Dej thaiv cov khoom siv cable
Cov khoom thaiv dej feem ntau tuaj yeem muab faib ua ob pawg: cov dej thaiv dej ua haujlwm thiab cov dej thaiv tsis muaj zog. Active dej thaiv siv cov dej-absorbing thiab o ntawm cov khoom siv. Thaum cov ntaub qhwv los yog sib koom ua ke puas lawm, cov ntaub ntawv no nthuav dav thaum sib cuag nrog dej, txwv tsis pub nws nkag mus rau hauv cable. Cov ntaub ntawv xws lidej absorbing expanding gel, dej thaiv daim kab xev, dej thaiv hmoov,dej thaiv cov xov paj, thiab dej thaiv kab. Passive water blocking, ntawm qhov tod tes, siv cov ntaub ntawv hydrophobic los thaiv cov dej sab nraum lub cable thaum lub plhaub puas lawm. Piv txwv ntawm cov khoom thaiv dej tsis muaj zog yog cov roj av uas muaj cov tshuaj nplaum, cov nplaum kub yaj, thiab cov tshuaj tua hluav taws kub.
I. Passive Water Blocking Materials
Kev ntim cov khoom thaiv dej tsis zoo, xws li roj av muab tshuaj, rau hauv cov cables yog thawj txoj hauv kev rau kev thaiv dej hauv cov hluav taws xob thaum ntxov. Txoj kev no zoo tiv thaiv dej los ntawm kev nkag mus rau hauv cable tab sis muaj cov nram qab no drawbacks:
1.Nws nce qhov hnyav ntawm lub cable;
2.Nws ua rau txo qis hauv kev siv hluav taws xob cable;
3.Petroleum muab tshuaj tua kab mob hnyav heev, ua rau kev tu tsis yooj yim;
4.Cov txheej txheem ua kom tiav yog ib qho nyuaj rau kev tswj, thiab tsis tiav filling tuaj yeem ua rau cov dej tsis zoo thaiv kev ua haujlwm.
II. Active dej thaiv cov ntaub ntawv
Tam sim no, cov dej thaiv cov ntaub ntawv siv hauv cov cables feem ntau yog cov ntaub thaiv dej, cov hmoov thaiv dej, cov kav dej thaiv, thiab cov xov paj dej. Muab piv rau cov roj av, cov khoom siv dej thaiv cov dej muaj cov yam ntxwv hauv qab no: kev nqus dej siab thiab qhov o siab. Lawv tuaj yeem nqus dej sai thiab o sai heev los tsim cov khoom zoo li gel uas thaiv cov dej infiltration, yog li ua kom muaj kev nyab xeeb ntawm cov kab hluav taws xob. Tsis tas li ntawd, cov khoom siv dej thaiv cov dej yog lub teeb, huv si, thiab yooj yim rau nruab thiab koom nrog. Txawm li cas los xij, lawv kuj muaj qee qhov tsis zoo:
1.Dej-thaiv hmoov yog qhov nyuaj rau txuas tusyees;
2.Dej-thaiv daim kab xev los yog xov paj tuaj yeem ua rau cov kab uas hla sab nraud tuaj yeem ua rau cov cua sov dissipation, ua kom cov kab hluav taws xob thermal aging, thiab limiting lub peev xwm kis tau tus mob;
3. Cov khoom siv dej thaiv cov khoom siv feem ntau kim dua.
Kev Ntsuam Xyuas Kev Tiv Thaiv Dej : Tam sim no, txoj hauv kev tseem ceeb hauv Suav teb los tiv thaiv dej los ntawm kev nkag mus rau txheej rwb thaiv tsev ntawm cov cables yog txhawm rau ua kom cov txheej txheem dej tsis zoo. Txawm li cas los xij, kom ua tiav cov dej thaiv hauv cov cables, peb yuav tsum tsis tsuas yog xav txog kev nkag mus rau hauv cov dej radial nkaus xwb tab sis kuj tseem tiv thaiv kom tsis txhob muaj qhov ntev ntawm cov dej thaum nws nkag mus rau hauv cable.
Polyethylene (Inner Sheath) Waterproof Isolation Layer: Extruding a polyethylene water-blocking layer, in together with a moisture-absorbing cushion layer (xws li water-blocking tape), tuaj yeem ua tau raws li qhov yuav tsum tau ua rau cov dej thaiv ntev ntev thiab kev tiv thaiv noo noo hauv cables ntsia hauv qhov chaw ntub dej. Cov txheej txheej polyethylene dej thaiv yog yooj yim los tsim thiab tsis xav tau cov khoom siv ntxiv.
