Umtshina wegesi enetyhefu, eli gama lobuchwephesha livakala lingaqhelekanga, kwaye alifumaneki kubomi obuqhelekileyo, ngoko siyazi kancinci malunga nolu lwazi, kodwa kumashishini athile, olu hlobo lwezixhobo luyafuneka ukwenza umsebenzi walo.Sinikwe umsebenzi, masingene kweli lizwe lingaqhelekanga lezibizo kwaye sifunde ulwazi oluthile lokhuseleko.
Umtshina weGesi enetyhefu - Isetyenziselwa ukufumanisa iigesi ezinetyhefu (ppm) kwindawo engqongileyo.Iigesi ezifana nekhabhon monoxide, ihydrogen sulfide kunye nehydrogen zinokubonwa.Izichongi zerhasi enetyhefu zahlulwe zaba zizixhobo ezikhuselekileyo zegesi eyityhefu kunye nezixhobo zokujonga igesi eyityhefu engatshiyo.Iimveliso ezikhuselekileyo ngokwangaphakathi ziimveliso ezikhuselekileyo ezinokuthi zisetyenziswe kwiimeko ezinobungozi kakhulu.
Iimpawu: 0, 2, 4 ~ 20, 22mA imveliso yangoku / uphawu lwebhasi yeModbus;umsebenzi wokukhusela ngokuzenzekelayo ngokuchasene nokutshatyalaliswa kwegesi ephezulu;ukuchaneka okuphezulu, inzwa echasene netyhefu evela kumazwe angaphandle;ii-cable inlets ezimbini, ezilungele ukufakwa kwisiza;igumbi legesi elizimeleyo Isakhiwo kunye nenzwa kulula ukuyitshintsha;iseti yonxibelelwano olucwangcisekileyo ujongano lojongano;umkhondo we-zero ngokuzenzekelayo kunye nembuyekezo yobushushu;ibakala lokuthintela uqhushumbo yi-ExdⅡCT6.
Umgaqo osebenzayo: Umtshini wegesi ovuthayo / onetyhefu uthatha iisampulu zombane kwi-sensor, kwaye emva kokucubungula idatha yangaphakathi, iziphumo ze-4-20mA zangoku okanye uphawu lwebhasi ye-Modbus ehambelana nokugxininiswa kwegesi ejikelezileyo.
Izichongi zegesi enetyhefu kwizixhobo zokulwa nomlilo zihlala zifakwa kumashishini epetrochemical.Ithini ingcaciso yofakelo lwezichongi zegesi eyityhefu “kwiKhowudi yoYilo lweGesi eNtshayo kunye neGesi eyiNxulu eFundiweyo kunye neAlarm kumaShishini ePetrochemical” njengoko kuxelwe zii-arhente zikarhulumente?Iinkcukacha zofakelo lwezichongi zegesi eyityhefu zidweliswe ngezantsi apha ukunika isikhokelo kuye wonke umntu ukuba afakele izixhobo ezibonisa igesi eyityhefu.
I-SH3063-1999 “Igesi eNyusayo yamaShishini ePetrokhemikhali kunye neGasi enetyhefu yokuFunyaniswa koYilo lweAlarm” ichaza:
I-1) Izixhobo zokujonga igesi enetyhefu kufuneka zifakwe kwiindawo ezingenazo iimpembelelo, ukungcangcazela, kunye nokuphazamiseka okunamandla kwentsimi ye-electromagnetic, kunye nokukhutshwa okungekho ngaphantsi kwe-0.3m kufuneka kushiywe ngeenxa zonke.
