Ngokufanelekile khetha i-sheath yangaphandle ye-fiber optical.Kunezinhlobo ezi-3 zamapayipi we-optical fiber sheath yangaphandle: ipayipi lepulasitiki izinto zokwenziwa eziphilayo, ipayipi le-aluminium, ipayipi lensimbi.Amapayipi epulasitiki ashibhile.Ukuze kuhlangatshezwane nezidingo zokuvikela i-UV zomgodla wamapayipi epulasitiki, okungenani izendlalelo ezimbili zezikhali kufanele zisetshenziswe.Ishubhu lepulasitiki i-OPGW lingakwazi ukumelana nokukhuphuka kwezinga lokushisa kwesikhashana okubangelwa umjikelezo omfushane wamanje <180℃;izindleko zeshubhu ye-aluminium ziphansi.Ngenxa yokungasebenzi kahle kwe-aluminium, ingakhuphula ikhono lezikhali ze-OPGW ukuze zimelane ne-short-circuit current.Ishubhu ye-Aluminium OPGW ingamelana nokukhuphuka kwezinga lokushisa kwesikhashana okubangelwa i-short-circuit current <300 ° C;ipayipi lensimbi engagqwali liyabiza.Kodwa-ke, ngenxa yodonga lweshubhu elincanyana leshubhu lensimbi, inani lama-optical fiber cores alayishwe eshubhuni lensimbi engagqwali ngaphansi kwesimo esifanayo se-cross-sectional lingaphezu kwalelo leshubhu lepulasitiki neshubhu le-aluminium, ngakho-ke izindleko zokubona ngakunye. umgogodla awuphezulu ngaphansi kwesimo se-multi-core.Ikhono lensimbi yepayipi i-OPGW ukumelana nokukhuphuka kwezinga lokushisa lesikhashana lingafinyelela ku-450 ℃.Abasebenzisi bangakhetha i-sheath yangaphandle ye-fiber optical ngokunengqondo ngokuya ngemibandela ethile yephrojekthi.
Lapho ushintsha intambo yaphansi yomugqa omdala ngekhebula ye-OPGW, i-OPGW enezici ezifanayo zomshini nezo zikagesi njengocingo lwasekuqaleni lwaphansi kufanele kukhethwe.Okusho ukuthi, imingcele yobubanzi obungaphandle be-OPGW, isisindo ngobude beyunithi ngayinye, amandla okugcina amandla, i-elastic modulus, i-coefficient yokwandisa umugqa, i-short-circuit current kanye neminye imingcele iseduze nemingcele ekhona yocingo lomhlabathi, ukuze ikhanda elikhona lombhoshongo lingakwazi. zingashintshwa, futhi nenani lemisebenzi yokwakha kabusha lingancishiswa.Ingaphinda iqinisekise ibanga eliphephile phakathi kwe-OPGW namakhondatha esigaba esikhona, futhi iqinisekise ukusebenza okuphephile kwesistimu yamandla.
Ukufakwa nokwakhiwa kwekhebula le-OPGW kufana nalokhu kweIkhebula le-ADSS, futhi i-hardware esetshenzisiwe icishe ifane, kodwa iphuzu lokulenga lihlukile.Ikhebuli ye-OPGW kufanele ifakwe endaweni yocingo lwaphansi olungaphezulu.Ukuma kwejoyinti elimaphakathi lomugqa wekhebula le-optical kumele liwele kumbhoshongo we-tension ngokusebenzisa ipuleti lokusabalalisa.
Ekukhetheni nasekusetshenzisweni kwezinhlobo ezingenhla zezintambo ze-optical, kuyadingeka futhi ukunaka amaphuzu alandelayo: khetha ikhebula le-optical lesakhiwo se-loose-sleeve, futhi ungasebenzisi i-tight-sleeve structure optical cable.Ngenxa yokuthi i-fiber ingaba nobude obuthile obudlulele ku-tube evulekile, ububanzi bokulawula buphakathi kuka-0.0% no-1.0%, futhi inani elijwayelekile lingu-0.5% kuya ku-0.7%.Lapho intambo ye-optical yeluliwe ngesikhathi sokwakhiwa noma ngaphansi kwesenzo samandla adonsela phansi nomoya, inqobo nje uma ubude obunwetshiwe bekhebula le-optical bungaphakathi kwebanga lobude obudlulele, i-fiber optical inamandla okucindezela futhi ingakubekezeli ukungezwani, ngaleyo ndlela iqinisekisa ukuthi izinga lokudlulisela le-fiber optical alithintwa ukungezwani.ithonya langaphandle.
1. Ukusebenzisa ubuchwepheshe obuphambili bokukhiqiza ishubhu yensimbi engenasici, ithubhu igcwele ama-compounds okuvimbela amanzi ukuze kuvikelwe ngokuphumelelayo i-fiber optical;
2. Ngokuthuthukisa ukuklama kwe-fiber optical ubude obuningi obungaphezu kweshubhu lensimbi engagqwali kanye nokusonteka kwe-cable core, i-fiber optical kukhebula optical ingathola ubude besibili obudlulele ukuze kuqinisekiswe ukuthi i-optical fibre ayigcizelelwa lapho Ikhebula le-OPGW lingaphansi kwengcindezi yokusebenza ephezulu;
3. Isakhiwo sihlangene, esingagcini nje ukunciphisa umthwalo weqhwa nomthwalo womoya, kodwa futhi siqinisekisa ukuthi ukushisa okukhiqizwa esimweni esifushane kulula ukuhlakazeka;
4. I-diameter yangaphandle ne-tensile unit weight ratio yekhebula le-OPGW ekhiqizwe i-GL iyafana nemininingwane yocingo oluvamile, futhi ingasetshenziswa ukufaka esikhundleni ngokuqondile ucingo lwasekuqaleni ngaphandle kokushintsha umugqa noma ukufaka umbhoshongo esikhundleni;
5. Njengoba ngokuyisisekelo ifana nocingo oluvamile lwangaphansi, ukumiswa kwentambo ye-OPGW kulula kakhulu;