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GTG_1327No.1GR_Fm6CoGen50Hz.doc
Unit No. 1 (CT) / 4 (ST-G) - 1 x Used 51.5Mw Combined Cycle Plant Compiling of:
1 x NTEM PG6531B Gas Turbines on 1 x 15,000KW NTEM ST-G
Asking Price: US $4.855 MM (Fee Inclusive)
BOP Included
Spares for combined cycle.
Shenzhen City, No. A Combined Cycle Fm 6B Power Plant
The power plant was founded in February of 1991 confirmed by the Ministry of Trade and Economy and the government of Shenzhen City. It is one of main gas turbine power plants of Shenzhen and it takes on chief power supply task for Shenzhen City. No.A power plant has two sets of 6B gas turbine and the supporting gas-steam combined cycle unit composed of waste heat boiler and turbo-generator.
No. 1 gas turbine is PG6531B manufactured by Nanjing Turbine & Electric Machinery (Group) Co., Ltd., it was single cycled and commercially run in August of 1992.
The turbine type of No. 1 gas turbine is single shaft and axial flow with 3 grades. The cylinder is horizontal mid-separate surface and it is cooled by the air. The compressor is IGV continuously adjusted and axial flow type and its pressure ratio is 11:7. The inlet is air filter device. The combustor of the gas turbine is adverse current can type and there are 10 combustors. The gas turbine is ignited through exited high pressure electrode type spark plug and there are 2 igniters. The flame detector is ultraviolet photoconductive and there are 4 flame detectors.
No. 1 gas turbine is started through diesel engine and the starting diesel engine is DETROIT 12 V71 T with 630 horsepower and the maximum rotational speed is 2300 rpm. It is burned by light diesel oil and the diesel engine is started through direct current motor. The gas turbine is started through the diesel engine very conveniently in black start areas.
The main equipments of No. 1 gas turbine are assistant gearbox, hydraulic ratcheting pump, load gearbox, main lubricating oil pump, AC assistant lubricating oil pump, DC emergency lubricating oil pump, lubricating oil cooler, fuel oil filtration and lubricating oil filtration, etc.
The control system for the gas turbine is controlled by MARK 4 with unit over-speed protection, bearing vibration alarm and protection, overheating alarm and protection, it has reliable and stable performance.
Main Performance and Parameter of No. 2 Gas Turbines:
No. / No. 2 Gas TurbineModel / PG6531B
Manufacturer / Nanjing Turbine& Electric Machinery (Group) Co., Ltd.
Ex-factory Serial Number / GT6002
Rating / 36.5Mw
Total Running Hours / 39,000
Circulation Type / Simple circulation
Main Shaft Direction / Counterclockwise
Rotational Speed of Shaft / 5100rpm
Fuel / Light diesel oil
Control Mode / MK-IV
Basic Protection / Over-speed, overheating, vibration
Starting Mode / Started by diesel oil
Equipment of Cooling Machine / Hydraulic jigger device
Running Mode / Continuous running
Amortization / Inlet and outlet silencer
Running Mode of Cooling
Water / Opened circulation
No. 2 Gas Turbine Nameplate Data (Standard Status and Basic Load)
No. / No. 2 Gas TurbineBasic Output / 36500 KW
Inlet Temperature / 15 (590F)
Turbine Inlet Temperature / 1104
Exhaust Temperature / 543
Inlet Pressure Drop / 101.6mmH2O
Exhaust Pressure Drop / 63.5mmH2O
Heat Rate / 11630KJ/KW.H
Heat Consumption / 424.1×106KJ/H
Efficiency / 30.95%
Air Flow / 491×103Kg/H
Main supporting equipments and technical specification (standard status)
Compressor
No. / No. 1 gas turbineCompression Grade / 17
IGV Mode / Continuously adjusted
Type / Axial flow
Cylinder / Horizontal mid-separation surface, vertical mid-separation surface
Pressure Ratio / 11．7
Inlet Temperature / 15
Inlet Pressure / 1013 millibar
Rational Speed of
Shaft / 5100 rotates/min
Turbine
No. / No. 1 gas turbineType / Single shaft and axial flow
Grade Number / 3
Rotational Speed / 5100rpm
Cylinder / Horizontal mid-separation surface
Cooling / Air cooling
Combustor
Type: Adverse current can typed combustor
Quantity: 10
Array: As the center of axial line of the unit and arranged according to the circle with same distance
Number: Numbered for air current counterclockwise, No. 10 is at the upper position of 12 o’clock.
