Voith Turbo - Basics

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Fttinger Principlehydro-dynamiquecouplingMotorTurbinePumpOperatingPrinciple of the Voith Turbo Coupling

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Oil flowOil flowTurbine wheelPump impellerFttinger Principle

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Variable Speed Couplingssvtl.exeThe fill level of operating fluid can be varied during operation between full and drained, thus enabling step-less speed control

Benefits-Proven design-Low capital costs-Unsensitive toenvironmental conditions-Almost maintenance freeAnimation scoop tube

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Variable Speed Coupling TypesSVNSVTWSVNkSVL ModularSVNLGMDCSVTLSVNL

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SVTL

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Variable Speed Coupling Type SVTLSelfsupporting design of tunnel construction

Compact design Economic solution

Field of application: -Combined cycle power station-Marine technology- Iron and steel industry-Raw material technology-Chemical and petro-chemicalindustry-District heating plants-Power stations

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Variable Speed Coupling Type SVTLSimplified longi-tudinal section

1Pump wheel2Turbine wheel3Shell4Scoop tubehousing5Oil sump6Oil circulationpump7Scoop tube8Working oilcooler65123478

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Variable Speed Coupling Type SVTLPerformancecharacteristicsvariable-speedturbo couplingtype SVTL

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SVNL

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Variable Speed Coupling Type SVNLBall and roller bearings -Heavy duty design-High power rating-Easy access through horizontally split housing

Field of application:-Iron and steel industry-Raw material technology-Chemical and petro-chemical industries-District heating plants-Power stations

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Variable Speed Coupling Type SVNLSimplified longi-tudinal section

1Pump wheel2Turbine wheel3Shell4Scoop tubehousing5Oil sump6Oil circulationpump7Scoop tube8Working oilcooler16524837

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Variable Speed Coupling Type SVNLPerformancecharacteristicsvariable-speedturbo couplingtype SVNL

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SVNLG

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Variable Speed Coupling Type SVNLG

Friction bearings. Housing horizontally split

-Almost no wear-Higher power rating-Load free start-External lube oil supply

Field of application:-Marine technology-Chemical and petro-chemical industries-District heating plants-Power stations

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Variable Speed Coupling Type SVNLGSimplified longi-tudinal section

1Pump wheel2Turbine wheel3Shell4Scoop tubehousing5Oil sump6Oil circulationpump7Scoop tube8Working oilcooler61582374

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PPump ImpellerTTurbine WheelSScoop Chamber1Input2Output3Oil Tank4Scoop Tube Housing5Scoop Tube6Filling Pump7Primary Shaft8Secondary Shaft9Relative Bearing10Collar End Bearing11Sleeve Bearing12Oil Cooler13Double Filter14Auxiliary Lube Oil PumpVariable Speed Coupling Type SVNLG

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Variable Speed Coupling Type SVNLGPerformancecharacteristicsvariable-speedturbo couplingtype SVNLG

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Operating rangesof adjustablecouplings

1Rising torque2Constanttorque3Decreasingtorque4Parabolic torque5DecreasingtorqueI, IVStarting rangeIIControl rangeIIIOverload rangeHydrodynamic Couplings

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Position controlcircuit

Components:-Position controller-Actuator forcontinuouscontrol-Positionfeedbackdrivenmachinemotorposition controllerscoop tube adjustmentactualvalueset value4-20 mAactual scoop tube setting value4-20 mAIntegration of the Variable Speed Coupling into a control circuit

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Process controlcircuit

Components:-Position controller-Process controllerdrivenmachinemotorposition controlleractual scoop tube setting valueset valueactual valueprocess controlleractualvaluepole wheelwith pick-upspeedmeasurementsconverterspeedindicatorset value 4-20 mAactual process valuenominal value 4-20 mAIntegration of the Variable Speed Coupling into a control circuit

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Geared Variable Speed Couplings

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Geared Variable Speed CouplingsPrinciple

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Geared Variable Speed Coupling TypesR...GSR...KGSR...BR...ARK Modular

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Geared Variable Speed CouplingsFor stepless speed control of various driven machines upto highest powers:

Units:over 4 000Power:up to 18 202 kWSpeed:up to 14 822 rpm

Applications:Compressors, Boiler feed pumps, Pipeline pumps, Injectionpumps, etc.

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Geared Variable Speed CouplingsWorking Principle1Gear stage2Hydrodynamic variable speedcoupling3Scoop tube4Electro-hydraulic positioning control(VEHS)5Working oil cooler6Lube oil cooler7Main lube oil pump8Oil circulation control valve9Working oil pump10Auxiliary lube oil pump11Duplex filter12Oil reservoir123411678910125

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GearboxDouble helical gearing with large tooth width in order to reduce gear center distances. Gears are designed as single-piece forging. The pinion is integral with the shaft and the gear wheel shrink fitted.

CouplingRunners made from high alloy steels for highest circumferential speeds.

