Kodi Class ndi Sch amatanthauza chiyani mu ASME Standard

Kalasi PN Kalasi PN
Gawo 150 PN20 Gawo 900 Chithunzi cha PN150
Gawo 300 PN50 Gawo la 1500 Chithunzi cha PN260
Gawo 600 Chithunzi cha PN110 Gawo la 2500 Chithunzi cha PN420

Tanthauzo la Class rating ya B16 series flange: Magawo a kalasi amatchulidwa molingana ndi kupanikizika kovomerezeka (8750PSI) kwa A105, WCB 1.1 gulu la zinthu pansi pa 454 ° C ndi kukakamizidwa kutengera 60.3MP:

  • P1=(10S/8750)*Pr≤Pc

P1 - kuthamanga kwa flange pa kutentha kofanana, bar.
S - mtengo wololeka wa zinthu za flange, MPa.
Pr - flange Class mtengo.

PC - pazipita kuthamanga mlingo Bar.

Pakuti flange wa zinthu 150 # ndi kupanikizika kololeka 100MPa, likupezeka (10 * 100/8750) * 150 = 17Bar = 1.7MPa.Ndizofanana ndi kupsinjika kovomerezeka kwa 150 # flange, komwe kukakamiza kwake kovomerezeka ndi 1.7%.

Zofunikira pakudziwitsa dera la Bolt la B16 mndandanda wa flange:
Kulumikizana kwa thupi la flange kapena valve:

  • AB *7000Psi≥Ag*Pc-> AB *120MPa≥Ag*Pg

Ab - gawo lalikulu la bawuti
Dera la Ag gasket kukhudzana mkati ndi kunja kwake (kuphatikiza malo okhala mkati mwa gasket wamkati).
PC - Kalasi kalasi ya flange
Kuchuluka kwa bawuti sikuyenera kukhala kocheperako poyerekeza kuti kukakamiza kwamkati kuli mkati mwa kunja kwa gawo losindikizira la gasket pomwe kupanikizika kovomerezeka kuli kofanana ndi 120MPa.Pa kulumikizana kwa flange, bolt ya a193b7 yokhala ndi mphamvu zokolola za 105ksi (724mpa) imagwiritsidwa ntchito nthawi zambiri, ndipo chitetezo cha kapangidwe ka bawuti ndi ns ≥ 6. Chifukwa chake, gawo la bolt la ASME B16.5 flange ndi lalikulu kuposa la ASME VIII I non -flange yokhazikika.Chifukwa cha kuchuluka kwa bawuti yochulukirapo, mphamvu ya flange nthawi zambiri imakhala yosayenerera ikawerengedwa molingana ndi chilinganizo.Koma kwenikweni, flange ndi otetezeka, n'chifukwa chake specifications amanena kuti flange osankhidwa malinga ndi muyezo flange B16.5 sangathe kuwerengedwa molingana chilinganizo.

Tanthauzo la Sch: Sch ndi chidule cha ndandanda umpers kukula kwa chitoliro.Zimatanthawuza kuti chiŵerengero cha kukakamiza kwa mapangidwe a mapaipi ndi kupanikizika kovomerezeka pa kutentha kwapangidwe kumachulukitsidwa ndi 100 0 ndi mtengo pambuyo pozungulira.Mwachitsanzo, ngati mphamvu ya mapangidwe ndi 1MPa ndipo mphamvu yovomerezeka ya chitoliro ndi 100Mpa, chitoliro chokhala ndi 1/100 100 0=10 ndi> Sch.10 chiyenera kugwiritsidwa ntchito.Kwa mapaipi ambiri, kupsinjika kovomerezeka kwazinthu zambiri kumakhala pafupifupi 100Mpa, Sch.80 imatha kupirira 8MPa,Sch.160 imatha kunyamula 16MPa, ndi zina zotero, pali zonena zambiri posankha Sch.


Nthawi yotumiza: Apr-09-2021