Ukulungiswa kwengxaki yevalvu yendawo yokuphuma koxinzelelo loxinzelelo lwevalve Ulwahlulo lwendawo eqhelekileyo kunye nomgaqo

Ukulungiswa kwengxaki yevalvu yendawo yokuphuma koxinzelelo loxinzelelo lwevalve Ulwahlulo kunye nomgaqo-siseko Jonga uxinzelelo oluphumayo lwendawo yokumisa ivalve Ngokusasazwa komatshini wokuzisebenzela, njengoko indawo yokulawula ivalve yeyunithi ikwaqaqambisa indima ebalulekileyo. I-Positioner sisixhobo esifumana imiqondiso yombane kwisixokelelwano solawulo kwaye siziguqule zibe ziimpawu zegesi ukulawula indawo yevalvu. Ukuchaneka kokulawula i-valve elawulayo, ngaphandle kwezinto zoyilo lomzimba we-valve, kuxhomekeke ngokupheleleyo ekulawuleni ukuchaneka kwe-positioner. Emva koko sihlala sidibana ne-phenomenon ye-output pressure oscillation ye-locator kwinkqubo yokusebenzisa i-locator. Indlela yokusombulula ingxaki ngolu hlobo lulandelayo: 1, okokuqala, i-valve kunye neendawo zokudibanisa i-positioner azibandakanyi ukuba zikhululekile, indawo yokufakela ichanekile. 2. Ukuba sisixhobo sokumisa oomatshini, kufuneka kuqwalaselwe kwakhona ukuba ngaba ivalve yokunciphisa uxinzelelo ihambelana nesibekeli-ndawo. 3, jonga ukuba kukho izixhobo zombane eziphezulu ezijikelezileyo, susa ukuphazamiseka kwe-electromagnetic. 4. Ukuphelisa ukuvuza kombhobho wokudibanisa womthombo womoya ngamnye. 5. Ukuba yi-activator yefilimu enye, jonga ukuba ukuqina kwe-spring ye-activator kuhambelana ne-locator. 6, ngaphandle kokuba i-actuator inomoya we-cylinder, okanye i-cylinder leakage. 7. Ungabandakanyi iamplifier yendawo okanye ivalve yepiezoelectric yobunzima bomoya nokuba kukho ukungcola. 8, ukuphelisa i-valve friction inkulu kakhulu kwaye i-positioner ayihambelani nemeko. Ulwahlulo lwendawo yevalve eqhelekileyo kunye nomgaqo wevalvu yendawo ngokwesakhiwo: Indawo yevalve yomoya, indawo yevalve yombane kunye nesikhundla sevalvu ekrelekrele, yeyona nto iphambili yevalve yokulawula, ihlala inevalve yolawulo lwepneumatic, iyamnkela umqondiso wokuphuma komlawuli, kwaye emva koko kwimveliso yayo. uphawu lokulawula ivalve yokulawula umoya, xa ivalve yolawulo, isiqu sevalve yengxelo yokufuduswa kwisimo sevalvu kunye nangesixhobo somatshini, Indawo yevalvu igqithiselwa kwinkqubo ephezulu ngophawu lombane. Indawo yevalve (iValve Positioner) Indawo yevalve ngokolwakhiwo: Indawo yevalve yepneumatic, indawo yevalve yombane kunye nevalve enengqondo, sesona sincedisi sevalvu yokulawula, idla ngokuba nevalve yolawulo lwepneumatic, yamkela isignali yemveliso yomlawuli, emva koko kwimveliso yayo. ukulawula ivalve yokulawula umoya, xa ivalve yolawulo, isiqu sevalve yengxelo yokufuduswa kwisimo sevalve kunye nangesixhobo somatshini, Indawo yevalvu igqithiselwa kwinkqubo ephezulu ngophawu lombane. (1) Ulwakhiwo lwesimo sevalvu ngokwendlela yolwakhiwo kunye nomgaqo-siseko wokusebenza unokwahlulwa ngokwendawo yokubeka ivalve yomoya, isihleli sevalve yombane kunye nesibekeli-valve esikrelekrele. I-valve positioner inokunyusa amandla okuphuma kwevalve elawulayo, inciphise i-lag yokuhanjiswa