Ukukhetha okunengqondo kohlobo lwe-valve kunganciphisa ukusetshenziswa kwezinto ezibonakalayo, ukunciphisa ukumelana nendawo kanye nokusetshenziswa kwamandla, kusize ukufakwa nokunciphisa ukulungiswa.Kulesi sihloko, i-Dongsheng Valve yethule kuwe ukuthi yimaphi ama-valve asetshenziselwa amanzi olwandle.
1.Ivalve yokuvala
Ububanzi bepayipi lenqubo ekukhishweni kukasawoti emanzini olwandle ngezinga elikhulu ngokuvamile kuvame ukuba yi-DN300-DN1600, okungaphezu komthamo wokusetshenziswa jikelele.ama-valve ebholanama-valve embulunga.Uma kuqhathaniswa nei-valve yesangowezinga elifanayo (Z41H), iuvemvane valveinezinzuzo zesakhiwo esilula, ukumelana nokugqwala okulula, ubude bokufaka obufushane, ukusetshenziswa okuncane kwensimbi, kanye nama-coefficients okumelana nengxenye afanayo we-valve.Kungcono ukonga futhi kuyasebenza ukukhetha i-valve uvemvane njenge-valve yokuvala.Ngokwezinga lokucindezela, ama-valve ovemvane angahlukaniswa abe amavalve ovemvane anengcindezi ephansi kanye namavalve ovemvane anomfutho ophezulu.
I-valve ye-butterfly enengcindezi ephansi
I-valve uvemvane enengcindezi ephansi ingakwazi ukusebenzisa i-valve uvemvane lwerabha olungenaphini oluphakathi nendawo.Uma i-valve uvemvane ingaphansi noma ilingana ne-DN500, kwamukelwa ukuxhumana kwe-wafer.Lapho i-valve uvemvane ≥DN550, ukuxhumana kwe-flange kwamukelwa.Lapho ububanzi be-valve uvemvane bungaphansi noma bulingana no-6in.(DN150), amandla okuvula angaphansi kuka-400N, futhi asetshenziswa isibambo.Lapho ububanzi be-valve uvemvane ingu-≥8in.(DN200), isetshenziswa ngebhokisi legiya.Ngenxa yokucindezela okuphansi emuva kwe-valve yokucindezela okuphansi, ukusetshenziswa kwesakhiwo se-centerline ngeke kwandise i-torque enkulu.Lesi sakhiwo sinezimpawu ezimbili.Uphawu oluyinhloko lutholwa ngamandla okuqinisa ngaphambili epuleti levemvane kanye nesihlalo se-valve, futhi uphawu lwesibili lutholakala ngokulingana kokuphazamiseka kwesiqu se-valve kanye nembobo yesihlalo se-valve.Njengoba isiqu se-valve sihlukanisiwe ngokuphelele nendawo futhi singafaki amanzi olwandle, isiqu se-valve singenziwa nge-2Cr13 noma izinto ezifanayo.Umzimba we-valve wenziwe nge-ductile iron lining EPDM ukwandisa ukusebenza kokuvala.Njengoba umzimba we-valve ungathintani nendawo, izidingo zokusebenza ezibonakalayo zomzimba we-valve ziyancipha.
I-valve ye-butterfly enengcindezi ephezulu
Uma ukhetha izinto ze-valve ze-butterfly ezicindezelayo, ngaphezu kokucabangela izici zokubola kwamanzi olwandle, ukumelana nokucindezela kwezinto ezibonakalayo kudinga ukucatshangelwa.Lapho ingcindezi yokusebenza ingu-69bar futhi ingcindezi enkulu ingu-≥85bar (ingcindezi yokuvala yephampu ye-osmosis ephezulu yokucindezela), ngenxa yomfutho ophakeme wasemuva, ukuze kuncishiswe i-Torque, i-valve butterfly yokucindezela okuphezulu ithatha isakhiwo esine-eccentric ephindwe kabili.Uma usayizi ojwayelekile wevalve uvemvane ingu-≤DN500, kwamukelwa ukuxhumana kwe-wafer.Uma usayizi ojwayelekile wevalve uvemvane ingu-≥DN550, kwamukelwa ukuxhumana kwe-flange.Ibanga lokucindezela yi-CI600, umzimba we-valve nepuleti levemvane zenziwe ngensimbi enezigaba ezimbili engu-ASTMA995GR.4A.Ngenxa yokuthi isiqu se-valve sivezwe phakathi nendawo, isiqu se-valve senziwe nge-ASTMA276UNS31803, futhi impahla yesihlalo sevalvu yi-RPTFE.Ukwakheka kwe-eccentric ephindwe kabili kwandisa i-coefficient yendawo yokumelana.Ipuleti uvemvane kanye nesiqu se-valve kudinga izikhonkwane okufanele zilungiswe, futhi izidingo zokunqanda ukugqwala kwezikhonkwane ziyafana nezinye izingxenye zokugeleza.
