Dab tsi yog flange?
Flange luv luv, tsuas yog ib lo lus dav dav, feem ntau yog hais txog lub cev zoo li lub cev zoo li lub cev kom qhib ob peb lub qhov ruaj khov, siv los txuas rau lwm yam, cov khoom no tau siv dav hauv cov tshuab, yog li nws zoo li txawv me ntsis, xws li ntev raws li lub npe hu ua flange, nws lub npe yog muab los ntawm lus Askiv flange.kom cov yeeb nkab thiab cov yeeb nkab sib txuas ntawm qhov chaw, txuas rau qhov kawg ntawm cov yeeb nkab, lub flange muaj qhov aperture, screws ua rau ob lub flanges Tightly txuas, nruab nrab ntawm lub flange nrog lub gasket foob.
Flange yog ib qho disk-puab qhov chaw, feem ntau yog siv rau hauv pipeline engineering, flange yog siv ua khub.
Hais txog hom kev sib txuas ntawm flange, muaj peb yam:
- Cov yeeb nkab flanges
- Gasket
- Bolt kev twb kev txuas
Feem ntau, muaj ib qho tshwj xeeb gasket thiab ntsia liaj qhov rooj cov ntaub ntawv uas yog tsim los ntawm tib yam khoom raws li cov yeeb nkab flange tivthaiv.Feem ntau cov flanges yog stainless hlau flanges.Flanges, ntawm qhov tod tes, muaj nyob rau hauv ntau yam khoom siv txhawm rau ua kom haum rau lawv cov kev xav tau ntawm qhov chaw.Qee cov ntaub ntawv flange feem ntau yog monel, inconel, thiab chrome molybdenum, nyob ntawm seb qhov chaw yuav tsum tau ua.Qhov kev xaiv zoo tshaj plaws ntawm cov khoom yuav tsum nyob ntawm seb hom kev kaw lus uas koj xav siv lub flange nrog cov kev cai tshwj xeeb.
7 Cov Hom Flanges
Muaj ntau hom flanges uas tuaj yeem xaiv raws li qhov yuav tsum tau ua ntawm qhov chaw.Yuav kom phim tus tsim ntawm flange zoo tagnrho, txhim khu kev qha kev ua haujlwm nrog rau kev ua haujlwm ntev yuav tsum tau ua kom ntseeg tau thiab tus nqi tsim nyog tshaj plaws yuav tsum tau txiav txim siab.
1. threaded flange:
Threaded flanges, uas muaj ib tug xov nyob rau hauv lub flange bore, yog haum nrog lwm threads ntawm lub haum.Threaded kev twb kev txuas yog nyob ntawm no txhais tau tias kom tsis txhob welding nyob rau hauv txhua rooj plaub.Nws yog tsuas yog txuas los ntawm kev sib txuam threads nrog cov yeeb nkab yuav tsum tau ntsia.
2. Qhov (socket) weld flanges
Hom flange no feem ntau yog siv rau cov kav dej me me uas lub cheeb ntawm qhov tsis tshua muaj kub thiab tsis tshua muaj siab hauv cheeb tsam yog qhov tshwj xeeb los ntawm kev sib txuas uas cov yeeb nkab tau muab tso rau hauv lub flange kom ntseeg tau tias muaj kev sib txuas nrog ib leeg lossis ntau txoj kev fillet weld.Qhov no zam cov kev txwv cuam tshuam nrog threaded xaus piv rau lwm yam welded flange hom, yog li ua rau installation yooj yim.
3. Lap flanges
Lub caj dab flange yog ib hom flange uas yuav tsum tau lub stub kawg yuav tsum tau pob tw-welded mus rau ib tug haum thiaj li yuav siv tau nrog ib tug txhawb nqa flange los tsim ib tug flange kev twb kev txuas.Qhov kev tsim no tau ua rau txoj kev no nrov nyob rau hauv ntau lub tshuab uas qhov chaw lub cev muaj kev txwv, lossis qhov twg yuav tsum tau ua kom nquag plias, lossis qhov yuav tsum muaj kev saib xyuas siab.
