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CA2007633A1 - Clearance control for the turbine of a gas turbine engine - Google Patents

Clearance control for the turbine of a gas turbine engine

Info

Publication number
CA2007633A1
CA2007633A1 CA2007633A CA2007633A CA2007633A1 CA 2007633 A1 CA2007633 A1 CA 2007633A1 CA 2007633 A CA2007633 A CA 2007633A CA 2007633 A CA2007633 A CA 2007633A CA 2007633 A1 CA2007633 A1 CA 2007633A1
Authority
CA
Canada
Prior art keywords
turbine
tip
blade
gas turbine
clearance control
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
CA2007633A
Other languages
French (fr)
Other versions
CA2007633C (en
Inventor
Douglas J. Dietrich
Frank W. Huber
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.)
RTX Corp
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 claimed from US07/226,094 external-priority patent/US4921166A/en
Priority to US07/236,094 priority Critical patent/US5667359A/en
Priority claimed from GB9000456A external-priority patent/GB2319567B/en
Priority to GB9000456A priority patent/GB2319567B/en
Priority to GB9400380A priority patent/GB2315818B/en
Priority to SE9000113D priority patent/SE9000113L/en
Application filed by United Technologies Corp filed Critical United Technologies Corp
Priority to SE9000113A priority patent/SE470600B/en
Priority to AU48813/90A priority patent/AU684038B1/en
Priority to CA002007633A priority patent/CA2007633C/en
Priority to IT04756490A priority patent/IT1283979B1/en
Priority to DE4003802A priority patent/DE4003802C2/en
Priority claimed from DE4003802A external-priority patent/DE4003802C2/en
Priority to NL9000541A priority patent/NL194700C/en
Priority to JP02800007A priority patent/JP3040158B2/en
Publication of CA2007633A1 publication Critical patent/CA2007633A1/en
Publication of CA2007633C publication Critical patent/CA2007633C/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
    • F01D11/10—Preventing 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
    • 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
    • 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
    • F05D2260/202—Heat transfer, e.g. cooling by film 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
    • F05D2260/00—Function
    • F05D2260/20—Heat transfer, e.g. cooling
    • F05D2260/232—Heat transfer, e.g. cooling characterized by the cooling medium
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Landscapes

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

Abstract

An aerodynamic buffer zone in the gap between the tip of an air cooled axial flow turbine blade of a gas turbine engine and its surrounding shroud or seal (outer air seal) is created by discretely discharging a high velocity stream of cooling air from the tip of the blade in a judicious direction.
The stream is angularly oriented relative to the plane of rotation of the turbine so that it is discharged in the gap in the direction of the pressure side of the turbine and preferably at between a 15-45° angle relative to the flat surface of the tip of the blade.
CA002007633A 1988-07-29 1990-01-12 Clearance control for the turbine of a gas turbine engine Expired - Fee Related CA2007633C (en)

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
GB9000456A GB2319567B (en) 1988-07-29 1990-01-09 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
SE9000113D SE9000113L (en) 1988-07-29 1990-01-12 Game control for the turbine at a gas turbine engine
CA002007633A CA2007633C (en) 1988-07-29 1990-01-12 Clearance control for the turbine of a gas turbine engine
SE9000113A SE470600B (en) 1988-07-29 1990-01-12 Axial flow turbine for gas turbine engine
AU48813/90A AU684038B1 (en) 1988-07-29 1990-01-12 Clearance control for the turbine of a gas turbine engine
IT04756490A IT1283979B1 (en) 1988-07-29 1990-01-24 IMPROVEMENT IN AXIAL FLOW TURBINES
DE4003802A DE4003802C2 (en) 1988-08-24 1990-02-08 Minimal leakage flow between the tip of the blade and the opposite housing wall
NL9000541A NL194700C (en) 1988-08-24 1990-03-09 Axial flow turbine for a gas turbine engine.
JP02800007A JP3040158B2 (en) 1988-08-24 1990-03-16 Axial turbine for gas turbine engine

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
US07/226,094 US4921166A (en) 1987-07-31 1988-07-29 Hot water circulating system
GB9000456A GB2319567B (en) 1988-07-29 1990-01-09 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
CA002007633A CA2007633C (en) 1988-07-29 1990-01-12 Clearance control for the turbine of a gas turbine engine
SE9000113A SE470600B (en) 1988-07-29 1990-01-12 Axial flow turbine for gas turbine engine
AU48813/90A AU684038B1 (en) 1988-07-29 1990-01-12 Clearance control for the turbine of a gas turbine engine
IT04756490A IT1283979B1 (en) 1988-07-29 1990-01-24 IMPROVEMENT IN AXIAL FLOW TURBINES
DE4003802A DE4003802C2 (en) 1988-08-24 1990-02-08 Minimal leakage flow between the tip of the blade and the opposite housing wall
NL9000541A NL194700C (en) 1988-08-24 1990-03-09 Axial flow turbine for a gas turbine engine.
JP02800007A JP3040158B2 (en) 1988-08-24 1990-03-16 Axial turbine for gas turbine engine

Publications (2)

Publication Number Publication Date
CA2007633A1 true CA2007633A1 (en) 1997-06-06
CA2007633C CA2007633C (en) 2000-03-14

Family

ID=27578965

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002007633A Expired - Fee Related CA2007633C (en) 1988-07-29 1990-01-12 Clearance control for the turbine of a gas turbine engine

Country Status (4)

Country Link
AU (1) AU684038B1 (en)
CA (1) CA2007633C (en)
IT (1) IT1283979B1 (en)
SE (2) SE9000113L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9039346B2 (en) 2011-10-17 2015-05-26 General Electric Company Rotor support thermal control system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4390320A (en) * 1980-05-01 1983-06-28 General Electric Company Tip cap for a rotor blade and method of replacement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9039346B2 (en) 2011-10-17 2015-05-26 General Electric Company Rotor support thermal control system

Also Published As

Publication number Publication date
SE9000113L (en) 1998-05-03
SE470600B (en) 1998-09-14
CA2007633C (en) 2000-03-14
IT1283979B1 (en) 1998-05-07
IT9047564A1 (en) 1991-07-24
IT9047564A0 (en) 1990-01-24
SE9000113D0 (en) 1990-01-12
AU684038B1 (en) 1997-12-04

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed