213 e cr104 en variable-speed-fluid-couplings

8/10/2019 213 e Cr104 en Variable-speed-fluid-couplings

1/20Voith Turbo I Variable-Speed Turbo Couplings I cr 104 en

Variable-Speed Turbo Couplings


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Variable-Speed Drives

We are the experts in hydrodynamic variable-speed drives at Voith Turbo.

Voith Turbo, the specialist for hydrodynamic drive, coupling and braking systems for road,

rail and industrial applications, as well as for ship propulsion systems, is a Group Division

of Voith GmbH.

Voith sets standards in the markets energy, oil & gas, paper, raw materials and transporta-

tion & automotive. Founded in 1867, Voith employs almost 40 000 people, generates Euro

5.2 billion in sales, operates in about 50 countries around the world and is today one of thebiggest family-owned companies in Europe.


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Voith Variable-Speed Turbo Couplings

Developed for Reliability

Fields of applications, drives of:

Voith Turbo is the worldwide leading manufacturer of hydrodynamic

variable-speed drives. Continuous development keeps our products

at the latest state of technology.

Ongoing research, state-of-the-art test equipment and a compre-

hensive quality assurance system form the basis of the reliability

of Voith variable-speed couplings. Voith variable-speed turbo coup-

lings are renowned all over the world for numerous features and

customer benefits in the widest range of applications.

Power plants:

Fans

Pumps

Materials handling:

Slurry pumps

Belt conveyors

District heating plants:

Circulating pumps

Chemical industry:

Pumps

Fans

Mixers

Centrifuges

Oil & gas industry:

Pumps

Compressors

Metallurgical industry:

Blowers

Descaling pumps

Water industry:

Water supply and waste water

pumps

3Voith Turbo I Variable-Speed Turbo Couplings I cr 104 en




Unique Advantages Strong Benefits

Voith variable speed couplings are the optimum solution for a reli-

able operation of your plant.

They are renowned for numerous features and customer benefits.

Those are i.e. cost and energy saving, easy maintenance, long ser-

vice life. They alltogether result in a unmatched total cost of owner-

ship for the operator in a wide range of applications.

Customers all over the world count on the unique range of benefits:

Precise load adaptation of drivenmachines due to the high control

accuracy and fast reaction times.

Easy maintenance, low mainten-ance costs.

Long service life.

Wear-free transmission of powerthrough kinetic energy of a fluid.

Mechanical separation and thus pro-

tection of motor and driven machine

by dampening of torsional vibrations

and shock loads.

Low downtimes due to extremely

high reliability and availability.

4



Relieved motor start-up and smoothacceleration of heavy masses re-

sults in less stress and thus a longer

service life of the motor.

Compact and robust design. Energy savings, lower operationcost and extension of the life time

of the driven machine compared to

fixed speed.

Suitable for a wide variety of envi-

ronmental conditions (i.e. tropical

climates, desert, arctic and hazard-

ous areas).

Integrated lube oil system. Lube oil

supply to motor and driven machine.

Optimium total cost of ownership

compared to alternative drive

systems.

5



Simplified cross section

1 Pump wheel

2 Turbine wheel

3 Shell

4 Scoop tube housing

5 Oil sump

6 Oil circulation pump

7 Scoop tube

8 Working oil cooler

6

Function

Voith variable-speed turbo coup-

lings are fluid couplings, connectingthe prime mover in most cases an

electric motor with the driven ma-

chine. The coupling transmits the

power by means of the kinetic en-

ergy of the fluid, mostly oil. It circu-

lates in a closed working chamber

between the pump wheel, connect-

ed to the input shaft, and a turbine

wheel, connected to the output

shaft.

The filling grade of the operating

fluid can be varied during operation

between 0% and 100%, thus en-

abling exact and stepless speed

control of the driven machine. The

operating range depends on the

load characteristics (torque relative

to speed).

7

3

2

1

4

1 2 3 4 7

5

8

6


7/20Voith Turbo I Variable-Speed Turbo Couplings I cr 104 en 7


Torque Curves

Operating range

The performance diagram shows

the transmittable coupling

torques TKat different scoop

tube positions as a function of

the output speed. The desired

output speed is the result of a

stable intersection between

coupling torque TKand load

torque (load curve).

Torque curves of different driven machines against

variable-speed turbo coupling performance curves

Operating ranges:

I, IV Starting range

II Control range

III Overload range

The continuity of the curve is subject to

modifications, since minor deviations

of coupling size, circulation volume and

oil viscosity are possible.

