Uhlobo lwe-Valve-Cartridge yoNcedo
Iivalvu ezichaseneyo ezinoncedo lokulinga zenzelwe ukulawula umthwalo ogqithisileyo. Ivalve yokukhangela ivumela ukuhamba kwamahhala
ukusuka kwivalve yesalathiso (izibuko 2) ukuya kumthwalo (izibuko 1) ngelixa i-valve esebenza ngokuthe ngqo, i-pilot-assisted relief valve ilawula ukuhamba
ukusuka kwizibuko loku-1 ukuya kwizibuko 2. Uncedo lokulinga kwizibuko lesi-3 lwehlisa ukusetwa okusebenzayo kwevalve yoncedo ngesantya esimiselwe
umlinganiselo wepilot.
IIMPAWU ZOBUGCISA
Iivalve ezichaseneyo kufuneka zibekwe ubuncinane amaxesha angama-1.3 ubukhulu boxinzelelo olubangelwa umthwalo.
Jika uhlengahlengiso ngokwewotshi ukunciphisa isethingi kunye nokukhulula umthwalo.
Ukusetwa kwewotshi ngokupheleleyo kungaphantsi kwe-200 psi (ibha ye-14).
Uxinzelelo lwangasemva kwizibuko lesi-2 longeza kubume boncedo olusebenzayo kumlinganiselo we-1 kunye nomlinganiselo wokulinga umva woxinzelelo.
Ukubuyisela kwakhona kudlula i-85% yoxinzelelo lokusetha xa i-valve iseti yomgangatho. Iisetingi ezisezantsi kunoxinzelelo olusetiweyo olusemgangathweni zinokubangela iipesenti ezisezantsi zokuphinda zisetyenziswe.
I-sun counterbalance cartridges inokufakwa ngokuthe ngqo kwi-cavity efakwe kwi-actuator yezindlu ukwenzela ukhuseleko olongezelelweyo kunye nokuphucula ukuqina kwisekethe.
Iingxaki ezimbini zokuqhekeka kwevalve ziyafumaneka. Sebenzisa i-25 psi (1,7 bar) khangela ngaphandle kokuba i-actuator cavitation iyinkxalabo.
Le valve isebenzisa ii-orifices ukuthoba umlinganiselo wokulingwa kwaye ke ngoko iya kudlula ukuya kuthi ga kwi-40 in³/min./1000 psi (0,7 L/min./70 bar) phakathi kwezibuko 2 kunye ne-3.ukuqwalaselwa kwiisekethe ze-master-slave kunye novavanyo lokuvuza kweendibano zevalve-cylinder.
Zonke i-3-port counterbalance, ulawulo lomthwalo, kunye ne-pilot-to-open check cartridges ziyakwazi ukutshintshana ngokwenyama (okt indlela yokuhamba efanayo, i-cavity efanayo kwisayizi yesakhelo esinikiweyo).
Ibandakanya ulwakhiwo lwesitayile sokudada kwiLanga ukunciphisa ukubakho kwamalungu angaphakathi okubophelela ngenxa yofakelo olugqithisileyo kunye/okanye umngxuma/ikhatriji.ukwahluka komatshini.
UKUSEBENZA
Iivalvu ezichaseneyo ezinoncedo lokulinga zenzelwe ukulawula umthwalo obalekayo. IIvalve yokujonga ivumela ukuhamba okukhululekileyo ukusuka kwizibuko ② ukuya kwizibuko ① ngelixa ibamba ngqo, incediswa ngumqhubi wenqwelomoya.ivalvu yoncedo ilawula ukuhamba ukusuka kwizibuko ① ukuya kwizibuko ② . Uncedo lokulinga kwizibuko ③ lwehlisa iukusetwa okusebenzayo kwevalve yoncedo ngesantya esimiselwe ngumlinganiselo wokulinga.
IIMBONAKALO
1. Iivalve ezichaseneyo kufuneka zibekwe ubuncinane amaxesha angama-1.3 ubukhulu bomthwalo owenziweyouxinzelelo.
2. Uxinzelelo olusemva kwizibuko ② yongeza kwisimo soncedo esisebenzayo kumlinganiselo we-1 kunye nomqhubi wenqwelomoyaUmlinganiselo wamaxesha i-backpressure.
3. Ukubuyisela kwakhona kudlula i-85% yoxinzelelo lokusetha xa i-valve iseti yomgangatho. Ukubeka ezantsikunoxinzelelo olumiselweyo olusemgangathweni lunokubangela iipesenti ezisezantsi zokuphinda zisetyenziswe.
I-4.I-Factory pressure setting isekelwe kwi-30cc / min (2 in3 / min).
Iimpawu zobugcisa
Umsebenzi:
Ivalve yokulinganisa enepilot open isetyenziselwa ukulawula iimeko zokugcwala. Ioyile ihamba ngokukhululekileyo kwicala elinye ukusuka kwizibuko ② ukuya kwizibuko ①; I-oyile iqhutywa ngokuthe ngqo, kwaye umncedi womqhubi uyaphuphuma ukusuka kwizibuko ① ukuya kwizibuko ②. I-Port ③ yindawo yokulawula i-overflow yokuncedisa, kwaye ukusetwa okusebenzayo komsebenzi wokuphuphuma kuyancitshiswa ngokwexabiso lomlinganiselo wolawulo.
Uphawu:
I-1.Uxinzelelo oluphezulu olusetiweyo ubuncinane ngamaxesha e-1.3 ubukhulu bomthwalo womthwalo.
2.Uxinzelelo lwangasemva kwi-port ② yongezwa kwixabiso lokumisela i-valve yokunceda ngokwe-multiple "control ratio + 1", oko kukuthi, ixabiso elongezelelweyo = (1 + control ratio) × ixabiso loxinzelelo.
3.Kumgangatho oqhelekileyo, ixabiso lokuvala uxinzelelo likhulu kune-85% yexabiso loxinzelelo olumiselweyo; ukuba iphantsi kunommiselo osemgangathweni, ipesenti yexabiso lokuvala uxinzelelo liyancitshiswa ngokufanelekileyo.
I-4.I-factory setting ibhekisela kuxinzelelo xa i-valve yokunceda ivulekile (izinga lokuhamba li-30cc / min).
