Ungayiguqula kanjani i-Valve Pressure PSI, BAR kanye ne-MPA?

Ukuguqulwa kwe-PSI kanye ne-MPA, i-PSI iyiyunithi yokucindezela, echazwa njenge-British pound/square inch, 145PSI = 1MPa, kanti i-PSI English ibizwa ngokuthi ama-Pounds ngesikwele. I-P iyi-Pound, i-S iyi-Square, kanti i-i iyi-Inch. Ungabala wonke amayunithi ngamayunithi omphakathi:Ibha eli-1≈14.5PSI, i-1PSI = 6.895kpa = 0.06895bhaIYurophu ne-United States kanye namanye amazwe ajwayele ukusebenzisa i-PSI njengeyunithi.

EShayina, ngokuvamile sichaza ingcindezi yegesi ku-“kg” (esikhundleni se-“pound”). Iyunithi yomzimba ingu-“KG/CM^2″, kanti ingcindezi yekhilogremu eyodwa ingamandla ekhilogremu elilodwa kusentimitha elilodwa lesikwele.

Amayunithi avame ukusetshenziswa kwamanye amazwe yi-“PSI”, kanti iyunithi ethile yi-“LB/In2″, okuyi-“pound/square inch”. Le yunithi ifana nelebula lokushisa (F).

Ngaphezu kwalokho, kune-PA (i-Pascal, i-Newton eyodwa ikwimitha yesikwele eyodwa), i-KPA, i-MPA, i-BAR, ikholomu yamanzi ye-millimeter, i-millimeter mercury kanye nezinye izilinganiso zokucindezela.

Ibha engu-1 (BAR) = 0.1 MPa (MPA) = 100 Knaka (KPA) = 1.0197 kg/isentimitha yesikwele

1 Ingcindezi ejwayelekile yomoya (ATM) = 0.101325 MPa (MPA) = 1.0333 Ibha (BAR)

Ngenxa yokuthi umehluko weyunithi mncane kakhulu, ungakhumbula lokhu:

1 Ibha (I-BAR) = 1 Ingcindezi ejwayelekile yomoya (i-ATM) = 1 kg/isentimitha lesikwele = 100 kilo (KPA) = 0.1 MPa (MPA)

Ukuguqulwa kwe-PSI kungokulandelayo:

1 Umfutho womoya ojwayelekile (i-ATM) = 14.696 pound/inch 2 (PSI)

Ubudlelwano bokuguqulwa kwengcindezi:

Ibha yokucindezela engu-1 (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)

Ikholomu yamanzi engu-1 mm (mmh2O) = 9.80665 Pa (PA)

1 Ingcindezi yomoya yobunjiniyela = 98.0665 ikhayithi (KPA)

1 I-Knipa (KPA) = 0.145 amakhilogremu/intshi 2 (PSI) = 0.0102 kg/cm 2 (kgf/cm2) = 0.0098 ingcindezi yomoya (ATM)

Amandla ephawundi eli-1/intshi 2 (PSI) = 6.895 i-kenta (KPA) = 0.0703 kg/cm 2 (kg/cm2) = 0.0689 Ibha (ibha) = 0.068 ingcindezi yomoya (i-ATM)

1 Ingcindezi yomoya (ATM) = 101.325 I-Kenpa (KPA) = 14.696 amakhilogremu/intshi 2 (PSI) = 1.0333 Ibha (BAR)

Kunezinhlobo ezimbili ze-amavalvu: enye uhlelo “lokucindezela okujwayelekile” olumelelwa yiJalimane (kufaka phakathi izwe lakithi) ekushiseni okuvamile (eShayina kungama-degree ayi-100 kanti iJalimane ingama-degree ayi-120). Enye “uhlelo lokucindezela lokushisa” olumelelwa yi-US olumelelwe ekushiseni okuthile ekushiseni okuthile.

Phakathi kwesistimu yokushisa nokucindezela e-United States, ngaphandle kwe-150LB esekelwe kuma-degrees angu-260, amanye amazinga kuwo wonke amazinga asekelwe kuma-degrees angu-454.

Ivalvu yensimbi yekhabhoni engu-250-pound (150PSI = 1MPa) No. 25 yayingama-degrees angu-260, kanti ukucindezeleka okuvunyelwe kwakuyi-1MPa, kanti ukucindezeleka kokusetshenziswa ekushiseni kwegumbi kwakukhulu kakhulu kune-1MPa, cishe yi-2.0MPa.

Ngakho-ke, ngokuvamile, izinga lokucindezela elijwayelekile elihambisana ne-US standard 150LB lingu-2.0MPa, kanti izinga lokucindezela elijwayelekile elihambisana ne-300LB lingu-5.0MPa njalo njalo.

Ngakho-ke, awukwazi ukushintsha izinga lokucindezela kanye nezinga lokushisa ngokwefomula yokuguqulwa kwengcindezi.