Pump mechanical seal leak analysis and maintenance program

Pump mechanical seal leakage point analysis and maintenance programs Pump mechanical seal a wide range of different models, but there are five main points of leakage: (1) sleeve and shaft seal; (2) between the moving ring and the shaft seal ; (3) moving, static seal between the ring; (4) on the stationary ring and static ring seat between the seal; (5) Seal the seal between the cover and the pump body. Generally speaking, it is relatively easy to find out and solve the leakage between the extended shaft of the sleeve and the seal cap and the pump body. However, careful observation is required, especially when the working medium is liquefied gas or high pressure, toxic and harmful gas some. The rest of the leakage intuitively difficult to distinguish and judge, to be long-term management, maintenance practice, based on the leakage symptoms observed, analyzed and judged in order to draw the correct conclusion. First, the leakage analysis and judgment 1. Leakage during static test. Mechanical seal installation and commissioning is good, the general should be static test, observe the amount of leakage. If the leakage is small, mostly ring or static ring seal problems; leakage is large, then that dynamic and static friction ring there is a problem. In the initial observation of the leakage, to determine the leakage site, based on manual observation disk, if the leakage was no significant changes in the static and dynamic ring seal problems; such as the disk when there is a significant change in leakage can be concluded that the move, Static friction ring there is a problem; such as the leakage of media along the axial injection, the dynamic ring seal there are many problems, leakage to the surrounding medium jet or water leakage from the hole, the more static ring failure. In addition, the leak channel can exist at the same time, but generally there are major and minor differences, as long as careful observation, familiar with the structure, we must be able to correctly judge.

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