Igniter type: exited high pressure electrode type spark plug
Quantity of igniter: 2
Position of igniter: Located in 1# and 10# combustors
Flame detector type: Ultraviolet photoconductive typed flame detector
Quantity of flame detector: 4
Position of flame detector: located in No. 2 , No. 3 , 7# and 8# combustors.
Parameter for supporting equipments
Starting device of the gas turbine
No. 1 gas turbine starting diesel engine
Model: V typed 12- cylinder two stroke water cooling
Model: DETROIT12V71T
Power: 630 horsepower
Rotational speed indolent running: 600+100rpm
Working: 1900rpm
Maximum: 2300rpm
Fuel: light diesel oil
Diesel engine starting equipment: DC motor 88DS
Power: 7.5KW
Rotational speed: 2750rpm
Voltage: 125VDC
Assistant gearbox
Model: A519-B41
Function a. Directly connected with the rotor of the gas turbine;
b. Connected or disconnected with the starting device;
c. Drive the accessory of the gas turbine with corresponding rotational speed.
Rotational speed: a. Coupling of gas turbine: 5100rpm
b. Main lubricating oil pump: 1415rpm
c. Main hydraulic pressure pump: 1415rpm
d. Atomization air compressor: 6000/45561rpm
Load gearbox
Type: 5-644B
Speed ratio: 5100/3000
Rated power: 42900KW
Lubricating oil system:
Main lubricating oil pump:
No. / No. 1 gas turbineModel / Gear box
Rotational Speed / 1415rpm
Volume / 1741C/MCM
Outlet Pressure / 4.56Kg/cm2
Drive / Assistant gearbox
Manufacturer / Nanjing Turbine& Electric Machinery (Group) Co., Ltd.
AC assistant lubricating oil pump
No. / No. 1 gas turbineType / Centrifugal
Flow / 1714L/MCN
Working Pressure / 4.48
Rotational Speed / 2950rpm
Drive / Three-phase motor 88QA(30KW)
Manufacturer / Nanjing Turbine& Electric Machinery (Group) Co., Ltd.
DC emergency lubricating oil pump
No. / No. 1 gas turbineType / Centrifugal
Flow / 946 liter/minute
Working Pressure / 2.1Kg/cm2
Rotational Speed / 1750/2300
Drive / DC motor 88QE(7.5KW)
Lubricating oil box
Full oil level: 305 mm from top
Volume for full oil level: 6433 liter
Low oil level: 4006 mm from top
High oil level alarm 254mm
Low oil level alarm 432mm
Lubricating oil cooler
Type: horizontal shell “U” pipe-typed heat exchanger (water is through the inner pipe while oil is through the outer pipe)
Quantity: 1 for cross loop line layout, one working while one standby.
Normal outlet oil temperature: 54.4+1.7?
Main lubricating oil filtration
Type F3-9XE Filtration precision: 5μ
Quantity 1 (cross loop line layout, exchangeable, one working while one standby)
Maximum working pressure: 8.44 Kg/cm2
Maximum permissible inlet and outlet pressure difference: 1.2 Kg/cm2
Lubricating oil heater (23QT-1,-2)
Type: immersion type heater
Quantity: 1
Parameter: 15 KW 380V, 3-phase, 50HZ, 10.43A
Control oil filtration
Type HP-511-125-1-1
Filtration precision: 5μ
Quantity: 1 (cross loop line layout, exchangeable)
Maximum working pressure: 8.78Kg/cm2
Maximum permissible inlet and outlet pressure difference: 1.2Kg/cm2
Hydraulic oil system
Hydraulic oil pump (PH-1)
Type: piston pump
Rotational speed: 1415rpm
Working pressure: 94.90Kg/cm2
Flow: 68.4L/min
Drive: assistant gearbox
Hydraulic pressure filter (PH-1.2)
Type: single pipe type
Filtration precision: 0.5μ
Quantity: 1 (cross loop line layout, exchangeable)
Maximum permissible inlet and outlet pressure difference: 4.2Kg/cm2
Cooling water system
Cooling water system of No. 2 gas turbine
The cooling water system of No. 2 gas turbine is the closed circulation
With 7 sets of 11 KW cooling fans numbered 88FC-1, 2, 3 and FG-1, 2, 3, 4
CO2 fireproof system
No. 1 gas turbine:
CO2 20 bottles
Among which, 10 bottles are initial
10 bottles are continuous
Specified value of fire probe: 316
IV. No. 1 Boiler
The Q377/535—62—3.8/445 waste heat boiler matched with ＃1 gas turbine is designed by China State Shipbuilding Corporation, 703 Office and produced by Harbin Boiler Factory, which composes of fuel-steam combined cycle unit with the turbo-generator, L15-3.43 manufactured by Nanjing Turbine& Electric Machinery (Group) Co., Ltd., and it was operated in December of 2000.
No. 1 Boiler is circulated naturally in the boiler and the heat transfer is close to forced circulation, the main parts are including high pressure and low pressure steam drums, economizer, super-heater, evaporation water wall pipe and high pressure feed water pump, low pressure feed water pump, deaerator and chemical dosing system.
Main Parameters of No. 1 Boiler:
Equipment Name / Equipment ParametersHigh pressure steam drum / Inner diameter 1200㎜, wall thickness 40㎜, material 20g, internal ly set gas and water separation device, including orifice and corrugated baffle
Low pressure steam drum / Inner diameter 1000㎜, wall thickness 10㎜, material 20g, internal ly set gas and water separation device, including orifice and corrugated baffle
Super-heater / 2 groups of curtain panel, 279 tubes the specification is 32*3, material: 15crmo, and 7.8m long
High pressure evaporator / 8 groups of curtain panel, 1188 tubes the specification is 32*3, material: 20g, and 7.8m long
Economizer / 6 groups of curtain panel, 884 tubes the specification is 32*3, material: 20g, and 7.8m long
Low pressure evaporator / 3 groups of curtain panel, 347 tubes the specification is 32*3, material: 20g, and 7.8m long
Deaerator / Rated output: 75t/h, working pressure: 0.2 bar, working temperature: 104℃, manufactured by Wuxi Power Boiler Auxiliary Equipment WOrks
Entrance smoke damper / Tee joint baffle device, patent product of Harbin 703 office
Soot blower / Pulse blasting type soot blower, manufactured by Harbin Modern Technology Co., Ltd.
Blowdown system / Type: DP-3.5, cubage: 3.5 m3, working pressure: 1.5BAR manufactured by Wuxi Boiler Factory
Steel fame and wall plate of the boiler / I-beam, heat preservation thickness 150㎜, inner guard plate is stainless steel plate
Transition flue duct / I-beam, heat preservation thickness 150㎜, inner guard plate is stainless steel plate
Chimney / Diameter: Ф2000㎜, 25 m high and the steel plate is 14㎜ thick
Parameters of Auxiliary Equipments
No. / Equipment Name / Quantity / Device Parameters1 / High pressure feed water pump / 2 / Model: DG85-67, lift: 536M, flow: 85t/h, manufacturer: Changsha Water Pump Factory
2 / Low pressure feed water pump / 2 / Model: DG12-25, lift: 75M, flow: 12.5t/h, manufacturer: Shandong Rizhao Motor Factory
3 / Make-up pump / 2 / Model: IH80-50-200, lift: 50M, flow: 50t/h, manufacturer: Xinxiang Water Pump Factory
4 / Air compressor / 3 / Mode: HRDRVAND, pressure: 8BAR, flow: 2.1㎡/min and manufacturer: Scotland
5 / Dosing device / 2 / Mode: FZM-12/04-07, pressure: 64BAR, flow: 12L/A and manufacturer: Xi’an Nengtai
III. No. 4 Turbine
No. 4 Turbine mainly includes turbine body, condenser system, circulation cooling water system, lubricating oil system, hydraulic oil system, jigger system, rubber ball cleaning system, control oil system and oil cooler.
