Njengamanje, okuvame ukusetshenziswaInsulation impahlaizintambo ze-DC yi-polyethylene. Kodwa-ke, abacwaningi bayaqhubeka nokufuna izinto ezingase zibe khona zokufakwa ngaphakathi, njenge-polypropylene (PP). Noma kunjalo, ukusebenzisa i-PP njengento yokufaka ikhebula kuveza izinkinga ezimbalwa.
1. Izakhiwo Zemishini
Ukuze kuhlangatshezwane nezidingo eziyisisekelo zokuthutha, ukufakwa, nokusebenza kwezintambo ze-DC, izinto zokufakelwa kufanele zibe namandla athile okusebenza, okuhlanganisa ukuguquguquka okuhle, ukunwetshwa ngesikhathi sekhefu, kanye nokumelana nomthelela wezinga lokushisa eliphansi. Kodwa-ke, i-PP, njenge-polymer ecwebe kakhulu, ibonisa ukuqina ngaphakathi kwebanga lokushisa elisebenzayo. Ukwengeza, ikhombisa ukonakala kanye nokuba sengozini yokuqhekeka ezindaweni ezinezinga lokushisa eliphansi, yehluleka ukuhlangabezana nalezi zimo. Ngakho-ke, ucwaningo kufanele lugxile ekuqiniseni nasekuguquleni i-PP ukuze kubhekwane nalezi zinkinga.
2. Ukumelana Nokuguga
Ngesikhathi sokusetshenziswa isikhathi eside, ukuvala amakhebula e-DC kancane kancane kuyaguga ngenxa yemiphumela ehlanganisiwe yokuqina kwenkundla kagesi ephezulu kanye nokuhamba ngebhayisikili okushisayo. Lokhu kuguga kuholela ekunciphiseni kwezakhiwo zemishini kanye ne-insulation, kanye nokuncipha kwamandla okuqhekeka, ekugcineni kuthinte ukwethembeka nokuphila kwesevisi yekhebula. Ukuguga kokufakwa kwekhebula kuhlanganisa izici zemishini, zikagesi, ezishisayo, nezamakhemikhali, lapho ukuguga kukagesi nokushisayo kuyikhona okukhathaza kakhulu. Nakuba ukwengeza ama-antioxidants kungathuthukisa ukumelana kwe-PP ekugugeni kwe-oxidative eshisayo ngokwezinga elithile, ukungahambisani kahle phakathi kwama-antioxidants ne-PP, ukufuduka, nokungcola kwawo njengezithasiselo kuthinta ukusebenza kokufakwa kwe-PP. Ngakho-ke, ukuthembela kuphela kuma-antioxidant ukuze kuthuthukiswe ukumelana nokuguga kwe-PP akukwazi ukuhlangabezana nezidingo zesikhathi sokuphila kanye nokwethenjwa zokufakwa kwamakhebula e-DC, okudinga ucwaningo olwengeziwe mayelana nokulungisa i-PP.
3. Ukusebenza kwe-Insulation
Inkokhelo yesikhala, njengenye yezinto ezithonya ikhwalithi nempilo yeizintambo eziphezulu ze-DC, kuthinta kakhulu ukusatshalaliswa kwendawo kagesi wendawo, amandla e-dielectric, kanye nokuguga kwezinto zokufakelwa. Izinto zokuvikela izintambo zezintambo ze-DC zidinga ukucindezela ukunqwabelana kokushaja kwesikhala, ukunciphisa umjovo wezindleko zesikhala esifana ne-polarity, futhi zivimbele ukukhiqizwa kwezindleko zesikhala esingafani ne-polarity ukuvimbela ukuhlanekezela kwenkundla kagesi ngaphakathi kwendawo efakwa ugesi kanye ne-interface, ukuqinisekisa amandla okuphuka okungathinteki ubude besikhathi sekhebula.
Uma izintambo zikagesi ze-DC zihlala endaweni kagesi e-unipolar isikhathi eside, ama-electron, ama-ion, nama-ionization angcolile akhiqizwa ezintweni ze-electrode ngaphakathi kokufakwa kwe-insulation aba amashaji esikhala. Lezi zindleko zihamba ngokushesha futhi zinqwabelane zibe amaphakethe wokushaja, aziwa ngokuthi ukuqoqwa kweshaje yesikhala. Ngakho-ke, lapho usebenzisa i-PP kuzintambo ze-DC, ukuguqulwa kuyadingeka ukuze kucindezelwe ukukhiqizwa kokushaja nokunqwabelana.
4. I-Thermal Conductivity
Ngenxa ye-thermal conductivity engalungile, ukushisa okukhiqizwa ngesikhathi sokusebenza kwezintambo ze-DC ezisekelwe ku-PP akukwazi ukuhlakazeka ngokushesha, okuholela ekuhlukeni kwezinga lokushisa phakathi kwezinhlangothi zangaphakathi nangaphandle zesendlalelo se-insulation, okwenza insimu yokushisa engalingani. I-conductivity kagesi yezinto ze-polymer iyanda ngokukhuphuka kwamazinga okushisa. Ngakho-ke, uhlangothi olungaphandle lwesendlalelo sokufakwa kwe-insulation esine-conductivity ephansi luba lula ekuqongeleleni ukushaja, okuholela ekunciphiseni kwamandla kagesi. Ngaphezu kwalokho, ama-gradients okushisa abangela umjovo nokufuduka kwenani elikhulu lezindleko zesikhala, okuqhubeka nokuhlanekezela insimu kagesi. Uma izinga lokushisa likhulu, kulapho kuqoqwa khona ukushaja kwesikhala, okuqinisa ukuhlanekezela kwenkundla kagesi. Njengoba kuxoxiwe ngaphambili, izinga lokushisa eliphezulu, ukuqoqwa kweshaja yesikhala, nokuhlanekezelwa kwensimu kagesi kuthinta ukusebenza okuvamile nempilo yesevisi yezintambo ze-DC. Ngakho-ke, ukuthuthukiswa kokusebenza okushisayo kwe-PP kuyadingeka ukuze kuqinisekiswe ukusebenza okuphephile nempilo ende yesevisi yezintambo ze-DC.
Isikhathi sokuthumela: Jan-04-2024