Umahluko phakathi kweVavelu eNgqo kunye nePilot-Operated
2024-03-14Imigaqo yeevalvu ezisebenza ngolingo kunye neevalve ezisebenza ngokuthe ngqo
Iivalvu eziqhutywa ngumqhubi wenqwelomoyakunye neevalvu ezisebenza ngokuthe ngqo zizivalo eziqhelekileyo zokulawula uxinzelelo. Ziyahluka kwindlela i-spool yokulawula ehamba ngayo.
Iivalve eziqhutywa ngumqhubi wenqwelomoya zikholisa ukongeza umngxuma wokulingwa ojikeleze undoqo wevalve. Xa i-core valve core iyasuswa, ukuhanjiswa koxinzelelo kwi-pilot hole kuya kutshintshwa. Ngeli xesha, i-medium ingena okanye ikhutshwe kwigumbi lokulawula nge-pilot hole, ngaloo ndlela iguqule uxinzelelo lwegumbi lokulawula. Ukulawula ukuvulwa kunye nokuvalwa kwevalve.
Iivalve ezisebenza ngokuthe ngqo zilungelelanisa ukuhamba kwe-medium ngokulawula indawo ye-valve core. Xa i-spool yokulawula ihamba, ukuvulwa kwevalve kuya kutshintsha ngokufanelekileyo.
Izinto eziluncedo kunye nezingeloncedo kwiivalvu eziqhutywa ngulingo kunye neevalvu ezisebenza ngokuthe ngqo
1. Ivalve esebenzayo yokulingwa
Iivalvu eziqhutywa ngumqhubi wenqwelomoya zisebenzisa umngxuma wokulinga ukwenza ivalve ibe novakalelo kwaye ikhawuleze kutshintsho oluphakathi. Ngoko ke, iivalve eziqhutywa ngumqhubi we-pilot zifanelekile kwiimeko apho kufuneka impendulo ngokukhawuleza kwiinguqu kwimidiya. Ukongezelela, i-valve eqhutywe ngumqhubi inokuchaneka kokulawula okuphezulu kwaye inokunciphisa ngokufanelekileyo i-amplitude yokutshintsha koxinzelelo oluphakathi.
Nangona kunjalo, ngenxa yobukho bomngxuma wokulingwa, ivalve yokulinga isebenza ngokungazinzi xa umahluko woxinzelelo uphantsi kwaye ulungele ukutshixa. Ukongezelela, phantsi kweqondo lokushisa eliphezulu kunye neendaba eziphezulu ze-viscosity, umgodi womqhubi uvalwe ngokulula, uchaphazela ukusebenza okuqhelekileyo kwe-valve.
2. Ivalve ebambeleyo ngokuthe ngqo
Iivalvu ezisebenza ngokuthe ngqo azinayo imingxunya yokulinga, ngoko ke akukho nto itshixayo yeevalvu ezisebenza ngolingo. Ngaphezu koko, iivalve ezisebenza ngokuthe ngqo zizinzile phantsi kobushushu obuphezulu kunye ne-high-viscosity media.
Nangona kunjalo, xa kuthelekiswa ne-pilot-operated valves, iivalve ezisebenza ngokuthe ngqo zinesantya sokuphendula esicothayo kunye nokuchaneka kokulawula okuphantsi. Ukongezelela, iivalve ezisebenza ngokuthe ngqo ziya kuvelisa inani elithile le-valve core vibration kunye nengxolo ngexesha lokusebenza, eliya kuchaphazela umphumo wokusetyenziswa.
Ukuqukumbela, zombini iivalve eziqhutywa ngumqhubi kunye neevalve ezisebenza ngokuthe ngqo zineenzuzo ezahlukeneyo kunye nokungalunganga. Ukhetho phakathi kwezi ntlobo zimbini ze-valve zixhomekeke kwiimfuno ezithile zesicelo, kubandakanywa nesidingo sokuphendula ngokukhawuleza, ukuchaneka kokulawula, ukuzinza phantsi kweemeko ezahlukeneyo zeendaba, kunye nokunyamezela ukungcangcazela kunye nengxolo. Ngokuqonda imigaqo kunye neempawu zohlobo ngalunye lwe-valve, iinjineli kunye nabaqulunqi benkqubo banokwenza izigqibo ezinolwazi ukuqinisekisa ukusebenza kakuhle kwiindawo ezahlukeneyo zoshishino kunye nezorhwebo.
