Study on Optimization Design of End Face Wear Reduction of Gas-Liquid Two-Phase Mechanical Seal for High Speed Bearing Chamber

Mechanical seal is a common sealing method in high-speed bearing chamber, but it often faces the problems of friction and wear in practical application. Aiming at the above problems, the optimization design of the end face wear reduction of the gas-liquid two-phase mechanical seal for high speed bearing chamber is proposed. Firstly, the friction state is analyzed deeply. After identifying the wear mechanism, the mechanical seal face is treated to improve its wear resistance and reduce the friction coefficient. Then, the mechanical seal face structure is optimized by introducing appropriate hydrodynamic pressure design. Finally, through the appropriate lubricant selection, the end face temperature is effectively reduced and the friction heat accumulation is reduced. At the same time, the cooling system design is optimized to ensure that the seal face is fully cooled during operation. The experimental results show that the friction generated by the mechanical seal can be significantly reduced through a series of comprehensive application of optimization design, so as to ensure the stability and reliability of the gas-liquid two-phase mechanical seal system of the high-speed bearing chamber.