Ukuthenga i- i-vacuum emkhathini womliloe, kufanele uqale unqume amandla ayo

I-vacuum atmosphere yesithando somlilo isithando somlilo sokulawula okuzenzakalelayo okuzenzakalelayo imithetho elawulayo evame ukusetshenziswa ihlanganisa izindawo ezimbili, izindawo ezintathu, ukwabelana, ukwabelana okubalulekile kanye nokwaba umehluko obalulekile. Ukulawulwa kokushisa kwesithando somlilo kuyinkqubo enjalo yokusabela. Qhathanisa izinga lokushisa langempela lesithando somlilo kanye nezinga lokushisa lesithando somoya ukuze uthole iphutha. Ngemuva kokuthi iphutha licutshungulwa, isignali yokulawula itholakala ukuze kulungiswe amandla okushisa esithandweni sokumelana, bese ukulawulwa kokushisa kwesithando somlilo kuqedwa.

1. Umphumela wokulawula (ukulawula kwe-PID) ukhiqizwa ngokuya ngesabelo sephutha, ukuhlanganiswa nokuhlukaniswa. Kuyifomu lokulawula elisetshenziswa kakhulu ekulawuleni inqubo.

2, isimo sezikhundla ezimbili-inezimo ezimbili kuphela: vula futhi vala. Lapho izinga lokushisa lomlilo wesithando somlilo se-vacuum emoyeni liphansi kunenani elibekiwe, i-actuator ivuliwe ngokugcwele; lapho izinga lokushisa lomlilo lingaphezulu kwenani elibekiwe, i-actuator ivalwe ngokugcwele. I-actuator ngokuvamile i-contactor.

3. Isimo sezikhundla ezintathu-Inamanani amabili anikeziwe wemikhawulo ephezulu nephansi. Lapho izinga lokushisa esithandweni somlilo we-vacuum emoyeni liphansi kunenani elinikeziwe lomkhawulo ophansi, i-contactor ivuliwe ngokugcwele; lapho izinga lokushisa lomlilo liphakathi kwenani elinikeziwe lomkhawulo ophezulu kanye nomkhawulo ophansi, i-contactor ivuliwe ngokugcwele. Ingxenye ye-actuator ivuliwe; lapho izinga lokushisa lomlilo wesithando somoya lidlula inani elibekiwe lomkhawulo ophezulu, i-actuator ivalwe ngokugcwele. Isibonelo, uma i-heater ye-tubular iyisici sokushisa, isimo sendawo emithathu singasetshenziswa ukuqedela umehluko wamandla okushisa nawokugcina ukushisa.

Ngaphezu kwalokho, lapho uthenga isithando somlilo se-vacuum, kufanele uqale unqume amandla aso. Ngesikhathi esifanayo, kufanele ucabangele ukusebenza kahle kwayo kokushisa kukagesi kanye nesici samandla. Kunezindlela ezimbili zokunquma amandla.

Enye indlela yokulinganisa ukushisa. Ngokomthetho wokongiwa kwamandla, ukushisa okuphelele okudliwe yi-resistance vacuum atmosphere esithandweni silingana nokushisa okuphelele okukhishwa isici sokushisa kagesi. Ukushisa okuphelele okusetshenzisiwe kufaka phakathi ukushisa okusebenzayo kokushisisa insimbi kanye nokulahlekelwa ukushisa okuhlukahlukene kwesithando somlilo womkhathi. Ukushisa okuphelele kuguqulwa kube amandla aphelele, futhi ukusebenza kahle kokushisa kukagesi kuyacatshangelwa, bese kuphindaphindwa yi-coefficient yokugcina amandla. Le coefficient ilinganisela ukuthi ukukhiqiza kwesithando somlilo kungase kukhule futhi nokulahlekelwa ukushisa kungase kukhuphuke. I-coefficient yokugcina amandla iwumsebenzi oqhubekayo wesithando somlilo, kanye nokusebenza ngezikhathi ezithile Olunye uhlobo lwesithando somlilo siyindlela ye-empirical, enquma ngokuyinhloko amandla esithandweni ngokusho kwevolumu yesithando somlilo.