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在过去很长一段时间内,液体端面机械密封始终被认为是依靠液膜润滑工作的。可是,不论从实际观察中或在试验研究中,均能觉察到液体机械密封不只是单纯依靠液相膜工作,而且还存在着汽相和汽液混相膜工作的机械密封。 究竟机械密封处于哪种相态流体膜下工作最经济最可靠呢?也就是在哪种相态流体膜下工作,机械密封的泄漏量最小、摩擦功耗和磨损量最少呢?在这样很窄的密封面间发生相
In the past a long time, the liquid end of the mechanical seal has always been considered to rely on liquid film lubrication work. However, both in practice and in experimental studies, it is noticed that liquid mechanical seals rely not solely on liquid phase membranes but also mechanical seals for the operation of vapor phase and vapor-liquid miscible membranes. What is the most economical and reliable working condition for a mechanical seal? Which phase fluid film is used, the minimum amount of mechanical seal leakage, and the least amount of frictional power and wear? The sealing surface occurs between the phase