Cov yeeb nkab flanges yog dab tsi?
Flanges General
Flanges yog siv los txuas cov kav dej, li qub, twj, thiab lwm yam khoom siv los tsim cov kav dej. Tsis tas li ntawd, nws yooj yim ntxuav, tshuaj xyuas, thiab kho kom haum. Feem ntau, flanges yog welded los yog screwed. Ob lub flanges yog bolted ua ke nrog lub sealant ntawm lawv los tsim ib qho kev sib tshuam flanged.
Feem ntau siv flange hom hauv Petro thiab tshuaj lom neeg kev lag luam yog.
Txhua hom tshwj tsis yog Lap Joint flange yog muab nrog lub ntsej muag tsa flange.
Cheebtsam rau Flanges
Cov yeeb nkab flanges yog tsim los ntawm ntau yam ntaub ntawv, xws li stainless hlau, cam khwb cia hlau, txhuas, tooj dag, bronze, thiab yas, tab sis cov khoom siv feem ntau yog carbon hlau uas tau forged thiab machined.
Tsis tas li ntawd, rau cov kev siv tshwj xeeb, flanges, xws li fittings thiab kav, feem ntau nyob rau hauv lined nrog cov khaubncaws sab nraud povtseg ntawm cov ntaub ntawv ntawm ib tug tag nrho zoo sib txawv ntawm cov flanges lawv tus kheej.
Feem ntau, cov khoom ntawm flange yog txiav txim siab thaum xaiv cov yeeb nkab; flanges feem ntau yog ua los ntawm cov khoom siv tib yam li cov yeeb nkab.
Tshwj tsis yog hais tias lwm yam, tag nrho cov flanges nyob rau hauv lub vev xaib no ua raws li ASME thiab ASTM cov qauv. ASME B16.5 tham txog qhov ntev, qhov ntev ntev, thiab lwm yam, thaum ASTM piav qhia txog ntau yam khoom siv.
Kev ntsuas rau Flanges
Txhua ASME B16.5 flange muaj cov txheej txheem ntawm qhov ntev. Yog tias tus kws sau ntawv hauv Nyij Pooj, tus neeg npaj ua haujlwm hauv tebchaws Canada, lossis tus kav dej hauv tebchaws Australia tau hais txog Welding Neck flange NPS 6, Chav Kawm 150, Teem sijhawm 40 ASME B16.5, tom qab ntawd nws hais txog flange hauv qab no.
Yog hais tias lub flange raug txiav txim, tus neeg muag khoom xav paub qhov zoo ntawm cov khoom. ASTM A105 yog carbon steel forged flange, thaum A182 yog stainless hlau forged flange.
Yog li ntawd, ib qho kev txiav txim kom raug rau ib tus neeg muag khoom yuav tsum qhia ob qho qauv.
Vuam caj dab flange NPS 6, Chav Kawm 150, Teem sijhawm 40, ASME B16.5 / ASTM A105
A - Ø192.1|OD - Ø168.3|L - Ø22.4|ID - Ø154.1|G - Ø215.9|K - Ø241.3|D - Ø279.4|B - 25.4|H - 88.9|RF Qhov siab - 1.6
Lub flange saum toj no muaj 8 lub qhov ntsia hlau, thiab vuam bevel ntawm 37.5 degrees (lub voj voog liab). Tag nrho qhov muab qhov ntev yog nyob rau hauv millimeters. Lub ntsej muag tsa (RF) tsis tas yuav tsum tau teev tseg, vim ASME B16.5, txhua qhov flange yog tus qauv xa nrog lub ntsej muag tsa. Tsuas yog tus qauv sib txawv (Ring Type Joint (RTJ), Flat Face (FF) thiab lwm yam, yuav tsum tau teev tseg.
Flanged bolted kev sib txuas
Kev sib txuas ntawm bolted flange yog kev sib xyaw ntawm ntau cov ntsiab lus (Flange, Bolts, Gaskets, Txheej Txheem, Kub, Siab, Nruab Nrab). Tag nrho cov xwm txheej no muaj kev sib cuam tshuam thiab nyob ntawm ib leeg kom tau txais txiaj ntsig zoo.
Qhov tseem ceeb rau kev ntseeg siab ntawm flanged sib koom ua ke yog kev tswj hwm ntawm kev sib koom ua ke.
Hom bolted flange kev twb kev txuas
Txij li ntau xyoo dhau los, kev lag luam tau paub txog qhov tseem ceeb ntawm kev teeb tsa thiab kev sib dhos.
Hauv Tebchaws Europe, qhov tseem ceeb tau ua kom ntseeg tau tias kev sib koom ua ke yog ua los ntawm cov kws tshaj lij kev cob qhia thiab siv tau, thiab qhov no tau ua rau kev tsim khoom ntawm TS EN 1591 Tshooj 4, tus qauv European Technical. Cov txheej txheem no siv rau bolting cov kws tshaj lij thiab lawv cov neeg saib xyuas, cov neeg ua haujlwm lub luag haujlwm, uas tshem tawm, sib sau ua ke, thiab ceev cov kev sib txuas bolted ntawm cov kev pabcuam tseem ceeb ntawm cov txheej txheem kev teeb tsa.