4. zawv zawg flanges
zawv zawg flanges muaj ntau heev thiab muaj nyob rau hauv ntau qhov ntau thiab tsawg kom haum rau cov tshuab nrog cov nqi ntws siab thiab cov khoom siv.Tsuas yog sib piv cov flange mus rau sab nraud txoj kab uas hla ntawm cov yeeb nkab ua rau kev sib txuas yooj yim heev rau nruab.Kev txhim kho ntawm cov flanges no yog ib qho kev qhia me ntsis raws li nws yuav tsum tau muab cov hlua khi ntawm ob sab kom ruaj ntseg flange rau cov yeeb nkab.
5. Qhov muag tsis pom flanges
Cov hom flanges no zoo haum rau kev txiav cov kav dej.Lub qhov muag tsis pom lub phaj yog zoo li ib tug dawb paug disk uas yuav bolted.Thaum cov no raug ntsia zoo thiab ua ke nrog cov gasket raug, nws tso cai rau lub foob zoo heev thiab yooj yim tshem tawm thaum xav tau.
6. Weld Neck Flanges
Weld caj dab flanges zoo ib yam li lub puab tsaig flanges, tab sis xav tau pob tw vuam rau kev teeb tsa.Thiab qhov kev ncaj ncees ntawm qhov kev ua tau zoo ntawm qhov system no thiab nws lub peev xwm yuav tsum tau khoov ntau zaus thiab siv rau hauv kev kub siab thiab kub kub ua rau nws yog thawj qhov kev xaiv rau cov txheej txheem piping.
7. Tshwj xeeb flanges
Hom flange no yog qhov paub zoo tshaj plaws.Txawm li cas los xij, muaj ntau yam ntxiv tshwj xeeb flange hom muaj kom haum rau ntau yam kev siv thiab ib puag ncig.Muaj ntau yam kev xaiv xws li nipo flanges, weldo flanges, expansion flanges, orifices, ntev weld caj dab thiab reducer flanges.
5 Hom Flanges tshwj xeeb
1. WeldoFlaj
Weldo flange zoo ib yam li Nipo flange vim nws yog kev sib txuas ntawm pob tw-welding flanges thiab ceg haum sib txuas.Weldo flanges yog tsim los ntawm ib qho ntawm cov khoom forged steel, es tsis yog ib tus neeg raug welded ua ke.
2. Nipo flange
Nipoflange yog ib ceg yeeb nkab inclined ntawm lub kaum sab xis ntawm 90 degrees, nws yog cov khoom tsim los ntawm kev sib txuas pob tw-welding flanges thiab forged Nipolet.Thaum Nipo flange pom tau tias yog ib qho ruaj khov ib qho ntawm cov hlau forged, nws tsis nkag siab tias yog ob yam khoom sib txawv welded ua ke.Installation ntawm Nipoflange muaj welding rau Nipolet ib feem ntawm cov cuab yeej thiaj li khiav cov yeeb nkab thiab bolting lub flange. ib feem ntawm cov yeeb nkab stub flange los ntawm cov neeg ua haujlwm piping.
Nws yog ib qho tseem ceeb kom paub tias Nipo flanges muaj nyob rau hauv ntau hom ntaub ntawv xws li carbon, siab thiab tsis kub carbon steels, stainless hlau qib, thiab npib tsib xee alloys.Nipo flanges feem ntau yog ua los ntawm reinforced fabrication, uas yuav pab tau kom lawv ntxiv mechanical. lub zog thaum piv rau tus qauv Nipo flange.
3. Elboflange thiab Latroflange
Elboflange yog lub npe hu ua kev sib txuas ntawm flange thiab Elbolet thaum Latroflange hu ua kev sib txuas ntawm flange thiab Latrolet.Lub luj tshib flanges yog siv los ua cov kav dej ntawm lub kaum sab xis 45 degree.
4. Swivel nplhaib flanges
Daim ntawv thov ntawm lub nplhaib flanges yog los pab txhawb kev sib dhos ntawm lub qhov ntsia hlau ntawm ob lub flanges, uas yog qhov muaj txiaj ntsig zoo rau ntau lub sijhawm, xws li kev teeb tsa ntawm cov kav dej loj, cov kav dej hauv dej lossis cov kav dej sab nraud thiab cov chaw zoo sib xws.Cov hom flanges no tsim nyog rau kev thov cov kua dej hauv cov roj, roj, hydrocarbons, dej, tshuaj thiab lwm yam kev siv petrochemical thiab kev tswj dej.
Nyob rau hauv cov ntaub ntawv ntawm txoj kab uas hla loj, cov yeeb nkab yog haum nrog tus qauv pob tw weld flange ntawm ib kawg thiab ib tug swivel flange ntawm lwm yam.Qhov no ua hauj lwm los ntawm tsuas yog rotating lub swivel flange ntawm lub raj xa dej kom tus neeg teb xov tooj ua tiav kev sib raug zoo ntawm cov ntsia liaj qhov rooj qhov yooj yim heev thiab sai dua.
Qee cov qauv loj rau lub nplhaib flanges yog ASME lossis ANSI, DIN, BS, EN, ISO, thiab lwm yam.Ib qho ntawm cov qauv nrov tshaj plaws rau kev siv petrochemical yog ANSI lossis ASME B16.5 lossis ASME B16.47.Swivel flanges yog flanges uas tuaj yeem siv tau rau txhua qhov flange qauv qauv.Piv txwv li, weld caj dab, plam ons, lap joints, socket welds, thiab lwm yam., nyob rau hauv tag nrho cov ntaub ntawv qib, nyob rau hauv ib tug ntau yam ntawm ntau thiab tsawg los ntawm 3/8 "mus rau 60", thiab pressures ntawm 150 mus rau 2500. cov flanges no tau yooj yim. fabricated los ntawm carbon, alloy, thiab stainless hlau.
5. Kev nthuav dav flanges
Expansion flanges, yog siv los ua kom qhov loj me ntawm cov yeeb nkab los ntawm ib qho chaw tshwj xeeb mus rau lwm qhov txhawm rau txuas cov yeeb nkab rau lwm yam khoom siv xws li twj, compressors, thiab li qub uas pom tias muaj qhov sib txawv inlet.
Expansion flanges feem ntau yog pob tw-welded flanges uas muaj qhov loj heev ntawm qhov kawg uas tsis yog flanged.Nws tuaj yeem siv los ntxiv ib lossis ob qhov ntau thiab tsawg lossis txog li 4 ntiv tes rau hauv cov yeeb nkab khiav.Cov hom flanges no nyiam dua ua ke ntawm cov pob tw-weld reducers thiab txheem flanges vim lawv pheej yig dua thiab sib dua.Ib qho ntawm cov khoom siv feem ntau siv rau kev nthuav dav flanges yog A105 thiab stainless hlau ASTM A182.
Kev nthuav dav flanges muaj nyob rau hauv kev ntsuas siab thiab qhov ntau thiab tsawg raws li ANSI lossis ASME B16.5 specifications, uas feem ntau muaj convex lossis tiaj tus (RF lossis FF).Txo flanges, tseem hu ua txo flanges, ua hauj lwm muaj tseeb rov qab ua haujlwm piv rau expansion flanges, txhais tau tias lawv yog siv los txo qhov bore loj ntawm cov yeeb nkab.Txoj kab uas hla ntawm txoj kab khiav ntawm cov yeeb nkab tuaj yeem txo tau yooj yim, tab sis tsis yog ntau tshaj 1 lossis 2 qhov ntau thiab tsawg.Yog tias muaj kev sim ua kom txo qis tshaj qhov no, kev daws teeb meem raws li kev sib xyaw ua ke ntawm lub pob tw-welded reducers thiab cov qauv flanges yuav tsum tau siv.
Flange Sizing thiab kev txiav txim siab
Ntxiv nrog rau kev tsim qauv ntawm flange, nws qhov loj me yog qhov feem ntau yuav cuam tshuam rau kev xaiv flange thaum tsim, tswj thiab kho cov kav dej.Hloov chaw, kev txiav txim siab yuav tsum tau muab rau lub flange qhov sib txuas nrog cov yeeb nkab thiab cov gaskets siv los xyuas kom meej qhov loj me.Ntxiv rau qhov no, qee qhov kev txiav txim siab ntau yog raws li hauv qab no:
- Sab nraud txoj kab uas hla: sab nraud yog qhov kev ncua deb ntawm ob sab ntug ntawm lub ntsej muag flange.
- Thickness: Lub thickness yog ntsuas los ntawm sab nraud ntawm lub npoo.
