NL194700B - Axiale stromingsturbine voor een gasturbinemotor. - Google Patents

Axiale stromingsturbine voor een gasturbinemotor.

Info

Publication number
NL194700B
NL194700B NL9000541A NL9000541A NL194700B NL 194700 B NL194700 B NL 194700B NL 9000541 A NL9000541 A NL 9000541A NL 9000541 A NL9000541 A NL 9000541A NL 194700 B NL194700 B NL 194700B
Authority
NL
Netherlands
Prior art keywords
axial flow
turbine
gas turbine
turbine engine
engine
Prior art date
Application number
NL9000541A
Other languages
English (en)
Other versions
NL194700C (nl
NL9000541A (nl
Original Assignee
United Technologies Corp
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 to US07/236,094 priority Critical patent/US5667359A/en
Priority to GB9000456A priority patent/GB2319567B/en
Priority claimed from GB9400380A external-priority patent/GB2315818B/en
Priority to GB9400380A priority patent/GB2315818B/en
Priority to CA002007633A priority patent/CA2007633C/en
Priority to SE9000113A priority patent/SE470600B/sv
Priority to AU48813/90A priority patent/AU684038B1/en
Priority to SE9000113D priority patent/SE9000113L/xx
Priority claimed from AU48813/90A external-priority patent/AU684038B1/en
Priority to IT04756490A priority patent/IT1283979B1/it
Priority to DE4003802A priority patent/DE4003802C2/de
Priority to NL9000541A priority patent/NL194700C/nl
Application filed by United Technologies Corp filed Critical United Technologies Corp
Priority to JP02800007A priority patent/JP3040158B2/ja
Publication of NL9000541A publication Critical patent/NL9000541A/nl
Publication of NL194700B publication Critical patent/NL194700B/nl
Publication of NL194700C publication Critical patent/NL194700C/nl
Application granted granted Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/08Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • F01D11/10Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using sealing fluid, e.g. steam
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12Blades
    • F01D5/14Form or construction
    • F01D5/18Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
    • F01D5/186Film cooling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12Blades
    • F01D5/14Form or construction
    • F01D5/18Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
    • F01D5/187Convection cooling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12Blades
    • F01D5/14Form or construction
    • F01D5/18Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
    • F01D5/187Convection cooling
    • F01D5/188Convection cooling with an insert in the blade cavity to guide the cooling fluid, e.g. forming a separation wall
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12Blades
    • F01D5/14Form or construction
    • F01D5/20Specially-shaped blade tips to seal space between tips and stator
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00Function
    • F05D2260/20Heat transfer, e.g. cooling
    • F05D2260/202Heat transfer, e.g. cooling by film cooling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00Function
    • F05D2260/20Heat transfer, e.g. cooling
    • F05D2260/232Heat transfer, e.g. cooling characterized by the cooling medium
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00Aeronautics or air transport
    • Y02T50/60Efficient propulsion technologies, e.g. for aircraft

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
NL9000541A 1988-07-29 1990-03-09 Axiale stromingsturbine voor een gasturbinemotor. NL194700C (nl)

Priority Applications (11)

Application Number Priority Date Filing Date Title
US07/236,094 US5667359A (en) 1988-08-24 1988-08-24 Clearance control for the turbine of a gas turbine engine
GB9400380A GB2315818B (en) 1988-07-29 1990-01-09 Clearence control for the turbine of a gas turbine engine
GB9000456A GB2319567B (en) 1988-07-29 1990-01-09 Clearance control for the turbine of a gas turbine engine
SE9000113A SE470600B (sv) 1988-07-29 1990-01-12 Spelstyrning för turbinen vid en gasturbinmotor
AU48813/90A AU684038B1 (en) 1988-07-29 1990-01-12 Clearance control for the turbine of a gas turbine engine
SE9000113D SE9000113L (sv) 1988-07-29 1990-01-12 Spelstyrning för turbinen vid en gasturbinmotor
CA002007633A CA2007633C (en) 1988-07-29 1990-01-12 Clearance control for the turbine of a gas turbine engine
IT04756490A IT1283979B1 (it) 1988-07-29 1990-01-24 Perfezionamento nelle turbine a flusso assiale
DE4003802A DE4003802C2 (de) 1988-08-24 1990-02-08 Minimale Leckströmung zwischen Schaufelspitze und gegenüberliegender Gehäusewand
NL9000541A NL194700C (nl) 1988-08-24 1990-03-09 Axiale stromingsturbine voor een gasturbinemotor.
JP02800007A JP3040158B2 (ja) 1988-08-24 1990-03-16 ガスタービンエンジン用軸流タービン

Applications Claiming Priority (20)

Application Number Priority Date Filing Date Title
US23609488 1988-08-24
US07/236,094 US5667359A (en) 1988-08-24 1988-08-24 Clearance control for the turbine of a gas turbine engine
GB9000456 1990-01-09
GB9400380 1990-01-09
GB9400380A GB2315818B (en) 1988-07-29 1990-01-09 Clearence control for the turbine of a gas turbine engine
GB9000456A GB2319567B (en) 1988-07-29 1990-01-09 Clearance control for the turbine of a gas turbine engine
CA2007633 1990-01-12
AU48813/90A AU684038B1 (en) 1988-07-29 1990-01-12 Clearance control for the turbine of a gas turbine engine
CA002007633A CA2007633C (en) 1988-07-29 1990-01-12 Clearance control for the turbine of a gas turbine engine
AU4881390 1990-01-12
SE9000113 1990-01-12
SE9000113A SE470600B (sv) 1988-07-29 1990-01-12 Spelstyrning för turbinen vid en gasturbinmotor
IT4756490 1990-01-24
IT04756490A IT1283979B1 (it) 1988-07-29 1990-01-24 Perfezionamento nelle turbine a flusso assiale
DE4003802 1990-02-08
DE4003802A DE4003802C2 (de) 1988-08-24 1990-02-08 Minimale Leckströmung zwischen Schaufelspitze und gegenüberliegender Gehäusewand
NL9000541 1990-03-09
NL9000541A NL194700C (nl) 1988-08-24 1990-03-09 Axiale stromingsturbine voor een gasturbinemotor.
JP80000790 1990-03-16
JP02800007A JP3040158B2 (ja) 1988-08-24 1990-03-16 ガスタービンエンジン用軸流タービン

Publications (3)

Publication Number Publication Date
NL9000541A NL9000541A (nl) 1998-01-05
NL194700B true NL194700B (nl) 2002-08-01
NL194700C NL194700C (nl) 2002-12-03

Family

ID=27578966

Family Applications (1)

Application Number Title Priority Date Filing Date
NL9000541A NL194700C (nl) 1988-07-29 1990-03-09 Axiale stromingsturbine voor een gasturbinemotor.

Country Status (4)

Country Link
US (1) US5667359A (nl)
JP (1) JP3040158B2 (nl)
DE (1) DE4003802C2 (nl)
NL (1) NL194700C (nl)

Families Citing this family (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50003371D1 (de) 1999-03-09 2003-09-25 Siemens Ag Turbinenschaufel und verfahren zur herstellung einer turbinenschaufel
DE10001109B4 (de) * 2000-01-13 2012-01-19 Alstom Technology Ltd. Gekühlte Schaufel für eine Gasturbine
US6325593B1 (en) * 2000-02-18 2001-12-04 General Electric Company Ceramic turbine airfoils with cooled trailing edge blocks
EP1207269B1 (de) * 2000-11-16 2005-05-11 Siemens Aktiengesellschaft Gasturbinenschaufel
US6502303B2 (en) * 2001-05-07 2003-01-07 Chromalloy Gas Turbine Corporation Method of repairing a turbine blade tip
US6502304B2 (en) * 2001-05-15 2003-01-07 General Electric Company Turbine airfoil process sequencing for optimized tip performance
GB0127902D0 (en) * 2001-11-21 2002-01-16 Rolls Royce Plc Gas turbine engine aerofoil
US7186084B2 (en) * 2003-11-19 2007-03-06 General Electric Company Hot gas path component with mesh and dimpled cooling
US6984102B2 (en) * 2003-11-19 2006-01-10 General Electric Company Hot gas path component with mesh and turbulated cooling
JP4191578B2 (ja) * 2003-11-21 2008-12-03 三菱重工業株式会社 ガスタービンエンジンのタービン冷却翼
DE10355241A1 (de) * 2003-11-26 2005-06-30 Rolls-Royce Deutschland Ltd & Co Kg Strömungsarbeitsmaschine mit Fluidzufuhr
US7131818B2 (en) * 2004-11-02 2006-11-07 United Technologies Corporation Airfoil with three-pass serpentine cooling channel and microcircuit
US7334991B2 (en) * 2005-01-07 2008-02-26 Siemens Power Generation, Inc. Turbine blade tip cooling system
US7416390B2 (en) * 2005-03-29 2008-08-26 Siemens Power Generation, Inc. Turbine blade leading edge cooling system
US20070122280A1 (en) * 2005-11-30 2007-05-31 General Electric Company Method and apparatus for reducing axial compressor blade tip flow
US7695246B2 (en) * 2006-01-31 2010-04-13 United Technologies Corporation Microcircuits for small engines
US7534089B2 (en) * 2006-07-18 2009-05-19 Siemens Energy, Inc. Turbine airfoil with near wall multi-serpentine cooling channels
US7513744B2 (en) * 2006-07-18 2009-04-07 United Technologies Corporation Microcircuit cooling and tip blowing
US7581928B1 (en) * 2006-07-28 2009-09-01 United Technologies Corporation Serpentine microcircuits for hot gas migration
US7520725B1 (en) 2006-08-11 2009-04-21 Florida Turbine Technologies, Inc. Turbine airfoil with near-wall leading edge multi-holes cooling
US7722324B2 (en) * 2006-09-05 2010-05-25 United Technologies Corporation Multi-peripheral serpentine microcircuits for high aspect ratio blades
US7556476B1 (en) 2006-11-16 2009-07-07 Florida Turbine Technologies, Inc. Turbine airfoil with multiple near wall compartment cooling
US7837441B2 (en) * 2007-02-16 2010-11-23 United Technologies Corporation Impingement skin core cooling for gas turbine engine blade
US7946815B2 (en) * 2007-03-27 2011-05-24 Siemens Energy, Inc. Airfoil for a gas turbine engine
US7901181B1 (en) * 2007-05-02 2011-03-08 Florida Turbine Technologies, Inc. Turbine blade with triple spiral serpentine flow cooling circuits
US8083485B2 (en) * 2007-08-15 2011-12-27 United Technologies Corporation Angled tripped airfoil peanut cavity
US7857589B1 (en) 2007-09-21 2010-12-28 Florida Turbine Technologies, Inc. Turbine airfoil with near-wall cooling
US8297927B1 (en) * 2008-03-04 2012-10-30 Florida Turbine Technologies, Inc. Near wall multiple impingement serpentine flow cooled airfoil
US8393867B2 (en) * 2008-03-31 2013-03-12 United Technologies Corporation Chambered airfoil cooling
US8210814B2 (en) * 2008-06-18 2012-07-03 General Electric Company Crossflow turbine airfoil
US8167558B2 (en) * 2009-01-19 2012-05-01 Siemens Energy, Inc. Modular serpentine cooling systems for turbine engine components
US7956486B2 (en) * 2009-05-23 2011-06-07 Abel Echemendia Windmill electric generator for hydroelectric power system
GB201101909D0 (en) * 2011-02-04 2011-03-23 Rolls Royce Plc A method of tip grinding the blades of a gas turbine rotor
US9011077B2 (en) 2011-04-20 2015-04-21 Siemens Energy, Inc. Cooled airfoil in a turbine engine
CH705185A1 (de) * 2011-06-29 2012-12-31 Alstom Technology Ltd Schaufel für eine Gasturbine sowie Verfahren zum Herstellen einer solchen Schaufel.
US9151173B2 (en) 2011-12-15 2015-10-06 General Electric Company Use of multi-faceted impingement openings for increasing heat transfer characteristics on gas turbine components
US9638057B2 (en) 2013-03-14 2017-05-02 Rolls-Royce North American Technologies, Inc. Augmented cooling system
GB201314222D0 (en) * 2013-08-08 2013-09-25 Rolls Royce Plc Aerofoil
US9765642B2 (en) * 2013-12-30 2017-09-19 General Electric Company Interior cooling circuits in turbine blades
US10494939B2 (en) 2014-02-13 2019-12-03 United Technologies Corporation Air shredder insert
EP3140515B1 (en) 2014-05-08 2019-04-03 Siemens Energy, Inc. Airfoil cooling with internal cavity displacement features
US10605094B2 (en) 2015-01-21 2020-03-31 United Technologies Corporation Internal cooling cavity with trip strips
US10190420B2 (en) * 2015-02-10 2019-01-29 United Technologies Corporation Flared crossovers for airfoils
FR3034128B1 (fr) 2015-03-23 2017-04-14 Snecma Noyau ceramique pour aube de turbine multi-cavites
US10808547B2 (en) 2016-02-08 2020-10-20 General Electric Company Turbine engine airfoil with cooling
US10352177B2 (en) 2016-02-16 2019-07-16 General Electric Company Airfoil having impingement openings
US11162370B2 (en) * 2016-05-19 2021-11-02 Rolls-Royce Corporation Actively cooled component
CN106437860A (zh) * 2016-11-18 2017-02-22 中国航空工业集团公司金城南京机电液压工程研究中心 一种冲压空气涡轮叶片
CN107605544B (zh) * 2017-08-14 2019-05-10 西北工业大学 一种缘板波浪形开槽喷射的轮缘密封结构
US11566527B2 (en) 2018-12-18 2023-01-31 General Electric Company Turbine engine airfoil and method of cooling
US11499433B2 (en) 2018-12-18 2022-11-15 General Electric Company Turbine engine component and method of cooling
US11352889B2 (en) 2018-12-18 2022-06-07 General Electric Company Airfoil tip rail and method of cooling
US10767492B2 (en) 2018-12-18 2020-09-08 General Electric Company Turbine engine airfoil
US11174736B2 (en) 2018-12-18 2021-11-16 General Electric Company Method of forming an additively manufactured component
CN209324436U (zh) * 2019-02-14 2019-08-30 高晟钧 一种航空发动机涡轮叶片
CN109973154B (zh) * 2019-04-02 2019-12-06 高晟钧 一种带有冷却结构的航空发动机涡轮叶片
US10844728B2 (en) 2019-04-17 2020-11-24 General Electric Company Turbine engine airfoil with a trailing edge
PL430870A1 (pl) 2019-08-14 2021-02-22 Avio Polska Spółka Z Ograniczoną Odpowiedzialnością Uszczelnienie do zmniejszania wycieku przepływu wewnątrz silnika z turbiną gazową
CN112483191B (zh) * 2020-11-30 2022-07-19 日照黎阳工业装备有限公司 一种适用于燃气轮机具备对流换热功能的涡轮叶片
US20240301799A1 (en) * 2023-03-07 2024-09-12 Raytheon Technologies Corporation Airfoil tip arrangement for gas turbine engine

