Centrifugal pumps in operation, the leaking problem, little part is due to normal wear and tear or reached the long service life, most attributed to in the actual operation condition of mutation and operation, improper maintenance and other reasons caused. The following summary of the following 7 points, leading to the destruction of the mechanical seal of the centrifugal pump.
1. Medium corrosion, polymeric substances increased
2. Long time outage, restart without manual turning, side friction due to adhesion damage to the sealing surface
3. For a long time to suppress pressure, time to cavitation phenomenon, but also the reasons for the destruction of the sealing surface
4. Pipeline centrifugal pump output is small and medium pump caused by the heat accumulation, gasification, seal will failure valve knowledge network
5. The environment temperature changes rapidly, the working condition change frequently causes the seal destruction
6. Back flow side of the container at the bottom of the surface sediment, resulting in damage to the sealing suction pipe;
7. Power outage or failure shutdown valve knowledge network
Centrifugal pump in the normal operation of the sudden leakage, such as can not be found in a timely manner, often lead to a larger accident or loss, must be taken seriously and to take effective measures.
