Umtshina wegesi enobuthi, leli gama lochwepheshe lizwakala lingajwayelekile, futhi alifinyeleleki empilweni evamile, ngakho-ke sazi okuncane kakhulu ngalolu lwazi, kodwa kwezinye izimboni ezithile, lolu hlobo lwemishini luyadingeka ukwenza umsebenzi walo.Ngokunikezwa komsebenzi, masingene kulo mhlaba ongaziwa wamabizo futhi sifunde ulwazi oluthile lokuphepha.
Umtshina Wegesi Enobuthi - Usetshenziselwa ukuthola amagesi anobuthi (ppm) endaweni ezungezile.Amagesi afana ne-carbon monoxide, i-hydrogen sulfide ne-hydrogen angatholwa.Izitholi zegesi enobuthi zihlukaniswe zibe izitholi zegesi enobuthi eziphephile ngaphakathi kanye nezitholi zegesi enobuthi ezingashi.Imikhiqizo ephephile ngaphakathi iyimikhiqizo ephephile ngaphakathi engasetshenziswa ezimeni eziyingozi kakhulu.
Izici: 0, 2, 4 ~ 20, 22mA okukhiphayo kwamanje / isignali yebhasi ye-Modbus;umsebenzi wokuvikela okuzenzakalelayo ngokumelene nokushaqeka kwegesi ephezulu yokugxila;ukunemba okuphezulu, inzwa engenisiwe elwa nobuthi;ama-cable inlet amabili, alungele ukufakwa endaweni;Igumbi elizimele legesi Isakhiwo kanye nenzwa kulula ukushintshwa;isethi yezindawo zokuphuma zokuxhuma ezihlelekayo;ukulandelela okuzenzakalelayo kwe-zero kanye nesinxephezelo sezinga lokushisa;Ibanga lokuvikela ukuqhuma yi-ExdⅡCT6.
Umgomo wokusebenza: Umtshina wegesi ovuthayo/onobuthi usampula isignali kagesi kunzwa, futhi ngemva kokucubungula idatha yangaphakathi, ukhipha isignali yamanje engu-4-20mA noma isignali yebhasi ye-Modbus ehambisana nokugxiliswa kwegesi ezungezile.
Izitholi zegesi ezinobuthi emishinini yokulwa nomlilo zivame ukufakwa emabhizinisini e-petrochemical.Ithini imininingwane yokufakwa kwezitholi zegesi enobuthi “kuKhodi Yokuklama Igesi Elivuthayo kanye Nokutholwa Kwegesi Enobuthi kanye ne-alamu ku-Petrochemical Enterprises” eshiwo ama-ejensi kahulumeni?Imininingwane yokufaka yezitholi zegesi enobuthi ibalwe ngezansi ukuze inikeze umhlahlandlela wawo wonke umuntu ukuthi afake izitholi zegesi enobuthi.
I-SH3063-1999 “Petrochemical Enterprises Commbustible Gas and Toxic Gas Detection Alarm Design Specification” ikhomba:
1) Izitholi zegesi enobuthi kufanele zifakwe ezindaweni ezingenamthelela, ukudlidliza, nokuphazamiseka kwenkundla kazibuthe kagesi okuqinile, futhi imvume engengaphansi kuka-0.3m kufanele ishiywe nxazonke.
2) Uma uthola amagesi anobuthi nayingozi, umtshina kufanele ufakwe phakathi kwe-1m ukusuka emthonjeni wokukhulula.
a.Uma kutholwa amagesi anobuthi nayingozi alula kunomoya njenge-H2 ne-NH3, isitholi segesi enobuthi kufanele sifakwe ngaphezu komthombo wokukhipha.
b.Uma uthola amagesi anobuthi nayingozi asinda kunomoya njenge-H2S, CL2, SO2, njll., umtshina wegesi enobuthi kufanele ufakwe ngaphansi komthombo wokukhipha.
c.Uma uthola amagesi anobuthi nayingozi njenge-CO ne-O2 amandla adonsela phansi athile asondelene nomoya futhi axutshwe kalula nomoya, kufanele afakwe endaweni okulula ukuyiphefumula.
3) Ukufakwa nokufaka izintambo kwezitholi zegesi enobuthi kuzothobelana nezinhlinzeko ezifanele ze-GB50058-92 “Ikhodi Yokuklama Amandla Kagesi Wokuqhuma Nezindawo Eziyingozi Zomlilo” ngaphezu kwezimfuneko ezicaciswe umenzi.
Ngamafuphi: ukufakwa kwezitholi zegesi enobuthi kufanele kube phakathi kwemitha eyi-1 eduze nezindawo ezivuza kalula njengama-valve, izixhumanisi zamapayipi, nezindawo zokukhipha igesi, kuvaleke ngangokunokwenzeka, kodwa kungaphazamisi ukusebenza kwezinye izinto zokusebenza, futhi zama ukugwema izinga lokushisa eliphezulu, imvelo enomswakama ophezulu kanye namathonya angaphandle (njengamanzi afafazayo, uwoyela kanye nethuba lokulimala kwemishini.) Ngesikhathi esifanayo, kufanele kucatshangelwe ukuze kube lula ukugcinwa nokulinganisa.
Ngaphezu kokunaka ukufakwa nokusetshenziswa okufanele kwezithonjana zegesi enobuthi, ukugcinwa kokuphepha komshini nakho kuyisici esingenakuzitshwa.Imishini yokucisha umlilo inesikhathi esithile sokuphila, futhi ngemva kwesikhathi esithile sokusetshenziswa, kuyoba nezinkinga zohlobo oluthile, futhi kunjalo nangemishini yokubona igesi enobuthi.Ngemva kokufaka umtshina wegesi enobuthi, amanye amaphutha avamile angase avele ngemva kokusebenza isikhathi esithile.Lapho uhlangabezana nephutha, ungabheka izindlela ezilandelayo.
1. Uma ukufundwa kuphambuka kakhulu kokwangempela, imbangela yokwehluleka kungase kube ukuguqulwa kokuzwela noma ukwehluleka kwenzwa, futhi inzwa ingalinganiswa kabusha noma ishintshwe.
2. Uma ithuluzi lihluleka, kungase kube i-wiring exekethile noma i-short circuit;inzwa ilimele, ikhululekile, isifunda esifushane noma ukugxila okuphezulu, ungabheka izintambo, ubuyisele inzwa noma ulinganise kabusha.
3. Uma ukufunda kungazinzile, kungase kube ngenxa yokuphazamiseka kokugeleza komoya phakathi nokulinganisa, ukwehluleka kwenzwa, noma ukwehluleka kwesifunda.Ungakwazi ukulinganisa kabusha, ukushintsha inzwa, noma uyithumele emuva enkampanini ukuze ilungiswe.
4. Uma okukhiphayo kwamanje kudlula u-25mA, isekethe yamanje yokuphumayo inephutha, kutuswa ukuthi ibuyiselwe enkampanini ukuze ilungiswe, kanti amanye amaphutha angabuye abuyiselwe enkampanini ukuze alungiswe.
Isikhathi sokuthumela: Jun-06-2022