I-Hydraulic Proportional, high-response kanye ne-servo valve

Ama-valve aqondisayo alinganayo (PDVs) awuhlobo lwamavalvu akwazi ukulawula ukugeleza koketshezi ngendlela enembile nelawulwayo. Avame ukusetshenziswa ezinhlelweni zamandla eziwuketshezi ukulawula ukunyakaza kwama-actuator, njengamasilinda amanzi noma ama-pneumatic motors.

Ama-PDV ane-spool engahanjiswa emuva naphambili ngaphakathi kwe-valve yomzimba. I-spool ixhunywe ku-actuator, njenge-hydraulic cylinder noma motor pneumatic, futhi uma isignali yokulawula isetshenziswa ku-valve, ibangela ukuthi i-spool ihambe ngaphakathi komzimba we-valve. Lokhu kunyakaza kulawula ukungena nokuphuma koketshezi ku-actuator, okubuye kubangele ukuthi i-actuator ihambe ngendlela elawulwayo.

Ama-PDV anikeza izinzuzo ezimbalwa ngaphezu kwamavalvu avamile okuvula/avaliwe. Enye yezinzuzo eziyinhloko yikhono labo lokulawula ukugeleza koketshezi ngendlela enembile neqhubekayo. Lokhu kuvumela ukulawula okunembe kakhudlwana kokunyakaza kwe-actuator, okungathuthukisa ukusebenza kwesistimu futhi kunciphise ukusetshenziswa kwamandla. Ama-PDV nawo asabela kangcono ekulawuleni amasiginali, njengoba akwazi ukulungisa ngokushesha ukugeleza koketshezi ukuze afane nezidingo zohlelo.

Kunezinhlobo ezimbalwa zama-PDV atholakalayo, okuhlanganisa ama-PDV emishini, ama-PDV kagesi, nama-electro-hydraulic PDV. Ama-PDV emishini asebenzisa ukuxhumana kwemishini noma ikhamera ukulawula ukunyakaza kwe-spool, kuyilapho ama-PDV e-electronic esebenzisa isilawuli se-electronic ukulawula ukunyakaza kwe-spool. Ama-PDV e-electro-hydraulic PDV ahlanganisa izici zakho zombili i-PDV yemishini ne-elekthronikhi ngokusebenzisa isilawuli se-elekthronikhi ukuze ulawule i-hydraulic actuator ehambisa i-spool ngaphakathi komzimba wevalvu.

Sengiphetha, ama-valve aqondisa ngokulinganayo ayingxenye ebalulekile yezinhlelo zamandla eziwuketshezi ezidinga ukulawulwa okunembile kokunyakaza kwe-actuator. Banikeza izinzuzo ezimbalwa ngaphezu kwamavalvu avamile okuvula/avaliwe futhi atholakala ngezinhlobo eziningana ezihlukene ukuze avumelane nezinhlelo zokusebenza ezahlukene.

Ama-valve aqondisayo alinganayo ayatholakala njengama-valve asebenza ngokuqondile futhi aqhutshwa umshayeli noma ngaphandle kwama-electronics ahlanganisiwe (OBE). Ngokusebenzisa ama-elekthronikhi ahlanganisiwe, anciphisa umzamo wekhebula futhi enze ukuphatha kalula. Lawa ma-valve alungele izinhlelo eziningi ezivaliwe ze-loop.