Njengeyona valve isetyenziswa kakhulu, iivalve yebholakwakhona lolona hlobo lwevalvu.Iindidi ezahlukeneyo zihlangabezana nesicelo somsebenzisi kwiimeko ezahlukeneyo eziphakathi, iimeko ezahlukeneyo zokushisa kunye neemfuno zenkqubo eyahlukileyo kwinkqubo yokwenene.Oku kulandelayo kwazisa iimpawu zeevalvu zebhola eziqhelekileyo ezifana neevalvu zebhola ezidadayo, iivalvu zebhola ezisisigxina, i-eccentric halfball valves, iivalvu zebhola ezimilise u-V kunye neevalvu zebhola ezinefluorine.
Ngokwesakhiwo kunye nomsebenzi, inokwahlulwa ibe:
1. Kukho iindidi ezininzi zeevalvu zebhola.Yintoni naiivalvu zebhola ezidadayo: Izivalo zebhola ezidadayo zisetyenziswa njengezitywina kwaye ibhola iyadada.Isebenzisa uxinzelelo oluphakathi ukutyhala ibhola ukuhambisa umgama kunye nokucudisa isitulo sevalvu eelastiki ukufezekisa isiphumo sokutywinwa.Olu hlobo lwevalve edadayo lunokumelana nokuvuleka okukhulu kwaye lufanelekile kuphela kwimibhobho kunye nezixhobo ezinomgangatho we-DN "200 kunye noxinzelelo lwe-PN "100.Ukuba ububanzi bebhola bukhulu kakhulu, buya kugoba umzimba we-valve kwaye ungaphumeleli phantsi koxinzelelo lwe-medium;ukuba uxinzelelo luphezulu kakhulu, ivalve yebhola iya kucudiswa kwaye i-elastically kwaye isihlalo sevalve e-elastic siyakonakala ngokusisigxina, esinokuthi sonakalise isitywina kwaye sichaphazele ivalve yebhola.ubomi.
2. Ivalve yebhola esisigxina isetwa ngokutsha ngezikhondo eziphezulu nezisezantsi.Isihlalo sevalve sixhotyiswe ngentwasahlobo yeqabunga okanye i-cylindrical spiral spring.Xa ixhotyiswe, intwasahlobo yesitulo sevalve ixinzelelwe ukuvelisa amandla okuqinisa kwangaphambili ukufezekisa uphawu lokuqala lwevalve, kwaye uxinzelelo luyatyhalwa ngexesha lokusetyenziswa.Isitulo sevalve sishukuma siye ebholeni ukuphumeza itywina.Ngenxa yokuba ibhola ingashukumi, ibizwa ngokuba yivalve yebhola esisigxina.Olu hlobo lokulungiswa luthembeke ngakumbi kuneevalve zebhola ezidadayo ngenxa yokuthembeka kokutywinwa kwayo.Ingasetyenziselwa kuluhlu olubanzi, kungekhona kuphela kwi-diameter encinci yoxinzelelo oluphantsi, kodwa kunye noxinzelelo oluphezulu lwe-diameters.Kodwa indlela eyenziwe ngayo intsonkothe ngakumbi
, Ixabiso lexabiso liphezulu, xa ukhetha, kufuneka ukhethe ngokweemfuno zangempela.
3. Ivalve ye-Eccentric hemispherical.Olu hlobo lwevalve yebhola luthatha i-eccentric structure.Umgaqo-siseko uyafana naleyo yevalve yebhabhathane enamaleko amaninzi amathathu eccentric etywiniweyo.Isitulo sevalve kunye nebhola azinxibi kwaye zinomsebenzi ongqongqo wokutywina.Ibhola yi-1/4 kuphela yevalve yebhola eqhelekileyo.Inobuso obugobileyo, ubunzima obulula kunye nexabiso eliphantsi.Oku kunesiphumo sokucheba kwaye kunokusetyenziswa kumbhobho ophakathi oqulethe iintsinga ezinde ngaphandle kokuxinana.
