Ngezinga elithile, i-globe valve kanye ne-gate valve kungathiwa kunezixhumanisi eziningi. Kungashiwo yini ukuthi i-globe valve kanye ne-gate valve kungaxutshwa ngempela? I-Shanghai Dongbao Valve Manufacturing Co., Ltd. ilapha ukuzokuphendula lo mbuzo.

1. Isakhiwo
Uma isikhala sokufaka silinganiselwe, sicela uqaphele ukukhetha:
Iivalvu yesangoingavalwa ngokuqinile ngomphezulu wokuvala kuye ngokucindezela okuphakathi, ukuze kufezwe umphumela wokungavuzi. Lapho kuvulwa futhi kuvalwa, umongo wevalvu kanye nomphezulu wokuvala isihlalo sevalvu zihlala zithintana futhi zigudlana, ngakho-ke umphezulu wokuvala kulula ukuwugqoka. Uma ivalvu yesango iseduze nokuvala, umehluko wokucindezela phakathi kwangaphambili nangemuva kwepayipi mkhulu, okwenza umphezulu wokuvala ugqoke kakhulu.
Isakhiwo sevalvu yesango sizoba yinkimbinkimbi kakhulu kunevalvu yokuvala. Ngokombono wokubukeka, ivalvu yesango inde kunevalvu yokuvala kanti ivalvu yokuvala inde kunevalvu yesango uma kunesidingo esifanayo. Ngaphezu kwalokho, ivalvu yesango ingahlukaniswa ibe yinduku ekhanyayo kanye nenduku emnyama. Ivalvu yokuvala ayihlukani.
2. Isimiso sokusebenza
Uma ivalvu yokuvala ivuliwe futhi ivaliwe, isiqu siyaphakama, okungukuthi, uma isondo lesandla liphendulwa, isondo lesandla lizojikeleza futhi liphakanyiswe kanye nesiqu. Ivalvu yesango ijikeleza isondo lesandla ukuze isiqu sevalvu sihambe phezulu naphansi, futhi indawo yesondo lesandla ayishintshi.
Izinga lokugeleza lihlukile, ivalvu yesango kudingeka ivuleke ngokuphelele noma ivalwe ngokuphelele, kodwa ivalvu yokuma ayidingeki. Ivalvu yokuvala ineziqondiso ezithile zokungena kanye nezokuphuma, futhi ivalvu yesango ayinazo izidingo zokungena kanye nezokuphuma.
Ngaphezu kwalokho, ivalvu yesango inezimo ezimbili kuphela: ivuliwe ngokuphelele noma ivaliwe ngokuphelele, i-stroke yokuvula nokuvala isango inkulu, futhi isikhathi sokuvula nokuvala side. I-stroke yokunyakaza kwepuleti yevalvu yevalvu yokuvala incane kakhulu, futhi ipuleti yevalvu yevalvu yokuvala ingamiswa endaweni ethile ngesikhathi sokunyakaza ukuze kulungiswe ukugeleza. Ivalvu yesango ingasetshenziswa kuphela ukusika, futhi ayinayo eminye imisebenzi.
3. Umehluko wokusebenza
Ivalvu yokuvala ingasetshenziswa ukulungisa ukunqamula nokugeleza. Ukumelana koketshezi kwevalvu yomhlaba kukhulu kakhulu, futhi kunzima kakhulu ukuyivula nokuvala, kodwa ngenxa yokuthi ibanga eliphakathi kwepuleti levalvu nendawo yokuvala lifushane, ukushaywa kokuvula nokuvala kufushane.
Ngobaivalvu yesangoingavulwa ngokugcwele futhi ivalwe ngokuphelele kuphela, uma ivulwe ngokugcwele, ukumelana kokugeleza okuphakathi emgodini womzimba wevalvu cishe ku-zero, ngakho-ke ukuvulwa nokuvalwa kwevalvu yesango kuzosindisa kakhulu abasebenzi, kodwa isango likude kakhulu nobuso bokuvala futhi isikhathi sokuvula nokuvala side.
