Separation speed of undamped metal bellows contacting mechanical face seals
Separation speed of undamped metal bellows contacting mechanical face seals
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DOI：
10.1080/10402009008981944
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
I. Green
中科院分区：
文献类型：
--
作者：
I. Green
接触式机械密封负载不平衡。不平衡负载（关闭力和打开力之间的差）使密闭面处于机械接触状态，抑制了密封坝中流体压力的产生。接触机械端面密封的两个主要问题是端面的磨损率以及这些端面在运行时是否会分离。这两种失效模式与波纹管中的初始压缩量（即预设量）和液压载荷直接相关。基于接触力学的语用模型，提出了一种新的分离准则。这里推导的分离速度比二十多年前发现的要保守得多。将磨损最小化的最佳速度确定在系统的共振频率上，从而为改进设计提供指导。发表于1989年5月1日至4日在乔治亚州亚特兰大举行的第44届年会上
Contacting mechanical seals are load unbalanced. The unbalanced load (the difference between closing and opening forces) causes the seal faces to be in mechanical contact suppressing fluid pressure generation in the sealing dam. The two major concerns with contacting mechanical face seals are the wear rate of the faces and whether these faces will separate while in operation. These two modes of failure are directly related to the amount of initial compression (i.e., preset) in the bellows and the hydraulic loading. A new criterion for separation is presented based on a pragmatic model of the mechanics of contact. The separation speed derived herein is less conservative than that found more than two decades ago. The optimal speed which minimizes wear is determined to occur at the resonance frequencies of the system, thus providing guidelines for improved designs. Presented at the 44th Annual Meeting in Atlanta, Georgia May 1–4, 1989