Vavu yopumulira valavu yofufutira solenoid valavu yowongolera Vavu yayikulu 723-46-48100

Valavu yothandizira ndi hydraulic pressure control valve, yomwe makamaka imagwira ntchito yochepetsera kupanikizika kosalekeza, kuwongolera kupanikizika, kutsitsa dongosolo ndi chitetezo chachitetezo pazida zama hydraulic. Mu kachulukidwe pampu throttling regulation dongosolo, kachulukidwe mpope amapereka otaya nthawi zonse, pamene kuthamanga kwa dongosolo kumawonjezeka, kufunikira kwa kutuluka kudzachepetsedwa, panthawiyi valve yothandizira imatsegulidwa, kotero kuti kuthamanga kwambiri kubwerera ku thanki, kuonetsetsa kuti kuthamanga kwa valve yolowera, ndiko kuti, kuthamanga kwa potulutsira pampu kumakhala kosasintha. Valve yothandizira imalumikizidwa motsatizana pamayendedwe obwerera mafuta, ndipo kukhazikika kwa magawo osunthira kumbuyo kwa valavu yothandizira kumawonjezeka. Ntchito yotsitsa ya dongosololi ndikulumikiza valavu ya solenoid ndi kayendedwe kakang'ono kamene kakusefukira pamndandanda pa doko lakutali la valve yothandizira. Pamene electromagnet yapatsidwa mphamvu, doko loyang'anira kutali la valve yothandizira limadutsa mu thanki yamafuta. Panthawiyi, pampu ya hydraulic imatsitsidwa ndipo valve yothandizira imagwiritsidwa ntchito ngati valavu yotsitsa. Chitetezo cha chitetezo ntchito, pamene dongosolo likugwira ntchito bwino, valavu imatsekedwa, pokhapokha ngati katunduyo akupitirira malire omwe atchulidwa, kusefukira kumatsegulidwa, ndipo chitetezo chochuluka chimachitidwa, kotero kuti kupanikizika kwa dongosolo sikuwonjezeka.

Ntchito zazikulu za valve yothandizira ndi mfundo ziwiri zotsatirazi:

(1) Kuwongolera kukakamiza ndi kuwongolera. Ngati agwiritsidwa ntchito mu gwero la hydraulic lopangidwa ndi mpope wochulukira, amagwiritsidwa ntchito posintha kutulutsa kwapope kuti kutsekereza kukhazikika.

(2) Chepetsani kupanikizika. Ngati amagwiritsidwa ntchito ngati valavu yotetezera, pamene dongosolo likugwira ntchito bwino, valavu yothandizira ili mu malo otsekedwa, ndipo imangoyamba kusefukira pamene kupanikizika kwa dongosolo kumakhala kwakukulu kuposa kukakamizidwa kwake, komwe kumagwira ntchito yoteteza katundu pa dongosolo.

Makhalidwe a valve yothandizira ndi: valavu ndi katundu zimafuna kuti zikhale zofanana, doko lothandizira limalumikizidwa kumbuyo kwa thanki yamafuta, ndipo kukakamiza kolowera ndi malingaliro oyipa.

Nayi kuyang'ana mwachangu pa valve yothandizira yomwe imagwira ntchito mwachindunji:

Direct acting relief valve ndi valavu yopumula momwe kuthamanga kwa hydraulic kwa mzere waukulu wamafuta omwe akugwira pa spool kumayenderana mwachindunji ndi kukakamiza kowongolera mphamvu yamasika. Monga momwe tawonetsera pa Chithunzi 1, valavu yothandizira mwachindunji imapanga zinthu zitatu zoyambira chifukwa cha mitundu yosiyanasiyana ya ma valve ndi malo oyezera mphamvu:

Gwiritsani ntchito doko losefukira lamtundu wa slide valve, kuyeza kuthamanga kwa nkhope yomaliza;

Doko lamtundu wa taper valve kusefukira limatengedwa, ndipo njira yoyezera kuthamanga kwa nkhope yomaliza imatengedwanso.

Pamwamba poyezera kuthamanga komanso m'mphepete mwa khomo la valve onse amagwiritsidwa ntchito ngati ma cones.

Komabe, ziribe kanthu mtundu wamtundu wanji, valavu yothandizira mwachindunji imapangidwa ndi magawo atatu, monga kukakamiza kuwongolera kasupe ndi chowongolera chowongolera kukakamiza, doko la valve yopumira ndi malo oyezera kuthamanga.