A n analysis of the mechanical stress in hydroelectric turbines stay-vanes under different operational states of the electric generator

FACUNDO ENRIQUE GONZALEZ; DIEGO A KELM; JAVIER ERNESTO KOLODZIEJ; GABRIEL ALEJANDRO TARNOWSKI; RAÚL ASTELLI; HUGO BORDÓN

American Journal of Hydropower, Water and Environment Systems

Acta Editora/LAWG-IAHR

Año: 2016 vol. 3 p. 35 - 38

2317-126X

In a large Kaplan turbine of 160MW the vanes of the stay vane direct the water from the spiral chamber to the wicket gate that regulates the turbine functioning condition. These vanes also support the civil structure that holds the combination of the turbinegenerator. Like these vanes are working under different load, the knowledge about their dynamic behavior has special importance to decide the operational strategies of the electric generator. An analysis by means of finite elements allowed the determination of the natural frequencies and results are used for choose the localization of the strain gages for stress analysis.