The influence of groove diameter to diameter ratio on mechanical seal performance-

The influence of groove diameter to diameter ratio on mechanical seal performance

　2018-08-27　　

The influence of groove diameter to width diameter ratio on mechanical seal performance:

The ratio of the radial width of the groove area to the width of the sealing surface is called the groove diameter-to-diameter ratio, and its geometric meaning is the radial ratio of the tip area on the sealing surface. The curves in Figures 3-20 illustrate the role of the groove area and the dam area on the end face of the pumping mechanical seal upstream of the spiral groove. When the groove diameter width to diameter ratio increases from 0, the area of u200bu200bthe groove area continues to increase, the fluid dynamic sweat: effect increases, and the fluid film stiffness and upstream pumping volume also continue to increase. The fluid film stiffness reaches the maximum value near the groove diameter to diameter ratio of 0.73. However, with the further increase of the groove diameter ratio, the dam area becomes too small, and then the fluid film stiffness begins to decrease. It can be seen that although reducing the sealing dam or no sealing dam can increase the upstream pumping volume, from the perspective of sealing stability, such a structure is not suitable. 113 mechanical seal

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The influence of the inclination angle of the spiral groove on the mechanical seal performance 　　 the influence of the groove width ratio on the mechanical seal performance