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Kev Txhim Kho hauv Cov Kev Tshawb Fawb Txog Cov Khoom Uas Hluav Taws Ntawv Taw Qhia Ntawm Cov Hluav Taws Kub Taws Teeb

Kev Txhim Kho hauv Cov Kev Tshawb Fawb Txog Cov Khoom Uas Hluav Taws Ntawv Taw Qhia Ntawm Cov Hluav Taws Kub Taws Teeb

Nov 25, 2017

1. Mica kab xev

Mica daim kab xev yog cov khoom siv hluav taws xob uas tsis yog hluav taws xob tiv thaiv kabmob, uas yog qhov txiav txim qhov hluav taws kub ntawm cov kab mob uas tsis muaj hluav taws xob tiv thaiv kabmob (mica ribbon fire-resistant cable). Cov qauv ntawm cov kab mos-kab txuas rau ntawm cov nplaim hluav taws xob yog pom nyob hauv daim duab 1.

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Mica daim kab xev muaj dielectric khoom, txhawb cov khoom thiab nplaum. Mica yog dav siv nyob rau hauv thaj tsam ntawm hluav taws xob rwb thaiv tsev vim nws siab dielectric lub zog, me me poob, kub kub ua hauj thiab zoo corona tsis kam. Thaum muaj hluav taws kub, mica tiv thaiv xaim thiab kab hlau thaiv kom muaj hluav taws ntau thiab hluav taws xob. Muaj ob hom mica hauv kab xev nplaum: ntuj mica thiab hluavtaws mica. Muaj ntau hom ntuj mica, thiab muaj ob hom muscovite thiab mica li hluav taws xob insulating khoom. Tam sim no, hluavtaws mica tsuas muaj tus nqi xwb. Cov hluav taws xob cov hluav taws hauv Muscovite nyob hauv chav tsev txias dua li cov mica thiab fluorine mica, tab sis lawv cov khoom raug thaiv kuj yuav poob siab thaum ntsuas kub. Yog li ntawd, nyob hauv Suav teb, mica los yog fluorine mica nrog cov hluav taws kub dua tuaj yeem siv ua mica tapes rau hluav taws xob tiv thaiv hluav taws xob.


Kev siv cov ntaub ntawv coj los siv los txhim kho lub zog ntawm mica tapes thiab txo qhov kev puas tsuaj ntawm daim ntawv ceeb toom mica. Cov iav fiber ntau thiab cov duab polymer yog ob hom kev tuaj yeem siv feem ntau tam sim no siv. Daim iav fiber ntau los ntawm alkali dawb iav txhob lo lo ntxhuav woven iav ntaub siv zog dua mica daim kab xev yog muab faib rau ib leeg-ib tog thiab ob tog sib zog txhawb zog. Vim hais tias muaj cov txheej txheem rov tom qab, kev siv lub nplhaib uas siv hluav taws xob tua yog siv los ntawm ob npaug ntawm daim ntaub iav, thiaj li txo cov tshuaj mica, tab sis kev pabcuam ntxiv yuav ua rau cov kabmob txuas ntxiv thiab nce nqi. Nyob hauv txawv teb chaws, ib sab kev txhawb zog yog qhov tseem ceeb tshaj plaws los txo cov nqi, ua kom lub dag zog thiab hluav taws xob khoom ntawm mica sinter txheej, thiab txo cov kab hluav taws xob.


Tam sim no, polymer film muaj polyester film, polyethylene zaj duab xis thiab li ntawm. Siv cov yeeb yaj duab polymer ua cov cuab cov khoom tuaj yeem txo cov nqi thiab txhim kho cov tawv txhuam tsis ua haujlwm thiab ua haujlwm zoo. Txawm li cas los xij, nws yuav tsum tau xyuas kom cov khoom siv ntawm combustion tsis ua kom lub rwb thaiv tsev ntawm daim kab xev, thiab hais tias qhov elongation ntawm daim kab xev mica yuav tsum tsis txhob loj yog tias lub zog ntawm cov mica daim kab xev siab txaus. Cov hauj lwm ntawm nplaum yuav tsum muab cov ntaub ntawv mica nrog reinforcing cov khoom, uas muaj cov cwj pwm ntawm cov cua sov thiab kev kub siab ntawm mica daim kab xev. Adhesives yuav tsum ua kom muaj zog ntawm daim ntawv lo thiab daim iav iav, mica kab xev muaj qee yam yooj yim thiab ntug khoov siab, phau ntawv tuav cov khoom hauv siab, qhov peb yog qhov tseem ceeb.


