I-butterfly valve uhlobo lwe-valve esebenzisa izingxenye zediski zokuvula nokuvala izingxenye ukuzungeza cishe u-90 ° ukuvula, ukuvala noma ukulawula ukuhamba okuphakathi. I-butterfly valve ayilula nje esakhiweni, ngosayizi omncane, isisindo esincane, ukusetshenziswa okuphansi kwezinto, usayizi wokufaka omncane, itorque yokushayela encane, elula futhi esebenza ngokushesha, kepha futhi inomsebenzi omuhle wokuhamba kokuhamba nokuvala izici zokuvala ngasikhathi sinye. Ingenye yezinhlobo zama-valve ezithuthuka kakhulu eminyakeni eyishumi edlule. Ama-valve e-Butterfly asetshenziswa kabanzi. Izinhlobonhlobo nobungako bokusetshenziswa kwayo kusakhula, futhi kuthuthukela ekushiseni okuphezulu, umfutho ophakeme, ububanzi obukhulu, ukubekwa uphawu okuphezulu, impilo ende, izici ezinhle kakhulu zokulawula, nokusebenza okuningi kwe-valve eyodwa. Ukuthembeka kwayo nezinye izinkomba zokusebenza kufinyelele ezingeni eliphezulu.
Ngokusetshenziswa kwenjoloba yokwenziwa ngamakhemikhali kumvemvane wevemvane, ukusebenza kwevemvane levelufa kungathuthukiswa. Injoloba yokwenziwa inezici zokumelana nokugqwala, ukumelana nokuguguleka komhlaba, ukuqina kobukhulu, ukuqina okuhle, ukwakha okulula nezindleko eziphansi, futhi kungakhethwa ngokuya ngezidingo ezahlukahlukene zokuhlangabezana nezimo zokusebenza kweveluvane levemvane.
I-Polytetrafluoroethylene (PTFE) inokumelana nokugqwala okuqinile, ukusebenza okuzinzile, akulula ukuguga, i-coefficient ephansi yokubanga, ukwakha kalula, usayizi ozinzile, nokusebenza kwayo okuphelele kungathuthukiswa ngokugcwalisa nokungeza izinto ezifanele ukuthola impahla yokufaka uphawu lwe-butterfly valve ngamandla angcono futhi i-coefficient ephansi yokungqubuzana, enqoba ukulinganiselwa kwenjoloba yokwenziwa. Ngakho-ke, i-polytetrafluoroethylene (i-PTFE) ingummeleli wezinto ezihlanganisiwe ze-polymer polymer futhi izinto zabo zokugcwalisa eziguquliwe zisetshenziswe kakhulu kuma-butterfly valve, ukuze ukusebenza kwamaveluvemvane kuthuthukiswe ngokwengeziwe. Amaphayiphu e-Butterfly anezinga lokushisa elibanzi nobubanzi bengcindezi, ukusebenza okuthembekile kokubekwa uphawu kanye nempilo yesevisi ende kukhiqiziwe.
Ukuze kuhlangatshezwane nezidingo zokushisa okuphezulu nokuphansi, ukuguguleka okunamandla, impilo ende nezinye izinhlelo zokusebenza zezimboni, i-valve yensimbi enamathele yensimbi yenziwe kakhulu. Ngokusetshenziswa kokumelana nokushisa okuphezulu, ukumelana nokushisa okuphansi, ukumelana nokugqwala okuqinile, ukumelana nokuqina okuqinile kanye nezinto eziphakeme zamandla e-alloy kuma-butterfly valves, ama-valve wensimbi avaliwe ensimbi asetshenziswe kakhulu ekushiseni okuphezulu nokuphansi, ukuguguleka okuqinile, impilo yenkonzo ende nokunye imikhakha yezimboni. Ama-valve e-Butterfly anobubanzi obukhulu (9 ~ 750mm), umfutho ophakeme (42.0mpa) nobubanzi bokushisa obubanzi (- 196 ~ 606 ℃) kuvele, okwenza ubuchwepheshe beveluvane bufinyelele ezingeni elisha.
Ivelufa levemvane linokumelana okuncane kokugeleza lapho livulwe ngokuphelele. Lapho ukuvulwa kuphakathi kuka-15 ° no-70 ° nakho kungalawula ukuhamba ngokuzwela. Ngakho-ke, i-butterfly valve isetshenziswa kakhulu emkhakheni womthethonqubo omkhulu wobubanzi.
Njengoba ukunyakaza kwediski yevemvane ngokusula, ngakho-ke ama-valve amaningi evemvane angasetshenziswa ngezinhlayiya eziqinile ezimisiwe zendlela. Ngokwamandla wophawu, lungasetshenziselwa i-powder kanye nemidiya eyimbudumbudu.
