Ukusetshenziswa kwe-valve positioner ehlakaniphile ohlelweni lokulawula oluzenzakalelayo lwesitshalo se-petrochemical Ukuhlaziywa kwesimo se-valve esihlakaniphile nokuhlaziywa kwamaphutha okuvamile

Ukusetshenziswa kwe-valve positioner ehlakaniphile ohlelweni lokulawula oluzenzakalelayo lwesitshalo se-petrochemical Ukuhlaziywa kwesimo se-valve esihlakaniphile nokuhlaziywa kwamaphutha okuvamile Kuhlelo lokulawula okuzenzakalelayo lwesitshalo se-petrochemical, ukukhethwa kwe-valve elawulayo kubaluleke kakhulu ekunembeni, ukusetshenziswa kwayo kuthinta ikhwalithi yemikhiqizo, futhi ihlobene nokuphepha kokukhiqizwa kwezitshalo. I-Dushanzi VINYL itshala idivayisi ngayinye esebenzisa ama-valve alawulayo kuhlanganise nabakhiqizi abahlukahlukene bezinhlobo ezahlukene zemikhiqizo. Kodwa ingxenye enkulu yesilawuli efakiwe iwuhlobo oluvamile lwe-valve positioner. I-FIELDVUE i-valve positioner ehlakaniphile ekhiqizwe yi-FISHER-ROSEMOUNT Company manje isetshenziswa efektri yaseDushanzi. Ngemva kokusebenza okungaphezu konyaka owodwa, ukusebenza, ukusetshenziswa, ukusebenza kanye nenani lesilinganiso se-FIELDVUE sokubeka ivalvu ehlakaniphile kuqhathaniswa naleyo ye-valve positioner evamile Ivalvu elawulayo enendawo evamile ifakwe ivalve elawulayo enendawo ehlakaniphile Iphutha eliyisisekelo ingaphansi kwama-20% ohambo futhi ingaphansi kuka-0.5% wohambo Ukuzinza kweValve kuzinzile futhi kuzinzile ngokwedlulele Ukulungiswa kweManuwali esizeni Ukulungiswa esizeni, kukhabhinethi noma ekuxhumaneni ne-DCS ngekhelibhutha Umthombo wesiginali 4 ~ 20mA noma isignali yomoya isignali ye-analog noma isignali yedijithali Ukusebenza/intengo ephezulu kunephansi 1 FIELDVUE isimiso sokusebenza sevalvu ehlakaniphile nezici 1.1 Izimiso zochungechunge lwe-Intelligent Locator FIELDVUE Izilawuli ze-valve zedijithali zinesisekelo se-modular esingashintshwa kalula endaweni ngaphandle kokukhipha izintambo zasendle noma imigudu. Isisekelo samamojula sihlanganisa ama-submodule: Iziguquli ze-I/P; PWB (ibhodi lesifunda eliphrintiwe) umhlangano; I-pneumatic repeater; Ishidi leziyalezo. Isisekelo semojuli singahlanganiswa kabusha ngokushintshanisa amamojula angaphansi. Isilawuli sevalvu yedijithali yochungechunge lwe-FIELDVUE sithola amasiginali wokufaka namandla kagesi ngezintambo ezisontekile ebhokisini letheminali ngesikhathi esisodwa ku-submodule yomhlangano we-PWB, lapho ixhunywe khona nemingcele eminingi efana nezixhumanisi ze-node, imikhawulo kanye namanye amanani ekugoqeni kwezingxenye eziningi. -ukwenza umugqa. I-submodule yengxenye ye-PWB ibe isithumela amasignali kumojula encane yesiguquli se-I/P. Isiguquli se-I/P siguqula isignali yokufaka ibe isignali ye-barometric. Isignali yokucindezela komoya ithunyelwa ku-pneumatic repeater, ikhuliswe futhi ithunyelwe ku-actuator njengesignali ephumayo. Isignali yokuphumayo ingase izwakale ngento ezwela ukucindezela etholakala kumojuli yengxenye ye-PWB. Ulwazi lokuxilonga lwama-actuator ama-valve. IZINDAWO ZESIQINISO SESIVIVINYO NE-ACTUATOR ZISETSHENZISWA NJENGEZIMPAWU ZOKUFAKA KU-SUBMODULE YE-PWB FUTHI ZISETSHENZISWA NJENGEZIMPAWU ZEMIBUZO ESILAWULWENI ESIVIVINYO SE-DIGITAL, ENGASE FUTHI SIHLOMISE IGAUJI EKHOMBISA UMOYA KANYE FUTHI EKHOMBISA UMOYA. 