Kev txhim kho dav dav ntawm cov khoom rau cov tua hluav taws uas nyob hauv tsev thiab sab nrauv tau tham txog. Mica daim kab xev npaj nrog ntuj nplaum muaj qhov rwb thaiv kom qis, vim li ntawd cov nplaum polyester yog tsim. Tab sis cov polyester nplaum muaj cov pluag cohesiveness, shrinkage, thiab yooj yim kom tawg thiab degraded los ntawm alkali, chloride, organic hnyav thiab dej, ces epoxy resin adhesive yog tsim. Epoxy adhesives tau dav siv vim yog lawv cov rwb thaiv tsev thiab cov khoom zoo, tab sis lawv tseem tsis txaus nyob rau hauv kev kub thiab qhov rwb thaiv tsev. Cov tshuaj pob txha muaj cov tshuaj tua hluavtaws thiab cov rwb thaiv tsev zoo, tshwj xeeb yog tom qab sib txuas ntawm silicone phau ntawv pov tseg, SiO2 muaj hluav taws xob rwb thaiv tsev zoo, yog li feem ntau siv nyob rau hauv epoxy resin tsis muaj peev xwm.


2. Mineral insulating materials

Cov ntxhia hluav taws xob insulated refractory cable yog ib hom cable los ntawm ib lossis ntau cov neeg ua ke uas muaj insulated los ntawm cov hmoov ntxhua hauv cov thooj av hauv cov hlau thaiv. Nws cov khoom siv hluav taws xob ua kom tsis muaj hluav taws xob los ntawm insulating filling khoom thiab hlau sheath, thiab ob yog tag nrho cov inorganic, uas ua rau cov hluav taws xob tiv thaiv hluav taws xob tiv thaiv hluav taws xob muaj cov nqi tsis zoo nyob rau hauv cov qauv ntawm cov hluav taws tsis kam. Cov qauv ntawm cov hluav taws xob hauv cov hluav taws xob hauv cov hluav taws xob raug pom hauv daim duab 2.

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Insulating materials rau ntxhia hluav taws xob tiv thaiv hluav taws xob tiv thaiv kab mob feem ntau yog ua los ntawm Magnesium Oxide. Raws li kev thev tshuaj insulating rau cov khoom hluav taws kub hauv cov hluav taws uas tiv thaiv hluav taws, ob txoj hauv kev yuav tsum tau ntsib: cov hluav taws xob hluav taws xob kub ntawm qhov kub thiab kub. Tsawg cov khoom siv tau ruaj khov thiab lattice zog ntawm kev tsim nyog cations thiab muaj ntau qhov chaw, thiaj li txo txoj kev ion conduction, yog li tsis tag nrho refractory oxides yog kub kub resistant thiab zoo insulating cov ntaub ntawv.


Lub siab kub tsis kam ntawm BeO, MgO thiab Al 2 O 3 hoob kawm II thiab III pawg oxides tuaj yeem ua tau raws li cov qauv hauv cov hluav taws xob cov hluav taws xob hauv hluav taws xob, tab sis tsuas yog Magnesium Oxide xwb yuav siv los ua cov khoom kub hauv cov hluav taws xob . Cov insulating filling khoom ntawm cov ntxhia hluav taws xob insulated hluav taws xob tiv thaiv kab mob yog tsis tsuas yog ib qho ntawm Magnesium Oxide, tab sis kuj lwm yam khoom inorganic nrog cua kub dua.

Cov hlau thaiv cov ntaub ntawv ntawm cov hluav taws kub cov hluav taws cua tiv thaiv hluav taws xob yog cov tooj liab, tooj hlau hlau thiab cov xim tsis muaj zog.

Mineral insulated cable fireproof khoom xyaw txiav txim tias nws muaj kev pom zoo thiab qhov tsis zoo, qhov zoo yog raws li nram no: qhov hluav taws kub tsis kam ntawm cov khoom hluav taws xob thim khoom thiab txhim khu kev ntseeg; tag nrho cov khoom, los ntawm cov tshuaj tsis tov yuav tsis hlawv, tsis sib kis ntawm nplaim taws, tsis muaj tshuaj lom neeg tso tawm; muaj tsis kam rau cov neeg kho tshuab puas, load txaus, anti tsiaj tom los, ntev lub neej yam ntxwv etc ..