kwesignali elawulayo eyenzekayo, ikhawulezise isantya sokuhamba kwe-valve stem, inokuphucula umgca wevalve, yoyise ukukhuhlana kwe-valve stem kunye nokuphelisa impembelelo. amandla angalinganiyo, ukwenzela ukuba kuqinisekiswe indawo echanekileyo yevalve elawulayo. (2) udidi lwendawo yoku-1, isibambi-ndawo sevalve sahlulwe ngokwendawo yevalve yepneumatic, ivalve yendawo yombane kunye nesibekeli-valve esikrelekrele ngokomqondiso wegalelo. (1) Umqondiso wegalelo le-valve ye-pneumatic ye-valve ngumqondiso oqhelekileyo wegesi, umzekelo, i-20 ~ 100kPa isignali yegesi, umqondiso wokuphuma kwayo ukwangumqondiso wegesi oqhelekileyo. (2) Umqondiso wegalelo lendawo yokubeka ivalvu yombane ngumqondiso oqhelekileyo wangoku okanye umqondiso wombane, umzekelo, i-4 ~ 20mA isiginali yangoku okanye i-1 ~ 5V isignali yamandla ombane, njl. njl., umqondiso wombane uguqulwa ube ngamandla ombane wombane ngaphakathi kwendawo yokubeka ivalve yombane. , kwaye emva koko umqondiso wegesi ophumayo kwivalve yolawulo lokuguqula. (3) isibonisi sevalvu yombane esikrelekrele siya kulawula ukuphuma kwegumbi umqondiso wangoku kwi-valve elawula umqondiso wegesi yevalve, ngokungqinelana ne-valve stem friction xa usebenza, ukuguquguquka okuphakathi koxinzelelo kunye namandla angalungelelananga, ukuze ukuvulwa kwevalve kuhambelana negumbi lokulawula. imveliso isignali yangoku. Kwaye iiparamitha ezihambelanayo zingasetwa ngokucwangciswa okuhlakaniphile ukuphucula ukusebenza kwevalve yokulawula. 2, ngokwesalathiso sesenzo sinokwahlulwa sibe yindlela enye yevalve yendawo kunye ne-valve yendlela-mbini. Ivalve yendlela enye isetyenziswa kwi actuator yepiston, ivalve positioner isebenza kwicala elinye, ivalve yendlela ezimbini isebenza kumacala omabini esilinda yepiston actuator, kumacala amabini. 3, ngokwesiphumo sevalve yendawo kunye nesimboli yegalelo lokuzuza isimboli yahlulwe ngokwendawo yevalvu evumayo kunye nevalve yokusabela. Njengoko umqondiso wegalelo kwi-positive-acting valve positioner inyuka, isignali yokuphuma nayo iyanda, ngoko inzuzo ilungile. Isignali yegalelo ye-Reaction valve positioner iyanda, isignali yokuphuma iyancipha, ngoko ke, inzuzo ayilunganga. 4, ngokwesiphawuli sendawo yevalve yisignali ye-analog okanye isignali yedijithali, inokwahlulwa ngokwendawo yevalve eqhelekileyo kunye nebhasi yebhasi yendawo yombane yombane. Umqondiso wegalelo welocator yevalvu eqhelekileyo luxinzelelo lwe-analog okanye yangoku, isignali yombane, isignali yegalelo ye-fieldbus yombane we-valve locator luphawu lwedijithali lwe-fieldbus. 5, ngokubhekiselele ekubeni isibeki-valve esine-CPU sinokwahlulwa sibe sisixhobo esiqhelekileyo sevalvu yombane kunye nesibekeli-valve sombane esikrelekrele. Izimiseli zevalvu zombane eziqhelekileyo azinayo i-CPU, ke ngoko, azinabukrelekrele, azikwazi ukusingatha imisebenzi efanelekileyo yobukrelekrele. Ubukrelekrele bevalve yendawo yombane kunye ne-CPU, inokujongana nokusebenza okukrelekrele, umzekelo, inokuthwala imbuyekezo yeshaneli phambili engahambelaniyo, njl. njl., indawo