Dab tsi yog qhov txawv ntawm intrinsically nyab xeeb thiab flameproof khoom?
Taw qhia
Yog hais tias qhov teeb meem tshwm sim hauv ib qho khoom siv hluav taws xob lossis cov khoom siv hluav taws xob uas nyob hauv ib cheeb tsam uas muaj cov roj hluav taws xob, qhov txhaum tuaj yeem tsim cov cua sov lossis cov pa taws uas txaus rau ignite cov roj, uas yuav ua rau muaj kev puas tsuaj loj. Muaj ob txoj hauv kev uas feem ntau siv los zam cov xwm txheej zoo li no.
Cov cuab yeej tsuas yog nyob rau hauv ib qho kev tiv thaiv uas muaj zog, uas feem ntau yog tsim los ntawm cov hlau cam khwb cia, tab sis qee zaum yuav ua los ntawm cov yas. Tom qab tawg yuav tsum muaj nyob rau hauv lub enclosure txawm hais tias nws yog tshwm sim los ntawm tshav kub los yog sparks generated los ntawm malfunctioning khoom nyob rau hauv nws. Cov pa hluav taws xob yuav tsum muaj nyob rau qhov kev tawg tshwm sim. Kev xaim teb hauv North America yuav tsum tau nqa nrog cov kav hlau. Hauv Tebchaws Europe thiab lwm qhov ntawm lub ntiaj teb, cov kab hluav taws xob tsim nyog tau siv los ua kev sib txuas ncaj qha rau cov cuab yeej siv los ntawm cov nplaim hluav taws xob cable caj pas uas tau lees paub.
Qhov zoo muaj xws li qhov yooj yim uas lub kaw lus tuaj yeem tsim tau thiab nws qhov tsim nyog rau cov khoom siv hluav taws xob siab
Cov cuab yeej yuav loj hlob hnyav heev thiab kim, thiab qhib lub qhov rooj thaum nws siv zog yuav tsis tso cai. Qhov no yog qhov tsis zoo.
(a) Nyob rau hauv qhov tsis muaj kev phom sij
Los ntawm kev siv lub galvanic los yog zener barrier, lub tswv yim no txwv tsis pub lub zog uas muaj nyob rau hauv cov cuab yeej muaj kev nyab xeeb (IS) rau tus nqi uas feem ntau qis dua 2 watts. Yog li ntawd, cov cuab yeej siv tsis muaj peev xwm ua kom muaj cua sov txaus los yog cov nplaim taws los ua kom cov pa hluav taws kub kub hauv txhua qhov xwm txheej. Ob qho khoom siv IS thiab lub zener barrier yuav tsum muaj daim ntawv pov thawj 'Intrinsically Safe' los ntawm BASEEFA, SIRA, lossis ib lub koom haum uas muaj cov qauv sib piv.
Qhov zoo dua yog tias nws tsis tshua kim dua li cov khoom siv hluav taws xob sib piv thiab cov khoom pov thawj tawg, thiab nws tsis tas yuav muaj kev tshwj xeeb cabling. Tsis tas yuav kaw qhov chaw ua haujlwm li kev saib xyuas nyob tau raug tso cai.
Qhov tsis zoo yog tias nws tsuas yog tsim nyog rau cov khoom siv hluav taws xob tsawg xws li sounders, beacons, thiab cov pa luam yeeb (tag nrho cov uas yuav tsum tau lees paub tias Intrinsically Safe).
Cov ntaub ntawv pov thawj tiv thaiv hluav taws thiab tawg (cov khoom siv tau ntawv pov thawj los ntawm ATEX thiab ICEX li Exd nrog rau North American Class 1 Division 2 khoom).
i. Cov kab lus "flameproof" thiab "explosion proof" tuaj yeem, feem ntau, siv sib hloov. Txawm hais tias muaj qee qhov sib txawv me ntsis ntawm ob, engineers thiab kev ua lag luam feem ntau siv ob nqe lus xa mus rau tib yam khoom, uas yog ib qho khoom siv hluav taws xob uas tau tsim los rau kev ua haujlwm nyob rau hauv ib puag ncig txaus ntshai los ntawm kev siv cov khoom siv hluav taws xob. hnyav luag hauj lwm enclosure.
ii. Kev xaim ntawm txhua qhov system uas siv ATEX lossis ICEX Exd cov cuab yeej muaj ntawv pov thawj, xws li cov suab nrov lossis xenon beacons ua los ntawm E2S Ltd.'s BEX lossis GNEX series, yuav tsum siv cov kab hluav taws xob uas tsim nyog thiab tiv thaiv kev tiv thaiv. Txhawm rau txiav cov cable kom zoo, Exd-certified cable glands thiab junction boxes yuav tsum tau siv. Nyob rau tib theem li cov khoom siv hauv teb, cov qog thiab cov thawv sib txuas yuav tsum muaj daim ntawv pov thawj Exd los ntawm BASEEFA, SIRA, lossis lwm lub cev sib piv.
Cov Khoom Siv Hauv Tsev Muaj Kev Nyab Xeeb (ATEX & ICEX cov cuab yeej tau lees paub Exia, Exib, Exic & North American Class 1 Div 1 cov cuab yeej)
Kev siv lub zener barrier, uas muab tso rau nruab nrab ntawm cov tswj vaj huam sib luag thiab cov cuab yeej, xws li E2S Ltd MiniAlarm sounders los yog Apollo Orbis Series IS cov pa luam yeeb, tso cai rau kev nyab xeeb kom tau txais nyob rau hauv qhov chaw uas pom tias muaj kev phom sij.
Yog xav paub ntxiv, thov xyuam xim rauBenwei lub vev xaib official!
