DE9422418U1 - Device for reducing stresses at the tip of turbine or compressor blades - Google Patents

Device for reducing stresses at the tip of turbine or compressor blades

Info

Publication number
DE9422418U1
DE9422418U1 DE9422418U DE9422418U DE9422418U1 DE 9422418 U1 DE9422418 U1 DE 9422418U1 DE 9422418 U DE9422418 U DE 9422418U DE 9422418 U DE9422418 U DE 9422418U DE 9422418 U1 DE9422418 U1 DE 9422418U1
Authority
DE
Germany
Prior art keywords
blade
trailing edge
side surfaces
leading
edge
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.)
Expired - Lifetime
Application number
DE9422418U
Other languages
German (de)
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.)
Pratt and Whitney Co Inc
Raytheon Technologies Corp
Original Assignee
United Technologies Corp
Pratt and Whitney Co Inc
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
Priority claimed from US08/138,521 external-priority patent/US5476363A/en
Application filed by United Technologies Corp, Pratt and Whitney Co Inc filed Critical United Technologies Corp
Publication of DE9422418U1 publication Critical patent/DE9422418U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
    • F04D29/324—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
    • F01D5/20—Specially-shaped blade tips to seal space between tips and stator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/083—Sealings especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/388—Blades characterised by construction
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • F05D2300/17—Alloys
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/20—Oxide or non-oxide ceramics
    • F05D2300/22—Non-oxide ceramics
    • F05D2300/228—Nitrides
    • F05D2300/2282—Nitrides of boron
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/603—Composites; e.g. fibre-reinforced
    • F05D2300/6032—Metal matrix composites [MMC]
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/611—Coating

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (10)

1. Schaufel für eine Turbinenmaschine, wobei die Schaufel mit einer Umfangsdichtung in Kontakt steht und die Schaufel aufweist:
  • a) einen Fuß und eine Schaufelspitze, die eine vorlaufende und eine nachlaufende Kante, einander abgewandte Seitenflächen und einen Mittelteil aufweist, der von der vorlaufenden Kante, der nachlaufenden Kante und den einander abgewandten Seitenflächen begrenzt ist, und
  • b) eine Abfasung am Übergang wenigstens einer der abgewandten Seitenflächen und dem Mittelteil wo hohe Spannungen auftreten, wobei die Abfasung sich wenigstens über einen Teilbereich zwischen der vorlaufenden Kante und der nachlaufenden Kante hin erstreckt.
1. Blade for a turbine machine, wherein the blade is in contact with a peripheral seal and the blade has:
  • a) a foot and a blade tip, which has a leading and a trailing edge, mutually facing side surfaces and a central part which is bounded by the leading edge, the trailing edge and the mutually facing side surfaces, and
  • b) a chamfer at the transition of at least one of the opposite side surfaces and the central part where high tensions occur, the chamfer extending at least over a partial area between the leading edge and the trailing edge.
2. Schaufel nach Anspruch 1, bei welcher eine abschleifbare Beschichtung auf dem Mittelteil der Schaufelspitze angeordnet ist und sich wenigstens über einen Teilbereich zwischen der vorlaufenden Kante und der nachlaufenden Kante hin erstreckt.2. A scoop according to claim 1, in which a grindable Coating arranged on the middle part of the blade tip is and at least over a partial area between the leading edge and trailing edge extends. 3. Schaufel nach Anspruch 2, bei welcher die abschleifbare Beschichtung in eine Nickellegierungsmatrix eingebettete Teilchen aus kubischem Bornitrid aufweist.3. A blade according to claim 2, in which the grindable Coating embedded in a nickel alloy matrix Has cubic boron nitride particles. 4. Schaufel nach Anspruch 2, bei welcher die abschleifbare Beschichtung durch Elektroplatierung aufgebracht ist.4. A scoop according to claim 2, wherein the grindable Coating is applied by electroplating. 5. Schaufel nach Anspruch 2, bei welcher die abschleifbare Beschichtung durch Plasmaspritzen aufgebracht ist.5. A blade according to claim 2, in which the grindable Coating is applied by plasma spraying. 6. Schaufel nach Anspruch 1, bei welcher die Abfasung hinter der vorlaufenden Kante beginnt und vor der nachlaufenden Kante endet.6. A scoop according to claim 1, wherein the chamfer behind the leading edge begins and before the trailing edge ends. 7. Schaufel nach Anspruch 1, bei welcher die Schaufelspitze gehämmert oder gewalzt ist. 7. A blade according to claim 1, wherein the blade tip is hammered or rolled.   8. Schaufel mit verbesserter Ermüdungsfestigkeit zur Verwendung in einer Turbinenmaschine, wobei die Schaufel mit einer Umfangsdichtung in Kontakt steht, mit:
  • a) einem Fuß und einer Schaufelspitze, die eine vorlaufende und eine nachlaufende Kante, einander abgewandte Seitenflächen und einen Mittelteil aufweist, der von der vorlaufenden und der nachlaufenden Kante sowie den einander angewandten Seitenflächen begrenzt ist, und
  • b) einer abschleifbaren Beschichtung, die auf dem Mittelteil der Schaufelspitze derart angeordnet ist, daß ihr Umfangsrand gegenüber den einander abgewandten Seitenflächen zurückgesetzt ist und sie wenigstens einen Teil zwischen der vorlaufenden Kante und der nachlaufenden Kante überdeckt.
8. A blade with improved fatigue strength for use in a turbine engine, the blade being in contact with a peripheral seal, with:
  • a) a foot and a blade tip which has a leading and a trailing edge, mutually facing side surfaces and a central part which is delimited by the leading and trailing edge and the mutually applied side surfaces, and
  • b) a grindable coating which is arranged on the middle part of the blade tip in such a way that its peripheral edge is set back relative to the side surfaces facing away from one another and covers at least a part between the leading edge and the trailing edge.
9. Schaufel nach Anspruch 8, bei welcher die abschleifbare Beschichtung durch Elektroplatierung aufgebracht ist.9. A scoop according to claim 8, wherein the grindable Coating is applied by electroplating. 10. Schaufel nach Anspruch 8, bei welcher die abschleifbare Beschichtung durch Plasmaspritzen aufgebracht ist.10. A blade according to claim 8, wherein the grindable Coating is applied by plasma spraying.
DE9422418U 1993-10-15 1994-10-10 Device for reducing stresses at the tip of turbine or compressor blades Expired - Lifetime DE9422418U1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/138,521 US5476363A (en) 1993-10-15 1993-10-15 Method and apparatus for reducing stress on the tips of turbine or compressor blades
DE4436186A DE4436186C2 (en) 1993-10-15 1994-10-10 Turbine or compressor blade with a reduced-voltage tip

