Ukwakheka kwekhebula kubonakala kulula, eqinisweni, ingxenye ngayinye yayo inenhloso yayo ebalulekile, ngakho-ke impahla ngayinye yezakhi kumele iqinisekiswe ngokucophelela lapho ikhiqiza ukuthembeka kwentambo eyenziwe ngalezi zinto zokwakha.
1. I-Conductor Okubonakalayo
Ngokomlando, izinto ezisetshenziselwa amandla amakhebula amakhebula ama-aluminium. USodium waphinde wazanywa kafushane. I-Copper ne-aluminium zinokuvuka okungcono kukagesi, futhi inani lethusi lincane lapho lidlulisela okwamanje, ngakho ububanzi obungaphandle komqhubi wethusi buncane kunalokho komqhubi we-aluminium kuncane kunalokho komqhubi we-aluminium. Intengo ye-aluminium iphansi kakhulu kunethusi. Ngaphezu kwalokho, ngoba ubuningi bethusi bukhulu kunele-aluminium, noma ngabe umthamo wamanje wokuthwala, isigaba somqalisi sikhulu kunalokho komqhubisi wethusi, kepha ikhebula le-aluminium lisekulula kunekhebula lomkhondo we-Copper.
2. Izinto zokufaka
Kunezinto eziningi zokufaka ezifaka amakhabethe ama-MV ezingazisebenzisa, noma kufaka phakathi izinto ezivuthiwe zezobuchwepheshe ezifakiwe, ezisetshenziswe ngempumelelo iminyaka engaphezu kwe-100. Namuhla, ukufakwa kwe-polymer kukhishwe kukwamukele kabanzi. Izinto zokwengeza ze-polymer ezifakiwe zifaka i-PE (LDPE ne-HDPE), i-XLPE, i-WTR-XLPE ne-EPR. Lezi zinto zokwakha zingu-thermoplastic kanye ne-thermosetting. I-Thermoplastic Materials Deform lapho ifudumele, kuyilapho izinto ze-thermoset zigcina ukwakheka kwazo emazingeni okushisa asebenza.
2.1. Ukufakwa kwamaphepha
Ekuqaleni kokusebenza kwabo, izintambo ezifakwe ephepheni zithwala umthwalo omncane futhi zigcinwe kahle. Kodwa-ke, abasebenzisi bamandla bayaqhubeka nokwenza ikhebula lithwele umthwalo ophakeme ngokwengeziwe, izimo zangempela zokusetshenziswa azisasebenzi ngezidingo zekhebula lamanje, khona-ke okuhlangenwe nakho okuhle kwangempela akukwazi ukumela ukusebenza kwekhebula kufanele kube kuhle. Eminyakeni yamuva nje, izintambo ezifakiwe zePhepho zisetshenziswe kakhulu.
2.2.Uhlobo lwenhlanzi
I-PVC isasetshenziswa njengezinto ezifakwayo ze-an-voltage 1KV cables futhi nayo iyinto evumayo. Kodwa-ke, ukusetshenziswa kwe-PVC ku-Cable Insulation kusheshelwa ngokushesha yi-XLPE, futhi uhlelo lokusebenza oluseSheath luzothathelwa indawo i-polyethylene (i-LLDPE), nezintambo ezingezona ze-PVC zinezindleko eziphansi zokujikeleza kwempilo.
2.3. Polyethylene (pe)
I-Polyethylene (LDPE ephansi yathuthukiswa ngawo-1930s futhi manje isetshenziswa njenge-resin eyisisekelo ye-polyethylene (XLPE) kanye nezinto ezingamelana namanzi esihlahla se-polyethylene (WTR-XLLE) izinto. Esimweni se-thermoplastic, izinga lokushisa elisebenzayo le-polyethylene lingu-75 ° C, eliphansi kunamazinga okushisa okusebenza kwamakhebuli afakwe iphepha (80 ~ 90 ° C). Le nkinga ixazululwe nge-advent of advent-intelyethylene (XLPE), engahlangana noma yedlule izinga lokushisa lensizakalo yezintambo ezifakwe ephepheni.
2.4.I-polyethylene exhumene nesiphambano (i-XLPE)
I-XLPE iyi-thermosetting impahla eyenziwe ngokuxuba i-polyethylene ephansi (LDPE) ene-ejenti yokuwela (efana ne-peroxide).
Ukushisa komqhudeli okuphezulu kwekhebula le-XLPE ku-90 ° C, isivivinyo esithe xaxa sifinyelela ku-140 ° C.
2.5. Isihlahla Sokumelana Namanzi Sixhumene ne-Polyethylene exhumene ne-polyethylene (WTR-XLPE)
Umcimbi wesihlahla samanzi uzonciphisa impilo yenkonzo yekhebula le-XLPE. Kunezindlela eziningi zokunciphisa ukukhula kwesihlahla samanzi, kepha omunye wamukelwa kakhulu ukusebenzisa izinto ezisetshenziswayo zokufakelwa ezenzelwe ukuvimbela ukukhula kwesihlahla samanzi, okubizwa ngokuthi isihlahla esingenamanzi esihlasela i-polyethylene wr-xlpe.
2.6. I-ethylene propylene rubber (EPR)
I-EPR iyinto etherkosetting impahla eyenziwe nge-ethylene, i-propylene (ngesinye isikhathi i-monomer yesithathu), futhi iphoyisa lama-monomer amathathu libizwa ngokuthi i-ethylene propylene diene ruble (i-EPDM). Ngaphezu kwebanga lokushisa elibanzi, i-EPR ihlala ihlala ithambile futhi inokumelana okuhle kwe-corona. Kodwa-ke, ukulahlekelwa kwe-dielectric of EPR kuphakeme kakhulu kunalokho kwe-XLPE ne-WTR-XLPE.
3. Inqubo yokufaka ubuvikeli
Inqubo yokuwela icacile ku-polymer esetshenzisiwe. Ukwenziwa kwama-polymers awela ama-polymers aqala nge-matrix polymer bese kubambe izitebele kanye nama-crosslinkars engeziwe ekwakheni ingxube. Inqubo yokuwela ingeza amanye amaphuzu okuxhuma kwisakhiwo samangqamuzana. Lapho exhumekile, i-polymer ama-molecular chain ihlala i-exstic, kepha ayikwazi ukuhlukaniswa ngokuphelele ku-fluid kuncibilike.
4. Ukuvikelwa kwesifundo kanye nezinto zokwakha ezivimbayo
Isendlalelo sokuvikelwa esiqhutshwa yisikhathi se-Semi-Shielding ikhishwe ngaphezulu komqhubi wesifundo kanye nokufakelwa ekuhlolweni kwensimu kagesi futhi aqukethe insimu kagesi ku-Cable. Lokhu okuqukethwe kuqukethe ibanga lobunjiniyela le-carbon emnyama yekhabhoni ukunika amandla ungqimba lwekhebula lokuthola ukuqina okuzinzile ngaphakathi kwebanga elidingekayo.
Isikhathi sePosi: APR-12-2024