3-Multi - Can Annular Combustor 3-Multi - Can-Annular Combustor The third design and the one preferred by most manufacturers, is the can-annular combustor,

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Presentation transcript:

3-Multi - Can Annular Combustor

3-Multi - Can-Annular Combustor The third design and the one preferred by most manufacturers, is the can-annular combustor, a combination of the single combustion chamber and the annular.

TURBINE SECTION (EXPANTION SECTION) This transition duct, located between the combustion chambers and the turbine-nozzle guide vanes, insures a final mixing of the hot gases.

Fixed Nozzles 1 st Stage Turbine Wheel 1 st Stage Turbine 2 nd Stage

Primary air Secondary air Sealing air Cooling air Bleeding air Compressor extracting air Separate HP air compressor Compressor outlet air Compressor air to exhaust Atomizing air

Diffuser Chamber

Gap = 1mm to 1.5 mm

17 IN CASE OF GAS TURBINE AIR COMPRESSOR SURGE BLEED VALVE WILL OPEN IN CASE OF GAS TURBINE AIR COMPRESSOR SURGE BLEED VALVE WILL OPEN COMPRESSOR TURBINE BLEED VALVE

Axial Compressors

Speed Controllin g System

Fly weight Governor Turbine Shaft Turbine Shaft Starts to rotate Rotating Element PIN Governor Valve Rod

Turbine Shaft Fly weight Governor Governor Valve Rod Turbine Shaft Speed Increased

Turbine Shaft Fly weight Governor Governor Valve Rod Turbine Shaft Speed Increased

Turbine Shaft Fly weight Governor Governor Valve Rod Turbine Shaft Speed Increased

Turbine Shaft Fly weight Governor Governor Valve Rod Turbine Shaft Speed Increased

To Decrease Speed Governor valve Fuel to combustion chamber Decreased Oil pressure Governor Valve Rod

Fuel to combustion chamber Increased Governor valve To increase Speed Oil pressure Governor Valve Rod

High speed Trip Valve

Turbine shaft Hydraulic oilFuel gas Or Steam Turbine OPERATING SPEED

Turbine shaft Turbine OVER SPEED Hydraulic oil out Fuel gas Or Steam Stop

Turbine Shaft OPERATING SPEED

Turbine Shaft SPEED INCREASED

Turbine Shaft SPEED MORE INCREASED

Turbine Shaft OVER SPEED