Zeziphi iindidi zeevalufa zokutshekisha?

Njengesixhobo esiphambili sokuthintela ukubuyela umva okuphakathi,khangela iivalvezisetyenziswa ngokubanzi kwiinkqubo zemibhobho. Ngokwezakhiwo ezahlukeneyo kunye nemigaqo yokusebenza, iivalve zokukhangela zahlulwe ikakhulu kwezi ndidi zilandelayo:

1. Ivalve yokujonga ujingi

Ivalve yokukhangela ejikelezayo ivula kwaye ivale ngokujikeleza idiski yevalve kwi-axis esisigxina. Xa i-medium ihamba phambili, i-disc yevalve iyatyhilwa ivuleke; Xa ubuyela umva, i-disc yevalve ivala phantsi kobunzima bayo kunye namandla okuphendula okuphakathi. Izibonelelo zayo ziphantsi kokumelana nokuhamba, ukuvulwa ngokukhawuleza kunye nokuvala, okufanelekileyo kububanzi obukhulu, iimeko zezinga lokuhamba okuphantsi ezifana neendawo zokupompoza okanye iipayipi ezinqamlekileyo. Nangona kunjalo, isiphumo sehamile samanzi sinokuthi senzeke ngexesha lokuhamba ngesantya esiphezulu, kwaye isixhobo se-buffer siyafuneka.

2. Phakamisa ivalve yokukhangela

Idiskhi yevalve yeliftkhangela ivalveihamba nge-axis ethe nkqo yomzimba wevalvu. Xa uhamba phambili, uxinzelelo oluphakathi lutyhala i-disc valve phezulu; Xa ubuyela umva, i-disc ye-valve iwela phantsi kwesenzo sobunzima okanye amandla entwasahlobo, ukusika okuphakathi. Olu hlobo lwevalve yokukhangela lusebenza kakuhle ukutywinwa, kodwa ukuchasana nokuhamba okuphezulu, kwaye isetyenziswa kakhulu kwi-caliber encinci, i-high-pressure, okanye izicelo ezifakwe ngokuthe nkqo, ezifana neenkqubo ze-steam.

3. Ivalve yokukhangela ibhabhathane

Ivalve yokukhangela ibhabhathane idibanisa iimpawu zeevalvu ezijikelezayo kunye nebhabhathane, kunye nediski ejikelezayo ejikeleza i-axis esembindini. Inesakhiwo esincinci kunye nobunzima obulula, obufanelekileyo kwimibhobho emikhulu kunye noxinzelelo oluphantsi, kwaye isetyenziswa ngokuqhelekileyo kunikezelo lwamanzi kunye nobunjineli bokuhambisa amanzi. Kodwa ukutywinwa kubuthathaka kwaye kufuna ukulungiswa rhoqo.

4. Ivalve yokujonga i-diaphragm

Iivalvu zokujonga i-diaphragm zisebenzisa i-elastic deformation ye-diaphragms yerabha ukulawula ukuvula nokuvalwa. Xa i-medium ihamba phambili, i-diaphragm yolulwa ivulekile; Xa ubuyela umva, i-diaphragm iyajikela ukuze itywine ijelo. Olu hlobo lwe-valve yokutshekisha alukho ukungqubuzana komatshini kunye nobomi benkonzo ende, kodwa ukushisa kwayo kunye nokunyanzeliswa koxinzelelo kuncinci, kwaye isetyenziselwa ukucoca imidiya okanye iinkqubo eziphantsi koxinzelelo.

5. Ivalve yokujonga ipiston

Ivalve yokujonga ipiston ivula kwaye ivale ngentsebenziswano yepiston kunye nentwasahlobo. Uxinzelelo oluphakathi luwoyisa amandla entwasahlobo ukutyhala ipiston ukuba ihambe, kwaye intwasahlobo iyabuya kwaye ivale xa ibuyela umva. Inomsebenzi wokutywina ogqwesileyo kwaye ifanelekile kwiqondo lokushisa eliphezulu kunye neendawo eziphakamileyo zoxinzelelo, ezifana neshishini le-petrochemical, kodwa isakhiwo sayo sinzima kwaye iindleko ziphezulu.

Iimeko ezisebenzayo zeentlobo ezahlukeneyo zekhangela iivalvekufuneka ikhethwe ngokubanzi ngokusekelwe kwiimpawu ze-medium, uxinzelelo, izinga lokuhamba, kunye neemeko zofakelo zokuqinisekisa ukusebenza ngokukhuselekileyo kunye nokusebenza kakuhle kwenkqubo.