Amavalvu ebholazinezakhiwo eziningi, kodwa ngokuyisisekelo ziyafana. Izingxenye zokuvula nokuvala ziyizingqimba eziyindilinga eziyindilinga, ezakhiwe kakhulu izihlalo zamavalvu, amabhola, amasongo okuvala, iziqu zamavalvu kanye namanye amadivayisi okusebenza. Isiqu sevalvu sijikeleza ama-degree angu-90 ukuze kufezwe ukuvulwa nokuvalwa kwamavalvu. Amavalvu ebhola asetshenziswa kumapayipi ukuvala, ukusabalalisa, ukulawula ukugeleza nokushintsha indlela yokugeleza kwe-medium. Isihlalo samavalvu sisebenzisa izinhlobo ezahlukene zokuvala izihlalo ngokwezimo zokusebenza ezahlukene. Umzimba wevalvu yebhola yohlobo lwe-O ufakwe ibhola elinembobo ephakathi nendawo enobubanzi obulingana nobubanzi bepayipi. Ibhola lingajikeleza esihlalweni sokuvala. Kukhona indandatho enwebekayo e-annular ezinhlangothini zombili ohlangothini lwepayipi. Ivalvu yebhola yohlobo lwe-V inesakhiwo esimise okwe-V. Ingaphakathi levalvu liyigobolondo eliyindilinga elingu-1/4 eline-notch efana ne-V. Linamandla amakhulu okugeleza, ububanzi obukhulu obulungisekayo, amandla okugunda, futhi lingavalwa kahle. Lifaneleka kakhulu ezimweni zoketshezi lapho izinto zinomucu.
1. Isakhiwo se-valve yebhola yohlobo lwe-O:
I-valve yebhola yohlobo lwe-O ilawula indlela ephakathi nendawo ngokujikeleza ibhola ngo-y ngo-90°, ngenxa yalokho, umgodi odlulayo ungashintshwa, ngaleyo ndlela kubonakale ukuvulwa nokuvalwa kwevalve yebhola. I-valve yebhola yohlobo lwe-O isebenzisa umklamo ontantayo noma oqinile. Izingxenye ezihambayo ezenziwe ngezinto ezizigcobayo ezine-coefficient encane kakhulu yokungqubuzana, ngakho-ke i-torque yokusebenza incane. Ngaphezu kwalokho, ukuvalwa kwesikhathi eside kwegrisi yokuvala kwenza ukusebenza kube lula. Izinzuzo zomkhiqizo wayo yilezi ezilandelayo:
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I-valve yebhola yohlobo lwe-O inokumelana okuncane koketshezi
Ama-ball valve ngokuvamile anezakhiwo ezimbili: ububanzi obugcwele kanye nobubanzi obuncishisiwe. Kungakhathaliseki ukuthi yisiphi isakhiwo, i-coefficient yokumelana nokugeleza kwe-ball valve incane kakhulu. Ama-ball valve avamile aqondile, aziwa nangokuthi ama-ball valve agcwele ukugeleza. Ububanzi besiteshi bulingana nobubanzi bangaphakathi bepayipi, futhi ukulahlekelwa ukumelana kumane kungukumelana kokungqubuzana kobude obufanayo bepayipi. Le valve yebhola inokumelana okuncane kakhulu koketshezi kunawo wonke ama-valve. Kunezindlela ezimbili zokunciphisa ukumelana kwesistimu yamapayipi: enye iwukunciphisa izinga lokugeleza koketshezi ngokwandisa ububanzi bepayipi kanye nobubanzi be-valve, okuzokhulisa kakhulu izindleko zesistimu yamapayipi. Eyesibili iwukunciphisa ukumelana kwendawo kwe-valve, kanti ama-ball valve ayisinqumo esingcono kakhulu.
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I-valve yebhola yohlobo lwe-O ishintsha ngokushesha nangokulula
Ivalvu yebhola idinga ukujikeleza ama-degree angu-90 kuphela ukuze ivuleke noma ivalwe ngokuphelele, ukuze ivulwe futhi ivalwe ngokushesha.
- I-valve yebhola yohlobo lwe-O inokusebenza okuhle kokuvala
Iningi lezihlalo zamavalvu ebhola zenziwe ngezinto ezinwebekayo njenge-PTFE, ezivame ukubizwa ngokuthi amavalvu ebhola athambile. Amavalvu ebhola athambile anokusebenza kahle kokuvala futhi awadingi ukuqina okuphezulu kanye nokunemba kokucubungula kwendawo yokuvala amavalvu.
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I-valve yebhola yohlobo lwe-O inempilo ende yenkonzo
Ngenxa yokuthi i-PTFE/F4 inezakhiwo ezinhle zokuzigcoba, i-coefficient yokungqubuzana ne-sphere incane. Ngenxa yobuchwepheshe bokucubungula obuthuthukisiwe, ubulukhuni bebhola buyancishiswa, ngaleyo ndlela kwandisa kakhulu impilo yesevisi yevalvu yebhola.
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I-valve yebhola yohlobo lwe-O inokwethenjelwa okuphezulu
Ibhola elivalayo kanye nesihlalo se-valve ngeke kube nokuklwebheka, ukuguguleka okusheshayo kanye nezinye izinkinga;
Ngemva kokuba isiqu se-valve sishintshelwe kuhlobo olwakhelwe ngaphakathi, ingozi yengozi yokuthi isiqu se-valve singaphuma ngenxa yokukhululeka kwe-packing gland ngaphansi kwesenzo sokucindezela koketshezi okususiwe;
Ama-valve ebhola anezakhiwo ezingashintshi futhi ezingashisi angasetshenziswa emapayipini athutha uwoyela, igesi yemvelo, kanye negesi yamalahle.
