Amavalvu eglobhu, ama-valve esango, amavalvu ovemvane, ama-valve okuhlola nama-valve amabhola konke kuyizingxenye zokulawula ezibalulekile ezinhlelweni zamapayipi ahlukahlukene namuhla.Wonke ama-valve ahlukile ngokubukeka, ukwakheka kanye nokusetshenziswa okusebenzayo.Kodwa-ke, i-valve yembulunga kanye ne-valve yesango inokufana okuthile ngokubukeka, futhi ngesikhathi esifanayo inomsebenzi wokuncishiswa epayipini, ngakho-ke kuyoba nabangane abaningi abangathintani kakhulu ne-valve ukuze kudideke kokubili.Eqinisweni, uma ubhekisisa kahle, umehluko phakathi kwevalve yembulunga nevalve yesango usemkhulu impela.
- Isakhiwo
Uma kunendawo elinganiselwe yokufaka, kubalulekile ukunaka ukukhethwa kwe:
I-valve yesango ingavalwa ngokuqinile ngendawo yokuvala ngokuncika ekucindezelweni okuphakathi, ukuze kuzuzwe umphumela wokungavuzi.Lapho uvula futhi uvala, i-valve spool kanye nendawo yokuvala isihlalo se-valve zihlala zithintana futhi zigudlana, ngakho-ke indawo yokuvala kulula ukugqoka, futhi lapho i-valve yesango iseduze nokuvalwa, umehluko wengcindezi phakathi ingaphambili nangemuva kwepayipi likhulu kakhulu, okwenza indawo yokuvala igqoke kakhulu.
Isakhiwo se-valve yesango sizoba yinkimbinkimbi kakhulu kune-valve yembulunga, kusukela endaweni yokubuka, esimweni se-caliber efanayo, i-valve yesango iphakeme kune-valve yembulunga, futhi i-valve yembulunga yinde kune-valve yesango. .Ngaphezu kwalokho, i-valve yesango ihlukaniswe yaba yinduku ekhanyayo nenduku emnyama.I-valve ye-globe ayikho.
- Sebenza
Lapho i-valve yembulunga ivulwa futhi ivaliwe, iwuhlobo lwesiqu esikhuphukayo, okusho ukuthi, isondo lesandla liyazungeziswa, futhi isondo lesandla lizokwenza ukujikeleza nokuphakamisa ukunyakaza kanye nesiqu se-valve.I-valve yesango iwukuguqula isondo lesandla, ukuze isiqu senze ukunyakaza kokuphakamisa, futhi isikhundla se-handwheel ngokwaso sihlala singashintshiwe.
Amazinga okugeleza ayahluka, namavalvu esango adinga ukuvalwa okugcwele noma okugcwele, kuyilapho ama-globe valve engafuni.I-valve yembulunga inendlela ecacisiwe yokungena nokuphuma, futhi i-valve yesango ayinazo izidingo zendlela yokungenisa nokuthumela ngaphandle.
Ngaphezu kwalokho, i-valve yesango ivuliwe kuphela ngokugcwele noma ivaliwe ngokugcwele izifunda ezimbili, ukuvulwa kwesango nokuvalwa kwe-stroke kukhulu kakhulu, isikhathi sokuvula nokuvala side.I-valve plate movement stroke of the globe valve incane kakhulu, futhi ipuleti levalvu levalvu yomhlaba lingama endaweni ethile linyakaze ukuze kulungiswe ukugeleza.I-valve yesango ingasetshenziselwa ukunqanyulwa kuphela futhi ayinawo omunye umsebenzi.
- Ukusebenza
I-valve ye-globe ingasetshenziselwa ukunqanyulwa nokulawula ukugeleza.Ukumelana noketshezi lwe-valve yembulunga kukhulu uma kuqhathaniswa, futhi kuba nzima kakhulu ukuvula nokuvala, kodwa ngenxa yokuthi ipuleti levalvu lifushane endaweni evalekayo, ukuvuleka nokuvala kufushane.
Ngenxa yokuthi i-valve yesango ingavuleka ngokugcwele futhi ivalwe ngokugcwele, lapho ivuliwe ngokugcwele, ukumelana nokugeleza okuphakathi esiteshini somzimba we-valve cishe ku-0, ngakho-ke ukuvulwa nokuvalwa kwe-valve yesango kuzosindisa kakhulu umsebenzi, kodwa ipuleti lesango likude nendawo yokuvala, futhi isikhathi sokuvula nokuvala side.
