1. Ukuxhathisa ulwelo oluphantsi.
2. Amandla angaphandle afunekayo ekuvuleni nasekuvaleni amancinci.
3. Ulwalathiso lokuhamba kwendlela ephakathi alubophekanga.
4. Xa ivuleke ngokupheleleyo, ukhukuliseko lomphezulu wokutywina ngophakathi osebenzayo luncinci kunolo lwevalve yokumisa.
5. Ukuthelekisa imilo kulula, kwaye iteknoloji yokuphosa ilungile.
Ukungalungi kwevalve yesango
1. Ubungakanani obupheleleyo kunye nobude bokuvula bukhulu.Isixhobo sifuna indawo enkulu.
2. Kwinkqubo yokuvula kunye nokuvala, kukho ukungqubuzana okuhambelanayo phakathi kweendawo zokutywinwa, okubangela ngokufutshane ukukrala.
3. Iivalve zesango zihlala zineendawo ezimbini zokutywina, ezongeza ubunzima bokucubungula, ukugaya kunye nokulungiswa.
Iindidi zeevalvu zesango
1. Inokwahlulwa ngokocwangciso lwenkunzi yegusha
I-1) Ivalve yesango elilinganayo: indawo yokutywina ihambelana nomgca wesiseko othe nkqo, oko kukuthi, iindawo ezimbini zokutywina zihambelana nomnye.
Phakathi kweevalve zesango ezihambelanayo, ukucwangciswa nge-thrust wedge kuqhelekileyo.Kukho i-wedge ye-thrust enamacala amabini kumazantsi eevalvu zesango ezimbini.Olu hlobo lwevalve yesango lufanelekile kwi-low-pressure medium kunye ne-diameter encinci (dn40-300mm) i-valve yesango.Kukwakho nemithombo phakathi kweenkunzi zeegusha ezimbini, enokuthi isebenzise amandla okuqinisa kwangaphambili, okunceda ekutywinweni kwenkunzi yegusha.
2) Ivalve yesango leWedge: indawo yokutywina yenza i-engile enomgca wesiseko othe nkqo, oko kukuthi, iindawo ezimbini zokutywina zenza ivalve yesango emise okwe wedge.I-engile ethambekele kumphezulu wokutywina idla ngokuba yi-2 ° 52 ', 3 ° 30′, 5 °, 8 °, 10 °, njl njl. ubungakanani be-engile ubukhulu becala buxhomekeke kwiconvex yobushushu obuphakathi.Ngokuqhelekileyo, okukhona ubushushu bokusebenza buphezulu, kokukhona i-engile kufuneka ibe nkulu, ukuze kuncitshiswe amathuba okutshata xa ubushushu butshintshiwe.Kwivalufa yesango eliwele, kukho ivalve yesango enye, ivalve yesango eliphindwe kabini kunye nevalve yesango elilastiki.Ivalve yesango lesango lesango elilodwa linocwangciso olulula kunye nokusebenza okuthembekileyo, kodwa lifuna ukuchaneka okuphezulu kwi-angle yendawo yokutywina, okunzima ukuyiqhuba kunye nokulungiswa, kwaye inokudityaniswa xa ubushushu buguqulwa.Iivalvu zesango lecango eliphindwe kabini zisetyenziswa kakhulu kwimibhobho yamanzi nakwimibhobho ephakathi.Izibonelelo zayo zezi: ukuchaneka kwe-angle yendawo yokutywina kufuneka ibe phantsi, kwaye ukutshintshwa kweqondo lokushisa akulula ukubangela indawo yokutshata.Xa umphezulu wokutywina unxitywe, unokugqunywa ngembuyekezo.Nangona kunjalo, olu hlobo lokucwangcisa lunamacandelo amaninzi, alula ukubopha kwi-viscous medium kwaye achaphazele ukutywinwa.Okubaluleke ngakumbi, i-baffles ephezulu kunye nesezantsi kulula ukugqwala emva kokusetyenziswa kwexesha elide, kwaye inkunzi yegusha kulula ukuwa.Ivalve yesango elilastiki lewedge yesango, enocwangciso olulula lwevalvu yesango enye yewedge, inokuvelisa inani elincinci loguquko olulastiki ukubuyisela ukutenxa kwi-engile yokusetyenzwa komphezulu wokutywina kunye nokuphucula ubuchwephesha ngokusebenzisa * izibonelelo, kwaye ineenzuzo ezininzi. ikhethwe ngabaninzi.
2. Ngokutsho kokucwangciswa kwesiqu sevalve, ivalve yesango inokwahlulwa ibe
1) Ivalve yesango lesikhondo esinyukayo: i-valve stem nut ikwisigqubuthelo sevalve okanye inkxaso.Xa uvula kwaye uvala isango, jikelezisa i-valve stem nut ukugqiba ukuphakamisa isikhondo sevalve.Olu hlobo lokucwangcisa lunenzuzo kwi-lubrication yentonga ye-valve, kwaye idigri yokuvula kunye nokuvala icacile, ngoko isetyenziswa ngokubanzi.
2) Ivalve yesango ye-stem enganyukiyo: i-valve stem nut ikumzimba wevalvu kwaye ichukumisa okuphakathi.Xa uvula kwaye uvala inkunzi yegusha, jikelisa intonga yevalve.Inzuzo yesi sicwangciso kukuba ukuphakama kwevalve yesango kuhlala kungatshintshi, ngoko ke indawo yesixhobo incinci.Ifanelekile kwiivalve zesango ezinobubanzi obukhulu okanye indawo yezixhobo ezithintelweyo.Olo cwangciso luya kuxhotyiswa ngezalathi zokuvula nokuvala ukubonisa isidanga sokuvula nokuvala.Ukungalungi kwesi sicwangciso kukuba intambo ye-stem ayinakukwazi ukuthanjiswa kuphela, kodwa iphinde ichithwe ngokuthe ngqo phakathi kwaye yonakaliswe kancinci.
Ububanzi bevalve yesango bufutshane
Ukucinga ukuba i-diameter yetshaneli kumzimba wevalvu yahlukile (ngokuqhelekileyo i-diameter kwisitulo sevalve incinci kunoko kuqhagamshelo lwe-flange), kubizwa ngokuba mfutshane kwendlela.
Ukunciphisa i-diameter ye-drift kunokunciphisa ubukhulu beengxenye kunye namandla afunekayo ukuvula nokuvala.Ngokudibeneyo, inokwandisa ukucwangciswa kwesicelo samacandelo.
Emva kokunciphisa i-diameter ye-drift.Ukuxhathisa ulwelo kuyanda.
Ixesha lokuposa: May-09-2022