Isithiyo sokuphepha sokufakwa kokuhlukaniswa kokufaka ilangabi kanye nentuthu
Isingeniso
Ukuphepha nokuvimbela umlilo kubalulekile kunoma iyiphi indawo. Kubaluleke kakhulu ezindaweni eziyingozi ezivame ukuba nomlilo nokuqhuma. Kulokhu, Ukuphepha Kwangaphakathi Izinto zokubona umlilo kanye nezithiyo zokuphepha zangaphakathi zizuzisa kakhulu. Lezi zinhlelo ezikhethekile zenzelwe ukuvimbela imililo nokuqhuma. Zifeza lokhu ngokunciphisa amandla kagesi nawokushisa ohlelweni lwezinto zokubona.
Amaphuzu ayinhloko:
nIzihloli zomlilo eziphephile ngaphakathi ziyizinyathelo zokuphepha ezibalulekile ezindaweni eziyingozi ezinegesi eziqhumayo noma izinto ezivuthayo.
nLolu hlobo lwemishini ekhethekile luqeda ngokuphelele izingozi zokusha ngokunciphisa ngokuqinile ukukhishwa kwamandla okushisa kagesi.
nEmikhakheni enobungozi obukhulu njengamakhemikhali kaphethroli, ukukhiqizwa kwemithi, kanye nokugcinwa kwezinto eziyingozi, lobu buchwepheshe abunakuthathelwa indawo.
nUkuqonda izici kanye nezimo ezifanele zezinhlobo ezahlukene zezinzwa zokuphepha zangaphakathi kuyisici esibalulekile ekwakheni uhlelo lokuvimbela umlilo olunembile.
nUkusebenza kokuphepha kanye nokuzinza kokusebenza kwemishini yokuhlola eqinisekiswe yizinhlangano zomhlaba wonke ezifana I-Atex sekuqinisekiswe ngokusemthethweni.
Isebenza kanjani into yokubona umlilo yokuphepha kwangaphakathi?
nEzindaweni ezivuthayo neziqhumayo njengokucubungula uwoyela negesi, amakhemikhali, kanye nokusanhlamvu, izinto zokuthola umlilo zendabuko zibeka izingozi zokuphepha ngenxa yokuthi kungenzeka ukuthi zikhiqize izinhlansi zikagesi noma ukushisa kakhulu endaweni, kuyilapho izinto zokuthola ukuphepha kwangaphakathi (IS) ziqinisekisa ukusebenza okuphephile ezindaweni eziyingozi ngomklamo okhethekile.
nUbuchwepheshe bayo obuyinhloko busekusetshenzisweni kokunciphisa amandla: ngokulawula ngokunembile amandla amanje kanye nokushisa kusekethe, kuqinisekisa ukuthi imishini ngeke ikhiqize izinhlansi zokushisa noma amazinga okushisa aphezulu ayingozi ngaphansi kwanoma yiziphi izimo zokusebenza. Ukuze kufezwe lo mgomo, uhlelo kumele lufakwe isithiyo sokuphepha - ingxenye ebalulekile efakwe phakathi kwesilawuli se-alamu kanye nemishini ye-IS, engavimba ngempumelelo ukudluliswa kwamandla ngokweqile futhi igcine amandla esekethe engaphansi komkhawulo wokuphepha ngaso sonke isikhathi.
nLo mklamo wokuvikela okabili (umkhawulo wamandla angaphakathi + umgoqo wokuphepha wangaphandle) wenza i-IS detector ibe yisisombululo sokuqapha umlilo esithembeke kakhulu ezindaweni ezinobungozi obukhulu, ngenkathi ihlangabezana nezindinganiso zomhlaba wonke zokumelana nokuqhuma njenge-ATEX.
Ukuthobela imithetho kanye nezindinganiso zezinto zokuthola umlilo zokuphepha zangaphakathi e-UK
E-UK, kunemithetho eqinile yokusetshenziswa kwemishini yokuphepha emlilweni ezindaweni eziyingozi. Ukuthobela le mithetho akuyona nje imfuneko esemthethweni, kodwa futhi kubalulekile ekuqinisekiseni ukuphepha kwabasebenzi kanye nokusebenza okubushelelezi.
Isethi ebalulekile yemithetho yi- Imithethonqubo ye-AtexLe mithetho ithathwe eziqondisweni ze-EU ezihlose ukuxhumanisa amazinga okuphepha emishini esetshenziswa ezindaweni lapho kungase kwenzeke khona ukuqhuma.
Imithethonqubo ye-ATEX ibalulekile kunoma ubani okhiqiza, othengisa, noma osebenzisa imishini yokuphepha ezindaweni lapho kungase kwenzeke khona ukuqhuma. Ezindaweni eziyingozi ngaphakathi kwe-European Union (kufaka phakathi i-UK), yonke imishini kanye nezinhlelo zokuvikela kumele zihambisane nemithethonqubo ye-ATEX.
Okujwayelekile | Incazelo |
Isiqondiso se-ATEX 2014/34/EU | Lokhu kuhlanganisa imishini kanye nezinhlelo zokuzivikela ezisetshenziswa ezindaweni lapho kungase kwenzeke khona ukuqhuma. |
I-IEC 60079 | Isethi yemithetho yamazwe ngamazwe yokuthi ungaklama kanjani, ufake, futhi usebenzise kanjani imishini kagesi ngokuphephile ezindaweni eziqhumayo. |
Ukuqonda nokunamathela kule mithetho kubalulekile. Lokhu kusiza ukuqinisekisa ukuphepha lapho usebenzisa izinto zokubona umlilo ezisetshenziswa ngaphakathi ezindaweni eziyingozi.
Khetha izithiyo zokuphepha zangaphakathi ezifanele
Thina, iBeijing Pinghe, njengomhlinzeki wezithiyo ezisezingeni eliphezulu, sinohlelo lokuthuthukisa oluhlose ukunciphisa usayizi obonakalayo wezithiyo, ukuzenza zibe lula futhi zibe lula ukuzisebenzisa, ukwenza kube lula ukuzifaka, ukunciphisa ingozi yokwehluleka, kanye nokuhlinzeka ngezithiyo ezifanele ngokuphelele izinhlelo zenqubo.
I-PHD-11TN-11 kanye ne-PHD-22TN-1111 zethu zenzelwe ngqo ukusetshenziswa nemishini yokuhlola intuthu.
Ukufakwa kwesignali kwezinto zokuthola ilangabi kanye nentuthu kuyizivimbelo zokuphepha ezihlukanisiwe, ezinganikeza amandla okuhlukanisa izinto zokuthola ilangabi ezindaweni eziyingozi. Izinto zokuthola ilangabi zikhiqiza izimpawu ezingu-0-40mA ezihlukanisiwe ezindaweni eziyingozi futhi zidluliselwe ezindaweni eziphephile, zidlala indima ekulenzeni i-alamu yentuthu. Lo mkhiqizo unikwe amandla yisekethe yokuphuma futhi ufanelekela izinhlelo ze-DCS/PLC ezisebenza nge-loop.
Lo mkhiqizo awudingi ukunikezwa kwamandla okuzimele, futhi amatheminali okufaka nokukhipha ahlukanisiwe.
