1. Ingcindezi yamagama (PN)
Ingcindezi encane iyinani eliyireferensi elihlobene namandla okumelana nokucindezela kwezingxenye zesistimu yamapayipi.Kubhekiselwa kumklamo onikezwe ingcindezi ehlobene namandla emishini yezingxenye zamapayipi.
Ukucindezela okubizwa ngokuthi amandla okumelana nokucindezela komkhiqizo (okulandelayo ama-valve) ekushiseni kwesisekelo.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 isho ingcindezi enkulu eshiwo ngokusekelwe ezingeni lokushisa lokugcina lokusebenza kwezinga ngalinye lendawo yokuthutha yamapayipi ukuze kusebenze ngokuphephile uhlelo lwamapayipi.Ukukhuluma nje, ingcindezi yokusebenza ingcindezi enkulu uhlelo olungabekezelela ngesikhathi sokusebenza okuvamile.
3. Ingcindezi yokuklama (Pe)
Ingcindezi yokuklama isho ingcindezi enkulu esheshayo ekhishwa 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, Ingcindezi yokuhlola ibhekisela ekucindezelweni okufanele i-valve ifinyelele lapho yenza izivivinyo zamandla okucindezela 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 yesangofuthihlola i-valvekusuka ku-valve ye-ZFA kumele ihlolwe ingcindezi ngaphambi kokuthunyelwa, futhi ingcindezi yokuhlola inkulu noma ilingana 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).
