Hom Flanges
Flange hom
Raws li twb tau piav ua ntej, feem ntau siv flange hom ASME B16.5 yog: Vuam Neck, Slip On, Socket Weld, Lap Joint, Threaded thiab Dig Muag flange. Hauv qab no koj yuav pom cov lus piav qhia luv luv thiab txhais ntawm txhua hom, ua tiav nrog cov duab ntxaws.
Feem ntau hom flange
Vuam caj dab flange
Vuam Neck Flanges yog ib qho yooj yim kom paub txog ntawm qhov ntev tapered hub, uas maj mam dhau mus rau phab ntsa thickness los ntawm ib tug yeeb nkab los yog haum.
Qhov ntev tapered hub muab ib qho tseem ceeb ntxiv rau kev siv nyob rau hauv ob peb daim ntawv thov uas muaj kev kub siab, sub-zero thiab / los yog siab kub. Qhov kev hloov pauv ntawm flange thickness mus rau cov yeeb nkab lossis cov phab ntsa thickness cuam tshuam los ntawm lub taper yog qhov muaj txiaj ntsig zoo, nyob rau hauv cov xwm txheej ntawm rov khoov, tshwm sim los ntawm kab nthuav dav lossis lwm yam tsis sib xws.
Cov flanges no dhuav kom haum rau sab hauv txoj kab uas hla ntawm cov yeeb nkab mating lossis haum yog li yuav tsis muaj kev txwv ntawm cov khoom ntws. Qhov no tiv thaiv turbulence ntawm qhov sib koom ua ke thiab txo kev yaig. Lawv kuj muab cov kev ntxhov siab zoo tshaj plaws los ntawm lub hub tapered thiab tau yooj yim radiographed rau qhov tsis zoo.
Hom flange no yuav raug welded rau ib lub yeeb nkab lossis haum nrog ib qho kev nkag mus tag nrho, V weld (Buttweld).
Paub meej ntawm Vuam Neck flange
1. Weld caj dab flange2. Butt Weld
3. Pipe los yog Fitting
Slip on flange
Lub zog suav los ntawm Slip On flange nyob rau hauv lub siab sab hauv yog ntawm qhov kev txiav txim ntawm ob feem peb ntawm Vuam Neck flanges, thiab lawv lub neej nyob rau hauv qaug zog yog li ntawm ib feem peb ntawm tom kawg.
Kev sib txuas nrog cov yeeb nkab yog ua tiav nrog 2 fillet welds, nrog rau sab nraud thiab sab hauv ntawm flange.
X ntsuas ntawm daim duab, yog kwv yees li:
Phab ntsa thickness ntawm cov yeeb nkab + 3 hli.
Qhov chaw no yog qhov tsim nyog, kom tsis txhob ua puas lub ntsej muag flange, thaum lub sij hawm vuam txheej txheem.
Qhov tsis zoo ntawm flange yog, cov ntsiab lus ntawd ib txwm ua ntej lub yeeb nkab yuav tsum tau welded thiab tom qab ntawd tsuas yog haum. Kev sib xyaw ua ke ntawm flange thiab lub luj tshib lossis flange thiab tee tsis tuaj yeem ua tau, vim hais tias lub npe fittings tsis muaj qhov kawg, uas ua tiav hauv Slip On flange.
Cov ntsiab lus ntawm Slip On flange
1. Slip on flange2. Filled weld sab nraud
3. Filled weld sab hauv4. Yeeb
Qhov (socket) Weld flange
Qhov (socket Weld flanges) tau pib tsim los siv rau cov kav dej me me. Lawv lub zog zoo li qub yog sib npaug rau Slip On flanges, tab sis lawv lub zog qaug zog 50% ntau dua ob-welded Slip On flanges.
Kev sib txuas nrog cov yeeb nkab yog ua tiav nrog 1 fillet weld, nyob rau sab nraud ntawm flange. Tab sis ua ntej welding, ib qho chaw yuav tsum tau tsim ntawm flange los yog haum thiab cov yeeb nkab.
