FK 40 - Tri-Canada

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Centrifugal pumps Multistage centrifugal pump FM Step 2: Find t he power consumpt ion of t he pump at t he point in t he diagramm where t he power curve meets the design flow rate. Select the motor with the next higher power rating. From the diagram: N = 6.7 kW, selected motor: 7.5 kW The selection is carried out the same way as single-stage centrifugal pumps FP are selected (See page 28).
Positive displacement pumps are hydrostatic machines. They operate with a positive transfer and should not work against a closed system. All rotary pumps are designed after the same principle. Two rotors are arranged on parallel shafts and driven by an external synchronous gear box. The rotors rotate in opposite directions to each other. Small radial and axial clearences assure that they have no contact with each other, or the pump body. The rotors are designed to form a barrier between the suction and pressure side of the pump in any position. The sealing is only maintained by narrow gaps. There are no additional seals or valves. The increasing cavity between the rotors on the suction side is filled with the product. The product is displaced in a circumferential direction and discharged on the pressure side as the cavity between the rotors is collapsing. This generates a constant flow from the suction to the discharge side of the pump. Suction and filling of t he upper chamber and simult aneous displacement of the product present in t he lower chamber Displacement of the product present in t he upper chamber and simultaneous suction and filling of t he lower chamber Discharge of t he product present in t he upper chamber and simult aneous displacement of the product present in t he lower chamber Displacement of the product present in t he upper chamber and simultaneous discharge of t he product present in the lower chamber Rotary pumps ensure a gentle fluid transfer with minimum stress or damage to the product. Positive displacement pumps Features and operating principle of a positive displacement pump Operating scheme
Page 2 and 3: Content Pump technology terms . . .
Page 4 and 5: Pump technology terms Flow rat e [m
Page 6 and 7: Pump technology terms Flow behaviou
Page 8 and 9: Pump technology terms Types of flow
Page 10 and 11: Pump technology terms NPSH value [m
Page 12 and 13: Loss of head calculation Loss of he
Page 14 and 15: Loss of head calculation Example: F
Page 16 and 17: Centrifugal pumps Feat ures of t he
Page 18 and 19: Centrifugal pumps Correction of the
Page 20 and 21: Centrifugal pumps Pumps connected i
Page 22 and 23: Centrifugal pumps Centrifugal pump
Page 24 and 25: Centrifugal pumps Centrifugal pump
Page 26 and 27: Centrifugal pumps Power consumption
Page 28 and 29: Centrifugal pumps Self- priming cen
Page 32 and 33: Positive displacement pumps Perform
Page 34 and 35: Positive displacement pumps Selecti
Page 36 and 37: Positive displacement pumps Case 1:
Page 46 and 47: Positive displacement pumps Rotary
Page 58 and 59: Mechanical seal selection Double me
Page 60 and 61: Mechanical seal selection “Face t
Page 62 and 63: Mechanical seal selection Elastomer
Page 64 and 65: Pump cleaning SIP After CIP cleanin
Page 66 and 67: Index Cavitation . . . . . . . . .

FK 40 - Tri-Canada

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