CA2261184A1 - Cooled stationary blade of a gas turbine - Google Patents

Cooled stationary blade of a gas turbine

Info

Publication number
CA2261184A1
CA2261184A1 CA002261184A CA2261184A CA2261184A1 CA 2261184 A1 CA2261184 A1 CA 2261184A1 CA 002261184 A CA002261184 A CA 002261184A CA 2261184 A CA2261184 A CA 2261184A CA 2261184 A1 CA2261184 A1 CA 2261184A1
Authority
CA
Canada
Prior art keywords
steam
stationary blade
cooling means
cooling
passage
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
CA002261184A
Other languages
French (fr)
Other versions
CA2261184C (en
Inventor
Yasuoki Tomita
Sunao Aoki
Kiyoshi Suenaga
Tatsuo Ishiguro
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.)
Mitsubishi Power Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2261184A1 publication Critical patent/CA2261184A1/en
Application granted granted Critical
Publication of CA2261184C publication Critical patent/CA2261184C/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
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • 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
    • F05D2240/10—Stators
    • 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
    • F05D2260/221—Improvement of heat transfer
    • F05D2260/2214—Improvement of heat transfer by increasing the heat transfer surface
    • F05D2260/22141—Improvement of heat transfer by increasing the heat transfer surface using fins or ribs

Landscapes

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

Abstract

Disclosed is a cooled stationary blade assembly for a gas turbine, the assembly comprising an outer shroud, an inner shroud, a stationary blade, having a front edge and a rear edge, provided between the outer shroud and the inner shroud, first steam cooling means provided in an interior of the stationary blade which receives cooling steam in a first passage adjacent to the front edge of the stationary blade and discharges cooling steam only from a last passage adjacent to the rear edge of the stationary blade, and second steam cooling means provided in the vicinity of an end portion of the inner shroud. The first steam cooling means and the second steam cooling means communicate with each other at the first passage and at the last passage of the stationary blade, with the first steam cooling means providing a portion of the cooling steam to the second steam cooling means at the first passage of the stationary blade, and the second steam cooling means returning the cooling steam to the first steam cooling means at the last passage of the stationary blade to recover the cooling steam.
CA002261184A 1997-05-01 1998-04-28 Cooled stationary blade of a gas turbine Expired - Lifetime CA2261184C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP9-113845 1997-05-01
JP11384597A JP3276305B2 (en) 1997-05-01 1997-05-01 Gas turbine cooling vanes
PCT/JP1998/001958 WO1998050684A1 (en) 1997-05-01 1998-04-28 Gas turbine cooling stationary blade

Publications (2)

Publication Number Publication Date
CA2261184A1 true CA2261184A1 (en) 1998-11-12
CA2261184C CA2261184C (en) 2002-07-09

Family

ID=14622507

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002261184A Expired - Lifetime CA2261184C (en) 1997-05-01 1998-04-28 Cooled stationary blade of a gas turbine

Country Status (5)

Country Link
EP (1) EP0911488B1 (en)
JP (1) JP3276305B2 (en)
CA (1) CA2261184C (en)
DE (1) DE69821312T2 (en)
WO (1) WO1998050684A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4508482B2 (en) * 2001-07-11 2010-07-21 三菱重工業株式会社 Gas turbine stationary blade
EP1571296A1 (en) * 2004-03-01 2005-09-07 Alstom Technology Ltd Cooled blade of a turbomachine and method of cooling
US7147439B2 (en) * 2004-09-15 2006-12-12 General Electric Company Apparatus and methods for cooling turbine bucket platforms
US7309212B2 (en) * 2005-11-21 2007-12-18 General Electric Company Gas turbine bucket with cooled platform leading edge and method of cooling platform leading edge
JP4931157B2 (en) 2006-02-14 2012-05-16 株式会社Ｉｈｉ Cooling structure
JP4979983B2 (en) * 2006-05-29 2012-07-18 三井造船株式会社 Dust adhesion prevention device for furnace top pressure recovery turbine blade
JP4801618B2 (en) * 2007-03-30 2011-10-26 三菱重工業株式会社 Gas turbine stationary blade and gas turbine provided with the same
US8814517B2 (en) * 2010-09-30 2014-08-26 General Electric Company Apparatus and methods for cooling platform regions of turbine rotor blades
US8777568B2 (en) * 2010-09-30 2014-07-15 General Electric Company Apparatus and methods for cooling platform regions of turbine rotor blades
US8840369B2 (en) * 2010-09-30 2014-09-23 General Electric Company Apparatus and methods for cooling platform regions of turbine rotor blades
US8684664B2 (en) * 2010-09-30 2014-04-01 General Electric Company Apparatus and methods for cooling platform regions of turbine rotor blades
US8858160B2 (en) * 2011-11-04 2014-10-14 General Electric Company Bucket assembly for turbine system
US8905714B2 (en) * 2011-12-30 2014-12-09 General Electric Company Turbine rotor blade platform cooling