ASME B31.1 1998 127.3 Kev Npaj rau Vuam (E) Socket Weld Assembly hais tias:
Hauv kev sib dhos ntawm qhov sib koom ua ntej vuam, cov yeeb nkab lossis lub raj yuav tsum tau muab tso rau hauv lub qhov (socket) mus rau qhov tob tshaj plaws thiab tom qab ntawd tshem tawm kwv yees li 1/16 "(1.6 hli) deb ntawm kev sib cuag ntawm qhov kawg ntawm cov yeeb nkab thiab lub xub pwg ntawm lub qhov (socket).
Lub hom phiaj rau qhov kev tshem tawm hauv qab hauv qhov (socket Weld) feem ntau yog txhawm rau txo cov kev ntxhov siab seem ntawm cov hauv paus hniav uas tuaj yeem tshwm sim thaum lub sij hawm solidification ntawm cov hlau weld. Daim duab qhia koj X ntsuas rau qhov sib txawv ntawm qhov nthuav dav.
Qhov tsis zoo ntawm qhov flange no yog qhov sib txawv, uas yuav tsum tau ua. Los ntawm cov khoom corrosive, thiab feem ntau hauv cov yeeb nkab steel hlau, qhov tawg ntawm cov yeeb nkab thiab flange tuaj yeem muab teeb meem corrosion. Hauv qee cov txheej txheem no flange kuj tsis tso cai. Kuv tsis yog tus kws tshaj lij hauv qhov teeb meem no, tab sis hauv internet, koj yuav pom ntau cov ntaub ntawv hais txog cov ntaub ntawv ntawm corrosion.
Tsis tas li ntawd rau qhov flange suav, cov ntsiab lus ntawd ib txwm ua ntej lub yeeb nkab yuav tsum tau welded thiab tom qab ntawd tsuas yog haum.
Cov ntsiab lus ntawm Socket Weld Flange
1. Qhov (socket) Weld flange2. Filled weld3. Yeeb
X= Kev nthuav dav
Lap Joint flange
Lap Joint Flanges muaj tag nrho cov tib qhov ntev li lwm yam flange npe ntawm nplooj ntawv no tab sis nws tsis muaj lub ntsej muag, lawv siv ua ke nrog "Lap Joint Stub End".
Cov flanges no yuav luag zoo ib yam rau Slip On flange nrog rau qhov tshwj tsis yog lub vojvoog ntawm qhov kev sib tshuam ntawm lub ntsej muag flange thiab lub bore kom haum rau qhov flanged ntawm Stub End.
Lawv lub peev xwm tuav tau me ntsis, yog tias muaj, zoo dua li ntawm Slip On flanges thiab lub neej qaug zog rau kev sib dhos tsuas yog ib feem kaum ntawm Weld Neck flanges.
Lawv tuaj yeem siv rau txhua qhov kev ntxhov siab thiab muaj nyob rau hauv ntau qhov loj. Cov flanges plam dhau ntawm cov yeeb nkab, thiab tsis welded los yog lwm yam fastened rau nws. Bolting siab yog kis mus rau lub gasket los ntawm lub siab ntawm lub flange tiv thaiv sab nraum qab ntawm cov yeeb nkab ncej (Stub End).
Lap Joint flanges muaj qee qhov tshwj xeeb zoo:
- Kev ywj pheej los tig mus ncig ntawm cov yeeb nkab ua kom yooj yim rau txoj kab ntawm kev tawm tsam flange bolt qhov.
- Tsis muaj kev sib cuag nrog cov kua hauv cov yeeb nkab feem ntau tso cai rau kev siv pheej yig carbon steel flanges nrog corrosion resistant yeeb nkab.
- Nyob rau hauv cov tshuab uas erode los yog corrode sai, cov flanges yuav khaws cia rau rov siv dua.
Cov ntsiab lus ntawm Lap Joint Flange
1. Lap Joint flange2. Stub End
3. Butt weld4. Pipe los yog Fitting
Stub End
Lub Stub End ib txwm yuav siv nrog Lap Joint flange, ua lub nraub qaum flange.
Qhov kev sib txuas ntawm flange no yog siv, hauv kev siv qis thiab tsis tseem ceeb, thiab yog ib txoj hauv kev pheej yig ntawm flanging.
Hauv cov yeeb nkab steel hlau, piv txwv li, cov pa roj carbon steel flange tuaj yeem siv tau, vim tias lawv tsis tuaj yeem cuam tshuam nrog cov khoom hauv cov yeeb nkab.
Stub Ends muaj nyob rau hauv yuav luag tag nrho cov yeeb nkab diameters. Dimensions thiab dimension tolerances yog txhais nyob rau hauv ASME B.16.9 tus qauv. Lub teeb yuag corrosion resistant Stub Ends (fittings) yog txhais hauv MSS SP43.
Lap Joint Flange nrog Stub End
Threaded flange
Threaded Flanges yog siv rau cov xwm txheej tshwj xeeb nrog lawv qhov txiaj ntsig tseem ceeb yog tias lawv tuaj yeem txuas rau cov yeeb nkab yam tsis muaj vuam. Qee lub sij hawm ib lub foob weld kuj tseem siv nrog kev sib txuas ntawm threaded.
Txawm hais tias tseem muaj nyob rau hauv ntau qhov ntau thiab tsawg thiab kev ntsuas siab, cov ntsia hlau fittings niaj hnub no tau siv yuav luag tshwj xeeb hauv cov yeeb nkab me me.
Lub threaded flange los yog haum tsis haum rau cov yeeb nkab system nrog nyias phab ntsa thickness, vim hais tias tej xov ntawm ib tug yeeb nkab yog tsis tau. Yog li, cov phab ntsa tuab tuab yuav tsum xaiv ... yog dab tsi yog tuab?
ASME B31.3 Piping Guide hais tias:
Qhov twg cov yeeb nkab steel yog threaded thiab siv rau chav ua haujlwm siab tshaj 250 psi lossis rau kev pabcuam dej siab tshaj 100 psi nrog cov dej kub siab tshaj 220 ° F, cov yeeb nkab yuav tsum tsis muaj seamless thiab muaj qhov tuab tsawg kawg nkaus sib npaug rau 80 ntawm ASME B36.10.
Cov ntsiab lus ntawm Threaded flange
1. Threaded flange2. Xov3. Pipe los yog Fitting
Qhov muag tsis pom flange
Qhov muag tsis pom Flanges yog tsim los tsis muaj bore thiab siv los ua kom tsis muaj qhov kawg ntawm cov kav dej, Valves thiab lub siab lub nkoj qhib.
Los ntawm qhov pom ntawm lub siab sab hauv thiab ntsia liaj qhov rooj, qhov muag tsis pom flanges, tshwj xeeb tshaj yog nyob rau hauv qhov ntau thiab tsawg, yog cov flange siab tshaj plaws.
Txawm li cas los xij, feem ntau ntawm cov kev ntxhov siab no yog hom dabtsi yog khoov nyob ze ntawm qhov chaw, thiab vim tias tsis muaj cov qauv hauv txoj kab uas hla, cov flanges no haum rau cov ntawv thov kub siab dua.
Paub meej ntawm qhov muag tsis pom flange
1. Qhov muag tsis pom flange2. Stud Bolt3. Gasket4. Lwm yam flange
Remark(s) of the Author…
Ib qho yooj yim los ua 1/16 "Gap…
- Koj puas tau pom lub Socket Weld contraction nplhaib?.
