Indima ye-pneumatic valve positioner I-valve ye-pneumatic isetshenziswa kabanzi embonini yobuchwepheshe bamandla kagesi
Ivalvui-locator (eyaziwa nangokuthi: Indawo ye-valve ye-pneumatic) iyisisetshenziswa esikhulu sevalvu yokulawula, imvamisa ene-Pneumatic Pneumatic control valve, yamukela isignali ephumayo yesilawuli, bese kuba isignali yayo yokuphumayo ukuze ilawule i-valve yokulawula umoya, lapho i-valve yokulawula, Isiqu se-valve sempendulo yokugudluzwa ngomshini womshini ukuya endaweni ye-valve, isimo se-valve ngokusebenzisa isignali kagesi ohlelweni olungaphezulu.
Isakhiwo se-valve positioner:
I-valve positioner ngokuya ngesakhiwo sayo kanye nomgomo wokusebenza ingahlukaniswa ibe indawo yevalvu yomoya, i-valve positioner kagesi kanye ne-valve positioner ehlakaniphile.
I-valve positioner ingakhuphula amandla okukhipha i-valve elawulayo, inciphise ukugogeka kokudluliselwa kwesiginali elawulayo, isheshise isivinini sokunyakaza kwesiqu se-valve, ingathuthukisa umugqa we-valve, inqobe ukungqubuzana kwesiqu se-valve futhi iqede ithonya le-valve. amandla angalingani, ukuze kuqinisekiswe ukuma okulungile kwe-valve elawulayo.
I-valve positioner ADAPTS ezihlukahlukene
Ama-actuator asetshenziswa ngokuvamile ahlukaniswe ama-actuator we-pneumatic, ama-actuator kagesi, i-stroke eqondile, i-Angle stroke. Isetshenziselwa ukuvula nokuvala zonke izinhlobo zamavalvu namapuleti omoya ngokuzenzakalelayo nangokuzenzela.
Umgomo wokusebenza we-valve positioner
I-valve positioner iyisesekeli esiyinhloko se-valve yokulawula. Ithatha isignali ye-valve stem displacement njengesignali yokulinganisa impendulo yokufaka, ithatha isilawuli esiphumayo sesilawuli njengesignali yokusetha, iqhathanise, lapho okubili kunokuchezuka, iguqule isignali yayo yokuphumayo ku-actuator, yenza isenzo se-actuator, isungula isiqu se-valve. izikhathi zokususwa kanye nesiginali yokuphuma kwesilawuli phakathi kokuxhumana okukodwa nokukodwa. Ngakho-ke, i-valve positioner iqukethe isistimu yokulawula impendulo ene-stem displacement njengesignali yokulinganisa kanye nokuphumayo kwesilawuli njengesignali yokusetha. I-variable variable yesistimu yokulawula iyisiginali yokuphuma kwesimo se-valve ku-actuator.
Ukwahlukaniswa kwama-valve positioners
I-valve positioner ihlukaniswe yaba yi-pneumatic valve positioner kanye ne-electrical valve positioner ngokusho kwesignali yokufaka. Isignali yokufaka ye-pneumatic valve positioner iyisignali evamile yegesi, isibonelo, isignali yegesi engu-20~100kPa, isignali yayo yokuphumayo iphinde ibe isignali yegesi evamile. Isignali yokufaka ye-valve positioner kagesi iyisignali evamile yamanje noma ye-voltage, isibonelo, isignali yamanje engu-4~20mA noma isignali ye-voltage engu-1~5V, njll., isignali kagesi iguqulelwa amandla kazibuthe kagesi ngaphakathi kwendawo yokubeka i-valve kagesi, bese emva kwalokho. isignali yegesi ephumayo ku-valve yokulawula yokuguqula.
Ngokusho isiqondiso isenzo zingahlukaniswa ngendlela eyodwa valve positioner kanye ezimbili indlela valve positioner. I-valve yendlela eyodwa isetshenziswa ku-actuator ye-piston, indawo yokubeka i-valve isebenza ohlangothini olulodwa kuphela, i-valve positioner yezindlela ezimbili isebenza nhlangothi zombili zesilinda se-piston actuator, ezinhlangothini ezimbili.
Ngokomphumela we-valve positioner kanye nophawu lokuzuza isignali yokufaka ihlukaniswe yaba yi-positive valve positioner kanye ne-reaction valve positioner. Njengoba isignali yokufaka ku-positive-acting valve positioner ikhula, isignali yokuphumayo nayo iyanda, ngakho ukuzuza kuba kuhle. Isignali yokufaka ye-Reaction valve positioner iyanda, isignali yokuphumayo iyancipha, ngakho-ke, inzuzo ayilungile.
