Momwe mungasinthire Valve Pressure PSI, BAR ndi MPA?

Kutembenuka kwa PSI ndi MPA, PSI ndi unit pressure unit, yomwe imatanthauzidwa kuti British pound/square inch, 145PSI = 1MPa, ndipo PSI English imatchedwa Pounds per square in. P ndi Pound, S ndi Square, ndipo ine ndi Inchi.Mutha kuwerengera mayunitsi onse ndi mayunitsi aboma:1bar≈14.5PSI, 1PSI = 6.895kpa = 0.06895barEurope ndi United States ndi mayiko ena amagwiritsidwa ntchito kugwiritsa ntchito PSI ngati gawo.

Ku China, nthawi zambiri timafotokoza kupanikizika kwa gasi mu "kg" (m'malo mwa "pound").Chigawo cha thupi ndi “KG/CM^2″, ndipo kukakamiza kwa kilogalamu imodzi ndi mphamvu ya kilogalamu imodzi pa sikweya sentimita imodzi.

Mayunitsi omwe amagwiritsidwa ntchito kwambiri kunja ndi "PSI", ndipo gawo lenileni ndi "LB/In2", lomwe ndi "pound/square inch".Chigawochi chili ngati chizindikiro cha kutentha (F).

Komanso, pali PA (Pascal, Newton mmodzi ali pa lalikulu mita), KPA, MPA, BAR, millimeter madzi ndime, millimeter mercury ndi mayunitsi kuthamanga ena.

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

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

Chifukwa kusiyana kwa mayunitsi ndikochepa kwambiri, mutha kukumbukira izi:

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

Kusintha kwa PSI kuli motere:

1 Standard atmospheric pressure (ATM) = 14.696 pound/inch 2 (PSI)

Ubale wotembenuka mtima:

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)

Mzere wa madzi 1 mm (mmh2O) = 9.80665 Pa (PA)

1 Engineering atmospheric pressure = 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/cm 2 (kg/cm2) = 0.0689 Bar (bar) = 0.068 atmospheric pressure (ATM)

1 Physical atmospheric pressure (ATM) = 101.325 Kenpa (KPA) = 14.696 pounds/inch 2 (PSI) = 1.0333 Bar (BAR)

Pali mitundu iwiri yamavavu: imodzi ndi dongosolo la "kukakamiza mwadzina" loyimiridwa ndi Germany (kuphatikizapo dziko langa) pa kutentha kwabwino (ku China ndi madigiri 100 ndi Germany ndi madigiri 120).Chimodzi ndi "kutentha kwa kutentha" komwe kumayimiridwa ndi US kuimiridwa ndi kutentha kwina pa kutentha kwina.

Pakati pa kutentha ndi kupanikizika ku United States, kupatulapo 150LB yochokera ku madigiri a 260, magawo ena pamagulu onse amachokera ku madigiri a 454.

The 250 -pounds (150PSI = 1MPa) No. 25 carbon steel valve inali madigiri 260, ndipo kupanikizika kovomerezeka kunali 1MPa, ndipo kupanikizika kogwiritsa ntchito kutentha kwa chipinda kunali kwakukulu kwambiri kuposa 1MPa, pafupifupi 2.0MPa.

Chifukwa chake, nthawi zambiri, mulingo wocheperako womwe umagwirizana ndi muyezo wa US 150LB ndi 2.0MPa, ndipo mulingo wocheperako womwe umagwirizana ndi 300LB ndi 5.0MPa ndi zina zotero.

Chifukwa chake, simungasinthe kuchuluka kwa kuthamanga kwadzina ndi kutentha molingana ndi njira yosinthira kuthamanga.