Mechanical seal failure phenomenon and analysis pump mechanical seals are available in a wide variety of models, there are five main leak points. The shaft seal is exposed to widely varying operating conditions. The lifeline of your machine, a mechanical seal contains. Eliminate mechanical seal failure in a crude distillation unit. The purpose of a mechanical seal is to prevent leakage, but all seals. Failure of mechanical shaft seals the knowledge link. Mechanical seal leakage in pumps how much, if at all, mechanical seals do, must or must not leak is a controversial subject for which there are few clear answers.
Checklist of problems vvith centrifugal pumps and their causes. Loud blow is heard each time pump is started or stopped 20. In the meantime, here are a few of the most common causes of pump seal failure. This type operation can produce high levels of vibration that culminate in damage and the abbreviated functional lives of the bearings and mechanical seals. The overwhelming reason for a pump to enter the shop is because of failure of the mechanical seal or packing, yet very. Pump vibration is caused by pump imbalance, improper alignment, operating the pump too far to the right or left of the bep best efficiency point on the performance curve, etc.
Mechanism based failure analysis university of twente research. The root causes of failure for the mechanical seals for 16 hot hydrocarbon service pumps with operating temperatures in excess of 250c are discussed here. Vibration hurts your equipment and can result in damaged seals and shortened seal life. Certain component failures of a centrifugal pump, such as coupling, hydraulic, static joints, and bearings, will cause the whole system to fail, but. Mechanical seals ensure that pumps do not leak, which can cause damage to the rest of the machine. Extend mechanical seal life fluid sealing association. How to respond to mechanical seal leakage in a centrifugal pump. Check out this post for the most common reasons mechanical seals fail. This document is intended to clarify what to expect on mechanical seals found in colfax products. Casing bursts each time pump is started or stopped 21. The mechanical seal is the shaft seal device of the centrifugal pump, which has the advantages of small leakage and long life.
390 207 401 1042 734 846 1550 390 1023 1176 639 469 973 454 801 133 694 546 997 1276 938 915 67 1313 296 1317 1102 627 1296 796 839 998 426 161 248 635 891 447