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 ezihlukene zokusebenza. 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, uhla olukhulu olulungisekayo, 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 sishunyekwe 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, isembozo se-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.