FLOWSERVE CORPORATION GA / GR / Gearex Pumps Gear... · Sliding Vane. How an External Gear Pump...
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Transcript of FLOWSERVE CORPORATION GA / GR / Gearex Pumps Gear... · Sliding Vane. How an External Gear Pump...
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FLOWSERVE CORPORATION
GA / GR / Gearex Pumps
Rotary Gear PumpsProduct Training Program
April 2017
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The Major Pump Groups
10
100
1,000
10,000
100,000
1,000,000
Rotary Recip'g Centrifugal
Visc
osity
Lim
it (S
SU)
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The Major Pump Groups
Centrifugal
ReciprocatingRotary
Positive Displacement
All PumpsAll Pumps
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Gear Pump Types
External gear typeInternal, "gear-within-a-gear" type
Gear Pumps
Rotary PumpsRotary Pumps
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Other PD Pump Types
Internal Gear
Screw
Lobe
Sliding Vane
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How an External Gear Pump Works
1. As the gears come out of mesh, they create expanding volume on the inlet side of the pump. Liquid flows into the cavity and is trapped by the gear teeth as they rotate.
2. Liquid travels around the interior of the casing in the pockets between the teeth and the casing (referred to as “locks”). It does not pass between the gears.
3. The meshing of the gears forces liquid through the outlet port under pressure.
The displacement is directly proportional with speed.
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Basic Features
• Gear pumps use close running clearances to seal suction from discharge pressure and provide increasing volumetric efficiency with increasing viscosity
– Flow constant over varying pressures– Flow directly proportional to speed– Power directly proportional to speed– Efficiency increases with velocity
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Head and Flow Curves - Theory
Capacity (GPM)
Hea
d (fe
et)
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PD vs Centrifugal Pumps – Actual Curves
PD Pump Centrifugal Pump
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Flowserve Offering
Engineered (API 676)2nd Ed. Compliant
GRHigher Flow/Head
GALower Flow/Head
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Pumping Gear Types
Quietest operation Gradual mesh Hydraulically balance
Spur Helical Herringbone
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GAX Series
• 7 sizes• Up to 120 GPM• Up to 25,000 SSU (5,500 CP)• Up to 1,800 RPM
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GAX Coverage
120 GPM
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GAX Series
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GAX Features
Sleeve Bearings
Mechanical Seal
Safety Relief Valve
Inboard Bearings(for belt drives)
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GAX Mounting Options
GAF GAS GAC
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GAX Ordering Code
1 G A S M 0 D 0
Basic Size Construction Code1, 2, 3, 4, 5, 6 or 7 0 - Standard constructionSee Section 2061-2 for GAS & GAF
1 - 56C frame (GAC only)Product Designation 2 - 143 / 145TC frame (GAC only)G - GAX Series gear pump 3 - 182 / 184TC frame (GAC only)
4 - 213 / 215TC frame (GAC only)Materials of ConstructionA - Cast iron Bearing Material
D - CarbonMounting Configuration B - Bronze (150 psi maximum)S - Foot mountedF - Flange mounted Relief Valve ConfigurationC - Close coupled (sizes 1 through 4) 0 - None provided
1 - Provided with 0-100 psi range. ForSealing Configuration higher ranges, see Section 2061-3P - Packing (not with GAC) pages 4, 8, or 14 for optional MMN'sM - Mechanical seal (Buna-N)I - Seal w/ inboard bearing (not with GAC)
1 G A S M 0 D 0
Basic Size Construction Code1, 2, 3, 4, 5, 6 or 7 0 - Standard constructionSee Section 2061-2 for GAS & GAF
1 - 56C frame (GAC only)Product Designation 2 - 143 / 145TC frame (GAC only)G - GAX Series gear pump 3 - 182 / 184TC frame (GAC only)
4 - 213 / 215TC frame (GAC only)Materials of ConstructionA - Cast iron Bearing Material
D - CarbonMounting Configuration B - Bronze (150 psi maximum)S - Foot mountedF - Flange mounted Relief Valve ConfigurationC - Close coupled (sizes 1 through 4) 0 - None provided
1 - Provided with 0-100 psi range. ForSealing Configuration higher ranges, see Section 2061-3P - Packing (not with GAC) pages 4, 8, or 14 for optional MMN'sM - Mechanical seal (Buna-N)I - Seal w/ inboard bearing (not with GAC)
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GR Series
