I-Butterfly valve iwuhlobo lwe-valve esebenzisa uhlobo lwe-disc okuvula nokuvala izingxenye ukuze ijikele emuva naphambili cishe ngo-90° ukuze ivule, ivale noma ilungise ukugeleza kokuphakathi.I-Butterfly valve ayinayo nje isakhiwo esilula, usayizi omncane, isisindo esincane, ukusetshenziswa kwezinto eziphansi, usayizi omncane wokufaka, i-torque encane yokushayela, ukusebenza okulula nokushesha, kodwa futhi inomsebenzi omuhle wokulawula ukugeleza kanye nezici zokuvala nokuvala ngesikhathi esifanayo.Ama-valve ovemvane asetshenziswa kakhulu.
Ngokusetshenziswa kwerabha yokwenziwa engazweli ngamakhemikhali kumavalvu ovemvane, ukusebenza kwamavalvu ovemvane kuye kwathuthukiswa.Njengoba irabha yokwenziwa inezici zokumelana nokugqwala, ukumelana nokuguguleka, usayizi ozinzile, ukuqina okuhle, ukwakheka okulula, nezindleko eziphansi, irabha yokwenziwa enezakhiwo ezihlukene ingakhethwa ngokuvumelana nezidingo ezihlukene zohlelo lokusebenza ukuhlangabezana nezimo zokusebenza zama-valve ovemvane.
Ngoba i-polytetrafluoroethylene (PTFE) inokumelana nokugqwala okuqinile, ukusebenza okuzinzile, akulula ukuguga, i-coefficient ephansi yokungqubuzana, ukubunjwa okulula, usayizi ozinzile, kanye nokusebenza kwayo okuphelele kungathuthukiswa ngokugcwalisa nokwengeza izinto ezifanele ukuze uthole amandla angcono nokungqubuzana.Izinto zokuvala izivalo ze-Butterfly ezine-coefficient ephansi zinqoba ukulinganiselwa kwerabha yokwenziwa.Ngakho-ke, izinto eziphakeme ze-polymer ze-molecular ezimelelwe i-polytetrafluoroethylene kanye nokugcwalisa kwazo izinto eziguquliwe ziye zasetshenziswa kabanzi kuma-valve e-butterfly, ukuze ukusebenza kwe-butterfly valves kuthuthukiswe.Kuye kwathuthukiswa ngokwengeziwe, futhi i-valve yevemvane enezinga lokushisa elibanzi nobubanzi bengcindezi, ukusebenza okuthembekile kokuvala nempilo ende yesevisi yenziwe.
Ukuze kuhlangatshezwane nezidingo zezicelo zezimboni ezifana nezinga lokushisa eliphezulu neliphansi, ukuguguleka okuqinile, nokuphila isikhathi eside, ama-valve uvemvane avaliwe ngensimbi aye athuthukiswa kakhulu.Ngokusetshenziswa kokumelana nokushisa okuphakeme, ukumelana nokushisa okuphansi, ukumelana nokugqwala okuqinile, ukumelana nokuguguleka okuqinile, kanye ne-high-power alloy materials kuma-valve uvemvane, ama-valve uvemvane avaliwe ngensimbi asetshenziswe kabanzi emikhakheni yezimboni njengamazinga okushisa aphezulu naphansi, aqinile. ukuguguleka, nokuphila isikhathi eside.Amavavu ovemvane anobubanzi obukhulu (9~750 mm), umfutho ophezulu (42.0 MPa), kanye nezinga lokushisa elibanzi (-196 - 606°C) avele.
Lapho i-valve ye-butterfly ivuliwe ngokugcwele, inokumelana nokugeleza okuncane.Uma ukuvulwa kuphakathi kuka-15 ° ~ 70 °, kungenza futhi ukulawula ukugeleza okubucayi, ngakho-ke emkhakheni wokulawulwa kobubanzi obukhulu, ukusetshenziswa kwama-butterfly valves kuvame kakhulu.
Njengoba ukunyakaza kwepuleti uvemvane kusula, ama-valve amaningi ovemvane angasetshenziselwa imidiya enezinhlayiya eziqinile ezimisiwe.Ngokuya ngamandla esigxivizo, ingabuye isetshenziselwe i-powdery ne-granular media.