Yas Coated Aluminium Daim Kab Xev Polyethylene Bonded Waterproof Isolation Layer: Yog tias cov cables tau teeb tsa hauv dej los yog qhov chaw ntub dej heev, lub peev xwm ntawm cov dej thaiv ntawm cov txheej txheem polyethylene yuav tsis txaus. Rau cov kab hluav taws xob uas xav tau ntau dua radial dej thaiv kev ua haujlwm, nws yog tam sim no ib txwm qhwv ib txheej ntawm txhuas-yas daim kab xev nyob ib ncig ntawm cov tub ntxhais cable. Cov foob no muaj ntau pua lossis ntau txhiab zaus dej-tiv taus dua li cov polyethylene ntshiab. Ntev npaum li lub seam ntawm daim kab xev sib xyaw ua ke tag nrho thiab kaw, dej nkag mus yuav luag tsis yooj yim sua. Aluminium-yas composite daim kab xev yuav tsum tau ib tug longitudinal wrapping thiab bonding txheej txheem, uas yuav tsum tau ntxiv peev thiab hloov khoom siv.
Hauv kev xyaum ua engineering, kev ua tiav kev thaiv dej ntev ntev yog qhov nyuaj dua li kev thaiv dej radial. Ntau txoj hauv kev, xws li kev hloov cov qauv ntawm tus neeg xyuas pib mus rau qhov tsim nruj nreem, tau siv, tab sis qhov cuam tshuam tau tsawg heev vim tias tseem muaj qhov khoob ntawm tus neeg xyuas pib uas tso cai rau cov dej ntws los ntawm kev ua haujlwm capillary. Txhawm rau kom ua tiav qhov kev thaiv dej ntev ntev, nws yog ib qho tsim nyog yuav tsum tau sau cov khoob hauv cov neeg xyuas pib nrog cov khoom thaiv dej. Ob theem ntawm kev ntsuas thiab cov qauv hauv qab no tuaj yeem siv los ua kom tiav cov dej thaiv qhov ntev hauv cov cables:
1.Siv cov kav dej thaiv cov kav dej. Ntxiv cov hlua thaiv dej, dej thaiv cov hmoov, dej thaiv cov xov paj, los yog qhwv cov ntaub thaiv dej nyob ib ncig ntawm tus neeg xyuas kom nruj.
2.Siv cov dej thaiv cov cores. Thaum lub sij hawm tsim cov txheej txheem cable, sau cov tub ntxhais nrog dej thaiv cov xov paj, qaum, los yog qhwv cov tub ntxhais nrog ib nrab conductive lossis insulating dej thaiv daim kab xev.
Tam sim no, qhov kev sib tw tseem ceeb hauv kev thaiv cov dej ntev ntev yog nyob rau hauv cov dej thaiv cov kav dej - yuav ua li cas sau cov dej thaiv cov khoom ntawm cov neeg ua dej num thiab cov dej thaiv cov dej uas siv tseem yog qhov tseem ceeb ntawm kev tshawb fawb.
Ⅲ. Xaus
Radial dej thaiv tshuab feem ntau yog siv cov txheej txheem dej thaiv kev sib cais qhwv ib ncig ntawm tus neeg xyuas pib cov txheej txheem rwb thaiv tsev, nrog cov txheej txheem dej noo-absorbing cushion ntxiv rau sab nraud. Rau nruab nrab-voltage cables, aluminium-yas composite daim kab xev feem ntau yog siv, thaum high-voltage cables feem ntau siv lead, txhuas, los yog stainless hlau hlau sealing tsho.
Longitudinal dej thaiv tshuab feem ntau tsom rau kev sau qhov khoob ntawm cov kab hluav taws xob nrog cov ntaub ntawv thaiv dej los thaiv cov dej ntws ntawm cov tub ntxhais. Los ntawm kev txhim kho thev naus laus zis tam sim no, sau nrog cov hmoov thaiv dej yog qhov zoo rau kev thaiv dej ntev ntev.
Kev ua tiav cov kab hluav taws xob tsis muaj dej yuav ua rau muaj kev cuam tshuam rau cov kab hluav taws xob cua sov thiab kev ua haujlwm zoo, yog li nws yog ib qho tseem ceeb uas yuav tsum xaiv lossis tsim cov qauv dej thaiv cov kab tsim nyog raws li cov kev xav tau ntawm engineering.
Post lub sij hawm: Feb-14-2025