Dr. Lutz Völker / Katja Riebisch - Siemens AG ...m.energy.siemens.com/us/pool/hq/energy-topics/publications... · Dr. Lutz Völker © Siemens AG 2014 All rights reserved. Page 2

© Siemens AG 2014 All rights reserved. VGB-Fachtagung „Dampfturbinen und Dampfturbinenbetrieb 2014“21./22. Mai 2014, Rhein-Mosel-Halle, Koblenz

Enhanced PlatformThe next generation of reliable and highly efficient Siemens industrial steam turbines

Dr. Lutz Völker / Katja Riebisch - Siemens AG - Industrial Power

Dr. Lutz Völker

© Siemens AG 2014 All rights reserved.

Page 2VGB-Fachtagung „Dampfturbinen und Dampfturbinenbetrieb 2014“

21./22. Mai 2014, Rhein-Mosel-Halle, Koblenz

Industrial Steam Turbine Applications

Electrical Power GenerationBiomass power plantsWaste combustion power plantsCombined cycle power plantsHeat and Power plantsSolar power plants

Steam ConditioningPulp and Paper industryMining industryChemical and petrochemical industry

Mechanical DrivesPumpsBlowerCompressors

Dr. Lutz Völker




The Heritage of Siemens Industrial ST Technology

0 100 200 300

SST-900

SST-700

SST-800

SST-600

SST-500

SST-400

SST-300

SST-200

SST-150

SST-120

SST-110

SST-100

SST-060

SST-050

SST-010

Dr. Lutz Völker




Motivation

External requirementsUse of state of the artdesign allowing significant gainsExtended features e.g. optimized start-up timeExtended operating capabilitiesIncreased flexibility to adapt to customer needsIncreased efficiencyImproved economical solutions

Internal driversAcquisition history led to overlap in product portfolio and power rangeHuge variation of Steam Turbine Types incl. the maintenance of the toolsImplementation of advantages of all families into one product Incorporation of new state of the art features

Enhanced Platform

Dr. Lutz Völker




Enhanced PlatformCustomization

Turbine configurations including a high degree of flexibility to realize optimal turbine solutions according customer needs

Fix speed direct / geared drive and variable speed turbine solutions including different exhaust and installation arrangementsHigh flexibility in number of steam extractions (controlled and/or uncontrolled)High flexibility in the extracted total mass flow / volumetric flow conditionsHigh flexibility in the electrical output power level according customer requirementsDifferent standard turbine arrangements and installations allow customization

Enhanced Platform

Dr. Lutz Völker




Enhanced PlatformBuilding Block Approach

Using predefined components to cover different turbine solutions and applications

The Enhanced Platform is not a product lineThe Enhanced Platform is a technology platform allowing to realize different product lines such as customized and standardized turbine configurations as single and multi casing solutionsCombination of benefits from all Siemens product lines considering state of the art developments/technologiesBased on the Enhanced Platform technology the Siemens product lines will be improved and extended in their application fields

Dr. Lutz Völker




Enhanced PlatformKey Parameters

Power output 5 – 250 MWSpeed 3000 – 18000 rpm

Live steamInlet pressure/temp 165 bar / 565 ºC Inlet pressure/temp 2393 psi / 1049 ºF

Controlled extractions (up to 2)Pressure, ext. valve 72 bar / 1044 psiPressure, int. valve 55 bar / 798 psiTemperature 480 ºC / 895 ºF

Bleeds (up to 6) 85 bar / 1233 psi

Exhaust conditionsBack-pressure 80 bar / 1160 psiCondensing 1.0 bar / 15 psiDistrict heating 3.0 bar / 43 psi

ImprovementsPower output +75 MWInlet temperature +25 KExtraction pressure +20 bar / 290 psi

Dr. Lutz Völker




Enhanced PlatformModularization

Maximum flexibility due to standardization at sub-part level

Steam Admission Section

Intermediate Section

Exhaust Section

Dr. Lutz Völker




Enhanced PlatformTurbine Configurations

Different casing configurations allow optimized customer solution focused on efficiency and cost

Optimized casing structure provides reduced start-up timesDifferent design solutions provides customized competitive turbine solutionsSpecialized options allow high temperatures with short heat-up times as well as competitive solutions for low steam parameters

