Canned Motor Pumps

NON-SEAL

Canned Motor Pumps NON-SEAL

1

2

3

5

6

7

7

3

2

1

5

6

4

E-Monitor – Monitoring of the rotor position for condition based maintenance

Secondary Containment – Integrated double safety with option for monitoring

Slide bearings in combination with automatic axial thrust balancing system – Long bearing life due to minimised loads

Flanges – According to DIN EN, ASME or JIS

Insulation classes C 220 and C 450 – Liquid temperatures up to 180 °C / 350 °C without cooling

Containment Can – Made from HC-N (2.4819) material for low eddy current losses and high corrosion resistance

Liquid temperature – Monitoring with internal PT 100 or external monitoring upon customers request

Canned Motor Pumps are a combination of centrifugal pumps with 3-phase-induction motors. The impeller and rotor are installed on a single shaft. The stator liner, or so called “can”, separates the stator chamber from the wet rotor chamber. The design is without a shaft seal and therefore free of leakage. The pumping liquid cools and lubricates the slide bearings and the rotor chamber. The “heavy duty“ design pumps are designed for system pressures up to 40 bar. The secondary pressure containment, which is achieved by the stator shell, provides the highest safety level for per-sonnel and the environment.

More advantages of the canned motor pump: •Reduced installation costs; alignment of motor and pump is

not necessary •Verylownoiseemissionandlowvibration •Reducedspacerequirementduetocompactblockdesign •Inverteroperation(30–60Hz) •Lownumberofwearingparts;lowmaintenancerequire-

ments •Highreliability •Lowlifecyclecost

Nikkiso-KSB pumps are used for aggressive, inflammable, explosive, toxic or valuable liquids and liquefied gases. ATEX andAPI685areavailableforchemicalandpetrochemicalapplications.

4

Canned Motor Pumps NON-SEALSleeve (Tungsten Carbide Coated)

Bearing (Carbon Graphite)Silicon Carbide Lining

Thrust Washer(Tungsten Carbide Coated)

Shaft

unit can be integrated in a process control system via a “4 to 20 mA“ signal.

Added functions, such as a direction-of-rotation indicator, show whether the pump is running in the wrong direction which eliminates the need for phase rotation measure-ments during commissioning. As the E-Monitor is supplied with power from the motor terminal box there is no need for external cabling, thereby keeps costs to a minimum. The unit is supplied with the pump and is ready for opera-tion as soon as the pump has been commissioned.

Bearing Modular SystemNikkiso-KSB bearings are slide bearings which are lubri-cated by the process liquid. The modular system of Graph-ite and Graphite-SIC bearings has been designed for the enhanced requirements of chemical and petrochemical industries.

Graphite bearings are combined with hard chromium coated shaft sleeves and thrust washers. These bearings are the perfect solution for liquids without solids. Graphite-SIC bearings are used for special demands, like liquid gases which shall be pumped at a temperature very close to the evaporation point. The surface of these bear-ings is lined with a silicon carbide of approximate 4 mm thickness which is created by conversion of graphite using pure silicon. These bearings are less susceptible to me-chanical shock and chipping compared with SIC. Embedded graphite particles provide emergency lubrication. These bearingsfulfilthehighrequirementsofAPI685.

Graphite 4-8 mm

SiC-Layer

CompositionSiC (white) / Graphite (black)

Stator

Bearing BearingRotor

Shaft Probe

E-MonitorThe E-Monitor, specially developed for use on canned motors, monitors the axial and radial slide bearing status and indicates continuously any changes in the bearings’ condition.

Planned maintenance often involves untimely exchange of parts which have not yet reached their maximum service lifetime. It also involves unnecessary cost for dismantling the equipment. Reactive maintenance always involves the equipment being repaired when a breakdown has already occurred. In this case however, normal wear can lead to costly consequential damage of the equip-ment and even force a plant shutdown. The E-Monitor by Nikkiso-KSB is a supportive tool for service personnel to perform condition-based main-tenance.

