A Guide to Mechanical Seals
Mechanical seals are devices that aid in connecting systems together to prevent leakage. Some of the techniques used by the mechanical seals to prevent leakages include holding pressure and eliminating contamination. The adhesion and compression of the mechanical seals are the main determinants of the competence of the mechanical seals. Before exploring how mechanical seals operates, It is very to understand other methods of forming a seal. One of the commonly used traditional seals is the Gland packing. Gland packing is a plaited, rope like material that is crammed around the shaft – physically padding the cavity between the shaft and the pump housing. However, people are switching to the mechanical seals due to numerous reasons. This is due to the fact that the Gland packing seals requires pressing besides the shaft so as to lessen outflow, this implies that pump will require more power in order to turn the shaft hence wasting energy. Additionally, the friction of the shaft implies that the Gland packing will need to be supplied with large amount of water for cooling purposes. Moreover, the friction that occurs as a result of the rotating shafts causes wearing of the shafts which cause increased leakage. Also, it is very costly to repair the worn out shafts as a result of the friction between the rotating shafts.
People have various reason as to why the use mechanical seals. It has been proved that when using a mechanical seal, there is no visible leak, this implies that the seals do leak vapor when the fluid reaches the atmospheric side of the seal faces. Additionally, in the mechanical seals, the cartridge seals does not destroy the shaft of the pump. The ability of the mechanical seal of self-adjusting when their faces begin to wear due to friction helps in lowering the day to day maintenance cost. Additionally, the Apex sealing use less water compared to the traditional seals and also there is less corrosion of a plant equipment in the event that the product is contained in the pump. A type of mechanical seal that is used in rotating gear, such as thrusts, blenders, blowers, and compressors is known as an end face mechanical seal. At times, the fluid leak out of the pump between the rotating shaft and the stationary pump casing when the pump functions. Moreover, the mechanical seal face geometry is considered to be the one of the most critical design elements within a mechanical seal. The seal face properties include the balance diameter, the centroid setting, and the surface area. Other properties include, the surface finish, the drive mechanism, and the face topography.