Corneliu MĂLĂNCIOIU


25-42 REDUCTOARELE DE PRESIUNE DIN AMENAJĂRILE HIDROTEHNICE

THE PRESSURE REDUCERS FROM HYDROTECHNICAL APPLIANCES
This paper presents two types of pressure reducers which can be
used for different interior diameters of the pipes. There are presented all the
working characteristics for every reducer. The models presented are very
simple and inexpensive so that the final results could be very good.
Keywords: pressure reducers, working characteristics, hydro technical
appliances
Cuvinte cheie: reductoare de presiune, caracteristici de funcționare,
amenajări hidrotehnice
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25-34 CREŞTEREA SIGURANŢEI ÎN EXPLOATARE A BARAJULUI IZVORU MUNTELUI PRIN MODERNIZAREA ECHIPAMENTELOR HIDROMECANICE ALE GOLIRILOR DE FUND

INCREASING THE OPERATING SAFETY OF THE IZVORU
MUNTELUI DAM THROUGH THE HYDRO-MECHANICAL
EQUIPMENT MODERNIZATION OF THE BOTTOM OUTLETS
Bottom outlets are considered to be the most important hydraulic
structures in dams. They have an essential role in filling and emptying the
reservoir thus preventing flood risks, maintaining the safety operation, removing
sediments and allowing rehabilitation works. This paper presents the solutions
for increasing the operating safety of the Izvoru Muntelui dam through the
hydro-mechanical equipment modernization of the bottom outlets starting from
the operational issues that occurred over time. The solutions mainly aim to
eliminate the vibrations during the valves operation and to identify ways that will
allow the service and the maintenance of the bottom outlet valves. Fitting a
valve downstream, at the end of the bottom outlet will increase the safety
degree, allowing the operation of the existing valves in balanced pressure
conditions, thus avoiding undesired vibrations.
Keywords: bottom outlet, jaw valve, Venturi tube, cofferdam
Cuvinte cheie: golire de fund, vană cu fălci, tub Venturi, batardou
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