Flanges yog ib qho tseem ceeb hauv cov kav dej, siv los koom nrog cov kav dej, li qub, twj, thiab lwm yam khoom siv. Thaum xaiv flanges, ob tug qauv tseem ceeb yuav tsum tau txiav txim siab – DN (Dimension Nominal) thiab ANSI (Lub koom haum American National Standards Institute). Thaum ob qho tib si muaj ntau, muaj qee qhov sib txawv tseem ceeb kom nkag siab thaum xaiv ntawm DN vs ANSI flanges. Kab lus no yuav sib piv dn vs ansi flanges kom ntxaws los pab koj xaiv txoj cai.
Taw qhia
Flanges muab ib txoj hauv kev los txuas cov kav dej thiab hloov cov kua dej los yog cov pa roj los ntawm kev bolting ua ke nrog gaskets nruab nrab ntawm lawv kom kaw qhov kev sib txuas.. Lawv tau siv ntau daim ntawv thov los ntawm kev lag luam roj thiab roj rau kev ua zaub mov thiab dej haus, fais fab nroj tsuag, thiab ntau dua.
Muaj ob lub ntsiab lus thoob ntiaj teb rau flange qhov ntev thiab kev ntsuas:
- DN – Dimensional Nominal (European / ISO txuj)
- ANSI – Lub koom haum American National Standards Institute (American txuj)
Thaum ob leeg ua raws tib txoj cai tsim, muaj qhov sib txawv ntawm qhov ntev, kev ntsuas siab, ntsej muag, thiab bolt qauv uas ua rau lawv tsis hloov pauv. Kev nkag siab dn vs ansi flanges yuav xyuas kom koj xaiv txoj cai flanges rau koj cov kav dej.
Qhov txawv ntawm DN thiab ANSI Flanges
Thaum ntsuas dn vs ansi flanges, cov hauv qab no yog cov ntsiab lus tseem ceeb los sib piv:
Qhov ntev
- DN flanges yog raws li cov yeeb nkab nominal qhov ntau thiab tsawg nrog ntau txoj kab uas hla increments.
- ANSI flanges muaj tus qauv nti qhov ntev tsis ncaj qha ntsig txog cov yeeb nkab loj.
Qhov no txhais tau tias DN 100 flange dlhos nrog 100mm yeeb nkab, thaum ANSI 4 "flange muaj ib tug bore ntawm approx. 4.5”. DN flanges siv metrics thaum ANSI siv imperial units.
Kev ntsuas siab
- DN flanges siv PN ntsuas – qhov siab tshaj plaws nyob rau hauv BAR ntawm ib tug muab kub.
- ANSI flanges siv Class rating – qhov siab tshaj psi siab raws li cov khoom siv zog.
Piv txwv li, DN150 PN16 flange = ANSI 6" 150# flange nyob rau hauv siab tuav muaj peev xwm.
Facing Styles
- DN flanges siv Daim Ntawv B1 lossis B2 ntsib.
- ANSI flanges siv Raised ntsej muag (RF) los yog Flat Face (FF) ntsej muag.
B1 zoo ib yam li RF, thaum B2 piv rau FF. Lub ntsej muag yuav tsum sib phim rau kev sib khi kom zoo.
Bolt Vajvoog
- DN bolt qhov yog nyob ntawm nominal txoj kab uas hla.
- ANSI bolt lub voj voog yog raws li qhov ntsuas flange hauv chav kawm.
Bolt qhov yuav tsis sib haum ntawm ob hom.
Khoom siv
- DN flanges siv cov khoom siv ntsuas ntsuas – P250GH, 1.4408, lwm.
- ANSI siv cov qib imperial/US – A105, A182 F316L, lwm.
Cov khoom siv yuav tsum sib npaug los tswj qhov kub thiab txias uas yuav tsum tau ua.
Raws li koj tau pom, dn vs ansi flanges muaj ob peb qhov sib txawv uas ua rau lawv tsis hloov pauv. Kev sib xyaw ntawm ob feem ntau ua rau xau, kev puas tsuaj, thiab lwm yam teeb meem.