- Bolt Circle Diameter: Qhov no yog qhov kev ncua deb ntawm qhov txheeb ze ntawm qhov ntsuas qhov nruab nrab mus rau qhov chaw.
- Yeeb Nkab Loj: Cov yeeb nkab loj yog qhov loj sib xws rau flange.
- Nominal Bore: Lub nominal bore yog qhov loj ntawm sab hauv txoj kab uas hla ntawm flange connector.
Flange Classification thiab Kev Pabcuam Qib
Flanges yog categorized feem ntau los ntawm lawv lub peev xwm los tiv thaiv qhov kub thiab txias sib txawv.Nws raug xaiv los ntawm kev siv cov ntawv lossis cov lus "#", "lb" lossis "chav kawm".Cov no yog cov lus hloov pauv tau thiab kuj txawv ntawm cheeb tsam lossis tus neeg muag khoom.Cov kev paub zoo tshaj plaws tau teev tseg hauv qab no:
- 150 #
- 300 #
- 600 #
- 900 #
- 1500 #
- 2500 #
Tib lub siab thiab kub kam rau ua qhov sib txawv nyob ntawm cov khoom siv, flange tsim thiab flange loj.Txawm li cas los xij, tsuas yog qhov tsis tu ncua yog qhov ntsuas siab, uas txo qis thaum qhov kub nce.
Flange Lub ntsej muag hom
Lub ntsej muag hom kuj yog ib qho tseem ceeb heev tus yam ntxwv uas muaj feem xyuam rau qhov kawg kev ua tau zoo thiab kev pab lub neej ntawm flange.Yog li ntawd, qee qhov tseem ceeb tshaj plaws ntawm flange ntsej muag tau txheeb xyuas hauv qab no:
1. Flat Flange (FF)
Lub gasket nto ntawm lub tiaj tus flange yog nyob rau hauv tib lub dav hlau raws li qhov chaw ntawm lub bolted ncej.Cov khoom lag luam uas siv cov flanges tiaj tus feem ntau yog cov khoom tsim nrog pwm kom phim lub flange lossis flange npog.Flat flanges yuav tsum tsis txhob muab tso rau ntawm inverted sab flanges.ASME B31.1 hais tias thaum koom nrog ca cam khwb cia hlau flanges rau carbon steel flanges, lub ntsej muag tsa ntawm cov carbon steel flanges yuav tsum tau muab tshem tawm thiab ib tug tag nrho lub ntsej muag gasket yuav tsum tau.Qhov no yog los tiv thaiv me me, nkig cam khwb cia hlau flanges los ntawm txaws rau hauv qhov khoob uas tsim los ntawm lub qhov ntswg tsa ntawm cov hlau flange.
Hom flange ntsej muag no yog siv los tsim cov khoom siv thiab cov li qub rau txhua daim ntawv thov uas cam khwb cia hlau yog tsim.Cam khwb cia hlau yog nkig dua thiab feem ntau yog siv rau qhov kub thiab txias, tsis tshua muaj siab siv.Lub ntsej muag tiaj tus tso cai rau ob qho tib si flanges ua kom tiav kev sib cuag thoob plaws tag nrho saum npoo.Flat Flanges (FF) muaj qhov chaw sib cuag uas yog qhov siab tib yam li cov bolt threads ntawm flange.Lub ntsej muag tag nrho yog siv ntawm ob lub flanges thiab feem ntau yog mos.Raws li ASME B31.3, cov flanges tiaj tus yuav tsum tsis txhob sib xyaw nrog cov flanges siab vim tias muaj peev xwm ua kom tawg los ntawm qhov ua rau flanged sib koom ua ke.
2. Lub ntsej muag Flange (RF)
Lub ntsej muag tsa flange yog hom siv ntau tshaj plaws hauv cov ntawv thov fabricator thiab pom tau yooj yim.Nws yog hu ua convex vim lub ntsej muag ntawm lub gasket nyob saum lub ntsej muag ntawm lub nplhaib ntsia liaj qhov rooj.Txhua hom kev sib ntsib yuav tsum tau siv ntau hom gaskets, nrog rau ntau yam ntawm lub nplhaib tiaj tiaj thiab cov hlau sib xyaw xws li kauv-qhov txhab thiab ob daim ntawv sheathed.
