Abnormalities in mechanical seals
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Why does the mechanical seal leak the process medium when some pumps stop operating, but remain leak-free when they are running? What’s the situation at this time?
During operation, foreign objects or oil have sealed it off
A condition that occurs when the force exerted by the material on the seal suddenly decreases, or becomes less than atmospheric pressure.
Gap wear or changes in spring tension can be compensated for by adding a shim to the spring
The spring’s compensating capacity decreases, and the clearance between the friction pairs increases in a static state. It is recommended to replace the machine seal or its elastic compensation element
1. Pressure exists inside the chamber during operation, ensuring that the seal fits tightly. 2. It’s best to replace the seal; it is likely damaged.
A decrease in the spring preload or scaling on the compensation mechanism results in insufficient compensation force for the mechanical seal