Study of thermostressed condition cylinder of high pressure of steam turbine T - 100 - 130

The results of experimental and theoretical studies of the temperature and the thermostressed state of the high-pressure cylinder (HPC) housing of the steam turbine T-100-130 in the launch mode are presented. Using the method of L.V. Kantorovich, an approximate analytical solution of the problem of thermal conductivity for a two-layer wall of a turbine (metal housing - thermal insulation) is obtained for inhomogeneous boundary conditions of the third kind. On the basis of the obtained analytical solution, using the experimental data on the temperature of the outer surface of the metallic part of the turbine housing, the heat transfer coefficients on the inner (steam side) surface of the hull are determined by solving the inverse heat conduction problem. Using the solution obtained and the heat transfer coefficients found, the temperature state of the turbine casing in its various sections is determined. Based on the temperatures obtained, using the method of finite elements, the temperature stresses in the most heat-stressed case elements are found.