Main parameters of ＃4 turbine:
Type: single cylinder, medium pressure, impulse condensing turbine
Ex-factory date: January of 1999
Delivery date: 2000
Entrance steam pressure of automatic main stop valve: 3.43 MPa
Max: 3.63 MPa
Min: 3.14 MPa
Entrance steam temperature of automatic main stop valve: 440
Max: 450℃
Min: 420℃
Rated steam flow: 58.5T/H
Exhaust pressure: 10.7kPa
Rated rotational speed of turbine: 6300rpm
Rated rotational speed of turbine motor: 3000rpm
Turning direction of turbine motor: clockwise (from turbine to motor)
Critical rotational speed of turbine: 1530rpm
Critical rotational speed of turbine-motor: 1836rpm
Connection of turbine and motor: opposite wheel
Steam consumption of turbine: 4.077kg/kW.h (calculation value)
4.199 kg/kW.h (guarantee value)
Heat consumption of turbine: 12711 kj/kW.h (calculation value)
13092 kj/kW.h (guarantee value)
Entrance temperature of cooling water: 30℃
Flow of cooling water: 3000m³/H
Permissible max vibration of turbine bearing: 0.03mm
Permissible max vibration for critical rotational speed: 0.10mm
Unequal rate of rotational speed: 5±1﹪
Stagnant rate of system: 0.5﹪
Max journey of oil engine: 107mm
Empty load oil engine journey: 20.5mm
Rated load oil engine journey: 88.5mm
Working scope of synchronizer: 2882-3180 rpm (96﹪-106﹪)
Close time for main stop valve: <1.0s
Jigger
Type: AC motor drive, worm wheel and worm devices drive rotor jigger
Rotational speed: 15-6 rpm
Oil system design parameters
Type of lubricating oil: L-TSA46# turbine oil
Flow of lubricating oil:
Inlet pressure of main oil pump: 0.049 MPa
Outlet pressure of main oil pump: 0.637 MPa
Normally run lubricating oil pressure: 0.078 -0.147 MPa
Normally run lubricating oil temperature: 35℃-45℃
Control oil pressure: 0.637MPa
Pulse oil pressure: 0.343 MPa
Volume of lubricating oil box: 3.3M³
Turbine control and safety device
The machine adopts completely hydraulic adjustment and security system.
Technical parameters for main auxiliary devices of No. 4 Turbine ：
Main oil pump ： one set
Type: centrifugal
Inlet pressure of main oil pump: 0.049 MPa
Outlet pressure of main oil pump: 0.637 MPa
Drive mode: main shaft drive of turbine
Manufacturer: Nanjing Turbine& Electric Machinery (Group) Co., Ltd.
Delivery date: 2000
AC electric speed control oil pump： one set
Type: 80Y-60
Lift: 58 m water column
Flow: 50 m³/H
Rotational speed: 2950 rpm
Shaft power: 18.5 kw
Cavitation remains: 3m
Manufacturer: Shanghai Water Pump Factory
Drive motor: 18.5 kw, 380V, 35.5A, 2930 rpm
AC auxiliary oil pump： one set
Type: 50Y-60B
Lift: 38 m water column
Flow: 9.9 m³/H
Rotational speed: 2900 rpm
Shaft power: 5.5 kw
Cavitation remains: 2.3m
Drive motor: 4kw, 380V, 8.17A
Manufacturer: Shanghai Water Pump Factory
Accident DC oil pump: one set
Type: 50Y-60B
Lift: 37 m water column
Flow: 9.9 m³/H
Rotational speed: 2950 rpm
Shaft power: 5.5 kw
Cavitation remains: 2.3m
Drive motor: 5.5kw，220VDC ，31A
Manufacturer: Shanghai Water Pump Factory
Condenser： one set
Type: equal two-guide system surface regenerator
Model: N-1000-2
Tube quantity: 3540
Tube diameter: Dn18mm
Tube length: 4562mm
Cooling area: 1000m²
Exhaust pressure of turbine: 0.00843MPa
Exhaust of turbine: 58160m³/H
Cooling water temperature: 25℃
Cooling water pressure: 0.245MPa
Tube material: HSn70-1RE，Y²
Vacuum pump ： two sets
Model: 2BE 253-GBD4 water ring type
Absorbed absolute pressure: 1013-33 hpa