Leakage phenomenon of mechanical seal-

Leakage phenomenon of mechanical seal

　2017-02-21　　

The leakage phenomenon of mechanical seal

The leakage of fluid through the gap of the mechanical sealing surface is usually referred to as penetrating leakage. At this time, the sealed fluid leaks through the macroscopic or microscopic gap h(m) under the action of the pressure difference p (MPa). Therefore, the leakage is one-way leakage, and the power is the pressure difference.

For an ideal model, when leaking through a parallel plane gap of size width B, height h, and length l, the leakage flow per unit surrounding liquid volume in laminar flow is when the liquid Reynolds number exceeds the critical Reynolds number of feet~, the liquid Leakage changes from laminar flow to turbulent flow. For gas, the mass leakage per unit width of the flow is usually equal to before the critical flow. However, since the actual sealing surface has a small gap and a relatively large roughness value, it is sometimes difficult to simplify the above ideal situation. The fluid flow state is also different, the above formula can only be used as a qualitative description.　　289.html,

The fluid leakage method of mechanical seal application 　　 leakage phenomenon of mechanical seal