I-valve yokuhlola ivamise ukufakwa lapho kuphuma khona iphampu yamanzi olwandle ukuze kuvinjwe ukugeleza kwamanzi olwandle nesando samanzi ukuthi kungalimazi okokusebenza.Njengamanje, ama-valve okuhlola asetshenziswa kumaphrojekthi okukhipha usawoti emanzini olwandle ahlanganisa ama-valve okuhlola uvemvane avala kancane, anerabha ngokugcwele.ama-valve okuhlola i-butterfly wafer,ama-valve okuhlola i-flap wafer eyodwakanye nama-valve okuhlola i-flap duplex yensimbi eyodwa.
Ivalvu yokuhlola uvemvane evala kancane
Impahla eyinhloko ye-valve yokuhlola uvemvane evala kancane i-ductile iron.Isando samanzi esivala kancane esisebenza ngomshini noma se-hydraulic sinokumelana kahle nesando samanzi futhi sifanele ukusetshenziswa komfutho ophansi.Ukusetshenziswa kwesigaba samanzi omkhiqizo wephrojekthi yokukhipha usawoti emanzini olwandle.
Ivalvu yokuhlola i-wafer yohlobo lwe-butterfly enerabha ngokugcwele
Ivalvu yokuhlola i-wafer yohlobo lwe-butterfly enerabha ngokugcwele iwukuthuthuka kokunqanda ukugqwala kwevalvu yokuhlola uhlobo lovemvane oluvala kancane.Umzimba we-valve nesiqu kufakwe irabha ngokugcwele, futhi i-valve clack ingenziwa nge-duplex stainless steel noma i-nickel aluminium bronze.Lolu hlobo lwevalvu lusethwe lapho kuphuma khona iphampu yamanzi olwandle anengcindezi ephansi futhi ifanele ukufakwa kumapayipi anobubanzi obukhulu.Ububanzi obujwayelekile be-valve buphakathi kwe-DN200-1200.Kuyadingeka ukunaka izidingo zesikhala sokufakwa kwe-valve ngesikhathi sokuklama.Ukufakwa okungalungile kwevalvu kuzokwenza ukuthi idiski ye-valve kanye nentwasahlobo kusebenze esiqwini se-valve isikhathi eside, kucekele phansi uphawu lapho kuxhunywana khona nomzimba we-valve nesiqu se-valve, kungene phakathi nendawo, futhi kubangele ukuba umzimba wevalvu ugle.
I-valve yokuhlola i-wafer ye-flap eyodwa
I-valve yokuhlola i-wafer yeqabunga elilodwa inesakhiwo esilula nendawo encane yokufaka, futhi ingasetshenziswa ngaphansi kwengcindezi ephansi noma izimo zokucindezela okukhulu.I-valve yamukela insimbi engagqwali eyi-duplex iyonke, enokumelana okuhle nokugqwala kwamanzi olwandle, isisindo esilula, ingafakwa ivundlile futhi ibheke phezulu, futhi kulula ukuyisebenzisa.Embonini yokukhipha usawoti emanzini olwandle, kuvame ukusetshenziswa ivalve ye-wafer eyodwa ene-valve ≤DN250.Uma usayizi ojwayelekile wevalvu mkhulu kune-DN250, isando samanzi sinomphumela osobala futhi umsindo wesenzo uba phezulu.I-valve yokuhlola i-flap eyodwa enobubanzi obukhulu isetshenziswa kakhulu kumapayipi egesi.I-valve ine-bore engagcwele, ukuvulwa okuphezulu kwe-valve flap ngu-45 °, i-coefficient yokumelana iyakhula, futhi umthamo wokugeleza uyancipha.
Isikhathi sokuthumela: Sep-30-2021