Emhlabeni wamavalvu ezimboni, ama-valve ebhola e-double block and bleed (DBB) agqama njengenketho eguquguqukayo nethembekile yezinhlelo zokusebenza ezahlukahlukene.Ngokuklama nokusebenza okuyingqayizivele, amavalvu ebhola e-DBB anikeza izinzuzo eziningi eziwenza abe yisinqumo esidumile kuzo zonke izimboni ezihlukahlukene.
Enye yezinzuzo eziyinhloko ze-valve yebhola ye-DBB yikhono layo lokuhlinzeka ngokuhlukaniswa kabili, okusho ukuthi ingahlukanisa ukugeleza komfula kanye nokwehla komfula.Lesi sici sibalulekile ezinhlelweni zokusebenza lapho ukuphepha nokuthembeka kubaluleke kakhulu, njengamafutha negesi, i-petrochemical kanye nezitshalo zokucubungula amakhemikhali.Amavalvu ebhola e-DBB ahlinzeka ngokuhlukaniswa kabili ukusiza ukuvimbela ubungozi bokuvuza nokuqinisekisa ubuqotho besistimu.
Ngaphezu kwalokho, ama-valve ebhola e-DBB afaka umsebenzi wokopha okhulula ingcindezi evaleleke phakathi kwamaphoyinti amabili okuzihlukanisa.Lesi sici sibalulekile ezinhlosweni zokunakekela nokuhlola njengoba zenza o-opharetha bacindezele ngokuphephile isistimu ngaphandle kwesidingo sezisetshenziswa ezengeziwe noma izinqubo.Amandla okukhipha umoya we-valve nawo asiza ukuthuthukisa ukuphepha nokusebenza kahle kwesistimu.
Ngaphezu kwezinzuzo zabo zokusebenza, ama-valve ebhola e-DBB ayaziwa nangokuhlala kwawo nokuthembeka.Enziwe ngezinto ezisezingeni eliphezulu njengensimbi engagqwali, i-carbon steel, ne-alloy steel, lawa mavalvu angakwazi ukumelana nokucindezela okuphezulu nezinga lokushisa futhi afanele ukusetshenziswa ezindaweni ezinokhahlo zezimboni.Ukwakhiwa kwazo okuqinile kanye nezidingo zokunakekelwa okuncane kuzenza zibe ukukhetha okungabizi kakhulu ukuze zisetshenziswe isikhathi eside.
Ukuguquguquka kwe-valve yebhola ye-DBB kudlulela ekuzivumelaniseni nezimo ezihlukahlukene zemidiya nezimo zokusebenza.Kungakhathaliseki ukuthi uphatha amakhemikhali abolayo, ama-slurries abrasive noma isitimu esishisa kakhulu, lawa mavalvu aklanyelwe ukunikeza ukusebenza okuthembekile nokuvalwa okuqinile, ukuqinisekisa ukuphepha nokusebenza kahle kwesistimu.Ikhono labo lokusebenza ezindaweni ezahlukene libenza babe ukukhetha kokuqala kwezinqubo ezihlukahlukene zezimboni.
Ukwengeza, ukwakheka okuhlangene kwamavalvu ebhola e-DBB kuwenza kube lula ukuwafaka nokuwahlanganisa ezinhlelweni ezikhona zamapayipi.Zonga isikhala futhi kulula ukuzinakekela, zisiza ekwandiseni ukusebenza kahle okuphelele, ukunciphisa isikhathi sokuphumula kanye nokunciphisa isidingo sokulungiswa njalo noma ukushintshwa.
Kafushane, i-valve yebhola ye-DBB ihlanganisa ukuhlukaniswa okukabili, ukusebenza kokukhipha umoya, ukuqina kanye nokuvumelana nezimo, okuyenza ibe ukukhetha okuguquguqukayo nokuthembekile kwezicelo zezimboni.Ikhono layo lokuqinisekisa ubuqotho besistimu, ukuphepha nokusebenza kahle kuyenza ibe yimpahla ebalulekile ezimbonini kusukela kuwoyela negesi kuya ekucutshungulweni kwamakhemikhali.Ngokusebenza kwawo okuqinisekisiwe kanye nezinzuzo eziningi, ama-valve ebhola e-DBB ahlala eyisixazululo sokuzikhethela ukuhlukaniswa okubalulekile nokulawula izinhlelo zokusebenza embonini.
Isikhathi sokuthumela: Mar-30-2024