1.The installation of static test leakage: if the leakage is small, and more for the dynamic ring or static ring sealing ring there is a problem: when the leakage is large, it shows that there is a problem 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.Test operation occurs when the leakage: centrifugal pump mechanical seal after static test, the operation of the centrifugal force generated by high-speed rotation, will inhibit the leakage of media. Therefore, the exclusion of shaft and end cap seal failure, basically due to the dynamic, static ring friction caused by damage. Most of the need to re assemble and disassemble, replace the seal.
3.The normal operation of a sudden leak: the centrifugal pump in the operation of the sudden leakage of most of the work is due to a larger change or operation and maintenance caused by improper. Time, cavitation or longer hold pressure, resulting in seal damage; pump actual output is small, a large number of medium pump cycle, 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 kinds of leakage, should be based on the problem to choose the appropriate solution, can change it, can repair. Not just minor repairs, reluctantly centrifugal pump used for a period of time, such as big problems to overhaul.
