Axial force of axial flow pump
Thread Content
Is the axial force on the rotor of an axial flow pump in the direction of fluid flow or in the opposite direction? Why?
In the opposite direction, this is the principle of action and reaction. The impeller exerts a force on the medium, causing it to flow forward ； At the same time, the impeller experiences a reaction force from the medium in the direction opposite to the flow of the medium.
This depends on the structural design of the impeller and the pump; the criterion for judgment should be based on the structure of the impeller. The axial force of single-stage suction acts in the direction of the inlet, as the pressure acting on the area at the inlet is lower than the pressure acting on the corresponding area on the back side of the impeller. Also, in order to reduce the axial force generated, measures such as two-way suction and the use of balance discs are commonly adopted. (For reference)
In the opposite direction, this is the principle of action and reaction. The impeller exerts a force on the medium, causing it to flow forward ； At the same time, the impeller experiences a reaction force from the medium in the direction opposite to the flow of the medium.