Folleto de Sulzer PDF

MC High Pressure Stage Casing Pump
Sulzer Pumps
Sulzer Pumps is a leading global

supplier of reliable products and
innovative pumping solutions for
end users. Our active research
and development, detailed proc-
ess and application knowledge
together with a comprehensive
understanding of market demands
keeps us consistently at the lead-
ing edge of technical development.
Our global network of modern
manufacturing and packaging
facilities together with sales of-
fices, service centers and repre-
sentatives located close to major
markets provide fast responses to
customer needs.
Extensive Knowledge in Products and Processes
Sulzer Pumps has a long history Sulzer Pumps offers products for Providing technical expertise in a
of providing innovative pumping all types of power plants-nuclear broad spectrum of pumping ap-
solutions to business partners in reactor, fossil fired, geothermal, plications benefits our customers.
the following industries: combined cycle, large and small Engineering and implementing
• Oil & Gas industrial power plants. reliable, cost effective pumping so-
• Hydrocarbon Processing We offer boiler feed pumps for lutions to meet the demands of a
• Pulp & Paper subcritical and supercritical fossil continually evolving power genera-
• Power Generation fuel plants, cooling water pumps, tion industry is our focus.
• Food, Metals & Fertilizers condensate extraction pumps and
• Water & Wastewater pumps for auxiliary services. We have a successful track record
of improving our customers’ profit-
ability by setting new standards in
efficiency in reliability. Millions of
people around the world are
benefiting from a more reliable
power supply as a result.
Design
MC pumps are horizontal, radially

split ring section pumps of modu-
lar design. MC pumps are suit-
able for pumping clean or slightly
polluted, hot or cold, chemically
neutral or aggressive liquids.
The design is ideal for

• Boiler feed duties up to 180° C
• Condensate service in power
stations and industrial plants
• Desalination (Reverse Osmosis)
• Auxiliary services within com-
bined-cycle and industrial power
plants
Proven Technology
The MC pump is part of the

Ring Section Pumps
M-series of pumps including the
The M-series of pumps provides a modular and proven design for different
MBN, MD and ME and is primarily
designed for power applications, pressure ranges:
i. e. boiler feed and condensate MBN 80 bar, 1,160 psi
services in power stations, in- MC 180 bar, 2,600 psi
dustrial plants, desalination and MD 270 bar, 3,900 psi
combined-cycle power plants. ME 480 bar, 6,900 psi
M-series pumps are of a modular

design allowing Sulzer Pumps to
work with the customer to find the
most efficient solution. Investment
cost as well as life cycle cost are
taken into consideration when
designing the best possible pump.
An optimized hydraulic design
guarantees best efficiency.
MC Design Features and Benefits
O-rings
Casing sealing by confined
o-rings therefore unaffected by
rapid temperature variations and
high pressures.
Shaft Seal
Single or double mechanical seal may
be installed. Cooled or uncooled design
according to specifications available.
Axial Thrust Bearing

Designed for long life even under
extreme operating conditions.
Paired, fan-cooled taper roller
bearings are standard. Sleeve
bearing is available.
Heavy Bearing Housing

With automatic lubrication using
constant level oiler. Fan cooling
available.
Casing Support
Foot mounted is standard. Cen-
terline mounted is available for
large sizes or high temperatures.
Branch Size
Large branch optimizes inlet flow is
enabled by external positioning of the tie
bolts. Reduced noise levels through low
branch velocities. Higher forces and mo-
ments allowed.
Seal Housing
Can be cooled or uncooled
design; easy access to cool-
ing chamber; clearly arranged
connections; intensive, uniform
cooling.
Radial Bearing
Oil lubricated antifriction bearing
is standard; sleeve bearing also
available.
Shaft
Critical speed is higher than operat-
ing speed; small shaft deflection.
Areas subject to wear are protected.
Running speeds up to 4,000 rpm.
Impeller
In case of low NPSH available,
first stage double suction impel-
ler can be provided for selected
pump sizes.
Wear Rings
Maintain high efficiency during
pump life. Low maintenance cost,
high availability and short down
times. Impeller wear rings are
optional.
NDE Bearing Arrangement with Balance Drum
The balance drum device carries the major propor-
tion of the hydraulic thrust. The drum diameters are
chosen to minimize the thrust at normal operating
point. The residual and additional thrust loads occur-
ring above/below at the normal operating point are
carried by the thrust bearing, typically a taper roller
bearing.
The balance drum design is suitable for pumps that

operate at the end of the curve, up to 130 % of the
best efficiency point. The device nearly wear free and
therefore suitable for frequent stop start applications.
NDE Bearing Arrangement with Balance Disk

With a balance disk the axial force is completely
compensated, no axial thrust bearing is required.
Due to the smaller balancing leakage flow, total
efficiency of the pump is higher compared to the
balance drum design.
For pumps with frequent start-stop operation, the

installation of a Permavor® lift-off device is recom-
mended.
Permanent Magnetic lift-off Device Permavor®
The exclusive Permavor® lift-off device prevents

touching and wear of the disk/counter disk during
(1)
operation at low speed, such as start up and shut
down.
(3)
No eddy currents, no heat generation and me-
chanical contact during operation will occur.
Permavor® provides an extra thrust bearing for
operation at low speed without the requirement
for extra lubrication or cooling normally associ-
ated with mechanical lift-off designs. Due to the
contact-free operation, the service life is virtually
unlimited.
The Permavor® device is located at the non-driven

end of the bearing housing and shaft. The inner
(2) magnet carrier (2) and outer magnet carrier (1)
are equipped with permanent magnet rings (3).
The magnetic rings generate the axial lift-off force.
MC Performance Ranges
MC 50 Hz
MC 60 Hz
Operating Data
MC 50 Hz MC 60 Hz
Pump sizes 40 to 200 mm 1.5 to 8 inches
Capacities 20 to 800 m /h
3
80 to 4,000 USgpm
Heads up to 1,600 m up to 5,500 feet
Pressures up to 180 bar up to 2,600 psi
Temperatures up to 180° C up to 355° F
Check our worldwide offices at
www.sulzerpumps.com
E-mail power.pumps@sulzer.com
E10026 en 10.2008 (1,000), Copyright © Sulzer Pumps Ltd.

This brochure is a general presentation. It does not provide any warranty or guarantee of any kind. Please, contact us for a description of the warranties and guarantees offered with our
products. Directions for use and safety will be given separately. All information herein is subject to change without notice.

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MC High Pressure Stage Casing Pump

Sulzer Pumps is a leading global

Extensive Knowledge in Products and Processes

MC pumps are horizontal, radially

The design is ideal for

The MC pump is part of the

M-series pumps are of a modular

Axial Thrust Bearing

Heavy Bearing Housing

The balance drum design is suitable for pumps that

NDE Bearing Arrangement with Balance Disk

For pumps with frequent start-stop operation, the

Permanent Magnetic lift-off Device Permavor®

The exclusive Permavor® lift-off device prevents

The Permavor® device is located at the non-driven

E10026 en 10.2008 (1,000), Copyright © Sulzer Pumps Ltd.

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