Qhov tsis zoo ntawm cov ntxhia hauv cov hluav taws xob cov kab hluav taws xob muaj qhia raws li nram no:

(1) txoj kev tsim muaj ntau txoj haujlwm. Kev tsim cov txheej txheem cov hluav taws xob uas muaj hluav taws xob tiv thaiv kab hlau hluav taws xob uas muaj cov kab hlau tiv thaiv Magnesium Oxide porcelain column, magnesium oxide hmoov tsis tuaj yeem puv txoj kev thiab kev nruam argon nruam, txhua txoj kev yog qhov nyuaj.

Kev nruab thiab kev tsim kho tshuab yog qhov nyuaj. Cov ntaub ntawv rau cov ntxhia hluav taws xob tiv thaiv hluav taws xob tiv thaiv kab mob

Nws muaj pes tsawg leeg thiab cov qauv ua nws txoj hauv kev txhim kho thiab kev tsim kho dua li hauv lwm cov cables, mas vim nws tsis yooj yim rau khoov thiab yuav tsum muaj coob tus xov tooj ntawm lub taub hau, thiab kev siv cov taub hau ntawm lub taub hau cable ntau dua.


Magnesium Oxide yog yooj yim rau damp, yog li nws muaj nruj cai rau qhov chaw thiab kev twb kev txuas cable ntawm cov hluav taws xob insulated hluav taws xob tiv thaiv kab mob, thiaj li kom tsis txhob luv-Circuitis tshwm sim los ntawm Magnesium Oxide damp.

Qeb plaub, tus nqi ntau dua. Vim yog nws cov khoom tshwj xeeb muaj pes tsawg leeg, kev tsim khoom, kev sib txuas ua haujlwm thiab lwm yam tshwj xeeb, ua nws cov nqi siab dua lwm cov cables. Kev tsim cov kab hlau ntxhua ua hluav taws xob pib hauv Fabkis thiab Asmesliskas thaum xyoo 1930, thiab tsim tau sai heev. Nyob rau hauv peb lub teb chaws, txoj kev loj hlob ntawm pob zeb hluav taws xob insulated cable pib lig, tab sis lub koom haum Shanghai Cable Research tsim tau, tab sis cov ntau yam, specifications thiab lwm lub tebchaws txawv teb chaws muaj kev sib txawv loj. Qhov kev txhim kho ntawm cov ntxhia hluav taws xob insulated refractory cables hauv Suav teb tau piav qhia. Tam sim no, nws cov kev tiv thaiv hluav taws xob muaj ntau dua nyob rau hauv kev mob ntawm cov hluav taws xob nuclear.


3. Txhuam ceramic refractory insulating txheej txheem

Cov khoom siv hluav taws xob ntawm cov hluav taws xob kom tsis muaj zog yog lub tshuab hluav taws xob polymer. Nws tuaj yeem ua rau porcelain sai sai thaum tsis kub. Yog li ntawd, nws yog hu ua tsawg kub sai tej hub hlau cable khoom. Cov txheej txheem ua kom zoo, rwb thaiv kab, kev yooj yim hauv cov kab sau ua polymer yog ib puag ncig, zoo ib yam li cov kab hluav taws xob rwb thaiv tsev thaiv; nyob rau hauv cov nplaim siab, polymers raug hlawv, inorganic muab tub lim kub ntawm cov kub ceev porcelain, tus neeg xyuas pib qhov chaw ua ib txheej ntawm cov hluav taws xob insulating plhaub. Txhawm rau kom ntseeg tau tias txoj kev ncaj ncees ntawm txoj kab. Nws tuaj yeem yog hluav taws-resistant thiab insulated nyob rau hauv ib qho, thiab tsuas yog siv tau raws li cov txheej txheem refractory. Ntxiv mus, cov kab hluav taws xob tua hluav taws xob tuaj yeem siv cov khoom lag luam uas niaj hnub siv yooj yim thiab cov txheej txheem, tsis tas muab cov khoom tshiab thiab kho cov txheej txheem. Tus qauv ntawm cov nplaim hluav taws xob tua-kab txuas raug zoo ib yam li cov qauv kab ua qauv, raws li muaj nyob rau ntawm daim duab 3

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Cov txheej txheem tho insulating refractory yog tsim los ntawm polymer thiab inorganic filler. Polymer li matrix khoom siv cov khoom yooj yim rau cable khoom; inorganic muab tub lim coj los ua cov khoom ua si, muab cov khoom siv rau cov porcelain residual. Raws li kev siv, cov roj hmab thiab cov ntaub ntawv yas siv rau cov qauv xov tooj thiab cables yuav siv los ua cov khoom matrix, xws li polyethylene, polypropylene, polyvinyl chloride, roj hmab lossis elastomer, xws li ethylene propylene roj hmab, EVA elastomer, POE elastomer, silicone roj hmab, thiab lwm yam. .


