Page 351 - Subyek Teknik Mesin - Forsthoffers Best Practice Handbook for Rotating Machinery by William E Forsthoffer

Be st Practice 6 .1 Gas Turbine Best Practices

Fig 6.1.19 The number of gas turbine shafts (Courtesy of Solar Turbines, Inc.)

Hot end drive (exhaust end) Cold end drive (inlet end)
Majority of 1st, 2nd Some 2nd generation
generation Most 3rd generation
Disadvantages Advantages
Longer drive coupling spacer Shorter drive coupling
Driver coupling in hot spacer
environment Minimized thermal expansion effects

Fig 6.1.20 Gas turbine drive configurations

Industrial single shaft Industrial dual shaft
Generator drive Land based mechanical drive
*
Limited mechanical Pipeline
drive applications Refinery, gas plant, petrochemical
(Compressor – pump) plant land based
Generator drive
* Usually used only when a multi-shaft alternative in the designed
power range is not available
Aero multi-shaft (dual or triple)
Co-generation
Off-shore
Generator drive
Compressor drive
Pipeline
Pump drive
Compressor drive

Fig 6.1.21 Gas turbine cycles Fig 6.1.22 Gas turbine applications

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