Uxinzelelo ngumthamo wamandla owenziwe ngokuxhomekeke kumphezulu wento, ngokweyunithi yendawo. Yiyo i,P = F/A, apho kucacile ukuba indawo encinci yoxinzelelo okanye amandla anamandla aqinisa uxinzelelo olusetyenzisiweyo. Ulwelo/Ulwelo kunye negesi nazo zinokufaka uxinzelelo kunye nomphezulu oqinileyo.
Uxinzelelo lwe-Hydrostatic lwenziwa ngolwelo olulinganayo kwindawo enikiweyo ngenxa yamandla omxhuzulane. Ubungakanani boxinzelelo lwehydraulic alubalulekanga kubungakanani bomphezulu wonxibelelwano kodwa kubunzulu bolwelo obunokubonakaliswa yinxaki.P = ρgh. Yindlela eqhelekileyo yokusebenzisa umgaqo weuxinzelelo lwe-hydrostaticukulinganisa inqanaba lolwelo. Logama nje ubuninzi bolwelo kwisikhongozeli esitywiniweyo busaziwa, isivamvo esingaphantsi kwamanzi sinokunika umphakamo wekholamu yolwelo ngokusekwe kuxinzelelo olujongweyo.
Ubunzima bomoya okwiatmosfera yeglowubhu yethu bukhulu kwaye bubeka uxinzelelo ngokuthe ngcembe kumphezulu womhlaba. Kungenxa yobukho boxinzelelo lwe-atmosphere ukuba kwinkqubo yokulinganisa uxinzelelo lwahlulwe kwiindidi ezahlukeneyo.
Iiyunithi zoxinzelelo ziyahluka ngokusekwe kwimithombo eyahlukeneyo yoxinzelelo kunye neeyunithi zobungakanani bomzimba obufanelekileyo:
I-Pascal - Iyunithi ye-SI yoxinzelelo, emele i-newton / ㎡, apho i-newton iyunithi ye-SI yamandla. Ubungakanani bePa enye buncinci, ngoko ke xa kusenziwa i-kPa kunye neMPa zisetyenziswa kakhulu.
I-Atm - Isixa soxinzelelo oluqhelekileyo lwe-atmosphere, lulingana ne-101.325kPa. Olona xinzelelo lwe-atmosfera yendawo luguquguquka malunga ne-1atm ngokuxhomekeke kumphakamo kunye neemeko zemozulu.
Ibha - iyunithi yeMetric yoxinzelelo. 1bar ilingana no 0.1MPa, nganeno kancinci kune atm. 1mabr = 0.1kPa. Kukulungele ukuguqula iyunithi phakathi kwePascal kunye nebar.
I-Psi - Iiponti nge-intshi nganye, iyunithi yoxinzelelo ye-avoirdupois isetyenziswa kakhulu yi-USA. 1psi = 6.895kPa.
I-intshi zamanzi - Ichazwa njengoxinzelelo olwenziwa phantsi kwekholomu yamanzi ephezulu ye-intshi ye-intshi. 1 ngeH2O = 249Pa.
Iimitha zamanzi - mH2O yiyunithi eqhelekileyo yeuhlobo lokuntywiliselwa isidluliseli somgangatho wamanzi.
IiYunithi zoxinzelelo eziBonisiweyo ezahlukeneyo ( kPa/MPa/bar)
Iintlobo zoxinzelelo
☆ Uxinzelelo lwegeyiji: Olona hlobo luqhelekileyo lokulinganisa uxinzelelo lwenkqubo olusekwe kuxinzelelo lokwenyani lomoya. Ukuba akukho xinzelelo longeziweyo ngaphandle kwexabiso le-atmospheric elijikelezileyo, uxinzelelo lwe-gauge ngu-zero. Iba luxinzelelo olubi xa uphawu lokufunda luthatyathwe, oluxabiso layo lilonke lingayi kuba ngaphezu koxinzelelo lwe-atmospheri yendawo malunga ne-101kPa.
☆ Uxinzelelo olutywiniweyo: Uxinzelelo oluvaleleke ngaphakathi kwe-sensor diaphragm esebenzisa uxinzelelo oluqhelekileyo lwe-atmosphere njengendawo yesalathiso esisiseko. Inokuba yinto entle okanye embi, i-aka overpressure kunye ne-partial vacuum ngokulandelanayo.
☆ Uxinzelelo olugqibeleleyo: Uxinzelelo olusekwe kwi-vacuum epheleleyo xa yonke into ingenanto, enokuthi ifikeleleke ngokupheleleyo phantsi kwazo naziphi na iimeko eziqhelekileyo eMhlabeni kodwa inokusondelelana kakhulu. Uxinzelelo olupheleleyo mhlawumbi ngu-zero (vacuum) okanye u-positive kwaye akanakuze abe negative.
☆ Umahluko woxinzelelo: Umahluko phakathi koxinzelelo lokulinganisa amazibuko. Umahluko ulungile kuba amazibuko aphezulu kunye noxinzelelo oluphantsi amiselwa kwangaphambili ngokungqinelana noyilo lwenkqubo yenkqubo. Uxinzelelo olwahlukileyo lunokusetyenziselwa umlinganiselo womgangatho wezikhongozeli ezitywiniweyo kunye noncedo kwiintlobo ezithile zeemitha zokuhamba.
eShanghaiWangYuan, ingcali yokulawula inkqubo kwiminyaka eyi-20 yenza izixhobo zokulinganisa uxinzelelo ezamkela zonke iintlobo zeemfuno ezilungiselelwe kwiiyunithi zoxinzelelo kunye neentlobo. Zonke iimveliso zilinganiswe ngokupheleleyo kwaye zihlolwe ngaphambi kokushiya umzi-mveliso. Iimodeli ezinesalathisi esidibeneyo zinokuhlengahlengisa iyunithi ebonisiweyo ngesandla. Nceda uzive ukhululekile ukuqhagamshelana nathi ngeemfuno zakho kunye nemibuzo.
Ixesha lokuposa: Jun-11-2024