Polyethylene muaj cov khoom zoo heev, tsis muaj cov tshuaj lom neeg, cov pa roj carbon dioxide thiab dej thaum lub sijhawm combustion, ua pa luam yeeb tsawg dua, tab sis nws tsis zoo ntawm cov nplaim hluavtaws, cov pa roj ntsha ntshiab tsuas yog kwv yees li ntawm 17%, hlawv dej loj, ntau dua cov kev cai rau txoj kev loj hlob ntawm hluav taws kub retardant polyethylene coj tsis muaj teeb meem me me. Tus nqi ntawm tag nrho cov tub lim hnyuj hnyuj hnyuj hnyuj hnyav heev, uas yuav ua rau muaj teebmeem tsis zoo ntawm kev ua thiab cov khoom ua haujlwm. Polypropylene yog zoo li cov uas muaj polypropylene.


PVC muaj nplaim nplaum zoo nkauj, ua kom dav siv hlau thiab cable. Tab sis los ntawm cov hauj lwm tam sim no, lub ntim yuav loj hlob yog loj heev hauv combustion, thiab raws li cov txheej txheem hluav taws xob ntau ntawm cov kab hluav taws xob, cov xim ntawm cov txheej txheem thim rov qab yuav tsum tsis txhob hloov ntau ntau thaum lub sijhawm tawg. Ethylene propylene rubber elastomer yog ib hom kev ua tau zoo heev, kev ua kom zoo ntawm polyethylene thiab polypropylene thiab lwm yam zoo sib xws, tiam sis nws muaj kev txhim kho kom zoo dua qub, muaj peev xwm tswj tau qhov kev kawm zoo hauv cov nqi ntau dua, tab sis los ntawm cov kev xav tam sim no, nws tsis muaj polyvinyl chloride combustion expansion tsis xws luag.


Silicone roj hmab muaj kev ywj siab ua rau kub thiab tsis tshua muaj kub, qeeb combustion thiab tsis tshua sov tawm. Nws tuaj yeem raug siv raws li cov khoom siv kabmob ntev ntev hauv siab. Silicone rubber yog ib qho khoom siv hluav taws xob txheej txheem zoo dua qub: thaum nws yog decomposed, yuav tsim muaj ntau tus SiO2 rau cov khoom hluav taws xob tso rau txheej txheem khoom, vim li no, siv cov roj hmab zaws raws li cov khoom siv, yuav txo tau cov nyiaj ntawm inorganic muab tub lim, txhawm rau xyuas kom ua tau zoo ntawm kev sib xyaw ua ke. Cov kab hluav taws xob hauv cov hluav taws uas muaj roj hluav taws xob muaj xws li nplaim hluav taws kub thiab cov nplaim hluav taws tsis qab. Feem ntau siv nplaim hluav taws kub hnyiab tau muaj magnesium hydroxide thiab aluminium hydroxide, thiab feem ntau siv cov nplaim hluavtaws tsis muaj cov hmoov iav, cov hmoov nplej dawb, cov hmoov av, av nplaum, av nplaum, thiab lwm yam thiaj li. cov composites, raug xaiv yog tsim nyog zoo li tus neeg muab cov ntaub so thiab cov neeg ua haujlwm ntawm cov khoom ntim quav. Yuav kom muaj lub plooj (porcelain) thiab compactness ntawm qhov seem, yuav tsum tau them nyiaj rau kev ua kom sib luag ntawm cov quav uas muaj qhov siab thiab lowening lowening point. Yuav kom paub tseeb tias qhov kub ntawm cov ntxhua khaub ncaws uas muaj cov ntxhua khaub ncaws, nws yog qhov tsim nyog yuav tsum tau them rau cov lus sau ntawm cov npoo xaiv, yog cov ziab nrog cov xim alkali hlau tsis tau xaiv, yog li kom tsis txhob muaj cov hluav taws kub kub ntawm cov porcelain muab tshuaj txhuam.