Pipeline pump noise vibration problem analysis and treatment
2023-01-06
A, the rotor balance in the pipeline pump is reduced: due to the high speed of the pump rotation work, is to make the rotor and rotary deviation, which in turn leads to vibration, the problem may occur when the pump manufacturer in the design of the pump has not installed the standard to make. It is also possible that the rotor is too long, a certain amount of shaft deviation or parts of the wear and tear caused by the rotor in the work of reducing precision. The above problems occur on the rotor to carry out maintenance or replacement can be solved.
Second, the impact of the working conditions, generally speaking, the pipeline pump is working in accordance with the requirements of the working conditions to work, and take the ordinary pump in a small flow or high flow conditions will inevitably lead to pump noise and vibration, the above problems lead to water impulse, reduce the water impulse can, the key from the following 2 points.
(1) appropriate to increase the distance between the outer diameter of the impeller and the pump casing partition tongue.
(2) change the linearity of the flow channel, try to avoid the flow channel area and flow rate is too small or too large or change too large, that can moderate the impact. In the long-term small flow can be used when the small diameter of the pump, the same reason when the workload is large, you can choose a large diameter of the pipeline pump, that is also an effective way to avoid pump vibration noise.
Third, the pipeline pump installation: such as pipeline pump and base, base and foundation, such as the occurrence of loose conditions, the motor and pump link coupling coaxiality is low, etc., may lead to vibration and noise, must be torqued again coupling bolts, or again corrected.
Fourth, the impeller runner blockage: When the impeller runner is blocked with debris, it will lead to the impeller bias, uneven force on various parts, which will lead to increased vibration of the pump. Remove the impeller to carry out inspection and clean the runner.
Fifth, bearing damage: If the bearing is damaged, in addition to its own operation noise becomes larger, will make the rotor movement lose stability, will lead to pump unit vibration and noise becomes larger.
Six, pipe pump cavitation: cavitation process will lead to bubbles and bubble rupture conditions, which will lead to vibration and noise, if the vibration is caused by cavitation in view of the pipe pump, consider changing the installation height or increase the system pressure, in addition to choose the right model of pump industry is very critical.
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