Kungani uvemvane i-valve ithambekele e-cavitation?

Ukususwa kweama-ama-ama-butterfly valvesKu-Cavitation kuhlobene kakhulu nezimpawu zabo zesakhiwo, izici ze-fluid dynamics, kanye nezimo zokusebenza. Izizathu ezithile zimi ngokulandelayo:

1. Isakhiwo se-butterfly valve siholela ekwakhekeni kwezindawo ezisezingeni eliphansi zengcindezi

Izingxenye zokuvula nokuvala ze-Butterfly Valves ngamapuleti abunjiwe e-discy Lapho ujikeleza ukuvula, uketshezi ludinga ukugeleza uzungeze umphetho wepuleti levemvane. Indawo ephansi yendawo ephansi izokwakha ngemuva kwepuleti levemvane (ohlangothini oluphansi). Lapho umfutho we-fluid ewehla ngaphansi kwengcindezi ye-vapor egcwele, amagesi ancibilikile ku-ketshezi azolungisa futhi akha ama-bubble, okuyisigaba sokuqala se-cavitation.

Isimo esijwayelekile: Ngaphansi kokuhlubuka kwengcindezi ephezulu noma izimo zokugeleza zamanzi eziphezulu, ukugeleza kwesivinini esisheshayo emaphethelweni epuletivelfly Plate kukhuphuka kakhulu. Ngokwemigomo kaBernoulli, ukukhuphuka kwe-flow velocity kuholela ekwehleni kwengcindezi, kwandisa okunye ukwakheka kwezindawo ezicindezelwe okuphansi kanye nokwakha izimo ze-cavitation.

2. Umthelela we-fluid shop kanye nokuwa kwe-bubble

Lapho uketshezi luthwala ama-bubble endaweni ephezulu kakhulu (njengamapayipi aphansi weama-ama-ama-butterfly valves), ama-bubble azowa ngokushesha, akhiqize ama-Jets amancane athinta indawo yensimbi. Imvamisa yalomthelela iphakeme kakhulu (kufika amashumi ezinkulungwane zezikhathi ngomzuzwana), okwenza ukuba isikhathi eside nokukhonkotha endaweni yensimbi, ekugcineni kwalimaza indawo yokubopha.

Ukuxhaswa kwedatha: Ukuhlolwa kuboniswe ukuthi amandla omthelela akhiqizwe yi-bubble Collapse angafinyelela kuma-megapascassas angamakhulu amaningana, adlula amandla okukhathala wezinto ezijwayelekile zensimbi, futhi yindlela ebaluleke kakhulu yokulimala kwe-cavitation.

I-3. Izici ezilawulayo zama-butterfly valves akhulisa ubungozi be-cavitation

Ama-butterfly ama-valves asetshenziswa ngokusetshenziswa komthetho we-flow, kepha lapho ukuvulwa kuncane (<15 ° ~ 20 °), i-fluid idlula ku-grawfle

I-Engineering Case: Ku-Inlet Valve noma i-Sexget Treatment System yesiteshi se-hydropower, uma i-butterfly valve isesimweni esincane sokuvula isikhathi eside, imigodi ye-cavitation izovela ngokushesha ngemuva kwepuleti ye-valve, idinga ukufakwa kabusha kwe-valve plate noma indandatho yokubopha uphawu.

4. Ithonya lezimpawu eziphakathi nendawo ezisebenzayo

Izinhlayiya eziqukethe okuphakathi: Uma uketshezi luqukethe izinhlayiya ezilukhuni njenge-sediment kanye ne-metal axides, ijet encane eyenziwe nge-cavitation izophatha ukubekwa uphawu komoya, yakha i- "erosion cavitation" imonakalo.

Izinga lokushisa eliphakeme noma le-Complocinage Media: Ukushisa okuphezulu kunganciphisa ukungezwani koketshezi futhi kukhuthaze ukwakheka kwama-bubble; I-Complocinami Media ingahle yenze buthaka amandla e-antiatiation wezinto zokwakha insimbi, futhi umphumela ophindwe kabili wandisa ukwehluleka kwama-valves wevemvane.

5. Ukulinganiselwa kwezinhlobo ze-batterfly valve kanye nemiklamo

I-Vallentric Eccentric / Center Butterfly Valve: Kuyadingeka ukucubungula ukuqondiswa kokugeleza kwamanzi (i-valve Plate enobandlululo phansi). Ukufakwa kabusha kuzolimaza ukuqina kwenkambu yokugeleza futhi kwandise ubungozi be-cavitation.

Ukufakwa kwepayipi okuqondile

I-Velfly ethambile ye-Butterfly Valveama-ama-ama-butterfly valves, yize ukumelana nokuguguleka, kube nezindleko eziphakeme nezinhlelo zokusebenza ezinomkhawulo.