- Isiqondiso sokufaka nokugeleza
Umthelela we-valve yesango egeleza kuzo zombili izinkomba uyafana, futhi asikho isidingo sokuqondiswa kwe-inlet ne-outlet yokufaka, futhi okuphakathi kungageleza kuzo zombili izinkomba.Ivalvu yembulunga idinga ukufakwa ngokuhambisana ngokuqinile nesiqondiso sokuhlonzwa komcibisholo womzimba we-valve, futhi kunelungiselelo elicacile mayelana nendlela yokungenisa nokuthekelisa i-valve yomhlaba, kanye nendlela yokugeleza kwe-valve yembulunga “amathathu kuya ” e-China kusuka phezulu kuye phansi.
I-valve ye-globe iphansi futhi iphezulu, futhi kusukela ngaphandle kukhona amapayipi asobala angekho ezingeni lesigaba.Umgijimi wevalvu wesango usemugqeni ovundlile.I-stroke ye-valve yesango inkulu kunaleyo ye-valve yembulunga.
Ngokombono wokumelana nokugeleza, ukumelana nokugeleza kwe-valve yesango kuncane uma kuvuliwe ngokugcwele, futhi ukumelana nokugeleza kwe-valve yokumisa umthwalo kukhulu.I-coefficient yokumelana nokugeleza kwe-valve yesango evamile imayelana no-0.08 ~ 0.12, amandla okuvula nokuvala mancane, futhi okuphakathi kungageleza ngezindlela ezimbili.Ukumelana nokugeleza kwama-valve ajwayelekile okuvala izikhathi ezi-3-5 kunama-valve esango.Lapho uvula futhi uvala, kuyadingeka ukuphoqelela ukuvalwa ukuze kuzuzwe uphawu, i-valve spool ye-valve ye-globe ithintana kuphela nendawo yokuvala lapho ivaliwe ngokuphelele, ngakho-ke ukugqoka kwendawo yokuvala kuncane kakhulu, ngoba ukugeleza kwamandla amakhulu kudinga ukwengeza i-actuator Ye-valve yomhlaba kufanele inake ukulungiswa kwendlela yokulawula i-torque.
I-valve ye-globe inezindlela ezimbili zokufaka, enye ukuthi i-medium ingangena ngaphansi kwe-valve spool, inzuzo ukuthi lapho i-valve ivaliwe, ukupakisha akukho ngaphansi kwengcindezi, impilo yesevisi yokupakisha inganwetshwa, futhi umsebenzi wokufaka esikhundleni sokupakisha ungenziwa ngaphansi kwengcindezi yepayipi phambi kwe-valve;okungalungile ukuthi i-torque yokushayela ye-valve inkulu, cishe izikhathi ezingu-1 zokugeleza okuphezulu, futhi amandla e-axial we-valve stem makhulu, futhi i-valve stem kulula ukugoba.
Ngakho-ke, le ndlela ngokuvamile ifaneleka kuphela ama-valve eglobhu anobubanzi obuncane (i-DN50 noma ngaphansi), futhi amavalvu embulunga angaphezu kwe-DN200 akhethelwa indlela yemidiya egeleza ivela phezulu.(Amavalvu okuvala kagesi ngokuvamile asebenzisa i-medium ukuze angene phezulu.) Ububi bendlela imidiya engena ngayo isuka phezulu iphambene ncamashi nendlela engena ngayo ngezansi.
- Ukubeka uphawu
Indawo yokuvala i-valve yembulunga iyingxenye encane ye-trapezoidal ye-valve core (bheka ngokuqondile ukuma kwe-valve core), uma i-valve core iwa, ilingana nokuvalwa kwe-valve (uma umehluko wengcindezi mkhulu, Yebo, ukuvala shaqa akuqinile, kodwa umphumela wokuhlehla awumubi), i-valve yesango ivalwe eceleni kwepuleti lesango eliwumgogodla we-valve, umphumela wokuvala awumuhle njenge-valve yembulunga, futhi umgogodla we-valve uzokwenza. ungawi njengevalve yembulunga.
Isikhathi sokuthumela: Apr-01-2022