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8/7/2019 Attachment 08 - Milan conference 2005
1/12
Power Generation 1
P11M Wieghardt
2005-10-27
Siemens Steam Turbine Design
for AD700 Power Plants(AD700 financed activities)
Kai Wieghardt
8/7/2019 Attachment 08 - Milan conference 2005
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2005-10-27 Power Generation 2P11MWieghardt
AD700 Siemens Turbine Designs, AD700 Conference, Milan
Contents
1. Thermodynamics, Arrangement & Materials
2. HP Turbine Design
3. IP Turbine Design
4. Turbine Valves Design & COMTES700
5. Summary
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AD700 Siemens Turbine Designs, AD700 Conference, Milan
700C/720C Turboset (400 MW Single RH)Water Steam Cycle and Turbine Arrangement
350bar / 700C / 270kg/s
60bar / 720C / 220kg/s
5bar / 320C / 180kg/s
64bar / 410C
HP IP LP
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AD700 Siemens Turbine Designs, AD700 Conference, Milan
350/700C
60/720C
285/600C
64/355C
64/410C
60/620C
HP
IP
700C HP Turbine:
Inlet temperature
Inlet pressure Enthalpy drop
720C IP Turbine:
Inlet temperature
~ Inlet pressure~ Enthalpy drop
5/320C
LP4.5/230C
Steam Cycles 600C/620C vs. 700C/720CIP Turbine
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AD700 Siemens Turbine Designs, AD700 Conference, Milan
350/700C
64/410C
Solution: Barrel type HP Turbine design with Cooling
Pressure containment in vessel without horizontal flanges Symmetric inner casing without internal pressure
Best possible containment of hot main steam
700C HP Turbine:
Inlet temperature
Inlet pressure Enthalpy drop
Steam Cycles 600C/620C vs. 700C/720CConclusions for HP Turbine Design
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2005-10-27 Power Generation 6P11MWieghardt
AD700 Siemens Turbine Designs, AD700 Conference, Milan
700C HP TurbineLongitudinal Section with External Cooling
Exhaust steam 64bar / 410C
Cooling steam from MS heater Main steam 350bar / 700C
HP IP
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AD700 Siemens Turbine Designs, AD700 Conference, Milan
60/720C
Solution: Proven design using
Superalloys and Cooling5/320C
Steam Cycles 600C/620C vs. 700C/720CConclusions for IP Turbine Design
IP
720C IP Turbine:
Inlet temperature
~ Inlet pressure
~ Enthalpy drop
4.5/230C
60/620C
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2005-10-27 Power Generation 8P11MWieghardt
AD700 Siemens Turbine Designs, AD700 Conference, Milan
720C IP TurbineLongitudinal Section with External Cooling
Hot Reheat steam 60bar / 720C
Exhaust steam 5 bar / 320C
Cooling steam from CRH
HP IP
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AD700 Siemens Turbine Designs, AD700 Conference, Milan
720C IP TurbineWelded Rotor Design
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AD700 Siemens Turbine Designs, AD700 Conference, Milan
Test of a critical 700C Turbine Component:COMTES700 Turbine Valve
COMTES700 Turbine Valve Test
Test Phase 2005 2009
Full-scale component (4000kg)exposed to 210 bar / 705C
Main objectives:
Sliding & contact surfaces
Creep & LCF Volumetric contraction
100% privately financed
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AD700 Siemens Turbine Designs, AD700 Conference, Milan
COMTES700 Turbine ValveErected Valve with Actuator
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AD700 Siemens Turbine Designs, AD700 Conference, Milan
Siemens AD700 Turboset for 350bar/700C/720C has aclassical HP-IP-LP arrangement
HP turbine with proven barrel type design by using aninnovative external cooling concept
IP turbine with proven design and external CRH cooling
Main steam and reheat valves with proven design
Further 700C development steps are necessary including
lessons learned from COMTES700 (design optimisation,materials testing, design philosophy)
Siemens is engaged for this with large private investment.
Summary