Lub caij nyoog tshiab ntawm kev lag luam tsheb fais fab tshiab yog lub luag haujlwm ob yam: kev hloov pauv kev lag luam thiab kev txhim kho thiab kev tiv thaiv ib puag ncig huab cua, uas ua rau muaj kev txhim kho kev lag luam ntawm cov xov hluav taws xob siab thiab lwm yam khoom siv rau tsheb fais fab, thiab cov chaw tsim khoom cable thiab cov koom haum pov thawj tau nqis peev ntau lub zog rau kev tshawb fawb thiab kev txhim kho cov xov hluav taws xob siab rau tsheb fais fab. Cov xov hluav taws xob siab rau tsheb fais fab muaj cov kev cai ua tau zoo hauv txhua yam, thiab yuav tsum ua tau raws li tus qauv RoHSb, qib nplaim taws UL94V-0 cov kev cai thiab kev ua tau zoo mos. Daim ntawv no qhia txog cov ntaub ntawv thiab kev npaj cov xov hluav taws xob siab rau tsheb fais fab.
1. Cov khoom siv ntawm high voltage cable
(1) Cov khoom siv ntawm lub cable
Tam sim no, muaj ob yam khoom tseem ceeb ntawm cov txheej txheem cable conductor: tooj liab thiab txhuas. Ob peb lub tuam txhab xav tias txhuas lub hauv paus tuaj yeem txo lawv cov nqi tsim khoom ntau heev, los ntawm kev ntxiv tooj liab, hlau, magnesium, silicon thiab lwm yam khoom ntawm lub hauv paus ntawm cov khoom siv txhuas ntshiab, los ntawm cov txheej txheem tshwj xeeb xws li kev tsim thiab kev kho annealing, txhim kho kev ua hluav taws xob conductivity, kev ua haujlwm khoov thiab kev tiv thaiv corrosion ntawm cov cable, txhawm rau kom ua tau raws li qhov xav tau ntawm tib lub peev xwm thauj khoom, kom ua tiav tib yam li tooj liab lub hauv paus conductors lossis zoo dua. Yog li, tus nqi tsim khoom tau txuag tau zoo heev. Txawm li cas los xij, feem ntau cov tuam txhab tseem suav tias tooj liab yog cov khoom tseem ceeb ntawm cov txheej txheem conductor, ua ntej tshaj plaws, qhov tsis kam ntawm tooj liab yog qis, thiab tom qab ntawd feem ntau ntawm kev ua tau zoo ntawm tooj liab zoo dua li ntawm txhuas ntawm tib theem, xws li lub peev xwm nqa tam sim no loj, qhov poob qis voltage, kev siv hluav taws xob tsawg thiab kev ntseeg siab muaj zog. Tam sim no, kev xaiv cov conductors feem ntau siv lub teb chaws tus qauv 6 mos conductors (ib qho tooj liab hlau elongation yuav tsum ntau dua 25%, lub cheeb ntawm monofilament yog tsawg dua 0.30) kom ntseeg tau tias qhov mos thiab tawv ntawm tooj liab monofilament. Rooj 1 teev cov qauv uas yuav tsum tau ua tiav rau cov ntaub ntawv tooj liab uas siv ntau.
(2) Cov ntaub ntawv txheej rwb thaiv tsev ntawm cov cables
Ib puag ncig sab hauv ntawm cov tsheb fais fab yog qhov nyuaj, hauv kev xaiv cov ntaub ntawv rwb thaiv tsev, ntawm ib sab, kom ntseeg tau tias muaj kev nyab xeeb siv cov txheej rwb thaiv tsev, ntawm qhov tod tes, kom deb li deb tau xaiv cov khoom siv yooj yim thiab siv dav. Tam sim no, cov ntaub ntawv rwb thaiv tsev feem ntau yog polyvinyl chloride (PVC),polyethylene txuas (XLPE), roj hmab silicone, thermoplastic elastomer (TPE), thiab lwm yam, thiab lawv cov khoom tseem ceeb tau qhia nyob rau hauv Rooj 2.
Ntawm lawv, PVC muaj cov hlau lead, tab sis RoHS Directive txwv tsis pub siv cov hlau lead, mercury, cadmium, hexvalent chromium, polybrominated diphenyl ethers (PBDE) thiab polybrominated biphenyls (PBB) thiab lwm yam tshuaj lom neeg, yog li xyoo tas los no PVC tau hloov los ntawm XLPE, silicone roj hmab, TPE thiab lwm yam khoom siv zoo rau ib puag ncig.
(3) Cov khoom siv tiv thaiv kab hlau
Cov txheej tiv thaiv tau muab faib ua ob ntu: txheej tiv thaiv semi-conductive thiab txheej tiv thaiv braided. Qhov ntim resistivity ntawm cov khoom tiv thaiv semi-conductive ntawm 20 ° C thiab 90 ° C thiab tom qab laus yog qhov ntsuas tseem ceeb los ntsuas cov khoom tiv thaiv, uas txiav txim siab tsis ncaj qha lub neej kev pabcuam ntawm cov xov hluav taws xob siab. Cov ntaub ntawv tiv thaiv semi-conductive feem ntau suav nrog roj hmab ethylene-propylene (EPR), polyvinyl chloride (PVC), thiabpolyethylene (PE)raws li cov ntaub ntawv. Yog tias cov khoom siv raw tsis muaj qhov zoo dua thiab qib zoo tsis tuaj yeem txhim kho hauv lub sijhawm luv luv, cov koom haum tshawb fawb thiab cov chaw tsim khoom siv cable tsom mus rau kev tshawb fawb ntawm cov txheej txheem ua thiab cov qauv piv ntawm cov khoom siv tiv thaiv, thiab nrhiav kev tsim kho tshiab hauv qhov sib piv ntawm cov khoom siv tiv thaiv kom txhim kho kev ua tau zoo ntawm cov cable.
