Ulwazi lohlelo lokusebenza lwezimpawu ezinyakazayo eziphindaphindayo
Izigxivizo ezinyakazayo ezihambisanayo zingenye yezidingo ezivame kakhulu zokuvala ekujikelezweni kwe-hydraulic kanye nezingxenye zomoya kanye nezinhlelo.Izigxivizo ezinyakazayo eziphindaphindayo zisetshenziswa kuma-cylinder pistons namandla nemizimba yamasilinda, amakhanda e-piston intervention cylinder kanye nazo zonke izinhlobo zama-valve amaslayidi.Igebe lakhiwa induku eyi-cylindrical ene-cylindrical bore lapho induku ihamba khona nge-axially.Isenzo sokuvala sikhawulela ukuvuza kwe-axial koketshezi.Uma isetshenziswa njengophawu oluhambisanayo olunyakazayo, i-O-ring inomphumela ofanayo wokuvala ngaphambilini kanye nomthelela wokuzivala njengophawu olumile, futhi inekhono lokunxephezela ngokuzenzakalelayo ukuguga ngenxa yokunwebeka kwe-O-ring ngokwayo.Kodwa-ke, lesi simo siyinkimbinkimbi kunokubekwa uphawu okumile ngenxa yejubane lokunyakaza kwenduku, ingcindezi kanye ne-viscosity yoketshezi lapho kuvalwa.
Lapho uketshezi lungaphansi kwengcindezi, ama-athomu awuketshezi ahlangana nendawo yensimbi futhi “ama-molecule e-polar” aqukethwe oketshezini ahlelwa eduze futhi ngobunono endaweni yensimbi, enze ungqimba oluqinile lomngcele wefilimu kawoyela endaweni eshelelayo naphakathi izimpawu, futhi ikhiqize ukunamathela okukhulu endaweni eshelelayo.Ifilimu ye-liquid ihlale ikhona phakathi kwe-seal kanye ne-reciprocating surface, iphinde isebenze njengophawu futhi ibaluleke kakhulu ekugcotshweni kwendawo yokuvala ehambayo.
Nokho, kuyingozi mayelana nokuvuza.Kodwa-ke, lapho i-shaft ephindaphindiwe idonselwa ngaphandle, ifilimu ye-liquid ku-shaft ikhishwa kanye ne-shaft futhi, ngenxa yomphumela "wokusula" we-seal, lapho i-shaft ephindaphindiwe ihoxiswa, ifilimu ye-liquid igcinwa ngaphandle. isici sokuvala.Njengoba inani lemivimbo ephindaphindayo likhula, kusala uketshezi oluningi ngaphandle, ekugcineni kwakheka amaconsi kawoyela, okuwukuvuza kophawu oluphindaphindayo.
Njengoba i-viscosity yamafutha we-hydraulic iyancipha ngokukhuphuka kwezinga lokushisa, ubukhulu befilimu buyancipha ngokufanele, ngakho-ke lapho imishini ye-hydraulic iqalwa emazingeni okushisa aphansi, ukuvuza kukhulu ekuqaleni kokunyakaza, futhi njengoba izinga lokushisa likhuphuka ngenxa yokulahlekelwa okuhlukahlukene. ngesikhathi sokunyakaza, ukuvuza kuvame ukuncipha kancane kancane.
Ama-seal aphindaphindayo asetshenziswa kakhulu ku.
1) ezingxenyeni ezinomfutho ophansi we-hydraulic, ngokuvamile zikhawulelwe kuma-stroke amafushane kanye nezingcindezi eziphakathi nendawo ezingaba ngu-10MPa.
2) Ngobubanzi obuncane, unhlangothi olufushane kanye nama-valve ama-slide e-hydraulic pressure.
3) Kuma-valve wesilayidi womoya kanye namasilinda womoya.
4) Njenge-elastomer ekuhlanganisweni kwezimpawu eziphindaphindayo.
Isikhathi sokuthumela: Mar-13-2023