Front Steam Admission

Center Steam Admission

Conventional design steamadmission

Improved steam admission design including homogenous casing structure

Dr. Lutz Völker




Enhanced PlatformBlading and Sealing

Improved blade profiles and material know-how provide highest efficiency

Improved cylindrical HP blades and conical (twisted) IP blades allow longer airfoils Improved sealing systematic allows more sealing strips per blade row at both moving and stationary3D optimized HP/IP blades reach highest efficiency, still allowing simple processes in sales, engineering, and production due to predefined sub-componentsApplication of well proven Standard stages for both fix and geared application

Standard SST-xxx (old) customized blade path according customer request (load points)

Standard SST-xxx Enhanced Platform(improved) customized blade path according customer request (load points)

Dr. Lutz Völker




Enhanced PlatformStandard Stages

Best solutions according customer boundary conditions and requirements

Different Standard Stages available within the Enhanced Platform building block system for optimal solutions

E&EL standard stages for 50 and 60 Hz applicationC blades for geared applicationV and SK for variable speed applicationHS for variable speed at high maximum operational speed (Titanium SK blading)

Typ E&EL Beschaufelung

Typ SK/HS Beschaufelung

TypVBeschaufelung

Typ C Beschaufelung

Dr. Lutz Völker




Enhanced PlatformExtractions

Full scope of extractionpossibilities at even higherparameters provides additionaloptions for thermal cycles

Up to 7 extractions in total per casingPressure up to 72 bar/1044 psiControlled extractions (up to 2)

External valves 72 bar/1044 psi (flexible valve combinations)Nozzle group control 55 bar / 798 psi(up to 4 internal valves)Adaptive stageGrid valve

Uncontrolled extractions / bleeds (up to 6)

External valves

Adaptive stage Grid valve

Internal valves

Dr. Lutz Völker




Enhanced PlatformExhaust Constructions

Extended range of exhausts allows larger condensing stages and higher back-pressures

Radial and axial exhaust casings for condensing applicationsExhaust pressure up to 1.0 bar in combination with air- or water-cooled condensersLast stage blade sizes up to 8.7 m² (fixed speed) respectively 4.5 m² (geared or mechanical drives)Various possibilities for bleeds

Dr. Lutz Völker




Enhanced PlatformDesign Philosophy and Criteria

Applying State-of-the-Art design philosophies and tools to ensure best technical solutions and reliability

Design of steam turbine components according to expected life time and service load combinationDesign and operation of the steam turbine according to total exhaustionConsideration of both

Steady state operationNon-steady state operation

Dr. Lutz Völker




Enhanced PlatformTest & Verification

Extended test and verification using a real steam

Full load test using a 10 MW power back-pressure extraction turbineInvestigation of

Dynamic Blading behaviorPerformance measurement and validation of the loss modelControlling behavior using the butterfly inlet

Steam Turbine Key DataOut power: 10 MWLive steam conditions: 70 bara / 476 ºCOperational speed: 9000 rpmLoad control: water friction brake

Dr. Lutz Völker




Enhanced PlatformImproved CO2 Footprint

Optimized material application and improved performance lead toa CO2 emission reduction ofup to 15% over life time

Long-term experiences in material behavior lead to efficient material inventory for all components and result in a total turbine weight reduction Applying pre-standardized components leads to reductions in both engineering and manufacturing effortLess total weight leads to benefits for both packaging and logistic

Enhanced PlatformBuilding Block(SBB)

[tC

O2eq

]

Dr. Lutz Völker




Enhanced PlatformConclusion

OptimierteEffizienz

Higher live steam parameter

Long life cycle – increased life time

Improved flexibility for optimized customer solutions

Best technology features under common umbrella

Extensive tested and verified first turbine

Improved efficiency (up to 2 %)

Improved design for reduced start-up times

Improved CO2 footprint (15 % reduction of CO2 emissions)

Dr. Lutz Völker




Enhanced Platform

Dr. L. Völker / K. Riebisch




Thank you for your attention!

Documents

Dr. Lutz Völker / Katja Riebisch - Siemens AG ...m.energy.siemens.com/us/pool/hq/energy-topics/publications... · Dr. Lutz Völker © Siemens AG 2014 All rights reserved. Page 2