Overview
ABSTRACT
This article highlights the phenomena involved in the functioning of mechanical face seals, and the broad variety of their fields of industrial application. The geometrical and kinematic analysis of this component, which can present various types of set-up, is described. Lastly the lubrication theory of the simple case of two aligned faces separated by a thin lubricant film of fixed thickness is developed.
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Read the articleAUTHORS
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Bernard TOURNERIE : Professor Emeritus, University of Poitiers - Institut P', UPR CNRS 3346, Poitiers, France
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Noël BRUNETIÈRE : CNRS research fellow - Institut P', UPR CNRS 3346, Poitiers, France
INTRODUCTION
Mechanical seals could pass for relatively trivial mechanical components if we were to consider only the arrangement and number of parts that make them up. This is not the case, and this article reminds us that there is a wide variety of operating conditions and technological arrangements for seals, the technical aspects of which are developed in articles
Their behavior is the result of a variety of interacting phenomena: lubrication of friction surfaces, kinematics, dynamics, thermomechanical deformation of component parts, heat dissipation and transfer, etc.
In some cases, approximations allow us to consider that the faces of a trim are aligned. The corresponding theoretical model, developed in this article, is relatively simple. It leads to analytical or semi-analytical solutions that can easily be used by design engineers. These solutions make it possible to highlight certain key phenomena in the behavior of seals, and to assess their performance with sufficient accuracy in many cases.
A table of acronyms and symbols can be found at the end of this article (§ 6 ).
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KEYWORDS
| | lubrication | rotating sealing
Mechanical face seals. Hydrostatic lubrication
Phenomena involved and industrial applications
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