Thaum lub sij hawm kev teeb tsa thiab siv cov cable, nws raug kev puas tsuaj los ntawm cov neeg kho tshuab kev ntxhov siab, los yog siv lub cable ntev ntev nyob rau hauv ib qho chaw ntub dej thiab dej, uas yuav ua rau cov dej sab nraud maj mam nkag mus rau hauv lub cable. Nyob rau hauv qhov kev txiav txim ntawm hluav taws xob teb, qhov tshwm sim ntawm kev tsim cov ntoo dej ntawm cov kab hluav taws xob rwb thaiv tsev yuav nce. Cov ntoo dej uas tsim los ntawm electrolysis yuav tawg lub rwb thaiv tsev, txo qhov kev ua haujlwm ntawm kev rwb thaiv tsev tag nrho ntawm cov cable, thiab cuam tshuam rau lub neej kev pab cuam ntawm cable. Yog li ntawd, kev siv cov cables tsis muaj dej yog qhov tseem ceeb heev.
Cable waterproof feem ntau txiav txim siab dej seepage raws li cov kev taw qhia ntawm cable conductor thiab raws radial kev taw qhia ntawm lub cable los ntawm lub cable sheath. Yog li ntawd, lub radial waterproof thiab longitudinal water-blocking qauv ntawm cable yuav siv tau.
1.Cable radial waterproof
Lub hom phiaj tseem ceeb ntawm radial waterproofing yog los tiv thaiv cov dej nyob ib puag ncig sab nraud ntws mus rau hauv lub cable thaum siv. Waterproof qauv muaj cov kev xaiv hauv qab no.
1.1 Polyethylene sheath waterproof
Polyethylene sheath waterproof tsuas yog siv tau rau cov kev cai dav dav ntawm cov dej tsis zoo. Rau cov cables rau hauv dej kom ntev, kev ua haujlwm tsis zoo ntawm polyethylene sheathed waterproof fais fab cables yuav tsum tau txhim kho.
1.2 Hlau sheath waterproof
Radial waterproof qauv ntawm low-voltage cables nrog rated voltage ntawm 0.6kV / 1kV thiab saum toj no feem ntau pom tau los ntawm cov txheej tiv thaiv txheej thiab sab hauv longitudinal wrapping ntawm ob-sided aluminium-yas composite siv. Nruab nrab voltage cables nrog ntsuas voltage 3.6kV / 6kV thiab saum toj no yog radial waterproof nyob rau hauv kev sib koom tes ntawm txhuas-yas composite siv thiab semi-conductive kuj hose. Cov kab hluav taws xob siab siab nrog cov qib siab dua tuaj yeem ua dej tsis zoo nrog cov hlau sheaths xws li txhuas sheaths lossis corrugated aluminium sheaths.
Comprehensive sheath waterproof yog tsuas yog siv rau cable trench, ncaj qha faus dej hauv av thiab lwm qhov chaw.
2. Cable vertically waterproof
Longitudinal dej tsis kam tuaj yeem suav hais tias ua rau tus neeg xyuas pib cable thiab rwb thaiv tsev muaj cov nyhuv dej tsis kam. Thaum cov txheej tiv thaiv sab nrauv ntawm lub cable raug puas vim yog sab nraud quab yuam, cov dej noo ib puag ncig los yog noo noo yuav nkag mus rau vertically raws li tus neeg xyuas pib cable thiab rwb thaiv tsev kev taw qhia. Txhawm rau kom tsis txhob ya raws lossis ya raws kev puas tsuaj rau lub cable, peb tuaj yeem siv cov txheej txheem hauv qab no los tiv thaiv cable.
(1)Dej thaiv daim kab xev
Ib qho dej-resisting expansion cheeb tsam yog ntxiv ntawm insulated hlau core thiab aluminium-yas composite sawb. Cov dej thaiv cov kab xev yog qhwv ib ncig ntawm cov hlua hluav taws xob lossis cov tub ntxhais cable, thiab qhov qhwv thiab npog tus nqi yog 25%. Cov dej thaiv daim kab xev nthuav dav thaum nws ntsib dej, uas ua rau kom nruj ntawm cov dej thaiv cov kab xev thiab cable sheath, thiaj li ua tiav cov dej thaiv cov nyhuv.
(2)Semi-conductive dej thaiv daim kab xev
Semi-conductive dej thaiv daim kab xev yog dav siv nyob rau hauv nruab nrab voltage cable, los ntawm wrapping lub Semi-conductive dej thaiv daim kab xev nyob ib ncig ntawm lub hlau shielding txheej, mus cuag lub hom phiaj ntawm longitudinal dej tsis kam ntawm cable. Txawm hais tias cov dej thaiv cov nyhuv ntawm cov cable tau zoo dua qub, cov kab hluav taws xob sab nraud ntawm cov kab hluav taws xob nce ntxiv tom qab lub cable tau qhwv ib ncig ntawm cov ntaub thaiv dej.
(3) Kev thaiv dej txhaws
Cov dej thaiv cov khoom ntim khoom feem ntau yogdej thaiv cov xov paj(kab) thiab dej thaiv hmoov. Cov dej thaiv cov hmoov feem ntau yog siv los thaiv cov dej ntawm cov neeg xyuas pib sib tw. Thaum cov dej thaiv cov hmoov tsis yooj yim rau txuas rau tus neeg xyuas pib monofilament, cov dej nplaum zoo tuaj yeem siv rau sab nraud ntawm tus neeg xyuas pib monofilament, thiab cov dej thaiv cov hmoov tuaj yeem qhwv sab nraum tus neeg xyuas pib. Dej thaiv cov xov paj (txoj hlua) feem ntau yog siv los sau qhov khoob ntawm nruab nrab-siab peb-core cables.
