Ifomula yokuguqula iyunithi yokucindezela evamile yevalvu: 1bar=0.1MPa=1KG=14.5PSI=1kgf/m2
Ukucindezela okuzisholo (PN) kanye nephawundi elijwayelekile le-Class American (Lb) kokubili kuyizimpawu zengcindezi.Umehluko ukuthi ingcindezi abayimele ihambisana namazinga okushisa ereferensi ahlukene.Isistimu ye-PN yaseYurophu ibhekisela ekucindezelweni okuhambisanayo kokuthi 120 ℃, kuyilapho izinga le-Class American libhekisela ekucindezelweni okuhambisanayo kokuthi 425.5 ℃.
Ngakho-ke, ekushintsheni kobunjiniyela, ukuguqulwa kwengcindezi akukwazi ukwenziwa kuphela.Isibonelo, ukuguqulwa kwengcindezi ye-CLAss300 # kufanele kube ngu-2.1MPa, kodwa uma izinga lokushisa lokusetshenziswa licatshangelwa, ukucindezela okuhambisanayo kuzokhuphuka, okulingana no-5.0MPa ngokuya ngezinga lokushisa nokuhlolwa kokucindezela kwento.
Kunezinhlobo ezimbili zamasistimu ama-valve: eyodwa uhlelo “lokucindezela okuzisholo” olumelwe iJalimane (kuhlanganise ne-China) futhi olusekelwe ekucindezelweni okuvumelekile okusebenzayo ekushiseni okuvamile (100 ° C eChina no-120 ° C eJalimane).Enye “isistimu yokucindezela kwezinga lokushisa” emelwa yi-United States kanye nengcindezi yokusebenza evumelekile ezingeni elithile lokushisa.
Kuhlelo lokushisa nokucindezela kwe-United States, ngaphandle kwe-150Lb, esekelwe ku-260 ° C, amanye amazinga asekelwe ku-454 ° C. Ukucindezeleka okuvumelekile kwe-25 carbon steel valve ye-150lb (150PSI=1MPa) ku-260 I-℃ ingu-1MPa, futhi ukucindezeleka okuvunyelwe ekushiseni okuvamile kukhulu kakhulu kuno-1MPa, mayelana no-2.0MPa.
Ngakho-ke, uma sikhuluma nje, isigaba sokucindezela okuzisholo esihambisana nesilinganiso saseMelika esingu-150Lb singu-2.0MPa, futhi isigaba sokucindezela okulinganiselwe esihambisana no-300Lb singu-5.0MPa, njll. ifomula yoguquko.
Ngaphezu kwalokho, ezindinganisweni zaseJapane, kukhona uhlelo lwebanga le-“K”, olufana no-10K, 20K, 30K, njll. Umqondo walesi simiso sebanga lokucindezela uyafana nowesistimu yebanga lokucindezela laseBrithani, kodwa iyunithi yokulinganisa uhlelo lwemethrikhi.
Ngenxa yokuthi inkomba yokushisa yengcindezi yegama nesigaba sokucindezela ihlukile, akukho ukuxhumana okuqinile phakathi kwabo.Bheka Ithebula mayelana nokuxhumana okungenzeka phakathi kwalokhu kuthathu.
Ithebula lokuqhathanisa lokuguqulwa kwamaphawundi (Lb) nezinga laseJapane (K) kanye nokucindezela okuzisholo (inkomba)
I-Lb – K – ingcindezi yoqobo (MPa)
150Lb——10K——2.0MPa
300Lb——20K——5.0MPa
400Lb——30K——6.8MPa
600Lb——45K——10.0MPa
900Lb——65K——15.0MPa
1500Lb——110K——25.0MPa
2500Lb——180K——42.0MPa
2500Lb——180K——42.0MPa
3500Lb——250K——56.0MPa
4500Lb——320K——76.0MPa
Ithebula 1 Ithebula lokuqhathanisa phakathi kwe-CL kanye nengcindezi ye-PN
| CL | 150 | 300 | 400 | 600 | 800 |
| I-Pressure Normal PN/MPa | 2.0 | 5.0 | 6.8 | 11.0 | 13.0 |
| CL | 900 | 1500 | 2500 | 3500 | 4500 |
| I-Pressure Normal PN/MPa | 15.0 | 26.0 | 42.0 | 56.0 | 76.0 |
Ithebula 2 Ithebula lokuqhathanisa phakathi kwebanga elithi “K” ne-CL
| CL | 150 | 300 | 400 | 600 | 900 | 1500 | 2000 | 2500 | 3500 | 4500 |
| Ibanga le-K | 10 | 20 | 30 | 45 | 65 | 110 | 140 | 180 | 250 | 320 |
Isikhathi sokuthumela: Jul-26-2022
