king cobra selection v2
TRANSCRIPT
8/2/2019 King Cobra Selection V2
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INTRODUCTION OF THE KING COBRA™
PERISTALIC HOSE PUMPS
Sizes Available:10mm (3/8”) through 102mm (4”)
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PRINCIPLE
• Pulsating flow is generated by the pushing action of shoes on the wall of theelastomeric hose.
• Shoes are assembled on a rotating wheel.
• The rotating action of the wheel compresses the elastomeric hose and pushesthe fluid being pumped downsteam.
• Frictions between shoes and hose are reduced by using a lubricant which alsoacts as a coolant.
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KING COBRA ADVANTAGES
• Seal-less construction
• Self-priming pump with high suction lift up to 9m (29.5’) of water
• Dry-run capable
• Abrasive products• Excellent volumetric capacity (dosing)
• Particles up to 15% (compressible solids) or 25% (non-compressible solids) ofhose I.D.
• Reversible pump
• Ease of Maintenance
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HOSE PUMPS COMPETITORS
Allweiler Elro Ragazzini
Boyser Iwaki Verder
Bredel PCM-Delasco Watson-Marlow
Pondorf
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Hose Life Depends On...
• Differential Pressure
• Rotation Speed
• Hose Material• Natural Rubber (N): 6 ; EPDM (E): 3 ; Buna-N (B): 2
• Liquid Temperature
• Service (Intermittent/Continous)
• Correct Ext DN Rectifying
• Correct Shimming
HOSE
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• Not enough hose compression = Internal recirculation offluid, as well as, premature wear of the hose.
• Too much hose compression = Unnecessary brakepower, and Lower Hose Life
• 1mm extra shimming may increase hose compression by2 (4 to 8 tons)
CORRECT SHIMMING
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HOSE LIFE
Tests done on KC65 natural rubber hose on water @ 70°F on continuous duty
3985751029
2740
4100
5840
4210
3521
1321
2850
1562
952
1680
1195
710
215 Psi
175 Psi
130 Psi87 Psi
43 Psi
KING COBRA™ HOSE
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KING COBRA™
HOSE LIFE
• Bredel SPX40
• Hose NR Bredel
• 60 rpm
• 7.5 bar-100Psi
• Continuous Duty• Water @ 70°C
• Bredel Setting
• Bredel SPX40• Hose NR – “King Cobra” • 60 rpm• 7.5 bar-100Psi• Continuous duty• Water @ 70°C• King Cobra Setting
Bredel Pump w/ Bredel Hose Bredel Pump w/ King Cobra Hose
Improved life due to improved rectified hose and hose re-enforcement technology
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HOW TO SELECT
KING COBRA™ PUMPS
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PUMP SELECTION
INFORMATION REQUIRED
• Fluid Handled• Pumping Temperature• Capacity Required• Vacuum Requirements• Discharge Pressure
• Duty Cycle (Start-Stop / Continuous)• Viscosity (fluid behavior)• % Solids
• Maximum Particle Size• pH Level or chemical compatibility
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UNDERSTANDING KING COBRA™
PERFORMANCE CURVES
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PUMP SPEED
Pump speed is directly associated to vertical axis
Example : 40 rpm for 8m3/h (35 gpm)
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MOTOR POWER
Motor power curve for 5 bar
Motor power curve for 7.5 bar
Motor power curve for 10 bar
Motor power curve for 15 bar
Motor power canbe read on leftvertical axis
Example : for 40 rpm @ 5 bar (73 psi), motor power needed = 4 kw for 40 rpm @ 15 bar (218 psi) then motor power needed = 6.5 kw
Motor power is found with the intersectionbetween vertical speed axis and motor powercurve according to pressure
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VISCOSITY LIMITS
Max viscosity allowed with vaccum assist
viscosity can beread on rightvertical axis
Max viscosity allowed without vaccum assist
Example : maximum viscosity allowed without vacuum assist at 30 rpm = 10,000 cps, max of 13,500 cps with vacuum assist
Maximum viscosity allowed is found with the intersection between vertical speedaxis and viscosity curve
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SERVICE
Intermittent Duty = pump is running less than 2 hours and stopped more than 1 hourContinuous Duty = pump is running more than 2 hours or stopped less than 1 hour
Dark Grey coloured =Intermittent service zone
Light Grey coloured =Continuous service zone
Example : at 50 rpm and below 7.5 bar (109 psi), pump can operate continuously above 7.5 bar a (109 psi), and 50 rpm, service must be intermittent
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TEMPERATURE LIMITS
Example : under 5 bar (73 psi), and intermittent service, pump is limited to :90 rpm under 40°C (104ºF) and 28 rpm under 70°C (158ºF) Under 15 bar (218 psi) and 70°C,pump is limited to 16 rpm
< 70°C
< 40°C Temperature limits
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KING COBRA™
SELECTION EXAMPLE
Operating conditions :
Fluid : Viscous Sludge
Fluid Tp° : 20°C (68ºF)
Viscosity : 5000 cps
Flow : 7 m3 /h (30.8 gpm)
Pressure : 10 bar (145 psi)
Service : Continuous
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1. PUMP SELECTION
According to the flowrate, only 3 pumps are suitable : KC40, KCX40, KC65
Fluid : viscous sludge
Fluid Tp° : 20°C (68ºF)
Viscosity : 5000 cps
Flow : 7 m3/h (30.8 gpm)
Pressure : 10 bar (145 PSI)
Service : continuous
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2. PUMP SELECTION
According to the pressure, those 3 pumps are suitable : KC40, KCX40, KC65
Fluid : viscous sludge
Fluid Tp° : 20°C (68ºF)
Viscosity : 5000 cps
Flow : 7 m3/h (30.8 gpm)
Pressure : 10 bar (145 PSI)
Service : continuous
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3. PUMP SELECTION
According to the service, only 1 pump is suitable : KC65
Fluid : viscous sludge
Fluid Tp° : 20°C (68ºF)
Viscosity : 5000 cps
Flow : 7 m3/h (30.8 gpm)
Pressure : 10 bar (145 PSI)
Service : continuous
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4. PUMP SELECTION
According to the viscosity, the KC65 is suitable
Fluid : viscous sludge
Fluid Tp° : 20°C (68ºF)
Viscosity : 5000 cps
Flow : 7 m3/h (30.8 gpm)
Pressure : 10 bar (145 PSI)
Service : continuous
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5. SPEED SELECTION
According to the performance curve, pump speed = 35 rpm
35 rpm
7 m3/h(.87 gpm)
Fluid : viscous sludge
Fluid Tp° : 20°C (68ºF)
Viscosity : 5000 cps
Flow : 7 m3/h (30.8 gpm)
Pressure : 10 bar (145 PSI)
Service : continuous
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6. POWER SELECTION
According to the performance curve, motor power = 4.6kW, you will need a 5.5 kW Motor.
35 rpm
4.6 kW
Fluid : viscous sludge
Fluid Tp° : 20°C (68ºF)
Viscosity : 5000 cps
Flow : 7 m3/h (30.8 gpm)
Pressure : 10 bar (145 PSI)
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