I-Double Block And Ophe Ball Valve
Iyini i-Double block kanye ne-bleed ball valve?
I-Double Block And Ophe Ball Valveiyivalvu yebhola eklanyelwe ngokukhethekile.
Ngokuqondene nohlelo lwe-Double block kanye ne-bleed valve, kunezincazelo ezimbili nge-API6D kanye ne-OSHA.
I-API 6D ichaza i-I-Double Block kanye ne-Opered ValveUhlelo “njengevalvu eyodwa enezindawo zokuhlala ezimbili, lapho ivaliwe, enikeza isivalo ngokumelene nokucindezela okuvela emaphethelweni womabili evalvu ngendlela yokudlulisa/ukukhipha igazi emgodini ophakathi kwezindawo zokuhlala.”
I-OSHA ichaza i-I-Double Block kanye ne-Opered ValveUhlelo “njengokuvalwa komugqa, ipayipi, noma ipayipi ngokuvala nokukhiya noma ukumaka amavalvu amabili angaphakathi kanye nokuvula nokukhiya noma ukumaka ivalvu yokudonsa noma yokungenisa umoya emgqeni ophakathi kwamavalvu amabili avaliwe”.
iI-NORTECH block ephindwe kabili kanye ne-valve yebhola ephuma igaziyakhelweNgokuhlanganisa ama-valve amabili abe umzimba owodwa, umklamo wama-valve amabili unciphisa isisindo kanye nezindlela zokuvuza ezingaba khona ngenkathi kuhlangatshezwana nezidingo ze-OSHA zokuvinjwa kabili kanye nokuphuma kwegazi.
Izici eziyinhloko ze-Double block kanye ne-bleed ball valve
I-Double Block And Ophe Ball Valvekuyinhlanganisela yamavalvu ebhulokhi/okuhlukanisa eyodwa noma ngaphezulu, ngokuvamile amavalvu ebhola, kanye namavalvu e-bleed/vent eyodwa noma ngaphezulu, ngokuvamile amavalvu ebhola noma enaliti. Inhloso yesistimu ye-block kanye ne-bleed valve ukuhlukanisa noma ukuvimba ukugeleza koketshezi ohlelweni ukuze uketshezi oluvela phezulu lungafiki kwezinye izingxenye zesistimu ezingezansi. Lokhu kwenza onjiniyela bakwazi ukuphuma noma ukukhipha noma ukukhipha uketshezi olusele ohlelweni ohlangothini olungezansi ukuze benze uhlobo oluthile lomsebenzi (ukulungiswa/ukulungiswa/ukufakwa esikhundleni), ukusampula, ukuphambuka kokugeleza, ukujova ngamakhemikhali, ukuhlola ubuqotho bokuvuza njll.
Iyunithi EyodwaI-Double Block kanye ne-Opered Valveinikeza ibhlogo eliphindwe kabili futhi liphuma igazi ku-valve eyodwa. Lesi sitayela singahlukanisa amapayipi kuzo zombili izinhlangothi ze-valve ukuze kukhishwe umoya/kuphume igazi ku-valve cavity phakathi kwezihlalo.
Ukusebenzisa iyunithi eyodwa enebhulokhi eliphindwe kabili kanye nohlelo lwevalvu eliphuma igazi uma kuqhathaniswa namavalvu amathathu ahlukene kusindisa isikhathi sokufakwa, isisindo ohlelweni lwamapayipi, kanye nesikhala. Lo mklamo unezinzuzo zokusebenza,
- Kunezindlela ezimbalwa kakhulu zokuvuza ezingaba khona ngaphakathi kwesigaba samabhulokhi amabili kanye nesigaba sokuphuma kwegazi sepayipi.
- Amavalvu agcwele imbobo futhi anendawo yokugeleza engaphazanyiswa, anokwehla okuncane kwengcindezi kuyo yonke iyunithi.
- Amapayipi lapho kufakwa khona la ma-valve nawo angafakwa ngaphandle kwezinkinga.
- Zonke izingxenye zamavalvu zigcinwe kuyunithi eyodwa, isikhala esidingekayo sokufakwa sincishiswa kakhulu ngaleyo ndlela sikhulula isikhala seminye imishini ebalulekile.
- Kudingeka izikhathi ezimfushane zokukhipha amanzi.
Ukucaciswa kobuchwepheshe kwe-Double block kanye ne-bloed ball valve
Umbukiso Womkhiqizo:
Ukusetshenziswa kwama-valve ebhola aphindwe kabili kanye nebhola eliphuma igazi
Ama-valve ebhola aphindwe kabili futhi aphuma igaziZisetshenziswa kakhulu embonini kawoyela negesi, kodwa futhi zingaba usizo kwezinye izimboni eziningi. Ngokuvamile zisetshenziswa lapho kudingeka khona ukopha emgodini we-valve, lapho amapayipi edinga ukuhlukaniswa ukuze kulungiswe, noma kunoma yiziphi ezinye izimo:
- Vimbela ukungcoliswa komkhiqizo.
- Susa imishini ekusethweni ukuze ihlanzwe noma ilungiswe.
- Ukulinganiswa kwemitha.
- Isevisi yoketshezi eduze kwemigwaqo yamanzi noma komasipala.
- Ukudluliselwa kanye nokugcinwa.
- Ukujova ngamakhemikhali kanye nokuthatha amasampula.
- Hlukanisa amathuluzi anjengezinkomba zokucindezela kanye nama-lever gauges.
- Inqubo eyinhloko yomusi.
- Vala bese ukhipha umoya ezintweni zokulinganisa umfutho.
