Qhov siab tshaj plaws ( ntsuas hauv psi lossis tuav) uas lub flange tuaj yeem tiv taus thaum kub nce yog hu ua "flange rating" (los yog "chav kawm"). Flanges nrog cov kev ntsuas siab dua (cov chav kawm) tuaj yeem tiv taus ntau dua ntawm qhov kub thiab txias, ua rau lawv muaj zog dua flanges nrog qis qis. Cov ntaub ntawv sib txawv siv los ua cov flanges muaj qhov sib txawv siab-kub tus yam ntxwv ntawm tib qhov kev ntsuas. Cov lus ntsuas siab rau cov pa roj carbon, alloy, thiab stainless hlau flanges tau muab rau hauv tsab xov xwm, nrog rau cov lus qhia txog kev xaiv qhov kev ntsuas zoo rau koj daim ntawv thov piping.
Dab tsi yog qhov txawv ntawm "siab ntsuas", "chav kawm", "#", "Lb" lossis "Lbs"?
Cov ntsiab lus "siab ntsuas", "chav kawm", "#", "Lb" lossis "Lbs" yog hloov pauv tau, piv txwv li lawv txhua tus xa mus rau tib lub tswv yim ntawm kev ua haujlwm siab / qhov kub thiab txias ntawm flange (thiab lwm yam khoom siv xws li li qub, fittings. , thiab lwm yam).
ANSI Flange Pressure RATING piav qhia
Qhov siab tshaj plaws tso cai siab uas lub flange tuaj yeem tiv taus ntawm qhov kub thiab txias yog hu ua kev ntsuas siab. Muaj xya flange siab ntsuas tau teev nyob rau hauv ANSI / ASME B16.5 specification: 150, 300, 400, 600, 900, 1500, thiab 2500.
Cia peb siv ib qho piv txwv los piav txog qhov no:
Qhov qis qis flange (chav kawm 150) yuav me dua, sib dua, thiab tsis tshua muaj zog dua qhov siab dua flange (chav kawm 300) yog tias ob lub flanges muaj qhov loj me me (piv txwv li, 6 ntiv tes), cov khoom siv tib yam (piv txwv li, A105 ), tab sis ob qhov kev ntsuas siab sib txawv (piv txwv li, ib qho flange yog chav kawm 150, lwm qhov 300). (chav kawm 300). Hauv daim duab, cov hauv qab no tau piav qhia:
Kev ntsuas rau Flange Siab
Cia peb tshuaj xyuas seb qhov no txhais li cas rau kev ntsuas siab tam sim no:
Ntawm qhov kub ntawm 600 degrees Fahrenheit, chav kawm 150 flange tsuas tuaj yeem zam tau 140 psi (raws li daim ntawv ntsuas hauv qab no)
Nyob rau tib qhov kub ntawm 600 degrees F, chav kawm loj thiab muaj zog dua 300 flange tuaj yeem tiv taus 570 psi.
Qhov kawg tab sis tsis kawg, chav kawm 2500 flange ntawm tib qhov loj tuaj yeem tiv taus 34 lub sij hawm siab dua li chav kawm 150 flange, nrog rau qhov ntsuas ntawm staggering 4730 psi ntawm 600 degree F.
