Njengamanje, okuvame ukusetshenziswaimpahla yokufakelwaKwezintambo ze-DC yi-polyethylene. Kodwa-ke, abacwaningi bafuna ngokuqhubekayo izinto ezingaba khona zokufakelwa, njenge-polypropylene (PP). Noma kunjalo, usebenzisa i-PP njengezinto zokufakwa kwentambo yekhebula ziveza izinkinga eziningana.
1. Izakhiwo zemishini
Ukuhlangabezana nezidingo eziyisisekelo zokuhamba, ukufakwa, kanye nokusebenza kwe-DC amakheshana, impahla yokufakelwa kumele ibe namandla athile okusebenza, kufaka phakathi ukuguquguquka okuhle, ukunyakaza kwekhefu lokuphumula. Kodwa-ke, i-PP, njenge-crystalline polymer kakhulu, kukhombisa ukuqina kwebanga lokushisa layo lokushisa. Ngokwengeziwe, kukhombisa ubucwebe kanye nokususwa kokuqhekeka ezindaweni zokushisa okuphansi, kwehluleka ukufeza lezi zimo. Ngakho-ke, ucwaningo kumele lugxile ekutholeni nasekuguquleni i-PP ukubhekana nalezi zinkinga.
2. Ukumelana nokuguga
Ngesikhathi sokusetshenziswa kwesikhathi eside, ukufakwa kwentambo ye-DC Cable kancane kancane ngenxa yemiphumela ehlanganisiwe yokuqina kwenkundla kagesi ephezulu kanye nokuhamba ngebhayisikobho okushisayo. Lokhu kuguga kuholela ekwehlisweni kwezakhiwo zemishini nokufakwayo, kanye nokwehla kwamandla okuqhekeka, ekugcineni kuthinta ukuthembeka kanye nempilo yenkonzo yekhebula. Ukuguga kokufakwa kwekhebula kufaka phakathi imishini, kagesi, okushisayo, kanye nezici zamakhemikhali, ngokuguga kukagesi nokushisa okuphathelene kakhulu. Yize ukungeza ama-antioxidants kungathuthukisa ukumelana kwe-PP kokuguga kwe-oxidative oxidative ngezinga elithile, ukuhambisana okungekuhle phakathi kwama-antioxidants kanye ne-pp, ukufuduka, nokungcola kwawo njengoba izengezo zithinta ukusebenza kwezithango ze-PP. Ngakho-ke, ukuncika kuphela kuma-antioxidants ukuthuthukisa ukumelana nokuguga kwe-PP akukwazi ukubhekana nezidingo zesikhathi sokuphila kanye nokuvuselelwa kwentambo ye-DC, kudinga ucwaningo olwengeziwe ngokushintsha i-PP.
3. Ukusebenza kokufakwa
Ukushaja kwesikhala, njengenye yezinto ezithonya ikhwalithi kanye nesikhathi sokuphila seIzintambo ze-DC eziphakeme ze-DC, kuthinta kakhulu ukusatshalaliswa kwensimu kagesi yendawo, amandla e-dielectric, kanye nokugunda kwezinto ezibonakalayo. Izinto zokufakwa kwezingubo ze-DC Izintambo ze-DC zidinga ukucindezela ukuqoqwa kwesikhala, zinciphise ukujova kwezindleko zesikhala sePolarity, futhi vimbela isizukulwane se-polarity space charges ukuvikela ukuhlanekezela kwensimu kagesi ukuvikela ukuhlanekezela kwensimu kagesi ukuvikela ukufakwa kwenkambu kagesi ngaphakathi kokufakelwa kanye nokuhlangana kwempilo ye-cable.
Lapho izintambo ze-DC zihlala zisenkambu kagesi engahambisani nesikhathi esengeziwe, ama-elektroni, ama-ion kanye nokungcola kwe-Ionization okukhiqizwe ezintweni ze-electrode ngaphakathi kokufakwa kwezindawo. Lawa macala asheshe athutha futhi aqongelele amaphakethe okukhokhiswa, abizwa ngokuthi ukunqwabelana kwenkokhiso yesikhala. Ngakho-ke, lapho usebenzisa i-PP kumakhekhe ama-DC, ukuguqulwa kuyadingeka ukucindezela ukukhiqizwa kwemali ekhokhwayo nokuqongelela.
4. Ukuvuselelwa okushisayo
Ngenxa yokuvuselelwa okungekho emthethweni, ukushisa okwenziwe ngesikhathi sokusebenza kwamakhebuli we-DP asuselwa ku-DC awakwazi ukuqeda ngokushesha, okuholela ekuhlumeni izinga lokushisa phakathi kwesendlalelo sangaphakathi, edala insimu yokushisa engalingani. Ukuvuka kukagesi kwezinto zokwenziwa kwama-polymer kukhuphuka ngamazinga okushisa akhuphukayo. Ngakho-ke, uhlangothi lwangaphandle longqimba lokufakelwa ngokuvunyelwa okuphansi luba nokuthambekela ukukhokhisa ukuqongelela, okuholela ekunciphiseni ukuqina kwensimu kagesi. Ngaphezu kwalokho, ama-gradient okushisa adala umjovo kanye nokufuduka kwenani elikhulu lamacala esikhala, asokezele futhi insimu kagesi. Lapho likhulisa izinga lokushisa, indawo ethe xaxa yenzeka, ukuqinisa ukuhlanekezela kwensimu kagesi. Njengoba kuxoxwe ngaphambili, izinga lokushisa eliphakeme, ukuqoqwa kwenkokhiso yesikhala, kanye nokuhlanekezela kwensimu kagesi kuthinta ukusebenza okujwayelekile kanye nempilo yenkonzo yamakhekhe ama-DC. Ngakho-ke, ukuthuthukisa ukuthuthuka okushisayo kwe-PP kuyadingeka ukuqinisekisa ukusebenza okuphephile kanye nempilo yenkonzo ye-DC.
Isikhathi sePosi: Jan-04-2024