1. Ingcindezi yamagama (PN)
Ukucindezela okulinganiselwe kweuvemvane valveinani eliyireferensi elihlobene namandla okumelana nokucindezela kwezingxenye zesistimu yamapayipi.Kubhekiselwa kumklamo onikezwe ingcindezi ehlobene namandla emishini yezingxenye zamapayipi.
Ingcindezi ebizwa ngokuthi i-butterfly valve ingamandla okumelana nokucindezela komkhiqizo (okulandelayo ama-valve) ezingeni lokushisa eliyisisekelo.Izinto ezihlukile zinamazinga okushisa ayisisekelo ahlukene namandla okucindezela.
Ukucindezela okuzisholo, okumelelwa uphawu PN (MPa).I-PN iwukuhlonza inhlanganisela yezinhlamvu nezinombolo ezisetshenziselwa ireferensi ehlobene nezakhiwo zemishini kanye nezici ezinobukhulu bezingxenye zesistimu yamapayipi.
Uma ingcindezi yokulinganisa ingu-1.0MPa, yirekhode njenge-PN10.Ensimbini eyinsimbi nethusi izinga lokushisa lereferensi lingu-120°C: okwensimbi lingama-200°C kanti okwensimbi yengxubevange lingu-250°C.
2. Ingcindezi yomsebenzi (Pt)
Ingcindezi yokusebenza yeuvemvane valveibhekisela ekucindezelweni okuphezulu okucacisiwe okusekelwe ekushiseni kokugcina kokusebenza kwezinga ngalinye lendawo yokuthutha yamapayipi ukuze kusetshenziswe ngokuphephile uhlelo lwamapayipi.Ukukhuluma nje, ingcindezi yokusebenza ingcindezi enkulu uhlelo olungabekezelela ngesikhathi sokusebenza okuvamile.
3. Ingcindezi yokuklama (Pe)
Ukucindezela komklamo we-valve uvemvane kubhekisela ekucindezelweni okuphezulu okusheshayo okwenziwa uhlelo lwamapayipi okucindezela odongeni lwangaphakathi lwevalvu.Ingcindezi yokuklama kanye nezinga lokushisa elihambisanayo lokuklama isetshenziswa njengesimo somthwalo wokuklama, futhi inani layo akufanele libe ngaphansi kokucindezela kokusebenza.Ngokuvamile, ingcindezi ephakeme kakhulu isistimu engakwazi ukuyithwala ikhethwa phakathi nokubala kokuklama njengengcindezi yokuklama.
4. Ingcindezi yokuhlola (PS)
Kuma-valve afakiwe, Ukucindezela kokuhlola kwe-valve uvemvane kubhekisela ekucindezelweni okufanele i-valve ifinyelele lapho kuhlolwa amandla okucindezela kanye nokuqina komoya.
5. Ubudlelwano phakathi kwalezi zincazelo ezine
Ukucindezela okuzisholo kubhekisela emandleni okucindezela kuzinga lokushisa eliyisisekelo, kodwa ezimweni eziningi, akusebenzi kuzinga lokushisa eliphansi.Njengoba izinga lokushisa lishintsha, amandla okucindezela kwe-valve nawo ashintsha.
Ngomkhiqizo onokucindezela okuthile okuzisholo, ingcindezi yokusebenza engakwazi ukumelana nayo inqunywa izinga lokushisa elisebenzayo lendawo.
Ukucindezela okujwayelekile kanye nengcindezi yokusebenza evumelekile yomkhiqizo ofanayo izohluka emazingeni okushisa ahlukene okusebenza.Ngokombono wokuphepha, ukucindezela kokuhlola kufanele kube kukhulu kunokucindezela okujwayelekile.
Kubunjiniyela, ingcindezi yokuhlola > ingcindezi yokuzisholo > ingcindezi yokuklama > ingcindezi yokusebenza.
Ngamunyevalve kuhlanganiseuvemvane valve, i-valve yesango kanye ne-valve yokuhlola evela ku-valve ye-ZFA kumele ihlolwe ingcindezi ngaphambi kokuthunyelwa, futhi ukucindezela kokuhlola kukhulu noma kulingana nezinga lokuhlola.Ngokuvamile, ukucindezela kokuhlolwa komzimba we-valve izikhathi ezingu-1.5 kunokucindezela okujwayelekile, futhi uphawu luyizikhathi ezingu-1.1 zokucindezela okujwayelekile (isikhathi sokuhlola asikho ngaphansi kwemizuzu emi-5).