ELECTROHYDRAULIC AUTOMATIC SYSTEM FOR DRIVING THE RAM LATCH OF A HEAD OF A CHARGING/DISCHARGING MACHINE

The invention relates to an automatic electrohydraulic system for supplying a hydraulic motor, according to the pressure stages, which drives the ram of the head of a Candu-type reactor charging/discharging machine. According to the invention, the system comprises two parallel-mounted normally open...

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Bibliographische Detailangaben
1. Verfasser:	COJOCARU VIRGIL ION
Format:	Patent
Sprache:	eng ; rum
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS FUNCTIONAL ELEMENTS OF SUCH SYSTEMS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS REGULATING TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to an automatic electrohydraulic system for supplying a hydraulic motor, according to the pressure stages, which drives the ram of the head of a Candu-type reactor charging/discharging machine. According to the invention, the system comprises two parallel-mounted normally open valves (PRV 4.1 and PRV 4.2) for reducing the pressure and an electrohydraulic distributor (SV 4.2) which selects the oil supply circuit corresponding to the valves (PRV 4.1 and PRV 4.2) for reducing the pressure, depending on the desired pressure stage, which is verified in a measuring point (V11) located on the circuit supplying another electrohydraulic distributor (SV 4.1) which carries out the passage of the driving oil towards a hydraulic motor corresponding to a ram, reversing the ram moving direction, the oil coming out from said last electrohydraulic distributor (SV 4.1) passing through a flow regulator (FRV 42) which regulates the ram motion speed. Invenţia se referă la un sistem automat electrohidraulic, de alimentare, în trepte de presiune, a unui motor hidraulic ce acţionează un cilindru împingător al capului unei maşini de încărcat/descărcat combustibil a reactorului de tip CANDU. Sistemul conform invenţiei are în componenţă două supape (PRV 4.1 şi PRV 4.2) de reducere a presiunii, normal deschise, montate în paralel, şi un distribuitor (SV 4.2) electrohidraulic ce selectează circuitul de alimentare cu ulei, aferent supapelor (PRV 4.1 şi PRV 4.2) de reducere a presiunii, în funcţie de treapta de presiune dorită, care este verificată într-un punct (V11) de măsură situat pe circuitul de alimentare a unui alt distribuitor (SV 4.1) electrohidraulic, ce realizează trecerea uleiului de acţionare spre un motor hidraulic aferent unui cilindru împingător, schimbând sensul de deplasare a cilindrului, uleiul care iese din acest ultim distribuitor (SV 4.1) electrohidraulic fiind trecut printr-un regulator (FRV 42) de debit, din care este reglată viteza de deplasare a cilindrului.