Ukuguqulwa kwe-Psi ukuya ku-MPa, i-psi iyunithi yokucindezela, echazwa ngokuthi amaphawundi kuyintshi yesikwele, 145psi=1MPa, i-PSI ibizwa ngokuthi iPound sper inch ngesiNgisi.U-P uyiphawundi, u-S uyisikwele, mina ngiyintshi.Ukuguqula wonke amayunithi abe amayunithi wemethrikhi kuyathela:
Ibha engu-1≈14.5psi;1psi=6.895kPa=0.06895bar
Amazwe anjenge-Europe kanye ne-United States ajwayele ukusebenzisa i-psi njengeyunithi
E-China, ngokuvamile sichaza ingcindezi yegesi ku-“kg” (kunokuthi “jin”), futhi iyunithi yomzimba ithi “kg/cm^2″.Ikhilogremu eyodwa yokucindezela isho ukuthi ikhilogremu eyodwa yamandla isebenza ngesentimitha eyodwa yesikwele.
Iyunithi evame ukusetshenziswa phesheya ithi “Psi”, futhi iyunithi ethile ithi “lb/in2″, okusho “phawundi ngeyintshi yesikwele”.Le yunithi ifana nezinga lokushisa lika-Fahrenheit (F).
Ngaphezu kwalokho, kukhona Pa (Pascal, omunye Newton izenzo imitha skwele), KPa, Mpa, Bar, ikholomu millimeter amanzi, millimeter mercury ikholomu kanye nezinye ingcindezi units.
Ibha engu-1 (ibha) = 0.1 MPa (MPa) = 100 kilopascal (KPa) = 1.0197 kg/cm²
1 umfutho womoya ojwayelekile (ATM) = 0.101325 MPa (MPa) = 1.0333 ibha (ibha)
Ngenxa yokuthi umehluko wamayunithi mncane kakhulu, ungawubhala kanje:
Ibha engu-1 (ibha) = 1 umfutho womoya ojwayelekile (ATM) = 1 kg/cm2 = 100 kilopascals (KPa) = 0.1 megapascals (MPa)
Ukuguqulwa kwe-psi imi kanje:
1 umfutho womkhathi ojwayelekile (atm) = 14.696 amakhilogremu iyintshi engu-2 (psi)
Ubudlelwano bokuguqulwa kwengcindezi:
Ibha yokucindezela engu-1 (ibha) = 10^5 Pa (Pa) 1 dyne/cm2 (dyn/cm2) = 0.1 Pa (Pa)
1 Torr (Torr) = 133.322 Pa (Pa) 1 millimeter ye-mercury (mmHg) = 133.322 Pa (Pa)
1 mm ikholomu yamanzi (mmH2O) = 9.80665 Pa (Pa)
1 ubunjiniyela bengcindezi ye-atmospheric = 98.0665 kilopascals (kPa)
1 kilopascal (kPa) = 0.145 lbf/in2 (psi) = 0.0102 kgf/cm2 (kgf/cm2) = 0.0098 ingcindezi yomoya (atm)
1 iphawundi amandla/intshi 2 (psi) = 6.895 kilopascal (kPa) = 0.0703 kilogram force / isentimitha 2 (kg/cm2) = 0.0689 ibha (ibha) = 0.068 ingcindezi yomoya (atm)
1 umfutho womoya womkhathi (atm) = 101.325 kilopascals (kPa) = 14.696 amaphawundi ayintshi ngayinye 2 (psi) = 1.0333 ibha (ibha)
Kunezinhlobo ezimbili zezinhlelo zama-valve: enye iwuhlelo “lokucindezela okuzisholo” olumelwe iJalimane (kuhlanganise nezwe lami) ngokususelwe ekucindezelweni okuvumelekile okusebenzayo ekamelweni lokushisa (amadigri ayi-100 ezweni lakithi kanye namadigri ayi-120 eJalimane).Eyodwa “isistimu yezinga lokushisa nengcindezi” emelwe yi-United States futhi imelelwa ingcindezi yokusebenza evunyelwe ezingeni elithile lokushisa.
Kuhlelo lokushisa nokucindezela kwe-United States, ngaphandle kwe-150LB, esekelwe kuma-degree angu-260, wonke amanye amazinga asekelwe kuma-degree angu-454.
Ukucindezeleka okuvumelekile kwesigaba se-150-psi (150psi=1MPa) No. 25 carbon steel valve yi-1MPa ku-260 degrees, futhi ukucindezeleka okuvunyelwe ekamelweni lokushisa kukhulu kakhulu kuno-1MPa, mayelana ne-2.0MPa.
Ngakho-ke, uma sikhuluma nje, izinga lokucindezela okulinganiselwe elihambisana nezinga le-American 150LB lingu-2.0MPa, izinga lokucindezela okulinganiselwe elihambisana no-300LB ngu-5.0MPa, njalonjalo.
Ngakho-ke, ukucindezela okujwayelekile kanye namazinga okushisa kanye nokucindezela akukwazi ukuguqulwa ngokujwayelekile ngokuya ngefomula yokuguqula ingcindezi.
Ithebula lokuguqulwa kwengcindezi ye-Psi iye ku-MPa
Ukuguqulwa kwe-PSI-MPa
