Type of sealing failure of pipeline centrifugal pump

Type of sealing failure of pipeline centrifugal pump

In the operation of pipeline centrifugal pump, a variety of faults are usually produced, and the leakage phenomenon is a comprehensive reflection of some faults.

 The reasons for the leakage are various, such as the improper selection of the sealing device, the improper use of the sealing elements, improper installation, improper operation and management.

In order to ensure the normal operation of the pipeline centrifugal pump, it should not only make routine maintenance work, but also check the operating condition of the pump.Therefore, understand the possible causes of leakage and grasp the analysis method of leakage so as to better maintain the normal operation of the pump.

The causes of leakage of centrifugal pump are: corrosion and wear, shaft seal failure, mechanical failure, etc. These faults are interrelated.

1. Corrosion and wear.Corrosion and wear can cause pump shell and pump perforation, produce a large amount of leakage, and wear the sealing element to make seal failure.The corrosion phenomenon is most commonly found in the pump conveying acid, alkali and salt waiting for the special liquid.The wear phenomenon is most commonly found in the pump of the conveying mine solution

2. The fault of shaft seal failure is mainly leakage.As the shaft seal of the dynamic seal, it is more difficult to seal effectively in the long term.

3. Mechanical failure is mainly caused by mechanical damage and vibration, which is usually closely related to the operating conditions of the centrifugal pump.

Experience shows that the leakage of centrifugal pump of pipeline is mainly in the shaft seal.In chemical pumps, corrosion and leakage are the main factors that cause the pump to leak.The damage of shaft seal and rolling bearing is the important cause of leakage in oil pump.