Ngawo-1930,ivalvu yebhabhathaneYasungulwa e-United States, yethulwa eJapan ngawo-50s, futhi yasetshenziswa kabanzi eJapan ngawo-60s, futhi yakhuthazwa eShayina ngemva kwawo-70s. Njengamanje, amavalvu ebhabhathane angaphezu kwe-DN300 mm emhlabeni ashintshe kancane kancane amavalvu esango. Uma kuqhathaniswaamavalvu esango, amavalvu ebhabhathane anesikhathi esifushane sokuvula nokuvala, i-torque encane yokusebenza, isikhala esincane sokufaka kanye nesisindo esincane. Uma sithatha i-DN1000 njengesibonelo, ivalvu yebhabhathane icishe ibe ngu-2T, kanti ivalvu yesango icishe ibe ngu-3.5T, futhi ivalvu yebhabhathane kulula ukuyihlanganisa namadivayisi ahlukahlukene okushayela, inokuqina okuhle nokuthembeka.
Ububi bophawu lwerabhaivalvu yebhabhathaneukuthi uma isetshenziselwa ukubhoboza, ukubhoboza kuzokwenzeka ngenxa yokusetshenziswa okungafanele, okuzobangela ukuthi isihlalo serabha siqhekeke futhi sonakale. Eminyakeni yamuva nje, iShayina iphinde yakha amavalvu e-butterfly avaliwe ngensimbi, kanti eminyakeni yamuva nje, iJapane iphinde yakha amavalvu e-butterfly amise okwe-comb anokumelana nokubhoboza, ukudlidliza okuphansi nomsindo ophansi.
Isikhathi senkonzo yesihlalo sokuvala esijwayelekile siyiminyaka eyi-15-20 yerabha kanye neminyaka engama-80-90 yensimbi ngaphansi kwezimo ezijwayelekile. Kodwa-ke, indlela yokukhetha kahle incike ezidingweni zezimo zokusebenza.
Ubudlelwano phakathi kokuvulwa kwe-ivalvu yebhabhathanefuthi izinga lokugeleza liqondile futhi lilingana. Uma lisetshenziswa ukulawula izinga lokugeleza, izici zalo zokugeleza nazo zihlobene eduze nokumelana nokugeleza kwamapayipi, njengokuthi ububanzi kanye nesimo samavalvu afakwe kumapayipi amabili kuyafana, kanye ne-coefficient yokulahlekelwa yipayipi ihlukile, futhi izinga lokugeleza kwevalvu lizohluka kakhulu.
Uma ivalvu isesimweni sokugoba okukhulu, ingemuva le-valve plate livame ukugoba, futhi kungenzeka ukuthi ilimaze ivalvu, ngakho-ke ngokuvamile isetshenziswa ngaphandle kwama-degrees angu-15.
Uma ivalvu yebhabhathane isesikhaleni esiphakathi, isimo sokuvuleka sakhiwe yi-ivalvuUmzimba kanye nengxenye engaphambili yepuleti le-butterfly kugxile ku-valve shaft, futhi izinhlangothi ezimbili zakha izimo ezahlukene, ingxenye engaphambili yepuleti le-butterfly ohlangothini olulodwa ihamba ngendlela yamanzi agelezayo, kanti olunye uhlangothi luhamba ngendlela amanzi agelezayo ahamba ngayo, ngakho-ke, umzimba we-valve ohlangothini olulodwa kanye nepuleti le-valve kwakha ukuvulwa okufana nomlomo, kanti olunye uhlangothi lufana nokuvulwa okufana nomgodi we-throttle, uhlangothi lwe-nozzle lushesha kakhulu kunohlangothi lwe-throttle, futhi ingcindezi engemihle izokhiqizwa ngaphansi kwe-valve eseceleni kwe-throttle, futhi uphawu lwerabha luvame ukuwa.
I-torque yokusebenza ye-butterfly valve, ngenxa yokuvula nokuvula okuhlukile kwe-valve, inani layo lihlukile, futhi i-valve ye-butterfly evundlile, ikakhulukazi i-valve enobubanzi obukhulu, ngenxa yokujula kwamanzi, i-torque ekhiqizwa umehluko phakathi kwekhanda eliphezulu nelingaphansi le-shaft ye-valve ayinakunakwa. Ngaphezu kwalokho, lapho kufakwa indololwane ohlangothini lokungena lwe-valve, kwakheka ukugeleza kokuphambuka, futhi i-torque iyanda. Lapho i-valve isendaweni ephakathi nendawo, indlela yokusebenza idinga ukuzikhiya ngenxa yesenzo se-torque yokugeleza kwamanzi.
Isikhathi sokuthunyelwe: Agasti-22-2024
