Mechanical Seal System

The function of the sealing system is to choose the working methods such as flushing, circulation, heat sinking, etc., to control the working parameters of the mechanical seal, that is, temperature, pressure, smoothness, corrosion, crystallization, scaling, etc., and to avoid normal leakage of risk media. pollution of the environment.

Temperature control is particularly important for sealing media with high saturated vapor pressure and easy crystallization and condensation. The medium with high saturated vapor pressure is subjected to the stirring heat of the mechanical seal and the end face conflict heat in the sealing cavity, causing the temperature to rise. If the heat is not cooled down in time, it is likely to cause the medium to vaporize on the end face of the seal, damage the conflict condition, and cause the seal to fail. For the medium that is easy to crystallize and condense, it is necessary to adopt thermal insulation methods to prevent the medium from crystallizing and condensing, especially the medium that leaks out normally.

Generally, the filtered and cooled sealing medium is introduced into the sealing cavity through the sealing system, or the flushing fluid with good smoothness and compatible with the properties of the sealing medium is introduced into the sealing cavity, which fundamentally changes the lubrication conditions. This is very beneficial for the sealing of media with poor gas phase and liquid phase smoothness and high saturated vapor pressure.

The control pressure is very important for the double-face mechanical seal whose sealing chamber blocking fluid pressure is higher than the sealing medium pressure. In the series mechanical seal with step-by-step pressure reduction, the sealing system needs to participate in maintaining the pressure difference of the sealing fluid.

Controlling abrasion refers to the function of controlling the degree of abrasion of mechanical seals due to fine hard particles through the sealing system. This purpose can be achieved by choosing the method of self-media flushing or flushing fluid flushing with a hydrocyclone.

Avoid contamination from the control of environmental pollution caused by normal leakage of a small amount of the sealed risk medium through the sealing system. This purpose can be achieved by using the method of scouring outside the scour fluid. Fluid term for sealing systems.

Barrier fluid refers to the medium introduced from the outside and the sealed medium in double mechanical seals, series mechanical seals, external single mechanical seals with oil cups in vertical devices or externally applied hydrostatic mechanical seals. Compatible sealing fluid.

The sealing liquid system refers to the double-end mechanical seal, the fluid is introduced from the outside, and the fluid pressure is higher than the pressure of the sealing medium, which plays the role of blocking and blocking.