Mathematical and physical simulation of diagnostics problem on the test rotor stand

摘要

Some diagnostics problems of complex rotor systems for power turbine units are considered. A list of the main problems that must be solved for the diagnostics of technical condition of shafting on journal bearings is offered. One of the most difficult task - diagnostics of a residual deflection of separate rotors in the shaft line is also considered. The multiple-bearing test rotor stand with journal bearings for the analysis of physical processes and development of a number of diagnostic signs of the defects measured automatically with use of the shaft encoder complete system according to GOST P 55263-2012 is offered. The stand consisting of two rotors and a driving engine connected by rigid couplings allows to simulate and vary all main defects of production and assembly of rotors and bearings. The key geometrical and technical parameters of rotors are specified. The main dynamic characteristics of the rotor stand and results of simulation of a rotor deflection with use of the special software are provided.