What pressure can a mechanical seal withstand?
Thread Content
This post was last edited by yxmqh on 2010-10-28 at 16:38. For a high-pressure pump with an inlet pressure of 0.2 MPa and an outlet pressure of 8.0 MPa, and a pump unit with dual supports, what is the pressure at the mechanical seal? Is the pressure at the two sealing points different?
Vertical or horizontal – you’ll know just by looking at the drawing.
The sealing flush pressure should be 0.05Mpa to 0.15Mpa higher than the inlet pressure.
It is estimated that the pressure in the sealing chamber isn’t very high either; generally, the pressure in the sealing chamber is slightly higher than the pressure at the pump inlet. With a dual-support structure, a separate sealing system is required for both the drive end and the non-drive end, and I’m not too sure about the pressure conditions in those sealing chambers. However, there are still situations where mechanical seals are used under pressures of over 100 kilograms
It is a horizontal centrifugal high-pressure pump. Is there any pressure-reduction measure in place before sealing? If not, the seal will have to withstand the high pressure inside the pump, and the sealing pressures at both ends will also be different