Beijing Power Equipment Group Co., Ltd. (BPEG) has been developing and designing boiler feed-water pump turbine (BFPT) since 1983, and has formed the serialized products to equip 200MW to 600MW unit. The first BFPT was put into operation in Shanghai Shidongkou Power Plant in 1987. Today, approximately 500 sets of turbines are in operation domestically. Our products are well known for high market share and good customer feedback. Besides typical BFPT, we can also design turbine according to customers' requirements.
TGQ type turbine adopts design of single cylinder, impulse type, dual steam supply, variable speed,and condensing type. The product has the advantages of light weight, small axial thrust force, adaptive to quick load change, and little leakage in blade tip and shaft seal. Meanwhile, utilization of inner-switch of steam supply, and nozzle controlling system enable more reliable operation, as well as more smooth switching of steam supply.
TGQ10/6-1 Boiler Feed Water Pump Turbine
1: Turbine Base 6: 1#Joint Bearing 11: Low-pressure Spray Nozzle 16: Forth-grade Bulkhead 21: Low-pressure Shaft Seal
2: Spring Board Stand 7: Electrohydraulic Servo Valve 12: Low-pressure Steam Chamber 17: Fifth-grade Bulkhead 22: 2#Joint Bearing
3: Turning Device 8: Oil Engine 13: Steam Distribution Device 18: Sixth-grade Bulkhead 23: Rotor
4: Front Box 9: High-pressure Shaft Seal 14: Second-grade Bulkhead 19: Bulkhead Vapor Seal 24: High-pressure Spray Head
5: Crisis Protector 10: Vapor Seal 15: Third-grade Bulkhead 20: Large Air Valve
- Impulse Type
› Less hubs on rotor blades, smaller size, lighter body. The turning gear is of centrifugal sliding key detachment type and avoids using of gears, so as to lower the failure rate.
› Low differential pressure between front and back of rotor blades, little air leakage on blade tips and shaft seals. Leakage has little influence on efficiency.
› Axial direction thrust force is weak, so there's little loading on bearings, lower oil consumption, and little loss.
› Big transition fillet of rotor, low stress concentration factor, low thermal stress on rotors, and more adaptive to quick loading change.
- Inner Switch of Steam Supply
› Utilization of inner steam inner switch mode enables smooth operation in 0 - 100% loading, and has characteristics as follows:
› Simplified steam supply system makes the operation more stable by smoothing steam switching without vibration.
› High pressure steam inlet system is separated from the turbine itself so as to reduce thermal shock to the turbine.
› Can be started with high pressure steam and operates flexibly.
› Relatively low humidity in high pressure steam operation.
- High Standard Materials
› BPEG abides by the principle of using high-standard materials on key parts, so as to guarantee service life of turbine exceeding 30 years, repair cycle not less than 6 years, and materials do not deform after long time operation.
Additional to supplying high quality feed-water pump turbine, we also provide specified retrofit services to customers, including
› increase feed-water pump turbine power and efficiency
› optimize the hydraulic system
› alter motor-driven pump to turbine-driven pump
BPEG has been providing turbine maintenance services since 1952 and has accumulated quantity of experience. The overhauling of turbine rotors has become our characteristic services that we provide to power plants.