Uxinzelelo lomqhubi wenqwelomoya luyichaphazela njani ivalve yokulinganisa?
2024-03-14Umyinge we-pilot ye-valve ye-counterbalance yi-ratio yendawo yokulinga kunye nommandla wokuphuphuma, oku kuthetha ukuba eli xabiso likwalingana: xa i-valve yokulinganisa i-spring ibekwe kwixabiso elimiselweyo, uxinzelelo olufunekayo ukuyivula xa kukho. akukho oli yokulinga kunye neoyile yokulinga yodwa ivula umlinganiselo woxinzelelo.
Xa kungekho xinzelelo lweoli kwi-pilot oil port, i-balanced open pressure yi-spring setting value. Ukuba akukho kunikezelwa kweoli ye-pilot, i-valve yokulinganisa ivulwa ngumthwalo, kwaye ukuhla koxinzelelo kuya kunyuka ngokukhawuleza njengoko izinga lokuhamba linyuka (oku kukwasetyenziselwa ukulinganisa umthwalo). Ukuba impembelelo yoxinzelelo lwe-outlet ayiqwalaselwa, i-pilot pressure = (ixabiso lokumisela - umthwalo) / umlinganiselo wendawo. Ukuba i-pilot yangaphakathi isetyenzisiweyo, uxinzelelo lokuvula lunokusetwa ngokulungelelanisa i-valve bolt.
ifomula ethile
Uxinzelelo lokuvula = (uxinzelelo lokusetha - uxinzelelo lomthwalo ophezulu) / umlinganiselo we-pilot wevalve
Kwivalve yebhalansi, ukuba umlinganiselo wesikhokelo soxinzelelo yi-3: 1, kukho i-3: 1 ubudlelwane obulinganayo phakathi kwe-oyile yomqhubi kunye nendawo yoxinzelelo ehambelana ne-oil inlet yokuvula i-valve core, ngoko ke uxinzelelo lokulawula olufunekayo ukuvula i-valve core. kufuneka ibe ngaphantsi, kunye nolawulo Umlinganiselo woxinzelelo kuxinzelelo apho i-oyile yokungena ivula i-spool malunga ne-1: 3.
Uluhlu olukhokelayo
I-3: 1 (umgangatho) Ufanelekile kwiimeko ezinotshintsho olukhulu lomthwalo kunye nokuzinza kwemithwalo yomatshini wobunjineli.
I-8: 1 ifanelekile kwiimeko apho imfuno yomthwalo ihlala ihleli.
Iimeko ezahlukeneyo zokusebenza kunye neendawo ezingqongileyo zifuna ukhetho oluhlukeneyo lomlinganiselo woxinzelelo. Xa umthwalo ulula kunye nokuphazamiseka kwangaphandle kuncinci, umlinganiselo omkhulu wokulawula i-hydraulic ukhethwa ngokuqhelekileyo, onokunciphisa ixabiso loxinzelelo lomqhubi kunye nokugcina amandla. Kwiimeko ezinokuphazamiseka okukhulu komthwalo kunye nokungcangcazela okulula, umlinganiselo omncinci woxinzelelo ukhethwa ngokubanzi ukuqinisekisa ukuba ukuguquguquka koxinzelelo lomqhubi akuyi kubangela ukungcangcazela rhoqoivelufa yokulinganisaundoqo.
Izinto ekufuneka uziqwalasele xa ukhetha ivalve echaseneyo:
1. Umyinge wokuhamba unokuba phezulu kancinane kunomlinganiselo wokuqukuqela olinganisiweyo;
2. Sebenzisa i-valve ene-pilot ratio ephantsi kangangoko kunokwenzeka, ezinzileyo;
3. Ivalve yokulinganisa isetyenziselwa ukulawula uxinzelelo, kungekhona isantya;
4. Zonke iingcinezelo ezibekiweyo zivula iingcinezelo;
5. Ayinakusetyenziswa njengevalve yokukhulula;
6. Hlala ngokusondeleyo kwi-actuator kangangoko kunokwenzeka ukukhusela i-hose ekuqhumeni.
