Ebunjiniyela bamapayipi, ukukhethwa okulungile kwamavalvu kagesi kungenye yezimo zesiqinisekiso ukuhlangabezana nezidingo zokusetshenziswa. Uma i-valve kagesi esetshenzisiwe ingakhethiwe kahle, ngeke nje ithinte ukusetshenziswa, kodwa futhi ilethe imiphumela emibi noma ukulahlekelwa okukhulu, ngakho-ke, ukukhethwa okulungile kwama-valve kagesi ekwakhiweni kobunjiniyela bepayipi.
Indawo yokusebenza ye-valve kagesi
Ngaphandle kokunaka imingcele yepayipi, ukunakwa okukhethekile kufanele kukhokhwe ezimweni zemvelo zokusebenza kwayo, ngoba idivayisi kagesi ku-valve kagesi iyimishini ye-electromechanical, futhi isimo sayo sokusebenza sithinteka kakhulu endaweni yayo yokusebenza. Imvamisa, indawo yokusebenza ye-valve kagesi imi kanje:
1. Ukufakwa kwangaphakathi noma ukusetshenziswa kwangaphandle ngezinyathelo zokuzivikela;
2. Ukufakwa kwangaphandle endaweni evulekile, enomoya, isihlabathi, imvula namazolo, ukukhanya kwelanga nokunye ukuguguleka;
3. Inegesi evuthayo noma eqhumayo noma indawo yothuli;
4. Indawo eshisayo eshisayo, eyomile;
5. Izinga lokushisa lendawo yephayiphi liphakeme lifinyelela ku-480°C noma ngaphezulu;
6. Izinga lokushisa lendawo lingaphansi kuka -20°C;
7. Kulula ukugcwala noma ukucwiliswa emanzini;
8. Indawo enezinto ezikhipha imisebe (izitshalo zamandla enuzi kanye namadivayisi okuhlola impahla ekhipha imisebe);
9. Imvelo yomkhumbi noma idokhu (enesifutho sikasawoti, isikhunta, nomswakama);
10. Izikhathi ezinokudlidliza okukhulu;
11. Izikhathi ezivame ukusha;
Kuma-valve kagesi ezindaweni ezibalulwe ngenhla, isakhiwo, izinto zokwakha kanye nezinyathelo zokuzivikela zamadivayisi kagesi zihlukile. Ngakho-ke, idivayisi kagesi ye-valve ehambisanayo kufanele ikhethwe ngokuya ngendawo yokusebenza eshiwo ngenhla.
Izidingo zokusebenza zikagesiama-valve
Ngokwezidingo zokulawula ubunjiniyela, i-valve kagesi, umsebenzi wokulawula ugcwaliswa yidivayisi kagesi. Inhloso yokusebenzisa amavalvu kagesi ukuthola isilawuli sikagesi esingasebenzisi mathupha noma isilawuli sekhompyutha sokuvula, ukuvala nokulungisa ukuxhumana kwamavalvu. Imishini kagesi yanamuhla ayisetshenziselwa nje ukonga abasebenzi. Ngenxa yomehluko omkhulu emsebenzini kanye nekhwalithi yemikhiqizo evela kubakhiqizi abahlukene, ukukhethwa kwamadivayisi kagesi kanye nokukhethwa kwama-valve kubaluleke ngokulinganayo kuphrojekthi.
