Shenhai Explosion-Proof
define
Tus tawg kev tiv thaiv kev ntsuam xyuas, kub, tawg, thiab muaj feem xyuam rau txoj kev soj ntsuam cov khoom uas muaj hluav taws xob. Cov ntaub ntawv no yog siv los piav seb txoj kev tiv thaiv explosions, Qhov kub tshaj plaws uas cov khoom yuav khiav lag luam muaj kev ruaj ntseg zoo, Hom kev tiv thaiv tawg tiv thaiv kab mob, thiab tsim kom muaj qhov chaw uas tsim nyog.
Noj Ex demo IIC T6 GB ua ib qho piv txwv
EX
No cim qhia tias cov khoom hluav taws xob raws li ib los yog ntau explosion-proof hom nyob rau hauv cov txheej txheem explosion-proof;
Raws li cov lus qhia nyob rau hauv Tsab Xov Xwm 29 Ntawm tus GB3836.1-2010 txheem, nws yuav tsum tau ua kom muaj tawg-proof fais fab tuag dais lub distinct “Ex” npav nyob rau hauv ib txoj hauj lwm mas txoj hauj lwm rau nws lub cev lwm lub cev. txuas ntxiv, Cov khoom siv lub npe yuav tsum tso cov zaub uas tsim nyog explosion-proof marking nrog rau daim ntawv pov thawj uas verifies nws
ua raws li txoj cai.
Demb
Cov zaub tawg tiv thaiv hom explosion-proof hluav taws xob khoom txiav txim seb qhov specific explosive tsis zoo noj.
Tawg Pov thawj
| Tawg pov thawj | Tawg pov thawj marking | ntawv ceeb toom |
|---|---|---|
| Flameproof hom | d | |
| Muaj kev ruaj ntseg ntau yam | e | |
| pressurized | p | |
| Intrinsically muaj kev ruaj ntseg zoo | tub sab | |
| Intrinsically muaj kev ruaj ntseg zoo | ib qho | |
| Roj ntxeem tau hom ntxeem tau | o | |
| Xuab zeb sau hom | q | |
| Adhesive sealing hom | m | |
| N-Hom N-Hom | n | Txoj kev tiv thaiv yog txwv kom muab zais raws li MA thiab MB. |
| SpeciaL hom | s | Lub classification encompasses nA, nR, thiab n-concave hom |
Ntawv Ceeb Toom: Lub rooj exhibits lub prevalent tawg tiv thaiv hom hluav taws xob khoom, Cuag thaum lawv tseem tawg tiv thaiv txoj kev tiv thaiv los tsim hybrid tawg tiv thaiv hom.
piv txwv li, tsim “Ex demb” signifies ib hybrid tawg tiv thaiv hom rau cov khoom hluav taws xob, incorporating taws, muaj kev ruaj ntseg, thiab encapsulation methods.
Lub classification ntawm tsam nyob rau tej cheeb tsam prone rau roj tawg hazards:
Nyob rau tej thaj chaw uas explosive gases thiab qhov khuv vapors combine nrog cua los tsim explosive roj mixtures, Peb tsam classifications raws li qib uas phom sij yog tsim los pab:
tsam 0 (Hu ua Aav 0): Ib qhov chaw uas explosive roj mixtures continuously, nquag, los yog pheej tsis tshua muaj tshwm sim nyob rau hauv tej yam muaj tshwm sim.
tsam 1 (Hu ua Aav 1): Ib qhov chaw uas explosive roj mixtures tej zaum yuav tshwm sim nyob rau hauv tej yam tshwm sim.
tsam 2 (Hu ua Aav 2): Ib qhov chaw uas explosive roj mixtures yuav tsis tuaj tshwm sim nyob rau hauv tej yam tshwm sim, Tiam sis tej zaum yuav tshwm sim luv luv thaum abnormal tshwm sim.
Ntawv Ceeb Toom: Tej yam tshwm sim xa mus rau lub startup, shutdown, kev zov me nyuam, tu thiab tu kom zoo, Thaum abnormal muaj tshwm sim pertain rau tej khoom malfunctions los yog
tsis sib paub.
