Amavalvu eglobhu, amavalvu esango, amavalvu ovemvane, amavalvu okuhlola kanye namavalvu ebhola 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 ngaphambili nangemuva kwepayipi kukhulu 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 lwevalvu 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
