Ukucushwa Kwe-Valve Positioner:

Ama-valve positioners angahlukaniswa abei-pneumatic valve positioners, i-electro-pneumatic Valve positioner kanye ne-valve positioner ehlakaniphile ngokwesakhiwo sayo kanye nesimiso sokusebenza.
I-valve positioner ingakhuphula amandla okukhipha i-valve elawulayo, inciphise ukugogeka kokudluliselwa kwesiginali elawulayo, isheshise ukunyakaza kwesiqu se-valve, ithuthukise umugqa we-valve, inqobe ukungqubuzana kwesiqu se-valve futhi iqede ithonya le-valve. amandla angalingani Ukuze kuqinisekiswe ukuma kahle kwe-valve yokulawula.

Ama-adaptha we-Valve Positioner:

I-actuator pneumatic actuator evame ukusetshenziswa, i-actuator kagesi, kukhona ukushaywa okuqondile, ukushaywa kwe-angular.Ngokuzenzakalelayo, ukuvulwa ngokuzenzakalelayo nokuvala zonke izinhlobo zamavalvu, ipuleti lomoya, njll.

Isimiso Sokusebenza Se-Valve Positioner:

I-valve positioner iyisesekeli esiyinhloko se-valve yokulawula.Ithatha isignali yokususwa kwesiqu se-valve njengesignali yokulinganisa impendulo yokokufaka, ithatha isignali yokuphumayo yesilawuli njengesignali yokusetha, iqhubeke nokuqhathanisa, lapho okubili kunokuchezuka, iguqule isignali yayo yokukhiphayo ibe yindlela yokuphatha, ibangele isenzo sendlela yokuphatha. , ukuxhumana okukodwa kuya kokukodwa phakathi kwe-multiple displacement ye-valve stem kanye nesignali yokuphuma yesilawuli iyasungulwa.Ngakho-ke, indawo yokubeka i-valve iqukethe isignali yokulinganisa isiqu se-valve kokuphumayo kwesistimu yokulawula impendulo yesethi yesilawuli.Okuguquguqukayo kokulawula kwesistimu yokulawula amasignali okukhiphayo we-valve positioner kuya ku-actuator.

Ukuhlukaniswa Kwezindawo Zokumisa Ama-Valve:

I-valve positioner ngokusho kwesignali yokufaka ihlukaniswe yaba indawo ye-valve ye-pneumatic kanye ne-valve positioner kagesi.Isignali yokufaka ye-pneumatic valve positioner iyisignali evamile yegesi, isibonelo, isignali yegesi engu-20 ~ 100KPA, isignali yayo yokuphumayo isignali yegesi evamile.Isignali yokufaka ye-valve kagesi iyisiginali evamile yamanje noma ye-voltage, njengesignali yamanje engu-4~20mA noma isignali ye-voltage engu-1~5V, njll. Endaweni yokubeka ivalvu kagesi izoguqulelwa amandla kazibuthe kagesi, isignali yegesi ibe isiphuma ekudayelini. i-valve yokulawula.
Ngokusho isiqondiso isenzo zingahlukaniswa ngendlela eyodwa valve positioner kanye ezimbili indlela valve positioner.Lapho i-valve positioner yendlela eyodwa isetshenziswa ku-actuator ye-Piston, indawo yokubeka i-valve isebenza ohlangothini olulodwa kuphela, futhi indawo yokubeka i-valve enezinhlangothi ezimbili isebenza nhlangothi zombili zesilinda se-piston actuator nakuzo zombili izinkomba.

Ngokomphumela we-valve positioner kanye nezimpawu zokuzuza kwesignali ye-valve zihlukaniswa zibe indawo ephozithivu yevalvu kanye ne-negative valve positioner.Lapho isignali yokufaka ye-valve esebenza kahle ikhula, isignali yokuphumayo nayo iyanda, ukuze inzuzo ibe iphozithivu.Uma isignali yokufaka yesibonisi se-Valve esiphikisayo inyuswa, isignali yokuphumayo iyancishiswa, ngakho-ke, inzuzo iba negethivu.

Ngokwesiginali yokufaka i-valve positioner iyisiginali ye-analog noma isignali yedijithali, ingahlukaniswa ibe yindawo yokubeka i-valve evamile kanye nendawo yokubeka i-valve kagesi yebhasi.Isignali yokufaka ye-valve positioner evamile ingcindezi yomoya ye-analog noma isignali yamanje kanye ne-voltage, futhi isignali yokufaka ye-field bus electric valve positioner iyisignali yedijithali yebhasi lasendle.

Ngokuya ngokuthi ingabe i-valve positioner ene-CPU ingahlukaniswa ibe yindawo evamile yevalvu kagesi kanye ne-intelligent valve positioner kagesi.I-valve kagesi evamile yokubeka indawo ayinayo i-CPU, ngakho-ke, ayinakho ukuhlakanipha futhi ayikwazi ukuphatha imisebenzi ehlakaniphile efanele.I-valve positioner ehlakaniphile ene-CPU ingakwazi ukusingatha ukusebenza okuhlakaniphile, isibonelo, ingakwazi ukwenza isinxephezelo esingaqondile sesiteshi esiya phambili, njll. Indawo yokubeka i-valve kagesi yebhasi yasensimini nayo ingakwazi ukwenza imojula yokusebenza njenge-PID ukuze ibone ukusebenza okuhambisanayo. .