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3533712A (en) * 1966-02-26 1970-10-13 Gen Electric Cooled vane structure for high temperature turbines
US3542486A (en) * 1968-09-27 1970-11-24 Gen Electric Film cooling of structural members in gas turbine engines
US3810711A (en) * 1972-09-22 1974-05-14 Gen Motors Corp Cooled turbine blade and its manufacture
US3899267A (en) * 1973-04-27 1975-08-12 Gen Electric Turbomachinery blade tip cap configuration
US3854842A (en) * 1973-04-30 1974-12-17 Gen Electric Rotor blade having improved tip cap
US3994622A (en) * 1975-11-24 1976-11-30 United Technologies Corporation Coolable turbine blade
GB1552536A (en) * 1977-05-05 1979-09-12 Rolls Royce Rotor blade for a gas turbine engine
US4142824A (en) * 1977-09-02 1979-03-06 General Electric Company Tip cooling for turbine blades
JPS55104506A (en) * 1979-02-02 1980-08-11 Hitachi Ltd Gas-turbine blade
US4390320A (en) * 1980-05-01 1983-06-28 General Electric Company Tip cap for a rotor blade and method of replacement
NO811830L (no) * 1980-06-05 1981-12-07 United Technologies Corp Slipende, kjoelbar tupphette for rotorblader.
US4519745A (en) * 1980-09-19 1985-05-28 Rockwell International Corporation Rotor blade and stator vane using ceramic shell
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
MX155481A (es) * 1981-09-02 1988-03-17 Westinghouse Electric Corp Pala de rotor de turbina
US4606701A (en) * 1981-09-02 1986-08-19 Westinghouse Electric Corp. Tip structure for a cooled turbine rotor blade
JPS5847104A (ja) * 1981-09-11 1983-03-18 Agency Of Ind Science & Technol ガスタ−ビンのタ−ビン動翼
US4589823A (en) * 1984-04-27 1986-05-20 General Electric Company Rotor blade tip
US4540339A (en) * 1984-06-01 1985-09-10 The United States Of America As Represented By The Secretary Of The Air Force One-piece HPTR blade squealer tip
DE3850681T2 (de) * 1987-02-06 1995-03-09 Wolfgang P Weinhold Rotorblatt.
US4753575A (en) * 1987-08-06 1988-06-28 United Technologies Corporation Airfoil with nested cooling channels

Also Published As

Publication number Publication date
NL194700C (nl) 2002-12-03
US5667359A (en) 1997-09-16
DE4003802C2 (de) 2001-12-13
DE4003802A1 (de) 1998-01-15
JPH09296704A (ja) 1997-11-18
NL9000541A (nl) 1998-01-05
JP3040158B2 (ja) 2000-05-08

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Effective date: 20081001