Analysis of causes of vertical pipeline pump failure and vibration
Summarize and summarize the causes and solutions of vibration in vertical pipeline pumps. In practical applications, corresponding measures can be taken according to specific circumstances to reduce vibration and improve the stability and reliability of the equipment.
The causes and solutions of vibration in vertical pipeline pumps can be summarized as follows:
1. Causes of vibration
1） Unbalanced or eccentric
The impeller, bearings and other components of the pump may be unbalanced or eccentric, causing the pump to vibrate during operation.
2） Fluid is unstable
When the fluid delivered by the pump contains gas or impurities, it will cause unstable fluid flow and produce liquid pulsation and vibration.
3）Liquid temperature changes
Rapid changes in liquid temperature can cause thermal expansion and contraction of pump components, resulting in vibration.
4）Bearing wear
When the bearing is damaged or severely worn, it will cause unbalanced movement of the pump, resulting in vibration.
5）Unreasonable pipeline layout
Improper support and fixation of the pipeline, or unreasonable design of the pipeline itself, will affect the stable operation of the pump and cause vibration.
6）Motor problems
Problems such as motor imbalance and bearing damage may also cause pump vibration.
2. Solution
1）Balance correction:
Balance and correct the impeller, bearings and other components of the pump to ensure balanced operation of each component of the equipment. Professional dynamic balancing machines can be used for detection and correction.
2） Improved fluid stability:
For fluid instability problems, the effects of gas and impurities can be reduced by installing gas separators, filters and other equipment at the pump inlet.
3） Control liquid temperature changes:
Install a temperature sensor at the inlet and outlet of the pump to monitor changes in liquid temperature in real time and take appropriate measures as needed, such as adding a cooling device or adjusting operating parameters.
4） Bearing inspection and replacement:
Regularly check the wear of the bearings. Once a severely worn or damaged bearing is found, it should be replaced in time. At the same time, ensure that the bearings are well lubricated to avoid wear caused by poor lubrication.
5） Pipeline layout optimization:
Optimize the design of the pipeline layout, reduce the number of elbows, reasonably set pipe diameter changes, etc., to reduce the resistance and vibration of the fluid in the pipeline.
6） Motor inspection and repair:
Regularly check the operating condition of the motor, including balance, bearing status, etc. Any problems found should be repaired or replaced promptly.
