Application of ANSYS in the Hydraulic Generator Rotor Bracket Crack

Abstract

The rotor vibration of the unit is sensitive to the running conditions for the turbine group low head, high flow characteristics. It easily lead the rotor bracket of oblique arm structure to crack. The reason of rotor bracket cracks is proved by ANSYS analysis and its repair program have been identified. Running for some time after repair, the main parameters, such as air-gap and other unit operation , have been analyzed. The results are satisfactory, which verifies that the analysis of the rotor bracket crack repair is objective and reasonable.