Intambo edibeneyo imfutshane kunentambo edibeneyo ye-polyethylene (XL-PE) egqunyiweyo. Iintambo ezidibeneyo zifanelekile kwiintambo zokuhambisa kunye nokusasaza ezine-voltage yamandla efikelela kwi-500KV kwaye ibandakanya i-500KV. Okwangoku, uninzi lweentambo ze-voltage ephezulu zigqunyiwe yi-polyethylene edibeneyo.
Iintambo ezidityanisiweyo zihlala zibhekisa kwiintambo ezenziwe ngezinto ezidityanisiweyo. Eyona nto isetyenziswa kakhulu yi-crosslinked polyethylene (XLPE). Inkqubo yokudibanisa kukwenza ulwakhiwo lwemolekyuli oluhambelanayo lwe-polyethylene (PE) ngendlela ethile yokucubungula ukwenza imo yesakhiwo somgca we-polyethylene odityanisiweyo. Ngenxa yoko, ubushushu bokusebenza obuvumelekileyo bexesha elide buphakanyiswa ukusuka kwi-70℃ ukuya kwi-90℃ (okanye ngaphezulu), kwaye ubushushu obuvumelekileyo be-short-circuit buphakanyiswa ukusuka kwi-140℃ ukuya kwi-250℃ (okanye ngaphezulu), nto leyo ephucula kakhulu ukusebenza kwangempela phantsi kwesiseko sokugcina ukusebenza kwayo kombane okugqwesileyo.
Kukho iingenelo ezininzi ze-XLPE. I-Wenchang inikezela ngeentlobo ezininzi ze-XLPE ozikhethileyo.
Ezifana ne-UL3265, UL3266, UL3167, UL3173, UL3182, UL3194, UL3195, UL3196, UL3199, UL3236 njl.
(1) Iipropati ezibalaseleyo zoomatshini nezomzimba, ukumelana okuhle nokuqhekeka koxinzelelo lokusingqongileyo, ukumelana okuhle nokuguguleka, ngaphezu kwePVC kunye nePE zinokumelana noxinzelelo oluqinileyo loomatshini.
(2) Ayimelani nezinyibilikisi ezahlukeneyo zeekhemikhali, izinzile kwiindidi ezahlukeneyo zezinto ezirhabaxa ezijikeleze.
(3) Ububanzi bangaphandle bocingo olugqunywe nge-polyolefin olufakwe imitha buncinci kunobocingo olugqunywe nge-polyvinyl chloride olufakwe imitha olunecandelo elifanayo leenkcukacha, olunokunciphisa ububanzi bombhobho osetyenziswa kulwakhiwo lwemibhobho, okanye luguge iingcingo ezingaphezulu phantsi kwemeko efanayo yobubanzi bombhobho, ngaloo ndlela kunciphisa iindleko zokufaka ulwakhiwo.
(4) Imveliso ye-insulated polyolefin ehlanganiswe ngemitha ilula kakhulu kunemveliso ye-insulated PVC, elungele ukufakwa nokuthuthwa, nto leyo enciphisa ubunzima babasebenzi kunye neendleko zokuhamba.
(5) Ubushushu obuphezulu obulinganisiweyo bentambo egqunyiweyo edityanisiweyo enobushushu obuphezulu bunokufikelela kwi-125℃ ngexesha lokusebenza ixesha elide, kwaye amandla okuthwala makhulu kunobo bentambo egqunyiweyo yePVC.
(6) Ayikhuphi iigesi ezirhabaxa okanye iigesi ezinobuthi ngexesha lokutsha, kwaye ayizukubangela umonakalo wesibini. Luhlobo olutsha lwemveliso yokukhusela okusingqongileyo ehambelana neemfuno zanamhlanje zokhuseleko lomlilo.
(7) Ukusebenza kakuhle kombane, ukumelana nobushushu kuphezulu kakhulu kunentambo yePVC, kwaye ilahleko ephakathi I-Angle tangent incinci kakhulu, ngokusisiseko ayitshintshi ngokutshintsha kobushushu.
Ixesha lokuposa: Julayi-15-2020