Voith Turbo - Basics

Basics

Operating Principle of the Voith Turbo Coupling

hydrodynamique coupling

Motor

Pump    1    1      3    0      4    1    |   s   c    i   s   a    B    |    2

Turbine

Operating Principle of the Voith Turbo Coupling

hydrodynamique coupling

Motor

Pump    1    1      3    0      4    1    |   s   c    i   s   a    B    |    2

Turbine

Oil flow

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P u m p i m p e l l er er

Oil flow

Turbin e wh eel

Variable Speed Couplings The fill level of operating fluid can be varied during operation between „full“ and drained, thus enabling step-less speed control

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Benefits - Proven design - Low capital costs - Unsensitive to environmental conditions - Almost maintenance free

Animation scoop tube svtl.exe

Variable Speed Coupling Types

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SVTL

SVNL

SVTW

SVNLG

SVN

SVL Modular

SVNk

MDC

SVTL

Variable Speed Coupling Type SVTL Selfsupporting design of tunnel construction Compact design Economic solution

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

Variable Speed Coupling Type SVTL Simplified longitudinal section

1 2 3 4 5 6    1    1      3    0      4    1    |   s   c    i   s   a    B    |    8

7 8

Pump wheel Turbine wheel Shell Scoop tube housing Oil sump Oil circulation pump Scoop tube Working oil cooler

1 2 3

6 8 5

4 7

Variable Speed Coupling Type SVTL Performance characteristics variable-speed turbo coupling type SVTL

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SVNL

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

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

Variable Speed Coupling Type SVNL Simplified longitudinal section 1 2 3 4 5 6    1    1      3    0      4    1    |   s   c    i   s   a    B    |    2    1

7 8

Pump wheel Turbine wheel Shell Scoop tube housing Oil sump Oil circulation pump Scoop tube Working oil cooler

1 2

3

7

4

6 8

5

Variable Speed Coupling Type SVNL Performance characteristics variable-speed turbo coupling type SVNL

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SVNLG

Variable Speed Coupling Type SVNLG Friction bearings. Housing horizontally split -

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

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

Variable Speed Coupling Type SVNLG Simplified longitudinal section

1 2 3 4 5 6    1    1      3    0      4    1    |   s   c    i   s   a    B    |    6    1

7 8

Pump wheel Turbine wheel Shell Scoop tube housing Oil sump Oil circulation pump Scoop tube Working oil cooler

1 2

3

7

4

8

6

5

Variable Speed Coupling Type SVNLG

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P Pump Impeller T Turbine Wheel S Scoop Chamber 1 Input 2 Output 3 Oil Tank 4 Scoop Tube Housing 5 Scoop Tube 6 Filling Pump 7 Primary Shaft 8 Secondary Shaft 9 Relative Bearing 10 Collar End Bearing 11 Sleeve Bearing 12 Oil Cooler 13 Double Filter 14 Auxiliary Lube Oil Pump

Variable Speed Coupling Type SVNLG Performance characteristics variable-speed turbo coupling type SVNLG

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Operating ranges of adjustable couplings

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1 Rising torque 2 Constant torque 3 Decreasing torque 4 Parabolic torque 5 Decreasing torque

I, IV II III

Starting range Control range Overload range

Position control circuit Components: - Position controller - Actuator for continuous control - Position feedback    1    1      3    0      4    1    |   s   c    i   s   a    B    |    0    2

driven machine

motor

scoop tube adjustment

position controller set value 4-20 mA

actual value

actual scoop tube setting value 4-20 mA

pole wheel with pick-up

Process control circuit Components: - Position controller - Process controller

driven machine

motor

speed measurements converter

position controller set value

actual value

actual scoop tube setting value actual value

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process controller

set value 4-20 mA actual process value

speed indicator

nominal value 4-20 mA

Geared Variable Speed Couplings

Geared Variable Speed Couplings Principle

Motor

Start Animation

Gear box Variable Speed Coupling

Motor    1    1      3    0      4    1    |   s   c    i   s   a    B    |    3    2

Geared VariableSpeed Coupling

Driven Machine

Driven Machine

Geared Variable Speed Coupling Types

RK Modular

R...KGS

R...GS

R...A    1    1      3    0      4    1    |   s   c    i   s   a    B    |    4    2

R...B

Geared Variable Speed Couplings For stepless speed control of various driven machines up to highest powers: Units : over 4 000 Power : up to 18 202 kW Speed: up to 14 822 rpm

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

Geared Variable Speed Couplings Working Principle 1 2

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Gear stage Hydrodynamic variable speed coupling 3 Scoop tube 4 Electro-hydraulic positioning control (VEHS) 5 Working oil cooler 6 Lube oil cooler 7 Main lube oil pump 8 Oil circulation control valve 9 Working oil pump 10 Auxiliary lube oil pump 11 Duplex filter 12 Oil reservoir

