FR2275975A5 - Gas turbine blade with cooling passages - holes parallel to blade axis provide surface layer of cool air - Google Patents

Gas turbine blade with cooling passages - holes parallel to blade axis provide surface layer of cool air

Info

Publication number
FR2275975A5
FR2275975A5 FR7309882A FR7309882A FR2275975A5 FR 2275975 A5 FR2275975 A5 FR 2275975A5 FR 7309882 A FR7309882 A FR 7309882A FR 7309882 A FR7309882 A FR 7309882A FR 2275975 A5 FR2275975 A5 FR 2275975A5
Authority
FR
France
Prior art keywords
blade
gas turbine
holes
surface layer
cool air
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
FR7309882A
Other languages
French (fr)
Inventor
Edouard Charles Emile Assinot
Michel Leonard Cuvillier
Paul Charles Marie Martinat
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.)
Safran Aircraft Engines SAS
Original Assignee
SNECMA SAS
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 SNECMA SAS filed Critical SNECMA SAS
Priority to FR7309882A priority Critical patent/FR2275975A5/en
Application granted granted Critical
Publication of FR2275975A5 publication Critical patent/FR2275975A5/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
    • F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
    • F01D5/225—Blade-to-blade connections, e.g. for damping vibrations by shrouding
    • 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
    • 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
    • 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
    • F05D2260/201—Heat transfer, e.g. cooling by impingement of a fluid

Landscapes

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

Abstract

The blade of an axial flow gas turbine has a fir tree type root (1) with a platform (3) carrying a profiled section (4) surmounted by a platform (6) with sealing ribs (7). The upper half of the profiled section is reduced in area of cross section. Holes (10) of small diameter extend upwards from the tip of the root (1) to break through the blade surface in the region (8) of the reduction in cross section. The holes form elliptical openings (12) in the blade surface. Cooling air is supplied to the holes (10) and emerges from the openings (12) to form a cool layer over the upper part of the blade.
FR7309882A 1973-03-20 1973-03-20 Gas turbine blade with cooling passages - holes parallel to blade axis provide surface layer of cool air Expired FR2275975A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7309882A FR2275975A5 (en) 1973-03-20 1973-03-20 Gas turbine blade with cooling passages - holes parallel to blade axis provide surface layer of cool air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7309882A FR2275975A5 (en) 1973-03-20 1973-03-20 Gas turbine blade with cooling passages - holes parallel to blade axis provide surface layer of cool air

Publications (1)

Publication Number Publication Date
FR2275975A5 true FR2275975A5 (en) 1976-01-16

Family

ID=9116547

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7309882A Expired FR2275975A5 (en) 1973-03-20 1973-03-20 Gas turbine blade with cooling passages - holes parallel to blade axis provide surface layer of cool air

Country Status (1)

Country Link
FR (1) FR2275975A5 (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127358A (en) * 1976-04-08 1978-11-28 Rolls-Royce Limited Blade or vane for a gas turbine engine
FR2405357A1 (en) * 1977-10-08 1979-05-04 Rolls Royce MOBILE REFRIGERATED VANE FOR GAS TURBINE ENGINE
EP0194883A2 (en) * 1985-03-13 1986-09-17 Westinghouse Electric Corporation Fabricated blade with spanwise cooling passages for gas turbine
US5482435A (en) * 1994-10-26 1996-01-09 Westinghouse Electric Corporation Gas turbine blade having a cooled shroud
EP0927814A1 (en) * 1997-06-23 1999-07-07 Mitsubishi Heavy Industries, Ltd. Tip shroud for cooled blade of gas turbine
US6152695A (en) * 1998-02-04 2000-11-28 Mitsubishi Heavy Industries, Ltd. Gas turbine moving blade
EP1234949A2 (en) * 2001-02-26 2002-08-28 United Technologies Corporation Cooling air inlet configuration for a blade root
US6499950B2 (en) * 1999-04-01 2002-12-31 Fred Thomas Willett Cooling circuit for a gas turbine bucket and tip shroud
US6761534B1 (en) 1999-04-05 2004-07-13 General Electric Company Cooling circuit for a gas turbine bucket and tip shroud
JP2006266112A (en) * 2005-03-22 2006-10-05 Mitsubishi Heavy Ind Ltd Turbine moving blade
WO2014009075A1 (en) * 2012-07-12 2014-01-16 Siemens Aktiengesellschaft Air-cooled turbine rotor blade for a gas turbine
US20150096306A1 (en) * 2013-10-08 2015-04-09 General Electric Company Gas turbine airfoil with cooling enhancement
EP3199765A1 (en) * 2016-01-28 2017-08-02 United Technologies Corporation Turbine blade attachment rails for attachment fillet stress reduction
US10047611B2 (en) 2016-01-28 2018-08-14 United Technologies Corporation Turbine blade attachment curved rib stiffeners
US10301943B2 (en) 2017-06-30 2019-05-28 General Electric Company Turbomachine rotor blade
US10502069B2 (en) 2017-06-07 2019-12-10 General Electric Company Turbomachine rotor blade
US10577945B2 (en) 2017-06-30 2020-03-03 General Electric Company Turbomachine rotor blade
US10590777B2 (en) 2017-06-30 2020-03-17 General Electric Company Turbomachine rotor blade
US11060407B2 (en) 2017-06-22 2021-07-13 General Electric Company Turbomachine rotor blade

