1. Ukumelana noketshezi oluphansi.
2. Amandla angaphandle adingekayo ekuvuleni nasekuvaleni mancane.
3. Isiqondiso sokugeleza se-medium asiboshiwe.
4. Uma ivuleke ngokugcwele, ukuguguleka kwendawo yokuvala kusetshenziswa indawo yokusebenza kuncane kunaleyo yevalvu yokumisa.
5. Ukuqhathaniswa komumo kulula, futhi ubuchwepheshe bokusakaza buhle.
Ukungalungi kwe-valve yesango
1. Ubukhulu obuphelele nobude bokuvula kukhulu.Imishini idinga indawo enkulu.
2. Ngesikhathi sokuvula nokuvala, kukhona ukungqubuzana okuhlobene phakathi kwezindawo zokuvala, okubangela kafushane ukuklwebheka.
3. Ama-valve esango ngokuvamile anezindawo ezimbili zokuvala, okufaka ubunzima obuthile ekucubunguleni, ekugayeni nasekulungiseni.
Izinhlobo zama-valve esango
1. Ingahlukaniswa ngokuhlelwa kwenqama
1) I-valve yesango elihambisanayo: indawo yokuvala ihambisana nomugqa wesisekelo oqondile, okungukuthi, izindawo ezimbili zokuvala ziyahambisana.
Phakathi kwama-valve esango ahambisanayo, ukuhlela nge-thrust wedge kuvame kakhulu.Kukhona i-thrust wedge enamacala amabili esisekelweni samavalvu esango amabili.Lolu hlobo lwe-valve yesango lufanele ama-valve esango anengcindezi ephansi kanye nobubanzi obuncane (dn40-300mm).Kukhona nemithombo phakathi kwezinqama ezimbili, ezingasebenzisa amandla okuqinisa ngaphambili, asiza ekubekweni uphawu kwenqama.
2) I-valve yesango le-Wedge: indawo yokuvala yakha i-engeli enomugqa wesisekelo ome mpo, okungukuthi, izindawo ezimbili zokuvala zakha i-valve yesango emise okwenkawu.I-engeli ethambekele yendawo yokuvala ngokuvamile i-2 ° 52 ', 3 ° 30′, 5 °, 8 °, 10 °, njll. ubukhulu be-engeli ngokuyinhloko buncike ku-convex ye-convex yokushisa okuphakathi.Ngokuvamile, lapho izinga lokushisa liphakeme kakhulu, i-engeli kufanele ibe nkulu, ukuze kuncishiswe amathuba okushada lapho izinga lokushisa lishintshwa.Ku-valve yesango le-wedge, kukhona i-valve yesango elilodwa, i-valve yesango eliphindwe kabili kanye ne-valve yesango elinwebekayo.I-valve yesango le-wedge yesango elilodwa inokuhlela okulula nokusebenza okuthembekile, kodwa idinga ukunemba okuphezulu kwe-engeli yendawo yokubeka uphawu, okunzima ukuyicubungula nokulungisa, futhi ingahlanganiswa lapho izinga lokushisa lishintshwa.Ama-valve esango le-double wedge asetshenziswa kakhulu emanzini kanye namapayipi aphakathi kwesitimu.Izinzuzo zayo yilezi: ukunemba kwe-engeli yendawo yokuvala idinga ukuba ibe phansi, futhi ukuguquka kwezinga lokushisa akulula ukubangela indawo yokushada.Lapho indawo yokuvala isigqokile, ingagqitshwa ukuze kunxeshezelwe.Kodwa-ke, lolu hlobo lokuhlela lunezingxenye eziningi, okulula ukuzibopha ku-viscous medium futhi zithinte ukubekwa uphawu.Okubaluleke nakakhulu, ama-baffles aphezulu naphansi kulula ukugqwala ngemva kokusetshenziswa isikhathi eside, futhi inqama kulula ukuwa.I-valve yesango le-elastic wedge yesango, enokuhlelwa okulula kwe-valve yesango lesango elilodwa, ingakhiqiza inani elincane lokuguqulwa okunwebekayo ukunxephezela ukuchezuka ekucubunguleni i-engeli yendawo yokuvala futhi ithuthukise ubuchwepheshe ngokusebenzisa * izinzuzo, futhi ikhethwe ngabaningi.
2. Ngokusho kokuhlelwa kwesiqu se-valve, i-valve yesango ingahlukaniswa
1) I-valve yesango ye-stem ekhuphukayo: i-valve stem nut ikusembozo se-valve noma isisekelo.Lapho uvula futhi uvala isango, zungezisa inadi le-valve stem ukuze uqedele ukuphakamisa isiqu se-valve.Lolu hlobo lokuhlela lunenzuzo ekugcobeni kwenduku ye-valve, futhi idigri yokuvula nokuvala iyabonakala, ngakho-ke isetshenziswa kabanzi.
2) I-valve yesango ye-stem engavuki: i-valve stem nut isemzimbeni wevalvu futhi ithinta okuphakathi nendawo ngqo.Lapho uvula futhi uvala inqama, zungeza induku yevalvu.Inzuzo yalolu hlelo ukuthi ukuphakama kwe-valve yesango kuhlala kungashintshiwe, ngakho isikhala semishini sincane.Ifanele ama-valve esango ane-diameter enkulu noma isikhala semishini eboshiwe.Ukuhlela okunjalo kuzohlonyiswa ngezinkomba zokuvula nokuvala ezikhombisa izinga lokuvula nokuvala.Ukungalungi kwalolu hlelo ukuthi intambo ye-stem ayikwazi nje ukugcotshwa, kodwa futhi igugulwe ngokuqondile phakathi nendawo futhi yonakaliswe kancane.
Ububanzi be-valve yesango bufinyeziwe
Uma sicabanga ukuthi ububanzi besiteshi kumzimba we-valve buhlukile (imvamisa ububanzi besihlalo sevalvu buncane kunalolo ekuxhumekeni kwe-flange), kubizwa ngokuthi ukufinyeza kwendlela.
Ukunciphisa ububanzi bokukhukhuleka kunganciphisa usayizi wezingxenye namandla adingekayo ukuze uvule futhi uvale.Ndawonye, inganweba uhlelo lokusebenza lwezingxenye.
Ngemva kokunciphisa ububanzi be-drift.Ukumelana noketshezi kuyanda.
Isikhathi sokuthumela: May-09-2022