Regarding gear oil pumps
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The original pump has a flow rate of 45 m3/h and a rotation speed of over 900 revolutions per minute. If a motor with 1500 revolutions per minute is used, will the motor power need to increase in proportion? Is this feasible?
I work with screw pumps; by increasing the speed and the power of the motor, the flow rate increases accordingly
The lifespan of bearings and gears will be reduced, and they may even burn out
As long as the viscosity of the oil is not too high, it’s no problem for the motor’s power to increase accordingly and the speed to reach 1500 RPM; of course, the service life of bearings and other components will be reduced, but the motor certainly won’t get damaged as a result of the increased speed.
Gear pumps have strict requirements regarding speed, and their lifespan is reduced as a result
If you change the speed, the flow rate of your gear pump will increase, to around 63 m3/h. Moreover, the flow rate of a gear pump is controlled by its speed; increasing the speed will raise the power consumption of the motor. This in turn will affect the fatigue resistance of the bearings and gears in the gear pump, thereby impacting its service life. If the medium you are using has a high viscosity, an increase in rotational speed will generate additional heat, which in turn speeds up the flow of the medium. But using a motor of level 4 is fine; just ensure proper maintenance, and it will be okay. Still, I recommend using the original one with 970 rpm
With such a large increase in flow, does the pipeline need to be changed? Original inlet pipe 100, outlet 100
This post was last edited by svenzheng on 2016-8-13 at 15:21. The outer diameter of your DN100 pipe should be 108 mm. As the flow rate increases, the velocity of the fluid will also increase. Based on your previous data, and if my calculations are correct, the flow velocity is around 0.73 m/s. If you keep the flow velocity unchanged, you should use a pipe with a diameter of 180 mm; if the flow velocity rises to 1 m/s, use a pipe with a diameter of 159 mm; if it rises to 1.5 m/s, use a pipe with a diameter of 133 mm; and if it rises to 2 m/s, use a pipe with a diameter of 108 mm. For reference only; please give more points. It’s too stingy – I still want little flowers.
The speed and power can be adjusted; it depends on the properties of the medium being transported