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NovaStar, SS120, Back Pressure Steam Turbine Generator Set, 12,910 kW, 60 Hz (New)

NovaStar, SS120, Back Pressure Steam Turbine Generator Set, 12,910 kW, 60 Hz

Description

  1. Overview
    1. New-build back pressure steam turbine generator set, multi-stage reaction turbine with reduction gearbox and synchronous generator
    2. Electrical output: 12,910 kW (17,313 hp) at design steam conditions, 60 Hz
    3. Sized to use the full available steam flow of 93,900 kg/hr (207,014 lb/hr)
    4. Built to order
  2. Turbine Design Operating Parameters
    1. Steam inlet pressure: 36 ata (512 psia)
    2. Steam inlet condition: superheated
    3. Steam inlet temperature: 400 °C (752 °F)
    4. Steam inlet flow rate: 93,900 kg/hr (207,014 lb/hr)
    5. Steam exhaust pressure: 2.5 ata (35.6 psia)
    6. Steam exhaust temperature: 127.41 °C (261.3 °F)
    7. Steam exhaust flow rate: 93,900 kg/hr (207,014 lb/hr)
    8. Electrical power: 12,910 kW
    9. Specific steam rate: 7.273 kg/kWh (16.03 lb/kWh)
  3. Steam Turbine
    1. Multi-stage, reaction
    2. Operating speed: approximately 9,800 rpm
    3. Gland seal: labyrinth
    4. Blades: X22 Cr.Mo.V.12-1
    5. Nozzles: X22 Cr.Mo.V.12-1
    6. Rotor shaft: 30 Cr.Mo.Ni.V.5-11
    7. Diaphragm: X22 Cr.Mo.V.12-1
    8. Casing: G17 Cr.Mo.5-5
    9. Steam chest and emergency stop valve: G17 Cr.Mo.5-5
    10. Bearing housing: G18 Mo.5
    11. Pedestal: structural steel, grade E275 BR
    12. Labyrinth seals: 'J' wire labyrinth
    13. Mild steel base frame, common for turbine and gearbox
    14. Tilting pad journal and thrust bearings, white metal on steel (Michell)
    15. Design standards: IEC 60045, ASME, ASTM
  4. Synchronous Generator
    1. High voltage, 12,910 kW
    2. AC, three phase, 4-pole, 60 Hz
    3. Voltage to be specified by the buyer
    4. IP54 protection
    5. Class F insulation, temperature rise limited to Class B
    6. Closed air circuit, water cooled (CACW)
    7. Maximum working ambient temperature: 45 °C (113 °F)
  5. Gearbox
    1. Rated power: 12,910 kWe
    2. Helical, single stage reduction gearbox with barring gear
    3. Minimum service factor of 1.3 (rated for short circuit torque in 2 phase and 3 phase)
    4. Design standard: AGMA 6011
  6. Actuator
    1. Voith (Germany), electro-hydraulic
    2. Single acting hydraulic cylinder, extendable by spring
    3. Way valve with cartridge valve (if necessary)
    4. Stroke electrically adjustable by analog signal with potentiometer
    5. Servomotor clevis mounted, vertical orientation (rod upwards)
  7. Emergency Stop Valve
    1. Spring loaded, hydraulic
    2. Redundant trip solenoids (SIL2 safety rating each, resulting in SIL3)
  8. Couplings
    1. Non-lubricated, steel laminated, flexible couplings between turbine and gearbox and between gearbox and generator, with coupling guards
  9. Lubrication System
    1. Force-feed lubrication system
    2. Lube oil tank with cleaning doors and breather
    3. Main oil pump driven by the gearbox low speed shaft (Rickmeier, Germany, or equivalent)
    4. 415 V AC three phase motor driven auxiliary oil pump with automatic cut-in and cut-out
    5. 110 V DC motor driven emergency oil pump
    6. Suction strainers for the main, auxiliary and emergency oil pumps
    7. Pressure regulating valves
    8. Twin oil coolers with RTDs for temperature measurement
    9. Twin oil filters, 16 micron
    10. Associated piping, pressure gauges and other valves
  10. Gland Steam Condenser
    1. Shell and tube type with exhaust fan
  11. Control Panels and Instrumentation
    1. PLC turbine control panel (Siemens, Rockwell or equivalent)
    2. Generator control panel (relays, metering and synchronizing panel)
    3. Neutral grounding resistor (NGR) panel
    4. Lightning arrester, surge capacitor and voltage transformer (LA/SC/VT) panel
    5. AVR / excitation panel (ABB Unitrol)
    6. Turbine generator motor control center with AC distribution board
    7. DC motor starter panel
    8. Vibration monitoring system: housing sensors on the low speed train, shaft sensors on the high speed train
    9. Dedicated overspeed protection system (Heinzmann / Woodward, 2 out of 3)
  12. Accessories
    1. Foundation bolts and leveling blocks / wedges
  13. Performance Notes
    1. Performance data applies at steady state conditions, with the control valve fully open and deposit free blading
    2. Electrical power is guaranteed when the turbine is operated at design parameters only
    3. Performance data does not include the power and steam requirements of auxiliary equipment
    4. Tolerance of plus or minus 3% applies to the power output
  14. Utilities Required at Site (Indicative)
    1. Clean, dry instrument air: 5 SCFM at 7 kg/cm2 g (100 psig)
    2. Cooling water: 5,000 L/min (1,321 US gpm) at 28 °C (82 °F) and 2.5 kg/cm2 g (36 psig)
    3. Continuous three phase, low voltage, 50 Hz AC auxiliary power supply
    4. Continuous 110 V DC power supply
  15. Not Included
    1. Steam, cooling water and other interconnecting piping, valves and piping accessories
    2. Foundations, turbine building and civil works; platforms and ladders; grouting
    3. Power, control and instrumentation cables; earthing
    4. Crane for handling the turbine generator set; flushing oil and first oil fill
    5. Unloading at site, statutory approvals and fire safety system
    6. Instrument air supply; utility, auxiliary and emergency power
    7. Target plate / blanking device for steam blowing
    8. Technicians' man-day charges for supervision of erection and commissioning
    9. Any item not specifically listed in the scope of supply