Ama-valve e-Butterfly afanele ukulawulwa kokugeleza. Njengoba ukulahleka kwengcindezi kweveluvane levemvane epayipini kukhulu kakhulu, okucishe kube cishe kathathu kunalokho kwe-valve yesango, ithonya lokwehla kwengcindezi ohlelweni lwamapayipi kufanele licatshangwe ngokuphelele lapho kukhethwa ivemvane valve, namandla wepuleti uvemvane onepayipi ukucindezelwa okuphakathi lapho kuvalwa kufanele kubhekwe. Ngaphezu kwalokho, umkhawulo wokushisa osebenzayo wezinto zokuhlala eziqinile ekushiseni okuphezulu kufanele kubhekwe.
Ubude besakhiwo nokuphakama okuphelele kwe-valve uvemvane kuncane, isivinini sokuvula nokuvala siyashesha, futhi inezici ezinhle zokulawula uketshezi. Umgomo wesakhiwo wevemvane yevemvane ulunge kakhulu ekwenzeni i-valve enkulu yobubanzi. Lapho kudingeka ukuthi iveluvane levemvane lisetshenziselwe ukulawula ukugeleza, into ebaluleke kakhulu ukukhetha kahle ubukhulu nohlobo lweveluvane levemvane, ukuze lisebenze kahle nangempumelelo.
Ngokuvamile, ekubambeni, ekulawuleni ukulawula nasendaweni yodaka, ubude besakhiwo esifushane, ukuvulwa okusheshayo nokuvalwa kwesivinini kanye nokusikwa kwengcindezi ephansi (umehluko omncane wengcindezi) kuyadingeka, futhi kunconywa ivalvevemvane. I-butterfly valve ingasetshenziswa ekulungisweni kwesikhundla esiphindwe kabili, isiteshi sobubanzi esincishisiwe, umsindo ophansi, i-cavitation kanye ne-vaporization phenomenon, ukuvuza okuncane emkhathini naphakathi kwe-abrasive. Ukulungiswa kwe-throttling ngaphansi kwezimo zokusebenza ezikhethekile, noma ukubekwa uphawu okuqinile, ukugqoka okunzima kanye nezimo zokusebenza okushisa okuphansi (cryogenic) kuyadingeka.
isakhiwo
It is ikakhulukazi yakhiwa valve umzimba, valve induku, uvemvane ipuleti futhi uphawu indandatho. Umzimba we-valve uyindilinga onobude obufushane be-axial nepuleti levemvane elakhelwe ngaphakathi.
isici
1. I-butterfly valve inezici zesakhiwo esilula, ivolumu encane, isisindo esincane, ukusetshenziswa okuphansi kwezinto, usayizi omncane wokufaka, iswishi esheshayo, ukujikeleza okungu-90 °, i-torque encane yokushayela, njll. Isetshenziselwa ukunqamula, ukuxhuma nokulungisa phakathi kwepayipi, futhi inezici ezinhle zokulawula uketshezi nokusebenza kokuvala.
2. Ivelufa levemvane lingahambisa udaka futhi ligcine uketshezi oluncane emlonyeni wepayipi. Ngaphansi kwengcindezi ephansi, ukubekwa uphawu okuhle kungatholakala. Ukusebenza okuhle komthethonqubo.
3. Ukuklanywa okulula kwepuleti levemvane kwenza ukulahleka kokumelana noketshezi kube kuncane, okungachazwa njengomkhiqizo wokonga amandla.
4. Induku ye-valve inokumelana nokugqwala okuhle nempahla yokulwa nokuhuzuka. Lapho ivalvevevemvane ivulwa futhi ivalwa, induku ye-valve ijikeleza kuphela futhi ayihambi phansi naphansi. Ukupakisha kwenduku ye-valve akulula ukuthi konakale futhi ukubekwa uphawu kuyethembakala. Ilungiswa ngophini we-taper wepuleti levemvane, futhi ukuphela okunwetshiwe kuklanyelwe ukuvimbela induku ye-valve ukuthi ingawi lapho ukuxhumana phakathi kwenduku ye-valve kanye nepuleti levemvane kuphuka ngengozi.
5. Kukhona ukuxhumana kwe-flange, ukuxhumana ngocingo, ukuxhumana kwe-butt welding nokuxhumeka kwe-lug ngocingo.
Amafomu okushayela afaka phakathi i-manual, i-worm gear drive, i-electric, i-pneumatic, i-hydraulic kanye ne-electro-hydraulic yokuxhuma ama-actuator, okwazi ukubona ukulawulwa okukude nokusebenza okuzenzakalelayo.
Isikhathi Iposi: Dec-18-2020