Njengamanje, i-uvemvane valveiyingxenye esetshenziselwa ukuqaphela ukulawulwa kokuvala nokugeleza kwesistimu yamapayipi.
Isetshenziswe kabanzi emikhakheni eminingi efana ne-petroleum, imboni yamakhemikhali, i-metallurgy, i-hydropower njalonjalo.Kubuchwepheshe obaziwayo be-butterfly valve, ifomu layo lokuvala ngokuvamile lithatha isakhiwo sokuvala,
Izinto zokuvala irabha, i-polytetraoxyethylene, njll. Ngenxa yomkhawulo wezimpawu zesakhiwo, azifaneleki izimboni ezifana nokumelana nokushisa okuphezulu, ukumelana nokucindezela okukhulu, ukumelana nokugqwala, nokumelana nokugqoka.
I-valve uvemvane ekhona ethuthuke ngokuqhathaniswa iyivalve uvemvane eyinsimbi ene-triple-eccentric hard-sealed.Umzimba obanzi nesihlalo se-valve yizingxenye ezixhumene, futhi ungqimba olungaphezulu lokuvala lwesihlalo se-valve lushiselwe ngezinto ze-alloy ezimelana nezinga lokushisa nokungagqwali.
Indandatho yokuvala ethambile enezingqimba eziningi ifakwe epuleti levalvu.Uma kuqhathaniswa ne-valve ye-butterfly evamile, lolu hlobo lwe-valve uvemvane lukwazi ukumelana nokushisa okuphezulu, kulula ukusebenza, futhi alukho ukungqubuzana lapho kuvulwa futhi ivala.Lapho uvala, i-torque yendlela yokudlulisela iyanda ukuze inxephezele ukuvalwa.
Thuthukisa ukusebenza kokuvala kwe-valve uvemvane kanye nezinzuzo zokwandisa impilo yesevisi.
Nokho, le valve uvemvane isenazo izinkinga ezilandelayo ngesikhathi isetshenziswa
Njengoba indandatho yokuvala ene-lamine enezingqimba eziningi ethambile futhi eqinile igxilile epuletini elibanzi, lapho ipuleti levalvu livame ukuvuleka, indawo ephakathi izokwakha ukukhuhla okuhle endaweni yayo yokuvala, futhi ibhande elithambile lokuvala isangweji leshidi lensimbi lizokwenza ngokuqondile. kuthinta ukusebenza kokubekwa uphawu ngemuva kokukhishwa.
Kunqunyelwe izimo zesakhiwo, lesi sakhiwo asifanele ama-valve anobubanzi obungaphansi kwe-DN200, ngoba ukwakheka okuphelele kwepuleti le-valve likhulu kakhulu futhi ukumelana nokugeleza kukhulu.
Ngenxa yomgomo wesakhiwo se-eccentric kathathu, uphawu phakathi kwendawo yokuvala ye-valve plate kanye nesihlalo se-valve sincike ku-torque yedivayisi yokudlulisela ukucindezela ipuleti elibanzi ngokumelene nesihlalo se-valve.Esimeni sokugeleza esihle, ukuphakama kwengcindezi ephakathi nendawo, kuqina i-extrusion yokuvala.
Lapho umzila wesiteshi sokugeleza ugeleza ubuyela emuva, njengoba ingcindezi ephakathi ikhula, ingcindezi yeyunithi phakathi kwepuleti le-valve nesihlalo se-valve ingaphansi kwengcindezi ephakathi, uphawu luqala ukuvuza.
Ivalve uvemvane esebenza kahle enezinhlangothi ezimbili ibonakala ngokuthi indandatho yokuvala isihlalo esibanzi yakhiwe izendlalelo eziningi zamashidi ensimbi engagqwali ezinhlangothini zombili zendandatho yokuvala ethambile emise okuka-T.Indawo yokuvala ye-slab kanye nesihlalo se-valve iyisakhiwo se-oblique cone,
Ingaphezulu le-oblique cone ye-valve plate ishiselwe ngezinto ze-alloy ezimelana nokushisa kanye nokubola;intwasahlobo ehleliwe phakathi kwepuleti lokucindezela lendandatho yokulungisa kanye nebhawodi yokulungisa yepuleti lokucindezela kuhlanganiswe ndawonye.
Lesi sakhiwo sinxephezela ngokuphumelelayo indawo yokubekezelelana phakathi komkhono we-shaft kanye nomzimba we-valve kanye nokuguqulwa okunwebekayo kwenduku ebanzi ngaphansi kwengcindezi ephakathi, futhi ixazulula inkinga yokuvala i-valve endleleni yokudlulisa i-medium eshintshashintshayo yezindlela ezimbili.
Indandatho yokuvala yakhiwe ngeshidi lensimbi engenasici elithambile elimise okwe-T elinezingqimba eziningi ezinhlangothini zombili, elinezinzuzo ezimbili zophawu oluqinile lwensimbi nophawu oluthambile, futhi elinomsebenzi wokuvala wokuvuza kwe-zero kungakhathaliseki izinga lokushisa eliphansi kanye nokuphakama okuphezulu. izinga lokushisa.
Ukuhlolwa kufakazela ukuthi lapho ichibi lisesimweni sokugeleza okuhle (isiqondiso sokugeleza kwe-medium sifana nesiqondiso sokujikeleza kwepuleti levemvane), ingcindezi endaweni yokuvala ikhiqizwa yi-torque yedivayisi yokudlulisela kanye isenzo sokucindezela okuphakathi ku-valve plate.
Lapho ingcindezi ephakathi nendawo ikhuphuka, lapho i-oblique cone surface ye-valve iqina kanye nendawo yokuvala yesihlalo se-valve iyacindezelwa, kuba ngcono umphumela wokuvala.Esimeni sokugeleza okubuyela emuva, uphawu phakathi kwepuleti le-valve nesihlalo se-valve sincike ku-torque yedivayisi yokushayela ukuze ucindezele ipuleti le-valve esihlalweni.
Ngokukhuphuka kwengcindezi ephakathi nendawo, lapho iyunithi yokucindezela okuhle phakathi kwepuleti ye-valve nesihlalo se-valve ingaphansi kwengcindezi ephakathi,
Amandla okuguqula agciniwe entwasahlobo yendandatho yokulungisa ngemva kokulayishwa anganxephezela ukucindezela okuqinile kwendawo yokuvala yepuleti levalvu kanye nesihlalo sevalvu ukuze kunxeshezelwe ngokuzenzakalelayo.
Ngakho-ke, ngokungafani nobuciko bangaphambili, imodeli yensiza ayifaki indandatho eqinile yokuvala izingqimba eziningi epuleti le-valve, kodwa iyifaka ngokuqondile emzimbeni we-valve.Ukwengezwa kwendandatho yokulungisa phakathi kwepuleti lokucindezela kanye nesihlalo se-valve kuyindlela ekahle kakhulu yokuvala uphawu okunzima kwezindlela ezimbili..
Ingakwazi ukufaka ama-valve esango, ama-globe valves nama-globe valves.