Open AccessTHEORETICAL RECOMMENDATIONS FOR CHOOSING THE WALL THICKNESS OF A LIP SEAL OPERATING WITHOUT LUBRICATION
Author(s) -
S. S. Busarov,
R. Roman,
N. Sinicin
Publication year - 2021
Publication title -
vestnik bgtu im. v.g. šuhova
Language(s) - English
Resource type - Journals
ISSN - 2071-7318
DOI - 10.34031/2071-7318-2021-7-3-103-111
Subject(s) - piston (optics) , seal (emblem) , materials science , cylinder , gas compressor , mechanical engineering , ultimate tensile strength , composite material , engineering drawing , structural engineering , engineering , optics , art , physics , wavefront , visual arts
As the literature review has shown, at this point in time, there are almost completely no recommendations for choosing the wall thickness of a cuff L-shaped seal operating mainly in dry friction conditions. The service life of the entire compressor unit will depend on the correct choice of the wall thickness of the seal. In this paper, recommendations for the design of a sleeve cylinder piston seal are considered. The basic calculation formulas for choosing the minimum wall thickness are presented, and the boundary conditions for choosing the maximum wall thickness are also presented. On the basis of ANSYS package programs, verification calculations of the calculated wall thicknesses were carried out at various pressures in the working chamber at an average temperature of plus 55 ° C. The pressure in the working chamber varied from 0.8 MPa to 3.5 MPa. In the course of the study, it was found that the maximum wall thickness of the seal should not exceed Smax = 3.7 mm, since a further increase in wall thickness will lead to an excess of permissible tensile stresses and reduce the elastic properties of the material. For the convenience of the user, in the Visual Basic for Applications (VBA) software environment, a calculator was developed for the rapid design of the geometry of the piston lip seal.