Umgaqo wokusebenza

Ukusebenza kufana nevalve yebhola, evumela ukuvalwa ngokukhawuleza. Iivalvu zebhabhathane zithandwa ngokubanzi kuba zibiza ngaphantsi kolunye uyilo lwevalvu, kwaye zinobunzima obukhaphukhaphu ngoko zifuna inkxaso encinci. I-disc ibekwe embindini wombhobho. Intonga idlula kwidiski iye kwi actuator engaphandle kwevalve. Ukujikeleza i-actuator ijika i-disc ukuba ihambelane okanye i-perpendicular ukuhamba. Ngokungafani ne-valve yebhola, i-disc ihlala ikhona ngaphakathi kokuhamba, ngoko ibangela ukuhla kwengcinezelo, nangona ivulekile.

Ivalve yebhabhathane ivela kusapho lweevalvu ezibizwaiivalvu zekota. Ekusebenzeni, i-valve ivuleke ngokupheleleyo okanye ivaliwe xa i-disc ijikeleza ikota. "Ibhabhathane" yidiski yentsimbi efakwe kwintonga. Xa i-valve ivaliwe, i-disc iguqulwa ukuze ivalwe ngokupheleleyo kwipaseji. Xa i-valve ivuleke ngokupheleleyo, i-disc ijikeleziswa ikota yekota ukwenzela ukuba ivumele ukudlula okungathintelwanga kolwelo. Ivalve isenokuthi ivulwe ngokunyukileyo ukuqukuqela.

Kukho iindidi ngeendidi zeevalvu zebhabhathane, nganye ilungiselelwe iingcinezelo ezahlukeneyo kunye nokusetyenziswa okwahlukileyo. Ivalve yebhabhathane ye-zero-offset, esebenzisa ukuguquguquka kwerabha, inomlinganiselo ophantsi woxinzelelo. I-valve ye-butterfly esebenza kakuhle kabini, esetyenziswa kwiinkqubo zoxinzelelo oluphezulu kancinci, ihlanjululwe ukusuka kumgca ophakathi wesihlalo sediski kunye nokutywinwa komzimba (i-offset enye), kunye nomgca ophakathi webhore (i-offset ezimbini). Oku kudala intshukumo yecam ngexesha lokusebenza ukuphakamisa isihlalo ngaphandle kwetywina okukhokelela ekukhuhlaneni okuncinci kunoko kwenziwa kuyilo lwe-zero offset kunye nokunciphisa utyekelo lwaso lokunxiba. Ivalve ifanelene kakhulu neenkqubo zoxinzelelo oluphezulu yivalve yebhabhathane ephindwe kathathu. Kule valve i-disc seat i-axis yoqhagamshelwano i-offset, eyenza ukuphelisa unxibelelwano lokutyibilika phakathi kwediski kunye nesihlalo. Kwimeko yeevalvu eziphindwe kathathu isihlalo senziwe ngesinyithi ukuze sitshintshwe njengokufikelela kwi-bubble tight shut-off xa udibana nediski.

Iintlobo

1. Iivalve ze-butterfly ezigxininisiweyo - olu hlobo lwevalve lunesihlalo se-rubber ehambelanayo kunye nediski yensimbi.
2. Iivalve ze-butterfly eziphindwe kabini (i-high-performance butterfly valves okanye i-double-offset butterfly valves) - iintlobo ezahlukeneyo zezinto ezisetyenziselwa isihlalo kunye nediski.
3. Iivalve zebhabhathane ezintathu-eccentric (iivalve zebhabhathane ezine-fiberfly) - izihlalo zenziwe nge-laminated okanye isihlalo sentsimbi eyomeleleyo.

Ivalve yebhabhathane eluhlobo lweWafer

Ivalve yebhabhathane yesimbo se-wafer iyilelwe ukugcina itywina ngokuchasene nokwahluka koxinzelelo lwe-bi-directional ukuthintela nakuphi na ukubuya umva kwiinkqubo eziyilelwe ukuhamba ngokulinganayo. Ikwenza oku ngetywina eliqinileyo; oko kukuthi, i-gasket, i-o-ring, i-precision machined, kunye nobuso bevalve esicaba kumacala angasentla nasezantsi evalve.

