EP4288638A1 - Laufschaufelspitze mit kühlkonfiguration - Google Patents
Laufschaufelspitze mit kühlkonfigurationInfo
- Publication number
- EP4288638A1 EP4288638A1 EP22720982.2A EP22720982A EP4288638A1 EP 4288638 A1 EP4288638 A1 EP 4288638A1 EP 22720982 A EP22720982 A EP 22720982A EP 4288638 A1 EP4288638 A1 EP 4288638A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- turbine blade
- cooling
- cooling channel
- blade tip
- 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.)
- Pending
Links
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
- F01D5/187—Convection cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/002—Repairing turbine components, e.g. moving or stationary blades, rotors
- B23P6/007—Repairing turbine components, e.g. moving or stationary blades, rotors using only additive methods, e.g. build-up welding
-
- 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
- F01D5/005—Repairing methods or devices
-
- 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
- F05D2230/00—Manufacture
- F05D2230/30—Manufacture with deposition of material
- F05D2230/31—Layer deposition
-
- 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
- F05D2230/00—Manufacture
- F05D2230/80—Repairing, retrofitting or upgrading methods
-
- 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
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05D2240/307—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the tip of a rotor blade
-
- 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
- F05D2250/18—Two-dimensional patterned
- F05D2250/185—Two-dimensional patterned serpentine-like
-
- 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
- F05D2260/221—Improvement of heat transfer
- F05D2260/2214—Improvement of heat transfer by increasing the heat transfer surface
-
- 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
- F05D2260/221—Improvement of heat transfer
- F05D2260/2214—Improvement of heat transfer by increasing the heat transfer surface
- F05D2260/22141—Improvement of heat transfer by increasing the heat transfer surface using fins or ribs
Definitions
- the invention relates to an improved design of a blade tip of a turbine blade that can be used for new parts or repaired components, and a method Power generation or used for aircraft and/or steam turbines and often have a cooling structure or internal structure on the inside.
- the blade tip in particular is exposed to the highest temperatures and high mechanical loads during use and therefore often has to be reworked or sometimes replaced with a completely new blade.
- the state of the art is to rebuild the original design of components to be repaired or to recreate an original component in the same way. It is therefore the object of the invention to show a design and a method so that the blade tip is cooled better.
- the object is achieved by a blade tip according to claim 1 and a method according to claim 9.
- the blade tip is understood to mean the outer visible blade tip per se and an upper blade area including the inner structure in the blade leaf and cooling.
- 1 shows a view of a turbine blade being repaired
- FIG. 2 shows a side view of a turbine blade to be repaired
- FIG. 3 shows a machined, repaired turbine blade or newly manufactured turbine blade
- FIG. The figures and the description only represent exemplary embodiments of the invention extends to the blade tip 7.
- the airfoil 8 extends in a direction of flow 9 from the leading edge 6 to the trailing edge 3.
- the blade tip 7 preferably has a blade tip wall 10 at its distal end, which at least in places, here preferably completely up to its end from the trailing edge 3 along the circumference of the blade tip 7 and between which a depression 11 is thus present.
- 2 shows a side view according to FIG. 1 with possible defects 17 in the area of the blade tip 7.
- FIG. 2 also shows a blade root 5 below the blade platform 4.
- the defects 17 must be removed so that a component to be repaired according to FIG 3, in which a defect area 16 has been removed from the blade tip 7' (indicated here as a dashed line).
- the machined turbine blade 1' then has an open end 19 according to the shape of the internal cavity(ies). More than the defect area 16 can also be removed, in particular in order to achieve a standard removal depth.
- FIG. 4 now shows an improved cooling design using the example of a blade tip 7 inside.
- a first cooling channel 30 is arranged in the area of the leading edge 6 along the leading edge 6 of the turbine blade 1 .
- the first cooling channel 30 is, in particular, of tubular design and is supplied with a coolant starting from the blade root 5 (FIG. 2).
- At the end of the first cooling channel 30 there is in particular a first outlet opening 36 from which the coolant flows out in the area of the depression 11 (FIG. 1) of the blade tip 7 .
- a particularly present first transition 39 from the first cooling channel 30 to the first outlet opening 36 is particularly conical, i.e. in particular the cross section of the first cooling channel 30 narrows to a smaller diameter, in which case a first channel 37 preferably with a constant diameter up to the blade tip 7 .
- the transition from the first cooling channel 30 to the outlet opening 36 can also be configured differently.
- turbulators 31′ can also be arranged in particular at least in the first cooling channel 30 . These turbulators 31' can also be chosen completely freely in terms of their shape and frequency in order to achieve a favorable flow with targeted/high heat exchange. Adjusting the surface roughness can achieve such results.
- a U-shaped second cooling channel 48 mainly flows through the blade leaf 8 and flows along the first leg 47 from the blade root 5 to the blade tip 7, makes a U-turn at a reversal point 43 in the area of the blade tip 7 and flows along the second leg 46 back again.
- a first thickening 49 in particular in the form of wing-like elements at the end of the first partition wall 41 from the first 47 and second leg 46, which causes the cooling medium to flow in the direction of the blade tip 7 in this area passes through a constriction and then widens and again passes through a second constriction in the second leg 46 .
- the flow within the second cooling channel 48 therefore does not separate from the wall of the cooling channel 48 or only slightly.
- the second outlet opening 45 with a conical second transition 42 (similar to transition 39) which is also preferably designed to narrow conically, with a second channel 44 (similar to the first channel 37 ) with a preferably constant diameter up to the blade tip 7.
- the second outlet opening 45 is formed in the area of the reversal point 43 of the second cooling channel 48, preferably on the side of the first leg 47 of the upflow area. Further outlet openings can preferably be present in the area of the reversal point 43 of the second cooling channel 48 .
- the cross section of the first leg 47, ie the inflow area is wider than the second leg 46 of the outflow area.
- turbulators 31 ′′ can also be arranged in the second cooling channel 48 .
- These turbulators 31'' can also be chosen completely freely in terms of their shape and frequency in order to achieve a favorable flow with targeted/high heat exchange. Adjusting the surface roughness can achieve such results.
- the airfoil 8 can preferably also have a third cooling duct 57, comparable to the second cooling duct 48, with a first leg 55 and a second leg 54, in which the cooling medium flows in the direction of the blade tip 7, with a second thickening 60 here as well at the end of a second partition wall 53 between the first 55 and second leg 54 of the third cooling channel 57 is present.
- the outlet opening 50 in the area of the second reversal point 51 with an in particular conical second transition 63 into a third channel 64 .
- the cross section of the inflowing limb 55 in the third cooling duct 64 is larger than the cross section of the outflowing limb 54.
- the two limbs 54, 55 of the third cooling duct 57 are each wider than the limbs 46, 47 of the second cooling duct 48 lying between them.
- This improved design can also be produced directly for the new part.
- the new part can be cast in this way or built up completely using AM and an improved cooling design according to FIG. 4 is built up separately. This makes it possible to provide an improved cooling design when repairing. It is also possible to repair, build up and thus improve competitor blades.
- the design possibilities of the additive structure on the blade cavity can enable the following functions: ⁇ Multi-wall structure to separate cooling air into individual strands and place them in a targeted manner; ⁇ Cross-section adjustments to achieve targeted flow properties, such as turbulent and/or laminar flow-enhancing features; ⁇ baffles, which are particularly wing-like, in 2D and 3D profile, in order to be able to deflect or direct the flow; ⁇ Heat transfer characteristics that provide increased surface areas, particularly through a spongy build-up via LPBF; ⁇ Structural features that can absorb a large area through a large number of small "filling elements" (e.g. support structure).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021204782.3A DE102021204782A1 (de) | 2021-05-11 | 2021-05-11 | Verbesserte Schaufelspitze im Neuteil oder repariertem Bauteil und Verfahren |
| PCT/EP2022/059013 WO2022238051A1 (de) | 2021-05-11 | 2022-04-05 | Laufschaufelspitze mit kühlkonfiguration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4288638A1 true EP4288638A1 (de) | 2023-12-13 |
Family
ID=81580124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22720982.2A Pending EP4288638A1 (de) | 2021-05-11 | 2022-04-05 | Laufschaufelspitze mit kühlkonfiguration |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US12345176B2 (de) |
| EP (1) | EP4288638A1 (de) |
| DE (1) | DE102021204782A1 (de) |
| WO (1) | WO2022238051A1 (de) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080118366A1 (en) * | 2006-11-20 | 2008-05-22 | General Electric Company | Bifeed serpentine cooled blade |
| US20080145234A1 (en) * | 2006-12-19 | 2008-06-19 | General Electric Company | Cluster bridged casting core |
| WO2019245546A1 (en) * | 2018-06-20 | 2019-12-26 | Siemens Energy, Inc. | Cooled turbine blade assembly, corresponding methods for cooling and manufacturing |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2165315B (en) * | 1984-10-04 | 1987-12-31 | Rolls Royce | Improvements in or relating to hollow fluid cooled turbine blades |
| GB9014762D0 (en) * | 1990-07-03 | 1990-10-17 | Rolls Royce Plc | Cooled aerofoil vane |
| JP3411775B2 (ja) * | 1997-03-10 | 2003-06-03 | 三菱重工業株式会社 | ガスタービン動翼 |
| CA2334071C (en) | 2000-02-23 | 2005-05-24 | Mitsubishi Heavy Industries, Ltd. | Gas turbine moving blade |
| JP4064778B2 (ja) * | 2002-10-09 | 2008-03-19 | 三菱重工業株式会社 | ガスタービン翼体およびガスタービン |
| US6988872B2 (en) * | 2003-01-27 | 2006-01-24 | Mitsubishi Heavy Industries, Ltd. | Turbine moving blade and gas turbine |
| US7431562B2 (en) * | 2005-12-21 | 2008-10-07 | General Electric Company | Method and apparatus for cooling gas turbine rotor blades |
| US7431561B2 (en) * | 2006-02-16 | 2008-10-07 | General Electric Company | Method and apparatus for cooling gas turbine rotor blades |
| US7695243B2 (en) | 2006-07-27 | 2010-04-13 | General Electric Company | Dust hole dome blade |
| US20090165988A1 (en) | 2007-12-31 | 2009-07-02 | General Electric Company | Turbine airfoil casting method |
| JP5189406B2 (ja) | 2008-05-14 | 2013-04-24 | 三菱重工業株式会社 | ガスタービン翼およびこれを備えたガスタービン |
| GB201102719D0 (en) | 2011-02-17 | 2011-03-30 | Rolls Royce Plc | Cooled component for the turbine of a gas turbine engine |
| US9085980B2 (en) * | 2011-03-04 | 2015-07-21 | Honeywell International Inc. | Methods for repairing turbine components |
| US9103217B2 (en) | 2012-10-31 | 2015-08-11 | General Electric Company | Turbine blade tip with tip shelf diffuser holes |
| US9797258B2 (en) * | 2013-10-23 | 2017-10-24 | General Electric Company | Turbine bucket including cooling passage with turn |
| US20160341046A1 (en) | 2014-05-29 | 2016-11-24 | General Electric Company | Dust holes |
| US9963975B2 (en) | 2015-02-09 | 2018-05-08 | United Technologies Corporation | Trip strip restagger |
| FR3056631B1 (fr) * | 2016-09-29 | 2018-10-19 | Safran | Circuit de refroidissement ameliore pour aubes |
