Common causes of motor vibration and elimination measures:
1, partial bearing wear: the unit is not the heart or bearing wear. Elimination measures: re-school crew concentricity, adjust or replace the bearings.
2, fixed rotor friction: uneven air gap or bearing wear. Elimination measures: readjust the air gap, adjust or replace the bearing.
3, the rotor can not stop at any position or power imbalance. Elimination measures: re-school rotor static balance and dynamic balance.
4, axial loose: loose screws or poor installation. Remedy: Tighten the screws and check the mounting quality.
5, based on the vibration: the basis of poor stiffness or bottom screw loose. Remedy: Reinforce the foundation or tighten the bottom corner screw.
6, three-phase current instability: torque decreases, rotor cage or end ring failure. Remedy: Check and repair rotor cages or end rings.
Common causes of pump vibration and elimination measures 1, manual turning difficulties: shaft bending, bearing wear, the unit is not the heart, impeller touch the pump shell. Elimination measures: straightening pump shaft, adjust or replace the bearings, re-unit concentricity, re-adjust the gap.
2, the pump shaft swing too large: bearings and journal wear or gap is too large. Elimination measures: Repair journal, adjust or replace bearing.
3, hydraulic imbalance: impeller imbalance, centrifugal block individual leaf blockage or damage. Elimination measures: re-school impeller static balance and dynamic balance, eliminate clogging, repair or replacement of the impeller.
4, axial pump shaft power is too large: the water level is too low into the sink, impeller inundation depth is not enough debris around the impeller, pump cavitation damage to varying degrees, the impeller defect. Elimination measures: Raise the water level into the pool, reduce the elevation of the pump to remove debris, and set the fence eaves, repair or replacement of the impeller.
5, based on the vibration: the basis of poor stiffness or bottom screw loose or resonance. Elimination measures: Reinforcing the foundation, tighten the ground screw.
6, centrifugal pump unit efficiency dropped sharply or axial pump unit efficiency decreased slightly, accompanied by cavitation noise. Elimination measures: Change the pump speed, avoid the resonance area, identify the cause of cavitation occurs, take measures to eliminate cavitation.
Other causes of unit vibration and elimination measures:
1, trash rack plug, reduce the water level into the pool. Elimination measures: fence decontamination, add column fence decontamination device.
2, the front pool and the influent pool design is not reasonable, the influent waterway and the pump does not support the deterioration of water conditions. Elimination measures: bar decontamination clean, add a bar ram decontamination device design and reasonable into the former pool, into the pool and inflow channel design.
3, the formation of siphon time is too long, so that the unit for a long time in non-design conditions. Elimination measures: Add vacuum device, reasonable design and improvement of siphon water outlet.
4, influent pipeline fixed or cause resonance. Elimination measures: Add pipe piers and piers, pipe reinforcement support, change the operating parameters, change the operating parameters to avoid the resonance zone.
5, beat the door repeatedly hit the door or close the impact force is too large. Elimination measures: Flow channel (or pipe) outlet before the vent, a reasonable design of the door to take control measures to reduce the impact when the shutter door closed.
6, the rapid changes in the pressure inside the water pipe and water hammer effect. Elimination measures: Slow closing valve and surge tank and other anti-water hammer measures.
7, the unit start and stop the order is not reasonable, resulting in deteriorating water pump conditions. Elimination measures: optimize the boot and shutdown sequence.
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Shandong Zhongshan Photoelectric Materials Co., Ltd , https://www.zshcchem.com