Scoop tubeScoop tube operated by an electro-hydraulic actuator (VEHS) or Pneumatic or Electrical

Oil circuitSeparate oil circuits with coolers for working oil and lube oil. Closedworking oil circuit with mechanically operated oil flow control valve

PumpsMechanically driven working oil and lube oil pump. Electrically driven AOPA Proven PrincipleNumerous Improvements

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A Proven Principle Numerous ImprovementsClear advantages Higher technical flexibility Optimum adaptations a result of the different possible combinations between gearbox and coupling Compact design Short delivery Time due to standardized modules Compact actuator with integrated positioner for direct control (4 - 20 mA) Integrated rapid startup device Easier maintenance as a result of modular design

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Geared Variable Speed CouplingAdvantagesPower savings andextension of drivenmachine life comparedto throttle control:lower operating costsRobust and compactdesignRelieved motor start-upand smooth accelerationof heaviest massesLong service lifePrecise load adaptationof driven machines dueto the high controlaccuracy and fastreaction timesReliability > 99,9%(Evaluation based onunits in operation)Vibration dampingEasy maintenance,low maintenance costs

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Geared Variable Speed Couplings Type RKGS

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Geared Variable Speed Coupling Type R..KGS1Gear2Variable-speedturbo coupling3Oil pump4Scoop tube(adjustable)12341

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Geared Variable Speed CouplingType R..KGSA step up gear islocated both at theinput and outputside

High power at high speed

For particularly highoutput speeds, e.g. compressors

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Power Applications

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Fluid Couplings in a Thermal Power Plant

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Features and Benefits- Power savings and extension of driven machine life compared to throttle control

-Precise load adaptation of driven machines

-Highest reliability

-Vibration damping

-Relieved motor start-up and smooth acceleration of heaviest masses

-Robust and compact design

-Easy maintenance, low maintenance costs

-Long service life

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Main Boiler Feed Pump

2 x 21990 kW (Overload)4904 rpm

Scholven Power Plant

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Power ApplicationsBoiler feed pumpCoal-fired power plant Germany

Variable speed coupling

Type:SVTLPower:1250 kWSpeed:2950 rpm

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Fan drive Korea

Variable speed turbo coupling

Type:750 SVTL 21.2-6,3Power Applications

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Power ApplicationsBoiler feed pumpCombined cycle Power plantUSA

Variable speed coupling

Type SVNL 33.2

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Power ApplicationsBoiler feed pumpCombined Cycle Power PlantUSA

Variable Speed Coupling

Type SVNL 33.2

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Cogen South P.S.I.D Fan drive

Voith Variable Speed coupling

Type:1000 SVNL 21-18,5.3Power Applications

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Power ApplicationsBoiler feed pumpPower station Mexico

Geared variable speed coupling

Type: R15K400 MPower:2360 kWSpeed:6184 rpm

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Boiler feed pump Germany

Geared variable speed coupling

Type:R14 K 400 M invertPower: 387 kWInput Speed: 1491 rpmOutput Speed: 4069 rpmPower Applications

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Power ApplicationsBoiler feed pumpGermany

Geared variable speed coupling

Type: R19 KGSPower:9860 kWSpeed:4860 rpm

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4. FansType:SVTLUnits:1

Application :Boiler fan / ID fan

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5. Coal MillsType:R...AUnits:1Power:1100 KWSpeed: 500 rpm

Application:Coal millGreece

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Sucess of Voith with Chinese EPC companies for Indian Projects All the projects which are bieng set up by Chinese EPC companies in India are equipped with Voith couplings for BFP drives.Most of the I.D.Fan drives are equipped with Voith couplings. Some of the references of projects WBPDCL Sagardighi ( 2X300MW) BFP + ID FansDPL - Durgapur (1X300 MW) BFP + ID FansHPGCL Yamunanagar (2 X 300 MW) - BFPJSW Bellary ( 3X300 MW) BFP + ID FansJSW Ratnagiri (4 X 300 MW) BFP + ID FansKSK MPPL ( 1X 135 MW)- BFPVedanta Jharsuguda ( 8 X135 MW), BFP + ID Fans Vedabta Jharsuguda (6X600 MW) - BFP

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Sucess of Voith with Chinese EPC companies for Indian ProjectsLANCO- Amarkantak ( 2X300MW) BFP LANCO- Anpara C ( 2X600MW) BFP LANCO- Nagarjuna ( 2X600MW) BFP Adani - Tunda (2X300 MW) BFP JSW Barmer (8X 135 MW) - BFPJSPL Angul & Raigarh ( 10X135 MW) BFP + ID Fans ( under discussion )KSK WPPL (4 X 135 MW) BFP + ID Fans ( under discussion )Reliance - Rosa ( 2X 300 MW)- BFP + ID Fan ( Under discussion )Essar Mahan ( 2 X 600 MW), BFP etc.

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