Lug-style butterfly valve

Iivalvu zesimbo seLug zifakele imisonto kumacala omabini omzimba wevalvu. Oku kuvumela ukuba bafakwe kwisistim usebenzisa iiseti ezimbini zeebholiti kwaye akukho nuts. Ivalve ifakwe phakathi kweeflange ezimbini kusetyenziswa isethi eyahlukileyo yeebholiti kwiflange nganye. Olu seto luvumela naliphi na icala lenkqubo yemibhobho ukuba liqhawulwe ngaphandle kokuphazamisa elinye icala.

Ivalve yebhabhathane yohlobo lwelug esetyenziswa kwinkonzo yokuphela kofileyo inomlinganiselo ophantsi woxinzelelo. Umzekelo, ivalve yebhabhathane efakwe phakathi kweeflange ezimbini ine-1,000 kPa (150psi) yokukala uxinzelelo. Ivalve efanayo efakwe ngeflange enye, kwinkonzo efileyo, inomlinganiselo we-520 kPa (75 psi). Iivalvu eziluqilima ziyakwazi ukumelana neekhemikhali kunye nezinyibilikisi kwaye ziyakwazi ukumelana namaqondo obushushu ukuya kutsho kuma-200 °C, nto leyo eyenza ibe sisisombululo esiguquguqukayo.

Ivalve ejikelezayo

Iivalvu ezijikelezayo zenza ukutsalwa kweevalvu zebhabhathane jikelele kwaye zisetyenziswa ikakhulu kumashishini okwenziwa komgubo. Kunokuba libe mcaba, ibhabhathane lixhotyiswe ngeepokotho. Xa ivaliwe, isebenza kanye njengevalve yebhabhathane kwaye iqinile. Kodwa xa ikujikelezo, iipokotho zivumela ukuwisa inani elichaziweyo lezinto eziqinileyo, nto leyo eyenza ivalve ilungele ukudosa imveliso eninzi ngomxhuzulane. Iivalve ezinjalo zihlala zincinci (ngaphantsi kwe-300 mm), i-pneumatically isebenze kwaye ijikeleze i-180 degrees emva naphambili.

Ukusetyenziswa kwishishini

Kwimizi-mveliso yamayeza, iikhemikhali, kunye nokutya, i-valve yebhabhathane isetyenziselwa ukuphazamisa ukuhamba kwemveliso (eqinile, i-liquid, igesi) ngaphakathi kwenkqubo.Ii-valve ezisetyenziswa kula mashishini zivame ukuveliswa ngokwemigaqo ye-cGMP (inkqubo yokuvelisa ilungileyo ngoku). Iivalvu zebhabhathane zidla ngokutshintsha iivalvu zebhola kumashishini amaninzi, ngakumbi i-petroleum, ngenxa yeendleko eziphantsi kunye nokulula ukuyifaka, kodwa imibhobho eneevalvu zebhabhathane ayinakugqunywa” ukuze icocwe.

Imbali

Ivalve yebhabhathane ibisetyenziswa ukususela ekupheleni kwenkulungwane ye-18. UJames Watt wasebenzisa ivalve yebhabhathane kwiprototypes yenjini yakhe yomphunga. Ngokuhambela phambili kwimveliso yezinto kunye nobuchwepheshe, iivalvu zebhabhathane zinokwenziwa zibe zincinci kwaye zimelane namaqondo obushushu angaphezulu. Emva kweMfazwe Yehlabathi II, iirubha ezenziweyo zasetyenziswa kumalungu atywiniweyo, nto leyo evumela ukuba ivalve yebhabhathane isetyenziswe kumashishini amaninzi ngakumbi. Ngo-1969 uJames E. Hemphill wafumana ilungelo elilodwa lomenzi wokuphucula ivalve yebhabhathane, enciphisa itorque ye-hydrodynamic efunekayo ukutshintsha ukuphuma kwevalve.