Study on the Technology of Combined Seal of Magnetic Fluid Seal and Mechanical Seal

摘要

A kind of combined seal of magnetic fluid seal and mechanical seal was designed in order to improve the capacity in the magnetic fluid seal for sealing liquid for the performance of increasing saturation magnetization and magnetic field strength was not satisfied. It mainly indicates the pressure-resistant capacity of combined seal of mechanical seal and magnetic fluid seal in this paper and verifies the pressure-resistant capacity of combined seal is better than the independent magnetic fluid seal both in the static seal and rotary seal for sealing liquid. The effect of coupling model on the performance of combined seal was studied. Results show that the film in seal end faces has large influence on some factors such as initial cone angle of the seal rings and the fluid-solid coupling effect.