Idivayisi kagesi ye-Valveiyithuluzi lokushayela elibalulekile ukuze ukwazi ukulawula uhlelo lwe-valve, isilawuli esizenzakalelayo nesilawuli kude.Inqubo yayo yokunyakaza ingalawulwa nge-stroke, i-torque noma i-axial thrust.Ngoba izici zokusebenza kwedivayisi kagesi ye-valve kanye nokusetshenziswa kuncike ohlotsheni lwe-valve, imininingwane yedivayisi kanye ne-valve esemgqeni wepayipi noma indawo yemishini.

1. Khetha I-Actuator Kagesi Ngokuhambisana Nohlobo Lwevalvu

1.1 I-Angle Stroke Electric actuator (I-engeli<360°) ifanele i-valve uvemvane, i-valve yebhola, i-plug valve, njll.
Ukuzungezisa kweshaft ye-actuator kagesi ngaphansi kweviki, okungaphansi kuka-360°, ngokuvamile okungu-90° ukuze kuzuzwe ukulawulwa kwenqubo yokuvula nokuvala.Lolu hlobo lwe-actuator kagesi ngokusho kokufakwa kwesixhumi esibonakalayo esihlukile luhlukaniswe ngohlobo oluxhumeke ngqo, uhlobo lwe-base crank lwesibili.

A) Ukuxhumeka okuqondile: kubhekisela kushafti yokukhipha i-actuator kagesi exhunywe ngokuqondile esiqwini se-valve ngendlela yokufaka.

B) Uhlobo lwe-Base crank: ibhekisela ku-shaft ephumayo ngokusebenzisa ifomu lokuxhuma i-crank ne-stem.

1.2 Ama-actuator kagesi ashintshashintsha kakhulu (i-engeli>360°) yamavalvu esango, amavalvu eglobhu, njll. Ukulawulwa kwenqubo yokuvula nokuvala i-valve.

1.3 I-stroke eqondile (ukunyakaza okuqondile) ifanele i-valve yokulawula isihlalo esisodwa, i-valve elawula izihlalo ezimbili, njll.Ukunyakaza kwe-shaft ephumayo ye-actuator kagesi kumugqa, hhayi ukujikeleza.

2. Thola imodi yokulawula ye-actuator kagesi ngokuvumelana nezidingo zokulawula inqubo yokukhiqiza

2.1 Uhlobo lokushintsha (i-open loop control) ama-actuator kagesi ohlobo lokushintsha ngokuvamile ahlinzeka ngokulawula okuvulekile noma okuvaliwe kwevalvu, noma isendaweni evuleke ngokugcwele noma ivaleke ngokugcwele, lawo mavalvu awadingi ukulawula okunembile kokugeleza kwemidiya.Kubaluleke kakhulu ukusho ukuthi i-actuator kagesi yohlobo lokushintshwa ingahlukaniswa izingxenye ezimbili kanye nesakhiwo esihlanganisiwe ngenxa yezinhlobo ezahlukene zesakhiwo.Ukukhethwa kohlobo kufanele kwenziwe kulokhu, noma kuvame ukwenzeka ekufakeni nasekulawuleni inkambu ukungqubuzana nezinye izigigaba ezingafani.

A) Isakhiwo sokuhlukanisa (esivame ukwaziwa njengohlobo oluvamile): Iyunithi yokulawula ihlukaniswa ne-actuator kagesi.I-actuator kagesi ayikwazi ukulawula i-valve ngokwayo, kodwa kufanele ilawulwe iyunithi yokulawula eyengeziwe.Ububi balesi sakhiwo ukuthi akulula ukufaka lonke uhlelo, kwandisa izindleko zezintambo nokufaka, futhi kulula ukuvela iphutha, lapho iphutha lenzeka, akulula ukuxilonga nokugcina, isilinganiso sentengo yokusebenza. ayilungile.

B) Isakhiwo esihlanganisiwe (esivame ukubizwa ngokuthi i-Monolithic) : Iyunithi yokulawula ihlanganiswe ne-actuator kagesi futhi ingasebenza endaweni ngaphandle kweyunithi yokulawula yangaphandle, futhi ingasetshenziswa ukude kuphela ngokukhipha ulwazi olufanele lokulawula.Inzuzo yalesi sakhiwo ukwenza lula ukufakwa kohlelo lonke, ukunciphisa izindleko zezintambo nokufaka, ukuxilongwa okulula nokuxazulula izinkinga.Kodwa umkhiqizo wendabuko ohlanganisiwe wesakhiwo nawo unezindawo eziningi ezingaphelele, ngakho-ke ukhiqize i-actuator kagesi ehlakaniphile.

I-2.2 I-Adjustable (i-closed-loop control) i-actuator kagesi eguquguqukayo ayinayo kuphela umsebenzi wesakhiwo esihlanganisiwe sohlobo lokushintsha, kodwa futhi ingalawula ngokunembile i-valve futhi ilungise ukugeleza okuphakathi.
A) Uhlobo lwesiginali yokulawula (yamanje, i-voltage) isignali yokulawula ye-actuator kagesi elawulwayo ngokuvamile inesignali yamanje (4 ~ 20MA, 0 ~ 10MA) noma isignali kagesi (0 ~ 5V, 1 ~ 5V) .

