Ukukhetha okunengqiqo kohlobo lwevalve kunokunciphisa ukusetyenziswa kwezinto eziphathekayo, ukunciphisa ukuchasana kwendawo kunye nokusetyenziswa kwamandla, ukuququzelela ukufakwa kunye nokunciphisa ukulungiswa.Kweli nqaku, iValve ye-Dongsheng ikwazisile ukuba zeziphi iivalve ezisetyenziselwa amanzi olwandle.
1.Ivalve yokuvala
Idayamitha yombhobho wenkqubo enkulu ekususweni kwetyuwa emanzini olwandle ngokubanzi yi-DN300-DN1600, engaphaya kwemida yokusetyenziswa ngokubanzi.iivalve zebholakunye neevalvu zeglowubhu.Xa kuthelekiswa neivalve yesangozomgangatho ofanayo (Z41H), iivelufa butterflyineenzuzo zesakhiwo esilula, ukuxhathisa ukubola, ubude obufutshane bofakelo, ukusetyenziswa kwentsimbi encinci, kunye ne-coefficients yokumelana ne-valve efanayo.Kuyonga kakhulu kwaye kuyasebenza ukukhetha ivalve yebhabhathane njengevalve yokuvala.Ngokwenqanaba loxinzelelo, iivalve zebhabhathane zinokwahlulwa zibe ziivalve zebhabhathane ezinoxinzelelo oluphantsi kunye ne-high-pressure butterfly valves.
Ivalve yebhabhathane yoxinzelelo oluphantsi
Ivalve yebhabhathane enoxinzelelo oluphantsi inokusebenzisa ivalve yebhabhathane yerabha engafakwanga phini.Xa ivalve yebhabhathane ingaphantsi okanye ilingana ne-DN500, uqhagamshelo lwe-wafer luyamkelwa.Xa ivalve yebhabhathane ≥DN550, uqhagamshelo lweflange lwamkelwa.Xa i-diameter yevalve yebhabhathane ingaphantsi okanye ilingana ne-6in.(DN150), amandla okuvula angaphantsi kwe-400N, kwaye iqhutywe ngesibambo.Xa ububanzi bevalve yebhabhathane yi ≥8in.(DN200), iqhutywa ngebhokisi yegiya.Ngenxa yoxinzelelo oluphantsi lwe-valve ye-valve ephantsi, ukusetyenziswa kwesakhiwo se-centerline akuyi kwandisa i-torque eninzi.Esi sakhiwo sinamatywina amabini.Itywina eliphambili lifunyanwa ngamandla okuqinisa kwangaphambili kwepleyiti yebhabhathane kunye nesihlalo sevalve, kwaye itywina lesibini lifunyanwa ngokungena kokuphazamiseka kwesikhondo sevalve kunye nomngxuma wesihlalo sevalve.Ekubeni i-valve stem ihluke ngokupheleleyo kwi-medium kwaye ayithathi amanzi olwandle, i-valve stem ingenziwa nge-2Cr13 okanye izinto ezilinganayo.Umzimba wevalvu wenziwe nge-ductile iron lining EPDM ukwandisa ukusebenza kokutywina.Kuba umzimba wevalve awudibananga nendawo, iimfuno zokusebenza kwesixhobo somzimba wevalvu ziyancipha.
Ivalve yebhabhathane yoxinzelelo oluphezulu
Xa ukhetha izixhobo ze-valve ye-butterfly high-pressure, ngaphezu kokuqwalasela izinto zokubola kwamanzi olwandle, ukunyanzeliswa kwengcinezelo yezinto kufuneka kuthathelwe ingqalelo.Xa uxinzelelo olusebenzayo luyi-69bar kunye noxinzelelo oluphezulu ngu-≥85bar (uxinzelelo lokuvala lwepompo ye-osmosis ephezulu yoxinzelelo), ngenxa yoxinzelelo oluphezulu lwangasemva, ukwenzela ukunciphisa i-Torque, i-valve ye-butterfly ephezulu ithatha isakhiwo se-eccentric ephindwe kabini.Xa ubungakanani obuqhelekileyo bevalve yebhabhathane ≤DN500, uqhagamshelo lwe-wafer luyamkelwa.Xa ubungakanani obuqhelekileyo bevalve yebhabhathane ≥DN550, uqhagamshelo lweflange luyamkelwa.Ibakala loxinzelelo yi-CI600, i-valve body kunye ne-butterfly plate yenziwe ngentsimbi ye-dual-phase steel ASTMA995GR.4A.Ngenxa yokuba isiqu sevalve sisesiphakathini, isiqu sevalve senziwe nge-ASTMA276UNS31803, kwaye isixhobo sesihlalo sevalve yi-RPTFE.Ubume be-eccentric kabini kwandisa i-coefficient yokuchasana kwendawo.I-butterfly plate kunye ne-valve stem idinga izikhonkwane ukuba zilungiswe, kwaye iimfuno ezichasene ne-corrosion yezikhonkwane ziyafana namanye amacandelo okuhamba.
