Piav Qhia Txog PSI thiab PSIG: Cov Chav Siab, Qhov Sib Txawv, thiab Kev Hloov Pauv
PSI yog dab tsi?
PSI (Pounds per Square Inch) ntsuas qhov siab los ntawm kev xam lub zog (phaus) siv rau ib square inch ntawm thaj chaw. Feem ntau siv rau hauv cov tshuab hydraulic, lub log tsheb siab, thiab cov khoom siv hauv kev lag luam, nws yog lub tshuab ntsuas siab txheem.
Lus Cim: PSI kuj tseem yuav hais txog kev nyiaj txiag (Kev Muab Nyiaj Npib Pib) lossis tshuaj (Kev Sau Npe Khoom Siv Tom Qab Yug Me Nyuam), tab sis phau ntawv qhia no tsom mus rau cov ntsiab lus engineering.
PSI ua ib chav ntsuas siab
Kev Txhais Lus
PSI ntsuas qhov siab thaum 1 lb ntawm lub zog ua rau ntawm 1 in² nto. Nws yog qhov tseem ceeb hauv Tebchaws Meskas/UK rau cov ntawv thov engineering.
Kev Hloov Pauv Tseem Ceeb
| PSI | kPa | lub bar | MPa |
|---|---|---|---|
| 1 PSI | 6.895 | 0.0689 | 0.00689 |
| 1 atm | 101.3 | 1.013 | 0.1013 |
| Cov sib npaug | 1 atm ≈ 14.696 PSI | 1 MPa ≈ 145 PSI |
Piv txwv txog lub ntiaj teb tiag
-Ib 1000 WOGLub Pob ValveTxhais tau tias 1000 PSI lub pob valve = 68.95 bar lossis 6.895 MPa
-Ib2000 WOG Pob ValveTxhais tau tias lub pob valve 2000 PSI = 137.9 bar lossis 13.79 MPa
PSIG yog dab tsi?
PSIG Txhais
PSIG (Pounds per Square Inch Gauge) ntsuas qhov ntsuas siab - siabpiv rau qhov siab ntawm huab cuaNws yog tus nqi uas tso tawm rau ntawm feem ntau cov ntsuas siab.
PSI vs PSIG: Qhov Sib Txawv Tseem Ceeb
| Lub Sijhawm | Hom | Chaw Siv | Cov mis |
|---|---|---|---|
| PSI | Nyob ntawm seb muaj xwm txheej dab tsi | Txawv (feem ntau = PSIG) | Chav dav dav |
| PSIG | Ntsuas qhov siab | Lub zog cua hauv zos | PSIG = PSIA – 14.7 |
| PSIA | Qhov siab kawg | Lub tshuab nqus tsev kiag li | PSIA = PSIG + 14.7 |
Piv txwv ua tau
Lub log tsheb uas muaj daim ntawv lo "35 PSI" = 35 PSIG (gauge pressure).
Ib qho chaw nqus tsev nyob rau ntawm theem dej hiav txwv nyeem -14.7 PSIG (PSIA = 0).
PSI vs PSIG: Cov Ntawv Thov Tseem Ceeb
Cov Ntaub Ntawv Siv Hauv Kev Lag Luam
PSIG:Siv rau hauv cov ntsuas siab, cov compressors, thiab cov tshuab hydraulic (piv txwv li, ntsuas lub log tsheb siab lossis lub raj xa dej siab).
PSIA:Tseem ceeb heev rau hauv cov tshuab aerospace / vacuum uas qhov kev nyuaj siab tseem ceeb.
Cov Lus Qhia Txog Kev Siv Tshuab
Cov ntaub ntawv feem ntau luv PSIG ua "PSI,"tab sis cov ntsiab lus nruj yuav tsum muaj qhov sib txawv (piv txwv li, cov lus qhia dav hlau teev "18 PSI" tab sis txhais tau tias 18 PSIG).
Txoj cai yooj yim:Feem ntau cov kev nyeem ntawv "PSI" hauv kev lag luam yog PSIG.
Cov Lus Qhia Txog Kev Hloov PSI Uas Muaj Peev Xwm Tag Nrho
Kev Hloov Pauv Chav Siab
| Chav tsev | PSI | lub bar | MPa |
|---|---|---|---|
| 1 PSI | 1 | 0.0689 | 0.00689 |
| 1 lub bar | 14.5 | 1 | 0.1 |
| 1 MPa | 145 | 10 | 1 |
Lwm Cov Kev Hloov Pauv Tseem Ceeb
1 PSI = 0.0703 kg/cm²
1 kg/cm² = 14.21 PSI
1 atm = 14.696 PSI = 101.3 kPa = 760 mmHg
Cov Lus Nug Feem Ntau: PSI thiab PSIG
Q: PSI puas zoo ib yam li PSIG?
A: Hauv kev xyaum, "PSI" feem ntau txhais tau tias PSIG (gauge pressure). Technically, PSI tsis meej, thaum PSIGmeej meejsiv cov lus qhia txog qhov siab ntawm huab cua.
Q: Vim li cas cov li qub siv cov ntsuas PSI?
A: PSI qhia txog qhov siab tshaj plaws uas kam rau siab (*piv txwv li, 1000 PSI valve = 68.95 bar*).
Q: Kuv yuav tsum siv PSIA piv rau PSIG thaum twg?
A: Siv PSIG rau kev nyeem cov khoom siv siab; PSIA rau cov tshuab nqus tsev lossis kev suav lej science.
Cov Ntsiab Lus Tseem Ceeb
1. PSI = lub zog ib square inch; PSIG = PSI piv rau lub zog siab ntawm huab cua.
2. Feem ntau cov nqi "PSI" hauv kev lag luam yog PSIG (piv txwv li, lub log tsheb siab, qhov ntsuas valve).
3. Kev hloov pauv tseem ceeb: 1 PSI = 0.0689 bar, 1 MPa = 145 PSI.
Lub sijhawm tshaj tawm: Lub Rau Hli-24-2025