First, the centrifugal pump vibration and the reasons for the noise:
(1) Air is left in the water pump or in the suction line.
(2) The situation in Sheung Shui was not good and cavitation occurred.
(3) When the flow rate is extremely small, the pump operates to generate vibration.
(4) The pump shaft is different from the prime mover shaft.
(5) Friction between impeller stop and seal ring.
(6) The bearing is damaged.
(7) There is debris in the pump or in the pipeline.
(8) Pump rotor imbalance causes vibration.
(9) The bearing cartridge is too little or too dirty.
(10) The foundation is not strong.
(11) The elastic block in the claw type coupling is damaged and the elastic coupling film is damaged.
Second, centrifugal pump vibration and noise elimination methods:
(1) Refill the pump, open the vent valve, and drain the pump air.
(2) Reducing the suction height of the pump, reducing the resistance of the suction pipeline, increasing the height of the liquid level of the large tank, adding the induction wheel to the pump inlet, and lowering the temperature of the transmission medium.
(3) Open a large outlet valve to allow the pump to operate in the optimal operating conditions.
(4) Measure and adjust the concentricity of the centrifugal pump unit to meet the standard requirements; straighten or replace the pump shaft so that the shaft curvature reaches the standard.
(5) Check and adjust the gap between the impeller stopper and the seal ring.
(6) Measurement Adjust bearing clearance or replace bearing.
(7) Remove debris.
(8) Perform rotor loading and inspection of radial runout of the rotor, perform dynamic and static balance testing, and adjust to the specified range.
(9) Add lubricating oil (fat) or new lubricating oil (fat) as required.
(10) Reinforce the foundation or replace the foundation.
(11) Replace the elastic block and rubber apron.
(1) Air is left in the water pump or in the suction line.
(2) The situation in Sheung Shui was not good and cavitation occurred.
(3) When the flow rate is extremely small, the pump operates to generate vibration.
(4) The pump shaft is different from the prime mover shaft.
(5) Friction between impeller stop and seal ring.
(6) The bearing is damaged.
(7) There is debris in the pump or in the pipeline.
(8) Pump rotor imbalance causes vibration.
(9) The bearing cartridge is too little or too dirty.
(10) The foundation is not strong.
(11) The elastic block in the claw type coupling is damaged and the elastic coupling film is damaged.
Second, centrifugal pump vibration and noise elimination methods:
(1) Refill the pump, open the vent valve, and drain the pump air.
(2) Reducing the suction height of the pump, reducing the resistance of the suction pipeline, increasing the height of the liquid level of the large tank, adding the induction wheel to the pump inlet, and lowering the temperature of the transmission medium.
(3) Open a large outlet valve to allow the pump to operate in the optimal operating conditions.
(4) Measure and adjust the concentricity of the centrifugal pump unit to meet the standard requirements; straighten or replace the pump shaft so that the shaft curvature reaches the standard.
(5) Check and adjust the gap between the impeller stopper and the seal ring.
(6) Measurement Adjust bearing clearance or replace bearing.
(7) Remove debris.
(8) Perform rotor loading and inspection of radial runout of the rotor, perform dynamic and static balance testing, and adjust to the specified range.
(9) Add lubricating oil (fat) or new lubricating oil (fat) as required.
(10) Reinforce the foundation or replace the foundation.
(11) Replace the elastic block and rubber apron.
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