Evaluating leakage from radial lip seals affected by bearing area of shaft topography
Evaluating leakage from radial lip seals affected by bearing area of shaft topography
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发表时间：
2018
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通讯作者：
E. Kozuch;P. Nomikos;R. Rahmani;N. Morris;H. Rahnejat
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作者：
E. Kozuch;P. Nomikos;R. Rahmani;N. Morris;H. Rahnejat
本文研究了轴表面形貌对密封泄漏的影响，当使用不同的表面精加工和制造技术。流体动力学模型用于确定密封轴接触内产生的压力分布。选择相关的统计参数来区分不同的轴表面形貌，这有助于有效地密封连接。从流体动力学模型获得的结果显示，多个空化区的创建所造成的深谷。这导致表面平台上的膜厚度更薄，因此预测的泄漏率更低。峰和谷的分布被示出为区分接触性能的一个因素。
This paper investigates the influence of shaft surface topography upon seal leakage, when using different surface finishing and manufacturing techniques. A hydrodynamic model is used to determine the generated pressure distribution within the seal-shaft contact. Pertinent statistical parameters are selected to distinguish between the various shaft surface topographies, which can contribute to an effectively sealed conjunction. Results obtained from the hydrodynamic model shows the creation of multiple cavitated regions caused by the deep valleys. This leads to thinner film thickness on the surface plateau and therefore lower predicted leakage rates. The distribution of peaks and valleys is shown to be a factor in differentiating contact performance.