Nws yog lub nplhaib sib cais uas tau tsim thiab tsim los muab qhov ntsuas ua ntej 1/16 ″ qhov sib txawv yam tsawg kawg nkaus rau lub qhov (socket welds). Ua los ntawm cov ntawv pov thawj stainless hlau, thiab tiv thaiv corrosion los ntawm cov tshuaj, cov khoom siv hluav taws xob thiab dej. Thaum muab tso rau hauv qhov haum lub nplhaib ua ib feem ntawm qhov sib koom ua ke. Nws yuav tsis rattle los yog vibrate txawm nyob rau hauv siab heev.
Lwm txoj hauv kev yog siv hauv dej-soluble board. Ua cov nplhaib nrog lub qhov punch nrog sab nraud thiab sab hauv txoj kab uas hla ntawm cov yeeb nkab. Ntxig lub nplhaib rau hauv flange lossis haum thiab tom qab hydrotesting tsis muaj lub nplhaib ntxiv lawm.
Rau ob qho kev daws teeb meem, nug koj tus neeg siv khoom kom tso cai.
Tuav lawv ntawm nws qhov chaw…
- Yog hais tias lub Lap Joint flanged kev twb kev txuas yuav tsum tau disassembled, piv txwv li los hloov lub gasket, nws tsis yog ib txwm muaj peev xwm ua li ntawd raws li cov pa. Txoj kev ua qauv yog siv lub flange spreader lossis crowbar uas thawb tawm ntawm ob lub flanges.
Los ntawm Lap Joint flanges uas tsis tuaj yeem ua tau, vim tias cov xaub rov qab hla cov yeeb nkab, thaum Stub Ends nyob ua ke. Txhawm rau tiv thaiv qhov ntawd, feem ntau yog nyob rau ntawm 3 qhov chaw, ib millimeters qab lub flange, ntawm Stub End, luv daim tiaj tus hlau, yuav raug welded.
Tsis muaj txoj cai dav dav li cas Lap Joint flange yuav tsum tuav ntawm nws qhov chaw, thiab yog li nws tuaj yeem sib txawv raws li cov neeg siv khoom tshwj xeeb.
Koj puas paub tias…?
- Ntawm qhov tsawg tshaj plaws, tus nqi ntawm phab ntsa poob thaum threading tiag tiag sib npaug li 55% ntawm cov yeeb nkab phab ntsa.
Butt welds vs Fillet welds
- Hauv cov tshuab uas muaj kev kub ntxhov thiab kub, peb yuav tsum tsis txhob siv cov fillet welds. Butt welds, nyob rau hauv xws li systems yuav tsum tau siv. Lub zog ntawm lub pob tw weld yog tsawg kawg yog lub zog ntawm cov khoom siv hauv paus. Lub zog ntawm fillet welds hais txog lub zog ntawm lub pob tw weld, yog li ib feem peb.
Ntawm qhov kub siab dua thiab kub, qhov nthuav dav thiab kev cog lus ua rau muaj kev tawg loj heev hauv cov welds thiab yog li kev siv pob tw welds yog qhov tseem ceeb.
Rau conduits rau cov tshuab tseem ceeb xws li twj, compressors thiab turbines, uas raug kev co (ntxiv rau qhov nthuav thiab contraction), peb yuav tsum tsis txhob siv cov fillet welds los yog threaded sib txuas.
Fillet welds muaj qhov rhiab heev rau cov kab nrib pleb vim muaj kev ntxhov siab, thaum lub pob tw welds yog tus cwj pwm los ntawm kev sib hloov ntawm cov tensions.
Yog li, rau qhov xwm txheej tseem ceeb, peb yuav tsum siv flanges txuas nrog lub pob tw vuam zoo li lub caj dab thiab lub nplhaib hom sib koom ua ke, thiab tsis txhob siv cov flanges txuas los ntawm fillet welds zoo li Slip On lossis Socket Weld.
Post lub sij hawm: Jun-05-2020