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

Ukuguqulwa kwe-PSI kanye ne-MPA, i-PSI iyunithi yokucindezela, echazwa ngokuthi iphawundi yaseBrithani/intshi yesikwele, 145PSI = 1MPa, futhi i-PSI IsiNgisi ibizwa ngokuthi Amaphawundi ngesikwele ngasinye.Ungakwazi ukubala wonke amayunithi ngamayunithi omphakathi:1bha≈14.5PSI, 1PSI = 6.895kpa = 0.06895barI-Europe kanye ne-United States namanye amazwe asetshenziselwa ukusebenzisa i-PSI njengeyunithi.

E-China, ngokuvamile sichaza ukucindezela kwegesi ku-"kg" (esikhundleni sokuthi "pound").Iyunithi yomzimba ithi “KG/CM^2″, futhi ukucindezela kwekhilogremu eyodwa kungamandla ekhilogremu kusentimitha lesikwele esisodwa.

Amayunithi asetshenziswa kakhulu phesheya athi “PSI”, kanti iyunithi ethize ithi “LB/In2″, okungukuthi “iphawundi/intshi yesikwele”.Le yunithi ifana nelebula lokushisa (F).

Ngaphezu kwalokho, kukhona i-PA (i-Pascal, i-Newton eyodwa ikwimitha yesikwele esisodwa), i-KPA, i-MPA, i-BAR, ikholomu yamanzi eyimilimitha, i-millimeter mercury namanye amayunithi okucindezela.

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

1 Umfutho womoya ojwayelekile (ATM) = 0.101325 MPa (MPA) = Ibha engu-1.0333 (BAR)

Ngenxa yokuthi umehluko weyunithi mncane kakhulu, ungakhumbula lokhu:

Ibha engu-1 (BAR) = 1 Umfutho womoya ojwayelekile (ATM) = 1 kg/square centimeter = 100 kilo (KPA) = 0.1 MPa (MPA)

Ukuguqulwa kwe-PSI imi kanje:

1 Umfutho womoya ojwayelekile (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)

1 mm ikholomu yamanzi (mmh2O) = 9.80665 Pa (PA)

1 Ingcindezi ye-atmospheric yobunjiniyela = 98.0665 kite (KPA)

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

1 iphawundi amandla/intshi 2 (PSI) = 6.895 kenta (KPA) = 0.0703 kg/cm 2 (kg/cm2) = 0.0689 Ibha (ibha) = 0.068 ingcindezi yomoya (ATM)

1 Ukucindezela komkhathi (ATM) = 101.325 Kenpa (KPA) = 14.696 amaphawundi/intshi 2 (PSI) = 1.0333 Ibha (BAR)

Kunezinhlobo ezimbili zeama-valve: enye uhlelo "lokucindezela okulinganiselwe" olumelwe iJalimane (kuhlanganise nezwe lami) ekushiseni okujwayelekile (e-China yi-100 degrees kanti iJalimane yi-120 degrees).Enye "isistimu yengcindezi yezinga lokushisa" emelwe i-US emelwe ezingeni lokushisa elithile ezingeni lokushisa elithile.

Phakathi kwesistimu yokushisa nengcindezi e-United States, ngaphandle kuka-150LB ngokusekelwe kumadigri angu-260, amanye amazinga kuwo wonke amazinga asekelwe kuma-degree angu-454.

I-250 -pound (150PSI = 1MPa) No. 25 carbon steel valve yayingu-260 degrees, futhi ukucindezeleka okuvunyelwe kwakuyi-1MPa, futhi ingcindezi yokusebenzisa ekamelweni lokushisa yayinkulu kakhulu kune-1MPa, cishe i-2.0MPa.

Ngakho-ke, ngokuvamile, izinga lokucindezela okulinganiselwe elihambisana nezinga le-US elingu-150LB lingu-2.0MPa, futhi izinga lokucindezela okulinganiselwe elihambisana no-300LB ngu-5.0MPa njalonjalo.

Ngakho-ke, awukwazi ukushintsha ukucindezela okujwayelekile kanye nezinga lokushisa ngokusho kwefomula yokuguqulwa kwengcindezi.