27-47 ASPECTE PRIVIND EROZIUNEA CAVITAȚIONALĂ LA CONURILE ASPIRATOARE DE LA TURBINELE FRANCIS


ASPECTS OF CAVITATION EROSION AT SUCTION
CONES FROM FRANCIS TURBINES
In this article is presented the effect of cavitation applied to the suction cones that equip Francis turbines of HPP Motru. Cavitation erosion is evaluated through in-situ measurements are processed and presented in a new way in this article. It was determined a correlation between various regimes of functioning and the cavitation erosion appeared on the suction cones. Also experimentally was determined optimal maintenance period considering the cavitation attack intensity.
Keywords: cavitation, vacuum con, turbine, Francis, coefficients of cavitation, aeration
Cuvinte cheie: cavitație, con aspirator, turbină, Francis, coeficienți de cavitație, aerare

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