The influence of seal speed on mechanical seal performance-

The influence of seal speed on mechanical seal performance

　2018-08-29　　

The influence of seal speed on mechanical seal performance:

The influence of the seal speed on the mechanical seal performance is shown in Figure 3-23. It can be seen that when the other parameters remain unchanged and the sealing speed increases, the fluid film stiffness and upstream pumping layer are not greatly improved. Comparing the curves in Figs. 3-22 and Figs. 3-23, it is obvious that the influence of the sealing speed on the mechanical seal performance is greater than the influence of the sealing pressure. This is because the pumping mechanical seal upstream of the spiral groove is a hydrodynamic seal when it rotates. It relies on the hydrodynamic pressure effect generated when the spiral groove on the sealing surface rotates to form a shear flow that flows to the upstream high pressure side to achieve high pressure. Blockage of the medium. Therefore, the higher the sealing speed, the stronger the fluid dynamic pressure effect, and the greater the rigidity of the fluid film and the upstream feed rate. 119B mechanical seal

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