ステップ形非接触メカニカル・シール特性への流体慣性力の影響

概要

論文の詳細を見る
The aim of the present study is to represent a probability to design of step shape noncontact mechanical seals under high-speed and high-pressure conditions for water pumps. Existing contact-type mechanical seals under these conditions show unstable seal performances. For a noncontact mechanical seal, we estimate the leak rate and obtain the conditions for stability and reliability. We derive equations for calculation of the leak rate, taking into consideration the influence of fluid inertia force by defining S, an inertia coefficient. Since the leak rate is influenced by fluid inertia force, it decreases as speed increases. We found that seal face stiffness is important in calculating seal dimensions and developed a diagram for seal design which takes into account fluid inertia force.
一般社団法人日本機械学会の論文
1996-12-25