I-valve uvemvane yomugqa ophakathi ingenye yezingxenye ezibalulekile ezivame ukusetshenziswa ezinhlelweni zokulawula uketshezi lwezimboni. Ekusetshenzisweni, ukuze kuqinisekiswe ukwethembeka nokuphepha kwesistimu, kubaluleke kakhulu ukukhetha izinto ezifanele zokuvala uphawu. Lesi sihloko sizokwethula ukukhethwa kwezinto zokuvala kanye nezinto ezivame ukusetshenziswa ze-valve butterfly yomugqa ophakathi ukuze kuthuthukiswe ukwethembeka kwesistimu.
Ukukhethwa kwezinto ezifanele zokuvala i-valve yevemvane yomugqa ophakathi kudinga ukucabangela izici ezilandelayo: uhlobo oluphakathi nendawo, izinga lokushisa, izidingo zokucindezela kanye nezakhiwo eziwuketshezi. Izimo zokusebenza ezihlukene zinezidingo ezihlukene zezinto zokuvala, ngakho lezi zici kufanele zicatshangelwe ngokucophelela lapho kukhethwa izinto.
Okokuqala, uhlobo lwemidiya lungenye yezinto ezibalulekile ezithinta ukukhethwa kwezinto zokuvala uphawu. Imidiya ehlukene inezinto zamakhemikhali ezihlukene, njenge-asidi ne-alkali, ukugqwala kanye nobuthi. Izinto ezivamile zokuvala zihlanganisa irabha, ama-polymers, izinsimbi kanye ne-ceramics. Kwemithombo yezindaba ebolayo, kungakhethwa i-asidi ne-alkali ukumelana ne-polymer okufana ne-polytetrafluoroethylene (PTFE) ne-polypropylene (PP). Kwabezindaba zokushisa okuphezulu, izinto zokuvala zensimbi ezifana nensimbi engagqwali ziyisinqumo esingcono.
Okwesibili, izinga lokushisa liphinde libe yisici esidinga ukucatshangelwa lapho kukhethwa izinto ezifanele zokuvala. Izinto ezihlukene zinokuvumelana nezimo lokushisa okuhlukile. Isibonelo, izinto ezivamile zokuvala irabha zizoguga futhi zibe nzima emazingeni okushisa aphezulu, ngakho-ke izimo zokushisa eziphakeme, izinto eziphikisana nokushisa okuphezulu njenge-graphite nensimbi kufanele zikhethwe.
Izidingo zokucindezela zingesinye isici okufanele sicatshangelwe. Ngaphansi kwezimo zokucindezela okuphezulu, izinto zokuvala uphawu zidinga ukusebenza okuphezulu nokuqina. Izinto zokubeka uphawu zensimbi ngokuvamile zinezakhiwo ezinhle zokucindezela futhi zifanele izinhlelo zokucindezela okuphezulu. Ngesikhathi esifanayo, ukuqina nokuqina kwezinto zokuvala kuzophinde kuthinte ukusebenza kwayo kokuvala, ngakho-ke kuyadingeka ukukhetha into enokwethenjelwa okuhle nokuqina.
Okokugcina, izakhiwo eziwuketshezi zidinga ukucatshangelwa. Olunye uketshezi lune-viscosity ephezulu noma i-granular matter, futhi ukulahlekelwa kwezinto zokuvala kukhulu. Kulokhu, izinto ezikwazi ukumelana nokugqoka nokugqwala, njenge-polyurethane ne-rubber assemblies, zidinga ukukhethwa.
Kafushane, ukukhethwa kwezinto zokuvala zevalve yevemvane yomugqa ophakathi kudinga ukucabangela izici ezifana nohlobo oluphakathi, izinga lokushisa, izidingo zokucindezela kanye nezakhiwo eziwuketshezi. Ukukhethwa kwezinto ezifanele zokuvala uphawu kungathuthukisa ngokuphumelelayo ukuthembeka nokuphepha kwesistimu futhi kwandise impilo yesevisi ye-valve butterfly. Okokugcina, kunconywa ukuthi uxhumane nonjiniyela abangochwepheshe noma ochwepheshe abafanelekile lapho ukhetha izinto zokuvala ukuze uqinisekise ukuthi izinto ezikhethiwe zihlangabezana nezimo zangempela zokusebenza.
Ivalve uvemvane yomugqa ophakathi
Isikhathi sokuthumela: Jul-25-2023