125

100

75

50

25

050 100

sm

0 %

10 %

20 %

30 %

40 % 50 % 60 % 70 % 80 % 100 %

III

I

II

IV

1

2

3

4

TK

in%

Output speed in % of input speed

Typical load curves:

1 Constant torque

(e. g. positive displacement pumps,

and compressors)

2 Decreasing torque

(e. g. boiler feed pumps operating

at varying pressure)

3 Parabolic torque

(resistance parabola, pumps with-

out back pressure, fans)4 Decreasing torque

(e. g. boiler feed pumps

at fixed pressure operation)

Voith Turbo I Variable-Speed Turbo Couplings I cr 104 en

Parameters:

Scoop tube position in %

of the full scoop-tube stroke.

TK

Transmitted coupling torque

smin Minimum slip required

for torque transmission

s = (1 n

2

)

100 [%] n1

n1 Input speed

n2 Output speed


8/20Voith Turbo I Variable-Speed Turbo Couplings I cr 104 en8


Type SVTL

Coupling type SVTL has a self-sup-

porting design in a tunnel housing.

The rotating parts are supported in

the closed, oil-tight housing. Electric

motor and driven machine are con-

nected to the variable-speed turbo

coupling via connecting couplings.

The oil tank is integrated into the

housing, the oil pump is directly

driven by the input shaft. The shafts

are supported in antifriction bearings

which are lubricated by a mechan-

ically driven lube oil pump incorp-

orated in the variable-speed coup-

ling.

SVTL

5

8

9

10

7

4

5 61 2 3



1 With this design, oil tank extends into base,

dimension B is therefore exceeded

Size A B C Oil filling Weight

366-22 973 500 1 490 110 l 610 kg

422-22 973 500 1 490 110 l 630 kg

422-22-2,0 1 120 630 1 780 250 l 850 kg

487-21 973 500 1 490 110 l 570 kg

487-22 1 145 630 1 780 250 l 900 kg

487-12 1 255 800 1 780 500 l 1 200 kg

562-21 1 145 630 1 780 250 l 970 kg

562-12 1 255 800 1 780 500 l 1 260 kg

562-33 1 358 800 1 350 450 l 2 200 kg

562 HP 1 358 800 1 350 450 l 2 200 kg

650-21 1 310 750 2 000 300 l 1 200 kg

750-21-6,3 1 310 750 2 000 300 l 1 300 kg

750-22-12,8 1 469 725 1 400 400 l 1 750 kg 1

866-22-12,8 1 469 725 1 400 400 l 1 800 kg 1

Dimensions in mm

A

B

C

Simplified longitudinal

section

1 Pump wheel

2 Turbine wheel

3 Shell

4 Oil sump


6 Scoop tube

7 Filling pump

8 Oil cooler

9 Lube oil filter

10 Lube oil supply for

variable-speed turbo

coupling and other

machines

Variable-speed turbo coupling typeSVTL in a boiler feed pump drive

SVTL selection chart

5060

80100

200

300

400500

600

8001 000

2 000

3 000

4 0005 0007 000

400 500 600 750 1 000 1 200 1 500 1 800 3 000 3 600

Input speed n1in rpm

Inputpowerrating

P1

inkW

866-22

-12,8

750-21

-6,3

650-21

562-21

562-

12

487-21

487

-22

422-22

366-22

562-33

562-HP

422-22

-2,07

50-22-

12,8

562-33

HP

487-

12




Types SVNL, SVNLG

Coupling types SVNL and SVNLG

are of self-supporting design with a

horizontally split housing. The rotat-

ing parts are located in the com-

pletely closed, oil-tight housing.

Main motor and driven machine are

connected to the variable-speed

turbo coupling via connecting coup-

lings.

The oil tank is integrated into the

housing, a centrifugal oil pump (or,

with certain designs, a gear pump)

is used which is direct driven by the

input shaft.

With type SVNL, the main shafts

are supported by antifriction bear-

ings. The bearings are force lubri-

cated using pressurized oil.

With type SVNLG, the main shafts

are supported by sleeve bearings.

The bearings are force lubricated by

pressurized oil. For pre-lubrication

prior to start-up, an electric motor

driven auxiliary lubrication pump is

added.

