Publikacje

Abstract:

The application of various modifications such as micro-channels, compartments, micro-pores, texturing in mechanical non-contacting seals causes changes of dynamic properties of the medium layer. This paper presents the results of analyses pertaining to the impact of surface topography on the vibrations of cooperating rings. The balance of forces working in a seal affects non-contacting operation, i.e. maintaining the stability of the medium layer separating the rings. The consequences thereof include: controlled leak, small wear of sliding surfaces and prolonged lifespan.

The presented model of gas face seals includes the non-linear Reynold's equation as well as the equations of dynamics describing the vibrations of the stator which were solved simultaneously with the use of numerical methods. The conducted analyses of the modeled seals and the obtained results may be useful when designing and choosing surface topography to the set operating conditions. It results in longer working time and reliable operation of devices in which those seals were installed. (C) 2015 Elsevier Ltd. All rights reserved.

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A parametric and dynamic analysis of non-contacting gas face seals with modified surfaces