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04311604A (en) * 1991-04-11 1992-11-04 Toshiba Corp Turbine stationary blade
JP3015531B2 (en) * 1991-09-06 2000-03-06 株式会社東芝 gas turbine
JP2953842B2 (en) * 1991-12-16 1999-09-27 東北電力株式会社 Turbine vane
JPH0693801A (en) * 1992-09-17 1994-04-05 Hitachi Ltd Gas turbine
US5320483A (en) * 1992-12-30 1994-06-14 General Electric Company Steam and air cooling for stator stage of a turbine
JP3188105B2 (en) * 1994-07-11 2001-07-16 三菱重工業株式会社 Gas turbine blades
US5634766A (en) * 1994-08-23 1997-06-03 General Electric Co. Turbine stator vane segments having combined air and steam cooling circuits

Also Published As

Publication number Publication date
JPH10306706A (en) 1998-11-17
JP3276305B2 (en) 2002-04-22
DE69821312T2 (en) 2005-08-04
EP0911488B1 (en) 2004-01-28
CA2261184C (en) 2002-07-09
DE69821312D1 (en) 2004-03-04
EP0911488A4 (en) 2000-11-29
WO1998050684A1 (en) 1998-11-12
EP0911488A1 (en) 1999-04-28

Similar Documents

Publication Publication Date Title
CA2392577A1 (en) Gas turbine stationary blade
CA2261184A1 (en) Cooled stationary blade of a gas turbine
SG74709A1 (en) Shroud cooling assembly for gas turbine engine
CA1221915A (en) Multi-chamber airfoil cooling insert for turbine vane
US7059834B2 (en) Turbine blade
CA2214826A1 (en) Gas turbine stationary blade
EP0971095A3 (en) A coolable airfoil for a gas turbine engine
CA2263642A1 (en) Seal structure for gas turbines
EP0924382A3 (en) Leading edge cooling for a gas turbine blade
WO2001059263A3 (en) Turbine blade arrangement
EP1024251A3 (en) Cooled turbine shroud
EP0911489A4 (en) Gas turbine cooling stationary blade
CA2209850A1 (en) Heat recovery type gas turbine rotor
EP1205634A3 (en) Cooling of a gas turbine blade
GB2320526B (en) Ducted fan gas turbine engine
EP1318353A3 (en) Gas turbine combustor
CA2263508A1 (en) Sealing device for gas turbine stator blades
EP0894946A4 (en) Gas turbine cooling stationary vane
GB2326679B (en) Ducted fan gas turbine engine
GB2322914B (en) Ducted fan gas turbine engine
EP0786580A3 (en) Multi-component blade for a gas turbine
EP1548231A3 (en) Fairing for a turbine frame strut
EP1176285A3 (en) Shroud cooling segment and assembly
EP1088966A3 (en) Turbine nozzle stage having thermocouple guide tube
CA2289997A1 (en) Die cast housing for welding machine generator

Legal Events

Date Code Title Description
EEER Examination request