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

• Transport Package: Standard
• Specification: 3x16mw
• Trademark: Nanjing
• Origin: China
• Model NO.: steam turbine
• Production Capacity: 3

Product Description

1,Specification of steam turbine

1. Manufacturer :Najing Steam Turbine Motor Factory
2. Model :B6-4.90/0.981
3. Rated power :6MW
4. Rated rotary speed:3000r/min
5. Rotary direction:clockwise as steam flux direction
6. Criticality rotary speed:1596r/min
7. Front steam pressure of main steam valve :4.90_-0.3^+0.2 MPa
8. Front steam temperature of main steam valve :470ºC_-15⁺¹⁰
9. Exghaust steam absoulate pressure:0.981MPa
10. Rated exghaust steam temperature :291.5ºC
11. Movity pressure of safety door :1.23MPa
12. Max vibration of bearing over criticality rotary speed:≤0.15mm
13. Max vibration of bearing at working rotary speed:≤0.03mm
14. Efficient of steam turbine at working condition:0.7517
15. Loss of steam turbine at working conditions:11.48kg/kwh
16. Thermal loss of steam turbine ar working conditions:4049kJ/kwh
17. Body weight of steam turbine :31t
18. Disconnect plat weight :9.2t
19. Rotary of steam turbine weight :1.906t
20. Size of steam turbine :(L×W×H)4582×2660×3085mm
21. Middle height of steam turbine :750mm

2,Specificaiton of generator set

1. Generator

Model :QFW-6.8-2
Rated power :6800kw
Rated rotary speed :3000r/min
Voltage :6300V

1. Excitor

Model :TFLW50-3000
Power :50kw
Voltage :163V
Current :307A
3,Auxillary equipments

1. Oil tank :V=3300liter
2. Clloing condensing unit :

Model :YL-20-2
Cooling area:20m2
Oil side pressure :0.99MPa
Water side pressure :0.66MPa

1. Oil filter :LY-80
2. Air 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/h

1. steam seal heater :JQ-10/20
2. High pressure AX OIL pump

MODEL :100Y-1200             
FLUX :79m3/h         
LIFT :75m
MOTOR CAPACITOR :37kw  
ROTARY SPEED :2950r/min
Rted current :69.8A                
Rated voltage :380V

1. Accudnt 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 SYSTEM

1. STEAM TURBINE RATED ROTARY SPEED:              3000r/min
2. Main oil pump output oil pressure:             1.08MPa
3. Impulse pump output oil pressure :             0.687MPa
4. Oil pump group Inlet oil pressure :                     0.098MPa
5. Synchronizer adjustment range without load:             2880~3180r/min   
6. Regulator regulation range:                          0.785~1.275MPa
7. Speed Unequal rate                                5±1%
8. Pressure unequal rate                               ≤10%
9. Speed regulation System delay rate:                    ≤0.5%
10. Impulse oil pressure (first time) :                     0.392MPa
11. Oil Motive Stroke without load:                       13mm
12. Oil Motive Strokewith load:                          76.8mm
13. Emergency breaker working speed:                    3270~3330r/min 
14. Emergency breaker recovery speed:                    <3050r/min,by manual 
15. Emergency breaker working speed at oil spouting test :     2920±30r/min 
16. Working speed of digital speed meter:          3360r/min 
17. Rotor axial Displacement alarm value :                +1.0~-0.6mm
18. Rotor axial Displacement protative value:                +1.3~-0.6mm
19. Bearing return oil temperature alarm value:              65ºC
20. bearing return oil temperature protative value:              75ºC
21. bushing Temperature alarm Value                                 105ºC
22. bushing Temperature Protection Value:                 110ºC
23. lube oil pressure lower:                        ≤0.05MPa high pressure pump start
24. lube oil pressure lower :                      ≤0.04MPaDC oil pump start
25. lube oil pressure lower (protetive)         ≤0.02MPa stop
26. lube oil pressure lower                       ≤0.015MPa stop
27. lube oil pressure riser                       ≥0.12MPa high pressure oil pump stop
28. lube oil pressure riser :                    ≥0.15MPa DC oil Pump  
29. auto main steam door shut down time :        <1s