Cov correlation ntawm tej thaj chaw uas yuav raug roj explosions thiab lawv corresponding tawg tiv thaiv hom.
| roj | Qhov kev kuaj ntawd kuaj pom kev ruaj ntseg kis MESG (mm) | Yam tsawg kawg yog ignition tam sim no piv MICR |
|---|---|---|
| IIA | MESG≥0.9 | MICR>0.8 |
| IIB | 0.9>MESG>0.5 | 0.8≥MICR≥0.45 |
| IIC | 0.5≥MESG | 0.45>MICR |
Ntawv Ceeb Toom: Xav txog tej yam tshwm sim nyob rau hauv peb lub teb chaws, siv cov e-type (muaj kev ruaj ntseg) Cov khoom siv fais fab hluav taws xob txwv tsis pub tsam muaj 1, pub rau:
Wiring thawv thiab junction thawv uas tsis ua kom muaj sparks, arcs, los yog tej yam kub txias thaum lub sij hawm ua hauj lwm yog txwv kom muab zais rau hauv lub cev thiab e hom wiring seem.
piv txwv li, Cov tawg tiv thaiv designation ntawm lub BPC8765 LED tawg-prof platform teeb yog Ex demb IIC T6 GB. Lub teeb compartment yog flameproof (d), Tus tsav circuit court seem yog encapsulated (mb), thiab cov wiring compartment nta muaj kev ruaj ntseg (e) tawg-profo siv. Raws li ib tug aforementioned specifications, Lub teeb no siv tau rau hauv Zone 1.
II
Cov khoom qeb ntawm tus tawg-pov thawj hluav taws xob ntaus txiav txim seb nws suitability rau tej chaw explosive roj.
Explosion-proof khoom yog txhais li hluav taws xob li ntawd, raws li cov lus qhia, Tsis ignite tus surrounding explosive ib puag ncig.
li no, Cov khoom uas labeled nrog lub aforementioned tawg-prof tsim (EX demb IIC) exclusively suitable rau tag nrho cov roj explosive tej chaw, excluding thee mines thiab underground chaw.
C
Cov pab pawg neeg uas tawg-proof hluav taws xob ntaus txiav txim seb nws compatibility nrog specific explosive roj mixtures.
Txhais Cov Ntsiab Lus Ntawm Roj:
Nyob rau hauv tag nrho cov nkev explosive tej chaw, Tsuas yog rau thee mines thiab underground chaw (i.e., ib puas tsim nyog rau hoob kawm II hluav taws xob), explosive gases yog categorized rau hauv peb pawg, ab, B, thiab C, Raws li qhov xyaum ua tej yam kev ruaj ntseg kis los yog yam tsawg kawg yog ignition tam sim no piv ntawm cov roj mixtures. Cov roj grouping thiab ignition kub yog nyob ntawm tus concentration ntawm combustible roj thiab huab cua nyob rau tej huab cua kub thiab siab ntsws.
Txoj kev sib raug zoo ntawm cov roj explosive mixtures, pa roj, thiab qhov ntau xyaum ua tej yam kev ruaj ntseg kis los yog yam tsawg kawg yog ignition tam sim no piv:
| roj | Qhov kev kuaj ntawd kuaj pom kev ruaj ntseg kis MESG (mm) | Yam tsawg kawg yog ignition tam sim no piv MICR |
|---|---|---|
| IIA | MESG≥0.9 | MICR>0.8 |
| IIB | 0.9>MESG>0.5 | 0.8≥MICR≥0.45 |
| IIC | 0.5≥MESG | 0.45>MICR |
Ntawv Ceeb Toom: Sab laug reveals tias qhov tseem ceeb ntawm explosive roj kev ruaj ntseg kis los yog yam tsawg kawg piv correspond rau ntau theem uas yuav raug explosive gases. li no, Nws muaj nws ib qho thov kom nruj roj grouping yuav tsum tau nyob tawg-prof hluav taws xob li.
Roj pawg feem ntau yog mob uas muaj explosive gases/tej yam khoom:
| Roj/kub pab pawg neeg/kub pab pawg neeg | T1 | T2 | T3 | T4 | T5 | T6 |
|---|---|---|---|---|---|---|
| IIA | Formaldehyde, toluene, methyl ester, acetylene, propane, acetone, acrylic acid, benzene, styrene, pa roj carbon monoxide, ethyl acetate, qaub, chlorobenzene, methyl acetate, tshuaj chlorine | Methanol, ethanol, ethylbenzene, propanol, propylene, tiam sis taum, tiam sis acetate, amyl acetate, cyclopentane | hnub, cwj mem qhuav, hexane, ethanol, heptane, octane, cyclohexanol, turpentine, ntawv so ntswg, roj av (roj av), roj, pentanol tetrachloride | Acetaldehyde, trimethylamine | Ethyl nitrite | |
| IIB | Propylene ester, dimethyl ether | Butadiene, epoxy propane, ethylene | Dimethyl ether, acrolein, hydrogen carbide | |||
| IIC | hydrogen, roj | Acetylene | Carbon disulfide | Ethyl nitrate |
Piv txwv: Nyob rau hauv rooj plaub uas cov hazardous tej yam khoom tam sim no nyob rau hauv ib cheeb tsam explosive yog hydrogen los yog acetylene, Cov pab pawg neeg roj assigned rau qhov chaw no yog categorized li pab pawg neeg C. tshwj xeeb tshaj yog, Cov khoom siv fais fab siv nyob rau hauv qhov chaw no yuav tsum adhere to cov pab pawg neeg specifications uas tsis muaj tsawg tshaj IIC theem.
Nyob rau hauv rooj plaub uas tej yam khoom tam sim no nyob rau hauv lub explosive roj yog formaldehyde, Cov pab pawg neeg roj designated rau qhov chaw no yog classified li ib pawg A. tshwj xeeb tshaj yog, Cov khoom hluav taws xob ua hauj lwm nyob rau hauv qhov chaw no yuav tsum adhere to cov pab pawg neeg specifications tsawg kawg yog IIA theem. tiam sis, Cov khoom hluav taws xob uas muaj cov roj iiB los sis IIC kuj siv tau nyob rau tej cheeb tsam no.
T6
Qhov no txias Pab pawg neeg assigned rau ib tawg-profo hluav taws xob ntaus txiav txim seb cov roj ib puag ncig uas nws yog compatible ntawd ignition kub.
Cov pab pawg neeg kub yog txhais raws li nram no:
Txias txwv, xa mus ua ignition kub, Nyob ua ib ke rau explosive roj mixtures, defining qhov kub uas lawv yuav ua tau zes. tshwj xeeb tshaj yog, Yuav tsum tau kav qhov chaw kub txog hluav taws xob siv nyob rau hauv tej cheeb tsam no, necessitating tias qhov chaw kub ntawm cov khoom tsis surpass lub ignition kub. raws li, Cov khoom hluav taws xob yog categorized rau pawg, T1-T6, Raws li lawv feem ntau tshaj qhov kub tshaj plaws.
| Ignition kub ntawm combustible tej yam khoom | Qhov kub tshaj plaws ntawm cov khoom siv (°C) | txias |
|---|---|---|
| t>450 | 450 | T1 |
| 450≥t>300 | 300 | T2 |
| 300≥t>200 | 200 | T3 |
| 200≥t>135 | 135 | T4 |
| 135≥t>100 | 100 | T5 |
| 100≥t>85 | 85 | T6 |
Raws li cov lus qhia nyob rau sab laug, Ib txoj kev sib raug zoo tseeb yuav tau cai ntawm lub ignition kub ntawm combustible tej yam khoom thiab cov corresponding kub pab pawg neeg yuav tsum tau tawg-profo hluav taws xob li. tshwj xeeb tshaj yog, Raws li qhov kub ignition kub, Cov zov rau cov pab pawg neeg kub rau cov hluav taws xob li nce.