11 6

10

7 1 12

9 2

8

5

3 4

A Proven Principle Numerous Improvements Gearbox Double 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. Coupling Runners made from high alloy steels for highest circumferential speeds. Scoop tube Scoop tube operated by an electro-hydraulic actuator (VEHS) or Pneumatic or Electrical

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Oil circuit Separate oil circuits with coolers for working oil and lube oil. Closed working oil circuit with mechanically operated oil flow control valve Pumps Mechanically driven working oil and lube oil pump. Electrically driven AOP

A Proven Principle Numerous Improvements

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Clear 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

Geared Variable Speed Coupling Advantages

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Power savings and extension of driven machine life compared to throttle control: lower operating costs

Relieved motor start-up and smooth acceleration of heaviest masses

Precise load adaptation of driven machines due to the high control accuracy and fast reaction times

Robust and compact design

Reliability > 99,9% (Evaluation based on units in operation)

Easy maintenance, low maintenance costs

Vibration damping

Long service life

Geared Variable Speed Couplings Type RKGS

Geared Variable Speed Coupling Type R..KGS 1 Gear 2 Variable-speed turbo coupling 3 Oil pump 4 Scoop tube (adjustable)

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1

3

1 2

4

Geared Variable Speed Coupling Type R..KGS  A step up gear is located both at the input and output side High power at high speed

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For particularly high output speeds, e.g. compressors

Power Applications

Fluid Couplings in a Thermal Power Plant

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Features and Benefits

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-

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

Scholven Power Plant Main Boiler Feed Pump 2 x 21990 kW (Overload) 4904 rpm

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Power Applications Boiler feed pump Coal-fired power plant Germany Variable speed coupling

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Type: SVTL Power: 1250 kW Speed: 2950 rpm

Power Applications Fan drive Korea Variable speed turbo coupling Type: 750 SVTL 21.2-6,3

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Power Applications Boiler feed pump Combined cycle Power plant USA Variable speed coupling Type SVNL 33.2    1    1      3    0      4    1    |   s   c    i   s   a    B    |    9    3

Power Applications Boiler feed pump Combined Cycle Power Plant USA Variable Speed Coupling

Type SVNL 33.2    1    1      3    0      4    1    |   s   c    i   s   a    B    |    0    4

Power Applications Cogen South P.S. I.D Fan drive Voith Variable Speed coupling Type: 1000 SVNL 2118,5.3    1    1      3    0      4    1    |   s   c    i   s   a    B    |    1    4

Power Applications Boiler feed pump Power station Mexico Geared variable speed coupling Type: R15K400 M Power: 2360 kW Speed: 6184 rpm    1    1      3    0      4    1    |   s   c    i   s   a    B    |    2    4

Power Applications Boiler feed pump Germany Geared variable speed coupling

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Type: R14 K 400 M invert Power: 387 kW Input Speed: 1491 rpm Output Speed: 4069 rpm

Power Applications Boiler feed pump Germany Geared variable speed coupling Type: R19 KGS Power: 9860 kW Speed: 4860 rpm    1    1      3    0      4    1    |   s   c    i   s   a    B    |    4    4

4. Fans Type: SVTL Units: 1

 Application : Boiler fan / ID fan

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5. Coal Mills Type: R...A Units: 1 Power: 1100 KW Speed: 500 rpm  Application: Coal mill Greece    1    1      3    0      4    1    |   s   c    i   s   a    B    |    6    4

Sucess of Voith with Chinese EPC companies for Indian Projects

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• 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 Fans •DPL - Durgapur (1X300 MW)  – BFP + ID Fans •HPGCL – Yamunanagar (2 X 300 MW) - BFP •JSW – Bellary ( 3X300 MW) – BFP + ID Fans •JSW – Ratnagiri (4 X 300 MW) – BFP + ID Fans •KSK – MPPL ( 1X 135 MW)- BFP •Vedanta – Jharsuguda ( 8 X135 MW), – BFP + ID Fans •Vedabta – Jharsuguda (6X600 MW) - BFP

Sucess of Voith with Chinese EPC companies for Indian Projects •LANCO- Amarkantak ( 2X300MW) – BFP • LANCO- Anpara C ( 2X600MW) – BFP

• LANCO- Nagarjuna ( 2X600MW) – BFP • Adani - Tunda (2X300 MW) – BFP •JSW – Barmer (8X 135 MW) - BFP •JSPL – Angul & Raigarh ( 10X135 MW) – BFP + ID Fans

( under discussion ) •KSK – WPPL (4 X 135 MW) – BFP + ID Fans

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•Reliance - Rosa ( 2X 300 MW)- BFP + ID Fan ( Under discussion ) •Essar  – Mahan ( 2 X 600 MW),  – BFP etc.