Ivalve yokukhangela idla ngokufakwa kwindawo yokuphuma yempompo yamanzi olwandle ukukhusela umva wamanzi olwandle kunye nehamile yamanzi ekonakaliseni izixhobo.Okwangoku, iivalvu zokutshekisha ezisetyenziswa kwiiprojekthi zokukhutshwa kwetyuwa emanzini olwandle zibandakanya iivalve zokujonga ibhabhathane ezivala kancinci, zifakwe irabha ngokupheleleyo.iivalvu zokukhangela ibhabhathane,iivalvu zokujonga i-flap enyekunye ne-flap eyodwa ye-duplex yentsimbi yokujonga iivalvu.
Ivalve yokujonga ibhabhathane ecothayo
Eyona nto iphambili yevalve yokujonga ibhabhathane evala ngokucothayo yintsimbi ye-ductile.Ihamile yomatshini okanye i-hydraulic evala ngokucothayo yamanzi inokumelana kakuhle nehamile yamanzi kwaye ifanelekile ukusetyenziswa koxinzelelo oluphantsi.Ukusetyenziswa kwecandelo lamanzi emveliso yeprojekthi yokususwa kwetyuwa emanzini olwandle.
Ivalve yokujonga ibhabhathane enerabha enerabha epheleleyo
Ivalve yokukhangela ibhabhathane enerabha egcwele irabha luphuculo lokuchasa ukubola kwevalve yokukhangela ibhabhathane.Umzimba wevalvu kunye nesiqu zenziwe ngerabha ngokupheleleyo, kwaye ivalve clack inokwenziwa ngentsimbi ephindwe kabini okanye nge-nickel aluminiyam yobhedu.Olu hlobo lwevalve lusekwe kwindawo yokuphuma yempompo yamanzi olwandle ephantsi koxinzelelo kwaye ifanelekile ukufakwa kwimibhobho yobubanzi obukhulu.I-diameter ye-valve ekhethiweyo ikuluhlu lwe-DN200-1200.Kuyimfuneko ukunikela ingqalelo kwiimfuno zendawo yokufakela i-valve ngexesha loyilo.Ufakelo olungafanelekanga lwevalve luya kubangela ukuba idiski yevalve kunye nentwasahlobo isebenze kwisiqu sevalve ixesha elide, itshabalalise itywina ekudibaneni nomzimba wevalve kunye nesiqu sevalvu, ingene phakathi, kwaye ibangele ukuba umzimba wevalve udle.
Ivalve yokujonga i-wafer enye
I-valve yokukhangela i-wafer yeqabunga enye inesakhiwo esilula kunye nendawo encinci yokufakela, kwaye ingasetyenziselwa phantsi koxinzelelo oluphantsi okanye iimeko zoxinzelelo oluphezulu.Ivalve ithatha i-duplex steel stainless iyonke, enokumelana nokugqwala kwamanzi olwandle, ubunzima obulula, inokufakwa ngokuthe tye nathe nkqo, kwaye kulula ukuyisebenzisa.Kwisityalo sokukhupha ityuwa emanzini olwandle, ivalve yokukhangela ivalve enye ≤DN250 isetyenziswa ngokubanzi.Xa ubungakanani obuqhelekileyo bevalve bukhulu kune-DN250, isando samanzi sinesiphumo esicacileyo kwaye ingxolo yesenzo iphezulu.Ivalve yokujonga i-flap eyodwa enobubanzi obukhulu isetyenziswa kakhulu kwimibhobho yegesi.I-valve ine-bore engagcwaliyo, ukuvulwa okukhulu kwe-valve flap ngu-45 °, i-coefficient yokumelana iyakhula, kwaye umthamo wokuhamba uyancipha.
Ixesha lokuposa: Sep-30-2021