Belofo ea hekeke sehlahisoa sa phetoho ea indasteri.Leha meralo e meng ea li-valve, joalo ka li-valve tsa globe le li-plug valves, e bile teng ka nako e telele, li-valve tsa heke li nkile boemo bo ka sehloohong indastering ka lilemo tse mashome, 'me haufinyane tjena li fane ka karolo e kholo ea' maraka ho li-valve tsa bolo le meralo ea serurubele. .

Phapang pakeng tsa valve ea heke le valve ea bolo, valve ea plug le valve ea serurubele ke hore ntho e koalang, e bitsoang disc, gate kapa occluder, e phahama ka tlaase ho stem kapa spindle, e tloha tseleng ea metsi ebe e kena ka holim'a valve, e bitsoang bonnet, le ho bilika ka hare ho seluloana kapa ho ohla ka makgetlo a mangata.Li-valve tsena tse bulehang ka ho sisinyeha ha melapo li boetse li tsejoa e le li-valve tse ngata tse fetohang kapa tse nang le linear, ho fapana le li-quarter turn valves, tse nang le kutu e potolohang ka likhato tse 90 'me hangata e sa phahama.

Li-valve tsa heke li fumaneha ka lisebelisoa tse ngata tse fapaneng le litekanyetso tsa khatello.Li fapana ka boholo ho tloha ho NPS e lekanang letsoho la hau ½ Inch ho isa terakeng e kholo ea NPS 144 inch.Li-valve tsa heke li na le li-castings, forgings, kapa likarolo tse entsoeng ka welding, leha moralo oa ho lahla o laola.

E 'ngoe ea lintho tse lakatsehang ka ho fetisisa tsa li-valve tsa heke ke hore li ka buloa ka ho feletseng ka tšitiso e nyenyane kapa likhohlano likoti tsa phallo.Ho hanyetsa ho phalla ho fanoang ke valve ea heke e bulehileng ho batla ho tšoana le karolo ea phala e nang le boholo bo lekanang ba koung.Ka hona, li-valve tsa heke li ntse li nahanoa ka matla bakeng sa ho thibela kapa ho tima / ho tima lits'ebetso.Ka mantsoe a mang a li-valve, li-valve tsa heke li bitsoa li-valve tsa globe.

Li-valve tsa heke hangata ha li tšoanelehe bakeng sa ho laola phallo kapa ho sebetsa ka tsela efe kapa efe ntle le ho koaloa ka botlalo kapa ho koala ka botlalo.Ho sebelisa valve ea heke e butsoitseng hanyenyane ho thethefatsa kapa ho laola phallo ho ka senya poleiti ea valve kapa selikalikoe sa setulo sa valve, hobane tikolohong e bulehileng hanyenyane e bakang moferefere, libaka tsa setulo sa valve li tla thulana.

Mokhoa oa li-valve tsa heke

Ho tloha ka ntle, li-valve tse ngata tsa heke li shebahala li tšoana.Leha ho le joalo, ho na le menyetla e mengata e fapaneng ea moralo.Li-valve tse ngata tsa heke li na le 'mele le bonete, e nang le ntho e koalang e bitsoang disc kapa heke.Ntho e koalang e hokahane le kutu e fetang ka bonneteng ebe qetellong e ea lebiling la letsoho kapa koloi e 'ngoe ho tsamaisa kutu.Khatello e potolohileng kutu ea valve e laoloa ke ho patoa ho hatelloa sebakeng sa ho paka kapa kamoreng.

Ho sisinyeha ha poleiti ea liheke holim'a kutu ea valve ho etsa qeto ea hore na kutu ea valve e ea phahama kapa ea ho khoaela poleiti ea valve nakong ea ho bula.Boitšoaro bona bo boetse bo hlalosa mekhoa e 'meli e meholo ea stem/disc bakeng sa li-valve tsa heke: kutu e phahamang kapa kutu e sa phahamang (NRS).Kutu e ntseng e phahama ke setaele se tsebahalang haholo sa meralo ea li-stem/disc 'marakeng oa indasteri, athe kutu e sa phahamang esale e ratoa ke indasteri ea metsi le lipeipi.Lisebelisoa tse ling tsa likepe tse ntseng li sebelisa li-valve tsa heke 'me li na le libaka tse nyane li boetse li sebelisa mokhoa oa NRS.

Moralo o atileng haholo oa kutu / bonnet ho li-valve tsa indasteri ke khoele ea kantle le joko (OS&Y).Moralo oa OS&Y o loketse haholo tikolohong e senyang hobane likhoele li fumaneha kantle ho sebaka sa mokelikeli oa tiiso.E fapane le meralo e meng ka hore lebili la letsoho le khomaretsoe ho bushing ka holim'a joko, eseng ho kutu ka boeona, e le hore lebili la letsoho le se ke la phahama ha valve e bulehile.

Karohano ea 'maraka oa li-valve tsa heke

Leha lilemong tse 50 tse fetileng, li-valve tsa rotary angle li nkile karolo e kholo 'marakeng oa li-valve tsa heke, liindasteri tse ling li ntse li itšetlehile haholo ka tsona, ho kenyeletsoa indasteri ea oli le khase.Le hoja li-valve tsa bolo li se li hatetse pele liphaepheng tsa khase ea tlhaho, lipeipi tsa oli e tala kapa tsa metsi e ntse e le sebaka sa li-valve tsa heke tse lutseng tse bapileng.

Tabeng ea boholo bo boholo, li-valve tsa heke e ntse e le khetho e ka sehloohong bakeng sa mekhoa e mengata ea indasteri ea ho hloekisa.Ho tiea ha moralo le litšenyehelo tse felletseng tsa beng (ho kenyeletsoa moruo oa tlhokomelo) ke lintlha tse lakatsehang tsa moralo ona oa setso.

Mabapi le ts'ebeliso, mekhoa e mengata ea ho hloekisa e sebelisa mocheso o phahameng ho feta mocheso o sireletsehileng oa ts'ebetso oa Teflon, e leng thepa e ka sehloohong ea li-valve tsa bolo e phaphametseng.Li-valve tsa serurubele tse sebetsang hantle haholo le li-valve tsa bolo tse tiisitsoeng ka tšepe li se li qala ho sebelisoa haholo lits'ebetsong tsa ho hloekisoa, le hoja litšenyehelo tsa tsona tsa botho hangata li phahame ho feta tsa li-valve tsa heke.

Indasteri ea limela tsa metsi e ntse e laoloa ke li-valve tsa heke ea tšepe.Le lits'ebetsong tse patiloeng, li batla li le theko e tlase ebile lia tšoarella.

Indasteri ea motlakase e sebelisoali-valve tsa heke ea alloybakeng sa lits'ebetso tse kenyelletsang likhatello tse phahameng haholo le mocheso o phahameng haholo.Leha li-valve tse ncha tsa mofuta oa Y-globe le li-valve tsa tšepe tse lutseng ka tšepe tse etselitsoeng ho thibela ts'ebeletso li fumanoe setsing sa motlakase, li-valve tsa liheke li ntse li ratoa ke baetsi ba limela le basebelisi.