4. I-flange yevalve yebhola yokufakelwa kwe-thermal yinto enye ukuya kwezimbini ezinkulu kune-valve yebhola ye-flange ngokubanzi.Yamkela umzimba wevalvu odibeneyo kunye noyilo lwebhola esecaleni.Ibhatyi yentsimbi idityaniswe phakathi kweeflange ezandisiweyo kumphandle womzimba wevalvu.Ikwabizwa ngokuba ivelufa yebhatyi yebhola.I-interfaces enejacket ifakwe kumacala omabini omzimba wevalve, enokuthi ihlanjululwe nge-steam okanye enye igesi eshushu kakhulu ukukhusela i-medium kwi-condensing okanye i-crystallization kwiqondo lokushisa.Iivalvu zebhola zokugquma ezishushu zisetyenziswa ikakhulu kwimibhobho kunye nezixhobo ekulula ukuziqaqambisa kwaye zifuna ukugqunywa kwe-thermal kwi-petroleum, iikhemikhali, i-metallurgical, kunye ne-pharmaceutical systems.
5. Ivalve yebhola emise okwe-V yivalve yebhola elawulayo.Umngxuma wokuwela ibhola wahluke kakhulu kumngxuma othe ngqo wevalve yebhola eqhelekileyo.Ibhola inesakhiwo esine-V kwaye ngokuqhelekileyo ithatha isakhiwo esisisigxina kunye neziqu ezibini eziphezulu nangaphantsi.
6. Ivalve yebhola ene-Fluorine iqhele ukusetyenziswa kubushushu obuphantsi kunye nemibhobho eyomeleleyo yesixhobo sokudleka esiphakathi.Olu hlobo lwevalve yebhola lufakwe iiplastiki zobunjineli ezinganyangekiyo kwi-corrosion njenge-PFA okanye i-FEP kuzo zonke iindawo zomjelo wokuhamba odibana nendawo.Inokuthi ithathe indawo yentsimbi ebiza kakhulu engenastainless kunye neHastelloy phantsi kwemeko yokungadluli kubushushu benkonzo yerabha ye-fluorine kumbhobho woxinzelelo oluphantsi., i-Monel alloy, No.
Ngokwesakhiwo kunye nomsebenzi, inokwahlulwa ibe:
1. Kukho iindidi ezininzi zeevalvu zebhola.Yintoni naiivalvu zebhola ezidadayo: Izivalo zebhola ezidadayo zisetyenziswa njengezitywina kwaye ibhola iyadada.Isebenzisa uxinzelelo oluphakathi ukutyhala ibhola ukuhambisa umgama kunye nokucudisa isitulo sevalvu eelastiki ukufezekisa isiphumo sokutywinwa.Olu hlobo lwevalve edadayo lunokumelana nokuvuleka okukhulu kwaye lufanelekile kuphela kwimibhobho kunye nezixhobo ezinomgangatho we-DN "200 kunye noxinzelelo lwe-PN "100.Ukuba ububanzi bebhola bukhulu kakhulu, buya kugoba umzimba we-valve kwaye ungaphumeleli phantsi koxinzelelo lwe-medium;ukuba uxinzelelo luphezulu kakhulu, ivalve yebhola iya kucudiswa kwaye i-elastically kwaye isihlalo sevalve e-elastic siyakonakala ngokusisigxina, esinokuthi sonakalise isitywina kwaye sichaphazele ivalve yebhola.ubomi.