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127358A (en) * 1976-04-08 1978-11-28 Rolls-Royce Limited Blade or vane for a gas turbine engine
FR2405357A1 (en) * 1977-10-08 1979-05-04 Rolls Royce MOBILE REFRIGERATED VANE FOR GAS TURBINE ENGINE
EP0194883A2 (en) * 1985-03-13 1986-09-17 Westinghouse Electric Corporation Fabricated blade with spanwise cooling passages for gas turbine
EP0194883A3 (en) * 1985-03-13 1989-01-18 Westinghouse Electric Corporation Fabricated blade with spanwise cooling passages for gas turbine
US5482435A (en) * 1994-10-26 1996-01-09 Westinghouse Electric Corporation Gas turbine blade having a cooled shroud
WO1996013654A1 (en) * 1994-10-26 1996-05-09 Westinghouse Electric Corporation Gas turbine blade having a cooled shroud
EP0927814A1 (en) * 1997-06-23 1999-07-07 Mitsubishi Heavy Industries, Ltd. Tip shroud for cooled blade of gas turbine
EP0927814A4 (en) * 1997-06-23 2001-02-28 Mitsubishi Heavy Ind Ltd Tip shroud for cooled blade of gas turbine
US6152695A (en) * 1998-02-04 2000-11-28 Mitsubishi Heavy Industries, Ltd. Gas turbine moving blade
US6499950B2 (en) * 1999-04-01 2002-12-31 Fred Thomas Willett Cooling circuit for a gas turbine bucket and tip shroud
US6761534B1 (en) 1999-04-05 2004-07-13 General Electric Company Cooling circuit for a gas turbine bucket and tip shroud
EP1234949A3 (en) * 2001-02-26 2004-01-14 United Technologies Corporation Cooling air inlet configuration for a blade root
EP1234949A2 (en) * 2001-02-26 2002-08-28 United Technologies Corporation Cooling air inlet configuration for a blade root
JP2006266112A (en) * 2005-03-22 2006-10-05 Mitsubishi Heavy Ind Ltd Turbine moving blade
US20150167476A1 (en) * 2012-07-12 2015-06-18 Siemens Aktiengesellschaft Air-cooled turbine rotor blade for a gas turbine
CN104471191A (en) * 2012-07-12 2015-03-25 西门子公司 Air-cooled turbine rotor blade for a gas turbine
WO2014009075A1 (en) * 2012-07-12 2014-01-16 Siemens Aktiengesellschaft Air-cooled turbine rotor blade for a gas turbine
JP2015522127A (en) * 2012-07-12 2015-08-03 シーメンス アクティエンゲゼルシャフト Air-cooled turbine blades for gas turbines
US20150096306A1 (en) * 2013-10-08 2015-04-09 General Electric Company Gas turbine airfoil with cooling enhancement
EP3199765A1 (en) * 2016-01-28 2017-08-02 United Technologies Corporation Turbine blade attachment rails for attachment fillet stress reduction
US10047611B2 (en) 2016-01-28 2018-08-14 United Technologies Corporation Turbine blade attachment curved rib stiffeners
US10502069B2 (en) 2017-06-07 2019-12-10 General Electric Company Turbomachine rotor blade
US11060407B2 (en) 2017-06-22 2021-07-13 General Electric Company Turbomachine rotor blade
US10301943B2 (en) 2017-06-30 2019-05-28 General Electric Company Turbomachine rotor blade
US10577945B2 (en) 2017-06-30 2020-03-03 General Electric Company Turbomachine rotor blade
US10590777B2 (en) 2017-06-30 2020-03-17 General Electric Company Turbomachine rotor blade

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ST Notification of lapse