Ama-valve e-globe, ama-valve esango, ama-valve e-butterfly, ama-valve okuhlola kanye nama-valve ebhola konke kuyizinto ezibalulekile zokulawula ezinhlelweni ezahlukene zamapayipi namuhla. I-valve ngayinye ihlukile ngokubukeka, isakhiwo kanye nokusetshenziswa okusebenzayo. Kodwa-ke, i-valve ye-globe kanye ne-valve yesango kunezinto ezifanayo ngokubukeka, futhi ngesikhathi esifanayo kunomsebenzi wokunqunywa epayipini, ngakho-ke kuzoba nabangani abaningi abangenawo ukuxhumana okuningi ne-valve ukuze badideke bobabili. Eqinisweni, uma ubheka ngokucophelela, umehluko phakathi kwe-valve ye-globe kanye ne-valve yesango usemkhulu kakhulu.
- Isakhiwo
Uma isikhala sokufaka sincane, kubalulekile ukunaka ukukhethwa kwalokhu okulandelayo:
Ivalvu yesango ingavalwa ngokuqinile ngomphezulu wokuvala ngokuthembela kungcindezi ephakathi, ukuze kufezwe umphumela wokungavuzi. Lapho ivulwa futhi ivalwa, i-valve spool kanye nomphezulu wokuvala isihlalo sevalvu zihlala zithintana futhi zigudlana, ngakho-ke umphezulu wokuvala kulula ukuwugqoka, futhi lapho ivalvu yesango iseduze nokuvala, umehluko wokucindezela phakathi kwangaphambili nangemuva kwepayipi mkhulu kakhulu, okwenza umphezulu wokuvala ugqoke kakhulu.
Isakhiwo se-valve yesango sizoba yinkimbinkimbi kakhulu kune-valve ye-globe, ngokombono wokubukeka, uma kwenzeka i-caliber efanayo, i-valve yesango iphakeme kune-valve ye-globe, kanti i-valve ye-globe inde kune-valve yesango. Ngaphezu kwalokho, i-valve yesango ihlukaniswe ngenduku ekhanyayo kanye nenduku emnyama. I-valve ye-globe ayinjalo.
- Umsebenzi
Uma ivalvu yomhlaba ivulwa futhi ivaliwe, iwuhlobo lwesiqu esikhuphukayo, okungukuthi, isondo lesandla liyajikeleziswa, futhi isondo lesandla lizokwenza ukunyakaza kokujikeleza nokuphakamisa kanye nesiqu sevalvu. Ivalvu yesango kufanele iphendule isondo lesandla, ukuze isiqu senze ukunyakaza kokuphakamisa, futhi indawo yesondo lesandla ngokwayo ingashintshi.
Amazinga okugeleza ayahlukahluka, ngama-valve esango adinga ukuvalwa okugcwele noma okugcwele, kuyilapho ama-valve e-globe engenawo. I-globe valve inesiqondiso esithile sokungena kanye nesokuphuma, futhi i-valve yesango ayinazo izidingo zesiqondiso sokungenisa nokuthumela ngaphandle.
Ngaphezu kwalokho, ivalvu yesango ivuleka ngokuphelele noma ivaliwe ngokuphelele kuphela izimo ezimbili, ukuvulwa nokuvalwa kwesango kukhulu kakhulu, isikhathi sokuvula nokuvala side kakhulu. Ukunyakaza kweplate yevalvu yevalvu yeglobe kuncane kakhulu, futhi iplate yevalvu yeglobe ingama endaweni ethile ishukuma ukuze kulungiswe ukugeleza. Ivalvu yesango ingasetshenziswa kuphela ukunqunywa futhi ayinawo omunye umsebenzi.
- Ukusebenza
I-globe valve ingasetshenziswa ekunqanyulweni nasekulawulweni kokugeleza. Ukumelana koketshezi kwe-globe valve kukhulu kakhulu, futhi kunzima kakhulu ukuyivula nokuvala, kodwa ngenxa yokuthi ipuleti le-valve lifushane ukusuka ebusweni bokuvala, ukushaya kokuvula nokuvala kufushane.
Ngenxa yokuthi ivalvu yesango ingavuleka futhi ivalwe ngokuphelele kuphela, uma ivuliwe ngokuphelele, ukumelana kokugeleza okuphakathi emgodini womzimba wevalvu kucishe kube ngu-0, ngakho-ke ukuvulwa nokuvalwa kwevalvu yesango kuzosindisa kakhulu abasebenzi, kodwa ipuleti yesango likude kakhulu nendawo yokuvala, futhi isikhathi sokuvula nokuvala side.
- Ukufakwa kanye nesiqondiso sokugeleza
Umphumela wevalvu yesango egeleza kuzo zombili izinhlangothi uyafana, futhi akukho mfuneko yesiqondiso sokungena nesokuphuma sokufakwa, futhi i-medium ingageleza kuzo zombili izinhlangothi. Ivalvu yembulunga idinga ukufakwa ngokuhambisana ngqo nesiqondiso sokuhlonza umcibisholo womzimba wevalvu, futhi kukhona ilungiselelo elicacile mayelana nesiqondiso sokungenisa nokuthumela ngaphandle kwevalvu yembulunga, futhi isiqondiso sokugeleza kwevalvu yembulunga "ezintathu kuya" eShayina sisuka phezulu kuya phansi.
Ivalvu yomhlaba iphansi ngaphakathi nangaphandle, futhi ngaphandle kunezipayipi ezisobala ezingekho ezingeni lesigaba. I-gate valve runner isemugqeni ovundlile. Ukushaya kwevalvu yesango kukhulu kunokwevalvu yomhlaba.
Ngokombono wokumelana nokugeleza, ukumelana nokugeleza kwevalvu yesango kuncane uma ivuliwe ngokuphelele, kanti ukumelana nokugeleza kwevalvu yokumisa umthwalo kukhulu. I-coefficient yokumelana nokugeleza kwevalvu yesango evamile icishe ibe ngu-0.08 ~ 0.12, amandla okuvula nokuvala mancane, kanti i-medium ingageleza ngezindlela ezimbili. Ukumelana nokugeleza kwamavalvu avamile okuvala kuphindwe kathathu-kahlanu kunokwamavalvu esango. Lapho kuvulwa futhi kuvalwa, kuyadingeka ukuphoqa ukuvalwa ukuze kufezwe uphawu, i-valve spool yevalvu yembulunga ithintana kuphela nobuso bokuvala lapho ivaliwe ngokuphelele, ngakho-ke ukuguguleka kobuso bokuvala kuncane kakhulu, ngoba ukugeleza kwamandla amakhulu kudinga ukwengeza i-actuator. Ivalvu yembulunga kufanele inake ukulungiswa kwendlela yokulawula i-torque.
I-globe valve inezindlela ezimbili zokufaka, enye ukuthi i-medium ingangena ngaphansi kwe-valve spool, inzuzo ukuthi uma i-valve ivaliwe, ukupakisha akucindezelwa, impilo yenkonzo yokupakisha ingandiswa, futhi umsebenzi wokufaka esikhundleni ungenziwa ngaphansi kwengcindezi epayipini eliphambi kwe-valve; ububi ukuthi i-torque yokushayela ye-valve inkulu, cishe ngokuphindwe kanye kunokugeleza okuphezulu, futhi amandla e-axial e-valve stem makhulu, futhi i-valve stem kulula ukuyigoba.
Ngakho-ke, le ndlela ngokuvamile ifaneleka kuphela kuma-globe valves amancane (DN50 noma ngaphansi), futhi ama-globe valves angaphezu kwe-DN200 akhethwa ngendlela yokuthi i-media igeleze isuka phezulu. (Ama-valve okuvala ugesi ngokuvamile asebenzisa i-medium ukuze angene evela phezulu.) Ububi bendlela i-media engena ngayo isuka phezulu buphambene kakhulu nendlela engena ngayo ngezansi.
- Ukuvala
Ubuso bokuvala ivalvu yomhlaba buyicala elincane le-trapezoidal le-core valve (bheka ngqo ukuma kwe-core valve), uma i-core valve iwela, ilingana nokuvala ivalvu (uma umehluko wokucindezela mkhulu, vele, ukuvala akuqinile, kodwa umphumela ophambene awumubi), ivalvu yesango ivalwe eceleni kwepuleti yesango le-core valve, umphumela wokuvala awumuhle njengevalvu ye-globe, futhi i-core valve ngeke iwele njengevalvu ye-globe.
Isikhathi sokuthunyelwe: Ephreli-01-2022