Ingaphakathi le-valve (ibhola) ye-valve yebhola yohlobo lwe-O liyindilinga. Ngokombono wesakhiwo, isihlalo sebhola sifakwe esihlalweni ohlangothini lomzimba we-valve lapho kuvalwa. Izingxenye ezihambayo ezihambisanayo zenziwe ngezinto ezizigcobayo ezine-coefficient encane kakhulu yokungqubuzana, ngakho-ke i-torque yokusebenza incane. Ngaphezu kwalokho, ukuvalwa kwesikhathi eside kwegrisi yokuvala kwenza ukusebenza kube lula. Ngokuvamile kusetshenziswa ukulungiswa kwezikhundla ezimbili, izici zokugeleza zivuleka ngokushesha.
Uma i-valve yebhola yohlobo lwe-O ivuliwe ngokugcwele, izinhlangothi zombili aziphazanyiswa, zakha umzila oqondile onokuvalwa ngezindlela ezimbili. Isebenza kahle kakhulu "ngokuzihlanza" futhi ifaneleka ngezikhathi zokusika ezimbili zemidiya engcolile kakhulu nequkethe ifayibha. I-core yebhola ihlala idala ukungqubuzana ne-valve ngesikhathi senqubo yokuvula nokuvala i-valve. Ngesikhathi esifanayo, uphawu phakathi kwe-core ye-valve nesihlalo se-valve lutholakala ngamandla okuvala angaphambi kokuqinisa esihlalo se-valve ecindezela i-core yebhola. Kodwa-ke, ngenxa yesihlalo se-valve esithambile sokuvala, izakhiwo ezinhle kakhulu zemishini nezomzimba zenza ukusebenza kwayo kokuvala kube kuhle kakhulu.
2.Isakhiwo se-valve yebhola enomumo ongu-V:
Ingaphakathi lebhola levalvu yebhola enomumo we-V linomumo ofana no-V. Ingaphakathi levalvu iyigobolondo eliyindilinga elingu-1/4 elinesikwele esinomumo we-V. Linamandla amakhulu okugeleza, ububanzi obukhulu obulungisekayo, amandla okugunda, futhi lingavalwa kahle. Lifaneleka kakhulu uketshezi. Izimo lapho izinto zinomumo we-fiber. Ngokuvamile, amavalvu ebhola anomumo we-V angamavalvu ebhola anomumo owodwa. Akufanele ukusetshenziswa ngezindlela ezimbili.
Kunezinhlobo ezine eziyinhloko ze-notch enobunjwa obungu-V, amadigri ayi-15, amadigri angama-30, amadigri angama-60, namadigri angama-90.
Unqenqema olubunjwe ngo-V lusika ukungcola. Ngesikhathi sokujikeleza kwebhola, unqenqema olubukhali lommese olubunjwe ngo-V lwebhola luthinta isihlalo se-valve, ngaleyo ndlela lunqume imicu nezinto eziqinile kuketshezi. Kodwa-ke, ama-valve ebhola ajwayelekile awanalo msebenzi, ngakho-ke kulula ukubangela ukungcola kwe-fiber ukuba kubhajwe lapho kuvalwa, okubangela izinkinga zokulungisa nokulungisa. Ukugcinwa kuyisiphazamiso esikhulu. Ingaphakathi le-valve ye-valve yebhola enobunjwa ngo-V ngeke ibhajwe yimicu. Ngaphezu kwalokho, ngenxa yokuxhumeka kwe-flange, kulula ukuyihlukanisa nokuhlanganisa ngaphandle kwamathuluzi akhethekile, futhi ukugcinwa kulula uma i-valve ivaliwe. Kukhona umphumela wesikelo ofana nowe-wedge phakathi kwe-notch enobunjwa ngo-V nesihlalo se-valve, okungekhona nje kuphela umsebenzi wokuzihlanza kodwa futhi okuvimbela ingaphakathi lebhola ukuthi libhajwe. Umzimba we-valve, isembozo se-valve kanye nesihlalo se-valve kusebenzisa izakhiwo zensimbi ezikhomba iphuzu kuya iphuzu ngokulandelana, futhi kusetshenziswa i-coefficient encane yokungqubuzana. Isiqu se-valve sigcwele intwasahlobo, ngakho-ke i-torque yokusebenza incane futhi izinzile kakhulu.
I-valve yebhola enobunjwa buka-V iyisakhiwo esijikelezayo esinobunjwa buka-V esingafinyelela ukulawulwa kokugeleza. Ingafinyelela amazinga ahlukene okulingana ngokwe-engeli enobunjwa buka-V yebhola enobunjwa buka-V. I-valve yebhola enobunjwa buka-V ngokuvamile isetshenziswa kanye nama-actuator e-valve kanye nama-positioner ukuze kufezwe ukulungiswa okulingana. , I-valve enobunjwa buka-V ifaneleka kakhulu ngezikhathi ezahlukene zokulungisa. Ine-coefficient enkulu yokugeleza elinganiselwe, isilinganiso esikhulu esilungisekayo, umphumela omuhle wokuvala, akukho ukuzwela ekusebenzeni kokulungisa, usayizi omncane, futhi ingafakwa ngokuqondile noma ngokuvundlile. Ifanele ukulawula igesi, umusi, uketshezi kanye nezinye izinto. I-valve yebhola enobunjwa buka-V iyisakhiwo esijikelezayo esinobunjwa buka-V, esakhiwe umzimba we-valve enobunjwa buka-V, i-actuator yomoya, i-positioner nezinye izesekeli; inesici sokugeleza esingokwemvelo sesilinganiso esilingana; isebenzisa isakhiwo esithwala kabili, ine-torque encane yokuqala, futhi inozwela oluhle kakhulu kanye nesivinini sokuzwa, ikhono lokusika kakhulu.