Solutions to abnormal vibration and noise of diesel engine fire pump
May 06, 2022
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If the diesel engine fire pump has an abnormal condition, in addition to the problem of its own operation, the rest is that it may be faulty. A few days ago, a customer said that his diesel engine fire pump vibrated strangely and made noise. What should I do? Yes, here is the solution:
1. Check to see if the grounding anchor bolts of the pump set are loose or the foundation on which the pump set is placed is defective. Please tighten the anchor bolts and reinforce the foundation.
2. Check the tachometer to see if the steam turbine speed of the pump set exceeds the rated speed of the pump, and adjust the speed control system to make the pump work at its rated speed.
3. The noise may be caused by the dehydration of the gap in the suction pipe, resulting in a large amount of gas inhalation. At this time, please check whether there is a vortex at the suction port, whether the submerged depth is too shallow, etc., and adjust the height between the suction port and the liquid level.
4. The above fault phenomenon will also occur when the pump has flow erosion (excessive flow rate, increased suction resistance or increased liquid operating temperature).
5. Check whether the impeller is damaged or there is foreign matter inhaled. At this time, the pump should be disassembled to check and replace the damaged parts. Finally, the alignment of the coupling should be adjusted and the clearance should not be too large.
1. Check to see if the grounding anchor bolts of the pump set are loose or the foundation on which the pump set is placed is defective. Please tighten the anchor bolts and reinforce the foundation.
2. Check the tachometer to see if the steam turbine speed of the pump set exceeds the rated speed of the pump, and adjust the speed control system to make the pump work at its rated speed.
3. The noise may be caused by the dehydration of the gap in the suction pipe, resulting in a large amount of gas inhalation. At this time, please check whether there is a vortex at the suction port, whether the submerged depth is too shallow, etc., and adjust the height between the suction port and the liquid level.
4. The above fault phenomenon will also occur when the pump has flow erosion (excessive flow rate, increased suction resistance or increased liquid operating temperature).
5. Check whether the impeller is damaged or there is foreign matter inhaled. At this time, the pump should be disassembled to check and replace the damaged parts. Finally, the alignment of the coupling should be adjusted and the clearance should not be too large.