Qhov kub classification correlates nrog lub commonly ces yuav tsum explosive gases/tej yam khoom:
| Roj/kub pab pawg neeg/kub pab pawg neeg | T1 | T2 | T3 | T4 | T5 | T6 |
|---|---|---|---|---|---|---|
| IIA | Formaldehyde, toluene, methyl ester, acetylene, propane, acetone, acrylic acid, benzene, styrene, pa roj carbon monoxide, ethyl acetate, qaub, chlorobenzene, methyl acetate, tshuaj chlorine | Methanol, ethanol, ethylbenzene, propanol, propylene, tiam sis taum, tiam sis acetate, amyl acetate, cyclopentane | hnub, cwj mem qhuav, hexane, ethanol, heptane, octane, cyclohexanol, turpentine, ntawv so ntswg, roj av (roj av), roj, pentanol tetrachloride | Acetaldehyde, trimethylamine | Ethyl nitrite | |
| IIB | Propylene ester, dimethyl ether | Butadiene, epoxy propane, ethylene | Dimethyl ether, acrolein, hydrogen carbide | |||
| IIC | hydrogen, roj | Acetylene | Carbon disulfide | Ethyl nitrate |
Ntawv Ceeb Toom: Cov lus qhia uas muaj nyob rau saum rooj saum toj no yog siv rau cov hom phiaj xwb. Thov tham nrog cov lus kom meej meej hauv GB3836 kom tau daim ntawv thov.
Piv txwv: Yog hais tias cov carbon disulfide yog cov hazardous tej yam khoom nyob rau hauv lub explosive roj chaw, Nws corresponds rau kub pab pawg neeg T5. tshwj xeeb tshaj yog, Qhov kub ntawm cov khoom siv fais fab siv nyob rau hauv cheeb tsam no yuav tsum tau T5 los yog siab dua. mob(nurses), zoo ib yam li, Yog formaldehyde yog lub hazardous tej yam khoom nyob rau hauv lub explosive roj chaw, Nws corresponds rau kub pab pawg neeg T2. Yog li ntawd, vim, Qhov kub ntawm cov khoom siv fais fab siv nyob rau hauv cheeb tsam no yuav tsum tau T2 los yog siab dua. Nws puas tsim nyog mentioning tias hluav taws xob khoom uas muaj peevxwm ntawm T3 los yog T4 kuj siv tau nyob rau hauv cheeb tsam no.
GB
Cov khoom tiv thaiv theem signifies theem ntawm kev tiv thaiv rau cov tawg-profo hluav taws xob apparatus, denoting kev ruaj ntseg ntawm cov khoom.
Lub ntsiab txhais ntawm cov khoom tiv thaiv rau explosive roj tej chaw yog muab nyob rau hauv seem 3.18.3, 3.18.4, Thiab 3.18.5 GB3836.1-2010.
3.18.3
Ga Theem EPL Ga
Khoom npaj rau explosive roj nta ib “Loj” kev tiv thaiv, Ensuring nws tsis pab raws li ib qhov chaw ignition thaum lub lag luam mus tsis tu ncua, ntseg faults, los yog exceptional malfunctions.
3.18.4
Gb theem EPL Gb
Cov khoom npaj rau explosive roj nta ib “Loj” kev tiv thaiv, guaranteeing tias nws tsis pab raws li ib qhov chaw ignition thaum lub lag luam los yog ntseg txhaum rau cov neeg mob.
3.18.5
Gc Theem EPL Gc
Cov khoom siv nyob rau hauv explosive roj exhibits ib “dav” Kev tiv thaiv thiab tsis ua raws li ib qhov chaw ignition thaum lub lag luam. Supplementary tiv thaiv kev ntsuas kuj yuav tau DVR los xyuas kom meej tias nws tsis zoo ignite nyob rau hauv cov teeb meem uas ignition qhov chaw yuav tsum tshwm sim heev, Xws li nyob rau hauv rooj plaub ntawm lighting fixture malfunctions.