3 General qauv ntawm cable dej tsis kam
Raws li qhov sib txawv ntawm kev siv ib puag ncig thiab cov kev xav tau, cov qauv dej tiv thaiv kab hluav taws xob suav nrog cov qauv hluav taws xob tsis zoo, qhov ntev (suav nrog radial) cov qauv dej tsis kam thiab cov qauv dej tsis sib haum. Cov dej thaiv cov qauv ntawm peb-core nruab nrab voltage cable yog coj los ua piv txwv.
3.1 Radial waterproof qauv ntawm peb-core medium voltage cable
Radial waterproofing ntawm peb-ntxhais nruab nrab voltage cable feem ntau siv Semi-conductive dej thaiv daim kab xev thiab ob-sided yas coated txhuas daim kab xev kom ua tiav cov dej ua haujlwm. Nws cov qauv yog: conductor, conductor shielding txheej, rwb thaiv tsev, rwb thaiv tsev shielding txheej, hlau shielding txheej (copper daim kab xev los yog tooj liab hlau), zoo tib yam filling, semi-conductive dej thaiv daim kab xev, ob-sided yas coated txhuas daim kab xev longitudinal pob, txheej sheath .
3.2 Peb-core nruab nrab voltage cable longitudinal dej tsis kam qauv
Peb-core nruab nrab voltage cable kuj siv semi-conductive dej thaiv daim kab xev thiab ob-sided yas coated txhuas daim kab xev kom ua tiav cov dej ua haujlwm. Tsis tas li ntawd, cov hlua thaiv dej yog siv los sau qhov sib txawv ntawm peb cov tub ntxhais cables. Nws cov qauv yog: tus neeg xyuas pib, tus neeg xyuas pib shielding txheej, rwb thaiv tsev, rwb thaiv tsev thaiv txheej, semi-conductive dej thaiv daim kab xev, hlau thaiv txheej (tooj liab daim kab xev los yog tooj liab hlau), dej thaiv hlua txhaws, semi-conductive dej thaiv daim kab xev, txheej sheath.
3.3 Peb-core nruab nrab voltage cable tag nrho-round dej tsis kam qauv
Lub cable tag nrho cov dej thaiv cov qauv xav kom tus neeg xyuas pib kuj muaj cov dej thaiv cov nyhuv, thiab ua ke nrog cov kev cai ntawm radial waterproof thiab longitudinal water blocking, kom ua tiav tag nrho cov dej thaiv. Nws cov qauv yog: dej thaiv cov neeg xyuas pib, tus neeg xyuas pib shielding txheej, rwb thaiv tsev, rwb thaiv tsev thaiv txheej, semi-conductive dej thaiv daim kab xev, hlau thaiv txheej (tooj liab daim kab xev los yog tooj liab hlau), dej thaiv hlua filling, semi-conductive dej thaiv kab xev , ob-sided yas coated aluminium daim kab xev longitudinal pob, txheej sheath.
Peb-core water-blocking cable tuaj yeem txhim kho kom zoo rau peb ib leeg-core water-blocking cable qauv (zoo ib yam li peb-core aerial insulated cable qauv). Ntawd yog, txhua tus tub ntxhais cable yog thawj zaug ua raws li ib leeg-core water-blocking cable qauv, thiab tom qab ntawd peb cov cables sib cais yog twisted los ntawm cable los hloov peb-core water-blocking cable. Nyob rau hauv txoj kev no, tsis tsuas yog txhim kho cov dej tsis kam ntawm cable, tab sis kuj muab kev yooj yim rau kev ua cov cable thiab tom qab kev teeb tsa thiab tso.
4.Kev ceev faj rau kev ua dej thaiv cov kab txuas txuas
(1) Xaiv cov khoom sib koom tsim nyog raws li cov lus qhia tshwj xeeb thiab cov qauv ntawm cov kab hluav taws xob kom ntseeg tau tias qhov zoo ntawm cov khoom sib txuas.
(2) Tsis txhob xaiv cov hnub los nag thaum ua dej thaiv cov kab txuas txuas. Qhov no yog vim hais tias cov dej cable yuav cuam tshuam rau lub neej kev pab cuam ntawm cable, thiab txawm tias luv luv Circuit Court raug mob yuav tshwm sim nyob rau hauv loj heev.
(3) Ua ntej ua dej-resistant cable sib txuas, ua tib zoo nyeem cov chaw tsim khoom cov lus qhia cov khoom.
(4) Thaum nias cov yeeb nkab tooj liab ntawm qhov sib koom ua ke, nws tsis tuaj yeem nyuaj heev, tsuav nws yog nias rau txoj haujlwm. Lub ntsej muag tooj liab tom qab crimping yuav tsum tau ua ntaub ntawv tiaj tus yam tsis muaj burrs.
(5) Thaum siv lub tshuab hluav taws xob los ua kom lub tshuab hluav taws xob sib txuas ua ke, ua tib zoo mloog rau lub tshuab hluav taws xob txav mus los, tsis yog nyob rau hauv ib qho kev taw qhia tas li blowtorch.
(6) Qhov loj ntawm qhov txias shrink cable sib koom ua ke yuav tsum ua kom nruj raws li cov lus qhia kos duab, tshwj xeeb tshaj yog thaum rho tawm cov kev txhawb nqa hauv cov yeeb nkab tshwj xeeb, nws yuav tsum tau ceev faj.
(7) Yog tias tsim nyog, cov sealant tuaj yeem siv rau ntawm cov hlua khi hlua khi thiab txuas ntxiv txhim kho lub peev xwm tsis muaj dej ntawm lub cable.
Post lub sij hawm: Aug-28-2024