2) Xa ufumanisa iigesi ezinobuthi kunye neziyingozi, umtshini kufuneka ufakwe ngaphakathi kwe-1m ukusuka kumthombo wokukhululwa.
a.Xa ufumanisa iigesi ezinobuthi kunye nezinobungozi ezilula kunomoya ezifana ne-H2 kunye ne-NH3, i-detector yegesi enetyhefu kufuneka ifakwe ngaphezu komthombo wokukhululwa.
b.Xa ufumanisa iigesi ezinobuthi kunye neziyingozi ezinzima kunomoya ezifana ne-H2S, CL2, SO2, njl., i-detector yegesi enetyhefu kufuneka ifakwe ngaphantsi komthombo wokukhululwa.
c.Xa ufumanisa iigesi ezinobuthi kunye neziyingozi ezifana ne-CO kunye ne-O2 i-gravity ethile isondele kumoya kwaye ixutywe ngokulula nomoya, kufuneka ifakwe kwindawo ekulula ukuyiphefumla.
3) Ufakelo kunye nocingo lwezixhobo zokujonga igesi eyityhefu luya kuthobela izibonelelo ezifanelekileyo ze-GB50058-92 “IKhowudi yoYilo lwaMandla oMbane woQhubhozo kunye neeNdawo eziBubungozi boMlilo” ukongeza kwiimfuno ezichazwe ngumvelisi.
Ngamafutshane: ukufakwa kwezixhobo zegesi ezinetyhefu kufuneka kube ngaphakathi kwemitha ye-1 kufutshane neendawo ezivuzayo ezinje ngeevalvu, ujongano lwemibhobho, kunye neendawo zegesi, ngokusondeleyo kangangoko, kodwa ungachaphazeli ukusebenza kwezinye izixhobo, kwaye zama ukuphepha ukushisa okuphezulu, indawo yomswakama ophezulu kunye neempembelelo zangaphandle (ezifana nokutshiza kwamanzi, ioli kunye nokwenzeka komonakalo womatshini.) Kwangaxeshanye, kufuneka kuqwalaselwe ukugcinwa lula kunye nokulinganisa.
Ukongeza kokunikela ingqalelo ekufakeni okuchanekileyo kunye nokusetyenziswa kwee-detectors zegesi ezinobuthi, ukugcinwa kokhuseleko lomatshini nakho kuyinkalo engenakunakwa.Izixhobo zokulwa nomlilo zinexesha elithile lokuphila, kwaye emva kwexesha lokusetyenziswa, kuya kubakho iingxaki zolunye uhlobo okanye olunye, kwaye kuyafana nakwizixhobo zegesi ezinobuthi.Emva kokufaka i-detector yegesi enetyhefu, ezinye iimpazamo eziqhelekileyo zinokuthi zenzeke emva kokusebenza ixesha elithile.Xa udibana nesiphene, ungabhekisa kwezi ndlela zilandelayo.
1. Xa ukufundwa kuphambuka kakhulu kwinto eyiyo, isizathu sokungaphumeleli sinokuthi sitshintshe uvakalelo okanye ukungaphumeleli kwenzwa, kwaye inzwa inokuphinda ihlaziywe okanye ithathelwe indawo.
2. Xa isixhobo sihluleka, ingaba yi-wiring ekhululekile okanye isiphaluka esifutshane;inzwa yonakele, ikhululekile, isiphaluka esifutshane okanye i-concentration ephezulu, unokujonga i-wiring, itshintshe inzwa okanye uhlaziywe kwakhona.
3. Xa ufundo lungazinzanga, lusenokuba ngenxa yokuphazamiseka kokuhamba komoya ngexesha lokulinganisa, ukungaphumeleli kwenzwa, okanye ukungaphumeleli kwesekethe.Ungaphinda uhlengahlengise, ubuyisele inzwa, okanye uyithumele kwinkampani ukuze ilungiswe.
4. Xa imveliso yangoku idlula i-25mA, i-circuit output yangoku iphosakele, kucetyiswa ukuba uyibuyisele kwinkampani ukuze igcinwe, kwaye ezinye iimpazamo zingabuyiselwa kwinkampani ukuze zigcinwe.
Ixesha lokuposa: Jun-06-2022