1 Uhlolojikelele
I-valve uvemvane iyithuluzi elibalulekile ohlelweni lokuphakela amanzi kanye nohlelo lokudonsa amanzi.Ngokuthuthuka kobuchwepheshe bezimboni, izidingo ezehlukene zibekwe phambili ekwakhiweni nasekusebenzeni kwe-valve uvemvane.Ngakho-ke, uhlobo, impahla kanye nefomu lokuxhuma kufanele kukhethwe ngokunengqondo ngokuvumelana nezimo zokusebenza ngesikhathi sokuklama nokukhetha.
I-valve uvemvane iyithuluzi elibalulekile ohlelweni lokuphakela amanzi kanye nohlelo lokudonsa amanzi.Ngokuthuthuka kobuchwepheshe bezimboni, izidingo ezehlukene zibekwe phambili ekwakhiweni nasekusebenzeni kwe-valve uvemvane.Ngakho-ke, uhlobo, impahla kanye nefomu lokuxhuma kufanele kukhethwe ngokunengqondo ngokuvumelana nezimo zokusebenza ngesikhathi sokuklama nokukhetha.
2 Ukuklama
2.1 Isakhiwo
Isiqephu sokuvala (i-butterfly plate) ye-valve ye-butterfly siphakathi nendawo, futhi ithonya layo ekuphikiseni ukugeleza kufanele licatshangelwe ekuklanyeni.
2.1 Isakhiwo
Isiqephu sokuvala (i-butterfly plate) ye-valve ye-butterfly siphakathi nendawo, futhi ithonya layo ekuphikiseni ukugeleza kufanele licatshangelwe ekuklanyeni.
Mayelana nokwakheka kwepuleti uvemvane levalve yovemvane enobubanzi obukhulu, i-AWWA C504 (American Water Supply Engineering Association Standard) ibeka ukuthi ipuleti uvemvane akufanele libe nezimbambo eziphambanayo, futhi ugqinsi lwalo akufanele lube ngaphezu kokuphindwe izikhathi ezingu-2.25 ububanzi isiqu se-valve.
Indawo engenayo amanzi kanye nendawo ephuma amanzi yepuleti levemvane kufanele ihambisane.
Izikulufu zangaphakathi azikwazi ukuphumela ngaphandle kwepuleti levemvane, ukuze zingakhulisi indawo ebheke emanzini.
2.2 I-Rubber seal
Indawo engenayo amanzi kanye nendawo ephuma amanzi yepuleti levemvane kufanele ihambisane.
Izikulufu zangaphakathi azikwazi ukuphumela ngaphandle kwepuleti levemvane, ukuze zingakhulisi indawo ebheke emanzini.
2.2 I-Rubber seal
Ngezinye izikhathi impilo yesevisi ye-valve butterfly valve ifushane, ehlobene nekhwalithi yerabha kanye nobubanzi bokubeka uphawu.Indandatho yokuvala ye-valve ye-butterfly evalwe ngerabha kufanele yenziwe ngezinto zenjoloba ezisezingeni eliphezulu, futhi imithetho yenqubo kufanele ilandelwe ngesikhathi sokubunjwa kokucindezela.Izinga lokushisa le-vulcanization akufanele linyuswe ngokunganaki, futhi isikhathi singafinyezwa, ngaphandle kwalokho kuzokwenza kalula ukuthi indandatho yokuvala iguge futhi iqhekeke.Indawo yokuvalwa kwensimbi ehambisana nendandatho yokuvala irabha kufanele ibe nobubanzi obanele, ngaphandle kwalokho indandatho yokuvala irabha akulula ukuthi ishumekwe.Ukwengeza, ukuma nokubekezelelana kwesikhundla, ukulinganisa, ukunemba, ukushelela, nokunwebeka kwendandatho yokuvala ye-valve yomzimba kanye nepuleti levemvane nakho kuthinta impilo yesevisi yendandatho yokuvala iraba.
2.2 Ukuqina
Ukuqina kuyindaba ebalulekile ekwakhiweni kwama-valve ovemvane, okuhlobene nezici ezifana namapuleti ovemvane, ama-valve shafts kanye nokuxhumana.
Ukuqina kuyindaba ebalulekile ekwakhiweni kwama-valve ovemvane, okuhlobene nezici ezifana namapuleti ovemvane, ama-valve shafts kanye nokuxhumana.
