Shenhai Explosion-Proof
Cia peb pib los ntawm kev piav qhia txog ntau yam kev ntsuas tawg-pov thawj, yam lawv qhia, thiab yuav xaiv lawv li cas hauv kev xyaum, siv cov khoom tawg-pov thawj tawg ua piv txwv.
| Gas pab pawg / kub pawg | T1 | T2 | T3 | T4 | T5 | T6 |
|---|---|---|---|---|---|---|
| IIA | Formaldehyde, toluene, methyl ester, acetylene, tshuaj propane, acetone, acrylic acid, tshuaj benzene, styrene ua, carbon monoxide, ethyl acetate hmoov, acetic acid, tshuaj chlorobenzene, methyl acetate, tshuaj chlorine | Methanol, ethanol, ethylbenzene, propanol, propylene, butanol, butyl acetate hmoov, amyl acetate hmoov, cyclopentane | Pentane, pentanol, hexane, ethanol, heptane, octane ua, cyclohexanol, turpentine, naphtha, roj av (suav nrog roj av), roj roj, pentanol tetrachloride | Acetaldehyde, trimethylamine | Ethyl nitrite | |
| IIB | propylene ester, dimethyl ether | Butadiene, epoxy propane hmoov, ethylene | Dimethyl ether, acrolein, hydrogen carbide | |||
| IIC | Hydrogen, dej gas | Acetylene | Cov pa roj carbon disulfide | Ethyl nitrate |
Daim ntawv pov thawj:
Ex d IIB T4 Gb/Ex tD A21 IP65 T130 ° C yog daim ntawv pov thawj thoob ntiaj teb rau kev tiv thaiv roj thiab hmoov av, qhov twg yog ib feem ua ntej lub slash (/) qhia txog qib roj tawg-pov thawj, thiab ib feem tom qab lub slash qhia tias plua plav tawg-pov thawj.
Ex: Cov cim pov thawj tawg, tus qauv qauv ntawm IEC (International Electrotechnical Commission) Kev ntsuas tawg-pov thawj.
d: Flameproof hom, qhia tias thawj daim ntawv ntawm kev tiv thaiv tawg yog flameproof.
IIB: Sawv cev rau Class B gas explosion tiv thaiv.
T4: Qhia qhov kub chav kawm.
Gb: Qhia tias cov khoom no haum rau Zone 1 Kev tiv thaiv tawg.
Rau qhov hmoov av tawg ib feem ntawm lub xeem ib nrab, nws txaus kom ua tiav qib siab tiv thaiv plua plav 6 raws li cov qauv kev tawg-pov thawj gas.
tD: Sawv cev rau hom kev tiv thaiv enclosure (tiv thaiv plua plav ignition nrog enclosure).
A21: Qhia txog thaj chaw siv tau, haum rau Zone 21, Zone 22.
IP65: Sawv cev qib tiv thaiv.
Nws yog ib qho tseem ceeb los xaiv qhov tseeb tawg-pov thawj ntsuam xyuas hauv qhov chaw tiag tiag.
Ua ntej, Nws yog ib qho tseem ceeb kom nkag siab txog ob yam tseem ceeb, raws li tau piav qhia hauv qab no:
Hom tawg-pov thawj:
Chav kawm I: Cov khoom siv hluav taws xob rau underground coal mines;
Chav II: Cov khoom siv hluav taws xob rau tag nrho lwm yam tawg gas ib puag ncig tshwj tsis yog cov mines thiab underground.
Chav II tuaj yeem muab faib ua IIA, IIB, thiab IIC, qhov twg cov cuab yeej cim IIB tuaj yeem siv tau raws li cov xwm txheej tsim nyog rau IIA li; IIC tuaj yeem siv tau raws li qhov tsim nyog rau IIA thiab IIB.
Chav Kawm III: Cov khoom siv hluav taws xob rau cov plua plav tawg ib puag ncig uas tsis yog cov mines thee.
IIIA: Combustible flyings; IIIB: Tsis-conductive plua plav; IIIC: Conductive plua plav.
Cov chaw tawg-pov thawj:
Zone 0: Qhov twg muaj cov pa roj tawg ib txwm los yog nquag muaj; tsis tu ncua txaus ntshai rau ntau tshaj 1000 teev/xyoo;
Zone 1: Qhov twg nplaim taws gases tej zaum yuav tshwm sim thaum lub sij hawm ua hauj lwm; intermittently txaus ntshai rau 10 rau 1000 teev/xyoo;
Zone 2: Qhov twg flammable gases tsis nquag muaj thiab, yog lawv tshwm sim, tej zaum yuav tsis tshua muaj thiab luv luv; txaus ntshai tam sim no rau 0.1 rau 10 teev/xyoo.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias peb suav nrog Chav Kawm II thiab III, Zone 1, Zone 2; Zone 21, Zone 22.
Feem ntau, ncav cuag IIB yog txaus rau cov pa roj, tab sis rau hydrogen, acetylene, thiab carbon disulfide, yuav tsum muaj qib siab ntawm IIC. Rau kev tiv thaiv plua plav tawg, tsuas yog ua tiav cov roj sib txuas tawg-pov thawj theem thiab qib hmoov av siab tshaj plaws.
Kuj tseem muaj qhov sib xyaw ua ke tawg-pov thawj faib lub thawv kev ntaus nqi: ExdeIIBT4Gb.