(一) 前言机械密封设计计算内容包括:在给定的密封工作条件下,正确选择机械密封的结构型式及零件材质;其次,针对这一选定的密封结构,确定最小允许端面比压;确定摩擦付和弹簧的主要尺寸;计算密封端面平均线速度及P_bV值;最后根据试验或统计资料进行修正。此外,再计算密封的摩擦功率。 (I) Preface Mechanical seal design calculations include: the correct choice of the mechanical seal of the structure type and parts under given sealing conditions; secondly, for the selected seal structure, to determine the minimum allowable end face pressure; to determine Friction Fu and the main dimensions of the spring; calculate the average sealing linear velocity and P_bV end; according to the test or statistical data to be amended. In addition, the sealed frictional power is recalculated.