Ivalve sisixhobo sokulawula umbhobho wolwelo.Umsebenzi wayo osisiseko kukudibanisa okanye ukunqumla ukujikelezwa kombhobho ophakathi, ukutshintsha indlela yokuhamba kwendlela, ukulungelelanisa uxinzelelo kunye nokuhamba kwe-medium, kwayecwangcisa iivalve ezahlukeneyo, ezinkulu nezincinci, kwinkqubo.Isiqinisekiso esibalulekileyo sokusebenza okuqhelekileyo kombhobho kunyeizixhobo.
Kukho iintlobo ezininzi eziqhelekileyo zeevalvu zokunyanga amanzi:
1. Ivalve yeSango.
Yeyona valve isetyenziswa ngokuqhelekileyo yokuvula nokuvala, esebenzisa isango (indawo yokuvula kunye nokuvala, kwivalve yesango, indawo yokuvula nokuvala ibizwa ngokuba yisango, kwaye isihlalo sevalve sibizwa ngokuba yisihlalo sesango) ukudibanisa ( vula ngokupheleleyo) Kwaye unqumle (vala ngokupheleleyo) isiphakathi kumbhobho.Akuvumelekile ukuba isetyenziswe njenge-throttling, kwaye isango kufuneka ligwenywe ukuba livuleke kancinci ngexesha lokusetyenziswa, kuba ukukhukuliseka kwesantya esiphezulu esihambayo kuya kukhawulezisa umonakalo wokutywinwa kwendawo.Isango lihamba linyuka lisihla kwinqwelomoya ukuya kumgca osembindini wetshaneli yesihlalo sesango, kwaye inqumle okuphakathi kumbhobho njengesango, ngoko ibizwa ngokuba yivalve yesango.
Iimbonakalo:
1.Ukuchasana kokuhamba okuncinci.Ijelo eliphakathi ngaphakathi kumzimba wevalve lithe tye, eliphakathi lihamba ngendlela ethe tye, kwaye ukuchasana nokuhamba kuncinci.
2.Ayikongi kakhulu umsebenzi xa uvula naxa uvala.Inxulumene ne-valve ehambelanayo, kuba ivulekile okanye ivaliwe, isalathiso sokuhamba kwesango si-perpendicular kwi-flow direction of medium.
3.Ukuphakama okukhulu kunye nexesha elide lokuvula kunye nokuvala.Ukuvula kunye nokuvala i-stroke yesango kwandisa, kwaye ukunciphisa isantya kuqhutyelwa nge-screw.
4. Into eyenzeka kwihamile yamanzi ayilula ukuba yenzeke.Isizathu kukuba ixesha lokuvala lide.
5. I-medium inokuhamba kuyo nayiphi na indlela yepompo, kwaye ukufakela kukulungele.Impompo yamanzi yomjelo wevalvu yesango igqwesile.
6. Ubude besakhiwo (umgama phakathi kobuso obudibanisayo obubini beqokobhe) buncinci.
7. Umphezulu wokutywina kulula ukuwunxiba.Xa uvula kunye nokuvalwa kuchaphazeleka, iindawo ezimbini zokutywina zeplate yesango kunye nesihlalo sevalve siya kukhuhla kwaye sityibilike ngokuchaseneyo.Ngaphantsi kwesenzo soxinzelelo oluphakathi, kulula ukubangela i-abrasion kunye nokugqoka, okuchaphazela ukusebenza kokutywinwa kunye nobomi benkonzo yonke.
8. Ixabiso libiza kakhulu.Uphawu lomphezulu wokutywina lomfowunelwa lunzima ngakumbi ukusetyenzwa, ngakumbi umphezulu wokutywina kwisihlalo sesango akukho lula ukusetyenzwa.
2.Ivalve yeGlobe
Ivalve yeglowubhu yivalve evaliweyo esebenzisa idiski (indawo yokuvala yevalve yeglowubhu ibizwa ngokuba yidiski) ukuhamba ngomgca osembindini wesitulo sediski (isihlalo sevalve) ukulawula ukuvulwa nokuvala umbhobho.Iivalvu zeglobhu zilungele ukuthutha imidiya engamanzi kunye nerhasi phantsi koxinzelelo olwahlukeneyo kunye namaqondo obushushu ngaphakathi koluhlu olumiselweyo oluqhelekileyo, kodwa azikufanelanga ukuthutha ulwelo oluqulethe imvula eqinileyo okanye icrystallization.Kwimibhobho yoxinzelelo oluphantsi, ivalve yokumisa ingasetyenziselwa ukulungelelanisa ukuhamba kwe-medium kumbhobho.Ngenxa yokulinganiselwa kolwakhiwo, i-diameter yegama levalve yeglowubhu ingaphantsi kwama-250mm.Ukuba ikumbhobho onoxinzelelo oluphakathi oluphezulu kunye nesantya sokuhamba okuphezulu, umphezulu wokutywina wayo uya kuphelelwa ngokukhawuleza.Ngoko ke, xa izinga lokuhamba lifuna ukulungiswa, i-valve ye-throttle kufuneka isetyenziswe.
Iimbonakalo:
1.Ukugqoka kunye nokutshatyalaliswa kwendawo yokutywinwa akukona kunzulu, ngoko umsebenzi unokwethenjelwa ngakumbi kwaye ubomi benkonzo bude.
2. Indawo yendawo yokutywina incinci, isakhiwo silula, kwaye iiyure zomntu ezifunekayo ukwenza umphezulu wokutywina kunye nezinto ezixabisekileyo ezifunekayo kumsesane wokutywina zingaphantsi kwezo zevalve yesango.
3. Xa uvula kwaye uvala, i-stroke ye-disc incinci, ngoko ukuphakama kwe-valve yokumisa kuncinci.Kulula ukusebenza.
4. Ukusebenzisa intambo ukuhambisa i-disc, akuyi kubakho ukuvula nokuvala ngokukhawuleza, kwaye i-phenomenon ye "isando samanzi" ayiyi kwenzeka lula.
5. I-torque yokuvula kunye nokuvala inkulu, kwaye ukuvula kunye nokuvala kunzima.Xa uvala, ulwalathiso lwentshukumo lwe-disc luchasene nolwalathiso loxinzelelo lwentshukumo ephakathi, kwaye amandla ophakathi kufuneka anqotshwe, ngoko ke i-torque yokuvula kunye nokuvala inkulu, echaphazela ukusetyenziswa kweevalve ezinkulu zeglobhu ububanzi.
6. Ukuchasana nokuhamba okukhulu.Phakathi kwazo zonke iintlobo ze-valve ezinqamlekileyo, ukuchasana kokuhamba kwe-valve yokusika kuyona inkulu.(Ijelo eliphakathi liyingozi ngakumbi)
7. Ulwakhiwo lunzima ngakumbi.
8. Indlela yokuhamba ephakathi yindlela enye.Kufuneka kuqinisekiswe ukuba i-medium ihamba ukusuka ezantsi ukuya phezulu, ngoko ke i-medium kufuneka ihambe kwicala elinye.
Kwinqaku elilandelayo, siza kuthetha ngeevalve zebhabhathane kunye neevalve zokujonga kwiivalve zokunyanga amanzi, esele zilungele ukungaphumeleli kunye nokugcinwa.