(1) Usayizi weshafu yevalvu Usayizi weshafu yevalvu ucaciswe ku-AWWA C504.Uma usayizi we-valve shaft ungahlangabezani nezidingo, kungase kube khona ukuqina okwanele, ukuvuza kwe-reverse seal, kanye ne-torque enkulu yokuvula.Ukuqina kwe-shaft kuhlobene ne-1 / EI, okusho ukuthi, ukuthuthukisa ukuqina nokunciphisa inkinga ye-deformation, kufanele siqale ngokwandisa i-EI.I-E iyi-modulus ye-elasticity.Ngokuvamile, umehluko wensimbi awumkhulu, futhi izinto ezikhethiwe zinomthelela omncane ekuqineni.Ngiyisikhathi se-inertia futhi sihlobene nosayizi wesigaba se-shaft.Usayizi we-valve shaft ngokuvamile ubalwa ngokuvumelana nenhlanganisela yokugoba kanye ne-torsion.Ayihlobene kuphela ne-torque, kodwa futhi ikakhulukazi ihlobene nomzuzu wokugoba.Ikakhulukazi, umzuzu wokugoba we-valve butterfly enobubanzi obukhulu mkhulu kakhulu kune-torque.
(2) Ukuxhumanisa imbobo yomgodi Uhlobo oludala lwe-AWWA C504 lubeka ukuthi umphini we-valve uvemvane uwumgodi oqondile.Ngemva kwenguqulo yango-1980, kwahlongozwa ukuthi ingenziwa ibe imicu emibili emifushane.Ngokusho kwe-AWWA C504 kanye ne-GB12238, ubude obushunyekiwe be-shaft nembobo kufanele kube ngu-1.5d.Igebe (inani elingu-C) phakathi konqenqema lomzimba we-valve nesiphetho sokusekela sepuleti uvemvane ku-axial dimension ye-valve uvemvane lwase-Japan licacisiwe, ngokuvamile elihlobene nobukhulu bobubanzi, obuphakathi kuka-25 no-45mm. , okuwukunciphisa ibanga phakathi kwezisekelo ze-shaft ( value C), ngaleyo ndlela kuncishiswe umzuzu wokugoba kanye nokuguqulwa kwe-shaft.
(3) Isakhiwo sepuleti uvemvane Isakhiwo sepuleti uvemvane sinobudlelwane obuqondile nobuqinile, ngakho-ke ngaphezu kokuma kwepuleti eliyisicaba, ngokuvamile lenziwa libe yisimo sebhodwe noma umumo we-truss.Ngamafuphi, kuwukwandisa umzuzu we-inertia yesigaba ukwandisa ukuqina.
(4) Ukwakheka komzimba we-valve Kukhona nezinkinga zokuqina ekwakhiweni komzimba we-valve uvemvane onobubanzi obukhulu.Ngokuvamile, kunezimbambo eziyindandatho nezimbambo eziphambanayo.Eqinisweni, izimbambo zesiphambano zandisa kuphela ukuzinza futhi akufanele zibe ziningi kakhulu.Eziyinhloko izimbambo eziyindandatho.Uma ungakwazi ukwengeza izimbambo ezimise okwe-∩, kuzoba usizo kakhulu ekuqineni, kodwa kunenkinga yokungenzi kahle kwezinto.
2.3 Ama-bearings azithambisayo
Iningi noma yonke ingcindezi ephakathi ku-butterfly plate (reverse) idluliselwa ku-bearing ngokusebenzisa shaft, ngakho-ke ukuthwala kudlala indima ebaluleke kakhulu.Amanye amavalvu ovemvane angaphandle alula futhi ayasebenziseka, futhi amavalve anezinga elincane angaphendulwa ngomunwe owodwa, kuyilapho amanye amavalve uvemvane asekhaya esinda.Ngaphezu kwe-coaxiality, i-symmetry, ukunemba kokucubungula, ukuqeda kanye nekhwalithi yokupakisha, kakhulu Isici esibalulekile ukuthambisa kwempahla yomkhono.Izinga le-AWWA C504 liphakamisa ukuthi umkhono we-shaft noma i-bearing efakwe emzimbeni we-valve kufanele ibe yinto yokuzigcoba, futhi umkhono we-shaft unenkinga yokunciphisa ukungqubuzana nokugcoba, futhi ukugqwala akuvunyelwe.Ngaphandle komkhono we-shaft, noma ngabe i-valve shaft iyinsimbi engagqwali, umzimba we-valve unokugqwala nezinkinga zokunamathela.Ukusetshenziswa kwe-bushings nakho kungandisa ukuqina.
