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

PSI thiab MPA hloov dua siab tshiab, PSI yog chav ntsuas siab, txhais tau tias yog British phaus / square inch, 145PSI = 1MPa, thiab PSI Lus Askiv hu ua Pounds ib square in. P yog ib phaus, S yog Square, thiab kuv yog ib nti.Koj tuaj yeem suav tag nrho cov chav nrog pej xeem units: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, peb feem ntau piav qhia qhov siab ntawm cov roj hauv "kg" (tsis yog "phaus").Lub cev chav tsev yog "KG / CM ^ 2", thiab lub siab ntawm ib kilogram yog lub zog ntawm ib kilogram ntawm ib square centimeter.

Cov units uas nquag siv txawv teb chaws yog "PSI", thiab cov chav tshwj xeeb yog "LB / In2", uas yog "phaus / square inch".Chav tsev no zoo li qhov ntsuas kub (F).

Tsis tas li ntawd, muaj PA (Pascal, ib Newton yog nyob rau ib square meter), KPA, MPA, BAR, millimeter dej kem, millimeter mercury thiab lwm yam siab units.

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

1 Standard atmospheric siab (ATM) = 0.101325 MPa (MPA) = 1.0333 Bar (BAR)

Vim tias chav tsev sib txawv me me, koj tuaj yeem nco qab qhov no:

1 Bar (BAR) = 1 Standard atmospheric siab (ATM) = 1 kg/square centimeter = 100 kilo (KPA) = 0.1 MPa (MPA)

Kev hloov pauv ntawm PSI yog raws li hauv qab no:

1 Standard atmospheric siab (ATM) = 14.696 phaus/inch 2 (PSI)

Kev sib raug zoo ntawm kev sib hloov 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 mmHg (mmHg) = 133.322 Pa (PA)

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

1 Engineering atmospheric siab = 98.0665 kite (KPA)

1 Knipa (KPA) = 0.145 pounds/inch 2 (PSI) = 0.0102 kg/cm 2 (kgf/cm2) = 0.0098 atmospheric pressure (ATM)

1 pound force/inch 2 (PSI) = 6.895 kenta (KPA) = 0.0703 kg/cm2 (kg/cm2) = 0.0689 Bar (bar) = 0.068 atmospheric pressure (ATM)

1 Lub cev atmospheric siab (ATM) = 101.325 Kenpa (KPA) = 14.696 pounds/inch 2 (PSI) = 1.0333 Bar (BAR)

Muaj ob homli qub: ib qho yog "nominal siab" system sawv cev los ntawm lub teb chaws Yelemees (xws li kuv lub teb chaws) ntawm qhov kub thiab txias (hauv Suav teb yog 100 degrees thiab lub teb chaws Yelemees yog 120 degrees).Ib qho yog "kub kub siab system" sawv cev los ntawm Teb Chaws Asmeskas sawv cev ntawm qhov kub thiab txias ntawm qee qhov kub.

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

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

Yog li ntawd, nyob rau hauv dav dav, lub nominal siab theem sib haum mus rau lub US tus qauv 150LB yog 2.0MPa, thiab lub nominal siab theem sib xws rau 300LB yog 5.0MPa thiab hais txog.

Yog li ntawd, koj tsis tuaj yeem hloov lub nominal siab thiab kub theem raws li lub siab transformation mis.