Yuav ua li cas hloov Valve Pressure PSI, BAR thiab MPA?

Kev hloov pauv PSI thiab MPA, PSI yog chav ntsuas siab, txhais tias yog British phaus / square inch, 145PSI = 1MPa, thiab PSI lus Askiv hu ua Phaus ib square hauv. P yog Phaus, S yog Square, thiab i yog Inch. Koj tuaj yeem xam txhua chav nrog cov chav pej xeem:1bar ≈14.5PSI, 1PSI = 6.895kpa = 0.06895barTebchaws Europe thiab Tebchaws Meskas thiab lwm lub tebchaws tau siv los siv PSI ua ib chav.

Hauv Suav teb, feem ntau peb piav txog lub zog ntawm cov roj hauv "kg" (hloov chaw "pound"). Lub cev ntsuas yog "KG/CM^2", thiab lub zog ntawm ib kilogram yog lub zog ntawm ib kilogram rau ib square centimeter.

Cov chav ntsuas uas siv ntau hauv txawv teb chaws yog "PSI", thiab chav ntsuas tshwj xeeb yog "LB/In2", uas yog "pound/square inch". Chav ntsuas no zoo li daim ntawv lo kub (F).

Ntxiv rau, muaj PA (Pascal, ib Newton yog rau ib square meter), KPA, MPA, BAR, millimeter dej kem, millimeter mercury thiab lwm yam chav ntsuas siab.

1 Bar (BAR) = 0.1 MPa (MPA) = 100 Knaka (KPA) = 1.0197 kg/square centimeter

1 Lub zog ntsuas cua txheem (ATM) = 0.101325 MPa (MPA) = 1.0333 Bar (BAR)

Vim tias qhov sib txawv ntawm chav tsev me me heev, koj tuaj yeem nco ntsoov qhov no:

1 Bar (BAR) = 1 Lub zog ntsuas cua txheem (ATM) = 1 kg/square centimeter = 100 kilo (KPA) = 0.1 MPa (MPA)

Kev hloov pauv ntawm PSI yog raws li nram no:

1 Lub zog ntsuas huab cua txheem (ATM) = 14.696 phaus/nti 2 (PSI)

Kev sib raug zoo ntawm kev hloov pauv siab:

Siab 1 Bar (BAR) = 10^5 Pa (PA) 1 Dadin/cm 2 (dyn/cm2) = 0.1 Pa (PA)

1 Terr = 133.322 Pa (PA) 1 mm Hg (mmHg) = 133.322 Pa (PA)

1 hli dej kem (mmh2O) = 9.80665 Pa (PA)

1 Kev ntsuas cua tshuab = 98.0665 kite (KPA)

1 Knipa (KPA) = 0.145 phaus/nti 2 (PSI) = 0.0102 kg/cm2 (kgf/cm2) = 0.0098 atmospheric pressure (ATM)

1 phaus zog/nti 2 (PSI) = 6.895 kenta (KPA) = 0.0703 kg/cm2 (kg/cm2) = 0.0689 Bar (bar) = 0.068 atmospheric pressure (ATM)

1 Lub zog cua (ATM) = 101.325 Kpa (KPA) = 14.696 phaus/nti 2 (PSI) = 1.0333 Bar (BAR)

Muaj ob homcov li qub: ib qho yog lub kaw lus "nominal pressure" uas sawv cev los ntawm lub teb chaws Yelemees (suav nrog kuv lub teb chaws) ntawm qhov kub ib txwm (hauv Suav teb yog 100 degrees thiab lub teb chaws Yelemees yog 120 degrees). Ib qho yog "lub kaw lus kub siab" uas sawv cev los ntawm Tebchaws Meskas uas sawv cev ntawm qhov kub thiab txias ntawm qhov kub thiab txias.

Ntawm cov qhov kub thiab txias hauv Tebchaws Meskas, tshwj tsis yog 150LB raws li 260 degrees, lwm cov theem ntawm txhua qib yog raws li 454 degrees.

Lub 250 -phaus (150PSI = 1MPa) No. 25 carbon steel valve yog 260 degrees, thiab qhov kev ntxhov siab tso cai yog 1MPa, thiab kev ntxhov siab siv ntawm chav tsev kub yog loj dua 1MPa, txog 2.0MPa.

Yog li ntawd, feem ntau, qib siab nominal uas sib raug rau tus qauv US 150LB yog 2.0MPa, thiab qib siab nominal uas sib raug rau 300LB yog 5.0MPa thiab lwm yam.

Yog li ntawd, koj tsis tuaj yeem hloov qhov siab nominal thiab qib kub raws li cov qauv hloov pauv siab.