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THE EVALUATION OF THE PELTON RUNNERS DESIGN AND MAINTENANCE PARAMETERS


ISBASOIU EUGEN CONSTANTIN, SAFTA CARMEN ANCA, RIZESCU GHEORGHE, ALAMOREANU ELENA
UNIVERSITY POLITEHNICA OF BUCHAREST

Issue:

MOCM, Number 7, Volume I

Section:

Issue No. 7 - Volume I (2001)

Abstract:

The analyses of working conditions and the study of the behavior in time of the Pelton runners loaded structures attended to the parameters identification that could definitely influences their durability. The fatigue of the runners' materials is changed for the worse because of the chemical medium aggressively and could generate stress state and deformations having an unexpected evolution. For this reason is necessary to developed new methods of risk factors evaluation in the design stage of the runners' conception or in the stage of technical reevaluation of the hydro-mechanical equipment. Reliability and life time estimation for such a hydroagregate by having an analysis of the factors that could influenced the structure integrity is a final option in the practice solution that take choice. The paper proposed gives a method of the durability analysis by combining the effects of critical working conditions of the runners' with the variable loading caused by the corrosive and aggressive medium of working against the runners' material. The runners' structure is static and dynamic analyzed and the parameters of the durability calculus will result. The study case presented in the paper shows the steps of the reliability and durability method estimation and the conclusions will give the practical solutions that must be necessary.

Keywords:

fatigue, vibrations, reliability, durability, Pelton runners', .

Code [ID]:

MOCM200107V01S01A0035 [0001172]


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