If the leakage of the centrifugal pump, what should we do?
1., leak during installation static test: if the leakage is small, most of them are movable rings or static ring seals. There is a problem: when the leakage is large, it indicates that there are problems between the dynamic and static ring friction pairs. In the preliminary observation of leakage, the leakage judgment based on the part of, and then manually turning observation, if leakage without significant changes in static and dynamic ring seal problem: dynamic and static friction ring problems; dynamic ring seal, static seal ring failure problem. In addition, the leakage channel can also exist at the same time.
2. the leakage of the test operation: centrifugal pump with mechanical seal after static test, the centrifugal force produced by high speed rotation, will inhibit the leakage of the medium. Therefore, the elimination of the seal failure between the shaft and the end cover is mainly caused by the damage of the friction pair of the dynamic and static rings. Most of them need to be reassembled and replaced.
3. the sudden leakage in the normal operation: the sudden leakage of the centrifugal pump is due to the large change of the working condition or the improper operation and maintenance. Time, or a longer period of time cavitation pressure, resulting in seal failure; the actual pump output is small, a large number of medium circulation pump, heat accumulation. Caused gasification medium, resulting in seal failure; outage for a longer period of time, there is no manual re start when turning, friction due to adhesion and tearing sealing surface; medium corrosion, polymerization, node number of plastic material; environmental temperature sharply changes.
Above all sorts of leakage, should choose the corresponding solution according to the problem, can change to change, can repair to repair. Not just minor repairs, reluctantly centrifugal pump used for a period of time, such as big problems to overhaul.
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