Isimiso sokusebenza kanye nemodi yokulawula ye-valve ezenzakalelayo

I-valve ezenzakalelayo luhlobo lwe-valve olungakwazi ukulungisa ngokuzenzakalelayo ukugeleza, ingcindezi, izinga lokushisa kanye neminye imingcele ngokusho kokushintsha kwemingcele yesistimu, esetshenziswa kabanzi ku-petroleum, imboni yamakhemikhali, i-metallurgy, ukwakhiwa nezinye izimboni. Leli phepha lizohlaziya isimiso sokusebenza kanye nemodi yokulawula ye-valve ezenzakalelayo kusuka ezicini ezimbili.

Okokuqala, isimiso sokusebenza
Umgomo wokusebenza kwe-valve othomathikhi ikakhulukazi ngokusebenzisa inzwa ukuthola ukuguqulwa kwemingcele yesistimu, isignali etholiwe idluliselwa ku-actuator, i-actuator ilungisa ukuvulwa kwe-valve ngokuvumelana nesignali, ukuze kuzuzwe ukulungiswa okuzenzakalelayo kokugeleza. , ingcindezi, izinga lokushisa kanye neminye imingcele.

Inzwa engu-1: Inzwa iyidivayisi eguqula amanani ahlukahlukene aphathekayo ohlelweni (njengamazinga okushisa, ukucindezela, ukugeleza, njll.) kube amasignali kagesi. Izinzwa ezivamile ama-thermocouples, ama-thermal resistors, izinzwa zokucindezela, izinzwa zokugeleza nokunye.

2. I-Actuator: I-actuator iyisisetshenziswa esiguqula izimpawu zikagesi zibe ukunyakaza komshini futhi sisetshenziselwa ukulungisa ukuvuleka kwevalvu. Ama-actuator ajwayelekile ama-actuator kagesi, ama-pneumatic actuators, ama-hydraulic actuators nokunye.

3. I-Valve: I-valve iyithuluzi elilawula ukugeleza, ingcindezi, izinga lokushisa kanye neminye imingcele ye-fluid medium. Ama-valve avamile ama-valve embulunga, ama-valve alawulayo, ama-valve okuphepha, ama-valve okunciphisa ingcindezi nokunye.

2. Imodi yokulawula
Izindlela zokulawula ama-automatic valves ikakhulukazi zimi kanje:
1. Ukulawula okuvula: Ngokushintsha ukuvulwa kwe-valve, lungisa ukugeleza, ukucindezela, izinga lokushisa kanye neminye imingcele ye-fluid medium. Izindlela ezijwayelekile zokulawula ukuvulwa zifaka ukulawulwa kokuvula okwenziwa ngesandla, ukulawulwa kokuvula ugesi, ukulawulwa kokuvula umoya nokunye.

2. Ukulawulwa kwe-Bit: ukuvulwa kwe-valve kulawulwa endaweni ehleliwe yokulawula ukugeleza, ingcindezi, izinga lokushisa kanye neminye imingcele ye-fluid medium. Izindlela ezijwayelekile zokulawula ibhithi zihlanganisa i-manual bit control, i-electric bit control, i-pneumatic bit control nokunye.

3. Ukulawulwa kokulungiswa: Ngokulungisa ukuvulwa kwe-valve, ukugeleza, ingcindezi, izinga lokushisa kanye neminye imingcele ye-fluid medium ingalungiswa ngokuqhubekayo. Izindlela zokulawula ezijwayelekile zifaka ukulawulwa kwe-proportional integral-differential (PID), ukulawula okungaqondakali, ukulawulwa kwenethiwekhi ye-neural nokunye.

4. Ukulawula okuhlakaniphile: Ngokusetshenziswa kobuchwepheshe bobuhlakani bokwenziwa, ukuze kuzuzwe ukulawula okukhaliphile kwamavalvu azenzakalelayo. Izindlela zokulawula ezihlakaniphile ezivamile zihlanganisa uhlelo lochwepheshe, i-algorithm yofuzo, inethiwekhi ye-neural yokwenziwa nokunye.

Ukufingqa, umgomo wokusebenza kwe-valve othomathikhi ukuthola izinguquko kumapharamitha wesistimu ngenzwa, ukudlulisa isignali etholiwe ku-actuator, futhi i-actuator ilungisa ukuvulwa kwe-valve ngokuvumelana nesignali, ukuze ibone okuzenzakalelayo. ukulungiswa kokugeleza, ingcindezi, izinga lokushisa kanye neminye imingcele. Izindlela zokulawula ama-valve othomathikhi ngokuyinhloko zihlanganisa ukulawulwa kokuvula, ukulawulwa kwebhithi, ukulawula ukulungisa nokulawula okuhlakaniphile, njll. Lezi zindlela zokulawula zingahlangabezana nezidingo zokulawula ama-automatic valves ngaphansi kwezimo ezahlukene zokusebenza.