Ukucindezela inani lamandla asetshenziswa ngokuqondile ebusweni bento, ngendawo ngayinye. Okusho ukuthi,P = F/A, okusobala ukuthi indawo encane yokucindezeleka noma amandla aqinile aqinisa ingcindezi esetshenziswayo. Uketshezi/Uketshezi kanye negesi nakho kungasebenzisa ingcindezi kanye nobuso obuqinile.
Ingcindezi ye-hydrostatic ikhishwa uketshezi ekulinganeni endaweni ethile ngenxa yamandla adonsela phansi. Inani lokucindezela kwe-hydraulic alibalulekile ngobukhulu bendawo yokuxhumana kodwa ekujuleni koketshezi okungavezwa yi-equation.P = ρghKuyindlela evamile yokusebenzisa isimiso sokuthiingcindezi ye-hydrostaticukukala izinga loketshezi. Uma nje ubuningi boketshezi esitsheni esivaliwe baziwa, inzwa engaphansi kwamanzi inganikeza ukuphakama kwekholomu yoketshezi ngokusekelwe ekufundweni kwengcindezi okubonwe.
Isisindo somoya emkhathini womhlaba wethu sikhulu futhi sicindezela kancane kancane ebusweni bomhlaba. Kungenxa yokuba khona kwengcindezi yomoya ukuthi ekulinganisweni kwenqubo ingcindezi ihlukaniswe ngezinhlobo ezahlukene.
Amayunithi okucindezela ahlukene ngokusekelwe emithonjeni ehlukene yokucindezela kanye namayunithi enobuningi obufanele obuphathekayo:
I-Pascal - Iyunithi ye-SI yokucindezela, emele i-newton/㎡, lapho i-newton iyiyunithi yamandla ye-SI. Inani le-Pa eyodwa lincane kakhulu, kangangokuthi empeleni i-kPa ne-MPa zivame ukusetshenziswa.
I-Atm - Inani lokucindezela okujwayelekile komkhathi, lilingana no-101.325kPa. Ukucindezela kwangempela komkhathi wendawo kuyashintshashintsha cishe ngo-1atm kuye ngokuphakama kanye nezimo zezulu.
Ibha - Iyunithi ye-metric yokucindezela. Ibha eli-1 lilingana no-0.1MPa, elingaphansi kancane kwe-atm. 1mabr = 0.1kPa. Kulula ukuguqula iyunithi phakathi kwePascal nebha.
I-Psi - Amaphawundi nge-intshi yesikwele, iyunithi yokucindezela ye-avoirdupois esetshenziswa kakhulu yi-USA. 1psi = 6.895kPa.
Amasentimitha amanzi - Kuchazwa njengokucindezela okwenziwa phansi kwekholomu yamanzi ephakeme engu-1 intshi. 1inH2O = 249Pa.
Amamitha amanzi - mH2I-O iyunithi evamile yeumthumeli wezinga lamanzi wohlobo lokucwiliswa.
Amayunithi Okucindezela Ahlukahlukene Abonisiwe (kPa/MPa/bar)
Izinhlobo Zokucindezela
☆Ingcindezi yegeyiji: Uhlobo oluvame kakhulu lokulinganisa ingcindezi yenqubo ngokusekelwe ekucindezelweni kwangempela komkhathi. Uma kungekho ngcindezi eyengeziwe ngaphandle kwenani lomoya elizungezile, ingcindezi yegeyiji ingu-zero. Iba yingcindezi engemihle uma uphawu lokufunda luyi-minus, inani layo eliphelele lingeke lidlule ingcindezi yomkhathi yendawo ezungeze i-101kPa.
☆Ukucindezela okuvaliwe: Ukucindezela okuvaleleke ngaphakathi kwe-diaphragm yesensa esebenzisa ukucindezela okujwayelekile komkhathi njengendawo yokubhekisela eyisisekelo. Kungaba futhi okuhle noma okubi, okubizwa ngokuthi ukucindezela ngokweqile kanye ne-vacuum engaphelele ngokulandelana.
☆Ukucindezela okuphelele: Ukucindezela okusekelwe ku-vacuum ephelele lapho konke kungenalutho nhlobo, okungase kungatholakali ngokuphelele ngaphansi kwanoma yiziphi izimo ezivamile eMhlabeni kodwa kungaba seduze kakhulu. Ukucindezela okuphelele kungaba yi-zero (vacuum) noma okuhle futhi akusoze kwaba kubi.
☆Umehluko wokucindezela: Umehluko phakathi kokucindezela kwamachweba okulinganisa. Umehluko uhle kakhulu ngoba amachweba okucindezela aphezulu naphansi ngokuvamile anqunywa kusengaphambili ngokuhambisana nomklamo wesistimu yenqubo. Ukucindezela okuhlukile kungasetshenziswa ekulinganisweni kwezinga lamabhodlela avaliwe futhi njengosizo kwezinye izinhlobo zamamitha okugeleza.
IShanghaiWangYuan, uchwepheshe wokulawula izinqubo iminyaka engaphezu kwengu-20 ukhiqiza amathuluzi okulinganisa ingcindezi amukela zonke izinhlobo zezidingo ezenziwe ngokwezifiso kumayunithi nezinhlobo zengcindezi. Yonke imikhiqizo ilinganiswa ngokuphelele futhi ihlolwe ngaphambi kokushiya ifektri. Amamodeli anesibonakaliso esihlanganisiwe angalungisa iyunithi eboniswayo ngesandla. Sicela uzizwe ukhululekile ukuxhumana nathi ngezidingo zakho nemibuzo.
Isikhathi sokuthunyelwe: Juni-11-2024