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The causes of fire pump set vibration - ZJBetter
Date: 2020-01-02
With the improvement of fire safety awareness, people's understanding of fire pumps has gradually increased. In the early years, the fire pump technology was low, the equipment cost was low, and it was left unused for a long time. Once it failed, it was replaced with new equipment. In theory, it is also a desirable measure. However, in recent years, the technology of fire pumps has been continuously enhanced, and large fire pumps have begun to enter life, just like diesel fire pumps. If it is replaced in case of failure, too costly. For this reason, today, I will talk about the reasons behind the vibration of the fire pump set.

Fire pump set vibration reasons: pump shaft or motor rotor shaft deformation, bearing damage and loose base fixing bolts, etc. It is recommended to make the following fault inquiries: 1. Check whether the fixed base bolt is firm; 2. Check whether the bearing part has overheated and poor rotation. If it is, it is caused by bearing damage. If not, the pump shaft or motor rotor shaft may be deformed and cause excessive vibration. 

Hidden dangers of fire pump set vibration failure: causing insufficient flow, heating of the pump body, poor operation, and stopping of the fire pump.
Other solutions for fire pump set vibration:
1. Check whether the grounding bolts of the pump set are loose or the foundation of the pump set is not good. If so, tighten the foundation bolts and strengthen the foundation. 
2. Check the tachometer to see if the turbine speed of the pump set exceeds the rated speed of the pump. If so, it is recommended to adjust the speed regulation system to make the pump work at its rated speed.
3. Check whether the impeller of the fire pump is damaged or there is foreign matter inhaled. If so, it is recommended to dismantle the pump in time to check and replace the damaged parts, and then adjust the centering and clearance of the coupling not to be too large.