Date post: | 11-Sep-2015 |
Category: |
Documents |
Upload: | miroslava-campos |
View: | 2 times |
Download: | 0 times |
Latest Technologyfor Longer Pump Life
33 Model Sizes Flows to 26,000 GPM Heads to 410 feet Pressure to 232 PSIG
Large Process Pump Design
Total Cost of Ownership
Purchase
5%
Installation
24%
Operating
30%
Maintenance
41%
Purchase
5%
Installation
24%
Operating
30%
Maintenance
41%
20-Year Life Cycle CostsBased on 6000 hr/year
20-Year Life Cycle CostsBased on 6000 hr/year
Pump Reliability
Liquid end Seal chamber Power end Baseplate
33 pump sizes
Maximizes pump reliability
Coverage ensures efficient operation
Only 4 power frames
Hydraulic Coverage
Open impellers (standard) Solids, fiber & air applications Full back shroud for
mechanical integrity Balance holes for low
axial thrust Engineered back pump out
vanes for low bearing loads
Closed impellers (optional) Maximized efficiency Replaceable rings
Impeller Design
EXPANDINGVOLUTECASING
SEMICONCENTRICCASING
Pump Flow BestEfficiencyPoint
LowDeflection
HighDeflection
ExpandingVoluteCasing
SemiConcentricCasing
R
a
d
i
a
l
F
o
r
c
e
s
Casing Design
z Problem wear areas have always included the casing cutwater and wearplate surface.
z Computer solidification modeling allows extra thickness at crucial wear points for extended life.
Extra Thickness
Solidification Modeling
z Corrosion has less effect on large section components such as our impeller lock nut.
z Crevice corrosion is reduced through the use of o-rings at the critical fluid joints.
Corrosion Reliability
Attachment Requirements
Transmit torque
Prevent Leakage
Prevent loosening during reverse rotation
Threaded Acme Thread
Impeller Attachment Methods
Keyed
Goulds External Clearance Adjustment provides:
Precision fit between impeller and sideplate
Sideplate is clamped and sealed Performance reliability maintained Moving parts move in a sealed and
lubricated environment Proven in over one million
installations over 50 years
Maintain High Performance
Our Impeller back vanes are engineered in shape and height to be insensitive to impeller adjustments.
Common in recessed impeller pump designs
Proven on Test
1X 2X 3X
Performance Assured
S
t
u
f
f
i
n
g
B
o
x
P
r
e
s
s
u
r
e
Back Vane Clearance
O-ring moves over the corroded & fouled casing surface
Sideplate floats on studs- cocking in casing- studs can shear- not precise adjustment
Leakage past o-ring has leakage path through studs
Adjustment Direction
Sideplate Adjustment(Method used by another pump manufacturer)
Closed Impellerwith casing rings
Open Impellerfloating sideplate
Evolution of Sideplate Adjustment
Converting closed impellers to open was economically accomplished using adjustable sideplates.
The majority of pump downtime is due to mechanical
seal or packing failure.
Seal Chamber Design
Mechanical Seal Considerations
Seal Selection
Shaft Deflection
Seal Environment
Frame SPower end
Frame MPower end
Frame LPower end
Frame XLPower end
Goulds 3180 Competitor A
Group 3Power end
Group 4Power end
Group 5Power end
L3/D4 =44
L3/D4 =40
L3/D4 =25
L3/D4 =19
L3/D4 =41
L3/D4 =41
L3/D4 =17
Pump manufacturers frequently imply L3/D4ratios yield longer seal life.
Shaft deflection is a function of low L3/D4 and lower radial loads.
All reputable pump manufacturers have deflections under 0.002 in.
L3/D4 < 55 = Industry Target
Shaft Stiffness Deflection
EXPANDINGVOLUTECASING
SEMICONCENTRICCASING
Pump Flow BestEfficiencyPoint
LowDeflection
HighDeflection
ExpandingVoluteCasing
SemiConcentricCasing
R
a
d
i
a
l
F
o
r
c
e
s
Low radial load = low deflections
Shaft Deflection
Leading seal manufacturersreport that shaft deflection is NOT
the cause of seal failures!The problem is SEAL ENVIRONMENT!
Mechanical Seals
Seal Environment is Criticalfor Extended Seal Life
Seal Chambers Initially
Designed for Packing
Big Bore Seal Chamber Taper Bore Seal Chamber
(Introduced in the mid 1980s)
Evolution to Large Bore Seal Chambers to Extend Seal Life
Conventional taper bore seal chamber mechanical seals fail when vapor or solids are present
Modified tapered bore seal chamber with axial ribs good for services containing air, minimum solids
Goulds standard tapered bore plus seal chamber the best solution for services containing solids and air or vapors
Taper Bore Evolution
1) Solids/liquid mixture flowstoward seal chamber
2) Turbulent zone
3) Clean liquid flows towards seal
4) Low pressure zone createdby vane particle ejector
5) Seal faces flush with clean liquid
Taper Bore Plus How it Works
Engineered seal chamber with vane particle ejector
Goulds TaperBore Plus Patented: No.5,336,048
Research & Development
Zero Flush Water
The 3180 has a revolutionary seal chamber design guaranteedto operate on 6% OD stock without flush water!PATENTED!
