Causes and treatment of severe vibration during submersible pump operation

2020-05-27

The violent vibrations generated when the submersible pump is running are mainly related to the balance of the pump impeller and the motor rotor and mechanical reasons, including:

1. The impeller of the submersible pump is unbalanced
The treatment method is to re-statically balance the pump impeller.

2. The rotor of the submersible pump is unbalanced
The treatment method is to disassemble the submersible pump and recalibrate the rotor balance of the submersible pump.

3. The rotating shaft of the submersible pump is bent
The bending of the rotating shaft is a serious fault condition, which will cause the air gap of the submersible pump to be uneven, the bearing stress will deteriorate, and even the stator and rotor of the submersible pump will rub against each other, causing severe vibration during the operation of the submersible pump, straighten the curved shaft.
4. Loose connection flange and bolts of submersible pump
The treatment method is to tighten the bolts to make the flange connection firm.

5. Bearing wear of submersible pump
The treatment method is to replace the damaged rolling bearing or lubricated bearing and bushing.