Rwb thaiv tsev yog txheej tshwj xeeb uas pab tib neeg tiv thaiv cov cables, kav dej, thiab ntau ntxiv los ntawm kev puas tsuaj, yam tsis muaj qhov yooj yim los xav txog lub neej nrog kev nplij siab. Ua ntej nkag mus rau hauv lub tsev rau txhua tus, dej, cua sov lossis hluav taws xob taug kev mus ntev, thiab kev sib txuas lus feem ntau nyob hauv av, qhov twg, ntxiv rau qhov hnyav nyob rau saum toj, noo noo muaj qhov tsis zoo. Yog li ntawd, kev rwb thaiv tsev feem ntau yog kev tiv thaiv, thiab lub zog ntawm tag nrho cov qauv nyob ntawm nws lub zog.
Cable sheath thiab nws hom
Txheej txheej ntawm ib qho cable muaj ob peb txheej uas tuaj yeem muab kev tiv thaiv siab tshaj plaws. Nws tuaj yeem yog cov ntaub tshwj xeeb, PVC, roj hmab, hlau thiab nws cov alloys. Lub rwb thaiv tsev ntawm cov kab hluav taws xob los ntawm kev xa hluav taws xob teeb liab tuaj yeem muaj lub vijtsam ua los ntawm cov hlau mesh, ntawv ci, zaj duab xis polymer, qhov saum npoo uas yuav coated nrog cov hlau alloy. Davpolyvinyl chloride yog siv, uas yog siv los ua mos rwb thaiv tsev. Nws muaj 50% cov khoom yas hauv nws cov muaj pes tsawg leeg, vim qhov muaj peev xwm ntawm cov khoom siv los hlawv yog txo. Cov khoom siv no npog cov hluav taws xob hluav taws xob hluav taws xob hluav taws xob, nrog rau cov armored. Daim ntawv insulator yog siv rau hauv kev tsim hluav taws xob cables thiab yog tsim los ntawm unbleached cellulose sulfate. Polyethylene kuj tseem siv los ua hlau rwb thaiv tsev, los ntawm qhov hluav taws xob nrog ntau yam ntsuas yuav raug siv, txog li tsib puas kilovolts. Cov ntaub qhwv tshwj xeeb muaj cov cuab yeej zoo heev thiab kev tiv thaiv tam sim no. Cov khoom siv tau ruaj khov, txhim khu kev qha hauv kev ua haujlwm, thiab tshaj tag nrho lwm cov insulators ntawm thermal stability.
Metals-insulators
Hlau yog qhov kev xaiv zoo tshaj plaws rau kev tsim kom nruj thiab ua haujlwm rau cov dej noo, txhuas thiab txhuas yog suav tias yog qhov yooj yim tshaj plaws thiab kub-resistant, lawv tau dav siv los ua hlau rwb thaiv tsev. Lub thickness ntawm lub sheath nyob ntawm txoj kab uas hla ntawm lub cable, raws li zoo raws li tej yam kev mob nyob rau hauv uas nws yuav siv tau. Hauv kev tsim cov khoom siv hluav taws xob, cov hlau lead qib C-3 yog siv, qhov twg cov hlau ntshiab yog tsawg kawg yog 95.95%. Lub melting point yog 327.4 degrees Celsius, tab sis nrog rau tag nrho cov zoo, cov neeg kho tshuab lub zog ntawm cov khoom no yog tsawg, thiab cov fluidity yog nce, thiab qhov no yog ib tug loj drawback thaum ib tug cable uas tsuas muaj no sheath yog ntsia vertically. Cov khoom siv tshuaj lom neeg ntawm cov khoom siv tsawg, uas yog ua tiav los ntawm kev ua haujlwm siab corrosion. Cov khoom siv tsis zoo rau kev co, tshwj xeeb tshaj yog nyob rau hauv cov xwm txheej ntawm qhov kub thiab txias. Antimony additives yog ntxiv thaum lub sij hawm tsim khoom kom muaj kev ruaj ntseg. Aluminium rau kev tsim cov cable yog siv qib A-5, purity ntawm alloy yog 99.97%. Qhov ceev ntawm cov hlau yog 2700 kilograms ib cubic meter, thiab lub zog tensile yog 39.3-49.1 megapascals. Xws li lub hnab yog 2-2.5 npaug zog thiab 4 zaug sib zog dua txhuas. Nws yog vibration resistant thiab kuj muaj shielding zog. Tab sis nws tsis ruaj khov rau electrochemical corrosion, thiab cable ntau lawm technology yog ntau zog-intensive.
