GB1398826A - Unshroulded internally-cooled turbine rotor blades - Google Patents

Unshroulded internally-cooled turbine rotor blades

Info

Publication number
GB1398826A
GB1398826A GB3043373A GB3043373A GB1398826A GB 1398826 A GB1398826 A GB 1398826A GB 3043373 A GB3043373 A GB 3043373A GB 3043373 A GB3043373 A GB 3043373A GB 1398826 A GB1398826 A GB 1398826A
Authority
GB
United Kingdom
Prior art keywords
blade tip
recess
wall
coolant fluid
blade
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
Application number
GB3043373A
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 GmbH
Original Assignee
MTU Motoren und Turbinen Union Muenchen GmbH
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 Motoren und Turbinen Union Muenchen GmbH filed Critical MTU Motoren und Turbinen Union Muenchen GmbH
Publication of GB1398826A publication Critical patent/GB1398826A/en
Expired 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
    • F01D5/12—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
    • 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

Landscapes

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

Abstract

1398826 Turbine rotor blades-cooling MOTOREN-UND TURBINEN-UNION MUNCHEN GmbH 26 June 1973 [27 June 1972] 30433/73 Heading FIT An unshrouded turbine rotor blade is formed with at least one duct for the flow of coolant fluid, the flow duct discharging into a recess formed at the blade tip which constitutes a rubbing blade tip, the blade tip being so formed that the coolant fluid is discharged with a reactive driving effect. The blade shown is formed with coolant fluid ducts 10 which open into a recess 13 formed at the blade tip, the recess being defined by a wall 11 the edge 12 of which is disposed adjacent the inner surface 15 of the stator casing 16. An opening 20 is formed in the wall 11 on the concave surface of the blade through which the coolant fluid discharges so exerting a reactive turning effect. In a second embodiment the wall of the recess at the concave side of the blade tip is removed and the wall at the convex side is bent over the recess so that the coolant fluid discharging from the blade tip is guided by the wall. The blade tip rotates within an annular groove formed in the inner surface of the stator casing.
GB3043373A 1972-06-27 1973-06-26 Unshroulded internally-cooled turbine rotor blades Expired GB1398826A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2231426A DE2231426C3 (en) 1972-06-27 1972-06-27 Shroudless, internally cooled axial turbine rotor blade

Publications (1)

Publication Number Publication Date
GB1398826A true GB1398826A (en) 1975-06-25

Family

ID=5848946

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3043373A Expired GB1398826A (en) 1972-06-27 1973-06-26 Unshroulded internally-cooled turbine rotor blades

Country Status (5)

Country Link
US (1) US3885886A (en)
DE (1) DE2231426C3 (en)
FR (1) FR2191594A5 (en)
GB (1) GB1398826A (en)
IT (1) IT989082B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2291935A (en) * 1992-10-27 1996-02-07 United Technologies Corp Tip seal and anti-contamination arrangement for air-cooled turbine blades
US8540487B2 (en) 2009-07-01 2013-09-24 Rolls-Royce Plc Actuatable seal for aerofoil blade tip