| US10487660B2 (en) | 2016-12-19 | 2019-11-26 | General Electric Company | Additively manufactured blade extension with internal features |
| DE102018119572A1 (de) * | 2018-08-13 | 2020-02-13 | Man Energy Solutions Se | Kühlsystem zum aktiven Kühlen einer Turbinenschaufel |
| DE102019125779B4 (de) * | 2019-09-25 | 2024-03-21 | Man Energy Solutions Se | Schaufel einer Strömungsmaschine |
-
2021
- 2021-05-11 DE DE102021204782.3A patent/DE102021204782A1/de not_active Withdrawn
-
2022
- 2022-04-05 US US18/559,046 patent/US12345176B2/en active Active
- 2022-04-05 WO PCT/EP2022/059013 patent/WO2022238051A1/de not_active Ceased
- 2022-04-05 EP EP22720982.2A patent/EP4288638A1/de active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080118366A1 (en) * | 2006-11-20 | 2008-05-22 | General Electric Company | Bifeed serpentine cooled blade |
| US20080145234A1 (en) * | 2006-12-19 | 2008-06-19 | General Electric Company | Cluster bridged casting core |
| WO2019245546A1 (en) * | 2018-06-20 | 2019-12-26 | Siemens Energy, Inc. | Cooled turbine blade assembly, corresponding methods for cooling and manufacturing |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2022238051A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022238051A1 (de) | 2022-11-17 |
| US20240229650A1 (en) | 2024-07-11 |
| DE102021204782A1 (de) | 2022-11-17 |
| KR20240005914A (ko) | 2024-01-12 |
| US12345176B2 (en) | 2025-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE102008037384A1 (de) | Konkaver Turbinenschaufel-Kühlkanal unter Verwendung eines Doppelwirbelströmungsmechanismus und Verfahren dafür | |
| EP1113145A1 (de) | Schaufel für Gasturbinen mit Drosselquerschnitt an Hinterkante | |
| DE102015219530A1 (de) | Schaufel für eine Strömungsmaschine, Turbofantriebwerk und ein Verfahren zur Herstellung einer Schaufel | |
| EP2304185A1 (de) | Turbinenschaufel für eine gasturbine und gusskern zum herstellen in einer solchen | |
| DE102008055580A1 (de) | Adaptives Rotorblatt für eine Windenergieanlage | |
| WO2004035992A1 (de) | Kühlbares bauteil | |
| EP2787182B1 (de) | Leitschaufel für eine Strömungsmaschine, Leitschaufelgitter und Verfahren zur Herstellung einer Leitschaufel oder eines Leitschaufelgitters | |
| DE102011056619B4 (de) | Einrichtung und Verfahren zum Kühlen von Plattformbereichen von Turbinenlaufschaufeln | |
| EP2615243A1 (de) | Schaufelkranzsegment für eine Strömungsmaschine und Verfahren zur Herstellung | |
| WO2010026005A1 (de) | Turbinenlaufschaufel mit angepasster eigenfrequenz mittels eines einsatzes | |
| EP4088006B1 (de) | Turbinenschaufelspitze, turbinenschaufel und verfahren | |
| DE102012104240A1 (de) | Hybridströmungs-Schaufeldesign | |
| DE10129975A1 (de) | Giessform für den Kern einer Gasturbinenschaufel oder dergleichen | |
| EP4288638A1 (de) | Laufschaufelspitze mit kühlkonfiguration | |
| EP1138878B1 (de) | Bauteil einer Gasturbine | |
| CH700320A1 (de) | Verfahren zum herstellen eines bauteils einer gasturbine. | |
| EP3269928A1 (de) | Turbinenschaufel mit strebenförmigen kühlrippen | |
| EP2476863A1 (de) | Turbinenschaufel für eine Gasturbine | |
| EP2861829A1 (de) | Luftgekühlte turbinenlaufschaufel für eine gasturbine | |
| DE102015226653A1 (de) | Turbinenschaufel für eine thermische Strömungsmaschine | |
| DE102017209632A1 (de) | Herstellungs- oder Reparaturverfahren für eine Strömungsmaschine, Strömungsmaschine sowie Betriebsverfahren dazu | |
| WO2008025583A1 (de) | Verfahren zum kühlen von turbinenschaufeln eines schaufelkranzes sowie turbinenschaufelsegment für einen turbinenschaufelkranz mit mindestens zwei aerodynamisch profilierten schaufelblättern | |
| DE102017207028A1 (de) | Schaufelblatt für eine strömungsmaschine | |
| EP3333366A1 (de) | Turbinenschaufel mit vorderkantenkühlung | |
| DE102015209587A1 (de) | Verfahren zum Gießen einer Turbinenschaufel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20230908 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20250918 |