Ukulawula ngogesi kagesiama-valve
Ngenxa yokuthuthukiswa okuqhubekayo kwezidingo ze-automation yezimboni, ngakolunye uhlangothi, ukusetshenziswa kwama-valve kagesi kuyanda, futhi ngakolunye uhlangothi, izidingo zokulawula ama-valve kagesi ziya ngokuya ziba nzima nakakhulu. Ngakho-ke, ukuklanywa kwama-valve kagesi ngokwemibandela yokulawula kagesi nakho kubuyekezwa njalo. Ngokuqhubeka kwesayensi nobuchwepheshe kanye nokuthandwa nokusetshenziswa kwamakhompiyutha, izindlela ezintsha nezihlukene zokulawula ugesi zizoqhubeka nokuvela. Ukuze ulawule jikelele kagesii-valve, ukunakwa kufanele kukhokhwe ekukhethweni kwemodi yokulawula ye-valve kagesi. Isibonelo, ngokuya ngezidingo zephrojekthi, noma ukusebenzisa imodi yokulawula emaphakathi, noma imodi yokulawula eyodwa, noma ngabe ixhumanisa nezinye izinto zokusebenza, ukulawulwa kohlelo noma ukusetshenziswa kokulawulwa kohlelo lwekhompiyutha, njll., umgomo wokulawula uhlukile uhlukile. . Isampula yomkhiqizi wedivayisi kagesi yevalvu inikeza kuphela umgomo ojwayelekile wokulawula ugesi, ngakho-ke umnyango wokusebenzisa kufanele wenze ukudalulwa kobuchwepheshe nomkhiqizi wedivayisi kagesi futhi ucacise izidingo zobuchwepheshe. Ngaphezu kwalokho, lapho ukhetha i-valve kagesi, kufanele ucabange ukuthi uthenge isilawuli se-valve kagesi esengeziwe. Ngoba ngokuvamile, isilawuli sidinga ukuthengwa ngokwehlukana. Ezimweni eziningi, uma usebenzisa isilawuli esisodwa, kuyadingeka ukuthenga isilawuli, ngoba kulula kakhulu futhi ishibhile ukuthenga isilawuli kunokuklama nokusikhiqiza ngumsebenzisi. Lapho ukusebenza kokulawula kukagesi kungakwazi ukuhlangabezana nezidingo zedizayini yobunjiniyela, umenzi kufanele ahlongozwe ukuthi alungise noma adizayine kabusha.
Idivayisi kagesi ye-valve iyidivayisi eqaphela ukuhlelwa kwe-valve, isilawuli esizenzakalelayo nesilawuli kude*, futhi inqubo yayo yokunyakaza ingalawulwa inani le-stroke, i-torque noma i-axial thrust. Njengoba izici zokusebenza nezinga lokusebenzisa le-actuator ye-valve lincike ohlotsheni lwe-valve, ukucaciswa kokusebenza kwedivayisi, kanye nendawo ye-valve epayipini noma impahla, ukukhethwa okufanele kwe-actuator ye-valve kubalulekile ukuvimbela ukugcwala ngokweqile ( itorque esebenzayo iphakeme kunetorque yokulawula). Ngokuvamile, isisekelo sokukhethwa okulungile kwamadivaysi kagesi we-valve simi kanje:
Itorque esebenzayoItorque esebenzayo iyipharamitha eyinhloko yokukhetha idivayisi kagesi yevalvu, futhi itorque ephumayo yedivayisi kagesi kufanele ibe izikhathi ezingu-1.2~1.5 zetorque yokusebenza kwevalvu.
Kunezinhlaka ezimbili zomshini eziyinhloko zokusebenzisa idivayisi kagesi ye-thrust valve: eyodwa ayinayo i-thrust disc futhi ikhipha i-torque ngokuqondile; Enye iwukumisa i-thrust plate, bese i-torque ephumayo iguqulwa ibe i-thrust ephumayo nge-stem nut ku-thrust plate.
Inombolo yokuphenduka okujikelezayo kwe-shaft ephumayo yedivayisi kagesi ye-valve ihlobene nobubanzi be-valve, ukuphakama kwesiqu kanye nenani lezintambo, okufanele zibalwe ngokuya nge-M=H/ZS (M ingqikithi yenani lokuzungezisa idivayisi kagesi okufanele ihlangabezane nalo, H ubude bokuvulwa kwevalvu, S iphimbo lentambo yokudluliswa kwesiqu se-valve, futhi u-Z uyinombolo yamakhanda anentamboi-valveisiqu).
