company | Spanwise fan diffusion hole airfoil |
US6186741B1 (en) * | 1999-07-22 | 2001-02-13 | General Electric Company | Airfoil component having internal cooling and method of cooling |
US6412268B1 (en) * | 2000-04-06 | 2002-07-02 | General Electric Company | Cooling air recycling for gas turbine transition duct end frame and related method |
US6368060B1 (en) * | 2000-05-23 | 2002-04-09 | General Electric Company | Shaped cooling hole for an airfoil |
US6375425B1 (en) * | 2000-11-06 | 2002-04-23 | General Electric Company | Transpiration cooling in thermal barrier coating |
US6743350B2 (en) * | 2002-03-18 | 2004-06-01 | General Electric Company | Apparatus and method for rejuvenating cooling passages within a turbine airfoil |
US6984100B2 (en) * | 2003-06-30 | 2006-01-10 | General Electric Company | Component and turbine assembly with film cooling |
US7066716B2 (en) * | 2004-09-15 | 2006-06-27 | General Electric Company | Cooling system for the trailing edges of turbine bucket airfoils |
US7296967B2 (en) * | 2005-09-13 | 2007-11-20 | General Electric Company | Counterflow film cooled wall |
US7377743B2 (en) * | 2005-12-19 | 2008-05-27 | General Electric Company | Countercooled turbine nozzle |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102182560A (en) * | 2010-01-06 | 2011-09-14 | 通用电气公司 | Tunable transition piece aft frame |
US20120085099A1 (en) * | 2010-10-08 | 2012-04-12 | Alstom Technology Ltd | Tunable seal in a gas turbine engine |
US9121279B2 (en) * | 2010-10-08 | 2015-09-01 | Alstom Technology Ltd | Tunable transition duct side seals in a gas turbine engine |
US9255484B2 (en) | 2011-03-16 | 2016-02-09 | General Electric Company | Aft frame and method for cooling aft frame |
US20130014510A1 (en) * | 2011-07-15 | 2013-01-17 | United Technologies Corporation | Coated gas turbine components |
US10113435B2 (en) * | 2011-07-15 | 2018-10-30 | United Technologies Corporation | Coated gas turbine components |
US20130209250A1 (en) * | 2012-02-13 | 2013-08-15 | General Electric Company | Transition piece seal assembly for a turbomachine |
US9115808B2 (en) * | 2012-02-13 | 2015-08-25 | General Electric Company | Transition piece seal assembly for a turbomachine |
US9243508B2 (en) | 2012-03-20 | 2016-01-26 | General Electric Company | System and method for recirculating a hot gas flowing through a gas turbine |
US20140000267A1 (en) * | 2012-06-29 | 2014-01-02 | General Electric Company | Transition duct for a gas turbine |
US10684016B2 (en) * | 2017-10-13 | 2020-06-16 | General Electric Company | Aft frame assembly for gas turbine transition piece |
US10718224B2 (en) * | 2017-10-13 | 2020-07-21 | General Electric Company | AFT frame assembly for gas turbine transition piece |
Also Published As
Publication number | Publication date |
---|---|
CN101619661A (en) | 2010-01-06 |
DE102009026015A1 (en) | 2009-12-31 |
JP2010014113A (en) | 2010-01-21 |
FR2933139A1 (en) | 2010-01-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20090324387A1 (en) | Aft frame with oval-shaped cooling slots and related method | |
US8186167B2 (en) | Combustor transition piece aft end cooling and related method | |
JP4083717B2 (en) | Combustor insulation shield panel and combination of insulation shield panel and shell | |
US8245515B2 (en) | Transition duct aft end frame cooling and related method | |
US8016546B2 (en) | Systems and methods for providing vane platform cooling | |
US20200025378A1 (en) | Dual-wall impingement, convection, effusion combustor tile | |
US7121787B2 (en) | Turbine nozzle trailing edge cooling configuration | |
CA2528724C (en) | Internally cooled airfoil for a gas turbine engine and method | |
US20100143153A1 (en) | Turbine blade | |
US20080085190A1 (en) | Turbine airfoil with submerged endwall cooling channel | |
JP5744314B2 (en) | Cooling scoop for turbine combustion system | |
US20130045111A1 (en) | Turbine blade cooling system with bifurcated mid-chord cooling chamber | |
US20080226461A1 (en) | Intensively cooled trailing edge of thin airfoils for turbine engines | |
US20070009349A1 (en) | Impingement box for gas turbine shroud | |
EP3076078B1 (en) | Combustor configurations for a gas turbine engine | |
JP2011179495A (en) | Hybrid venturi cooling system | |
WO2010052784A1 (en) | Turbine blade | |
JP2013256950A (en) | Combustor liner cooling assembly for gas turbine system | |
US20170067365A1 (en) | Exhaust frame strut with cooling fins | |
JP5022097B2 (en) | Turbine blade | |
JP2010249131A (en) | Combined convection/effusion cooled one-piece can combustor | |
EP1094200A1 (en) | Gas turbine cooled moving blade | |
US11098596B2 (en) | System and method for near wall cooling for turbine component | |
JP2004003506A (en) | Platform cooling mechanism of gas turbine moving blade | |
US20160178201A1 (en) | Gas turbine engine components and cooling cavities |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: GENERAL ELECTRIC COMPANY, NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TURAGA, VIJAY KUMAR;REEL/FRAME:021216/0504 Effective date: 20080630 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |