Njengamanje, okuvame ukusetshenziswaizinto zokuvikela ukushisaI-polyethylene yezintambo ze-DC. Kodwa-ke, abacwaningi baqhubeka befuna izinto zokuvikela ezingaba khona, njenge-polypropylene (PP). Noma kunjalo, ukusebenzisa i-PP njengento yokuvikela izintambo kuletha izinkinga eziningana.
1. Izakhiwo Zemishini
Ukuze kuhlangatshezwane nezidingo eziyisisekelo zokuthuthwa, ukufakwa, kanye nokusebenza kwezintambo ze-DC, izinto zokuvikela kumele zibe namandla athile okusebenza, okuhlanganisa ukuguquguquka okuhle, ukunwebeka lapho kuphuka, kanye nokumelana nokushisa okuphansi. Kodwa-ke, i-PP, njenge-polymer ekristalu kakhulu, ibonisa ukuqina ngaphakathi kwebanga layo lokushisa lokusebenza. Ngaphezu kwalokho, ikhombisa ukuphuka kanye nokuthambekela ekuqhekekeni ezindaweni eziphansi lokushisa, yehluleka ukuhlangabezana nalezi zimo. Ngakho-ke, ucwaningo kumele lugxile ekuqiniseni nasekuguquleni i-PP ukuze kuxazululwe lezi zinkinga.
2. Ukumelana Nokuguga
Ngesikhathi sokusetshenziswa isikhathi eside, ukufakelwa kwekhebula le-DC kuyaguga kancane kancane ngenxa yemiphumela ehlanganisiwe yokuqina kwensimu kagesi ephezulu kanye nokujikeleza kokushisa. Lokhu kuguga kuholela ekunciphiseni kwezakhiwo zokwenziwa kanye nokufakelwa, kanye nokwehla kwamandla okuqhekeka, ekugcineni kuthinta ukuthembeka nokuphila kwenkonzo yekhebula. Ukuguga kokufakelwa kwekhebula kufaka phakathi izici zokwenziwa, zikagesi, ezishisayo, nezamakhemikhali, kanti ukuguga kukagesi nokushisa kuyizinto ezikhathaza kakhulu. Nakuba ukwengeza ama-antioxidants kungathuthukisa ukumelana kwe-PP nokuguga kwe-oxidative okushisayo ngezinga elithile, ukuhambisana okubi phakathi kwama-antioxidants ne-PP, ukufuduka, kanye nokungcola kwawo njengezithasiselo kuthinta ukusebenza kokufakelwa kwe-PP. Ngakho-ke, ukuthembela kuphela kuma-antioxidants ukuthuthukisa ukumelana nokuguga kwe-PP akukwazi ukuhlangabezana nezidingo zokuphila kanye nokuthembeka kokufakelwa kwekhebula le-DC, okudinga ucwaningo olwengeziwe mayelana nokushintsha i-PP.
3. Ukusebenza Kokuvimbela Ukushisa
Ukushaja isikhala, njengenye yezinto ezithonya ikhwalithi kanye nesikhathi sokuphilaizintambo ze-DC ezinama-voltage aphezulu, kuthinta kakhulu ukusatshalaliswa kwensimu kagesi yendawo, amandla e-dielectric, kanye nokuguga kwezinto zokuvikela. Izinto zokuvikela ugesi zezintambo ze-DC zidinga ukucindezela ukuqongelela kweshaja yesikhala, ukunciphisa ukufakwa kweshaja yesikhala esifana ne-polarity, futhi kuvimbele ukukhiqizwa kweshaja yesikhala esingafani ne-polarity ukuvimbela ukuphambuka kwensimu kagesi ngaphakathi kwe-insulation kanye ne-interfaces, ukuqinisekisa amandla okuphuka angathinteki kanye nokuphila kwekhebula.
Uma izintambo ze-DC zihlala ensimini kagesi e-unipolar isikhathi eside, ama-electron, ama-ion, kanye ne-ionization yokungcola ekhiqizwa ezintweni ze-electrode ngaphakathi kwe-insulation iba yizindleko zesikhala. Lawa mashaji ahamba ngokushesha futhi aqongeleleke kumaphakethe okushaja, aziwa ngokuthi ukuqongeleleka kweshaja yesikhala. Ngakho-ke, uma usebenzisa i-PP ezintanjeni ze-DC, kudingeka izinguquko ukuze kuncishiswe ukukhiqizwa nokuqongeleleka kweshaja.
4. Ukuqhuba Ukushisa
Ngenxa yokuguquguquka kokushisa okubi, ukushisa okukhiqizwa ngesikhathi sokusebenza kwezintambo ze-DC ezisekelwe ku-PP akukwazi ukunyamalala ngokushesha, okuholela ekuhlukeni kokushisa phakathi kwezinhlangothi zangaphakathi nezangaphandle zesendlalelo sokushisa, okudala insimu yokushisa engalingani. Ukuguquguquka kogesi kwezinto ze-polymer kuyanda ngokushisa okukhuphukayo. Ngakho-ke, uhlangothi lwangaphandle lwesendlalelo sokushisa olunokuguquguquka okuphansi luba sengozini yokuqongelela amashaja, okuholela ekunciphiseni kwamandla ensimu kagesi. Ngaphezu kwalokho, ukushintshashintsha kokushisa kubangela ukujova nokufuduka kwenani elikhulu lamacala esikhala, okuqhubeka nokuphambukisa insimu kagesi. Lapho i-gradient yokushisa inkulu, kulapho ukuqongelela amashaja esikhala kwenzeka khona, okwandisa ukuphambukisa kwensimu kagesi. Njengoba kuxoxwe ngakho ngaphambili, izinga lokushisa eliphezulu, ukuqongelela amashaja esikhala, kanye nokuphambukisa kwensimu kagesi kuthinta ukusebenza okuvamile kanye nokuphila kwenkonzo kwezintambo ze-DC. Ngakho-ke, ukuthuthukisa ukuguquguquka kokushisa kwe-PP kuyadingeka ukuqinisekisa ukusebenza okuphephile kanye nokuphila kwesikhathi eside kwenkonzo yezintambo ze-DC.
Isikhathi sokuthunyelwe: Jan-04-2024