The effect of the groove depth of the mechanical seal end face on the sealing performance-

The effect of groove depth on the end face of mechanical seal on sealing performance

　2018-08-27　　

The influence of the groove depth of the end face of a mechanical seal on the sealing performance:

Under the condition that other parameters remain unchanged, investigate the influence of the end face groove depth of the mechanical seal on the performance of the pumping mechanical seal upstream of the spiral groove. The influence rule is shown in Figure 3-17. 110 mechanical seal

It can be seen that after a certain depth of spiral groove is opened on the sealing end face, an upstream feeding shear flow can be generated, which achieves the purpose of upstream pumping. In addition, the depth of the groove has a significant effect on the stiffness and opening force of the sealing fluid film. The fluid film stiffness has a maximum value when the dimensionless groove depth is 5. When the groove depth deviates from this value, the rigidity of the fluid film decreases quickly. It can be seen that small changes in the groove depth will have a great impact on the stability of the sealing work.　　943.html,

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