Ama-valve e-butterfly afanele ukulawulwa kokugeleza.Njengoba ukulahlekelwa kwengcindezi ye-valve uvemvane epayipini kukhulu, cishe izikhathi ezintathu kune-valve yesango, lapho kukhethwa i-valve uvemvane, ithonya lokulahlekelwa kwengcindezi ohlelweni lwepayipi kufanele licatshangelwe ngokugcwele, futhi amandla ipuleti uvemvane ukumelana nokucindezela kwephayiphi medium lapho ivaliwe kufanele kucatshangelwe..Ukwengeza, umkhawulo wokushisa okusebenzayo kwempahla yesihlalo esinwebekayo ekushiseni okuphezulu kufanele kucatshangelwe.
Ubude besakhiwo nokuphakama okuphelele kwe-valve uvemvane kuncane, isivinini sokuvula nokuvala siyashesha, futhi sinezici ezinhle zokulawula uketshezi.Isimiso sesakhiwo se-valve ye-butterfly ifaneleka kakhulu ekwenzeni ama-valve amakhulu.Lapho i-valve ye-butterfly idingeka ukuthi isetshenziselwe ukulawula ukugeleza, into ebaluleke kakhulu ukukhetha kahle ukucaciswa nohlobo lwe-butterfly valve ukuze lusebenze kahle nangempumelelo.
Ngokuvamile, ama-valve ovemvane atuswa ukunyakazisa, ukulawula izimiso kanye nemidiya yodaka lapho ubude obufushane besakhiwo, isivinini sokuvula nokuvala ngokushesha, nokunqanyulwa kwengcindezi ephansi (umehluko omncane wokucindezela) kuyadingeka.Ama-valve e-Butterfly angakhethwa ukulungiswa kwe-double position, iziteshi ezinobubanzi obuncishisiwe, umsindo ophansi, i-cavitation kanye ne-vaporization, inani elincane lokuvuza emkhathini, kanye nemidiya ehlukumezayo.Ukulungiswa kwe-throttle ngaphansi kwezimo ezikhethekile zokusebenza, noma izimo zokusebenza ezidinga ukubekwa uphawu okuqinile, ukugqoka okunzima, izinga lokushisa eliphansi (cryogenic) njalonjalo.
| I-Grooved Flanged Butterfly Valve | |||||||
| Ukucaciswa Kwezibizo | Ingcindezi | Ubukhulu (mm) | |||||
| mm | intshi | PN | H | D | F | d | B |
| 50 | 2 | 10 | 157 | 52 | 60.3 | 65 | 81 |
| 16 | 157 | 52 | 60.3 | 65 | 81 | ||
| 25 | 157 | 52 | 60.3 | 65 | 81 | ||
| 65 | 2.5 | 10 | 182 | 63 | 73 | 65 | 96.8 |
| 16 | 182 | 66 | 76.1 | 65 | 96.8 | ||
| 25 | 182 | 66 | 76.1 | 65 | 96.8 | ||
| 80 | 3 | 10 | 196 | 78.8 | 88.9 | 65 | 96.8 |
| 16 | 196 | 78.8 | 88.9 | 65 | 96.8 | ||
| 25 | 196 | 78.8 | 88.9 | 65 | 96.8 | ||
| 100 | 4 | 10 | 226 | 96.3 | 108 | 65 | 115.8 |
| 16 | 226 | 96.3 | 108 | 65 | 115.8 | ||
| 25 | 233 | 102.8 | 114.3 | 65 | 115.8 | ||
| 125 | 5 | 10 | 273 | 120.6 | 133 | 90 | 147.6 |
| 16 | 279 | 127.1 | 139.7 | 90 | 147.6 | ||
| 25 | 279 | 127.1 | 141.3 | 90 | 147.6 | ||
| 150 | 6 | 10 | 298 | 145.1 | 159 | 90 | 147.6 |
| 16 | 303 | 151.6 | 165.1 | 90 | 147.6 | ||
| 25 | 303 | 151.6 | 168.3 | 90 | 147.6 | ||
| 200 | 8 | 10 | 369 | 230.4 | 219.1 | 90 | 133.4 |
| 16 | 369 | 230.4 | 219.1 | 90 | 133.4 | ||
| 25 | 369 | 230.4 | 219.1 | 90 | 133.4 | ||
