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Accessory Drive/Gearbox Assembly
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n 4 n 1 T1 T1 Gears Law T4 If T = No. of Gear Teeth n = RPM of Gear
Find T4 n 4 = 2000 rpm T4 n 1 = 400 rpm T3 T2 T1 T1 = 100 teeth Gears Law
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n 1 n 4 = n 1 n 4 n1 = n4 = T4 T3 n3 n4 T3 T2 n2 n3 T2 T1 n1 n2 T4 T3
X T3 T2 T2 T1 X n3 n4 n2 n3 X n1 n2 X = = n 1 n 4 T4 T1 n 1 = rpm n 4 = rpm T4 = n1 T1 X n4 T1 = teeth T4 = 400 2000 100 X 20 Teeth
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Main Lube oil AC. Lube oil DC. Lube oil
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LUBE OIL SYSTEM Lube Oil Drain Header To Main Lube Oil Reservoir
To Lube Oil Reservoir LUBE OIL SYSTEM Rundown Tank 7000 mm Above Machine C/L Lube Supply Oil Header Starter Motor COMPRESSOR Starter motor will be disconnected at about 65% of the max. operating speed Gas Turbine HS.C Gear Box Lube Oil Drain Header To Main Lube Oil Reservoir 6
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Cooling Air to the Turbine Blades
Air to cool the Turbine Blades Turbine Shaft Compressor Air
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Combustion chamber Atomizing air Primary air Secondary air Sealing air
Fuel Atomizing air Primary air Secondary air Sealing air Cooling air Bleeding air
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Atomizing air Combustion chamber Fuel
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Atomizing air Combustion chamber Fuel
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Types of Combustion Chambers
Three types of combustion chambers are used in gas turbines: - Single combustion chamber - Annular combustor - Can annular combustor (several combustion chambers) Single combustion chamber
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2-Annular Combustor The annular combustor's combustion chamber
completely surrounds the shaft. Fuel nozzles are inserted into the annular chamber at various points around the chamber’s perimeter
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Annular combustion chamber (annular combustor)
Side view Axial view Annular combustion chamber (annular combustor)
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3-Multi - Can-Annular Combustor
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