Gas Generators Presented by MEA/A Coles 31 Oct 05.
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Transcript of Gas Generators Presented by MEA/A Coles 31 Oct 05.
![Page 1: Gas Generators Presented by MEA/A Coles 31 Oct 05.](https://reader036.fdocuments.in/reader036/viewer/2022062714/56649d205503460f949f44b5/html5/thumbnails/1.jpg)
Gas GeneratorsGas GeneratorsPresented by MEA/A ColesPresented by MEA/A Coles
31 Oct 0531 Oct 05
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ObjectivesObjectives
• Explain what a Gas Turbine is.Explain what a Gas Turbine is.• Describe the Air Intake System.Describe the Air Intake System.• Portray the purpose of basic Watch Portray the purpose of basic Watch
Keeping.Keeping.• Talk through Dry & Wet motoring, Talk through Dry & Wet motoring,
Cleaning and Inhibiting.Cleaning and Inhibiting.• Explain Trips and Breakdowns. Explain Trips and Breakdowns. • Operation of BCF.Operation of BCF.
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AimAim
To improve personnel's basic To improve personnel's basic knowledge knowledge
on propulsions part of ship.on propulsions part of ship.
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What are Gas What are Gas Generators?Generators?
• Energy to propulsion COGOG.Energy to propulsion COGOG.• Gas is more efficient than steam and Gas is more efficient than steam and
less costly than Nuclear.less costly than Nuclear.• 3 Engines – 3 Engines – Olympus TM3BOlympus TM3B
Tyne RM1CTyne RM1C
Spey SM1a/1cSpey SM1a/1c
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AIR INTAKE:AIR INTAKE:11stst, 2, 2ndnd, 3, 3rdrd Stage Filters Stage Filters
• 11stst & 3 & 3rdrd -- Tortuous PathsTortuous Paths• 22ndnd Knitmesh Knitmesh -- Filters DirtFilters Dirt
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Plenum Chamber & Plenum Chamber & Splinter / SilencerSplinter / Silencer
• Plenum Chamber Plenum Chamber -- Room AccessRoom Access• Ceiling AccessCeiling Access -- Engine RemovalEngine Removal• Blow down DoorsBlow down Doors -- Emergency Air Emergency Air
IntakeIntake• Splinter / SilencerSplinter / Silencer -- Aerofoil Smoothes Aerofoil Smoothes
AirAir
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Stone Guard, Transition Stone Guard, Transition Duct, Cascade BendsDuct, Cascade Bends
• Stone Guard Stone Guard - - Prevents FOD Prevents FOD ingress ingress to Engines.to Engines.
• Transition DuctTransition Duct - - Smoothes Smoothes smoothed smoothed air for air for Aerodynamic Aerodynamic entrance.entrance.
• Cascade BendsCascade Bends -- Changes Changes air in a 90 air in a 90 degree direction.degree direction.
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Intake Flare, Nozzle Intake Flare, Nozzle BulletBullet
• Intake FlareIntake Flare Guides Air.Guides Air.
High Velocity.High Velocity.
Compressor Compressor CleaningCleaning
• Nozzle BulletNozzle Bullet
Leads air to Leads air to
LP Compressor LP Compressor VeinsVeins
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LP CompressorLP Compressor• LP CompressorLP Compressor -- Draws in AirDraws in Air
Rotor & Stator BladesRotor & Stator Blades• Blow off VVBlow off VV -- Tyne’s OnlyTyne’s Only
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HP CompressorHP Compressor• HP CompressorHP Compressor --
Compress’s air Compress’s air
nine timesnine times
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Combustion Chambers, Combustion Chambers, Igniters, BurnersIgniters, Burners
• Combustion takes place Combustion takes place inside cans.inside cans.
10 Tyne, 8 10 Tyne, 8 OlympusOlympus
• Burner manifold circles the Burner manifold circles the chambers.chambers.
• 2x Igniters set alight 2x Igniters set alight
HP Fuel & HP AirHP Fuel & HP Air
3&8 Tyne, 2&6 Olympus3&8 Tyne, 2&6 Olympus• Produces Exhaust GasProduces Exhaust Gas
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HP TurbineHP Turbine
• HP TurbineHP Turbine -- Helps drive the Helps drive the memento of the memento of the
HP HP Compressor Compressor
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LP TurbineLP Turbine
• LP TurbineLP Turbine -- Helps drive the Helps drive the memento of memento of
the LP the LP Compressor Compressor
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PT TurbinePT Turbine
• LP TurbineLP Turbine -- Helps drive the Helps drive the memento of memento of
the LP the LP Compressor Compressor
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Exhaust Gas, Exhaust Gas, Vent Intake and Exhaust Vent Intake and Exhaust
FlumeFlume• Exhaust GasExhaust Gas - - Leaves via Leaves via
FunnelFunnel• Intake by FlumeIntake by Flume - - Provides Provides
fresh air fresh air intake to cool intake to cool
module module• Exhaust by Flume -Exhaust by Flume - Ventura Ventura
effect by effect by exhaust gas’sexhaust gas’s
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Basic Watch KeepingBasic Watch Keeping
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Basic Watch KeepingBasic Watch Keeping
• Maintaining high standards.Maintaining high standards.• If unsure always ask.If unsure always ask.• Check – Check – Vibration, Leaks, Line Vibration, Leaks, Line
upup
Gauges, Acoustic Gauges, Acoustic TemperaturesTemperatures
Depression, ExhaustDepression, Exhaust
BCF, Vents, TripsBCF, Vents, Trips
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Starting ProcedureStarting Procedure
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Dry MotoringDry MotoringWhen?When?
• Failed StartFailed Start• Purge FuelPurge Fuel• Compressor WashingCompressor Washing• Air Start VV OperationAir Start VV Operation• Lubricate Fuel PumpLubricate Fuel Pump• 150hours Tyne, 100hours Olympus150hours Tyne, 100hours Olympus• Or every 2 monthlyOr every 2 monthly