ASME Flange Flade Ratings piav qhia: Ua cov lus qhia tiav
Kev ntsuas ntsuas tau yog qhov tseem ceeb thaum xaiv cov flanges rau cov tshuab raj. ASME cov qauv txhais cov kev ntsuas no kom ntseeg tau tias muaj kev nyab xeeb hauv kev kub ntxhov thiab cov xwm txheej siab. Ntawm no yog cov ncauj lus kom ntxaws tawg ntawm flange kev ntsuas thiab yuav txhais lawv li cas:
1. Kev nkag siab siab
ASME FLANGES Siv cov chav kawm (tsis yog "phaus" lossis "PSI") los qhia qhov ntsuas kub:
| Hom | Nominal siab ntawm 100 Qib F (38 Degree) |
|---|---|
| 150# | 275 psi |
| 300# | 720 psi |
| 400# | 960 psi |
| 600# | 1,440 psi |
| 900# | 2,160 psi |
| 1500# | 3,600 psi |
| 2500# | 6, 000 psi |
NCO TSEG: Muaj peev xwm ntau dua li qhov kub nce ntxiv
2. Siab-kub (PT) kev ntsuas
Txhua chav kawm muaj cov kev txwv siab tshwj xeeb ntawm kev sib txawv kub:
Piv txwv rau Chav Kawm 150 Carbon Hlau Flange (A105):
| Kub (degree f) | Max siab (PSI) |
|---|---|
| -20} rau 100 | 275 |
| 200 | 260 |
| 300 | 230 |
| 400 | 200 |
| 500 | 170 |
| 600 | 140 |
| 650 | 120 |
* Cov tswv yim tseem ceeb: Chav kawm 150 Flange tsis yog ib txwm nyob rau 150 PSI - nws qhov kev ntsuas tiag tiag nws txawv nrog kub *
3. Cov khoom cuam tshuam rau kev ntsuas
Cov ntaub ntawv sib txawv muaj sib txawv PT kab nkhaus:
| Khoom | Tus kwv tij lub zog | Txwv qhov kub txwv |
|---|---|---|
| Carbon Steel (A105) | Lub hom phiaj | 850 Qib F (454 degree) |
| Stainless 304\/316 | Siab dua ntawm cov temps qis | 1500 degree f (816 degree) |
| Alloy Hlau (F11) | Muaj zog ntawm siab t | 1000 degree f (538 degree) |
| Nickel alloys | Zoo tshaj corrosion res. | 1200 degree f (649 degree) |
4. Flange hom thiab siab lub peev xwm
Cov Flange sib txawv sib zog sib zog:
Weld caj dab: Zoo tshaj plaws rau kev kub siab (txhua chav kawm)
Npleem-rau: Txwv rau chav kawm 900 # thiab hauv qab no
Qhov chaw weld: Zoo rau me-bore siab siab
Thoo: Txwv rau chav kawm 3000 # tab sis qis kev ntseeg tau
Ntxhuav Quav: Nyob Ntawm Cov Khoom Siv Kawg
Dig muag: Tuaj yeem siv cov kev ntsuas siab tshaj plaws
5. Lub ntsej muag hom kev xav
Lub ntsej muag tsa lub ntsej muag (RF): Txheem rau feem ntau cov ntawv thov
Ntiv nplhaib-hom sib koom yeem (RTJ): Yuav tsum tau rau cov chav kawm 900 # thiab saum toj no
Tiaj Tus Ntsej Muag (FF): Siv nrog cov gaskets ntawm cov khoom siv qis
6. Kev ntsuam xyuas siab xav tau
ASME yuav tsum tau kuaj hydostatic ntawm:
1.5 zaug ntsuas siab rau cov chav kawm 150-900
1.5 zaug ntsuas siab rau cov chav kawm 1500-2500
Kev sim ntev: Tsawg kawg 10 feeb
7. Cov kev ua yuam kev ntau hauv qhov siab xaiv
Piv txwv cov chav kawm sib npaug psi ntaus nqi(Chav Kawm 150 ≠ 150 PSI)
Kev tsis quav ntsej kub kubntawm lub peev xwm siab
Sib tov metric thiab imperial chav kawm(PN VS chav kawm)
Saib cov kev txwv gaskow(PTFE Gaskets swb ua ntej Flange)
Tsis quav ntsej kev pab cyclic(qaug zog ntawm kev hloov pauv siab)
8. Tshwj xeeb rooj plaub
B16.47 Series VS B sib txawv:
Series a (mss sp -44): Muaj peev xwm ntau dua nyob hauv tib chav
Series b (API 605): Kev ntsuas me ntsis
Cov ntawv thov tsis yog qauv:
Cryogenic kev pab (-150 degree f thiab hauv qab)
Cyclic Chaw thau khoom (Pulsating twj)
Yaig \/ Corrosive ib puag ncig
9. Kev hloov pauv mus rau metric (PN) kev ntaus nqi
Kwv yees sib npaug:
| Asme Chav Kawm | PN ntsuas |
|---|---|
| 150# | Hnab ntawv nqua pn20 |
| 300# | Npuag tshu |
| 600# | Pn100 |
| 900# | Pn150 |
NCO TSEG: Kev hloov dua siab tshiab xav tau PT nkhaus sib piv
10. Xaiv cov kev coj ua zoo tshaj plaws
Ib txwm sab laj ntawm qhov tshwj xeeb ASME B16.5 PT rooj rau koj cov khoom
Xav txog ob qho kev tsim kho thiab ntsuas kub
Tus account rau qee zaus overressure cov xwm txheej
Suav nrog cov ntsiab lus kev nyab xeeb rau cov qauv kev lag luam
Txheeb xyuas gasket thiab ntsia liaj sib tw sib tw nrog cov chav kawm flange
Nco ntsoov tias kev ntsuas siab sawv cev uas sawv cev ntau tshaj plaws uas tau pub ua haujlwm siab (MAWP) ntawm qhov kub - tsis tawg. Tsim nyog xaiv Flange yuav tsum to taub ob qho tib si kev ua haujlwm thiab ua tiav PT kev nkhaus nkhaus rau koj cov ntaub ntawv tshwj xeeb thiab chav kawm.
