- Central tie bolt
Advantages
- Safe torque transmission
- Precise centering of all rotor parts,
also with different radial extension
of the parts
- No disturbation of the rotational
Power Generation 3
PG G 2 GT/Dr. Thien
Scaled VX4.3A Row 1 Turbine Vanes
Oct. 2004
Power Generation 4
PG G 2 GT/Dr. Thien
Scaled Rotors (V94.3, V64.3)
Oct. 2004
Total Experience >500 units installed 80 units committed 22 million hours
CombustionChamber Compressor
Oct. 2004
Turbine 24 Hybrid Burners
A Series Experience 143 units (>30 ordered) 2,315,287 hours October 2004
Power Generation 5
PG G 2 GT/Dr. Thien
Siemens Gas Turbine Family VX4.3A (1996)
Oct. 2004
Annular combustor
2001: TISO = 1230 C 398 MW / 58.4 %
Compressor
15 stages Pressure ratio 16.9 Mass flow 645 kg/s CDA-profiles with side-wall correction
Residential Time (ms)
The NOx-Emission depends on CT only (with a given residential time)
NOx-Emission (ppm)
1

23
Combustion Temperature (C)
Oct. 2004
Single Digit NOx Emission
Basic Rotor Designs
Oct. 2004
Power Generation 11
PG G 2 GT/Dr. Thien
Rotor Design
Oct. 2004
Design features
- Radial serration between all rotor parts (Hirth-Serration)
Rotor
No alterations
*) COC = Corrosion and Oxidation Coating, TBC = Thermal Barrier Coating
Power Generation 6
PG G 2 GT/Dr. Thien
1
Oct. 2004
V94.3A Gas Turbine Design Features
西门子燃气轮 机介绍
Oct. 2004
Power Generation 1
PG G 2 GT/Dr. Thien
Development of the SIEMENS GT-Efficiency
Oct. 2004
Power Generation 2
PG G 2 GT/Dr. Thien
Siemens Vx4.3A Gas Turbine
Combined cycle or SC: Simple cycle
No. of CC or SC blocks
Oct. 2004
Power Generation 9
PG G 2 GT/Dr. Thie3n_0_0_0_1 © PG W81
Performance Data of 50 Hz Siemens Gas Turbines
Combustor
Integrated annular combustor Lining: air-cooled metallic heat shields or ceramic tiles 24 hybrid burners
NOx < 25 ppm (gas)
Turbine
4 stages Single crystal row 1&2 blades COC and TBC *) 4+3 vane and blade rows cooled Row 1&2 vanes and row 1 blade with film cooling
(7) Turbine
- 4-Stage - Advanced cooling technology
(4) Compressor - Thermal barrier blade
- 15-Stage
coatings
- Optimized flow
- Film cooling of blade
distribution
Combustion machine
(German: Verbrennungskraftmaschine)
n CC 2.V94.3A n CC 2.W501F
Designation of gas turbine model
No. of gas turbines per block (Mult-shaft arrangement, 1S=single-shaft arrangement)
shields
(3) Rotor
(6) Burners
4
2
- Two bearings
- Hollow shaft
- Dry low-NOx technology - Multiple fuels capability
- Disks interlocked via Hirth serrations - Disks axially fixed via Central tie bolt
NOx (Gas Operation) ppm
SC Power
MW
SC Efficiency
%
CC Power
MW
CC Efficiency
%
V94.2 3000 1981 510 519 11.1 1060 1105 1125 540 25 157 34.4 238 52.1
V64.3 5400 1990 189 192 16.1 1130 1250 1300 530 25 63 35.3 90 51.5
V94.3A(2) 3000 1998 645 659 16.9 1230
576 25 272 39.0 383 58.4
V94.2A 3000 1999 522 532 14.0 1174
572 25 192 35.8 285 56.3
Oct. 2004
Power Generation 10
PG G 2 GT/Dr. Thien
airfoils
- Variable inlet guide
vanes
(8) Exhaust
- Axial
Power Generation 7
PG G 2 GT/Dr. Thien
Siemens VX4.3A1) with Annular Combustor
Annular Combustor
Oct. 2004
ALiur fttetemmppeeraratuturer =404000C C
Residential times (ms):
1 Silo-combustor
150
2 Annular combustor 30
3 Can-combustor
15
Air number l
Power Generation 18
of the tie bolt force with hydraulic
loading equipment
Power Generation 12
PG G 2 GT/Dr. Thien
Hirth-Serration of a Compressor Disc
Hirth-Serration
Oct. 2004
1) A = Annular Combustor
Power Generation 8
PG G 2 GT/Dr. Thien
Siemens Designation of Gas Turbines, Simple Cycle- and Unfired Combined Cycle- Power Plants
symmetry of the rotor, also with
changing tie bolt force
- Capabilty of on-site rotor
disassembly and
reassembly
without the
need of rebalancing
- Simple generating and adjustment
For Example:
V94.3A
Annular combustion chamber
Development state
3=3rd generation
Compressor size
-Compressor mass flow Rate -Power output
Speed
9=50 Hz 8=60 Hz 6=90 Hz (Gearbox)