Siguran rad ventila za hlađenje
Rad prebacivanja različitih ventila je glavni posao u radu rashladnog sustava. Uloga ventila je da kontrolira i usmjerava protok i smjer rashladnog sredstva u sustavu, isključuje i vodi vezu između opreme i opreme ili opreme i vanjskog svijeta. Nepravilni rad ventila može uzrokovati nesigurne faktore ili uzrokovati nesreće, tako da se rad ventila mora strogo pridržavati pravila rada da bi se izbjegle nezgode. Ventili za hladno skladištenje uglavnom uključuju ventilske kuglice, ekspanzijske i sigurnosne ventile prema njihovoj upotrebi. Postoje dvije vrste kuglastih ventila: ravni - kroz ventile i ugaoni ventili. Siguran rad ventila trebao bi obaviti sljedeće radove:
1. The operator must be sure about the operation of the valve, and do not accidentally open other valves to cause human accidents.
2. When opening the suction valve of the compressor, the discharge valve of the condenser or the accumulator, it must be carried out slowly, and sometimes it should be started and stopped alternately to avoid the wet stroke accident of the compressor due to the excessively fast opening speed.
3. During the opening process of each valve, especially when it is close to the maximum opening, be sure to slowly pull the handwheel, and do not use excessive force, so as to avoid the phenomenon that the valve core is caught by the valve body and the valve is pulled off. When the valve is at the maximum opening (limited to the handwheel can not move), the handwheel should be rotated one or two times.
4. The operator should pay attention to the proper force during the closing of each valve, and not use too much force, so as not to damage the valve.
Mora znati! Siguran rad ventila za hlađenje
5.For pipes and equipment with liquid refrigerant, it is strictly forbidden to close the valves at both ends at the same time, so as to avoid the expansion of the liquid due to the absorption of external heat and the expansion of the liquid, which will lead to the accident of ammonia leakage in the pipe or equipment. Under normal circumstances, most liquid bursts crack at the valve. The correct way to prevent liquid explosion is to evacuate the liquid in the tube before closing the liquid tube valve. Under special circumstances, when the liquid pipe cannot be evacuated, only the valve at one end of the liquid pipe should be closed, so that the valve connected to the equipment at the other end is in the open state. If the compressor is completely stopped, the supply of the liquid reservoir should be closed first. Liquid valve, wait for the system and liquid pipe to be evacuated, and then close the main liquid supply valve to the regulating station.
U rashladnom sustavu treba obratiti posebnu pažnju na dijelove na kojima može doći do tečne eksplozije. Ovi dijelovi su: cjevovod za tekućinu između kondenzatora i rezervoara, cjevovod od rezervoara visokog - do ekspanzijskog ventila, cjevovod za tekućinu sa zatvorenim - ventilima na oba kraja, nivo tekućine mjerač visoko - tlačne opreme i tekućine između spremnika amonijaka, cijev za raspodjelu tekućine, cjevovoda ispod izlaznog ventila cirkulacijskog rezervoara do dvostrukog usisnog kraja amonijaka, cjevovoda za dovod tekućine amonijačna pumpa, cjevovod od rezervoara do hitnog odvoda amonijaka i svi cjevovodi koji mogu prouzrokovati tečnu eksploziju.
Mora znati! Siguran rad ventila za hlađenje
6. Valves that do not open and close for a long time should be regularly checked for opening and closing flexibility.
7. The safety valve in the refrigeration system must be calibrated once a year, and the safety net in question should be repaired or replaced in time.
8. Attach the red and yellow opening and closing plates made of colored steel plates to the handwheel of the valve to avoid misoperation as much as possible.
