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| CHEMICAL OR RBD OIL TRANSFER OR FEEDING PUMP SS 316 & SOLID CASTED APPORX 4 TO 5MM THK CASING |
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26.8.11
ROBUSCHI SOLID CASTED CHEMICAL PUMPS
Diesel Transfer & Flowmeter ( small unit , 56lpm )
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| PANTHER 56 (56 LITRES/MIN ) SINGLE PHASE 240 V .O.5 HP |
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| FLOWETER 3 OR 4 DIGIT |
22.7.11
ALFA LAVAL NEW VIRTUAL SHOWROOM
Dear All
Visit showroom at Alfalaval.com/showroom for range of products
Visit showroom at Alfalaval.com/showroom for range of products
12.7.11
Vacuum Pump - Not Able to Achieve Required Suction Pressure ( Vacuum )
KK
If the pump is not producing sufficient vacuum. the possiblities are
a) The pump is too small , but if you replacing other pump with the same rating ,then this should not be the problem
b) The flow of the the service liquid is too low , increased the flow of service water to twice the rated value
c) Temperature of service liquid is high ( not so likely in palm oil mill )
d) Air leakage in the system
e) Leakage in Mechanical seal
f) Internal Corrosion , but if new pump then this is unlikely
Checking your pump rating and confirm if is correct
If correct rating .focus on (b) to ( e )
Other mechanical fault , clearance between impeller and plate , or casing
If the pump is not producing sufficient vacuum. the possiblities are
a) The pump is too small , but if you replacing other pump with the same rating ,then this should not be the problem
b) The flow of the the service liquid is too low , increased the flow of service water to twice the rated value
c) Temperature of service liquid is high ( not so likely in palm oil mill )
d) Air leakage in the system
e) Leakage in Mechanical seal
f) Internal Corrosion , but if new pump then this is unlikely
Checking your pump rating and confirm if is correct
If correct rating .focus on (b) to ( e )
Other mechanical fault , clearance between impeller and plate , or casing
22.6.11
Energy / Power Cost in Pumps
Gone are the days of cheap power
Reducing Energy consumption is one of the major industry priority
To optimise new or existing installations . always compare pumping performance
to energy output . The variation can be as high as 50 %
Question : How much of the energy consumption do Pumps or Blowers represent in your
Plant ?
Generally , the total breakdown cost of a Pump During its operating life may be as follow
Investment of a Pump : 10 %
Maintenance Cost : 25 %
ENERGY COST : 65 %
Pump design should be focus on piping design and keep as low as possible the System Delivery Head
Unconventional installation may also be considered
We know of one Factory installing an End scution pump with the discharge of the casing facing downward
and lower BHP was recorded ,compared to the standard installation.
Reducing Energy consumption is one of the major industry priority
To optimise new or existing installations . always compare pumping performance
to energy output . The variation can be as high as 50 %
Question : How much of the energy consumption do Pumps or Blowers represent in your
Plant ?
Generally , the total breakdown cost of a Pump During its operating life may be as follow
Investment of a Pump : 10 %
Maintenance Cost : 25 %
ENERGY COST : 65 %
Pump design should be focus on piping design and keep as low as possible the System Delivery Head
Unconventional installation may also be considered
We know of one Factory installing an End scution pump with the discharge of the casing facing downward
and lower BHP was recorded ,compared to the standard installation.
21.6.11
17.6.11
27.5.11
netzch pump NM 031BY01 L06B ( stock )
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Model : NM 031 BY 01L06B
SS Body and Rotating Parts
Sator : SBBPF
Shaft sealing : Single shaft seal MG1
c/w Nord Geared Motor 1.5 kw at 197 rpm
capacity : 1.5 m3/hr at 3 bar
stock avaialable 28/5/2011
Also
Model : NM 045 BY 06 B
Cast Iron Body . SS Rotor /Nitrile Stator
c/w 4 kw Gaeared Motor 280 rpm
Capaicty : 10 m3/hr at 6 Bar
Model : NM 045 BY 06 B
Cast Iron Body . SS Rotor /Nitrile Stator
c/w 4 kw Gaeared Motor 280 rpm
Capaicty : 10 m3/hr at 6 Bar
Kiln Dryer ~thermal oil heating ~presure dropping as temperature increases
Site : BTenggrara
Pump Model : 65 x 40 -200
Duty : 25 m3/hr at 5 bar
Pump Speed : 2900 rpm
NPSH R : 2.0 Meter
Operating Pressure is 5 bar when temperature is below 150 C , but temperature at 180 C and above
pressure drops to 2 bar
Cuase :
as temperature increase . the oil vapour pressure increase, as mentioned by customer oil
seem boiling at expansion tank
The drop in pressure is due to pump cavitating .when the vapour pressure increase
the suction head or NPSH avialable is reduced to a very low level ,possible below the
NPSH required of the pump.Thus the pump is cavitating and cavitation reduces the flow seriously
Solution
a) increase suction head by raising the Inlet tank level
b) Increase suction line diameter ,to 100 mm from 65 mm ~this reduces the friction head
check suction strainer for blockage
c) upgrade pump , with pump operating on the left of the curve where the NPSH R is about 1 .0 Meter
The above rectification will help ,
Determine the Vapour pressure at 180 C . check with the Thermal Oil supplier and recalculate
the NPSH avaialable in the system
Pump Model : 65 x 40 -200
Duty : 25 m3/hr at 5 bar
Pump Speed : 2900 rpm
NPSH R : 2.0 Meter
Operating Pressure is 5 bar when temperature is below 150 C , but temperature at 180 C and above
pressure drops to 2 bar
Cuase :
as temperature increase . the oil vapour pressure increase, as mentioned by customer oil
seem boiling at expansion tank
The drop in pressure is due to pump cavitating .when the vapour pressure increase
the suction head or NPSH avialable is reduced to a very low level ,possible below the
NPSH required of the pump.Thus the pump is cavitating and cavitation reduces the flow seriously
Solution
a) increase suction head by raising the Inlet tank level
b) Increase suction line diameter ,to 100 mm from 65 mm ~this reduces the friction head
check suction strainer for blockage
c) upgrade pump , with pump operating on the left of the curve where the NPSH R is about 1 .0 Meter
The above rectification will help ,
Determine the Vapour pressure at 180 C . check with the Thermal Oil supplier and recalculate
the NPSH avaialable in the system
15.3.11
CAVITATION DAMAGED -IMPELLER
this is caused by serious cavitation
14.3.11
SUMP PUMP IN OPERATION .SOLID SIZE 20 MM AND SOLID CONTENT 20 %
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| Add caption |
Pump head is submerged and is without mechanical seal ,thus no worry about dry running or seal damaged
Motor is on top , bearing failure can be easily detected . In submerisble pump, by the time you
notice the bearing failure , it is already too late
Motor burnt , seal damaged and costly repairs are needed
This sump pump is with semo open impeller
that allow soild passage of 40 mm
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