2. Cov txheej txheem npaj cov xov hluav taws xob siab
(1) Kev siv tshuab conductor strand
Cov txheej txheem yooj yim ntawm cable tau tsim los ntev lawm, yog li kuj muaj lawv tus kheej cov qauv txheem hauv kev lag luam thiab cov tuam txhab lag luam. Hauv cov txheej txheem ntawm kev kos hlau, raws li hom kev tsis sib haum ntawm ib txoj hlau, cov khoom siv stranding tuaj yeem muab faib ua tshuab tsis sib haum, tshuab tsis sib haum thiab tshuab tsis sib haum / tsis sib haum. Vim tias qhov kub siab ntawm cov tooj liab conductor, qhov kub thiab lub sijhawm annealing ntev dua, nws yog qhov tsim nyog los siv cov khoom siv tshuab tsis sib haum los nqa tawm kev rub tas mus li thiab kev rub tas mus li monwire los txhim kho qhov ntev thiab tawg ntawm kev kos hlau. Tam sim no, cov kab hluav taws xob polyethylene (XLPE) tau hloov tag nrho cov roj ntawv cable ntawm 1 thiab 500kV voltage theem. Muaj ob txoj hauv kev tsim cov hlau rau XLPE conductors: kev sib xyaw ua ke thiab kev sib ntswg hlau. Ntawm ib sab tes, lub hlau tub ntxhais tuaj yeem zam qhov kub thiab siab hauv cov kav dej hla-txuas kom nias nws cov khoom siv tiv thaiv thiab cov khoom siv rwb thaiv tsev rau hauv qhov sib txawv ntawm cov hlau thiab ua rau pov tseg; Ntawm qhov tod tes, nws kuj tseem tuaj yeem tiv thaiv dej nkag mus rau hauv tus neeg coj mus los kom ntseeg tau tias kev ua haujlwm zoo ntawm lub cable. Tus neeg coj tooj liab nws tus kheej yog cov qauv concentric stranding, uas feem ntau yog tsim los ntawm lub tshuab stranding ncej ib txwm muaj, lub tshuab stranding fork, thiab lwm yam. Piv nrog rau cov txheej txheem compaction voj voog, nws tuaj yeem ua kom tus neeg coj stranding puag ncig tsim.
(2) Cov txheej txheem tsim cov khoom siv rwb thaiv tsev XLPE cable
Rau kev tsim cov cable XLPE siab voltage, catenary dry cross-linking (CCV) thiab vertical dry cross-linking (VCV) yog ob txoj kev tsim.
(3) Cov txheej txheem extrusion
Ua ntej no, cov chaw tsim khoom siv cable siv cov txheej txheem extrusion thib ob los tsim cov cable rwb thaiv tsev, thawj kauj ruam tib lub sijhawm extrusion conductor shield thiab insulation txheej, thiab tom qab ntawd cross-linked thiab qhwv rau lub tais cable, muab tso rau ib lub sijhawm thiab tom qab ntawd extrusion rwb thaiv tsev shield. Thaum xyoo 1970, 1 + 2 peb txheej extrusion txheej txheem tau tshwm sim hauv cov hlau insulated core, tso cai rau sab hauv thiab sab nraud shielding thiab rwb thaiv tsev kom ua tiav hauv ib qho txheej txheem. Cov txheej txheem thawj zaug extrudes lub conductor shield, tom qab luv luv (2 ~ 5m), thiab tom qab ntawd extrudes lub rwb thaiv tsev thiab rwb thaiv tsev shield ntawm lub conductor shield tib lub sijhawm. Txawm li cas los xij, ob txoj kev thawj zaug muaj qhov tsis zoo loj heev, yog li thaum xyoo 1990, cov neeg muag khoom siv cable tsim khoom tau qhia txog peb txheej co-extrusion ntau lawm txheej txheem, uas extruded conductor shielding, rwb thaiv tsev thiab rwb thaiv tsev shield tib lub sijhawm. Ob peb xyoos dhau los, cov teb chaws txawv teb chaws kuj tau tsim lub taub hau extruder tshiab thiab lub phaj mesh nkhaus, los ntawm kev sib npaug ntawm lub taub hau qhov dej ntws kom txo tau cov khoom sib sau ua ke, txuas ntxiv lub sijhawm tsim khoom tas mus li, hloov qhov kev hloov pauv tsis tu ncua ntawm cov lus qhia ntawm lub taub hau tsim kuj tseem tuaj yeem txuag cov nqi downtime thiab txhim kho kev ua haujlwm zoo.
3. Xaus Lus
Cov tsheb fais fab tshiab muaj kev cia siab zoo thiab kev ua lag luam loj heev, xav tau ntau yam khoom siv hluav taws xob siab uas muaj peev xwm thauj khoom siab, tiv taus kub siab, tiv thaiv hluav taws xob, tiv taus khoov, yooj ywm, ua haujlwm ntev thiab lwm yam kev ua tau zoo heev rau hauv kev tsim khoom thiab nyob hauv kev ua lag luam. Cov khoom siv hluav taws xob siab thiab nws cov txheej txheem npaj muaj kev cia siab dav rau kev txhim kho. Lub tsheb fais fab tsis tuaj yeem txhim kho kev ua haujlwm ntau lawm thiab xyuas kom meej tias siv kev nyab xeeb yam tsis muaj hluav taws xob siab.
Lub sijhawm tshaj tawm: Lub Yim Hli-23-2024