Product Overview Canned Motor Pumps2 MB

Canned Motor Pumps
NON-SEAL
Canned Motor Pumps
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 personnel and the environment.
NON-SEAL
More advantages of the canned motor pump:
• Reduced installation costs; alignment of motor and pump is
not necessary
• Very low noise emission and low vibration
• Reduced space requirement due to compact block design
• Inverter operation (30 – 60 Hz)
• Low number of wearing parts; low maintenance requirements
• High reliability
• Low life cycle cost
Nikkiso-KSB pumps are used for aggressive, inflammable,
explosive, toxic or valuable liquids and liquefied gases. ATEX
and API 685 are available for chemical and petrochemical
applications.
1
7
4
2
3
6
5
1 E-Monitor – Monitoring of the rotor position for condition based maintenance
2 Secondary Containment – Integrated double safety with option for monitoring
3 Slide bearings in combination with automatic axial thrust balancing system – Long bearing life due to minimised loads
4 Flanges – According to DIN EN, ASME or JIS
5 Insulation classes C 220 and C 450 – Liquid temperatures up to 180 °C / 350 °C without cooling
6 Containment Can – Made from HC-N (2.4819) material for low eddy current losses and high corrosion resistance
7 Liquid temperature – Monitoring with internal PT 100 or external monitoring upon customers request
Canned Motor Pumps
Bearing Modular System
Nikkiso-KSB bearings are slide bearings which are lubricated by the process liquid. The modular system of Graphite and Graphite-SIC bearings has been designed for the
enhanced requirements of chemical and petrochemical
industries.
NON-SEAL
Sleeve (Tungsten Carbide Coated)
Bearing (Carbon Graphite)
Silicon Carbide Lining
Graphite bearings are combined with hard chromium coated
shaft sleeves and thrust washers. These bearings are the
perfect solution for liquids without solids.
Shaft
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 bearings 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 mechanical shock and chipping compared with SIC. Embedded
graphite particles provide emergency lubrication. These
bearings fulfil the high requirements of API 685.
Thrust Washer
(Tungsten Carbide Coated)
Composition
SiC (white) / Graphite (black)
SiC-Layer
Graphite 4-8 mm
E-Monitor
The 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 equipment and even force a plant shutdown. The EMonitor by Nikkiso-KSB is a supportive tool for
service personnel to perform condition-based maintenance.
Stator
Bearing
Shaft
Rotor
Probe
Bearing
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
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 measurements 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 operation as soon as the pump has been commissioned.
Canned Motor Pumps
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
HT
Hot chemicals, heat transfer medium, heat transfer units
according to DIN 4754
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
NON-SEAL
Canned Motor Pumps
Slurry containing liquids
Type
Liquid where small amount of solid particles can occur
Inline filter at discharge nozzle
Liquids with solid particles or liquids which tend to
polymerisation
HM/HS
The motor is reliably protected from contamination.
Liquefied gases
Type
Liquefied gases, liquid with steep vapour pressure curve
or high vapour pressure
HQ
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.
HR/BR
High head
Type
Liquids and liquefied gas with heads up to 600 m at 60 Hz
Multistage
X...
Tandem hydraulic
HK
Capacities up to 12 m³/h and head up to 300 m
Inverter operation up to 140 Hz
NON-SEAL
Canned Motor Pumps
NON-SEAL
Head-Capacity Envelope
Envelope 50 Hz
m
ft
2000
500
400
300
X42
X32
23G
4-pole
700
6-pole
500
23F
24F
100
70
Head
1000
X22
X12
25F
24E
23E
22E
26F
multistage
27F
23D
22D
25E
21C
1
5
10
20 30
23B
10
25B
30
100
200
42X
47D
48C
100
26C
46B
632
47B
70
631
50
46A
24A
20
50 70
25C
24B
23A
22A
10
26D
49C
48D
47C
24C
22B
21A
25D
23C
22C
21B
24D
300
48E
26E 27E
50
30
2-pole
30
461
50
1000
100 200 300
200 300
500 700 1000
2000 3000
m3/h
5000 7000 U.S.gpm
Capacity
Envelope 60 Hz
m
ft
2000
500
400
X32
X22
X12
300
23G
23F
22E
100
Head
70
21C
30
24D
24C
23B
24B
23A
22A
25D
27F
25C
27E
25B
24A
700
6-pole
47D
multistage
48D
300
49C
48C
200
26C
46B
4-pole
42X
48E
26D
1000
500
47C
23C
22B
21A
26F
25E
24E
23D
22C
21B
25F
26E
22D
50
24F
23E
632
47B
100
631
70
46A
50
461
30
10
1
5
10
20 30
10
50 70
20
100
30
2-pole
X42
1000
100 200 300
50
200 300
500 700 1000
Capacity
2000 3000
m3/h
5000 7000 U.S.gpm
Canned Motor Pumps
NON-SEAL
Examples 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
Vertical pumps for LNG
Pumps for liquid CO2
Basic type for chemical plant
Canned Motor Pumps
NON-SEAL
Nikkiso-KSB pumps meet:
• ATEX 94/9/EC
• EN 60079-0/1/7
• DIN EN 13463-1/5
• TIIS
• GOST, RTN
• Machinery Directive 2006/42/EC
• EMC Directive 2004/108/EC
• TA-Luft
• CE
Nikkiso-KSB pumps are available for:
• API 685
• DIN EN ISO 15783:2010-04
Nikkiso-KSB is certified to:
Nikkiso-KSB GmbH
Philipp-Reis-Strasse 13 ¦ D-63486 Bruchköbel ¦ Telephone +49 6181 300100 ¦ Fax: +49 6181 3001099
sales@nikkiso-ksb.com ¦ www.nikkiso-ksb.com
© Nikkiso-KSB GmbH - 2014-2012-05
• ISO 9001:2000
• GOST, RTN
• ATEX 94/9/EC