Multi-objective optimization design of large diameter double floating face seal structure
For the problem of lack of standard for selection of the structural parameters of floating face seal ring with a diameter greater than 600 mm,the two-dimensional axisymmetric nonlinear contact model of the rubber O-ring was established.In combination with experimental design,finite element method(FEM),response surface model(RSM),multi-objective optimization and order preference by similarity to ideal solution,the optimization design of the double floating face seal of different structures was carried out,in which the maximum deformation and the face pressure were taken as the optimization objectives.Besides,the effects of seal ring structural parameters on the face pressure and deformation were analyzed.The results show that the larger the Rmin and β,the greater the face pressure;the larger Rmin and β,the smaller the mounting clearance A,and the larger the seal ring deformation.The main influence factors for face pressure are Rmin and β,and the main influence factor for deformation is Rmin.The optimum parameters of the floating ring are as follows:Rmin=381 mm,β=23° and A=18 mm.Correspondingly,the face pressure and maximum deformation of the seal ring are 0.49 MPa,and 12.11 μm,respectively.By the static pressure and operational seal performance testing,the designed double floating face seal has no leakage,which indicate that the optimization design method is feasible and effective.
double floating face sealstructural designmulti-objective optimizationdeformationface pressure
万方数据
维普
