I-valve yokulawula ifilimu yomoya ngaphansi kwaziphi izimo okufanele isebenzise isibonisi sevalvu

I-valve yokulawula ifilimu yomoya ngaphansi kwaziphi izimo okufanele isebenzise i-valve positioner indlela yokuhlola i-valve ye-pneumatic film elawula i-valve: Hlola ukuvuza kwebhokisi lokupakisha elivalayo namanye amalunga Izinga lokushisa lamanzi asekamelweni liphindwe izikhathi ezingu-1.1 kunokucindezela okulinganiselwe kwe-valve elawulayo noma izikhathi ezingu-1.5 ukucindezela okukhulu kokusebenza, ngokusho kwesiqondiso sokuvula i-spool engxenyeni eyodwa ye-valve elawulayo, omunye umkhawulo uvaliwe. Bamba ingcindezi imizuzu eyi-10 ngenkathi isiqu sinyakaza izikhathi ezi-1-3 ngomzuzu. Akufanele kube khona ukuvuza ekuxhumekeni kwebhokisi lokupakisha lokuvala nezinye izinto. 2 Hlola ukuvuza ngesikhathi sokuvala shaqa ① Ukuhlolwa kokuvuza kwendlela yokujova amanzi Ukuze ivalvu elawula izihlalo ezimbili isetshenziswe ngendlela evamile elula yokujova amanzi ukuhlola isimo sokuvuza. Faka ingcindezi yesignali egumbini legesi yefilimu ukuze uvale ivalve elawulayo (faka umfutho wesignali ongu-1.2kg/cm2 kuvalvu evala igesi, kanye nomfutho wesignali yevalvu evulekile inguziro). I-inlet ye-valve elawulayo ijova emanzini okushisa kwekamelo, uma kungekho ngcindezi ngakolunye uhlangothi akufanele kube ukuconsa. ② Hlola ukuvuza komfutho wamanzi Le ndlela ingasetshenziselwa ukunqanyulwa kwengozi noma ukuvala i-valve elawula isihlalo esisodwa esiqinile, i-engela elawulayo valvu kanye ne-diaphragm valve. Ukucindezela kwesignali okokufaka ekamelweni le-membrane ukuze uvale isilawuli. Amanzi asezingeni lokushisa lasekamelweni adluliselwa kwelinye icala le-valve elawulayo ngokucindezela okuqhubekayo kwe-10kg / cm2 ekuvuleni i-spool. Inani elivuzayo elikalwa ngakolunye uhlangothi ngesitophuwashi nenkomishi yokulinganisa akufanele lidlule inani elivumelekile. I-valve yokulawula ifilimu yomoya ngaphansi kwaziphi izimo okufanele isebenzise i-valve positioner 1. Uma isignali ephumayo yesilawuli sikagesi isetshenziswa ukuze kusetshenziswe i-actuator yomoya ngesikhathi sokulawula okuhlanganisiwe, kuyadingeka ukuthi kube nomsebenzi wokuma. Lapho isignali ephumayo yesilawuli sikagesi isetshenziselwa ukusebenzisa i-actuator yomoya, idingeka ukuthi ibe nomsebenzi wokuma ngesikhathi esifanayo, ingasebenzisa indawo kagesi-yegesi engu-2, isenzo sezikhundla ezimbili ezikhathini zokulungiswa kwesenzo esilinganiselwe akukho ntwasahlobo noma ipiston. I-actuator iyisenzo esinezindawo ezimbili, lapho kudingeka ukuthi ibe nokulungisa ngokulinganayo, akukho mshini wokuvula i-spring noma wepiston onezindawo ezimbili, lapho kudingeka ukuthi kube nokulungiswa okulinganayo, kufanele kusetshenziswe isihleli sevalvu. I-valve positioner kumele isetshenziswe. 3, ngesikhathi somehluko wengcindezi ephezulu phakathi kwamaphethelo amabili e-valve engu-10kgf/cm medium ku-spool amandla angalingani emakhulu, uma △P > 10kgf/cm2, okuphakathi nendawo ku-spool amandla okungalingani kukhudlwana, ngokuthuthukisa umoya. ingcindezi yomthombo we-positioner ukufinyelela amandla okukhiphayo e-actuator, ukunqoba okuphakathi kwamandla okungalingani kwe-spool. Ingcindezi yomthombo womoya ifinyelela amandla okukhiphayo we-actuator ukuze inqobe amandla angalinganisiwe we-medium ku-spool. I-4, yemidiya yengcindezi ephezulu kuleli cala ukuze kuvinjwe ukungena kwe-medium, ukupakisha kuqinile kakhulu, ukungqubuzana kukhulu, kulokhu ukuvimbela ukungena kwe-medium, ukupakisha kuqinile kakhulu, ukungqubuzana kukhudlwana, ngesikhathi esifanayo, amandla angalingani we-medium ku-spool nawo mkhulu, imfuneko yedivayisi yokubeka ukuze inqobe. Amandla angenakulinganiswa obuningi ku-spool nawo makhulu, okudinga indawo yokuwina.