Ama-valve ebholazinezakhiwo eziningi, kodwa ziyefana.Izingxenye ezivulayo nezivalayo ziyizindilinga eziyindilinga, ezakhiwe ikakhulukazi izihlalo zamavalvu, amabhola, izindandatho zokuvala, iziqu ze-valve kanye nezinye Izinsizakusebenza.Isiqu se-valve sizungeza ama-degree angu-90 ukuze kuzuzwe ukuvulwa nokuvalwa kwama-valve.Ama-valve amabhola asetshenziswa kumapayipi ukuvala, ukusabalalisa, ukulawula ukugeleza kanye nokushintsha indlela yokuhamba kwe-medium.Isihlalo se-valve sisebenzisa amafomu ahlukene okuvala izihlalo kuye ngezimo zokusebenza ezihlukene.Umzimba we-valve yebhola yohlobo lwe-O ufakwe ibhola elinendawo ephakathi nendawo embobeni ububanzi bayo obulingana nobubanzi bepayipi.Ibhola liyakwazi ukuzungeza esihlalweni sokuvala.Kunendandatho yokunwebeka ye-annular ezinhlangothini zombili ngasendleleni yepayipi.I-valve yebhola yohlobo lwe-V inesakhiwo esimise okwe-V.I-valve core iyigobolondo eliyindilinga elingu-1/4 elinenotshi emise okuka-V.Inomthamo omkhulu wokugeleza, ububanzi obukhulu obulungisekayo, amandla okugunda, futhi ingavalwa ngokuqinile.Ilungele ikakhulukazi izimo zoketshezi lapho okubalulekile kune-fibrous.
1. Isakhiwo se-valve yohlobo lwe-O:
I-valve yebhola yohlobo lwe-O ilawula isiqondiso se-medium ngokuzungezisa ibhola ngo-90 °, ngenxa yalokho, imbobo edlulayo ingashintshwa, ngaleyo ndlela ibone ukuvulwa nokuvala kwe-valve yebhola.I-valve yebhola yohlobo lwe-O yamukela umklamo ontantayo noma ongashintshi.Izingxenye ezihambayo ezihambisanayo zenziwe ngezinto zokuzigcoba nge-coefficient encane kakhulu ye-friction, ngakho-ke i-torque yokusebenza incane.Ngaphezu kwalokho, ukuvalwa kwesikhathi eside kwamafutha okuvalwa kwenza umsebenzi ube nezimo.Izinzuzo zayo zomkhiqizo zimi kanje:
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I-valve yebhola yohlobo lwe-O inokumelana noketshezi oluncane
Ama-valve ebhola ngokuvamile anezakhiwo ezimbili: ububanzi obugcwele kanye nobubanzi obuncishisiwe.Kungakhathaliseki ukuthi yisiphi isakhiwo, i-coefficient yokumelana nokugeleza kwe-valve yebhola incane kakhulu.Ama-valve ebhola ajwayelekile aqondile, abuye aziwe ngokuthi ama-full-flow ball valves.Ububanzi besiteshi bulingana nobubanzi bangaphakathi bepayipi, futhi ukulahlekelwa kokumelana kuphela ukumelana nokungqubuzana kobude obufanayo bepayipi.Le valve yebhola inokumelana okuncane koketshezi kuwo wonke ama-valve.Kunezindlela ezimbili zokunciphisa ukumelana kwesistimu yamapayipi: enye iwukunciphisa izinga lokugeleza kwamanzi ngokwandisa ububanzi bepayipi nobubanzi be-valve, okuzokwandisa kakhulu izindleko zesistimu yamapayipi.Okwesibili ukunciphisa ukumelana kwendawo kwe-valve, futhi ama-valve ebhola ayisinqumo esingcono kakhulu.
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I-valve yebhola yohlobo lwe-O ishintsha ngokushesha futhi kalula
I-valve yebhola idinga kuphela ukuzungezisa amadigri angu-90 ukuze ivuleke ngokugcwele noma ivaleke ngokugcwele, ukuze ikwazi ukuvulwa futhi ivalwe ngokushesha.
- I-valve yebhola yohlobo lwe-O inomsebenzi omuhle wokuvala uphawu
Iningi lezihlalo zamavalvu ebhola zenziwe ngezinto ezinwebekayo njenge-PTFE, ezivame ukubizwa ngokuthi ama-soft-sealing ball valves.Ama-valve ebhola athambile anokusebenza kahle kokuvala futhi awadingi ubulukhuni obuphezulu kanye nokunemba kokucubungula kwendawo yokuvala ama-valve.
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I-valve yebhola yohlobo lwe-O inokuphila isikhathi eside
Ngenxa yokuthi i-PTFE/F4 inezinto ezinhle zokuzithambisa, i-coefficient yokungqubuzana ne-sphere incane.Ngenxa yobuchwepheshe bokucubungula obuthuthukisiwe, ukuqina kwebhola kuyancishiswa, ngaleyo ndlela kwandise kakhulu impilo yesevisi ye-valve yebhola.
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I-valve yebhola ye-O inokwethenjelwa okuphezulu
I-pair yokuvala ibhola kanye nesihlalo se-valve ngeke ihlupheke imihuzuko, ukuguga okusheshayo namanye amaphutha;
Ngemva kokuba isiqu se-valve sishintshelwe ohlotsheni olwakhelwe ngaphakathi, ingozi yengozi yokuthi i-valve stem ingase indize iphume ngenxa yokuxegiswa kwe-gland yokupakisha ngaphansi kwesenzo sokucindezela kwamanzi okususiwe;
Amavalvu ebhola anezakhiwo ezimelene ne-static nezingashi angasetshenziswa kumapayipi athutha uwoyela, igesi yemvelo, negesi yamalahle.
