Meet the SGT-750
Proven technology
Perfected results
37 MW
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© Siemens AG 2010. All rights reserved
Utility Turbines
Siemens Industrial gas turbine range
SGT5-8000H
375
SGT5-4000F
287
SGT6-8000H
266
Industrial Turbines
SGT6-5000F
SGT5-2000E
SGT6-2000E
SGT-800
SGT-750
SGT-700
SGT-600
SGT-500
SGT-400
SGT-300
SGT-200
SGT-100
198
168
113
47
36
Filling the gap
31
25
17
13
8
7
5
(MWe)
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© Siemens AG 2010. All rights reserved
SGT-750 General description
13-stage compressor
Shaft
Electric
Comb. cycle
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Power
37.1 MW
35.9 MW
47.7 MW
4th generation DLE technology
Dual-fuel capability
Efficiency
40.0%
38.7%
51.7%
Free power turbine
6 100 rpm
Exhaust
Mass flow
Temperature
113 kg/s
462 ºC
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Compressor
2 variable guide vanes
3 Compressor Bleeds
13 stages
Pressure ratio 24:1
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SGT-750 Inlet and Compressor
Visual access to
compressor inlet during
operation
Electrical starter motor in
front of compressor
Low-weight inlet plenum
on wheels for easy
maintenance
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Borescope ports
for each stage
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Combustor system
4th generation DLE burner
Single-digit NOx capability
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8 combustor cans
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Combustor design
Convective combustor cooling
Combustor can
Transition duct
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4th generation DLE burner
Combustion air path
Second main gas fuel
First main gas fuel
Pilot gas fuel
RPL gas fuel
(Rich Pilot Lean)
Single digit NOx capability
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Combustor Verification
Experience from Siemens gas turbine fleet
Atmospheric Test
Combustion System
Ignition Tests and Combustion Tests
Flow tests
Medium-pressure Test
Optimization of burner
Flame-detector test
Ignition test
High-pressure Test
Burner tests
Combustion test
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Flow test of casing, burner
and combustor
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Turbine
Two-stage counter-rotating
Un-cooled power turbine
Two-stage air-cooled compressor turbine
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Compressor Turbine
IR camera access to blades 1 & 2
Two turbine stages
Conventional materials
Bolted to compressor rotor
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Brush seals
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SGT-750 Infra-red camera ports
A temperature-sensitive
camera can measure the
temperature pattern of
each blade and if the
temperature is out of
range measures can be
taken.
IR camera port
Blade
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© Siemens AG 2010. All rights reserved
SGT-750 Industrial power turbine
2-stage high-speed (6100 rpm) Power Turbine
Compact and efficient
Suitable for both power generation and mechanical drive
Power turbine inlet guide vane can be set for different ambient conditions
Two shrouded uncooled blades
and honeycomb seals
Bolted rotor
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High efficiency diffuser
Two tilting pad (long life) bearings
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Package layout
Power generation
Air intake
Exhaust
Auxiliary room
AC-generator
Main Gear
Maintenance crane
GT room
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Maintenance door
Foot print
Power generation 20,3 x 4,8 m
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Package layout
Mechanical drive
Same driver as PG
Footprint:
Driver package 12.8 x 4.3 m
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Built-in serviceability
In the full-scale 3D model it was discovered that it was difficult and
time-consuming to exchange instrumentation on the power turbine.
Solution:
The Power turbine was
redesigned utilizing the
3D model and the
instrumentation exchange
was verified in the 3D
model.
This is an example of how
uptime is increased using
new design tools.
Core engine 3-D model in studio
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Maintenance
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Excellent maintenance concept for
lowest life-cycle cost
•
•
•
•
•
•
Long time between major overhauls TBO 68,000 EOH
Highest uptime - only 17 maintenance days in 17 years
24-hour gas generator exchange in the swap concept
On-site or swap service concept
Increased TBO at part-load operation
Complete compressor reblading without rotor removal
possible
• No casing disassembly for replacement of combustion parts
• Modular build-up for easy maintenance on site
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Maintenance Plan
17 downtime days or 48 days on-site
Fast Maintenance
Normal Maintenance
1 day A-inspection (Borescope)
1 day A-inspection (Borescope)
2 days B-inspection (Gas Generator Exchange)
12 days B-inspection (Hot Section Parts
5 days C-inspection (Gas Generator Exchange
with Power Turbine Inspection)
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Replacement)
16 days C-inspection (Overhaul)
© Siemens AG 2010. All rights reserved
SGT-750 Summary
Highest uptime in class
High power output and high efficiency
Siemens well proven DLE technology gives reliable combustion
Smart service concept with 68’ hours between major overhauls
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© Siemens AG 2010. All rights reserved
Thanks for your attention
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© Siemens AG 2010. All rights reserved
