Dab tsi yog Reducing Flange?
Lub reducing flange yog ib lub flange uas muaj ob qhov loj me sib txawv, uas tso cai rau kev txuas cov kav dej uas muaj qhov loj me sib txawv. Lub qhov loj tshaj mus rau lub kav loj, thaum lub qhov me tshaj mus rau lub kav me. Tus qauv tsim feem ntau yog eccentric, txhais tau tias sab saum toj ntawm ob qhov yog aligned kom tsis txhob muaj huab cua lossis vapor tsub rau ntawm qhov siab ntawm cov kav dej. Qhov eccentric tsim no tseem ceeb heev rau cov kav uas muaj kua dej, qhov twg vapor pockets yuav ua rau muaj teeb meem ntws lossis corrosion.
Tus Qauv Tsim thiab Eccentric Bore Geometry
Cov reducing flanges raug tsim raws li ASME B16.5 nrog cov qhov sib txawv. Lub eccentric bore ua kom ob qhov saum toj nyob rau tib qhov siab, uas tiv thaiv huab cua pockets hauv cov kav dej kab rov tav. Tus qauv bolts phim lub flange loj, ua kom hloov tau nrog lub flange loj. Lub facing ntawm qhov kawg loj feem ntau yog raised face, thiab lub flange tuab yuav tsum tau raws li qhov pressure class raws li qhov loj ntawm lub flange loj. Tus qauv compact txo qhov ntev ntawm lub piping tag nrho piv rau ib qho flange + reducer ua ke.
| Qhov Loj NPS | Qhov Me NPS | Flange OD (in) | Tuab Class 150 (in) | Tus Naj Npawb Ntawm Bolts |
|---|---|---|---|---|
| 4 | 3 | 9.00 | 0.94 | 8 |
| 6 | 4 | 11.00 | 1.00 | 8 |
| 8 | 6 | 13.50 | 1.12 | 8 |
| 10 | 8 | 16.00 | 1.19 | 12 |
| 12 | 10 | 19.00 | 1.25 | 12 |
| 14 | 12 | 21.00 | 1.38 | 12 |
Qhov Siab Ratings
Qhov siab rating ntawm lub reducing flange yog raws li qhov me thiab lub pressure class. Lub flange yuav tsum tau ua tau raws li qhov siab tag nrho ntawm ob qho loj thiab me. Cov reducing flanges muaj feem ntau ntawm Class 150 txog 600. Cov higher classes yuav xav tau kev tsim tshwj xeeb thiab tsis tshua muaj hauv khw. Qee qhov derating yuav siv tau raws li qhov hloov ntawm qhov, yog li nws tseem ceeb heev kom xyuas qhov siab rating rau qhov loj me uas xav tau.
Cov Khoom Siv (Materials)
Cov reducing flanges muaj nyob rau hauv tib yam khoom raws li cov standard ASME B16.5 flanges. ASTM A105 carbon steel yog tus qauv rau kev siv dav dav. ASTM A182 F304 thiab F316 stainless steels yog siv rau cov chaw corrosive. ASTM A350 LF2 low-temperature khoom muaj rau cov kev pab cuam txias. Alloy qib muaj rau kev pab cuam kub tab sis tej zaum yuav siv sij hawm ntev dua. Cov khoom siv yuav tsum tau ua raws li ob qho loj me thiab ASME material specification rau tag nrho lub flange cross-section.
Kev Siv (Applications)
Cov reducing flanges feem ntau siv ntawm pump suction thiab discharge nozzles qhov twg lub qhov nkag thiab tawm ntawm lub twj tshuab txawv ntawm cov kav txuas. Equipment connections nrog qhov loj me sib txawv nyob rau hauv qhov chaw nruj uas ib qho flange + reducer ua ke yuav tsis haum yog qhov zoo tshaj plaws. Cov tshuab uas eccentric reduction tiv thaiv vapor accumulation, xws li pump suction lines, yog qhov tseem ceeb. Pressure vessel connections nrog stepped nozzle sizes kuj feem ntau siv reducing flanges.
Reducing Flange vs Flange + Reducer
Qhov kev tsim ib qho ntawm lub reducing flange txuag tau chaw heev piv rau ib qho flange thiab concentric reducer ua ke. Tsawg welded joints txo qhov chaw uas xau dej thiab tshem tawm ib qho circumferential weld. Tus nqi tag nrho feem ntau qis dua qhov yuav ob yam khoom sib cais. Txawm li cas los, reducing flanges nyuaj rau align dua li cov flanged reducers sib cais vim qhov orientation tseem ceeb. Lawv kuj tsis yooj yim rau kev hloov kho rau yav tom ntej; ib qho flange-reducer ua ke tso cai rau lub reducer hloov tau yooj yim thaum xav tau.
Rau feem ntau ntawm cov equipment connection uas qhov chaw tsawg thiab qhov loj me paub lawm, reducing flanges muab cov kev daws teeb meem zoo thiab raug nqi. Qhov tseem ceeb yog siv reducing flanges thaum koj xav tau qhov chaw txuag, tiv thaiv xau dej ntawm equipment connections qhov twg qhov chaw txuag txaus kom tsis txhob txo qhov yooj yim.
Xav Tau Reducing Flanges?
Tiv tauj peb pab neeg engineering rau kev pab xaiv reducing flange thiab nqe sib tw.
Cov Khoom Flange
