Ama-globe valves,ama-valve esango, izivalo uvemvane, hlola ama-valvefuthiama-valve ebhola, njll. Lawa mavalvu manje ayizingxenye zokulawula ezibalulekile ezinhlelweni zamapayipi ahlukahlukene.Uhlobo ngalunye lwe-valve luhlukile ngokubukeka, ukwakheka kanye nenjongo yokusebenza.Noma kunjalo, i-valve yokumisa kanye ne-i-valve yesangozinokufana okuthile ngokubukeka, futhi zombili zinomsebenzi wokusika epayipini.Ngakho-ke, abangani abaningi abangenakho ukuxhumana okuningi ne-valve bazodida lezi ezimbili.Eqinisweni, uma ubheka ngokucophelela, umehluko phakathi kwe-valve yembulunga kanye ne-i-valve yesangoinkulu impela.
1.Ngokwesakhiwo
Kufanele kuqashelwe ukukhetha lapho indawo yokufaka ilinganiselwe.Ii-valve yesangoingavalwa ngokuqinile ngendawo yokuvala ngokuya ngengcindezi ephakathi, ukuze kuzuzwe umphumela wokungavuzi.Lapho uvula futhi uvala, i-valve core kanye nendawo yokuvala isihlalo se-valve zihlala zithintana futhi zikhuhlana komunye nomunye, ngakho indawo yokuvala kulula ukuyigqoka.Lapho i-i-valve yesangoisisondele ekuvaleni, umehluko wengcindezi phakathi kwengaphambili nangemuva kwepayipi mkhulu, okwenza indawo yokuvala igqoke ibe bucayi kakhulu.
Isakhiwo se-i-valve yesangoizoba yinkimbinkimbi kakhulu kune-valve yokuvala.Ngokombono wokubukeka, ii-valve yesangoyinde kune-valve yokuvala futhi i-valve yokuvala yinde kune-valve yokuvalai-valve yesangoendabeni yezinga elifanayo.Ngaphezu kwalokho, i-i-valve yesangoihlukaniswe yaba aOS&Y isiqukanye aIsiqu esingavuki.I-valve yokuvala ayifuni.
2.Isimiso sokusebenza
Lapho i-valve yokuvala ivuliwe futhi ivaliwe, isiqu siyaphakama, okusho ukuthi, lapho isondo lesandla liguqulwa, isondo lesandla lizojikeleza futhi liphakamise kanye nesiqu.Ii-valve yesangoijikelezisa isondo lesandla ukwenza isiqu se-valve siye phezulu naphansi, futhi indawo yesondo lesandla ihlala ingashintshile.Izinga lokugeleza lihlukile, ii-valve yesangoidingeka ukuthi ivuleke ngokugcwele noma ivalwe ngokugcwele, kodwa i-valve yokumisa ayidingeki.I-valve yokuvala inezikhombisi-ndlela ezishiwo zokungena nezokuphuma;ii-valve yesangoayinazo izidingo zendlela yokungena nokuphumayo.
Ngaphezu kwalokho, i-i-valve yesangoinezifunda ezimbili kuphela: evulekile ngokugcwele noma evalwe ngokugcwele, isango lokuvula nokuvala i-stroke inkulu, futhi isikhathi sokuvula nokuvala side.Ukunyakaza kwe-valve plate ye-valve yokuvala kuncane kakhulu, futhi i-valve plate ye-valve yokuvala ingamiswa endaweni ethile ngesikhathi sokunyakaza kokulungiswa kokugeleza.Ii-valve yesangoingasetshenziselwa ukusika kuphela, futhi ayinayo eminye imisebenzi.
3.Umehluko wokusebenza
I-valve yokuvala ingasetshenziselwa ukusika nokulungisa ukugeleza.Ukumelana noketshezi lwe-valve yembulunga kukhulu uma kuqhathaniswa, futhi kuba nzima kakhulu ukuvula nokuvala, kodwa ngenxa yokuthi ibanga phakathi kwepuleti le-valve nendawo yokuvala lifushane, ukuvuleka nokuvala kufushane.