RF flanges yog tsim los ua kom pom tseeb ntxiv rau ntawm qhov chaw me me ntawm lub gasket, yog li txhim kho lub siab tswj ntawm qhov sib koom ua ke.diameters thiab qhov siab los ntawm qib siab thiab txoj kab uas hla tau piav qhia hauv ASME B16.5.Flange siab theem qhia qhov siab ntawm lub ntsej muag raug lifted.RF flanges yog npaj los mloog zoo ntxiv rau ntawm qhov chaw me me ntawm lub gasket, yog li ua kom lub siab-tswj muaj peev xwm ntawm kev sib koom ua ke. Txoj kab uas hla thiab qhov siab ntawm chav kawm siab thiab txoj kab uas hla tau piav qhia hauv ASME B16.5.Kev ntsuas siab flange.
3. Nplhaib flange (RTJ)
Thaum cov hlau-rau-hlau foob ntawm kev sib txuas flanges yog qhov yuav tsum tau ua (uas yog qhov kev siv rau kev kub siab thiab kub kub, piv txwv li, saum toj 700/800 C °), lub nplhaib Joint Flange (RTJ) yog siv.
Lub nplhaib sib koom flange muaj ib lub voj voog uas haum rau lub nplhaib sib koom ua ke (oval lossis duab plaub).
Thaum ob lub nplhaib sib koom ua ke flanges tau bolted ua ke thiab tom qab ntawd nruj, lub zog siv lub nplhaib deforms lub gasket nyob rau hauv qhov zawj ntawm lub flange, tsim kom muaj ib tug nruj heev hlau-rau-hlau foob.Yuav kom ua tiav qhov no, cov khoom siv ntawm lub nplhaib sib koom ua ke yuav tsum yog softer (ntau dua) dua li cov khoom ntawm flanges.
RTJ flanges tuaj yeem raug kaw nrog RTJ gaskets ntawm ntau hom (R, RX, BX) thiab profiles (xws li, octagonal / elliptical rau R hom).
Qhov feem ntau RTJ gasket yog R hom nrog octagonal cross-section, raws li nws ua kom lub foob muaj zog heev (oval cross-section yog hom qub).Txawm li cas los xij, "paj zawg" tsim lees txais ob hom RTJ gaskets nrog octagonal lossis oval cross-section.
4. Tus nplaig thiab zawj flanges (T & G)
Ob tus nplaig thiab zawj flanges (T & G lub ntsej muag) haum zoo kawg nkaus: ib lub flange muaj lub nplhaib tsa thiab lwm qhov muaj grooves uas lawv haum yooj yim (tus nplaig nkag mus rau hauv qhov zawj thiab kaw qhov sib koom ua ke).
Tus nplaig thiab zawj flanges muaj nyob rau hauv qhov loj thiab me.
5. Txiv neej thiab poj niam Flanges (M & F)
Zoo ib yam li tus nplaig thiab zawj flanges, txiv neej thiab poj niam flanges (M & F ntsej muag hom) sib phim.
Ib lub flange muaj ib cheeb tsam uas nthuav dav tshaj nws qhov chaw saum npoo av, tus txiv neej flange, thiab lwm qhov flange muaj qhov sib txuam kev nyuaj siab machined rau hauv lub ntsej muag, tus poj niam flange.
Flange nto tiav
Txhawm rau kom muaj kev sib haum xeeb ntawm flange rau lub gasket thiab mating flange, thaj tsam ntawm flange yuav tsum muaj qee qhov kev ntxhib los mos (RF thiab FF flange tiav nkaus xwb).Hom roughness ntawm flange lub ntsej muag nto txhais cov hom "flange tiav".
Hom hom yog Tshuag, concentric serrated, kauv serrated thiab du flange ntsej muag.
Muaj plaub qhov yooj yim nto tiav rau steel flanges, txawm li cas los xij, lub hom phiaj ntawm txhua hom flange nto tiav yog los tsim qhov xav tau roughness ntawm flange nto kom ntseeg tau tias muaj kev sib haum xeeb ntawm flange, gasket thiab mating flange los muab cov foob zoo. .
Post lub sij hawm: Oct-08-2023