A Numerical Analysis of the Inner Flow Field with Spiral Groove Shape Face for Liquid

Research on end spiral groove shape mechanical seal has made significant progress,especially in the production of dry gas seal for spiral groove,but the inner flow field for liquid mechanical seal characteristics and performance of the research is still further.The liquid membrane surface pressure control equations are established based on an analysis of the characteristics and mechanism of liquid mechanical seal,using FLUENT for conventional mechanical face seal(CMFS) and spiral groove mechanical seal of the flow field in numerical simulation.The pressure,wall shear force,velocity distribution and leakage are presented,comparison,and analysis in depth of characteristics and the sealing performance.The results show that compared with CMFS,spiral groove liquid mechanical seal face exist beyond the high and medium pressure,get seal leakage of liquid back the diameter,and so on.It is the main reason for smaller leakage of the spiral groove mechanical seal and producing significant opening force.