EP0916808A3 - Turbine - Google Patents

Turbine Download PDF

Info

Publication number
EP0916808A3
EP0916808A3 EP98308747A EP98308747A EP0916808A3 EP 0916808 A3 EP0916808 A3 EP 0916808A3 EP 98308747 A EP98308747 A EP 98308747A EP 98308747 A EP98308747 A EP 98308747A EP 0916808 A3 EP0916808 A3 EP 0916808A3
Authority
EP
European Patent Office
Prior art keywords
turbine
disc
cooling air
aerofoil blades
platform
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
Application number
EP98308747A
Other languages
German (de)
French (fr)
Other versions
EP0916808B1 (en
EP0916808A2 (en
Inventor
Alec George Dodd
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
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 Rolls Royce PLC filed Critical Rolls Royce PLC
Publication of EP0916808A2 publication Critical patent/EP0916808A2/en
Publication of EP0916808A3 publication Critical patent/EP0916808A3/en
Application granted granted Critical
Publication of EP0916808B1 publication Critical patent/EP0916808B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/08—Heating, heat-insulating or cooling means
    • F01D5/081—Cooling fluid being directed on the side of the rotor disc or at the roots of the blades
    • F01D5/082—Cooling fluid being directed on the side of the rotor disc or at the roots of the blades on the side of the rotor disc
    • 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
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/08—Heating, heat-insulating or cooling means
    • F01D5/085—Heating, heat-insulating or cooling means cooling fluid circulating inside the rotor
    • 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
    • F05D2240/80—Platforms for stationary or moving blades
    • F05D2240/81—Cooled platforms

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

A turbine (10) for a gas turbine engine includes an annular array of turbine aerofoil blades (12) which are mounted on a disc (19). Each of the aerofoil blades (12) is provided with a radially inner platform (21) . Each platform (21) includes a passage (37) into which leaked cooling air flows. The passages (37) are disposed in a direction having a circumferential component so that cooling air is exhausted from them in a direction that is generally opposite to that in which the disc (19) operationally rotates.
EP98308747A 1997-11-05 1998-10-26 Turbine Expired - Lifetime EP0916808B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9723268 1997-11-05
GBGB9723268.0A GB9723268D0 (en) 1997-11-05 1997-11-05 Turbine

Publications (3)

Publication Number Publication Date
EP0916808A2 EP0916808A2 (en) 1999-05-19
EP0916808A3 true EP0916808A3 (en) 2000-01-12
EP0916808B1 EP0916808B1 (en) 2003-03-12

Family

ID=10821552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98308747A Expired - Lifetime EP0916808B1 (en) 1997-11-05 1998-10-26 Turbine

Country Status (3)

Country Link
EP (1) EP0916808B1 (en)
DE (1) DE69812044T2 (en)
GB (1) GB9723268D0 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0503681D0 (en) * 2005-02-23 2005-03-30 Rolls Royce Plc Turbine engine cooling
GB0503676D0 (en) * 2005-02-23 2005-03-30 Rolls Royce Plc A lock plate arrangement
US7465149B2 (en) 2006-03-14 2008-12-16 Rolls-Royce Plc Turbine engine cooling

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920865A (en) * 1952-10-31 1960-01-12 Rolls Royce Bladed stator or rotor constructions with means to supply a fluid internally of the blades
US3043561A (en) * 1958-12-29 1962-07-10 Gen Electric Turbine rotor ventilation system
GB1209419A (en) * 1968-06-24 1970-10-21 Westinghouse Electric Corp Side plates for turbine blades
US4453888A (en) * 1981-04-01 1984-06-12 United Technologies Corporation Nozzle for a coolable rotor blade
US5352087A (en) * 1992-02-10 1994-10-04 United Technologies Corporation Cooling fluid ejector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2920865A (en) * 1952-10-31 1960-01-12 Rolls Royce Bladed stator or rotor constructions with means to supply a fluid internally of the blades
US3043561A (en) * 1958-12-29 1962-07-10 Gen Electric Turbine rotor ventilation system
GB1209419A (en) * 1968-06-24 1970-10-21 Westinghouse Electric Corp Side plates for turbine blades
US4453888A (en) * 1981-04-01 1984-06-12 United Technologies Corporation Nozzle for a coolable rotor blade
US5352087A (en) * 1992-02-10 1994-10-04 United Technologies Corporation Cooling fluid ejector

Also Published As

Publication number Publication date
DE69812044D1 (en) 2003-04-17
EP0916808B1 (en) 2003-03-12
EP0916808A2 (en) 1999-05-19
GB9723268D0 (en) 1998-01-07
DE69812044T2 (en) 2003-08-21

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