Kev ntsuas siab ntawm flange yog qhov tseem ceeb ntawm kev tsim cov kav dej. Nws qhia txog qhov siab tshaj plaws uas lub flange tuaj yeem tiv taus zoo nyob rau hauv cov xwm txheej tshwj xeeb. Xaiv qhov kev ntsuas siab tsim nyog yog qhov tseem ceeb los xyuas kom muaj kev nyab xeeb, kev ntseeg tau, thiab kev ua haujlwm ntev ntawm cov kav dej.
Teb chaws Europe thiabTebchaws Meskasmuaj flange siab ntsuas kev faib cov tshuab, thiab muaj qhov sib txawv hauv kev ntsuam xyuas, qhov kev thov, cov chav ntsuas siab, thiab lwm yam.
European System
Lub flange siab theem nyob rau hauv cov teb chaws Europe yog qhia los ntawm lubnominal siab PN.
PN:Lub siab tsim ntawm flange ntawm qhov ntsuas kub ntawm 20 degree, hauv qhov bar. Tus nqi PN ncaj qha qhia qhov flange qhov siab tshaj plaws-cov kabmob muaj peev xwm ntawm tus qauv kub.
Hauv kev ua haujlwm tiag tiag, lub peev xwm siab ntawm PN tus nqi yuav hloov nrog qhov kub thiab txias ntawm qhov nruab nrab:
Raws li qhov kub nce, lub peev xwm siab feem ntau txo qis (cov khoom siv zog txo).
Corrosive lossis viscous media yuav xav tau kev ua haujlwm siab dua.
Qhov cuam tshuam ntawm qhov kub thiab txias ntawm qhov siab
Qhov tseeb siab tsis kam ntawm flange yuav hloov nrog qhov kub thiab txias:
Qhov kub thiab txias ib puag ncig (hauv qab 20 degree):Lub zog ua haujlwm tiag tiag yuav siab dua 20 bar, vim tias lub zog ntawm cov khoom siv feem ntau yog siab dua ntawm qhov kub thiab txias.
Ib puag ncig kub kub (siab tshaj 20 degree):Qhov tseeb ua haujlwm siab yuav qis dua 20 bar, vim tias lub zog ntawm cov khoom yuav txo qis ntawm qhov kub thiab txias.
Common PN Ratings:
|
PN Tus nqi |
Sib npaug siab (bar) |
Sib npaug siab (MPa) |
|
NP 2.5 |
2.5bar ua |
0.25 MPa |
|
NP 6 |
6 bar |
0.6 MPa |
|
NP 10 |
10 bar |
1. 0 MPa |
|
NP 16 |
16 bar |
1.6 MPa siab |
|
NP 20 |
20 bar |
2. 0 MPa |
|
NP 25 |
25bar ua |
2.5 MPa |
|
NP40 |
40 bar |
4. 0 MPa |
|
PAB 63 |
63bar ua |
6.3 MPa ua haujlwm siab |
|
PIB 100 |
100 bar |
10 MPa |
|
PAB 160 |
160bar ua |
16 MPa |
|
PAB 250 |
250bar ua |
25 MPa |
|
SIB 320 |
320bar ua |
32 MPa |
|
PIB 400 |
400 bar |
40 MPa |
Cov xovxwm nominal tuaj yeem muab faib ua qhov siab qis, nruab nrab siab, lossis siab siab raws li nws tus nqi PN.
|
PN ntau |
Daim ntawv thov |
|
|
Tsawg-siab system |
PN 2 5-NP 16 |
Cov kav dej dav dav, suav nrog cov kav dej thiab cov kav dej Tsawg-siab hloov ntawm chav, roj, thiab kua Tsis yog-corrosive media thiab chav ua haujlwm kub ua haujlwm Cov cuab yeej siv: cua sov, qhov cua, thiab cua txias (HVAC), kev ua liaj ua teb irrigation, thiab cov kav dej muaj |
|
Nruab nrab-siab system |
NP 25 – PN 40 |
Cov txheej txheem muaj cov kav dej thiab kev thauj mus los ntawm cov kua nruab nrab Corrosive kua thiab roj kis tau tus mob nyob rau hauv cov tshuaj thiab petrochemical teb Chav kav dej ntawm chav turbines, roj teb dej txhaj tshuab Cov cuab yeej siv: cov khoom siv tshuaj, cov kav dej boiler |
|
High-pressure system |
PN 64 thiab siab dua |
High-pressure steam, gas, kua, thiab corrosive media kis tau tus mob Cov kav dej kub siab hauv kev lag luam roj thiab roj (xws li, cov khoom siv hauv lub taub hau, roj thiab cov kav dej) Boilers thiab cov khoom siv fais fab chaw nres tsheb nyob rau hauv qhov kub thiab txias siab Cov cuab yeej siv dav dav: cov tshuab hluav taws xob siab, cov hlab ntsha siab, cov kav hluav taws xob cog |
American System
Nyob rau hauv American standard system, lub siab ntsuas ntawm lub flange yog qhia raws li Class, kuj hu uaANSI Class ratings, hauv psi (pounds ib square inch).