Ngoba ii-valve yesangoingavulwa ngokugcwele futhi ivalwe ngokugcwele, lapho ivuliwe ngokugcwele, ukumelana nokugeleza kwe-medium esiteshini somzimba we-valve cishe ku-zero, ngakho-ke ukuvulwa nokuvalwa kwe-valve.i-valve yesangoizosindisa kakhulu umsebenzi, kodwa isango likude nendawo yokuvala futhi isikhathi sokuvula nokuvala side.
4.Ukufakwa nokugeleza
Umphumela we-valve yesango kuzo zombili izinkomba uyafana.Asikho isidingo sezikhombisi-ndlela ze-inlet ne-outlet zokufakwa, futhi okuphakathi kungazungeza kuzo zombili izinkomba.I-valve yokumisa idinga ukufakwa ngokuhambisana ngokuqinile nesiqondiso esikhonjiswe umcibisholo osemzimbeni we-valve.Kukhona nomgomo ocacile mayelana nesiqondiso sokungena nokuphuma kwe-valve yokumisa.Isiqondiso sokugeleza kwe-valve yokumisa kufanele sisuke phezulu siye phansi.
I-valve yokuvala iphansi futhi iphuma phezulu.Ngaphandle, kusobala ukuthi ipayipi alikho emgqeni ovundlile wesigaba esisodwa.Ii-valve yesangoindlela yokugeleza ikumugqa ovundlile.Ukushaya kwei-valve yesangoinkulu kunaleyo yevalvu yokumisa.
Ngokombono wokumelana nokugeleza, ukumelana nokugeleza kwe-i-valve yesangoincane uma ivuliwe ngokugcwele, futhi ukumelana nokugeleza kwe-valve yokumisa umthwalo kukhulu.I-coefficient yokumelana nokugeleza evamilei-valve yesangocishe ku-0.08 ~ 0.12, amandla okuvula nawokuvala mancane, futhi okuphakathi kungageleza ngezindlela ezimbili.Ukumelana nokugeleza kwama-valve ajwayelekile okuvala izikhathi ezingama-3-5 kune-ama-valve esango(inombolo yomphakathi: isiphathi sephampu).Lapho uvula futhi uvala, kudinga ukuphoqeleka ukuvala ukuze kuzuzwe uphawu.I-valve core ye-valve yokumisa ayixhumani nendawo yokuvala lapho ivalwe ngokuphelele, ngakho-ke ukugqoka kwendawo yokuvala kuncane kakhulu.I-valve yokumisa edinga ukwengeza i-actuator ngenxa yamandla amakhulu okugeleza kufanele inake Ukulungiswa kwendlela yokulawula ithoshi.
Kunezindlela ezimbili zokufaka i-valve yokuvala.Enye ukuthi i-medium ingangena isuka ngaphansi kwe-valve core.Inzuzo yukuthi ukupakisha akucindezelwe lapho i-valve ivaliwe, engandisa impilo yesevisi yokupakisha futhi ingathwala ingcindezi epayipini phambi kwe-valve.Ngaphansi kwesimo, ukupakisha kufanele kushintshwe;okubi ukuthi i-torque yokushayela ye-valve inkulu kakhulu, cishe izikhathi ezingu-1 zokugeleza okuphezulu, amandla e-axial esiqwini se-valve makhulu, futhi i-valve stem kulula ukugoba.Ngakho-ke, le ndlela ngokuvamile ifaneleka kuphela kuma-valve okumisa ama-diameter amancane (ngezansi kwe-DN50).Kumavalvu okumisa ngaphezulu kwe-DN200, okuphakathi kugeleza kusuka phezulu.(I-valve yokuvala kagesi ngokuvamile ithatha indlela into ephakathi engena ngayo isuka phezulu.) Ububi bendlela into ephakathi nendawo engena ngayo isuka phezulu iphambene nje nendlela yokungena usuka ngezansi.
Isikhathi sokuthumela: Sep-03-2021