Kungani ukubheka ama-valves kuvimbela ukubuyela emuva okuphakathi?

Njengendlela "yokuqapha edwa" ezinhlelweni zamapayipi,Bheka ama-valvesYiba nomsebenzi oyisisekelo wokuphoqelela ukuhamba kwendlela eyodwa yabezindaba futhi uqede ubungozi bokubuyela emuva. Lesi sici esivela ekuhlanganisweni okujulile komklamo wawo oqondile wemishini kanye nemigomo yomakhelwane.

Ngokombono wesakhiwo, ama-valves ahlolo ajwayele ukwakhiwa ama-valve disc, izihlalo ze-valve, kanye nezindlela zokuxhuma (njenge-hinges kanye nama-springs) ngaphakathi. Lapho i-liperium igeleza esiqondisweni esinqunyelwe kusengaphambili, ingcindezi kamanzi icindezela i-valve disc kude nesihlalo se-valve, yakha isiteshi esibushelelezi futhi ivumele indlela ephakathi nendawo; Lapho nje ukuqondiswa kokugeleza kokubuyiselwa kwemali okuphakathi, i-valve disc ye-valve ye-valve izonamathela ngokushesha esihlalweni se-valve futhi iqinise ngenxa yomphumela ohlanganisiwe wesisindo sayo, amandla entwasahlobo, noma ukubuyela emuva kwengcindezi, yakha indlela yokugeleza okuphezulu. Isibonelo, i-Rotary Check valve efakwe endaweni yokuphuma yepompo yamanzi ingavala ngokushesha i-valve disc lapho impompo iyekile, ukuvimbela umthelela wesando samanzi ekubumbeni emuva kokugeleza kwamanzi.

Imigomo kaFluid Mechanics iphinde ithuthukise ikhono lokubuyela emuva lokuhlola ama-valve. Lapho ugeleza phambili, ingcindezi enamandla ye-lipening igcina i-valve disc ivulekile, okuholela ekuphikisweni okuncane okuncane; Lapho ukugeleza okuguqukayo kwenzeka, ingcindezi ephezulu ye-valve disc yehla kakhulu, futhi ingcindezi ephansi yomfula idale umehluko wengcindezi ephezulu ye-valve disc, ecindezela i-valve disc ukulingana kahle nesihlalo se-valve, ukuzuza uphawu lwe- "zero ukuvuza". Le ndlela yokuphendula enamandla inika amandla ama-valves okuhlola ukuze ivumelane ngokushesha nokucindezela ukuguquguquka, ikakhulukazi ezindaweni ezinobungozi obukhulu njengezimboni zamakhemikhali nezegesi, ngokuphumelelayo engcupheni yokuxuba okuphakathi noma ukuqhuma.

Ukuthuthukiswa kwezinto zokwakha nezinqubo kuthuthukise kakhulu ukuthembeka kwama-valves okuhlola. I-Metal IvaliweBheka i-valvezenziwe ngezinto eziphikisayo ezilwa nokugqwala njengensimbi engenasici kanye ne-hastelloy, futhi zilungele amapayipi okushisa aphezulu kanye namaphilisi aphezulu we-highs. Ama-valves athambile athambile afinyelela uphawu lokubopha uphawu ngezinto ezifana ne-rubber ne-polytetrafluoroethlelene, ehlangabezana nezidingo zokuhlanzeka kwezimboni zemithi. Ngaphezu kwalokho, ukwakheka okusizwa kwentwasahlobo kwe-Check valve kunganciphisa isikhathi sokuvala, futhi ukwakheka okuvulayo okujikelezayo kukuvuselela ukubekwa uphawu ngamandla amakhulu e-centrifugal, okwenza ngcono ukusebenza emuva kwe-backflow.

Kusuka ezinhlelweni zamaphampu zamanzi kumapayipi e-aerospace,Bheka ama-valvesNjalo dlala indima ebalulekile ngokuthi "amasango e-munye". Ngokusebenzisa izinto ezintsha zesakhiwo, ukusebenza kahle kwemishini, kanye ne-iTetation ebonakalayo, kwakhiwa uhlelo lokuvikela amazinga amaningi ukuze kuqinisekiswe ukuthi ukugeleza okuphakathi ngokuqinile esiqondisweni esinqunyiwe, ukuhlinzeka ngesiqinisekiso esiqinile sokuphepha kwezimboni kanye nokwenza uhlelo.