Isengezo esiyinhloko se-actuator yomoya yi-ivalvu yokulawulai-positioner. Isebenza ngokubambisana ne-actuator yomoya ukwandisaukuchaneka kwesikhundla se-valve, nciphisa imiphumela yamandla angalingani kanye nokungqubuzana kwesiqu sendawo, futhi uqiniseke ukuthi i-valve isabela esignalini yomlawuli. finyelela indawo efanele.

Lezi zimo ezilandelayo zidinga ukusetshenziswa kwe-locator:
Uma ingcindezi ephakathi nendawo iphezulu futhi kunomehluko omkhulu wengcindezi; 2. Uma ubukhulu bevalvu yokulawula bukhulu (DN> 100);
3. Ivalvu elawula amazinga okushisa aphezulu noma aphansi;
4. Uma kubalulekile ukusheshisa umsebenzi wevalvu yokulawula;
5. Uma izimpawu ezijwayelekile zisetshenziswa ukushayela ama-actuator anezinhlobo ze ...
6. Noma nini lapho kusetshenziswa ukulawula ububanzi obuhlukanisiwe;
7. Uma ivalvu iphendulwa, iziqondiso zokuvala umoya kanye neziqondiso zokuvula umoya ziyashintshana;
8. Uma ikhamera yesimo idinga ukuguqulwa ukuze kushintshwe izici zokugeleza kwevalvu;
9. Uma kufanele kufezwe isenzo esilinganayo, akukho mshini wokusebenza we-piston noma indlela yokusebenza kwentwasahlobo;
10. Ama-valve positioners kagesi-omoya kumele asatshalaliswe lapho kusetshenziswa amasignali kagesi ukulawula ama-actuator omoya.

I-valve kagesi: I-valve ye-solenoid kumele ifakwe ohlelweni uma kudingeka ukulawula uhlelo noma ukulawula okunezikhundla ezimbili. Ukusebenzisana phakathi kwe-valve ye-solenoid ne-valve elawulayo kumele kucatshangelwe lapho kukhethwa i-valve ye-solenoid ngaphezu komthombo wamandla we-AC ne-DC, i-voltage, kanye nemvamisa. Ingaba nokusebenza "okuvame ukuvuleka" noma "okuvame ukuvalwa".
Amavalvu amabili e-solenoid angasetshenziswa ngesikhathi esifanayo uma kudingeka ukwandisa umthamo wevalvu ye-solenoid ukuze kuncishiswe isikhathi sokusebenza, noma ivalvu ye-solenoid ingasetshenziswa njengevalvu yokushayela kanye ne-relay ye-pneumatic enamandla amakhulu.

I-relay yomoya: I-relay yomoya uhlobo lwe-amplifier yamandla engadlulisela isignali yokucindezela komoya endaweni ekude ukuze kususwe ukulibaziseka okubangelwa ukusabalala kwephayiphi yesignali. Phakathi komlawuli kanye ne-valve elawula insimu, kunomsebenzi owengeziwe wokukhulisa noma ukunciphisa isandiso. Isetshenziswa ngokuyinhloko phakathi kwe-transmitter yensimu kanye nedivayisi elawulayo egumbini lokulawula eliphakathi.

isiguquli:
Isiguquli sihlukaniswe saba yi-gas-electric converter kanye ne-electric-gas converter. Umsebenzi waso ukuqaphela ukuguqulwa okuhlangene kobudlelwano obuthile phakathi kwe-gas kanye ne-electric signals. Sisetshenziswa kakhulu ukuguqula ukuguqulwa kwe-0~10mA noma 4~20mA signal kagesi noma i-0 ~ 100KPa signal gas ibe yi-0 ~ 10mA noma 4 ~ 20mA signal kagesi.

umlawuli wezihlungi zomoya:

Isinamathiseli sedivayisi esisetshenziswa emishinini yokwenza izinto ngokuzenzakalela yezimboni yivalvu yokwehlisa umfutho wesihlungi somoya. Umsebenzi wayo oyinhloko ukuqinisa umfutho ezingeni elifunekayo ngenkathi uhlunga futhi uhlanza umoya ocindezelwe ovela kwi-compressor yomoya. Isilinda somoya, imishini yokufafaza, imithombo yokuphakelwa komoya, kanye namadivayisi okuqinisa umfutho wamathuluzi amancane omoya kuyizibonelo zezinsimbi zomoya namavalvu e-solenoid angasetshenziswa kuwo.

Ivalvu yokuphepha (ivalvu ezikhiyayo)

I-valve ezikhiyayo iyindlela egcina i-valve isendaweni yayo. Uma umthombo womoya uhluleka, idivayisi ingacima isignali yomthombo womoya ukuze igcine i-membrane chamber noma isignali yokucindezela yesilinda ezingeni layo langaphambi kokwehluleka kanye nendawo ye-valve ekusethweni kwayo kwangaphambi kokwehluleka. Kumphumela wokuvikelwa kwesikhundla.

isidluliseli sesikhundla sama-valve
Uma i-valve elawulayo ikude negumbi lokulawula, kuyadingeka ukuhlomisa i-transmitter yesikhundla se-valve, eguqula ukufuduka kokuvulwa kwe-valve ibe isignali kagesi bese iyithumela egumbini lokulawula ngokuhambisana nomthetho onqunyiwe, ukuze kuqondwe ngokunembile indawo yokushintsha ye-valve ngaphandle kokuya endaweni. Isignali ingaba isignali eqhubekayo emele noma yikuphi ukuvulwa kwe-valve noma ingabhekwa njengokusebenza kokubuyisela emuva kwe-valve positioner.

Ukushintsha kokuxhumana ngesikhathi sohambo
Iswishi yomkhawulo iyisakhi esidlulisela isignali yesikhombisi ngasikhathi sinye futhi sibonise izikhundla ezimbili eziqine kakhulu zeswishi yevalvu. Igumbi lokulawula lingabika isimo seswishi sevalvu ngokusekelwe kulesi signali futhi lithathe isinyathelo esifanele.