1

8

5

6

47

11

2 3

8

56

7

1 2 3

4

Variable-speed turbo couplingtype SVNL in a circulation pump drive

SVNLGSVNL



Type SVNL


866-22-26 1 750 1 060 1 820 1 000 l 3 850 kg

1000-21-18,5 1 950 1 060 1 920 780 l 3 850 kg

1000-22-32 1 950 1 060 1 920 780 l 4 000 kg

1150-21-18,5 1 950 1 060 1 920 780 l 4 000 kg

1150-22-32 1 950 1 060 1 920 780 l 4 150 kg

1210-21-22,5 1 950 1 060 1 920 780 l 4 250 kg

1210-21-32 1 950 1 060 1 920 780 l 4 250 kg

1210 HP 1 950 1 060 1 920 780 l 4 250 kg

Type SVNLG


1330-12 3 150 800 2 400 1 500 l 12 000 kg

1330-21 3 150 800 2 400 1 500 l 10 000 kg

1390-21 3 150 800 2 400 1 500 l 11 000 kg

1540-21 3 150 800 2 400 1 500 l 12 000 kg

1780-21 3 780 900 2 900 3 000 l 16 200 kg

Other sizes upon request. Dimensions in mm.

A

B

C

SVNLG selection chart

5060

80100

200

300

400500600

8001 000

2 000

3 000

4 0005 0007 000

400 500 600 750 1 000 1 200 1 5001 800 3 000 3 600


Inputpowerrating

P1

inkW

1150-2

1-18

,5

1210

-21-32

1210

-HP

1210

-21-22

,5

1000

-21-1

8,5

1150

-22-32

1000

-22-32

866-22

-26

300

400

600

800

1 000

2 000

3 000

4 000

5 000

8 000

400 500 600 900 1 200 1 500 1 800 3 000 3 600


InputpowerratingP

1inkW

1780

-21-80

SVNL selection chart

6 000

10 000

1780

-12-

120

15

40-21-50

1540

-12-80

1330

-12-50

1150

-21-18,5

487-3356

2-33

620-3

3682

-33

750-2286

6-22

866-22

-26

1000

-22

1150

-22


section

1 Pump wheel

2 Turbine wheel

3 Shell


5 Oil sump


7 Scoop tube


1330

-12-80




Type SVL

Coupling type SVL has a self-

supporting design with high power

density. Input and output shafts are

supported separately in a cast iron

housing. Main motor and driven

machine are connected to the vari-

able-speed turbo coupling via con-

necting couplings.

1 2 3

4

8

10

7

9

56

11

The oil sump is flanged to the hous-

ing. The coupling has two oil circuits:

a working oil and a lubricating oil

circuit.

Both circuits are with mechanically

driven pumps. A flow control valve

adjusts the working oil flow to save

energy. The shafts are supported in

sleeve bearings which are force lu-

bricated using pressurized oil.

SVL M




section

1 Pump wheel

2 Turbine wheel

3 Shell

4 Coupling housing

5 Oil sump


7 Scoop tube

8 Flow control valve

9 Auxiliary lubricating

pump


11 Lube oil cooler

13

Variable-speed turbo coupling type 562 SVL in a crude oil / offshore pump drive

Variable-speed turbo coupling type SVL in a pipeline pump drive

SVL modular selection chart

1 000

30 000

1 000 2 000 7 000


Inputpowerrating

P1

inkW

682M

620M

562M

510M

3 000 4 000 5 000

10 000

5 000




Type SVTW

Variable-speed turbo coupling type

SVTW is operated with water in-

stead of mineral oil as operating

medium. It combines a new concept

with proven technology. The coup-

ling is directly flanged to the motor

which results in compact design

and easy installation.

The coupling type is available both

in horizontal and vertical design.

Variable-speed water coupling type SVTW horizontal

design, flanged to electric motor

Some applications are the drive of

pumps in irrigation systems, in mu-

nicipal water works and associated

waste water systems. The pumped

water can be used as operating

medium.

4 56

7

1

9

3

2

10

8

SVTWhorizontal



Electric motor (P = 600 kW, n = 990 rpm) with ver-tical water coupling type 866 SVTW as drive of a

drinking water pump in a German waterworks

Size A B C D Weight

562 577 170 747 850 700 kg

650 738 170 930 960 847 kg

750 816 170 1 040 1 120 1 267 kg

866 1 011 210 1 273 1 350 2 040 kg

1000 1 133 250 1 415 1 500 2 990 kg

1150 vert. 1 254 250 1 586 1 720 4 450 kg

1390 vert. 1 522 300 1 894 2 065 6 750 kg

Dimensions in mm

D

B

A

C

SVTW selection chart

4500

400 600 750 900 1800


InputpowerratingP1

inkW

1390

vert.

3500

2500

1500

1000

500

1200 1500

115

0ve

rt.

1000

866

750

650

562

100


section

1 Motor shaft

2 Coupling housing

3 Pump wheel

4 Turbine wheel

5 Shell

6 Scoop tube

7 Output shaft

8 Water supply line

9 Water return line

10 Scoop tube linkage




Types SVNL vert., SVNK vert.

Coupling type SVNL vert. is self-

supported and has a vertical de-

sign. The rotating parts are fully

supported in the housing.

Coupling type SVNK vert. is partly

self-supported and has also been

designed for vertical applications.

The coupling is supported by the

main motor shaft on the input side;

on the output side, a bearing has

been incorporated into the scoop

tube housing.

The housing of both types can be

adapted to the flange of the driven

machine. The oil supply is ensured

by a separate oil supply system.

Depending on the size, designs with

both antifriction and sleeve bearings

are available.

1

2

3

4

7

56

1

2

3

4

7

56

88

SVNK vert.SVNL vert.



SVNL vert. selection chart

200

5 000

400 600 4 000


InputpowerratingP1

inkW

1150-2

2

4 000

3 000

2 000

1 000

500

300

2 000 3 000

17

Variable-speed turbo coupling type SVNL vert.in a waste water pump drive

Size A B Cmin1

487 945 775 680

562 1 250 1 030 790

650 1 250 1 030 890

750 1 614 1 305 1 050

866 1 614 1 305 1 180

1000 2 046 1 656 1 360

1150 2 046 1 656 1 560

SVNL vert. dimensions in mm.1 Customized to suit motor or driven machine.

SVNK vert. dimensions upon request.

800 1 200

1000

-22

866-22

750

650

562

487

366

316

C

B

A


section

1 Pump wheel

2 Turbine wheel

3 Shell


5 Oil sump


7 Scoop tube




Integration of Voith Variable-Speed Turbo Coupling

into a Control Circuit

Position control circuit

Components:

Scoop tube actuator including position controller for

continuous control operation

Process control circuit

Components:

Process controller

Scoop tube actuator including position control for

continuous control operation

If the speed is to be used as a process value or if it is to

be displayed or to be incorporated, a speed measuring

device is provided.

Similar to the speed, a process value (e. g. pressure,

flow, etc.) can be incorporated into a control circuit.

Then this process value is used as set value.

Variable-speed turbo couplings serve to control the speed of

driven machines. In many cases, the couplings are integrated

into an automatic process.

Position control circuit Process control circuit

MotorDriven

machineMotor

Driven

machine

Scoop tube

position controller

Actuator Actuator

Actual value scoop

tube position

4 20 mA

Set value

scoop tube position

4 20 mA

Actual value scoop

tube position

Set value scoop

tube position

Actual process

value

4 20 mA

Set process

value

4 20 mA

Speed

indicator

Process controller

Speed

measurement

device

Scoop tube

position controller

Pole wheel

with pick-up

8



Technical Information for

Voith Variable-Speed Coupling Selection

19

Please complete the following questionnaire as detailed as pos-

sible, in order for a detailed design of a Voith Variable-Speed

Coupling to be achieved.

Driven machine (power consumer)

Contact

Name, company

Phone, fax / e-mail

Required information

Customer

Location (city, country)

Driven machine (Application; e.g. boiler feed pump)

Quantity

Torque characteristic parabolic constant

Maximum power consumption P2of driven machine kW

Motor speed n1 rpm

Maximum speed n2

of driven machine rpm

Required regulating range from % to100 %

Arrangement parabolic constant

Additional information

End user

Engineering company

Motor power P1

Cooling water available

yes Water temperature: C

no Ambient temperature: min. C

(for air-oil-cooler selection) max. C

fresh demineralized sea water

Installation indoor outdoor

Area classification (in case of hazardous area)

External lube oil supply requirements (motor and driven machine)yes Oil flow: l / min

no

Shaft diameter: mm Shaft length: mm

Specification, special requirements

Please send the filled-in form by fax (+49 7951 32-650) or by e-mail ([email protected])to the Voith Variable-Speed Dr ives team. We will get in contact with you shortly. Thank you.


20/20

cr104en,aik-S&F/CM,

12.2

010,

2000.

Dimensionsan

dillustrationswithoutobligation.

Subjecttomodifications.

Voith Turbo GmbH & Co. KG

Variable-Speed Drives

Voithstr. 1

74564 Crailsheim, Germany

Tel. +49 7951 32-261

Fax +49 7951 32-650

[email protected]/variable-speed

213 e cr104 en variable-speed-fluid-couplings

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