Ngokwesiginali yokufaka i-valve positioner iyisiginali ye-analogi noma isignali yedijithali, ingahlukaniswa ngokwendawo yevalvu evamile kanye nesibeka endaweni ye-valve kagesi yebhasi. Isignali yokufaka yendawo ye-valve evamile ingcindezi ye-analog noma yamanje, isignali kagesi, isignali yokufaka ye-fieldbus Electric valve locator iyisignali yedijithali ye-fieldbus.
Ngokuya ngokuthi indawo yokubeka i-valve inayo i-CPU, ingahlukaniswa ngokwejwayelekile indawo yevalvu kagesi kanye ne-valve kagesi ehlakaniphile yokubeka indawo. Izibonisi ezivamile zamavalvu kagesi azinayo i-CPU, ngakho-ke, azinawo ubuhlakani, azikwazi ukusingatha imisebenzi ehlakaniphile efanelekile. I-valve positioner ehlakaniphile ene-CPU, ingakwazi ukuphatha imisebenzi ekhaliphile efanele, isibonelo, ingathwala isinxephezelo esingaqondile sesiteshi, njll., i-fieldbus electrical valve positioner ingathatha i-P>
Ama-valve womoya asetshenziswa kabanzi embonini yobuchwepheshe bamandla kagesi
Landela ukushesha kobuchwepheshe be-elekthronikhi yamandla kagesi kanye nemboni ye-valve yokulawula okuzenzakalelayo, kanye nokuthuthukiswa kwama-valve actuators kagesi nakho kwenziwa isinyathelo ngesinyathelo, njalo ngomzuzwana emikhiqizweni ehlakaniphile ye-intelligent s nayo ibonakala kancane kancane, ngaleso sikhathi yonke imishini yokulawula izimboni yamanje nayo. kuletha enxanxatheleni yezitolo ngokuqinisekile kuzosiza, futhi kwathola abangane abaningi, i-valve ye-pneumatic Umkhuba wokuthuthukiswa kwe-actuator ye-pneumatic valve uye wathuthuka kancane kancane, futhi i-microcomputer ye-chip eyodwa ebiza kancane kanye ne-microprocessor entsha yesaziso izothatha indawo yokulingisa izingxenye zegesi kagesi ukuze ube yiyunithi yokulawula eyinhloko ye-actuator ye-valve kagesi, bese uqedela uhlelo oluphelele lokulawula idijithali.
Landela ukushesha kobuchwepheshe be-elekthronikhi yamandla kagesi kanye nemboni ye-valve yokulawula okuzenzakalelayo, kanye nokuthuthukiswa kwama-valve actuators kagesi nakho kwenziwa isinyathelo ngesinyathelo, njalo ngomzuzwana emikhiqizweni ehlakaniphile ye-intelligent s nayo ibonakala kancane kancane, ngaleso sikhathi yonke imishini yokulawula izimboni yamanje nayo. kuletha enxanxatheleni yezitolo ngokuqinisekile kuzosiza, futhi kwathola abangane abaningi, i-valve ye-pneumatic Umkhuba wokuthuthukiswa kwe-actuator ye-pneumatic valve uye wathuthuka kancane kancane, futhi i-microcomputer ye-chip eyodwa ebiza kancane kanye ne-microprocessor entsha yesaziso izothatha indawo yokulingisa izingxenye zegesi kagesi ukuze ube yiyunithi yokulawula eyinhloko ye-actuator ye-valve kagesi, bese uqedela uhlelo oluphelele lokulawula idijithali.
Isiko kumishini nezici zokusetshenziswa komkhiqizo okhaliphile wesimanje ontula ekwandiseni kalula kanye nokukhululeka okubalulekile ngesikhathi sokusebenza, empeleni, iningi lama-actuator ama-valve lizohlasela ushintsho olusobala, vele ukuhlela kanye nokuhlonza ipharamitha yemodeli kusuka ekulawuleni okusesilinganisweni. kuzoba * * ukuthuthukisa ukusebenza kokulawula kwama-actuator amavalvu kagesi. Ngokuphathelene namavalvu womoya kanye nawehydraulic, izintambo ezilula kanye nomsebenzi onamandla futhi uyaqhubeka nokwandisa isikali sokusetshenziswa. Ngenxa yokuthi i-valve ye-pneumatic kunethiwekhi yepayipi ivame ukuvulwa futhi ivalwe ngokungavamile, ukupakisha akugugi ukuze kugcinwe umphumela wokuvala isikhathi eside.
Isikhathi sokuthumela: Sep-27-2022
