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ABB, VAX HT16, HP Steam Turbine, 12730 kW, 10059 RPM

ABB, VAX HT16, HP Steam Turbine, 12730 kW, 10059 RPM

Description

  1. Overview
    1. Steam turbine control is implemented in ABB analog control system.
    2. The turbine auxiliaries are implemented in main DCS and the data exchange between the two systems is hardwired.
  2. HP Turbine
    1. The HP steam turbine is a horizontal shaft, single admission, single extraction, multi-stage, straight impulse type, non-condensing turbine with 11 stages and is coupled to generator through a reduction gear.
    2. Manufacturer: ABB
    3. Model: VAX HT16
    4. Rated economical output, turbine coupling: 12730 kW
    5. Rated maximum output, turbine coupling: 14430 kW
    6. Rated speed: 10059 rpm
    7. Overspeed trip setting: 11065 rpm
    8. Normal inlet steam pressure: 6300 kPa
    9. Normal inlet temperature: 482 deg. C
    10. Exhaust pressure, economical load: 800 kPa (a)
    11. Axial displacement trip setting: 0.45 mm
    12. Gross output: 31.3 MW
    13. HP steam pressure: 7620 kPa (max)
    14. IP steam pressure: 915 kPa (max)
    15. LP steam pressure: 230 kPa (max)
  3. LP Turbine
    1. The LP steam turbine is a horizontal shaft, single admission, single extraction/induction, multi-stage, condensing turbine with 9 stages and is coupled to generator through a flexible coupling.
    2. Model: VAX LT25
    3. Rated economical output, turbine coupling: 18300 kW
    4. Rated maximum output, turbine coupling: 20100 kW
    5. Rated speed: 3600 rpm
    6. Overspeed trip setting: 3960 rpm
    7. Normal inlet steam pressure, economical load: 800 kPa
    8. Normal inlet temperature, economical load: 222 deg. C
    9. Exhaust pressure, economical load: 6.9 kPa (a)
    10. Axial displacement trip setting: 0.65 mm
  4. Reduction Gear
    1. Manufacturer: Flender-Graffenstaden
    2. Type: (no. TX 45/2) (no. 4064)
    3. Input speed: 10059 rpm
    4. Output speed: 3600 rpm
    5. Reduction ratio: 2.8:1
  5. Main Turbine Turning Gear
    1. Manufacturer: Flender-Graffenstaden
    2. Model: CA 122K
    3. Gear ratio: 20.23:1
    4. Speed: 84 rpm
  6. Main Turbine Turning Gear Motor
    1. Type: LS 254T
    2. Voltage: 575 VAC, 60 Hz, 3 ph
    3. Motor rating: 11 kW
    4. Speed: 1800 rpm
  7. Main Turbine Turning Gear Clutch
    1. Model: 36 T RH
  8. Miscellaneous Equipment
    1. Gland seal unit
    2. Gland seal condenser
    3. Gland seal condenser fan
    4. Lube oil tank
    5. Lube oil coolers
    6. Lube oil filters
    7. Main oil pump
    8. Main oil motor
    9. Emergency oil pump
    10. Emergency oil pump motor
    11. Lube oil tank heater
    12. Jacking oil pump
    13. Jacking oil pump motor
    14. Oil vapour fan
    15. Oil vapour fan motor
    16. Hydraulic supply system unit skid
    17. Turbine drain return system
    18. Turbine generator
    19. Turbine generator exciter
    20. Vibration monitoring system
    21. DCS system
  9. HRSGs – BO-101 & BO-102
    1. High pressure boiler
    2. Manufacturer: Foster Wheeler Ltd
    3. High pressure boiler design pressure: 1105 psig
    4. High pressure boiler heating surface: 116161 sq. ft.
    5. HP boiler super-heater: 1105 psig
    6. HP boiler super-heater heating surface: 31280
    7. Economizer: Rahm Fab
    8. Steam capacity: 163177 lbs/hr
    9. C.R.N: K4015.5
    10. O.I.N: 5.937852
    11. Year built: 1992
    12. Intermediate pressure boiler
    13. IP boiler design pressure: 150 psig
    14. IP boiler heating surface: 61952 sq. ft.
    15. Steam capacity: 27468 lbs/hr
    16. C.R.N: K4015.5 add
    17. Low pressure boiler
    18. LP boiler design pressure: 150 psig
    19. LP boiler heating surface: 53102 sq. ft.
    20. Steam capacity: 10864 lbs/hr
    21. Duct from gas turbine outlet to steam generator inlet
    22. Steel casing (enclosure for pressure parts) c/w expansion joints
    23. Flue from low pressure economizer to the exhaust stack
    24. Exhaust stack 91'10" (28m)
    25. Supporting steel
    26. Platforms and walkways
    27. Duct burner system
    28. Instruments/safety valves/gauge glasses