1X6.8MW Steam Turbine with Generator Set and Auxiliary Equipment of Coal Power Plant

1,Specification of steam turbine Manufacturer :Najing Steam Turbine Motor FactoryModel :B6-4.90/0.981Rated power :6MWRated rotary speed:3000r/minRotary direction:clockwise as steam flux directionCriticality rotary speed:1596r/minFront steam pressure of main steam valve :4.90-0.3+0.2 MPaFront steam temperature of main steam valve :470ºC-15+10Exghaust steam absoulate pressure:0.981MPa Rated exghaust steam temperature :291.5ºCMovity pressure of safety door :1.23MPaMax vibration of bearing over criticality rotary speed:≤0.15mmMax vibration of bearing at working rotary speed:≤0.03mmEfficient of steam turbine at working condition:0.7517Loss of steam turbine at working conditions:11.48kg/kwhThermal loss of steam turbine ar working conditions:4049kJ/kwhBody weight of steam turbine :31tDisconnect plat weight :9.2tRotary of steam turbine weight :1.906tSize of steam turbine :(LxWxH)4582x2660x3085mmMiddle height of steam turbine :750mm2,Specificaiton of generator setGenerator Model :QFW-6.8-2
Rated power :6800kw
Rated rotary speed :3000r/min
Voltage :6300VExcitor Model :TFLW50-3000
Power :50kw
Voltage :163V
Current :307A
3,Auxillary equipmentsOil tank :V=3300liter Clloing condensing unit :Model :YL-20-2
Cooling area:20m2
Oil side pressure :0.99MPa
Water side pressure :0.66MPaOil filter :LY-80Air cooling unit Model :LRW3-230
Max pressure :0.196MPa
Power :230kw
Wind flux :7.5m3/s
Water pressure lower :0.0051MPa
Wind resistor pressure lower :288Pa
Clooing water temperauture :≤33ºC
Consumption of water :65m3/hsteam seal heater :JQ-10/20High pressure AX OIL pumpMODEL :100Y-1200
FLUX :79m3/h
LIFT :75m
MOTOR CAPACITOR :37kw
ROTARY SPEED :2950r/min
Rted current :69.8A
Rated voltage :380VAccudnt DC oil pump MODEL :2CY-18/3.6-1
FLUX :18m3/h
LIFT :36m
MOTOR CAPACITOR :5.5kw
ROTARY SPEED :1000r/min
RATED CURRENT :30.4A
VOLTAGE :220V
4.SPECIFICAITON OF REGUALTION AND SEFETY SYSTEMSTEAM TURBINE RATED ROTARY SPEED: 3000r/minMain oil pump output oil pressure: 1.08MPaImpulse pump output oil pressure : 0.687MPaOil pump group Inlet oil pressure : 0.098MPaSynchronizer adjustment range without load: 2880~3180r/min Regulator regulation range: 0.785~1.275MPaSpeed Unequal rate 5±1%Pressure unequal rate ≤10%Speed regulation System delay rate: ≤0.5%Impulse oil pressure (first time) : 0.392MPa Oil Motive Stroke without load: 13mmOil Motive Strokewith load: 76.8mmEmergency breaker working speed: 3270~3330r/min Emergency breaker recovery speed: <3050r/min,by manual Emergency breaker working speed at oil spouting test : 2920±30r/min Working speed of digital speed meter: 3360r/min Rotor axial Displacement alarm value : +1.0~-0.6mmRotor axial Displacement protative value: +1.3~-0.6mmBearing return oil temperature alarm value: 65ºCbearing return oil temperature protative value: 75ºC bushing Temperature alarm Value 105ºCbushing Temperature Protection Value: 110ºClube oil pressure lower: ≤0.05MPa high pressure pump start lube oil pressure lower : ≤0.04MPaDC oil pump startlube oil pressure lower (protetive) ≤0.02MPa stoplube oil pressure lower ≤0.015MPa stoplube oil pressure riser ≥0.12MPa high pressure oil pump stoplube oil pressure riser : ≥0.15MPa DC oil Pump auto main steam door shut down time : <1s