Uma ububanzi be-stem enkulu obuvunyelwe idivayisi kagesi ayikwazi ukudlula esiqwini se-valve ehlomile, ayikwazi ukuqoqwa ku-valve kagesi. Ngakho-ke, ububanzi bangaphakathi bomgodi wokuphuma ongenalutho we-actuator kufanele bube bukhulu kunobubanzi obungaphandle besiqu se-valve yenduku evulekile. Nge-valve yenduku emnyama ku-valve ye-rotary eyingxenye kanye ne-valve yokujika okuningi, nakuba inkinga edlulayo yobubanzi be-valve stem ingacatshangwa, ububanzi besiqu se-valve kanye nobukhulu bokhiye wokhiye kufanele futhi kucatshangelwe ngokugcwele lapho kukhethwa, ukuze ikwazi ukusebenza ngokujwayelekile ngemva kokuhlanganisa.
Uma isivinini sokuvula nokuvala se-valve yesivinini esiphumayo sishesha kakhulu, kulula ukukhiqiza isando samanzi. Ngakho-ke, isivinini esifanele sokuvula nokuvala kufanele sikhethwe ngokuvumelana nezimo ezihlukene zokusetshenziswa.
Ama-actuator e-valve anezidingo zawo ezikhethekile, okungukuthi kufanele akwazi ukuchaza amandla e-torque noma i-axial. Ngokuvamilei-valveama-actuator asebenzisa ama-couplings anciphisa i-torque. Lapho usayizi wedivayisi kagesi unqunywa, i-torque yayo yokulawula nayo iyanqunywa. Ngokuvamile igijima ngesikhathi esinqunyiwe, injini ngeke ilayishwe ngokweqile. Kodwa-ke, uma izimo ezilandelayo zenzeka, zingase ziholele ekulayisheni ngokweqile: okokuqala, amandla kagesi aphansi, futhi i-torque edingekayo ayikwazi ukutholakala, ukuze injini imise ukujikeleza; okwesibili ukulungisa ngephutha indlela yokunciphisa i-torque ukuze ibe nkulu kunetorque yokuma, okuholela ekuqhubekeni kwetorque ngokweqile nokumisa injini; okwesithathu ukusetshenziswa kwezikhawu, futhi ukunqwabelana kokushisa okukhiqizwayo kudlula inani elivumelekile lokukhuphuka kwezinga lokushisa lemoto; Okwesine, ukujikeleza kwendlela yokunciphisa i-torque yehluleka ngesizathu esithile, okwenza i-torque ibe nkulu kakhulu; Okwesihlanu, izinga lokushisa le-ambient liphezulu kakhulu, elinciphisa amandla okushisa enjini.
Esikhathini esidlule, indlela yokuvikela i-motor kwakuwukusebenzisa ama-fuses, ama-relays adlulile, ama-thermal relays, ama-thermostats, njll., kodwa lezi zindlela zinezinzuzo zazo kanye nebubi. Ayikho indlela yokuvikela enokwethenjelwa yempahla yokulayisha eguquguqukayo njengamadivayisi kagesi. Ngakho-ke, inhlanganisela ehlukahlukene kufanele yamukelwe, engafingqwa ngezinhlobo ezimbili: eyodwa ukwahlulela ukwanda noma ukuncipha kwamandla okufakwayo wenjini; Okwesibili ukwahlulela isimo sokushisa semoto ngokwayo. Kunoma iyiphi indlela, noma iyiphi indlela ibheka umkhawulo wesikhathi onikeziwe womthamo wokushisa wenjini.
Ngokuvamile, indlela yokuvikela eyisisekelo yokulayisha ngokweqile yilezi: ukuvikela ukugcwala ngokweqile kokusebenza okuqhubekayo noma ukugijima kwenjini, kusetshenziswa i-thermostat; Ukuze kuvikelwe i-motor stall rotor, kwamukelwa ukudluliselwa okushisayo; Ngezingozi ze-short-circuit, ama-fuse noma ama-overcurrent relay asetshenziswa.
Ihlezi iqinileizivalo uvemvane,i-valve yesango, hlola i-valveimininingwane, ungaxhumana nathi nge-whatsapp noma i-E-mail.
Isikhathi sokuthumela: Nov-26-2024