Chav kawm tus nqi ntawm flange qhia txog qhov ua haujlwm siab tshaj plaws uas lub flange tuaj yeem tiv taus ntawm qhov kub thiab txias.
Cov kev ntsuas siab
Chav Kawm 150
Chav Kawm 300
Chav Kawm 400
Chav Kawm 600
Chav Kawm 900
Chav Kawm 1500
Chav Kawm 2500
Raws li qhov sib txawv ntawm qhov sib txawv, Chav kawm flanges tuaj yeem muab faib ua qib siab, nruab nrab-siab, thiab qib siab.
|
Chav kawm |
Daim ntawv thov |
|
|
Tsawg-siab |
Chav Kawm 150 Chav Kawm 300 |
Cov flanges uas tsis tshua muaj siab yog feem ntau siv rau hauv cov kav dej uas muaj kev ua haujlwm tsawg, ua rau lawv tsim nyog rau kev lag luam, kev tsim kho, HVAC, thiab cov kav dej kav dej, thiab lwm yam kev siv. |
|
Nruab nrab-siab |
Chav Kawm 400 Chav Kawm 600 Chav Kawm 900 |
Nruab nrab-siab flanges yog siv nyob rau hauv nruab nrab-siab piping systems thiab yog zoo tagnrho rau cov kev siv uas yuav tsum tau ib tug ntau dua siab-nqa peev xwm, xws li chav tsev, tshuaj reactors, thiab petrochemical nroj tsuag. |
|
Siab siab |
Chav Kawm 1500 Chav Kawm 2500 |
High-pressure flanges yog siv rau cov kav raj xa dej uas txhawb nqa siab heev. Lawv feem ntau yog siv nyob rau hauv ultra-high pressure gas, kua pipelines, tshwj xeeb kev lag luam chaw, thiab kub thiab kub siab. |
PN vs ANSI Class Comparison Table
|
American System |
European System |
|
Chav Kawm 150 |
NP 20 |
|
Chav Kawm 300 |
NP 50 |
|
Chav Kawm 400 |
PAB 63 |
|
Chav Kawm 600 |
PIB 110 |
|
Chav Kawm 900 |
PIB 150 |
|
Chav Kawm 1500 |
PAB 260 |
|
Chav Kawm 2500 |
PAB 420 |
Kev xaiv ntawm flange siab ntsuas
Thaum xaiv qhov tsim nyog PN ntsuas, cov hauv qab no yuav tsum tau xav txog:
Ua haujlwm siab:Qhov siab tshaj plaws ntawm flange yuav tsum siab dua los yog sib npaug rau qhov siab tshaj plaws ua haujlwm ntawm lub cev.
Ua haujlwm kub:Qhov cuam tshuam ntawm qhov kub thiab txias hloov ntawm flange siab ntsuas yuav tsum tau muab rau hauv tus account.
Hom nruab nrab:Tej yam xws li corrosiveness thiab fluidity ntawm nruab nrab kuj yuav cuam tshuam rau kev xaiv ntawm flanges.
Daim ntawv thov scenarios:Xaiv cov kev ntsuas PN uas tsim nyog thiab cov ntaub ntawv raws li kev lag luam sib txawv (xws li tshuaj lom neeg, petrochemical, lub zog, thiab lwm yam).
Cov lus nug nquag
Kev hloov pauv ntawm Bar, MPa, N / mm2, psi
+
-
1 bar =0.1 MPa=0.1 N/mm2=14.5038 psi (lb/in2)
Cov khoom siv flange
+
-
Stainless hlau, CS, AS, tooj liab nickel, titanium, txhuas, tooj dag
Yuav ua li cas los txiav txim siab qhov ntsuas ntawm flange?
+
-
Kev ntsuas siab ntawm flange feem ntau yog txiav txim siab los ntawm nws cov qauv tsim, khoom siv, qhov loj me, thiab cov kev xav tau. Nws yog xam raws li lub flange lub siab tshaj plaws-cov kabmob muaj peev xwm thiab yog ncaj qha ntsig txog yam xws li lub siab-cov kabmob nto, phab ntsa thickness, khoom, thiab kub.
Dab tsi cov ntaub ntawv thiab siab flanges yog tsim nyog rau high-temperature, high-pressure ib puag ncig?
+
-
High-temperature resistant thiab high-strength alloy steel los yog stainless hlau flanges raug pom zoo rau kev siv nyob rau hauv high-temperature thiab high-pressure xwm txheej, tshwj xeeb tshaj yog alloy steels xws li F11, F22, thiab F91, raws li zoo raws li high-temperature alloys xws li Inconel. thiab Incoloy.