• 16 sizes in CI or CS• Up to 1,100 GPM• Up to 500 PSI• Up to 1 Million SSU
(200,000 CP)• Up to 1,800 RPM and 650° F
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GR Coverage
1000 GPM
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GR Features
Jacketed Body(Hi-Temp)
Inboard Bearing(Belt Drive)
Insurok Wear Plate(<400SSU/75cp)
Dual Stuffing Box(Hi Suction Pressure)
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GR Features
• Bronze– Dirty Services– >100SSU– <350°F
• Babbitt Impregnated Carbon– <100SSU– <350° F
• Antimony Impregnated Carbon– Dirty Services: >350° F– All Services: >500° F
Sleeve Bearings
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GR Bearing Considerations• Roller Bearings: Standard Configurations
– Clean Viscous Liquid up to 500° F• Bronze Sleeve Bearings
– Dirty services above 100SSU/below 350° F• Babbitt Impregnated Carbon
– Clean services below 100SSU and below 350° F• Antimony Impregnated Carbon
– Dirty services above 350° F– All services above 500° F
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GR Sealing Consideration• Packed Box: Standard Configuration
– Limited to 300° F on standard packing• Standard Mechanical Seal: Type 1/51
– BCRKR: Limited to 240°F / 5,000SSU max– VCRKR: Limited to 300° F
• Inboard Bearing Configuration– Limited to 240° F max
• All Applications above 300° F– Refer to Factor / FSD
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GR Pressure Consideration• Cast Iron GR
– 10 psig suction below 75 SSU– 50 psig suction above 75 SSU
• Cast Steel GR– 50 psi suction above 200 SSU– NOT recommended below 200 SSU
• Insurok Wear Plates– 50 psig suction / 250° F limit
• Double Stuffing Box Configuration– 100 psi suction limit
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GAX/GR Selling Features
• Higher Speed Capability– 1800 RPM at lower
viscosities and smaller sizes
– Reduced need for gearboxes, couplings, and guards
– Higher system efficiency without gearbox
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GAX/GR Selling Features
• Back Pull-Out Design– Quick access– Undistributed system for
inspections– Ease of maintenance
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GAX/GR Concerns• Applications to Carefully Apply:
– Solidification: steam jacketing is a must– Low NPSHA: reduce speed to gain NPSHR– High Temperatures: review bearings/seals
• Applications to Avoid:– Low viscosity/Lubricity: <30SSU– Vertical Lift Applications: not self-primer– Solids handling– Shear sensitive liquids– Corrosive liquids
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Market
• GI Applications– Fluid circulation– Supply to burner and heater sets– Slop oil and waster transfer
• OEM Applications– Lube and seal oil supply– Filtering and metering systems– Proprietary equipment systems
• Oil Applications– Asphalt transfer– Heavy oil/grease transfer– Barge, train, tank, truck loading
• Chemical Applications– Highly viscous polymers– Cellulose acetate– Feedstocks
$200M+ market in North America annuallyOverwhelmingly distributor-driven
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GAX/GR Selection Process• Information Required:
– Viscosity (max and min)– Flow rate desired– Differential pressure desired (or max acceptable by system)– NPSH available
• Steps:1. Gear Pumps notsupported by Affinity.2. GAX and GR SelectionTools available on PumpNet(Distributor Portal)
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GAX/GR Selection Tool
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Gearex Pumps
• Flowserve to 800 gpm• Pressure up to 350 psi• Temps up to 850 deg F (450 deg C)• Viscosity 32 to 1 M SSU• Max Speed 1800rpm
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• Pump Nomenclature B, C, D, E – Each model has several rotor width options
• Max Displacement – B 74 usgpm @ 1800 rpm (Comparable with 2GR)– C 163 usgpm @ 1800 rpm (Comparable with 2.5GR)– D 254 usgpm @ 1200rpm (Between 3GR & 4GR)– E 812 usgpm @ 900 rpm (Between 5GR & 6 GR)
Gearex Pumps
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Gearex Pumps
Clean Product Lubrication Product Continuous Flow of
Product No Solids Non-Corrosive
Not so Clean Product Non Lubrication Product Intermittent Flow of
Product Solids Corrosive
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Gearex Pumps
Markets• Oil, Chemical, & Petrochemical
Refining• Marine Vessels & Storage Terminals • Power Generation• Non-sanitary Food Industry • OEM Application• General Fluid Transfer Applications.
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QUESTIONS?COMMENTS?