Ubufakazi bokuqhuma kwe-Shenhai
Izinga Lokuvikelwa Kwezisetshenziswa (I-EPL) ihlola ukuthembeka kobufakazi bokuqhuma kohlobo oluthile lwedivayisi ngokusekelwe kumaphutha angenzeka kanye nezinyathelo zokuvimbela, esebenza njengenkomba yokuphepha ebalulekile yezinto zikagesi ezingaqhumi.
| Isigaba Sesimo | Ukuhlukaniswa Kwegesi | Amagesi amele | I-Minimum Ignition Spark Energy |
|---|---|---|---|
| Ngaphansi Kwemayini | I | I-Methane | 0.280mJ |
| Izimboni Ngaphandle Kwezimayini | IIA | I-Propane | 0.180mJ |
| IIB | I-Ethylene | 0.060mJ | |
| I-IIC | I-hydrogen | 0.019mJ |
Amazinga ahlukaniswa njenge-a, b, kanye c:
1. Ileveli a iqinisekisa ukusebenza okungaguquguquki kokuphepha okuvikela ukuqhuma ngaphansi kokusebenza okuvamile nangaphakathi kwamaphutha alindelwe nangavamile.
2. Ileveli b iqinisekisa ukugcinwa kokusebenza kokuphepha okuvikela ukuqhuma phakathi nokusebenza okuvamile namaphutha abonakalayo.
3. I-Level c iqinisekisa ukugcinwa kokusebenza kokuphepha okuvikela ukuqhuma kukho kokubili ukusebenza okuvamile nezimo ezithile ezingavamile.
Ngokuvamile, idivayisi evikela ukuqhuma kulindeleke ukuthi ihlangabezane neLeveli 3 isivikelo. Ezimweni ezithile, nokho, Amazinga 2 noma 1 ingase ivumeleke ezinhlotsheni ezithile zokuvikela ukuqhuma.
Izindlela zokumaka zihlanganisa:
1. Ngokusekelwe kuphawu lohlobo lokuvikela ukuqhuma:
Inhlanganisela ye- uhlobo lokuvikela ukuqhuma kanye nezimpawu zeleveli yokuvikela izinto zisho izinga lokuvikela. Ngokwesibonelo, Imishini yokuphepha eyisisekelo imakwe ngokuthi ia, ib, noma ic.
2. Ngokusekelwe kuphawu lohlobo lwemishini:
Ukuhlanganisa uhlobo lwesisetshenziswa kanye nezimpawu zeleveli yokuvikela kukhombisa izinga lokuvikela. Ngokwesibonelo, Ikilasi I (izimayini) imishini imakwe ngokuthi Ma noma Mb (M emele owami); Ikilasi III (ifektri, igesi) imishini imakwe ngokuthi Ga, Gb, noma Ge (G yegesi).
Kubalulekile ukuqonda ukuthi amazinga okuvikela okokusebenza kanye namazinga okuvikela ukuqhuma ayimiqondo ehlukile evame ukudideka ekusebenzeni. Izinga lokuvikela liyabonisa “ukwethembeka,” kuyilapho izinga lokuvikela ukuqhuma libonisa “igesi evuthayo izakhiwo kanye nemishini izici zesakhiwo.” Ngokwesibonelo, endaweni yezimboni enobungozi obuqhubekayo bokuqhuma kwe-hydrogen (Indawo 0), izinto zokuphepha ezidingekayo zingaba Izinga ia, I-Explosion-Proof Level IIC. Ngokuvamile i-hydrogen ukulungiselelwa kobungozi (Indawo 1), Izinga ib, Imishini yokuphepha ye-IIC engaphakathi ingahlangabezana nezidingo, nakuba Level ia, Imishini ye-IIC nayo ingafaneleka.