yokubeka ivalve yombane ye-fieldbus nayo inokuthatha i-P> 6, ngokwendlela yokufumanisa umqondiso wengxelo inokwahlulwa. Umzekelo, ivalve positioning ibona umqondiso wevalve ngendlela yokudibanisa ngoomatshini, ivalve positioning ibona ukushukuma kwesikhondo sevalve ngendlela yesiphumo seHolo, isiphawuli sevalve sibona ukufuduswa kwesikhondo sevalve ngendlela ye-electromagnetic induction, njl. ) Umgaqo wokusebenza Ivalve yokubeka indawo yeyona nto iphambili yevalve yokulawula. Ithatha i-valve stem displacement yesiginali njengophawu lokulinganisa impendulo yegalelo, ithatha isiginali yemveliso yesilawuli njengophawu lokumisela, ithelekisa, xa ezi zimbini zinenxaxhi, itshintsha isiginali yayo yokuphuma kwi-actuator, yenza isenzo se-actuator, iseka isiqu sevalve. ukufuduswa kunye nomqondiso wesiphumo somlawuli phakathi kwembalelwano enye ukuya kwelinye. Ngoko ke, i-valve positioner iqulethe inkqubo yokulawula impendulo kunye ne-stem displacement njengomqondiso wokulinganisa kunye nokukhutshwa komlawuli njengophawu lokumisela. Ulawulo oluguquguqukayo lwenkqubo yolawulo luphawu oluphumayo lwendawo yevalve kwi-actuator. (esine) umgaqo-siseko wentshukumo (1) osetyenziselwa ukulawula inkqubo yolawulo ebalulekileyo eneemfuno zomgangatho ophezulu, ukuze kuphuculwe ukuchaneka kwendawo kunye nokuthembeka kwesivalo esilawulayo. (2) yevalve iziphelo ezimbini zomahluko woxinzelelo mkhulu (△p1MPa) amaxesha. Ngokwandisa uxinzelelo lomthombo womoya, amandla okuphuma kwe-actuator anyuswa ukoyisa amandla angalinganiyo aveliswe lulwelo kwi-spool kunye nokunciphisa impazamo ye-stroke. (3) xa i-medium ilungiselelwa ubushushu obuphezulu, uxinzelelo oluphezulu, ubushushu obuphantsi, ityhefu, inokutsha, iqhuma, ukwenzela ukuthintela ukuvuza kwangaphandle, ukupakisha kudla ngokucinezelwa kakhulu, ngoko ke ukungqubuzana phakathi kwe-valve stem kunye nokupakisha enkulu, ngeli xesha, i-locator inokoyisa ukulibaziseka. (4) Xa i-medium yi-viscous fluid okanye iqulethe into eqinileyo emisiwe, i-positioner inokoyisa ukuchasana kwendawo ukuya kwintshukumo yesiqu. (5) kwidayamitha enkulu (Dg100mm) ivelufa elawulayo ukunyusa i-thrust yemveliso ye-actuator. (6) Xa umgama phakathi komlawuli kunye ne-actuator ungaphezulu kwe-60m, i-positioner inokoyisa i-lag yokuhanjiswa kwesignali yokulawula kunye nokuphucula isantya sokusabela kwevalve. (7) esetyenziselwa ukuphucula iimpawu zokuhamba kwevalve elawulayo. (8) Xa umlawuli elawula ii-actuator ezimbini ukuphumeza ulawulo lolwahlulo, ii-positioners ezimbini zingasetyenziselwa ukwamkela umqondiso wegalelo eliphantsi kunye nomqondiso ophezulu wegalelo ngokulandelelanayo, ngoko ke i-actuator ephantsi yoluhlu lwesenzo, enye intshukumo yokuphakama, oko kukuthi, yenza ulwahlulo. uhlengahlengiso. (5) iintlobo ezifanelekileyo I-activators ezisetyenziswa ngokuqhelekileyo zihlulwe zibe zi-actuator ze-pneumatic, i-activators zombane, i-stroke eqondileyo, i-Angle stroke. Isetyenziselwa ukuvula nokuvala zonke iintlobo zeevalvu kunye neepleyiti zomoya ngokuzenzekelayo kwaye ngesandla.