Cov Hom Sheath Rau Cov Cables Optical Thiab Lawv Cov Kev Ua Tau Zoo

Yuav kom ntseeg tau tias lub hauv paus ntawm cov xov hlau optical raug tiv thaiv los ntawm kev puas tsuaj los ntawm kev siv tshuab, cua sov, tshuaj lom neeg, thiab dej noo, nws yuav tsum tau nruab nrog lub hnab lossis txawm tias cov khaubncaws sab nraud ntxiv. Cov kev ntsuas no ua rau lub neej ua haujlwm ntawm cov fibers optical ntev dua.

Cov sheaths uas siv ntau hauv cov cables optical suav nrog A-sheaths (aluminium-polyethylene bonded sheaths), S-sheaths (steel-polyethylene bonded sheaths), thiab polyethylene sheaths. Rau cov cables optical hauv dej tob, cov sheaths uas kaw ua los ntawm hlau feem ntau yog siv.

Cov polyethylene sheaths yog ua los ntawm linear low-density, medium-density, lossiscov khoom siv polyethylene dub uas muaj cov khoom ntom ntom, ua raws li tus qauv GB/T15065. Qhov saum npoo ntawm lub hnab polyethylene dub yuav tsum du thiab sib xws, tsis muaj npuas pom, qhov, lossis kab nrib pleb. Thaum siv ua lub hnab sab nraud, qhov tuab nominal yuav tsum yog 2.0 hli, nrog qhov tuab tsawg kawg nkaus ntawm 1.6 hli, thiab qhov tuab nruab nrab ntawm txhua qhov seem yuav tsum tsis pub tsawg dua 1.8 hli. Cov khoom siv kho tshuab thiab lub cev ntawm lub hnab yuav tsum ua tau raws li qhov yuav tsum tau teev tseg hauv YD/T907-1997, Rooj 4.

Lub A-sheath muaj ib txheej tiv thaiv dej noo ua los ntawm cov ntaub qhwv ntev thiab sib tshoojdaim kab xev yas coated txhuas, ua ke nrog lub plhaub polyethylene dub extruded. Lub plhaub polyethylene sib txuas nrog daim kab xev sib xyaw thiab cov npoo sib tshooj ntawm daim kab xev, uas tuaj yeem ua kom muaj zog ntxiv nrog cov nplaum yog tias xav tau. Qhov dav sib tshooj ntawm daim kab xev sib xyaw yuav tsum tsis pub tsawg dua 6 hli, lossis rau cov tub ntxhais cable nrog txoj kab uas hla tsawg dua 9.5 hli, nws yuav tsum tsis pub tsawg dua 20% ntawm lub plawv qhov ncig. Lub npe hu ua tuab ntawm lub plhaub polyethylene yog 1.8 hli, nrog qhov tuab tsawg kawg nkaus ntawm 1.5 hli, thiab qhov tuab nruab nrab tsis pub tsawg dua 1.6 hli. Rau Hom 53 txheej sab nraud, lub npe hu ua tuab yog 1.0 hli, qhov tuab tsawg kawg nkaus yog 0.8 hli, thiab qhov tuab nruab nrab yog 0.9 hli. Daim kab xev txhuas-yas sib xyaw yuav tsum ua tau raws li tus qauv YD/T723.2, nrog rau daim kab xev txhuas muaj qhov tuab tsawg kawg nkaus ntawm 0.20 hli lossis 0.15 hli (yam tsawg kawg nkaus 0.14 hli) thiab qhov tuab zaj duab xis sib xyaw ntawm 0.05 hli.

Thaum lub sijhawm tsim cov xov hlau, tsuas pub siv ob peb qhov sib txuas ntawm cov ntaub nplaum sib xyaws ua ke xwb, yog tias qhov sib nrug ntawm cov ntaub nplaum sib xyaws ua ke tsis pub tsawg tshaj 350 m. Cov ntaub nplaum no yuav tsum ua kom muaj hluav taws xob txuas ntxiv mus thiab rov qab kho cov txheej yas sib xyaws ua ke. Lub zog ntawm qhov sib txuas yuav tsum tsis pub tsawg tshaj 80% ntawm lub zog ntawm daim ntaub nplaum qub.

Lub S-sheath siv cov txheej tiv thaiv dej noo ua los ntawm cov corrugated qhwv ntev thiab sib tshoojdaim kab xev hlau yas coated, ua ke nrog lub plhaub polyethylene dub extruded. Lub plhaub polyethylene khi nrog daim kab xev sib xyaw thiab cov npoo sib tshooj ntawm daim kab xev, uas tuaj yeem txhawb nqa nrog cov nplaum yog tias tsim nyog. Daim kab xev sib xyaw corrugated yuav tsum tsim cov qauv zoo li lub nplhaib tom qab qhwv. Qhov dav sib tshooj yuav tsum tsis pub tsawg dua 6 hli, lossis rau cov tub ntxhais cable nrog txoj kab uas hla tsawg dua 9.5 hli, nws yuav tsum tsis pub tsawg dua 20% ntawm lub plawv ncig. Lub npe hu ua tuab ntawm lub plhaub polyethylene yog 1.8 hli, nrog qhov tuab tsawg kawg nkaus ntawm 1.5 hli, thiab qhov tuab nruab nrab tsis pub tsawg dua 1.6 hli. Daim kab xev sib xyaw hlau-yas yuav tsum ua tau raws li tus qauv YD / T723.3, nrog rau daim kab xev hlau muaj qhov tuab tsawg kawg nkaus ntawm 0.15 hli (yam tsawg kawg nkaus 0.13 hli) thiab qhov tuab zaj duab xis sib xyaw ntawm 0.05 hli.

Cov kab sib txuas ua ke raug tso cai thaum lub sijhawm tsim cov xov hlau, nrog qhov sib nrug tsawg kawg yog 350 m. Daim kab hlau yuav tsum tau sib txuas ua ke, kom ntseeg tau tias hluav taws xob txuas ntxiv mus thiab rov qab kho cov txheej sib txuas. Lub zog ntawm qhov sib txuas yuav tsum tsis pub tsawg dua 80% ntawm lub zog ntawm daim kab hlau sib txuas thawj.

Cov ntaub nplaum txhuas, cov ntaub nplaum hlau, thiab cov txheej hlau uas siv rau cov khoom thaiv dej noo yuav tsum tswj tau qhov txuas hluav taws xob raws li qhov ntev ntawm cov xov hlau. Rau cov ntaub nplaum sib txuas (xws li Hom 53 txheej sab nraud), lub zog tev tawm ntawm cov ntaub nplaum txhuas lossis hlau thiab cov ntaub nplaum polyethylene, nrog rau lub zog tev tawm ntawm cov npoo sib tshooj ntawm cov ntaub nplaum txhuas lossis hlau, yuav tsum tsis pub tsawg dua 1.4 N/mm. Txawm li cas los xij, thaum siv cov khoom thaiv dej lossis txheej txheej rau hauv qab cov ntaub nplaum txhuas lossis hlau, lub zog tev tawm ntawm cov npoo sib tshooj tsis tas yuav tsum muaj.

Cov qauv tiv thaiv no ua kom ntseeg tau tias cov xov hlau kho qhov muag ua haujlwm tau ntev thiab ntseeg tau hauv ntau qhov chaw, ua tau raws li qhov xav tau ntawm cov kab ke sib txuas lus niaj hnub.