EP4134523A3 - Blade base receptacle for receiving a blade - Google Patents

Blade base receptacle for receiving a blade Download PDF

Info

Publication number
EP4134523A3
EP4134523A3 EP22188295.4A EP22188295A EP4134523A3 EP 4134523 A3 EP4134523 A3 EP 4134523A3 EP 22188295 A EP22188295 A EP 22188295A EP 4134523 A3 EP4134523 A3 EP 4134523A3
Authority
EP
European Patent Office
Prior art keywords
blade
receiving
blade root
base receptacle
axis
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
Application number
EP22188295.4A
Other languages
German (de)
French (fr)
Other versions
EP4134523A2 (en
Inventor
Kilian Bayer
David Koch
Susanne Pösl
Markus ZEIS
Andreas Hieber
Jens Trübenbach
Dieter Freno
Hermann Nachtigall
Miriam Rimke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MTU Aero Engines AG
Original Assignee
MTU Aero Engines AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MTU Aero Engines AG filed Critical MTU Aero Engines AG
Publication of EP4134523A2 publication Critical patent/EP4134523A2/en
Publication of EP4134523A3 publication Critical patent/EP4134523A3/en
Pending legal-status Critical Current

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
    • F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
    • 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
    • F05D2250/20—Three-dimensional
    • F05D2250/24—Three-dimensional ellipsoidal
    • 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
    • F05D2250/711—Shape curved convex
    • 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
    • F05D2260/94—Functionality given by mechanical stress related aspects such as low cycle fatigue [LCF] of high cycle fatigue [HCF]
    • F05D2260/941—Functionality given by mechanical stress related aspects such as low cycle fatigue [LCF] of high cycle fatigue [HCF] particularly aimed at mechanical or thermal stress reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

Die vorliegende Erfindung betrifft eine Schaufelfußaufnahme (20) zum Aufnehmen eines Schaufelfußes (21) einer Laufschaufel (4.2) einer Strömungsmaschine (1), welche Schaufelfußaufnahme (20) zur radial formschlüssigen Anlage an dem Schaufelfuß (21) eine Tragflanke (25) aufweist, die bezogen auf eine Drehachse (2) zumindest anteilig nach radial innen gewandt ist, wobei die Tragflanke (25) mit einer Auswölbung (40) versehen ist, die in einem achssenkrechten Schnitt betrachtet eine zumindest abschnittsweise konvexe Form (41) hat, und auch in einem achsparallelen Schnitt betrachtet eine zumindest abschnittsweise konvexe Form (51) hat.The present invention relates to a blade root mount (20) for receiving a blade root (21) of a moving blade (4.2) of a turbomachine (1), which blade root mount (20) has a supporting flank (25) for radially form-fitting contact with the blade root (21), which faces at least partially radially inwards in relation to an axis of rotation (2), the supporting flank (25) being provided with a bulge (40) which, viewed in a perpendicular section, has an at least partially convex shape (41), and also in a section parallel to the axis has an at least partially convex shape (51).

EP22188295.4A 2021-08-11 2022-08-02 Blade base receptacle for receiving a blade Pending EP4134523A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021120876.9A DE102021120876A1 (en) 2021-08-11 2021-08-11 BLADE BASE HOLDER TO ACCEPT A BLADE

Publications (2)

Publication Number Publication Date
EP4134523A2 EP4134523A2 (en) 2023-02-15
EP4134523A3 true EP4134523A3 (en) 2023-03-08

Family

ID=82786496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22188295.4A Pending EP4134523A3 (en) 2021-08-11 2022-08-02 Blade base receptacle for receiving a blade

Country Status (3)

Country Link
US (1) US11959399B2 (en)
EP (1) EP4134523A3 (en)
DE (1) DE102021120876A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3378230A (en) * 1966-12-16 1968-04-16 Gen Electric Mounting of blades in turbomachine rotors
US4169694A (en) * 1977-07-20 1979-10-02 Electric Power Research Institute, Inc. Ceramic rotor blade having root with double curvature
US5110262A (en) * 1989-11-30 1992-05-05 Rolls-Royce Plc Attachment of a gas turbine engine blade to a turbine rotor disc

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809495A (en) 1973-03-27 1974-05-07 Westinghouse Electric Corp Turbine rotor having cushioned support surfaces for ceramic blades mounted thereon
US6764282B2 (en) * 2001-11-14 2004-07-20 United Technologies Corporation Blade for turbine engine
US7306434B2 (en) * 2004-02-12 2007-12-11 Rolls-Royce Plc Reduction of co-efficient of friction to reduce stress ratio in bearings and gas turbine parts
US7442007B2 (en) * 2005-06-02 2008-10-28 Pratt & Whitney Canada Corp. Angled blade firtree retaining system
US20080050238A1 (en) * 2006-08-24 2008-02-28 Pratt & Whitney Canada Corp. Disc firtree slot with truncation for blade attachment
EP2090751A1 (en) * 2008-02-15 2009-08-19 Siemens Aktiengesellschaft Rotor blade for a turbo engine
US9174292B2 (en) * 2008-04-16 2015-11-03 United Technologies Corporation Electro chemical grinding (ECG) quill and method to manufacture a rotor blade retention slot
US8734112B2 (en) * 2010-11-30 2014-05-27 United Technologies Corporation Asymmetrical rotor blade slot attachment
EP2546465A1 (en) * 2011-07-14 2013-01-16 Siemens Aktiengesellschaft Blade root, corresponding blade, rotor disc, and turbomachine assembly
US9297265B2 (en) * 2012-12-04 2016-03-29 General Electric Company Apparatus having engineered surface feature and method to reduce wear and friction between CMC-to-metal attachment and interface
US9739159B2 (en) * 2013-10-09 2017-08-22 General Electric Company Method and system for relieving turbine rotor blade dovetail stress
US20160305259A1 (en) 2015-04-13 2016-10-20 Charles Evans Turbine blade retention configuration
CN205172641U (en) 2015-11-30 2016-04-20 中航商用航空发动机有限责任公司 Tenon joins structure and aeroengine
FR3054855B1 (en) 2016-08-08 2020-05-01 Safran Aircraft Engines TURBOMACHINE ROTOR DISC
FR3075255B1 (en) 2017-12-14 2020-06-12 Safran Aircraft Engines DAWN OF TURBOMACHINE
DE102019210699A1 (en) 2019-07-19 2021-01-21 MTU Aero Engines AG Intermediate element for a blade-rotor disk connection in a rotor of a turbomachine and a rotor for a turbomachine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3378230A (en) * 1966-12-16 1968-04-16 Gen Electric Mounting of blades in turbomachine rotors
US4169694A (en) * 1977-07-20 1979-10-02 Electric Power Research Institute, Inc. Ceramic rotor blade having root with double curvature
US5110262A (en) * 1989-11-30 1992-05-05 Rolls-Royce Plc Attachment of a gas turbine engine blade to a turbine rotor disc

Also Published As

Publication number Publication date
US11959399B2 (en) 2024-04-16
EP4134523A2 (en) 2023-02-15
DE102021120876A1 (en) 2023-02-16
US20230046019A1 (en) 2023-02-16

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