(2) Casing
- Horizontally-Split
(3) Rotor
- Two bearings - Hollow shaft - Disks interlocked via Hirth serrations - Disks axially fixed via Central tie bolt
Oct. 2004
Power Generation 14
PG G 2 GT/Dr. Thien
Air Flows inside the Rotor
Oct. 2004
Power Generation 15
PG G 2 GT/Dr. Thien
V84.3A Compressor
Oct. 2004
Power Generation 16
Oct. 2004
Power Generation 5
PG G 2 GT/Dr. Thien
Siemens Gas Turbine Family VX4.3A (1996)
Annular combustor
Compressor
15 stages Pressure ratio 16.9 Mass flow 645 kg/s CDA-profiles with side-wall correction
2001: TISO = 1230 C 398 MW / 58.4 %
Rotor
No alterations
*) COC = Corrosion and Oxidation Coating, TBC = Thermal Barrier Coating
Oct. 2004
Power Generation 6
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
Basic Rotor Designs
Oct. 2004
Power Genera Design
Design features
- Radial serration between all rotor
parts (Hirth-Serration) - Central tie bolt
Total Experience >500 units installed 80 units committed 22 million hours
CombustionChamber Compressor Turbine
24 Hybrid Burners
A Series Experience 143 units (>30 ordered) 2,315,287 hours October 2004
Compressor size
-Compressor mass flow Rate -Power output
Speed
9=50 Hz 8=60 Hz 6=90 Hz (Gearbox)
Combustion machine
(German: Verbrennungskraftmaschine)
Oct. 2004
Single Digit NOx Emission 1 2 3 Lufttemperatur 400 C Air temperature = 400 C Residential times (ms): 1 Silo-combustor 150 2 Annular combustor 30 3 Can-combustor 15
PG G 2 GT/Dr. Thien
Siemens Compressor Blade Evolution
V84.3
V84.3A Row 1 Blades
Oct. 2004
V84.3A CDA blade of a rear stage with side-wall correction
Power Generation 17
PG G 2 GT/Dr. Thien
V94.3A Gas Turbine Design Features
8 6 5 7 4 1 2 3
(1) Generator coupling
- At cold end drive
(5) Combustion System
- Annular chamber - 24 Hybrid Burners - Ceramic and metallic heat shields
For Example:
V94.3A
Annular combustion chamber Development state
3=3rd generation
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) Combined cycle or SC: Simple cycle No. of CC or SC blocks
Power Generation 9
3_0_0_0_1 PG G 2 GT/Dr. Thien © PG W81
Performance Data of 50 Hz Siemens Gas Turbines
Engine (50 HZ) Speed Introduction Air Flow Exhaust Flow Pressure Ratio ISO Temperature RIT (Rotor Inlet T.) TIT (Turbine Inlet T.) Exhaust Temperature NOx (Gas Operation) SC Power SC Efficiency CC Power CC Efficiency
PG G 2 GT/Dr. Thien
NOx-Emission vs. Combustion Temperature & Residential Time
Residential Time (ms) The NOx-Emission depends on CT only (with a given residential time) NOx-Emission (ppm) Emission
(6) Burners
- Dry low-NOx technology - Multiple fuels capability
(7) Turbine
- 4-Stage - Advanced cooling technology - Thermal barrier blade coatings - Film cooling of blade airfoils
(4) Compressor
- 15-Stage - Optimized flow distribution - Variable inlet guide vanes
Oct. 2004
(8) Exhaust
- Axial
Power Generation 7
PG G 2 GT/Dr. Thien
Siemens VX4.3A1) with Annular Combustor
Advantages
- Safe torque transmission
- Precise centering of all rotor parts, also with different radial extension of the parts - No disturbation of the rotational 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 of the tie bolt force with hydraulic loading equipment
Annular Combustor with 24 Hybridburners
Turbine
Compressor
Oct. 2004
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
V94.3A(2) 3000 1998 645 659 16.9 1230
V94.2A 3000 1999 522 532 14.0 1174
576 25 272 39.0 383 58.4
572 25 192 35.8 285 56.3
Oct. 2004
Power Generation 10
PG G 2 GT/Dr. Thien