Chav kawm | PN | Chav kawm | PN |
Chav Kawm 150 | PIB 20 | Chav Kawm 900 | PIB 150 |
Chav Kawm 300 | PIB 50 | Chav Kawm 1500 | PIB 260 |
Chav Kawm 600 | PIB 110 | Chav Kawm 2500 | PAB 420 |
Lub ntsiab lus ntawm Class rating ntawm B16 series flange: Chav kawm ntsuam xyuas yog muaj npe raws li qhov tso cai kev ntxhov siab (8750PSI) ntawm A105, WCB 1.1 pab pawg cov khoom hauv qab 454 ° C thiab qhov ntsuas siab raws li 60.3MP:
- P1 = (10S/8750) * Pr≤Pc
P1 - kev ntsuas siab ntawm flange ntawm qhov ntsuas kub, bar.
S - tso cai rau kev ntxhov siab ntawm cov khoom siv flange, MPa.
Pr - flange Class tus nqi.
Pc - siab tshaj plaws ntsuas Bar.
Rau lub flange ntawm cov khoom 150 # nrog rau kev ntxhov siab ntawm 100MPa, nws muaj (10 * 100/8750) * 150 = 17Bar = 1.7MPa.Nws yog sib npaug rau qhov kev cia siab ntawm 150 # flange, nws qhov kev tso cai ua haujlwm siab yog 1.7%.
Cov txheej txheem rau kev txiav txim siab Bolt cheeb tsam ntawm B16 series flange:
Rau flange lossis valve lub cev txuas:
- AB *7000Psi≥Ag*Pc-> AB *120MPa≥Ag*Pg
Ab - cross sectional area of bolt
Thaj tsam ntawm Ag gasket tiv toj sab hauv thiab sab nraud txoj kab uas hla (nrog rau thaj chaw bearing hauv gasket puab txoj kab uas hla).
Pc - Chav kawm ntawm flange
Lub peev xwm ntawm lub ntsia liaj qhov rooj yuav tsum tsis txhob tsawg tshaj li qhov kev xav tias lub siab sab hauv yog nyob rau hauv lub sab nraud txoj kab uas hla ntawm lub gasket sealing nto thaum lub sij hawm tso cai kev nyuaj siab yog sib npaug zos rau 120MPa.Rau flange kev twb kev txuas, a193b7 ntsia liaj qhov rooj nrog yield zog ntawm 105ksi (724mpa) feem ntau yog siv, thiab qhov kev nyab xeeb ntawm bolt tsim yog ns ≥ 6. Yog li ntawd, bolt cheeb tsam ntawm ASME B16.5 flange yog loj dua li ntawm ASME VIII kuv tsis. - txheem flange.Vim yog qhov loj ntawm lub bolt tshaj tawm, lub zog flange feem ntau tsis tsim nyog thaum xam raws li cov qauv.Tab sis qhov tseeb, lub flange muaj kev nyab xeeb, uas yog vim li cas qhov kev qhia tshwj xeeb qhia tias flange xaiv raws li tus qauv flange ntawm B16.5 tsis tuaj yeem xam raws li cov qauv.
Lub ntsiab lus ntawm Sch: Sch yog ib qho luv luv ntawm lub sij hawm umpers rau cov yeeb nkab loj.Nws txhais tau hais tias qhov piv ntawm cov kav dej tsim lub siab rau cov khoom tso cai rau kev ntxhov siab ntawm kev tsim qhov kub thiab txias yog sib npaug los ntawm 100 0 thiab tus nqi tom qab sib npaug.Piv txwv li, yog tias tus qauv tsim siab yog 1MPa thiab qhov tso cai siab ntawm cov yeeb nkab yog 100Mpa, cov yeeb nkab nrog 1/100 100 0 = 10 thiab> Sch.10 yuav tsum tau siv.Rau cov kav dej dav dav, qhov kev cia siab ntawm cov khoom siv dav dav yog li 100Mpa, Sch.80 tuaj yeem dais 8MPa, Sch.160 tuaj yeem dais 16MPa, thiab lwm yam, muaj kev siv dav dav rau xaiv qhov tsim nyog Sch.
Post lub sij hawm: Apr-09-2021