Iyini i-valve uvemvane?
A uvemvane valveiyi-valve yokujika kwekota. Isetshenziselwa ukulawula noma ukuhlukanisa ukugeleza koketshezi kumapayipi. I-Butterfly valve nangenxa yomklamo wayo olula nokusebenza kahle nangayo yonke imikhakha yempilo.
Umsuka wegama le-valve uvemvane: i-valve flap yakheke njengovemvane futhi ibizwa kanjalo.
1. Isakhiwo
I-Butterfly valve iqukethe izingxenye eziyinhloko ezilandelayo:
- Umzimba: indlu ebamba zonke izingxenye zangaphakathi futhi exhuma epayipini.
- I-Disc: ipuleti eliyindilinga eliyisicaba ngaphakathi komzimba wevalvu, elilawula ukugeleza koketshezi ngokuzungezisa.
- Isiqu: I-shaft exhuma i-actuator ku-flap ye-valve futhi iyivumele ukuthi ijikeleze.
- Isihlalo: Indawo yokuvala ngaphakathi komzimba we-valve, lapho i-flapper incindezela khona isihlalo ukuze yenze uphawu lwe-hermetic lapho ivaliwe ukumisa ukugeleza koketshezi.
- I-Actuator: Ama-actuator enziwa ngesandla njengezibambo, amagiya wezikelemu, kodwa futhi nogesi kanye ne-pneumatic.
Lezi zingxenye zihlangana zenze ivalvu ehlangene, engasindi okulula ukuyifaka nokuyinakekela.
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2. Isimiso sokusebenza
Ukusebenza kwe-valve butterfly kusekelwe ku-torque kanye ne-hydrodynamics. Isidingo se-torque siyahlukahluka kuye ngomehluko wengcindezi phakathi kwezinhlangothi ezimbili ze-valve uvemvane kanye nokuma kwe-flap ye-valve. Kuyathakazelisa ukuthi i-torque ifinyelela ukuphakama kwama-valve angu-70-80% ngenxa ye-torque eguquguqukayo yoketshezi. Lesi sici sidinga ukufaniswa kwe-actuator okunembile.
Ukwengeza, ama-valve ovemvane anephesenti elilinganayo lokugeleza kwejika lesici, okusho ukuthi ukulungiswa okuncane ku-flap kunomthelela omkhulu kakhulu kuzinga lokugeleza ekuvulekeni kwama-valve aphansi kunokuvuleka okugcwele. Lokhu kwenza amavalvu ovemvane afaneleke ngokufanelekile ukulawula ukunyakazisa ezimeni ezithile, ngokuphambene nenkolelo evamile yokuthi afaneleka kuphela ukusetshenziswa kokuvula/ukuvala.
Ama-valve e-Butterfly alula futhi asebenza kahle:
- Indawo evulekile: i-flap ye-valve izungezisa ngokuqondana noketshezi, okuvumela uketshezi ukuba ludlule cishe ngaphandle kokuphikiswa.
- Indawo evaliwe: i-valve izungeza i-perpendicular ukuya lapho uketshezi lubheke khona, luvale ngokuphelele uketshezi.
Njengevalve yokujika kwekota, ishintsha phakathi kokuvuleka ngokugcwele nokuvala ngokugcwele ngokuzungezisa amadigri angu-90 kuphela, ngokushesha nangempumelelo.
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3. Izinzuzo nemibi
3.1 Izinzuzo zamavalvu ovemvane
- Ihlangene futhi ingasindi: Mancane futhi kulula ukuyifaka kunamanye amavalvu afana nesango noma ama-globe valves.
- Ezomnotho futhi ephumelelayo: izindleko eziphansi ngenxa yokwakhiwa okulula kanye nempahla encane.
- Isebenza ngokushesha: ingavulwa noma ivalwe ngokujika kwekota, ilungele ukusabela okusheshayo kwesidingo.
- Izindleko zokunakekela eziphansi: izingxenye ezimbalwa ezihambayo zisho ukuguga okuncane kanye nokunakekelwa okulula.
3.2 Ukungalungi kwamavalvu ovemvane
- I-throttling ekhawulelwe: ayilungele ukulawula ukugeleza okunembayo, ikakhulukazi lapho kunengcindezi ephezulu, njengoba kungaholela esiphithiphithini nokuguga.
- Ingozi yokuvuza: eminye imiklamo ingase ingavali ngokuqinile njengezinye izinhlobo zamavalvu futhi kunengozi yokuvuza.
- Ukwehla kwengcindezi: ngisho nalapho kuvuliwe, i-valve flap ihlala endleleni yokugeleza, okuholela ekunciphiseni okuncane kokucindezela.
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4. Izicelo
Amavalvu ovemvane asetshenziswa kakhulu ezimbonini eziningi ngenxa yekhono lawo lokulawula uketshezi oluningi ngokuncipha kokucindezela okuncane, okuwenza alungele amapayipi amakhulu.
Isibonelo:
- Ukwelashwa kwamanzi: ukuphatha ukugeleza kwamanzi ezindaweni zokuhlanza amanzi kanye namanethiwekhi okusabalalisa.
- Amasistimu we-HVAC: lawula ukugeleza komoya ekushiseni, ukungena komoya kanye nezinhlelo zokupholisa umoya.
- Ukucutshungulwa kwamakhemikhali: Kungasetshenziswa ukuphatha izinhlobonhlobo zamakhemikhali ngenxa yokuhambisana kwezinto.
- Ukudla Nesiphuzo: ngezinqubo zokuhlanzeka ngenxa yokuhlanza okulula.
- Uwoyela negesi: ilawula futhi ihlukanise ukugeleza kwamapayipi nasezindaweni zokuhluzwa.
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Kafushane,izivalo uvemvaneziyindlela yokulawula uketshezi esebenzayo nengabizi, ebongwa ngobulula nokuhlukahluka kwazo.