Maitiro ekushandura Valve Pressure PSI, BAR uye MPA?

Kushandurwa kwePSI neMPA, PSI iyuniti yekumanikidza, inotsanangurwa seBritish pound/square inch, 145PSI = 1MPa, uye PSI English inonzi Pounds per square in. P iPound, S iSquare, uye i iInch. Unogona kuverenga mayuniti ese ane mayuniti eruzhinji:1bha≈14.5PSI, 1PSI = 6.895kpa = 0.06895bhaEurope neUnited States nedzimwe nyika dzakajaira kushandisa PSI sechikamu chimwe chete.

MuChina, tinowanzo tsanangura kumanikidzwa kwegasi mu "kg" (panzvimbo pe "pound"). Chiyero chemuviri i "KG/CM^2″, uye kumanikidzwa kwekirogiramu imwe isimba rekirogiramu imwe pane imwe sikweya sendimita.

Zviyero zvinowanzoshandiswa kunze kwenyika ndi "PSI", uye chiyero chaicho ndi "LB/In2″, chinova "pound/square inch". Chiyero ichi chakafanana nechiratidzo chekupisa (F).

Pamusoro pezvo, kune PA (Pascal, Newton imwe iri pa square meter imwe), KPA, MPA, BAR, millimeter water column, millimeter mercury nedzimwe pressure units.

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

1 Kumanikidzwa kwemhepo kwakajairika (ATM) = 0.101325 MPa (MPA) = 1.0333 Bhawa (BAR)

Nekuti musiyano weyuniti mudiki kwazvo, unogona kurangarira izvi:

1 Bhawa (BAR) = 1 Kumanikidzwa kwemhepo kwakajairika (ATM) = 1 kg/sendimita yemativi mana = 100 kilo (KPA) = 0.1 MPa (MPA)

Kushandurwa kwePSI ndekwekuti:

1 Kumanikidzwa kwemhepo kwakajairika (ATM) = 14.696 pound/inch 2 (PSI)

Hukama hwekushandura kumanikidzwa:

Pressure 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)

Koramu yemvura ye1 mm (mmh2O) = 9.80665 Pa (PA)

1 Kumanikidzwa kwemhepo yeinjiniya = 98.0665 kite (KPA)

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

Simba repaundi imwe/inch 2 (PSI) = 6.895 kenta (KPA) = 0.0703 kg/cm 2 (kg/cm2) = 0.0689 Bhawa (bhawa) = 0.068 kumanikidzwa kwemhepo (ATM)

1 Kumanikidzwa kwemhepo yemuviri (ATM) = 101.325 Kenpa (KPA) = 14.696 mapaundi/inch 2 (PSI) = 1.0333 Bhawa (BAR)

Kune mhando mbiri dzemavharuvhu: imwe ndiyo "nominal pressure" system inomiririrwa neGermany (kusanganisira nyika yangu) patembiricha yakajairika (muChina ine madhigirii zana uye Germany ine madhigirii zana nemakumi maviri). Imwe ndiyo "tembiricha yepressure system" inomiririrwa neUS inomiririrwa patembiricha yakati patembiricha yakati.

Pakati pemamiriro ekupisa nekumanikidzwa muUnited States, kunze kwe150LB zvichibva pa260 degrees, mamwe mazinga pamatanho ese akavakirwa pa454 degrees.

Vharuvhu yesimbi yekabhoni ye250 pound (150PSI = 1MPa) Nhamba 25 yaive madhigirii 260, uye kumanikidzwa kwaibvumidzwa kwaive 1MPa, uye kumanikidzwa kwekushandiswa patembiricha yemukamuri kwaive kwakakura kupfuura 1MPa, inenge 2.0MPa.

Saka, kazhinji, mwero wekumanikidzwa unoenderana neUS standard 150LB i2.0MPa, uye mwero wekumanikidzwa unoenderana ne300LB i5.0MPa nezvimwewo.

Saka, haugone kuchinja kumanikidzwa kwakajairika uye mwero wekupisa zvichienderana nefomula yekushandura kumanikidzwa.