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GAS TURBINE

9FA GE MAKE GAS TURBINE

DLN COMBUSTION SYSTEM

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GAS TURBINE

CONFIGURATION

COMPRESSOR: 18 SATGES

: 18 STAGES OF ROTATINGBLADES(R0-R17)

: 18 STAGES OF STATIONARYVANES(S0-S17

AND 2 STAGES OF EIT GUIDEVANES)

COMPRESSOR AND TURBINE ARE

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GAS TURBINE CONFIGURATION

TURBINE: ! STAGES

: ! ROTATING BLADES (BUCKETS)

: ! STATIONARY BLADES

(NO""LES)

: ! S#ROUDS (FOR TIP CLEARANCE

AND T#ERMAL

INSULATION)

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ARRANGEMENT WITH UPPER

CASINGS OPEN

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GAS TURBINE

CONFIGURATION T#E FOLLO$ING COMPONENTS ARE

AIR COOLED FOR #IG# TEMP SERVICE%

BUCKETS:

-1ST AND 2NDSTAGE

NO""LES:

- 1ST& 2NDAND !RDSTAGES

S#ROUDS

- 1STSTAGE

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GAS TURBINE

CONFIGURATION

T#E COMPRESSOR PROVIDES AIR

RE'UIRED -COMBUSTION

-COOLING

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AIR FLO$ DIRECTION

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COMBUSTION AIR

COMPRESSOR DISC#ARGE AIR FLO$S INTO

DISC#ARGE PLENUM%

AIR ENTERS T#ROUG# FLO$ SLEEVE #OLES

AIR TRAVELS T#ROUG# ANNULUS BET$EEN

FLO$ SLEEVE AND LINER

T#EN AIR ENTERS COMBUSTION "ONE

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FIRST

STAGE

NOZZLE

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COOLING AIR CIRCUIT

INTERNAL CIRCUIT

INTERNAL CIRCUIT-1 (SUPPLIED FROM

COMPRESSOR DISC#ARGE PLENUM) PROVIDESCOOLING OF

: 1STSTAGE NO""LE

: 1STSTAGE S#ROUD

AFTER COOLING T#E AIR MIES $IT# #OT GASES

AND TRAVEL ONTO 1STSTAGE BUCKETS%

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COOLING AIR CIRCUIT

INTERNAL CIRCUIT

- INTERNAL CIRCUIT (SUPPLIED FROM

COMPRESSOR 17T#STAGE $#EEL

T#ROUG# DISTANCE PIECE) PROVIDESFOR COOLING OF

- 1STSTAGE BUCKET

- 2NDSTAGE BUCKET- ROTOR COOLING ($#EEL SPACE )

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COOLING AIR CIRCUIT

ETERNAL CIRCUIT

- PIPING FROM 9T#AND 1!T#STAGEBLEED PIPING TO TURBINE CASING FOR

COOLING

: 2NDSTAGE NO""LES

: !RDSTAGE NO""LE

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EXTERNAL

COOLING AIR

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#OLLO$ TURBINE DISTANCE

PIECE FOR CARRYING COOLING

AIR

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TURBINE

WHEELS

WITH SLOTS

FOR

BUCKET

FIXING

COOLING

AIR

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AIR COMES FROMHOLLOW SHAFT

THROUGH WHEEL SLOT

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COOLING

AIR

ENTRY

PATH

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EXTERNAL

COOLING AIR

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CUT A$AY VIE$ : COOLING AIR FLO$