Hard TungstenCarbide Seal Faces
Patented Vane Particle Ejector Springsnot in fluid
Why is zero flush important? Is the pump remotely located?
How reliable is the flush water? Plugging, Freezing, Lines shut off
How clean is the flush water?
What is the cost of flushing? Water treatment Product dilution
Flush Water Considerations
Cover
Back Plate
Repeller
Dynamic Seals
When Pump is OperatingDynamic Seal
Hydrodynamic Sealby Repeller PROVIDES
Air-PumpageInterface
Diaphragm Secondary Sealfor Dynamic Seal
SleeveFollower
Gland Diaphragm
Dynamic Seals Secondary SealingStuffing Box
z The 3180 includes a dynamic seal option design that seals the shaft on 6%OD stock without flush water! Unique grooves allow operation on recycled fibers. *patented
Zero Flush Water
12" S 14" S, MSpeed 1780 1470 1180 960 1780 1470 1180 960Repeller Diameter 8" 9.75"Max Suction Head (ft) 23 13 6 45 28 15 8(above atmospheric)Repeller BHP 1.1 0.61 0.3 2.4 1.3 0.7 0.4
Model 3180 Dynamic SealCapability Chart
Vacuum Services
Liquids at or near their boiling point
Highly viscous liquids
Liquids that crystallize when exposed to air
Liquids that become corrosive when exposed to air
Severe corrosives
Zero leakage applications
Dynamic Seal Application Limitations
Bearing design life Bearing environment Bearing temperature
Power ends
Bearing companies reveal that fatigue failure is extremely rare.Contamination and lack of lubrication are the major cause of failure, plus....
Bearing Size
Bea
ring
Life
Fatig
ue Li
fe
Bearing Life (Fatigue/Theoretical)
Non-optimized bearings will be susceptible to skidding, cage stresses and higher operating temperatures that lead to failure.
Pump Bearing Life(True Service Life)
Skidding
Measured on Test
Bearing Loads
Te
m
p
e
r
a
t
u
r
e
Bearing Size
The Right SizeKeeping the pumploads minimizedand selecting theright bearings willkeep temperaturesunder control.
Watch the Temperature
120F
140F
160F
180F
Model 3180Pumps operateat an averagetemperatureof 120 F
High
Typical
Low
Bearing Frame Oil Temperatures
Labyrinth oil seals are standard.
Carbon-filled Teflon is impervious to fluid corrosion.
Prevents lubricant contamination.
Oil Seals
Only the Goulds seal passed every test while competitive labyrinth seals failed.
Oil containment testLabyrinth sealing paths
Goulds Labyrinth Seal Torture Testing
Water exclusion test Dust exclusion test
Best in the Industry
Bearing design life >100,000 hrs
Bearing temperatures under 120F
Superior labyrinth oil seal design
Guaranteed like no other!
Power End Reliability
Fabricated baseplatedesigns with high torsional stiffness.
Machined surfaces 0.002 inch flatness.
Horizontal motor adjusters & vertical jacking screws
Engineered Baseplates
Model 3180
Additional Maintenanceand Reliability Features
Integral frame eliminates adapter and provides better seal access. Swing away lugs secure the seal chamber Casing bolts do not have to be removed Swing away lugs also act as jacking bolts
Ease of Maintenance
Monitoring sites for vibration and temperature are provided as standard for accurate and repeatable readings.
Monitor Sites
G2.5 impeller balance (routinely done!) Engineered shaft (alternating keyways) Keys and keyways engineered to eliminate voids Patented arbor designs ensure repeatability Technicians certified to ISO 9001 standards Vibration < 0.15 inches/sec
We Take Balancing Seriously
The Frame Support is a solid cast machined foot.
Alignment can be assured & maintained.
Rigid Support
No one in the industry offers the broad rangeof process pumps that Goulds does.....
Pick Your Perfect Process Pump
Model LF3196 Designed for Low Flow Services
Not all pumps aredesigned for low flows
LF3196 designed specifically for trouble-free operation at low flows
Off design operation range
Recommended operation range
T
O
T
A
L
D
Y
N
A
M
I
C
H
E
A
D
FLOWTYPICAL END SUCTION PUMP CURVE
System Curve Actual Throttled Operation
Rated Performance
T
O
T
A
L
D
Y
N
A
M
I
C
H
E
A
D
FLOWLF 3196 PUMP CURVE
System Curve Actual Throttled
Model LF3196 Designed for Low Flow Services
Goulds Model JC Designed for Handling aWide Range of Corrosive/Abrasive Slurries
Model 3298 Magnetic Drive Pump
Model 3298 Magnetic Drive Pump
Model 3298 Tefzel Construction for Extreme Corrosion Resistance
Capacity to 2400 tons/day
Model 3500 Medium Consistency Pump(to 16% Bone Dry)
Latest Technologyfor Longer Pump Life
33 Model Sizes Flows to 26,000 GPM Heads to 410 feet Pressure to 232 PSIG
Large Process Pump Design