I-actuator ye-pneumaticisisekeli esiyinhloko yi-valve positioner elawulayo. Isebenza ngokuhambisana ne-actuator yomoya ukuze kwandiswe ukunemba kokuma kwe-valve, inciphise imiphumela yamandla aphakathi nendawo nokungqubuzana kwesiqu, futhi iqinisekise ukuthi i-valve isabela kusignali yomlawuli. thola indawo efanele.

Lezi zimo ezilandelayo zenza kudingeke ukuthi kusetshenziswe indawo yokubuka indawo:

1. Uma kunomehluko omkhulu wengcindezi kanye nomfutho ophakathi nendawo;

2. Uma izinga levalvu elawulayo likhulu (DN > 100);

3. Ivalvu elawula izinga lokushisa eliphezulu noma eliphansi;

4. Lapho kubalulekile ukusheshisa umsebenzi wevalvu elawulayo;

5. Uma amasiginali ajwayelekile asetshenziswa ukushayela ama-actuator ngezigaba zentwasahlobo ezingajwayelekile (ububanzi basentwasahlobo ngaphandle kuka-20-100KPa);

6. Noma nini lapho kusetshenziswa ukulawulwa kobubanzi bokuhlukanisa;

7. Uma i-valve iphendulwa, izikhombisi-ndlela zomoya-ukuvala kanye ne-air-to-open zishintshashintsha;

8. Lapho i-positioner cam idinga ukushintshwa ukuze kushintshwe izici zokugeleza kwevalvu;

9. Uma kufunwa isenzo esilinganayo, asikho isidingo se-spring noma i-piston actuator;

10. Izibonisi zamavalvu zikagesi-womoya kufanele zisatshalaliswe lapho kusetshenziswa amasignali kagesi ukulawula ama-actuator womoya.

I-valve ye-electromagnetic:
I-valve ye-solenoid kufanele ifakwe ohlelweni lapho ukulawulwa kohlelo noma ukulawulwa kwezindawo ezimbili kuyadingeka. Ukusebenzisana phakathi kwe-valve ye-solenoid kanye ne-valve elawulayo kufanele kucatshangelwe lapho kukhethwa i-solenoid valve ngaphezu komthombo wamandla we-AC ne-DC, i-voltage, kanye nemvamisa. Ingaba nomsebenzi "ovulekile ngokujwayelekile" noma "okuvalwe ngokujwayelekile".
Ama-valve amabili e-solenoid angasetshenziswa ngokuhambisana uma kudingekile ukwandisa umthamo we-solenoid valve ukuze kuncishiswe isikhathi sokusebenza, noma i-solenoid valve ingasetshenziswa njenge-valve yokushayela ngokuhambisana ne-relay yomoya yomthamo omkhulu.
I-pneumatic relay:
I-pneumatic relay uhlobo lwesikhulisi samandla esingadlulisa isignali yomfutho womoya kude ukuze kuncishiswe isikhathi esilethwa ukwelulwa kwepayipi lesignali. Phakathi kwesilawuli kanye ne-valve elawula insimu, kunomsebenzi owengeziwe wokukhulisa noma ukunciphisa isignali. Isetshenziswa ngokuyinhloko phakathi kwe-transmitter yasensimini kanye nedivayisi yokulawula egumbini lokulawula elimaphakathi.

isiguquli:
Kunezinhlobo ezimbili zama-converter: i-converter yegesi kagesi kanye ne-gas-electric converter. Ukuqaphela ukuguqulwa okuhambisanayo kobudlelwane obuthile phakathi kwegesi namasignali kagesi yilokho okwenzayo. Isetshenziswa kakhulu ukuguqula amasignali egesi angu-0 100KPa abe amasignali kagesi angu-0 10 mA noma 0 4 mA, noma amasignali kagesi angu-0 10 mA noma angu-4 mA abe amasignali kagesi angu-0 10 mA noma angu-4 mA.

Isilawuli sesihlungi somoya:
Okunamathiselwe kwedivaysi esetshenziswa nemishini ye-industrial automation ivalvu yokwehlisa ingcindezi yokuhlunga umoya. Umsebenzi wawo oyinhloko uwukusimamisa ingcindezi ezingeni olifunayo ngenkathi ihlunga futhi ihlanza umoya ocindezelwe ophuma ku-compressor yomoya. Isilinda somoya, okokusebenza kokufafaza, imithombo yokuphakelwa komoya, nemishini yokusimamisa ingcindezi yamathuluzi amancane omoya ezinye zezibonelo zamathuluzi omoya namavalvu e-solenoid angasetshenziswa kuwo.

I-valve yokuzikhiya (i-valve yokuphepha):
I-valve yokuzikhiya iwumshini ogcina i-valve isendaweni. Uma umthombo womoya wehluleka, idivayisi ingacisha isignali yomthombo womoya ukuze igcine ikamelo le-membrane noma isignali yokucindezela yesilinda ezingeni layo langaphambi kokwehluleka kanye nendawo yevalvu endaweni yayo yangaphambi kokwehluleka. Emthelela wokuvikela isikhundla.

i-valve position transmitter
Lapho i-valve yokulawula ikude negumbi lokulawula, kuyadingeka ukuhlomisa i-valve position transmitter, eguqula ukugudluka kwe-valve yokuvula ibe isignali kagesi futhi iyithumele ekamelweni lokulawula ngokuvumelana nomthetho onqunywe kusengaphambili, ukuze qonda kahle indawo yokushintsha ye-valve ngaphandle kokuya kusayithi. Isignali ingase ibe isignali eqhubekayo emele noma yikuphi ukuvulwa kwe-valve noma ingase ithathwe njengomsebenzi wokuhlehlisa isihleli se-valve.

Iswishi yokuvakasha (isixhumi)
Iswishi yomkhawulo iyingxenye edlulisela ngesikhathi esisodwa isignali yenkomba futhi ikhombisa izindawo ezimbili ezeqisayo zeswishi ye-valve. Igumbi lokulawula lingabika isimo sokushintshwa kwe-valve ngokusekelwe kule signali futhi lithathe isinyathelo esifanele.