4. Ukufakwa kanye nokugeleza
Umphumela wevalvu yesango kuzo zombili izinhlangothi uyafana. Akukho mfuneko yemiyalelo yokungena kanye neyokuphuma yokufaka, futhi i-medium ingajikeleza kuzo zombili izinhlangothi. Ivalvu yokuvala idinga ukufakwa ngokuhambisana ngqo nesiqondiso sophawu lomcibisholo emzimbeni wevalvu. Kukhona futhi nomthetho ocacile mayelana nesiqondiso sokungena kanye nesokuphuma sevalvu yokuvala. Ivalvu yezwe lami ethi “Sanhua” ibeka ukuthi isiqondiso sokugeleza kwevalvu yokuvala kufanele sibe kusukela phezulu kuya phansi.
Ivalvu yokuvala iphansi ngaphakathi nangaphandle. Uma ubheka ngaphandle, kusobala ukuthi ipayipi alikho emgqeni ovundlile wesigaba esisodwa. Indlela yokugeleza kwevalvu yesango isemgqeni ovundlile. Ukushaya kwevalvu yesango kukhulu kunokwevalvu yokuma.
Ngokombono wokumelana nokugeleza, ukumelana nokugeleza kwevalvu yesango kuncane uma ivuliwe ngokugcwele, kanti ukumelana nokugeleza kwevalvu yokumisa umthwalo kukhulu. Isilinganiso sokumelana nokugeleza kwevalvu yesango evamile singaba ngu-0.08 ~ 0.12, amandla okuvula nokuvala mancane, kanti i-medium ingageleza ngezindlela ezimbili.
Ukumelana nokugeleza kwamavalvu avamile okuvala kuphindwe kathathu kuya kahlanu kunokwamavalvu esango. Lapho kuvulwa futhi kuvalwa, kudinga ukuphoqelelwa ukuthi kuvalwe ukuze kufezwe uphawu. Ingaphakathi levalvu yevalvu yokumisa alithinti indawo yokuvala uma ivaliwe ngokuphelele, ngakho-ke ukuguguleka kwendawo yokuvala kuncane kakhulu. Ivalvu yokumisa edinga ukwengeza i-actuator ngenxa yamandla amakhulu okugeleza kufanele inake indlela yokulawula i-torque. Ukulungiswa.
Uma ivalvu yokuvala ifakiwe, i-medium ingangena isuka ngaphansi kwe-valve core futhi ingene isuka phezulu ngezindlela ezimbili.
Inzuzo yendlela yokungena evela ngaphansi kwe-valve core ukuthi ukupakisha akucindezelwa lapho i-valve ivaliwe, okungandisa isikhathi sokuphila kwenkonzo yokupakisha, futhi kungathatha indawo yokupakisha lapho ipayipi eliphambi kwe-valve licindezelwa.
Ububi bokungena kwe-medium kusuka phansi kwe-valve core ukuthi i-torque yokushayela ye-valve inkulu kakhulu, cishe izikhathi eziyi-1.05 ~ 1.08 kuneyokungena okungenhla, i-valve stem ibhekene namandla amakhulu e-axial, futhi i-valve stem kulula ukuyigoba.
Ngenxa yalesi sizathu, indlela i-medium engena ngayo isuka ngezansi ngokuvamile ifaneleka kuphela kuma-valve okumisa anobubanzi obuncane (ngaphansi kwe-DN50). Kuma-valve okumisa angaphezu kwe-DN200, i-medium ingena isuka phezulu. I-valve yokuvala kagesi ngokuvamile isebenzisa indlela i-medium engena ngayo isuka phezulu.
Ububi bendlela i-medium engena ngayo isuka phezulu buphambene nendlela i-medium engena ngayo isuka phansi. Eqinisweni, ingageleza kuzo zombili izinhlangothi, uma nje ucabangela imibono ehlukene.
5. Uphawu
Ubuso bokuvala bomhlabaivalvukuyicala elincane le-trapezoidal le-valve core (bheka ukuma kwe-valve core ukuthola imininingwane). Uma i-valve core iwela, kufana nokuvala i-valve (uma umehluko wokucindezela mkhulu, vele ukuvala akuqinile, kodwa umphumela wokulwa nokuphenduka awumubi). I-valve yesango ivalwe eceleni kwepuleti yesango le-valve core, umphumela wokuvala awumuhle njenge-valve yokumisa, futhi i-valve core ngeke ivalwe njenge-valve yokumisa lapho i-valve core iwela.