Tsis yog lub plhaub
Ntxiv rau lub plhaub, cov rwb thaiv tsev kuj tseem yog lub hauv ncoo, lub tsho tiv thaiv thiab lub npog tiv thaiv uas tiv thaiv kev puas tsuaj, yog tias cov khoom tsis muaj, ces lub cim muaj cov ntawv "G". Lub hauv ncoo yog ua los ntawm cov khoom siv fiber ntau thiab bitumen, nws nyob ntawm lub plhaub. Kuj tseem muaj ib qho kev txhawb zog ntawm lub hauv ncoo uas muaj lub voj voog ntawm ob daim kab xev yas, vim qhov kev tiv thaiv ntxiv tiv thaiv corrosion los yog stray tam sim no. Xws li ib tug cable muaj tsab ntawv "L" nyob rau hauv lub cim, ob txheej ntawm tapes raug xaiv "2L". Yog tias siv polyethylene hauv winding, lub npe yuav muaj "P", thiab yog PVC - "V". Yog hais tias lub cable tsis muaj cushion, nws yog cim "B". Lub thickness ntawm lub cushion yog nyob nruab nrab ntawm 1.5 thiab 3.4 millimeters.
Armor yuav tiv thaiv cov cable los ntawm kev puas tsuaj, nws tuaj yeem ua los ntawm ob daim kab xev steel nrog lub thickness ntawm 0.3 mus rau 0.8 hli, tab sis xws li armor yog siv nyob rau hauv kev tsim cov khoom uas yuav tsis.undergo stretching. Yog hais tias qhov nro yog tam sim no, ces lub cable yog tiv thaiv los ntawm galvanized steel ca los yog round hlau. Cov txheej tuab ntawm cov hlau tiaj tiaj yog los ntawm 1.5 mus rau 1.7 millimeters, thiab ib puag ncig yog los ntawm 4 mus rau 6 millimeters. Sab nraum, tej zaum yuav muaj ib tug tsis-combustible compound, uas yog hu ua "H", lub extruded polyethylene tiv thaiv hose yog cim "Shp", thiab PVC hose yog hu ua "Shv", qhov tsawg kawg nkaus thickness pib ntawm 1.9 mus rau 3 millimeters.
pib
Qhov tseem ceeb sib npaug, nrog rau cov kab hluav taws xob, yog qhov rwb thaiv tsev ntawm cov kav dej, uas pab lawv ua lawv txoj haujlwm ntev dua. Thermal rwb thaiv tsev feem ntau yog siv, uas yog tsom rau kev tiv thaiv kom tsis txhob khov los yog thaum tshav kub kub preservation ntau dua. Rwb thaiv tsev yog lub sijhawm tsis yog tsuas yog ua kom sov thiab tiv thaiv kev sib tsoo thaum khov, tab sis kuj txuag nyiaj. Kev xaiv ntawm insulators yog loj, nrog rau cov ntaub ntawv uas lawv tau ua, nws tag nrho yog nyob ntawm lub hom phiaj ntawm cov yeeb nkab.
Hom insulators
Mineral wool yog ib qho khoom siv hluav taws xob thoob ntiaj teb uas tso cai rau koj los tiv thaiv qhov txias txias, khaws cua sov, thiab tseem muaj cov khoom siv suab nrov. Cov khoom siv tsis hlawv, thiab bas alt yog siv rau nws cov khoom siv. Los ntawm saum toj no, paj rwb ntaub plaub tuaj yeem npog nrog ntawv ci lossis galvanized. Polyethylene los yog polyethylene ua npuas ncauj kuj tseem siv, nws muaj daim ntawv ntawm lub raj los yog canvas. Cov khoom siv tiv taus cov dej noo zoo thiab khaws cov cua sov, uas tau coj mus rau nws qhov chaw dav. Cov yeeb nkab muaj kev siv thev naus laus zis thiab ib txoj kab nruab nrab.
Yuav ua li cas ntxiv tau insulated?
Synthetic ua npuas ncauj roj hmab kuj tseem siv tau, uas tuaj yeem ua rau ntawm ob lub raj thiab daim hlau. Cov khoom tsis rot thiab tsis hlawv, noo noo tsis txaus ntshai rau nws thiab. Thermal xim, uas belongs rau cov kua rwb thaiv tsev, kuj yog siv, tsuas yog ib tug me me txheej yog txaus. Kev khiav hauj lwm kub yog los ntawm rho 60 mus rau ntxiv 200 degrees. Ib lub yeeb nkab coated nrog cov xim zoo li no tsis tsuas yog tiv thaiv, tab sis kuj muaj qhov zoo nkauj ntxim nyiam. Txhawm rau txuas cov khoom siv rau cov yeeb nkab, koj yuav xav tau cov khoom siv ntxiv, uas yog sawv cev los ntawm cov nplaum, staples, nplaum nplaum thiab lwm yam ntaub ntawv. Ua ntej insulating cov yeeb nkab, nws yog ib qho tsim nyog yuav tsum ua kom tiav kev ntsuas. Kev rwb thaiv tsev, raws li koj paub, tsis tshwm sim ntau, tab sis qhov me me ntawm nws tuaj yeem ua rau hnav sai.