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4370094A (en) * 1974-03-21 1983-01-25 Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft Method of and device for avoiding rotor instability to enhance dynamic power limit of turbines and compressors
US4010531A (en) * 1975-09-02 1977-03-08 General Electric Company Tip cap apparatus and method of installation
US4274806A (en) * 1979-06-18 1981-06-23 General Electric Company Staircase blade tip
US4339227A (en) * 1980-05-09 1982-07-13 Rockwell International Corporation Inducer tip clearance and tip contour
US4411597A (en) * 1981-03-20 1983-10-25 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Tip cap for a rotor blade
US4606701A (en) * 1981-09-02 1986-08-19 Westinghouse Electric Corp. Tip structure for a cooled turbine rotor blade
US4606699A (en) * 1984-02-06 1986-08-19 General Electric Company Compressor casing recess
US4645417A (en) * 1984-02-06 1987-02-24 General Electric Company Compressor casing recess
US4682933A (en) * 1984-10-17 1987-07-28 Rockwell International Corporation Labyrinthine turbine-rotor-blade tip seal
US4761116A (en) * 1987-05-11 1988-08-02 General Electric Company Turbine blade with tip vent
US5700131A (en) * 1988-08-24 1997-12-23 United Technologies Corporation Cooled blades for a gas turbine engine
US5720431A (en) * 1988-08-24 1998-02-24 United Technologies Corporation Cooled blades for a gas turbine engine
US5224713A (en) * 1991-08-28 1993-07-06 General Electric Company Labyrinth seal with recirculating means for reducing or eliminating parasitic leakage through the seal
JP3137527B2 (en) * 1994-04-21 2001-02-26 三菱重工業株式会社 Gas turbine blade tip cooling system
US5503527A (en) * 1994-12-19 1996-04-02 General Electric Company Turbine blade having tip slot
US5951162A (en) * 1997-03-14 1999-09-14 General Signal Corporation Mixing impellers and impeller systems for mixing and blending liquids and liquid suspensions having efficient power consumption characteristics
US5997251A (en) * 1997-11-17 1999-12-07 General Electric Company Ribbed turbine blade tip
CA2366325A1 (en) * 2001-12-27 2003-06-27 Todd Howley Method of forming turbine blade root
US7059834B2 (en) * 2003-01-24 2006-06-13 United Technologies Corporation Turbine blade
US6824359B2 (en) 2003-01-31 2004-11-30 United Technologies Corporation Turbine blade
US20050137262A1 (en) * 2003-12-22 2005-06-23 Hu Patrick C. Highly concentrated pourable aqueous solutions of potassium ibuprofen, their preparation and their uses
US7175391B2 (en) 2004-07-08 2007-02-13 United Technologies Corporation Turbine blade
RU2425982C2 (en) * 2005-04-14 2011-08-10 Альстом Текнолоджи Лтд Gas turbine vane
GB0513377D0 (en) * 2005-06-30 2005-08-03 Rolls Royce Plc A blade
EP2412927A1 (en) * 2010-07-29 2012-02-01 Alstom Technology Ltd Turbine blade
GB201017797D0 (en) * 2010-10-21 2010-12-01 Rolls Royce Plc An aerofoil structure
WO2015061150A1 (en) * 2013-10-21 2015-04-30 United Technologies Corporation Incident tolerant turbine vane gap flow discouragement
CN103806950A (en) * 2014-01-20 2014-05-21 北京航空航天大学 Turbine blade provided with blade tip pressure surface trailing edge cutting structure
EP3088672A1 (en) * 2015-04-27 2016-11-02 Siemens Aktiengesellschaft Method for designing a fluid flow engine and fluid flow engine
CN107850082B (en) * 2015-10-27 2019-11-05 三菱重工业株式会社 Rotating machinery
US10808539B2 (en) * 2016-07-25 2020-10-20 Raytheon Technologies Corporation Rotor blade for a gas turbine engine
US10738644B2 (en) 2017-08-30 2020-08-11 General Electric Company Turbine blade and method of forming blade tip for eliminating turbine blade tip wear in rubbing
US11215061B2 (en) * 2020-02-04 2022-01-04 Raytheon Technologies Corporation Blade with wearable tip-rub-portions above squealer pocket

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2647368A (en) * 1949-05-09 1953-08-04 Hermann Oestrich Method and apparatus for internally cooling gas turbine blades with air, fuel, and water
FR1155958A (en) * 1956-03-28 1958-05-12 Improvements to compressible fluid turbines
US3164367A (en) * 1962-11-21 1965-01-05 Gen Electric Gas turbine blade
US3533712A (en) * 1966-02-26 1970-10-13 Gen Electric Cooled vane structure for high temperature turbines
US3446482A (en) * 1967-03-24 1969-05-27 Gen Electric Liquid cooled turbine rotor
US3730640A (en) * 1971-06-28 1973-05-01 United Aircraft Corp Seal ring for gas turbine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2291935A (en) * 1992-10-27 1996-02-07 United Technologies Corp Tip seal and anti-contamination arrangement for air-cooled turbine blades
GB2291935B (en) * 1992-10-27 1999-02-24 United Technologies Corp Tip seal and anti-contamination for turbine blades
US8540487B2 (en) 2009-07-01 2013-09-24 Rolls-Royce Plc Actuatable seal for aerofoil blade tip

Also Published As

Publication number Publication date
DE2231426B2 (en) 1974-04-25
IT989082B (en) 1975-05-20
FR2191594A5 (en) 1974-02-01
DE2231426C3 (en) 1974-11-28
DE2231426A1 (en) 1974-01-10
US3885886A (en) 1975-05-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee