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本文研究了动、静环加强对其端面变形以及机械密封端面特性的影响。动、静环加强减少了端面变形,使端面上液膜反压系数由0.26增加至0.50,极限工作压力由2MP_a(20kgf/cm~2)提高到4.5MP_a(45kgf/Cm~22)。在线速度13m/s,常温,清水条件下,浸树脂石墨对碳化钨的端面摩擦系数在相当宽的pV值范围内保持为定值0.058。当单位密封面承担的剪切能达0.11kW/cm~2时,摩擦系数急剧上升。上述两个特征量同载荷系数大小以及同动、静环是否加强都没有关系。
In this paper, the effects of dynamic and static reinforcement on the deformation of the end face and the characteristics of the mechanical seal face are studied. The dynamic and static ring reinforcement reduced the deformation of the end face, and increased the back pressure coefficient of the liquid film on the end face from 0.26 to 0.50. The working pressure increased from 2MPa to 20MPa at 4.5MPa (45kgf / cm ~ 22). At a linear velocity of 13 m / s at room temperature and in clear water, the end-face friction coefficient of the resin-impregnated graphite to tungsten carbide remained at a constant value of 0.058 over a fairly wide range of pV values. When the unit sealing surface to bear the shear energy of 0.11kW / cm ~ 2, the friction coefficient increased sharply. The above two features with the load factor and the size of the same, static ring whether or not to strengthen.