Vloga glavnih komponent hladilnega sušilnika
1. hladilni kompresor
Hladilni kompresorji so srce hladilnega sistema, večina kompresorjev pa danes uporablja hermetične vzajemne kompresorje. Raising the refrigerant from low to high pressure and circulating the refrigerant continuously, the system continuously discharges internal heat to an environment above the system temperature.
2. kondenzator
The function of the condenser is to cool the high-pressure, superheated refrigerant vapor discharged by the refrigerant compressor into a liquid refrigerant, and its heat is taken away by the cooling water. To omogoča, da se postopek hlajenja neprekinjeno nadaljuje.
3. Uparjalnik
4. termostatski ekspanzijski ventil (kapilarno)
Termostatski ekspanzijski ventil (kapilarno) je mehanizem za hranjenje hladilnega sistema. V sušilniku hladilnika se dovajanje hladilnega sredstva uparjalnika in njegovega regulatorja realizira z mehanizmom za plin. Mehanizem za plin omogoča, da hladilnik vstopi v uparjalnik iz visokotemperaturne in visokotlačne tekočine.
5. Toplotni izmenjevalec
The vast majority of refrigeration dryers have a heat exchanger, which is a heat exchanger that exchanges heat between air and air, generally a tubular heat exchanger (also known as a shell and tube heat exchanger). The main function of the heat exchanger in the refrigeration dryer is to “recover” the cooling capacity carried by the compressed air after being cooled by the evaporator, and use this part of the cooling capacity to cool the compressed air at a higher temperature carrying a large amount of water vapor (that is, the saturated compressed air discharged from the air compressor, cooled by the rear cooler of the air compressor, and then separated by air and water is generally above 40 ° C), s čimer se zmanjša ogrevalna obremenitev hladilnega in sušilnega sistema ter doseže namen varčevanja z energijo. On the other hand, the temperature of low-temperature compressed air in the heat exchanger is recovered, so that the outer wall of the pipeline transporting compressed air does not cause “condensation” phenomenon due to the temperature below the ambient temperature. In addition, after the temperature of the compressed air rises, the relative humidity of the compressed air after drying is reduced (generally less than 20%), which is beneficial to prevent the rust of the metal. Some users (eg with air separation plants) need compressed air with low moisture content and low temperature, so the refrigeration dryer is no longer equipped with a heat exchanger. Ker toplotni izmenjevalec ni nameščen, hladnega zraka ni mogoče reciklirati in toplotna obremenitev uparjalnika se bo močno povečala. In this case, not only does the power of the refrigeration compressor need to be increased to compensate for energy, but also the other components of the entire refrigeration system (evaporator, condenser and throttling components) need to be increased accordingly. From the perspective of energy recovery, we always hope that the higher the exhaust temperature of the refrigeration dryer, the better (high exhaust temperature, indicating more energy recovery), and it is best that there is no temperature difference between the inlet and outlet. But in fact, it is not possible to achieve this, when the air inlet temperature is below 45 °C, it is not uncommon for the inlet and outlet temperatures of the refrigeration dryer to differ by more than 15 °C.
Obdelava stisnjenega zraka
Vzdrževanje in pregled: Vzdržujte temperaturo rosa v hladilniku nad ničlo.
Za zmanjšanje temperature stisnjenega zraka mora biti tudi temperatura izhlapevanja hladilnega sredstva zelo nizka. When the refrigeration dryer cools the compressed air, there is a layer of film-like condensate on the surface of the fin of the evaporator liner, if the surface temperature of the fin is below zero due to the decrease in the evaporation temperature, the surface condensate may freeze, at this time:
A. Due to the attachment of a layer of ice with a much smaller thermal conductivity on the surface of the inner bladder fin of the evaporator, the heat exchange efficiency is greatly reduced, the compressed air can not be fully cooled, and because of the insufficient heat absorption, the refrigerant evaporation temperature may be further reduced, and the result of such a cycle will inevitably bring many adverse consequences to the refrigeration system (such as “liquid stiskanje ”);
1. Razlika v tlaku med dovodnim in iztokom stisnjenega zraka ne presega 0,035MPA;
2. merilnik tlaka izhlapevanja 0,4MPA-0,5MPa;
3. Merilnik visokega tlaka 1,2MPA-1.6MPA
4.
Izdaja obratovanja
1 Preverite pred zagonom
1.2 Odprti se hladilni vodni ventil, tlak vode mora biti med 0,15-0,4MPa, temperatura vode pa pod 31ċ;
1.3 Merilnik visokega tlaka hladilnega sredstva in meter z nizkim tlakom hladilnega sredstva na armaturni plošči imata indikacije in so v osnovi enaki;
2 Zagon postopek
2.1 Pritisnite gumb Start, kontaktor AC se zavleče 3 minute in se nato zažene, kompresor hladilnega sredstva pa začne zagnati;
2.5 Preverite, ali je drenaža samodejnega odtoka normalna;
2.6 Redno preverjajte delovne pogoje sušilnika, zabeležite tlak zračnega dovoda in odtok, visok in nizki tlak hladnega premoga itd.
3 postopek zaustavitve;
3.1 Zaprite zračni ventil;
3.3 Pritisnite gumb STOP.
4 previdnostni ukrepi
4.1 Izogibajte se teku dolgo brez obremenitve.
4.2 Ne zaženite kompresorja hladilnega sredstva neprekinjeno in število štartov in zaustavitve na uro ne sme biti večje od 6 -krat.
4.3 Če želite zagotoviti kakovost oskrbe s plinom, ne pozabite upoštevati vrstnega reda za začetek in ustavljanje.
4.3.1 Začetek: Pred odpiranjem zračnega kompresorja ali dovodnega ventila pustite sušilnik 3-5 minut.
4.3.2 Izklop: Najprej izklopite zračni kompresor ali izhodni ventil in nato izklopite sušilnik.
4.5 Zračni tlak ne sme presegati 0,95MPA.
4.6 Temperatura dovodnega zraka ne presega 45 stopinj.
4.7 Temperatura hladilne vode ne presega 31 stopinj.
4.8 Prosimo, ne vklopite, ko je temperatura okolice nižja od 2ċ.
4.9 Nastavitev časovnega releja v električni krmilni omari ne sme biti manjša od 3 minute.
4.10 Splošna operacija Dokler nadzorujete gumbe »Start« in »Stop«
4.11 The air-cooled refrigeration dryer cooling fan is controlled by the pressure switch, and it is normal for the fan not to turn when the refrigeration dryer works at a low ambient temperature. Ko se visok tlak hladilnega sredstva poveča, se ventilator samodejno zažene.
Čas objave: avgust-26-2023