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May 11, 2022 View:

Reasons For Leakage Of Mechanical Seal Of Rotary Lobe Pump In Trial Operation

After the static test of the mechanical seal of the lobe pump, the centrifugal force generated by the high-speed rotation during operation will inhibit the leakage of media. Therefore, the mechanical seal leakage during trial operation in the exclusion of the shaft and end cover seal failure, basically due to the dynamic, static ring friction sub damage caused by. The main factors causing the frictional side of the seal failure are.

(l) In operation, abnormal phenomena such as evacuation, cavitation and pressure-holding cause large axial forces, which separate the moving and static ring contact surfaces.

(2) Excessive compression on the installation of mechanical seals, resulting in severe wear and abrasion on the end surfaces of the friction subsets.

(3) The moving ring seal is too tight and the spring is unable to adjust the axial float of the moving ring.

(4) static ring seal is too loose, when the dynamic ring axial floating, static ring from the static ring seat.

(5) working medium with granular material, running into the friction sub, probing the dynamic, static ring sealing end face.

(6) design selection errors, sealing end face than the pressure is low or sealing material cold shrinkage, etc..

The above is the lobe pump mechanical seal test run leakage causes, to learn more about the lobe pump mechanical seal related knowledge please pay attention to: