1 Kev Taw Qhia
Txhawm rau ua kom cov kab sib txuas ntev ntawm fiber ntau optic thiab tiv thaiv dej thiab ya raws los ntawm kev nkag mus rau hauv lub cable lossis hlws ris lub thawv thiab corroding cov hlau thiab fiber ntau, uas ua rau hydrogen puas, fiber ntau tawg thiab poob qis hauv hluav taws xob rwb thaiv tsev kev ua tau zoo, cov hauv qab no yog cov txheej txheem. Feem ntau siv los tiv thaiv dej thiab noo noo:
1) Sau rau hauv lub cable nrog thixotropic roj, nrog rau cov dej-repellent (hydrophobic) hom, dej o hom thiab tshav kub expansion hom thiab hais txog. Cov khoom siv no yog cov ntaub ntawv oily, sau cov nyiaj ntau, tus nqi siab, yooj yim rau kev ua qias tuaj ib puag ncig, nyuaj rau kev ntxuav (tshwj xeeb tshaj yog nyob rau hauv cable splicing nrog cov kuab tshuaj los ntxuav), thiab lub cable nws tus kheej hnyav heev.
2) Nyob rau hauv lub puab thiab sab hauv sheath ntawm kev siv cov kub yaj nplaum nplaum dej barrier nplhaib, txoj kev no yog inefficient, complex txheej txheem, tsuas yog ob peb manufacturers ua tau. 3) Kev siv qhuav nthuav dav ntawm cov khoom thaiv dej (dej-absorbing expansion hmoov, dej thaiv kab xev, thiab lwm yam). Txoj kev no yuav tsum muaj cov cuab yeej siv siab, siv cov khoom siv, tus nqi siab, tus kheej qhov hnyav ntawm cable kuj hnyav heev. Nyob rau hauv xyoo tas los no, cov qauv "dry core" tau nkag mus rau hauv cov khoom siv kho qhov muag, thiab tau ua haujlwm zoo rau txawv teb chaws, tshwj xeeb tshaj yog hauv kev daws cov teeb meem ntawm tus kheej hnyav thiab txoj kev sib txuas ntawm cov tub ntxhais loj ntawm cov khoom siv kho qhov muag muaj qhov zoo sib xws. Cov khoom thaiv dej siv hauv qhov "dry core" cable yog cov xov paj thaiv dej. Cov xov paj thaiv dej tuaj yeem nqus dej sai sai thiab o tuaj yeem tsim cov gel, thaiv qhov chaw ntawm cov kab dej hauv dej, yog li ua tiav lub hom phiaj ntawm kev thaiv dej. Tsis tas li ntawd, cov xov paj thaiv cov dej tsis muaj cov tshuaj oily thiab lub sijhawm xav tau los npaj cov splice tuaj yeem txo qis heev yam tsis xav tau cov ntaub so, cov kuab tshuaj thiab cov tshuaj ntxuav. Txhawm rau kom tau txais cov txheej txheem yooj yim, kev tsim kho yooj yim, txhim khu kev qha thiab cov khoom siv dej thaiv cov nqi qis, peb tau tsim ib hom tshiab ntawm optical cable dej thaiv cov xov paj-dej-thaiv swellable yarn.
2 Cov dej thaiv cov ntsiab lus thiab cov yam ntxwv ntawm cov xov paj thaiv dej
Cov dej thaiv kev ua haujlwm ntawm cov dej thaiv cov xov paj yog siv lub cev tseem ceeb ntawm cov dej thaiv cov xov paj los tsim cov ntim loj ntawm cov gel (dej nqus tau mus txog kaum ob npaug ntawm nws lub ntim, xws li hauv thawj feeb ntawm dej. tuaj yeem nthuav dav ntawm li 0. 5mm mus txog 5. 0mm txoj kab uas hla), thiab cov dej tuav lub peev xwm ntawm cov gel yog qhov muaj zog heev, tuaj yeem tiv thaiv kev loj hlob ntawm tsob ntoo dej, yog li tiv thaiv dej los ntawm kev txuas ntxiv mus rau hauv thiab sib kis, mus rau ua tiav Lub hom phiaj ntawm dej tsis kam. Raws li fiber ntau optic cable yuav tsum tiv taus ntau yam ib puag ncig thaum tsim khoom, kev sim, kev thauj mus los, cia thiab siv, cov xov paj thaiv dej yuav tsum muaj cov yam ntxwv hauv qab no los siv hauv fiber ntau cable:
1) Lub ntsej muag huv si, tuab tuab thiab muag muag;
2) Ib qho kev siv zog ua kom tau raws li qhov yuav tsum tau ua kom nruj thaum tsim cov cable;
3) ceev o, zoo tshuaj stability thiab siab zog rau dej nqus thiab gel tsim;
4) Kev ruaj ntseg tshuaj zoo, tsis muaj corrosive Cheebtsam, tiv taus cov kab mob thiab pwm;
5) Zoo thermal stability, zoo huab cua tsis kam, yoog mus rau ntau yam kev ua thiab kev tsim khoom thiab ntau qhov chaw siv;
6) Zoo sib xws nrog lwm cov ntaub ntawv ntawm fiber ntau optic cable.
3 Water-resistant xov paj nyob rau hauv daim ntawv thov ntawm optical fiber cable
3.1 Kev siv cov yarns dej-resistant hauv optical fiber cables
Fiber optic cable manufacturers tuaj yeem txais cov qauv sib txawv hauv cov txheej txheem tsim khoom kom tau raws li cov kev xav tau ntawm cov neeg siv raws li lawv qhov xwm txheej thiab cov kev xav tau ntawm cov neeg siv:
1) Kev thaiv dej ntev ntawm cov ntaub thaiv sab nrauv nrog cov xov paj thaiv dej
Nyob rau hauv wrinkled steel daim kab xev armouring, lub txheej sheath yuav tsum tau longitudinally waterproof tiv thaiv ya raws thiab av noo los ntawm nkag mus rau hauv lub cable los yog lub connector box. Txhawm rau kom ua tiav cov kab dej ntev ntev ntawm cov txheej txheej sab nrauv, ob txoj hlua dej thaiv yog siv, ib qho ntawm cov uas tau muab tso rau tib lub sijhawm rau cov hlua khi sab hauv, thiab lwm qhov yog qhwv ib ncig ntawm cov tub ntxhais cable ntawm ib lub suab (8 txog 15). cm), npog nrog wrinkled steel daim kab xev thiab PE (polyethylene), kom cov dej barrier yarn faib qhov sib txawv ntawm cov tub ntxhais cable thiab steel daim kab xev rau hauv ib tug me me kaw compartment. Cov dej thaiv cov xov paj yuav o thiab tsim cov gel hauv ib lub sijhawm luv luv, tiv thaiv cov dej los ntawm kev nkag mus rau hauv lub cable thiab txwv cov dej rau ob peb qhov me me nyob ze ntawm qhov chaw txhaum, yog li ua tiav lub hom phiaj ntawm qhov ntev ntawm cov dej barrier, raws li qhia hauv daim duab 1 .
Daim duab 1: Kev siv cov dej thaiv cov xov paj hauv optical cable
2) Longitudinal dej thaiv ntawm cov tub ntxhais cable nrog dej thaiv cov xov pajYuav siv tau rau hauv cov tub ntxhais cable ntawm ob feem ntawm cov dej thaiv cov xov paj, ib qho yog nyob rau hauv cov tub ntxhais cable ntawm cov hlau txuas ntxiv, siv ob lub xov paj thaiv dej, feem ntau yog cov xov paj dej thaiv thiab cov hlau txuas ntxiv, lwm cov dej thaiv cov xov paj rau ib lub suab loj dua qhwv ib ncig ntawm cov xov hlau, kuj tseem muaj ob lub xov paj thaiv cov dej thiab cov xov hlau txuas ntxiv rau hauv qhov sib npaug, kev siv cov dej thaiv cov xov paj uas muaj zog nthuav dav los thaiv cov dej; Qhov thib ob yog nyob rau hauv lub xoob casing nto, ua ntej squeezing lub puab sheath, cov dej thaiv cov xov paj raws li ib tug khi yarn siv, ob tug dej thaiv yarn mus rau ib tug me me suab (1 ~ 2cm) nyob rau hauv lub opposite kev taw qhia nyob ib ncig ntawm, tsim ib tug ntom thiab me me. thaiv cov bin, tiv thaiv cov dej nkag, ua los ntawm "cov tub ntxhais qhuav cable" qauv.
3.2 Xaiv cov xov paj uas tiv taus dej
Txhawm rau kom tau txais ob qho tib si dej tsis zoo thiab kev ua haujlwm zoo ntawm kev ua haujlwm hauv cov txheej txheem ntawm fiber ntau optic cable, cov hauv qab no yuav tsum tau muab sau tseg thaum xaiv cov xov paj dej:
1) Lub thickness ntawm cov dej thaiv cov xov paj
Txhawm rau kom ntseeg tau tias qhov nthuav dav ntawm cov dej thaiv cov xov paj tuaj yeem sau qhov sib txawv ntawm qhov sib txawv ntawm cov xov tooj cua, qhov kev xaiv ntawm cov thickness ntawm cov xov paj thaiv dej yog qhov tseem ceeb, qhov no yog qhov cuam tshuam rau cov qauv loj. ntawm lub cable thiab qhov expansion npaum li cas ntawm cov dej thaiv cov xov paj. Nyob rau hauv cov qauv cable yuav tsum txo qis qhov muaj nyob ntawm qhov khoob, xws li kev siv cov xov paj nthuav dav ntawm cov dej thaiv cov xov paj, ces cov kab ntawm cov dej thaiv cov xov paj yuav raug txo kom tsawg tshaj plaws, yog li koj tuaj yeem tau txais cov dej ruaj khov- thaiv kev ua tau zoo, tab sis kuj kom txuag tau cov nqi.
2) o tus nqi thiab gel lub zog ntawm cov dej thaiv cov xov paj
IEC794-1-F5B kev ntsuas dej nkag mus yog ua tiav ntawm tag nrho ntu ntawm fiber ntau optic cable. 1m ntawm dej kem yog ntxiv rau 3m qauv ntawm fiber ntau optic cable, 24h yam tsis muaj qhov to yog tsim nyog. Yog tias qhov o ntawm cov dej thaiv cov xov paj tsis ua raws li tus nqi ntawm cov dej infiltration, nws muaj peev xwm hais tias cov dej tau dhau los ntawm cov qauv hauv ob peb feeb tom qab pib qhov kev ntsuam xyuas thiab cov xov paj thaiv dej tsis tau tag nrho. swelled, txawm hais tias tom qab ib lub sij hawm ntawm cov dej thaiv cov xov paj yuav swelled thiab thaiv cov dej, tab sis qhov no kuj yog ib qho tsis ua hauj lwm. Yog tias qhov nthuav dav nrawm dua thiab lub zog gel tsis txaus, nws tsis txaus los tiv thaiv lub siab tsim los ntawm 1m dej kem, thiab cov dej thaiv dej kuj yuav ua tsis tiav.
3) Softness ntawm cov dej thaiv cov xov paj
Raws li qhov softness ntawm cov dej thaiv cov xov paj ntawm cov khoom siv hluav taws xob ntawm lub cable, tshwj xeeb tshaj yog nyob rau sab nraud, kev cuam tshuam tsis zoo, thiab lwm yam, qhov cuam tshuam yog pom tseeb dua, yog li yuav tsum tau sim siv cov xov paj mos dej ntau dua.
4) Lub zog tensile, elongation thiab ntev ntawm cov dej thaiv cov xov paj
Nyob rau hauv kev tsim ntawm txhua cable tais ntev, dej thaiv cov xov paj yuav tsum tsis tu ncua thiab tsis muaj kev cuam tshuam, uas yuav tsum tau dej thaiv cov xov paj yuav tsum muaj qee lub zog tensile thiab elongation, txhawm rau xyuas kom meej tias cov xov paj thaiv dej tsis rub thaum lub sijhawm tsim khoom. txheej txheem, lub cable nyob rau hauv cov ntaub ntawv ntawm stretching, dabtsi yog khoov, twisting water-blocking yarn tsis puas. Qhov ntev ntawm cov dej thaiv cov xov paj yog nyob ntawm qhov ntev ntawm lub cable tais, thiaj li yuav txo tau cov xov tooj ntawm lub sij hawm hloov nyob rau hauv tas li lawm ntau lawm, qhov ntev ntawm cov dej thaiv cov xov paj yog qhov zoo dua.
5) Lub acidity thiab alkalinity ntawm cov dej thaiv cov xov paj yuav tsum yog nruab nrab, txwv tsis pub cov dej thaiv cov xov paj yuav hnov mob nrog cov khoom siv cable thiab precipitate hydrogen.
6) Kev ruaj ntseg ntawm cov ntaub thaiv dej
Table 2: Kev sib piv ntawm cov dej thaiv cov qauv ntawm cov dej thaiv cov xov paj nrog rau lwm cov ntaub ntawv thaiv dej
| Sib piv cov khoom | Jelly filling | Kub yaj dej stopper nplhaib | Dej thaiv daim kab xev | Dej thaiv cov xov paj |
| Dej tsis kam | Zoo | Zoo | Zoo | Zoo |
| Kev ua tau zoo | Yooj yim | Teeb meem | Ntau qhov nyuaj | Yooj yim |
| Mechanical zog | Tsim nyog | Tsim nyog | Tsim nyog | Tsim nyog |
| Kev ntseeg tau ntev | Zoo | Zoo | Zoo | Zoo |
| Sheath bonding quab yuam | Ncaj ncees | Zoo | Ncaj ncees | Zoo |
| Kev pheej hmoo ntawm kev sib txuas | Yog lawm | No | No | No |
| Cov teebmeem oxidation | Yog lawm | No | No | No |
| Solvent | Yog lawm | No | No | No |
| Loj ib chav tsev ntev ntawm fiber ntau optic cable | Hnyav | Teeb | hnyav dua | Teeb |
| Tsis xav tau cov khoom ntws | Ua tau | No | No | No |
| Kev huv huv hauv kev tsim khoom | pluag | txom nyem dua | Zoo | Zoo |
| Kev tuav khoom | Hnyav hlau nruas | Yooj yim | Yooj yim | Yooj yim |
| Kev nqis peev hauv cov khoom siv | Loj | Loj | Loj dua | Me me |
| Khoom siv | Siab dua | Tsawg | Siab dua | qis |
| Cov nqi tsim khoom | Siab dua | Siab dua | Siab dua | qis |
Kev ruaj ntseg ntawm cov dej thaiv cov xov paj feem ntau yog ntsuas los ntawm lub sijhawm luv luv thiab kev ruaj ntseg mus ntev. Lub sij hawm luv luv yog feem ntau suav tias yog lub sij hawm luv luv kub nce (extrusion sheath txheej txheem kub txog 220 ~ 240 ° C) ntawm cov dej barrier yarn dej barrier zog thiab txhua yam khoom ntawm qhov cuam tshuam; Kev ruaj ntseg ntev, feem ntau xav txog kev laus ntawm cov dej thaiv cov xov paj nthuav dav, tus nqi nthuav dav, gel lub zog thiab ruaj khov, tensile lub zog thiab elongation ntawm qhov cuam tshuam, cov dej thaiv cov xov paj yuav tsum nyob rau hauv lub neej tag nrho (20 ~ 30 xyoo) yog dej tsis kam. Zoo ib yam li cov dej thaiv cov roj thiab cov ntaub thaiv dej, cov gel lub zog thiab kev ruaj ntseg ntawm cov dej thaiv cov xov paj yog cov yam ntxwv tseem ceeb. Cov xov paj thaiv dej nrog lub zog gel siab thiab kev ruaj ntseg zoo tuaj yeem tswj xyuas cov dej thaiv zoo rau lub sijhawm ntev. Ntawm qhov tsis sib xws, raws li cov qauv hauv tebchaws German, qee cov ntaub ntawv nyob rau hauv hydrolysis tej yam kev mob, cov gel yuav decompose mus rau hauv ib tug heev mobile tsis tshua muaj molecular yuag cov ntaub ntawv, thiab yuav tsis ua kom tiav lub hom phiaj ntawm dej mus ntev.
3.3 Kev siv cov xov paj thaiv dej
Dej thaiv cov xov paj ua ib qho zoo heev optical cable dej thaiv cov ntaub ntawv, yog hloov cov roj muab tshuaj, kub yaj nplaum nplaum dej thaiv lub nplhaib thiab dej thaiv kab xev, thiab lwm yam. siv nyob rau hauv ntau ntau nyob rau hauv zus tau tej cov optical cable, Table 2 ntawm ib co ntawm cov yam ntxwv ntawm cov dej thaiv cov ntaub ntawv no rau kev sib piv.
4 Kev xaus
Hauv cov ntsiab lus, cov dej thaiv cov xov paj yog cov khoom siv dej thaiv zoo heev uas tsim nyog rau kev kho qhov muag cable, nws muaj cov yam ntxwv ntawm kev tsim kho yooj yim, txhim khu kev qha, kev ua haujlwm siab, siv tau yooj yim; thiab kev siv cov khoom ntim cov khoom siv kho qhov muag muaj qhov zoo ntawm lub teeb yuag, txhim khu kev qha kev ua tau zoo thiab tus nqi qis.
Post lub sij hawm: Lub Xya hli ntuj-16-2022