DN vs ANSI Flanges Loj Daim Ntawv Qhia
Txhawm rau sib piv qhov ntau thiab tsawg dn vs ansi flanges, xa mus rau daim ntawv qhia siv tau yooj yim no:
| DN Flange | Nominal Pipe Loj | ANSI Flange muaj |
|---|---|---|
| DN15 | 15mm | 1⁄2” |
| DN 20 | 20mm | 3⁄4” |
| DN 25 | 25mm | 1” |
| DN 32 | 32mm | 11⁄4” |
| DN40 | 40mm | 11⁄2” |
| DN 50 | 50mm | 2” |
| DN 65 | 65mm | 21⁄2” |
| DN 80 | 80mm | 3” |
| DN100 | 100mm | 4” |
| DN125 | 125mm | 5” |
| DN150 | 150mm | 6” |
| DN200 | 200mm | 8” |
| DN 250 | 250mm | 10” |
| DN 300 Nws | 300mm | 12” |
| DN350 | 350mm | 14” |
| DN400 | 400mm | 16” |
Qhov no suav nrog feem ntau dn vs ansi flanges qhov ntau thiab tsawg mus txog 16 ". Nws muab qhov kwv yees sib piv nkaus xwb – qhov ntev yuav txawv. Paub meej cov lus qhia ua ntej sib hloov ANSI thiab DN flanges.
DN vs ANSI Flange FAQ
Qee cov lus nug nquag txog dn vs ansi flanges suav nrog:
Puas yog DN thiab ANSI flanges sib pauv tau?
Tsis muaj, DN thiab ANSI flanges tsis tuaj yeem hloov ncaj qha vim qhov sib txawv ntawm qhov ntev, kev ntaus nqi, ntsej muag, thiab cov ntaub ntawv. Kev sim ua phooj ywg DN flange rau ANSI flange yuav ua rau muaj kev sib raug zoo.
Koj tuaj yeem siv DN flange ntawm ANSI yeeb nkab?
Tsis muaj, Qhov sib txawv qhov ntev txhais tau hais tias DN flange yuav tsis raug kab nrog ANSI yeeb nkab ntau thiab tsawg. Lawv tau tsim los ua cov tshuab kom phim DN flanges nrog DN piping, thiab ANSI nrog ANSI.
Yuav ua li cas hloov DN rau ANSI flange loj?
Tsis muaj kev hloov pauv ncaj qha ntawm DN vs ANSI yeeb nkab qhov ntau thiab tsawg. Daim ntawv qhia saum toj no muab qhov kwv yees sib npaug rau DN thiab ANSI nominal flange qhov ntau thiab tsawg. Nco ntsoov xyuas qhov ntsuas qhov tseeb – qhov ntev tuaj yeem sib txawv ntawm cov qauv.
Kuv yuav tsum siv DN lossis ANSI flanges?
Yog tias koj cov kav dej nyob hauv qhov chaw siv ISO cov qauv (Teb chaws Europe, Middle East, Asia), DN flanges yuav xav tau. Rau North America siv cov qauv ANSI, ANSI flanges yuav yog qhov kev xaiv ib txwm muaj. Siv tus qauv sib piv rau koj cov kav dej kom haum thiab ua haujlwm.
Koj puas tuaj yeem ntsia hlau DN thiab ANSI flanges ua ke?
Koj yuav tsum tsis txhob bolt ua ke tsis sib haum DN vs ANSI flanges. Qhov sib txawv bolt lub voj voog yuav tsis sib haum, uas ua rau lub rooj zaum tsis zoo, xau, thiab tej zaum kev puas tsuaj nyob rau hauv siab.
Xaus
Thaum nws los txog rau xaiv flanges, Kev nkag siab qhov sib txawv tseem ceeb ntawm DN vs ANSI cov qauv yog qhov tseem ceeb. Cov flanges tsis sib haum tuaj yeem ua rau xau, khoom puas, thiab kho cov nqi. Los ntawm kev sib piv qhov ntev, kev ntsuas siab, ntsej muag, thiab cov ntaub ntawv, koj tuaj yeem xyuas kom koj xaiv tau DN lossis ANSI flanges txhua zaus.
Nrog cov khoom siv thoob plaws ntiaj teb, Jmet Corp muab ob qho tib si DN thiab ANSI flanges kom tau raws li cov cai hauv zos. Tiv tauj peb hnub no los tham txog koj daim ntawv thov thiab tau txais kev pab xaiv cov flanges zoo tagnrho. Peb cov kws tshaj lij tuaj yeem taug kev koj los ntawm dn vs ansi flanges cov qauv thiab muab kev xa khoom zoo raws nraim qhov koj xav tau. Tau txais cov flanges txoj cai kom koj cov haujlwm ua haujlwm tau zoo.