Publications (1)

Publication Number Publication Date
DE9422418U1 true DE9422418U1 (en) 2001-09-13

Family

ID=25940920

Family Applications (1)

Application Number Title Priority Date Filing Date
DE9422418U Expired - Lifetime DE9422418U1 (en) 1993-10-15 1994-10-10 Device for reducing stresses at the tip of turbine or compressor blades

Country Status (1)

Country Link
DE (1) DE9422418U1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008008275A1 (en) * 2008-02-07 2009-08-20 Hägele GmbH Fan blade for fan wheels, particularly axial blowers, is made of material from radially outside, where material is removed during circulation of fan wheel by contacting to fixed frame
US9353632B2 (en) 2010-10-21 2016-05-31 Rolls-Royce Plc Aerofoil structure
US9399918B2 (en) 2012-08-09 2016-07-26 Mtu Aero Engines Gmbh Blade for a continuous-flow machine and a continuous-flow machine
DE102019116746A1 (en) * 2019-06-20 2020-12-24 Rolls-Royce Deutschland Ltd & Co Kg Rotor assembly and manufacturing process

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008008275A1 (en) * 2008-02-07 2009-08-20 Hägele GmbH Fan blade for fan wheels, particularly axial blowers, is made of material from radially outside, where material is removed during circulation of fan wheel by contacting to fixed frame
US9353632B2 (en) 2010-10-21 2016-05-31 Rolls-Royce Plc Aerofoil structure
US9399918B2 (en) 2012-08-09 2016-07-26 Mtu Aero Engines Gmbh Blade for a continuous-flow machine and a continuous-flow machine
DE102019116746A1 (en) * 2019-06-20 2020-12-24 Rolls-Royce Deutschland Ltd & Co Kg Rotor assembly and manufacturing process

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