B) Uhlobo lomsebenzi (uhlobo oluvulekile lukagesi, uhlobo oluvaliwe lukagesi) uhlobo lokulawula lwemodi yokusebenza ye-actuator kagesi ngokuvamile uhlobo oluvulekile lukagesi (ukulawula okungu-4 ~ 20MA isibonelo, uhlobo oluvulekile lukagesi yisignali ye-4MA ehambisana ne-valve evaliwe, i-20MA ehambisana i-valve evulekile) , olunye uhlobo luwuhlobo oluvaliwe lukagesi (ukulawula kwe-4-20MA isibonelo, uhlobo oluvulekile lukagesi luyisignali ye-4MA ehambisana ne-valve evulekile, i-20MA ehambisana ne-valve evaliwe).

C) Ukulahlekelwa kokuvikela isignali kusho ukuthi i-actuator kagesi ivula futhi ivale i-valve yokulawula enani lokuvikela elibekiwe lapho isignali yokulawula ilahlekile ngenxa yephutha lesifunda, njll.

3. Thola i-torque ephumayo ye-actuator kagesi ngokuya ngetorque edingekayo ukuze uvule futhi uvale i-valve.I-torque edingekayo ukuze uvule futhi uvale i-valve inquma ukuthi ingakanani i-torque ekhethwa yi-actuator kagesi, evame ukunikezwa umsebenzisi noma ikhethwe umkhiqizi wamavalvu Njengoba umenzi we-actuator enesibopho kuphela ngetorque ephumayo ye-actuator, itorque iyadingeka. ukuvulwa nokuvala okuvamile kwe-valve kunqunywa izici ezifana nobukhulu be-valve orifice, ingcindezi yokusebenza, njll. Ngakho-ke, i-torque edingwa yi-valve efanayo yokucaciswa okufanayo iyahlukahluka kumkhiqizi oyedwa kuya komunye, ngisho umkhiqizi wevalvu ofanayo wokucaciswa okufanayo Uma ukukhetha kwe-actuator I-Torque kukuncane kakhulu kuzodala i-valve evamile yokuvula nokuvala, ngakho i-actuator kagesi kufanele ikhethe uhla olufanele lwetorque.

4. Ngokusho kokusetshenziswa kwemvelo kanye nokuhlukaniswa kwebanga lokumelana nokuqhuma kwamadivaysi kagesi ngokuya ngokusetshenziswa kwemvelo kanye nezidingo zebanga lokufaka ukuqhuma, amadivaysi kagesi angahlukaniswa ngohlobo olujwayelekile, uhlobo lwangaphandle, uhlobo olungashi, uhlobo lwangaphandle olungashi. njalo njalo.

5. Isisekelo Sokukhetha Idivayisi Kagesi Ye-Valve Kahle:

5.1 I-torque esebenzayo: i-torque esebenzayo iyipharamitha ebaluleke kakhulu yokukhetha idivayisi kagesi ye-valve, i-torque ephumayo yedivayisi kagesi kufanele ibe izikhathi ezingu-1.2 ~ 1.5 ze-Torque ephezulu yokusebenza ye-valve.

5.2 I-Operating Thrust: Kunezinhlobo ezimbili eziyinhloko ze-actuator ye-valve: eyodwa iwukukhipha i-torque ngokuqondile ngaphandle kwe-thrust plate, kanti enye iwukuba ne-thrust plate ene-torque ephumayo eguqulelwe ekuphusheni okuphumayo yi-stem nut ku-thrust plate.

5.3 Inombolo Yokuzungezisa Umgodi Wokukhipha: inombolo yokuzungezisa yedivayisi kagesi ye-valve yenani lamajika anobubanzi obuncane be-valve, i-valve stem pitch, inani lemicu, ukubala ngokuya ngo-m = H / Zs (m inombolo ephelele ijika ukuthi idivayisi kagesi kufanele yanelise, h ubude bokuvula i-valve, s i-stem drive thread thread pitch, u-Z uyinhloko yentambo ye-stem) .

5.4 I-Stem Diameter: I-valve ye-stem enamajika amaningi ayikwazi ukuhlanganiswa uma ubukhulu be-stem ububanzi obuvunyelwe idivayisi kagesi bungakwazi ukudlula esiqwini se-valve enikeziwe.Ngakho-ke, i-diameter ye-shaft engenalutho yedivayisi kagesi kufanele ibe nkulu kune-stem stem stem diameter ye-valve ye-stem.Kwamanye ama-valve ajikelezayo kanye nama-valve angama-valve angama-non-return, nakuba ungacabangi ububanzi be-stem ngenkinga, kodwa ekukhetheni kufanele futhi ucabange ngokugcwele ububanzi be-stem kanye nosayizi wokhiye, ukuze umhlangano usebenze kahle.

5.5 Isivinini Sokukhiphayo: Isivinini sokuvula nokuvala ivalvu uma sishesha kakhulu, kulula ukukhiqiza into esando samanzi.Ngakho-ke, kufanele kusekelwe ezimweni ezahlukene zokusetshenziswa, ukukhethwa kokuvula nokuvala isivinini esifanele.