2. Ivalve yebhola esisigxina isetwa ngokutsha ngezikhondo eziphezulu nezisezantsi.Isihlalo sevalve sixhotyiswe ngentwasahlobo yeqabunga okanye i-cylindrical spiral spring.Xa ixhotyiswe, intwasahlobo yesitulo sevalve ixinzelelwe ukuvelisa amandla okuqinisa kwangaphambili ukufezekisa uphawu lokuqala lwevalve, kwaye uxinzelelo luyatyhalwa ngexesha lokusetyenziswa.Isitulo sevalve sishukuma siye ebholeni ukuphumeza itywina.Ngenxa yokuba ibhola ingashukumi, ibizwa ngokuba yivalve yebhola esisigxina.Olu hlobo lokulungiswa luthembeke ngakumbi kuneevalve zebhola ezidadayo ngenxa yokuthembeka kokutywinwa kwayo.Ingasetyenziselwa kuluhlu olubanzi, kungekhona kuphela kwi-diameter encinci yoxinzelelo oluphantsi, kodwa kunye noxinzelelo oluphezulu lwe-diameters.Kodwa indlela eyenziwe ngayo intsonkothe ngakumbi
, Ixabiso lexabiso liphezulu, xa ukhetha, kufuneka ukhethe ngokweemfuno zangempela.
3. Ivalve ye-Eccentric hemispherical.Olu hlobo lwevalve yebhola luthatha i-eccentric structure.Umgaqo-siseko uyafana naleyo yevalve yebhabhathane enamaleko amaninzi amathathu eccentric etywiniweyo.Isitulo sevalve kunye nebhola azinxibi kwaye zinomsebenzi ongqongqo wokutywina.Ibhola yi-1/4 kuphela yevalve yebhola eqhelekileyo.Inobuso obugobileyo, ubunzima obulula kunye nexabiso eliphantsi.Oku kunesiphumo sokucheba kwaye kunokusetyenziswa kumbhobho ophakathi oqulethe iintsinga ezinde ngaphandle kokuxinana.
4. I-flange yevalve yebhola yokufakelwa kwe-thermal yinto enye ukuya kwezimbini ezinkulu kune-valve yebhola ye-flange ngokubanzi.Yamkela umzimba wevalvu odibeneyo kunye noyilo lwebhola esecaleni.Ibhatyi yentsimbi idityaniswe phakathi kweeflange ezandisiweyo kumphandle womzimba wevalvu.Ikwabizwa ngokuba ivelufa yebhatyi yebhola.I-interfaces enejacket ifakwe kumacala omabini omzimba wevalve, enokuthi ihlanjululwe nge-steam okanye enye igesi eshushu kakhulu ukukhusela i-medium kwi-condensing okanye i-crystallization kwiqondo lokushisa.Iivalvu zebhola zokugquma ezishushu zisetyenziswa ikakhulu kwimibhobho kunye nezixhobo ekulula ukuziqaqambisa kwaye zifuna ukugqunywa kwe-thermal kwi-petroleum, iikhemikhali, i-metallurgical, kunye ne-pharmaceutical systems.
5. Ivalve yebhola emise okwe-V yivalve yebhola elawulayo.Umngxuma wokuwela ibhola wahluke kakhulu kumngxuma othe ngqo wevalve yebhola eqhelekileyo.Ibhola inesakhiwo esine-V kwaye ngokuqhelekileyo ithatha isakhiwo esisisigxina kunye neziqu ezibini eziphezulu nangaphantsi.
6. Ivalve yebhola ene-Fluorine iqhele ukusetyenziswa kubushushu obuphantsi kunye nemibhobho eyomeleleyo yesixhobo sokudleka esiphakathi.Olu hlobo lwevalve yebhola lufakwe iiplastiki zobunjineli ezinganyangekiyo kwi-corrosion njenge-PFA okanye i-FEP kuzo zonke iindawo zomjelo wokuhamba odibana nendawo.Inokuthi ithathe indawo yentsimbi ebiza kakhulu engenastainless kunye neHastelloy phantsi kwemeko yokungadluli kubushushu benkonzo yerabha ye-fluorine kumbhobho woxinzelelo oluphantsi., i-Monel alloy, No.
Ixesha lokuposa: Jul-08-2021