Shenhai Explosion-Proof
Cov khoom tiv thaiv kev tiv thaiv (EPL) Ntsuam xyuas cov tawg-pov thawj reliability ntawm ib hom ntaus ntawv raws li tej faults thiab tiv thaiv kev ntsuas, Muab rau neeg noj raws li ib tug tseem ceeb kev ruaj ntseg indicator rau tawg-prof hluav taws xob khoom.
| Qeb | Roj Classification | Cov neeg sawv cev gases | Yam tsawg kawg yog Ignition spark zog |
|---|---|---|---|
| Nyob rau hauv lub mine | Kuv | methane | 0.280mJ |
| Factories sab nraum lub Mine | IIA | Propane | 0.180mJ |
| IIB | Ethylene | 0.060mJ | |
| IIC | hydrogen | 0.019mJ |
Cov theem yog categorized ua ib, b, thiab c:
1. Theem ib xyuas kom zoo ib yam li explosion-proof kev nyab xeeb kev nyab xeeb nyob rau hauv tej haujlwm thiab thaum ob leeg ntseg thiab tsis tshua muaj faults.
2. Theem b guarantees lub retention ntawm explosion-proof kev ruaj ntseg kev nyab xeeb thaum tej haujlwm thiab foreseable faults.
3. Theem c assures lub maintenance ntawm explosion-proof kev ruaj ntseg kev nyab xeeb nyob rau hauv ob txoj haujlwm thiab tej teeb meem abnormal.
feem ntau, Tawg-pov thawj ntaus ntawv yuav tsum tau ntsib theem 3 kev tiv thaiv. Tej zaum kuj muaj qee zaus, txawm li ntawd los, theem 2 Lossis 1 tej zaum yuav permissible rau specific explosion-proof hom.
Marking txoj kev muaj xws li:
1. Raws li tus tawg-pov thawj cim:
Thaum lawv tseem ua ke tawg-profo thiab khoom tiv thaiv cov cim denotes txoj kev tiv thaiv. piv txwv li, Kev ruaj ntseg yooj yim li yog cim li ia, ib qho, los sis ic.
2. Raws li cov khoom cim:
Merging cov khoom thiab kev tiv thaiv cim qhia txoj kev tiv thaiv theem. Piv txwv, Hoob Kawm Kuv (tsuas) Khoom yog khij li Ma los yog Mb (M sawv cev rau kuv); Hoob Kawm III (Hoobkas, pa roj) Khoom yog khij li Ga, gb, LOS SIS GE (roj).
Nws tseem ceeb heev uas yuav tau nkag siab tias khoom tiv thaiv thiab tawg-pov thawj theem yog distinct concepts feem ntau tsis meej pem hauv daim ntawv thov. Txoj kev tiv thaiv qhia “kev ua siab,” Thaum lub tawg-pov thawj theem reflects “combustible roj khoom thiab khoom nta.” piv txwv li, Nyob rau hauv ib qho industrial teem nrog ib qhov hydrogen tawg uas yuav raug (tsam 0), Yuav tsum tau intrinsic kev ruaj ntseg khoom yuav theem ia, Tawg-Pov thawj qib IIC. tsawg kawg ed hydrogen qhov chaw uas yuav muaj (tsam 1), Ib theem ib, IIC intrinsic kev ruaj ntseg khoom yuav ntsib qhov xav tau, Tab sis yog ia, IIC khoom yuav tau suitable.