The monitoring unit receives data from sensors embedded in the stator. These monitor the rotor position on the basis of the rotors magnetic field. As soon as the rotor moves away from its desired position the measuring probes will detect the change. After digital processing of the status change signals, the unit shows the operator the condition of the pump bearings on a “traffic light” display. The green LED indicates that everything is okay with the bearings. An amber LED warns the operator that the pump should be checked during the next regular plant shutdown. If the red LED lights up, the operator knows that the pump should be taken out of service and checked as soon as possible. The

Canned Motor Pumps NON-SEAL

Liquid temperatures up to 180 °C Type

For corrosive, inflammable, explosive, toxic or valuable liquids and liquefied gases for chemical and petrochemical applications

HN

Liquid with high melting points Type

Pumps with heating jackets HB/HC

In-line design Type

Space saving Inline pumps, removing the requirement for a concrete foundation

LN

Self priming pumps Type

E.g. for tank farms and vessel loading and unloading in chemical and petrochemical industries

DN

High temperature applications Type

Liquid temperatures up to 400 °C, cooled motor

Hot chemicals, heat transfer medium, heat transfer units according to DIN 4754

HT

Liquid temperatures up to 350 °C, ceramic winding without cooling

Hot chemicals, heat transfer medium, heat transfer units according to DIN 4754. Optional with heating jackets on the motor, casing and rear bearing housing

HX/HY

Canned Motor Pumps NON-SEAL

Slurry containing liquids Type

Liquid where small amount of solid particles can occur

Inlinefilteratdischargenozzle

Liquids with solid particles or liquids which tend to polymerisation

The motor is reliably protected from contamination.

HM/HS

Liquefied gases Type

Liquefied gases, liquid with steep vapour pressure curve or high vapour pressure

Reverse circulation line for safe heat transfer from rotor chamber to suction tank.

Additional benefit: The motor heat loss is not transferred into the process liquid discharge system.

HQ

HR/BR

High head Type

Liquidsandliquefiedgaswithheadsupto600mat60Hz Multi-stage X...

Tandem hydraulic

Capacities up to 12 m³/h and head up to 300 m

Inverteroperationupto140Hz

HK

Canned Motor Pumps NON-SEALHead-Capacity Envelope

Envelope 50 Hz

m

100

10

m3/h1000100105

30

50

70

300

400500

20 30 50 200 300

2-pole

1

10 2030 50 70 100 200 300 500 700 1000 2000 3000 5000 7000 U.S.gpm

500

300

200

100

70

50

30

700

ft2000

X12 X22

X32 X42

23F24F 25F 26F 27F

22E 23E 24E 25E26E 27E 48D

47D48C

47C

47B46B

46A

26D

26C25C

25D

24C

24D

24B25B

24A23A

23B

23C

23D

23G

22D

22C

22B

22A

48E

42X

49C

632

631

461

1000

21C

21B

21A

4-pole

6-pole

multistage

Capacity

Head

48E 42X

49C

632

631

461

m

100

10

m3/h1000100101

10 2030 50 70 100 200 300 500 700 1000 2000 3000 5000 7000 U.S.gpm

X12 X22

X32 X42

23F 24F 25F 26F 27F

22E 23E 24E 25E26E 27E 48D

47D48C

47C

47B46B

46A

26D

26C25C

25D

24C

24D

24B25B

24A23A

23B

23C

23D

23G

22D

22C

22B

22A

500

300

200

100

70

50

30

700

ft2000

1000

21C

21B

21A

2-pole

4-pole

6-pole

multistage

5

30

50

70

300

400500

20 30 50 200 300

Capacity

Head

Envelope 60 Hz

Canned Motor Pumps NON-SEALExamples of use

HN with E-Monitor Multistage for LPG

Heated pumps for high melting points Cooled high-temperature version

Self-priming pumps in a tank farm VerticalpumpsforLNG

Pumps for liquid CO2 Basic type for chemical plant

Canned Motor Pumps NON-SEAL

Nikkiso-KSB GmbHPhilipp-Reis-Strasse13¦D-63486Bruchköbel¦Telephone+496181300100¦Fax:+4961813001099sales@nikkiso-ksb.com ¦ www.nikkiso-ksb.com ©

Nik

kiso

-KSB

Gm

bH -

2014

-201

2-05

Nikkiso-KSB pumps meet: •ATEX94/9/EC •EN60079-0/1/7 •DINEN13463-1/5 •TIIS •GOST,RTN •MachineryDirective2006/42/EC •EMCDirective2004/108/EC •TA-Luft •CE

Nikkiso-KSB pumps are available for: •API685 •DINENISO15783:2010-04

Nikkiso-KSB is certified to: •ISO9001:2000 •GOST,RTN •ATEX94/9/EC