What's the advantage of increasing the impeller speed for centrifugal pumps?
If the speed is increased by 2000r/min by 1000r/min2000/1000=2The original traffic *2The original lift *4The original power *8According to the flow of 1 times, the pressure 2 times, power 3 times change
At the same time, according to the characteristic curve of centrifugal pump, it can be seen that the change of the speed changes the flow rate, the pressure head and the shaft power. Q1/Q2=n1/n2, H2/H1= (n2/n1) 2, N2/N1= (n2/n1) 2 (Q - flow H - effective pressure head N - shaft power n - speed)
For the power centrifugal pump, when the blade geometry size and flow rate are fixed, the theoretical pressure head of the centrifugal pump increases with the increase of the impeller speed or diameter, and then the theoretical pressure head includes the increase of potential energy and kinetic energy