Iningi noma yonke ingcindezi ephakathi ku-butterfly plate (reverse) idluliselwa ku-bearing ngokusebenzisa shaft, ngakho-ke ukuthwala kudlala indima ebaluleke kakhulu.Amanye amavalvu ovemvane angaphandle alula futhi ayasebenziseka, futhi amavalve anezinga elincane angaphendulwa ngomunwe owodwa, kuyilapho amanye amavalve uvemvane asekhaya esinda.Ngaphezu kwe-coaxiality, i-symmetry, ukunemba kokucubungula, ukuqeda kanye nekhwalithi yokupakisha, kakhulu Isici esibalulekile ukuthambisa kwempahla yomkhono.Izinga le-AWWA C504 liphakamisa ukuthi umkhono we-shaft noma i-bearing efakwe emzimbeni we-valve kufanele ibe yinto yokuzigcoba, futhi umkhono we-shaft unenkinga yokunciphisa ukungqubuzana nokugcoba, futhi ukugqwala akuvunyelwe.Ngaphandle komkhono we-shaft, noma ngabe i-valve shaft iyinsimbi engagqwali, umzimba we-valve unokugqwala nezinkinga zokunamathela.Ukusetshenziswa kwe-bushings nakho kungandisa ukuqina.
2.4 Ukuxhumana kwe-shaft nepuleti levemvane
I-shaft ne-butterfly plate yevalve yovemvane enobubanzi obuncane kungcono ixhunywe ngokhiye noma i-spline, futhi uxhumano lwe-polygonal shaft noma uxhumano lwephini lungasetshenziswa.Ishafti kanye nepuleti uvemvane levalve yovemvane enobubanzi obukhulu kuxhunywa kakhulu ngokhiye noma izikhonkwane ze-taper.Njengamanje, ama-shafts amaningi nama-discs axhunywe ngezikhonkwane.Iphinikhodi yokuxhuma yonakaliswa ngaphansi kwezimo ezinzima zokusebenza.Lokhu kungenxa yezizathu zokukhiqiza.Phakathi kwabo, ukunemba kwe-anastomosis akulungile, ubukhulu bephinikhodi abufaneleki, ukuqina kwephini akwanele noma impahla ayifanele, njll, kufanele inakwe.I-shaft ne-butterfly plate ye-valve ye-butterfly enkulu ingaxhunywa ngendlela ekhethekile.
I-shaft ne-butterfly plate yevalve yovemvane enobubanzi obuncane kungcono ixhunywe ngokhiye noma i-spline, futhi uxhumano lwe-polygonal shaft noma uxhumano lwephini lungasetshenziswa.Ishafti kanye nepuleti uvemvane levalve yovemvane enobubanzi obukhulu kuxhunywa kakhulu ngokhiye noma izikhonkwane ze-taper.Njengamanje, ama-shafts amaningi nama-discs axhunywe ngezikhonkwane.Iphinikhodi yokuxhuma yonakaliswa ngaphansi kwezimo ezinzima zokusebenza.Lokhu kungenxa yezizathu zokukhiqiza.Phakathi kwabo, ukunemba kwe-anastomosis akulungile, ubukhulu bephinikhodi abufaneleki, ukuqina kwephini akwanele noma impahla ayifanele, njll, kufanele inakwe.I-shaft ne-butterfly plate ye-valve ye-butterfly enkulu ingaxhunywa ngendlela ekhethekile.
2.5 Ubude besakhiwo
Ubude besakhiwo se-valve uvemvane buba uchungechunge olufushane, kodwa indlela enjalo kufanele iqaphe.Ngoba ubude besakhiwo bufushane kakhulu ukuthi buthinte amandla.Izindinganiso zamazwe ngamazwe ziye zabeka ubude besakhiwo sochungechunge olufushane lwama-valve evemvane ye-flange, kodwa ubude besakhiwo se-valve enengcindezi ephakeme akufanele bufinyezwe, ngaphandle kwalokho izinkinga zizokwenzeka, ikakhulukazi ezintweni eziphukayo njengensimbi ekhonjiwe.
Ubude besakhiwo se-valve uvemvane buba uchungechunge olufushane, kodwa indlela enjalo kufanele iqaphe.Ngoba ubude besakhiwo bufushane kakhulu ukuthi buthinte amandla.Izindinganiso zamazwe ngamazwe ziye zabeka ubude besakhiwo sochungechunge olufushane lwama-valve evemvane ye-flange, kodwa ubude besakhiwo se-valve enengcindezi ephakeme akufanele bufinyezwe, ngaphandle kwalokho izinkinga zizokwenzeka, ikakhulukazi ezintweni eziphukayo njengensimbi ekhonjiwe.
I-Nortech ingomunye wabakhiqizi abahamba phambili bamavalvu ezimbonini e-China abanesitifiketi sekhwalithi ye-ISO9001.
Isikhathi sokuthumela: Aug-20-2021