Tus txheej txheem muab cov txheej txheem rau kev cob qhia thiab kev soj ntsuam ntawm cov kws tshaj lij uas koom nrog hauv kev tsim thiab disassembly ntawm flange pob qij txha, thiab tuaj yeem muab piv rau kev cob qhia cov kev cai rau cov welders ua haujlwm siab lub nkoj. Nws tshaj tawm qhia txog qhov tseem ceeb ntawm kev saib xyuas kev sib koom ua ke kom ntseeg tau tias lub flange yuav ua haujlwm yam tsis muaj dej.
Kev sib txuas ntawm bolted flange tuaj yeem xau rau ntau qhov laj thawj, suav nrog lub gasket.
Txawm hais tias tag nrho cov txheej txheem sib koom ua ke ntawm bolted flange kev sib txuas ua haujlwm hauv kev sib raug zoo, ib qho tseem ceeb tshaj plaws uas txiav txim siab qhov kev vam meej lossis tsis ua tiav ntawm qhov kev sib txuas ntawm lub bolted flange yuav yog tus neeg siv lub siab rau kev teeb tsa thiab cov txheej txheem sib dhos. Yog tias ua tau zoo, lub rooj sib txoos yuav nyob twj ywm tsis muaj paug rau nws txoj sia nyob.
Tseem muaj ntau qhov tshwj xeeb flanges xws li ..
Dab tsi yog Flanged Fitting?
Flanged fittings yog siv los txuas ob lossis ntau lub kav dej. Txhua lub yeeb nkab yuav tsum muaj ib lub flange, uas yog ib tug tsa ceg uas mus ncig ntawm cov yeeb nkab sab nrauv ncig. Siv bolts, clamps, los yog lwm yam fasteners, installers koom nrog ob flanges los ntawm compression. Nyob rau hauv qhov chaw ntawm cov pa threaded connectors, vuam, los yog soldering, ib tug flanged haum yuav siv tau. Qee hom flanges tau ua ke nrog vuam lossis vuam los ua kom cov yeeb nkab muaj zog dua.
Los ntawm lawv txoj haujlwm lossis qhov pom, ntau hom flanged fittings tuaj yeem txheeb xyuas los ntawm ib leeg. Fittings siv rau cov kav dej loj heev lossis cov kab roj av muaj lub flange nrog lub ntsej muag du thiab ua tiav ntawm qhov ua ntej tho qhov. Thaum ob qho ntawm cov flanged fittings txuas ua ke, bolts tau muab tso rau hauv flanges 'qhov los tsim kom muaj kev sib txuas ruaj khov, kav ntev. Kev siv siab siab tuaj yeem siv flanged haum nrog lub caj dab tapered. Daim ntawv ntawm kev sib txuas no feem ntau xav tau ob qho tib si vuam thiab bolting txhawm rau tiv thaiv lub siab loj heev los ntawm cov yeeb nkab cov ntsiab lus.
Cov neeg tsim khoom uas yuav tsum tau ntxiv cov flanged haum rau hauv lub tshav pob tuaj yeem xaiv rau cov xov haum, uas muaj cov xov sab hauv zoo ib yam li cov uas pom nyob rau ntawm feem ntau ntawm cov kav dej. Qhov no ua rau lub installer yooj yim ntsia hlau rau hauv cov yeeb nkab kom ruaj ntseg. Lub threaded haum ua rau nws yooj yim rau cov neeg ua haujlwm txiav cov kav dej mus rau qhov loj me uas yuav tsum tau kho sai, tom qab ntawd tsim cov xov ntawm qhov kawg siv cov yeeb nkab threader kom haum rau flange.
Nyob ntawm nws lub hom phiaj, flanged fittings yuav muaj ntau qhov profile. Txhawm rau txuas ob lub kav dej ntawm lub kaum sab xis, lub luj tshib fittings muaj cov duab nkhaus nrog flanges ntawm ob kawg rau kev sib txuas ruaj khov. Lub tee-shaped flanged haum txuas ob lub kav dej hauv ib qho kev khiav nrog cov yeeb nkab txuas txuas, qhov Y-shaped haum txuas peb cov kav dej khiav ntawm peb lub kaum ntse ntse. Qee qhov flanged fittings yuav muaj plaub-txoj kev lossis ntoo khaub lig-shaped configuration kom tso cai rau plaub txoj kev ywj pheej.
Ntau cov flanged fittings yog siv ua ke nrog cov gaskets tshwj xeeb kom tsis txhob xau ntawm lub koom haum ntawm ob lub kav dej. Cov gaskets no qee zaum hu ua "o-rings" thiab tsim los ntawm cov roj hmab lossis cov khoom siv hluavtaws. Thaum flanged fittings yog tsim los rau qhov tseeb heev kam rau ua thiab lub ntsej muag ntawm lub flange yog heev du, kev tiv thaiv tsis tuaj yeem yuav tsum tau siv lub gasket. Hauv qee qhov xwm txheej, roj lossis roj nplua nyeem tuaj yeem siv tsis siv lub nplhaib o-nplhaib los pab kaw qhov khoob ntawm flanges.
