EP1335111A3 - Coolant recovery type gas turbine - Google Patents

Coolant recovery type gas turbine Download PDF

Info

Publication number
EP1335111A3
EP1335111A3 EP03004315A EP03004315A EP1335111A3 EP 1335111 A3 EP1335111 A3 EP 1335111A3 EP 03004315 A EP03004315 A EP 03004315A EP 03004315 A EP03004315 A EP 03004315A EP 1335111 A3 EP1335111 A3 EP 1335111A3
Authority
EP
European Patent Office
Prior art keywords
discs
coolant
spacers
moving blades
gas turbine
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
EP03004315A
Other languages
German (de)
French (fr)
Other versions
EP1335111B1 (en
EP1335111A2 (en
Inventor
Shinya Marushima
Manabu Matsumoto
Kazuhiko Kawaike
Takashi Ikeguchi
Takashi Machida
Masaru Sanhiruta Omika Room 303 Sekihara
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to DE69634618T priority Critical patent/DE69634618T2/en
Priority to EP03004315A priority patent/EP1335111B1/en
Priority claimed from EP96940152A external-priority patent/EP0965726B1/en
Publication of EP1335111A2 publication Critical patent/EP1335111A2/en
Publication of EP1335111A3 publication Critical patent/EP1335111A3/en
Application granted granted Critical
Publication of EP1335111B1 publication Critical patent/EP1335111B1/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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/02—Blade-carrying members, e.g. rotors
    • F01D5/08—Heating, heat-insulating or cooling means
    • F01D5/081—Cooling fluid being directed on the side of the rotor disc or at the roots of the blades
    • F01D5/084—Cooling fluid being directed on the side of the rotor disc or at the roots of the blades the fluid circulating at the periphery of a multistage rotor, e.g. of drum type
    • 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
    • F05D2260/205—Cooling fluid recirculation, i.e. after cooling one or more components is the cooling fluid recovered and used elsewhere for other purposes

Landscapes

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

Abstract

A gas turbine includes a rotor shaft comprising a plurality of discs (8, 9, 10, 11, 12a). Each disc (8, 9, 10, 11, 12a) has a plurality of moving blades (4, 5, 6, 7, 7a) driven by combustion gas and arranged annularly on the peripheral portion. Spacers (11a, 13, 14, 15) are arranged between the discs (8, 9, 10, 11, 12a), the respective discs (8, 9, 10, 11, 12a) and the spacers (11a, 13, 14, 15) being arranged in the axial direction. The moving blades (4, 5, 6, 7, 7a) are provided with flow paths (8a, 9a) for introducing coolant for cooling and discharging the coolant heated by the combustion gas. Contact surfaces (16a, 31, 32, 33, 34, 35, 36) contacting both the discs (8, 9, 10, 11, 12a) in rotor peripheral side regions and adjacent spacers (11a, 13, 14, 15) are formed therebetween. A supply flow path (8a) passes through the discs (8, 9, 10, 11, 12a) and the spacers (11a, 13, 14, 15) in the regions forming the contact surfaces (16a, 31, 32, 33, 34, 35, 36) and supply the coolant for cooling the moving blades (4, 5, 6, 7, 7a). A recovery flow path (9a) recovers the coolant which is heated by the moving blades (4, 5, 6, 7, 7a).
EP03004315A 1996-11-29 1996-11-29 Coolant recovery type gas turbine Expired - Lifetime EP1335111B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE69634618T DE69634618T2 (en) 1996-11-29 1996-11-29 Gas turbine with coolant recovery system
EP03004315A EP1335111B1 (en) 1996-11-29 1996-11-29 Coolant recovery type gas turbine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP96940152A EP0965726B1 (en) 1996-11-29 1996-11-29 Refrigerant recovery type gas turbine
EP03004315A EP1335111B1 (en) 1996-11-29 1996-11-29 Coolant recovery type gas turbine

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP96940152A Division EP0965726B1 (en) 1996-11-29 1996-11-29 Refrigerant recovery type gas turbine

Publications (3)

Publication Number Publication Date
EP1335111A2 EP1335111A2 (en) 2003-08-13
EP1335111A3 true EP1335111A3 (en) 2003-11-05
EP1335111B1 EP1335111B1 (en) 2005-04-13

Family

ID=27589222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03004315A Expired - Lifetime EP1335111B1 (en) 1996-11-29 1996-11-29 Coolant recovery type gas turbine

Country Status (1)

Country Link
EP (1) EP1335111B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5558496A (en) * 1995-08-21 1996-09-24 General Electric Company Removing particles from gas turbine coolant
EP0735238A1 (en) * 1995-03-31 1996-10-02 General Electric Company Closed or open circuit cooling of turbine rotor components
JPH09195702A (en) * 1996-01-18 1997-07-29 Hitachi Ltd Gas turbine, cooling device for gas turbine moving blade, and cooling method for gas turbine moving blade
JPH09242563A (en) * 1996-03-11 1997-09-16 Hitachi Ltd Gas turbine cooling system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0735238A1 (en) * 1995-03-31 1996-10-02 General Electric Company Closed or open circuit cooling of turbine rotor components
US5558496A (en) * 1995-08-21 1996-09-24 General Electric Company Removing particles from gas turbine coolant
JPH09195702A (en) * 1996-01-18 1997-07-29 Hitachi Ltd Gas turbine, cooling device for gas turbine moving blade, and cooling method for gas turbine moving blade
JPH09242563A (en) * 1996-03-11 1997-09-16 Hitachi Ltd Gas turbine cooling system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 11 28 November 1997 (1997-11-28) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 01 30 January 1998 (1998-01-30) *

Also Published As

Publication number Publication date
EP1335111B1 (en) 2005-04-13
EP1335111A2 (en) 2003-08-13

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