Tuesday, December 27, 2016

Steam turbine

Twin cross-compounded steam turbines are used in the machinery layout of the container ship, shown in Figure 1.4. Only part plans and sections are given since there is a considerable degree of symmetry in the layout. Each turbine set drives, through a double reduction gearbox with separate thrust block, its own fixed-pitch propeller. The condensers are located beneath each low-pressure turbine and are arranged for scoop circulation at full power operation and axial pump circulation when manoeuvring.





Steam turbine 1 Main boiler
2 FD fan 3 Main feed pump 4 Turbo-alternator 7 SW-cooled evaporator 10 Hot water calorifier 11 FW pressure tank 12 Main turbines 13 Main gearbox 14 Thrust block 15 Main SW circ pump
machinery arrangement
16 Main condenser 17 Main extraction pump 18 Bilge/ballast pump 19 Drains tank extraction pumps 21 Turbo alternator pump 22 LO cooler 24 LO bypass filter and pumps 26 LO pumps 28 Fire pump
29 Auxiliary boiler 30 Auxiliary boiler feed heater 31 HFO transfer pump module 32 HFO service pumps 33 Diesel oil transfer pump 34 Diesel alternator 35 Diesel alternator controls 40 Condensate de-oiler 41 Refrigerant circulation pump 42 Oily bilge pump 43 Steam/air heater
 

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