Flanges General

Lub flange yog ib txoj hauv kev txuas cov kav dej, li qub, twj thiab lwm yam khoom siv los tsim cov kav dej. Nws kuj muab kev yooj yim rau kev ntxuav, tshuaj xyuas lossis hloov kho. Flanges feem ntau yog welded los yog screwed. Flanged pob qij txha yog tsim los ntawm bolting ua ke ob flanges nrog ib tug gasket ntawm lawv los muab ib lub foob.

Khoom siv rau Flanges

Cov yeeb nkab flanges yog tsim nyob rau hauv tag nrho cov khoom sib txawv xws li stainless hlau, cam khwb cia hlau, txhuas, tooj dag, tooj dag, yas thiab lwm yam tab sis cov khoom siv feem ntau yog forged carbon steel thiab muaj machined nto.

Tsis tas li ntawd, flanges, zoo li fittings thiab cov kav dej, rau lub hom phiaj tshwj xeeb qee zaum hauv nruab nrog cov txheej txheem ntawm cov khoom sib txawv zoo li flanges lawv tus kheej, uas yog "lined flanges".

Cov khoom siv ntawm flange, yog qhov tsim nyog thaum xaiv cov yeeb nkab, feem ntau, flange yog cov khoom siv tib yam li cov yeeb nkab.

Tag nrho cov flanges, sib tham hauv lub vev xaib no poob rau hauv ASME thiab ASTM cov qauv, tshwj tsis yog qhia lwm yam. ASME B16.5 piav qhia qhov ntev, qhov ntev ntev thiab lwm yam thiab ASTM cov khoom sib txawv.

Dimensions ntawm Flanges

Txhua flange ASME B16.5 muaj ntau tus qauv qhov ntev. Yog tias tus kws sau ntawv hauv Nyij Pooj lossis tus neeg npaj ua haujlwm hauv tebchaws Canada lossis tus kav dej hauv tebchaws Australia tab tom hais txog Weld Neck flange NPS 6, Chav Kawm 150, Teem sijhawm 40 ASME B16.5, ces nws mus hla lub flange uas hauv daim duab hauv qab no yog qhia .

Yog hais tias lub flange raug txiav txim, tus neeg muag khoom xav paub cov khoom zoo. Piv txwv li ASTM A105 yog forged carbon steel flange, thaum A182 yog forged stainless hlau flange.

Yog li, nyob rau hauv qhov kev txiav txim kom raug rau tus neeg muag khoom ob tus qauv yuav tsum tau teev tseg:

Bolted Flange kev sib txuas

Kev sib txuas ntawm bolted flange yog ib qho kev sib xyaw ua ke ntawm ntau yam (Flange, Bolts, Gaskets, Txheej Txheem, Kub, Siab, Nruab Nrab). Tag nrho cov ntsiab lus no muaj kev cuam tshuam thiab nyob ntawm ib leeg kom ua tiav qhov txiaj ntsig.
Qhov kev ntseeg ntawm flanged sib koom ua ke nyob ntawm qhov tseem ceeb ntawm kev tswj xyuas kev sib koom ua ke.

Quoting los ntawm John H. Bickford phau ntawv, “Ib qho Taw Qhia rau Kev Tsim thiab Cwj Pwm ntawm Bolted Joints”:
Tias txhua qhov tseem ceeb clamping quab yuam uas tuav cov kev sib koom ua ke - thiab tsis muaj qhov yuav tsis muaj kev sib koom ua ke - tsis yog tsim los ntawm tus tsim kev sib koom tes zoo, lossis los ntawm cov khoom zoo. Nws yog tsim los ntawm cov kws kho tsheb ntawm qhov chaw ua haujlwm, siv cov cuab yeej, cov txheej txheem, thiab kev ua haujlwm uas peb tau muab rau nws… Thiab ntxiv: Qhov kawg, qhov tseem ceeb ntawm tus tsim ntawm lub zog yog tus kws kho tsheb, thiab lub sijhawm ntawm kev tsim yog thaum sib dhos. Yog li nws tseem ceeb heev rau peb kom nkag siab txog cov txheej txheem no.

Kev lag luam tau lees paub qhov tseem ceeb ntawm kev teeb tsa thiab kev sib dhos rau ntau xyoo.
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 thiab cov kws tshaj lij tau lees paub thiab qhov no tau coj mus rau kev tshaj tawm cov qauv European Technical: TS EN 1591 Tshooj 4 txoj cai "Flanges thiab lawv cov pob qij txha. Tsim cov cai rau gasketed ncig flange txuas. Kev tsim nyog ntawm cov neeg ua haujlwm muaj peev xwm hauv kev sib dhos ntawm bolted pob qij txha haum rau cov khoom siv raws li Cov Lus Qhia Cov Khoom Siv Siab (PED) ".

Tus qauv muab ib txoj hauv kev rau kev cob qhia thiab kev ntsuam xyuas ntawm cov kws tshaj lij uas koom nrog hauv kev tsim thiab rhuav tshem cov flange pob qij txha thiab tuaj yeem pom tau tias yog qhov zoo sib xws rau cov kev cob qhia uas yuav tsum tau muaj rau cov welders koom nrog kev ua haujlwm siab ntawm lub nkoj. Nws cov ntawv tshaj tawm qhia tau hais tias qhov tseem ceeb tau muab tso rau hauv kev tswj hwm kev sib koom ua ke hauv kev ua kom muaj kev ua haujlwm tsis muaj paug los ntawm flange.

Lub gasket yog tab sis yog ib qho ntawm ntau yam laj thawj ntawm bolted flange sib txuas tuaj yeem xau.
Txawm hais tias tag nrho cov txheej txheem sib cuam tshuam ntawm lub bolted flange kev sib txuas ua haujlwm hauv kev sib raug zoo, ib qho tseem ceeb tshaj plaws uas ua rau kev vam meej lossis tsis ua tiav ntawm qhov kev sib txuas bolted flange yuav tsum tau saib xyuas rau kev txhim kho thiab cov txheej txheem sib dhos los ntawm tus neeg txhim kho gasket. . Yog tias ua tau zoo, lub rooj sib txoos yuav nyob twj ywm tsis muaj paug rau lub hom phiaj lub neej expectancy.