Isitholi sendawo
Izingxenye ze-actuator yomoya kufanele ifaniswe ne-actuator uma isetshenziswa. Kungathuthukisa ukunemba kwesikhundla kwe-valve futhi kwehlise nomthelela wamandla okuxubana kwesiqu se-valve namandla angalinganiswanga kwaphakathi, ukuze kuqinisekiswe ukubekwa kahle kwe-valve ngokuya ngesignali enikezwe umlawuli. Ngaphansi kwaziphi izimo kudingeka ukuthi ulungiselele indawo yokubeka i-pneumatic flow control valve:
1. Lapho ingcindezi ephakathi iphakeme futhi umehluko wengcindezi mkhulu;
2. Lapho ubukhulu be-valve elawulayo bukhulu kakhulu (DN> 100);
3. Ukushisa okuphezulu noma ukushisa okuphansi okulawula i-valve;
4. Lapho kudingeka ukwandisa ijubane lokusebenza kwe-valve elawulayo;
5. Lapho kudingeka ukuhlukaniswa kokulawula;
6. Lapho kudingeka isignali ejwayelekile ukusebenzisa i-actuator yasentwasahlobo engajwayelekile (ibanga lentwasahlobo lingaphandle kwama-20 ～ 100KPa);
7. Lapho uqaphela isenzo esiphindayo se-valve (uhlobo lokuvala umoya kanye nohlobo oluvuleka emoyeni luyashintshana);
8. Lapho izici zokugeleza kwe-valve elawulayo zidinga ukuguqulwa (i-positioner cam ingashintshwa);
9. Lapho ingekho i-actuator yasentwasahlobo noma i-piston actuator, kuyadingeka ukufeza isenzo esilinganayo;
10. Uma usebenzisa amasiginali kagesi ukusebenzisa ama-ptuatic actuators, amandla kumele asatshalaliswe endaweni yokumisa i-pneumatic valve positioner.
I-valve kagesi
Lapho uhlelo ludinga ukufeza ukulawulwa kohlelo noma ukulawulwa kwezikhundla ezimbili, idinga ukufakelwa i-valve ye-solenoid. Lapho ukhetha i-valve ye-solenoid, ngaphezu kokucabanga ukunikezwa kwamandla kagesi we-AC ne-DC, i-voltage nemvamisa, kufanele kunakwe ebudlelwaneni obuphakathi kwe-valve ye-solenoid ne-valve elawulayo. Ngokuvamile kuvulwe noma kuvalwe ngokujwayelekile kungasetshenziswa.
Uma udinga ukwandisa umthamo we-valve ye-solenoid ukunciphisa isikhathi sesenzo, ungasebenzisa ama-valve amabili we-solenoid ngokufana noma usebenzise i-valve ye-solenoid njenge-valve yomshayeli ngokuhlangana ne-relay-umthamo omkhulu womoya.
Edluliselwe womoya
Ukudluliswa komoya wuhlobo lwesikhulisi samandla, esingathumela isignali yengcindezi yomoya endaweni ekude, kuqede ukungezwa okubangelwe ukukhuliswa kwepayipi lesiginali. Isetshenziswa kakhulu phakathi kwesidlulisi sensimu nethuluzi elilawulayo egumbini lokulawula eliphakathi, noma phakathi komlawuli nensimbi elawula insimu. Omunye umsebenzi ukukhulisa noma ukunciphisa isignali.
isiguquli
Isiguquli sihlukaniswe ngesiguquli segesi nogesi kanye nesiguquli sikagesi kagesi, futhi umsebenzi waso ukubona ukuguqulwa kokuhlangana kobudlelwano obuthile phakathi kwezimpawu zegesi nezikagesi. Lapho usebenzisa amasiginali kagesi ukuphatha ama-actuator womoya, isiguquli singaguqula amasiginali kagesi abe amasignali ehlukene womoya.
Ingcindezi yomoya ehlisa i-valve
Ingcindezi yomoya ehlisa ingcindezi iyinsiza esezimbonini ezishintshayo. Umsebenzi wawo omkhulu ukuhlunga nokuhlanza umoya ocindezelweyo kusuka ku-air compressor nokuqinisa ingcindezi ngenani elidingekayo. Ingasetshenziselwa izinsimbi ezahlukahlukene zomoya namaphayiphu we-solenoid. , Ukuhlinzekwa komoya nedivayisi eqinisa amandla amasilinda, imishini yokufafaza namathuluzi amancane womoya.
I-valve yokuzikhiya (i-position valve)
I-valve yokuzikhiya iyithuluzi eligcina isikhundla se-valve. Lapho umthombo womoya wehluleka, idivaysi inganqamula isignali yomthombo womoya ukugcina isignali yengcindezi yegumbi le-membrane noma isilinda kusimo ngokushesha ngaphambi kokwehluleka, ngakho-ke indawo ye-valve nayo igcinwa isendaweni ngaphambi kokuhluleka.
Valve isikhundla Transmitter
Lapho i-valve elawulayo ikude kakhulu negumbi lokulawula, ukuze uqonde ngokunembile indawo yokushintsha kwe-valve ngaphandle kwesiza, kuyadingeka ukuhlomisa i-valve position transmitter. Isiginali ingaba isignali eqhubekayo ekhombisa noma yikuphi ukuvulwa kwe-valve, noma ingathathwa njengesenzo esiphindayo se-valve positioner.
Iswishi yokuhamba (isiphenduli)
Iswishi yokuhamba ikhombisa izikhundla ezimbili ezeqisayo zeshintshi le-valve bese ithumela isignali ekhombisa ngasikhathi sinye. Ngokuya ngalesi siginali, igumbi lokulawula lingacisha isimo sokushintsha kwe-valve ukuze kuthathwe izinyathelo ezihambisanayo.
Isikhathi Iposi: Oct-08-2021