Amavalvu asebenza ngomshayeli (ama-POV) awuhlobo lwamavalvu okulawula asebenzisa ivalvu encane, esiza (umshayeli) ukuze alawule ukugeleza koketshezi ngevalvu eyinhloko enkulu. I-valve yokushayela, esetshenziswa isignali yokucindezela noma okunye okokufaka, ilawula indawo ye-spool ye-valve eyinhloko noma i-piston. Le ndlela yokulawula engaqondile inikeza izinzuzo ezimbalwa, okuhlanganisa ukulawula okunembile, ukuzwela okukhulayo, kanye nekhono lokusingatha amazinga okugeleza aphezulu.
1.I-Pilot Valve Activation:Isignali yokucindezela, isignali kagesi, noma okokufaka komshini kwenza i-valve yokushayela isebenze.
2.I-Pilot Valve Ilawula Ivavu Eyinhloko:Ukunyakaza kwevalvu yokushayela kulungisa ukugeleza koketshezi ku-diaphragm noma i-piston kuvalvu eyinhloko.
3.Indawo Yevaluvu Eyinhloko:Umehluko wokucindezela owenziwe i-valve yomshayeli ubangela ukuthi i-valve eyinhloko ivuleke noma ivale, ilawule ukugeleza komfudlana oyinhloko woketshezi.
• Ukulawula Okunembile:Amavalvu asebenza ngomshayeli anikeza ukulawula okucushwe kahle kokugeleza koketshezi, okuwenza alungele izinhlelo zokusebenza ezidinga ukulawulwa okunembile.
• Amazinga Okugeleza Okuphezulu:Lawa ma-valve angakwazi ukuphatha amazinga okugeleza aphezulu ngenkathi egcina ukulawula okunembayo.
• Ukusebenza kwesilawuli kude:Ama-valve asebenza ngomshayeli angalawulwa ukude kusetshenziswa amasiginali wokufaka ahlukahlukene, okuvumela ukuzenzela nokuhlanganiswa ezinhlelweni ezinkulu zokulawula.
• Ukuzwela Okungeziwe:Ama-valve asebenza ngomshayeli azwela kakhulu ezinguqukweni zezimpawu zokufaka, okuvumela izikhathi zokuphendula ngokushesha.
• Izici zokuphepha:Amavalvu amaningi asebenza ngomshayeli ahlanganisa izici zokuphepha njengezindlela ezihlulekayo ukuvikela izimo eziyingozi.
Ama-valve asebenza ngomshayeli athola ukusetshenziswa okukhulu ezimbonini ezihlukahlukene, okuhlanganisa:
• Amasistimu Amanzi:
° Ukulawula amasilinda amanzi ukuze abekwe kahle
° Ukulawula ingcindezi kumasekethe we-hydraulic
° Ukwenza imisebenzi eyinkimbinkimbi yokulandelanisa
• Amasistimu Womoya:
° Ukulawula ama-actuator womoya wemisebenzi ye-automation
° Ukulawula ukucindezela komoya kumasekhethi womoya
• Ukulawula Inqubo:
° Ukulawula amazinga okugeleza ezinqubweni zamakhemikhali
° Ukulawula ingcindezi kumapayipi
° Ukugcina izinga lokushisa ezinqubweni zezimboni
Ukuze uqedele ngempumelelo I-Exercise 4-1, cabangela le misebenzi elandelayo kanye nezici:
• Khomba Izingxenye:Zijwayeze nezingxenye ezihlukahlukene zevalvu esebenza umshayeli, okuhlanganisa ivalvu yokushayela, ivalve eyinhloko, namaphaseji axhumayo.
• Qonda Umgomo Wokusebenza:Bamba izimiso eziyisisekelo zokuthi ukuhluka kwengcindezi nokugeleza koketshezi kuhlangana kanjani ukuze ulawule i-valve eyinhloko.
• Hlaziya Izinhlobo Ezihlukene:Hlola izinhlobo ezahlukahlukene zamavalvu asebenza ngomshayeli, njengamavaluvu anxeshezelwa ngomfutho, alawulwa ukugeleza, kanye namavalvu asebenza ngogesi.
• Cabangela Izicelo:Cabanga ngezinhlelo zokusebenza ezithile lapho ama-valve asebenza ngomshayeli angaba nenzuzo nokuthi angathuthukisa kanjani ukusebenza kwesistimu.
Dala i-Control Circuit:Dala i-hydraulic noma i-pneumatic circuit elula ehlanganisa i-valve esebenza ngomshayeli ukuze ulawule inqubo ethile noma umsebenzi.
• I-valve esebenza ngomshayeli ihluke kanjani ku-valve esebenza ngokuqondile?
• Yiziphi izinzuzo zokusebenzisa ivalvu esebenza ngomshayeli ohlelweni lwamanzi?
• Yakha isiyingi se-valve esisebenza ngomshayeli ukuze ulawule isivinini se-hydraulic cylinder.
• Chaza ukuthi i-valve yokusiza eqhutshwa umshayeli isebenza kanjani kanye nendima yayo ezinhlelweni zokuphepha.
• Xoxa ngezinto ezinomthelela ekukhethweni kwevalvu esebenza umshayeli wohlelo oluthile.
Ngokuqedela I-Exercise 4-1, uzothola ukuqonda okuqinile kwezimiso, izinhlelo zokusebenza, kanye nezinzuzo zamavalvu asebenza ngomshayeli. Lolu lwazi luzokunika amandla okuklama nokusebenzisa amasistimu okulawula asebenzayo kuzilungiselelo ezahlukahlukene zezimboni.
Qaphela:Ukuze unikeze impendulo eqondene nawe, sicela unikeze imininingwane eyengeziwe mayelana nezimfuneko ezithile zomsebenzi wakho, njenge:
• Uhlobo loketshezi olulawulwayo (uwoyela we-hydraulic, umoya, njll.)
• Izinga lokulawula elifunekayo (ukuvula/ukuvala, ukulinganisa, njll.)
• Noma yiziphi izithiyo noma imikhawulo ethile
Ngalolu lwazi, nginganikeza isiqondiso esiqondiswe kakhulu nezibonelo.