I-valve core (ibhola) ye-valve yebhola yohlobo lwe-O iyindilinga.Ngokombono wesakhiwo, isihlalo sebhola sishunyekwa esihlalweni esiseceleni komzimba we-valve lapho kuvalwa.Izingxenye ezihambayo ezihambisanayo zenziwe ngezinto zokuzigcoba nge-coefficient encane kakhulu ye-friction, ngakho-ke i-torque yokusebenza incane.Ngaphezu kwalokho, ukuvalwa kwesikhathi eside kwamafutha okuvalwa kwenza umsebenzi ube nezimo.Ngokuvamile kusetshenziselwa ukulungiswa kwezindawo ezimbili, izici zokugeleza zivuleka ngokushesha.
Lapho i-valve yebhola yohlobo lwe-O ivuleke ngokugcwele, izinhlangothi zombili azivimbeli, zakha umgudu oqondile ovalwe ngezindlela ezimbili.Inokusebenza okungcono kakhulu "kokuzihlanza" futhi ifanele izikhathi zokusika izikhundla ezimbili zemidiya engcolile ikakhulukazi equkethe i-fiber.I-ball core ihlale idala ukungqubuzana ne-valve ngesikhathi sokuvula nokuvala inqubo ye-valve.Ngesikhathi esifanayo, uphawu phakathi kwe-valve core kanye nesihlalo se-valve kufinyelelwa ngamandla okuvala angaphambi kokuqina kwesihlalo se-valve ecindezela umgogodla webhola.Kodwa-ke, ngenxa yesihlalo se-valve yokuvala uphawu, izakhiwo ezinhle kakhulu zemishini nezomzimba zenza ukusebenza kwayo kokuvala kube kuhle kakhulu.
2.Isakhiwo se-valve yebhola emise okwe-V:
Umgogodla webhola we-valve yebhola emise okwe-V unesakhiwo esimise okwe-V.I-valve core iyigobolondo eliyindilinga elingu-1/4 elinenotshi emise okuka-V.Inomthamo omkhulu wokugeleza, ububanzi obukhulu obulungisekayo, amandla okugunda, futhi ingavalwa ngokuqinile.Ilungele ikakhulukazi uketshezi.Izimo lapho okubalulekile kune-fibrous.Ngokuvamile, ama-valve ebhola amise okwe-V angama-valve ebhola elilodwa.Ayifanele ukusetshenziswa ngezindlela ezimbili.
Kukhona ikakhulukazi 4 uhlobo notshi V emise, 15 degree, 30 degree, 60 degree, 90 degree.
Unqenqema olumise okwe-V lusika ukungcola.Ngesikhathi sokuzungezisa ibhola, unqenqema lombese obukhali omise okwe-V webhola luncike esihlalweni se-valve, ngaleyo ndlela lunqamule imicu kanye nezinto eziqinile oketshezini.Kodwa-ke, ama-valve amabhola ajwayelekile awanawo lo msebenzi, ngakho-ke kulula ukubangela ukungcola kwe-fiber ukuthi kubambeke lapho kuvalwa, okubangela izinkinga zokulungisa nokulungisa.Ukondla kuwukuphazamiseka okukhulu.I-valve core ye-valve yebhola emise okwe-V ngeke inamathele emicu.Ngaphezu kwalokho, ngenxa yokuxhumeka kwe-flange, kulula ukuhlakaza nokuhlanganisa ngaphandle kwamathuluzi akhethekile, futhi ukugcinwa nakho kulula.lapho i-valve ivaliwe.Kunomphumela wesikere omise okwe-wedge phakathi kwenotshi emise okwe-V kanye nesihlalo se-valve, esingagcini nje ngokuba nomsebenzi wokuzihlanza kodwa futhi esivimbela umgogodla webhola ukuthi ungabambeki.Umzimba we-valve, ikhava ye-valve nesihlalo se-valve zisebenzisa izakhiwo ze-point-to-point ngokulandelanayo, futhi kusetshenziswa i-coefficient encane yokungqubuzana.Isiqu se-valve silayishwe entwasahlobo, ngakho-ke i-torque yokusebenza incane futhi izinzile kakhulu.
I-valve yebhola emise okwe-V iyisakhiwo esijikelezayo se-right angle esingafinyelela ukulawulwa kokugeleza.Ingakwazi ukufinyelela amadigri ahlukene ngokwesilinganiso sebhola elimise okwe-V.Ivalvu yebhola emise okwe-V ivamise ukusetshenziswa ngokuhambisana nama-actuator nama-positioners ukuze kuzuzwe ukulungiswa ngokulinganayo., I-valve emise okwe-V ifaneleka kakhulu ngezikhathi ezihlukahlukene zokulungisa.Ine-coefficient yokugeleza okukhulu okulinganiselwe, isilinganiso esikhulu esilungisekayo, umphumela omuhle wokuvala, ukuzwela okuyiziro ekusebenzeni kokulungiswa, usayizi omncane, futhi ingafakwa iqonde noma ivundlile.Ifanele ukulawula igesi, umusi, uketshezi kanye neminye imidiya.I-valve yebhola efana ne-V iyisakhiwo esijikelezayo se-right-angle, esakhiwe ngomzimba we-valve omise okwe-V, i-actuator yomoya, i-positioner nezinye izesekeli;inesici sokugeleza esingokwemvelo esicishe silingane;yamukela ukwakheka okukabili, inetorque encane yokuqala, futhi inokuzwela okuhle kakhulu kanye nesivinini sokuzwa, ikhono lokugunda kakhulu.