1.2 Izici ezihlakaniphile ze-valve positioner ehlakaniphile 1.2.1 Ukulawulwa kolwazi lwesikhathi sangempela, ukuphepha okuthuthukisiwe kanye nezindleko ezincishisiwe 1) Thuthukisa ukulawula: ukuxhumana kwedijithali kwezindlela ezimbili kuletha ulwazi lwesimo samanje se-valve kuwe, ungathembela ku-valve ulwazi lomsebenzi ukuze lube nesisekelo sesinqumo sokulawulwa kokulawulwa kwenqubo, ukuqinisekisa ukulawula okufika ngesikhathi. 2) Thuthukisa ukuphepha: Ungakhetha imininingwane ebhokisini lesiphambano sesayithi, ebhodini letheminali noma egumbini lokulawula indawo ephephile ngokusebenzisa i-opharetha yezandla, i-PC noma indawo yokusebenza yesistimu, unciphise amathuba akho okubhekana nendawo eyingozi, futhi akudingeki hamba esizeni. 3) Ukuze kuvikelwe indawo ezungezile: umtshina wokuvuza wevalvu noma ukushintsha komkhawulo kungaxhunywa esiphethweni esiwusizo sesilawuli sevalvu yedijithali ehlakaniphile, ukuze kugwenywe izintambo ezengeziwe zensimu. Imitha izokwethusa uma umkhawulo weqiwe. 4) Ukonga ngezingxenyekazi zekhompuyutha: Uma i-FIELDVUE uchungechunge lwesimo se-valve yedijithali sisetshenziswa ezinhlelweni ezididiyelwe, isilawuli sevalvu yedijithali ye-FIELDVUE sithatha indawo yesilawuli ukuze konge ku-hardware nezindleko zokuyifaka. Uchungechunge lwe-FIELDVUE izilawuli zamavalvu edijithali zonga u-50% ekutshalweni kwezintambo, i-terminal kanye nezidingo ze-I/O. Ngesikhathi esifanayo imitha ye-FIELDVUE isebenzisa ugesi wesistimu yolayini ababili, ayidingi intambo yokuphakela amandla ehlukile nebizayo. Bashintsha amathuluzi e-analog akhona afakwe kuma-valve futhi balondoloze izindleko eziphezulu zokubeka amandla kanye nemigqa yesignali ngokuhlukana. 1.2.2 Isakhiwo esinokwethenjelwa kanye nolwazi lwe-HART 1) Isakhiwo esihlala isikhathi eside: Isakhiwo esivalwe ngokugcwele sivimbela ukudlidliza, izinga lokushisa kanye nemvelo egqwalayo ukuthi ingalithinti, futhi ibhokisi lokuhlangana lenkundla elimelana nesimo sezulu lihlukanisa izintambo zensimu ezixhumene nazo kulo lonke ithuluzi. 2) Sheshisa izinyathelo zokulungiselela ukuqalisa: Amandla okuxhumana ezindlela ezimbili zesilawuli sevalvu yedijithali ikuvumela ukuthi ukhombe ukude ithuluzi ngalinye, uhlole ukulinganisa kwayo, ubuyekeze futhi uqhathanise amarekhodi okugcina agcinwe ngaphambilini kanye nolunye ulwazi, ukuze ufinyelele umgomo ukuqala iluphu ngokushesha ngangokunokwenzeka. 3) Ukukhetha okulula kolwazi: I-FIELDVUE i-valve yedijithali ye-valve kanye ne-transmitter isebenzisa iphrothokholi yokuxhumana ye-HART ukuze ukhethe kalula ulwazi lwensimu. Bona IQINISO ESESISEKELO SENKQUBO YOKULAWULA - IVAVU YOLAWULO Uqobo Lwalo - NGOSIZO LOKUXHUMANA NGESANDLA KUVALIVU NOMA EBHOKISINI LE-FIELD JUNCTION, KANYE NGOSIZO LWEKHOMPUTHA YOMUNTU NOMA IKHONOLO YE-OPERATOR EGUMBI LOKULAWULA I-DCS. Ukwamukelwa kwephrothokholi ye-HART kusho nokuthi amamitha e-FIELDVUE angafakwa ohlelweni oludidiyelwe noma asetshenziswe njengethuluzi lokulawula elizimele. Lokhu kuzivumelanisa nezimo ezicini eziningi kwenza idizayini yesistimu isebenze kalula futhi ibe lula kungakhathaliseki ukuthi manje noma ngokuzayo. 1.2.3 Ikhono lokuzihlola wena kanye nekhono lokulawula 1) Ukuxhumana kwe-Fieldbus Zonke izilawuli ze-DVC5000f ze-valve zedijithali zifaka amakhono okuxhumana e-fieldbus, okuhlanganisa ibhulokhi yokusebenza engu-A0 kanye nokuxilongwa okulandelayo: A) Ivalvu engukhiye isebenzisa imingcele yokulandelela; B) Imingcele yesimo sempilo yensimbi; C) Ukuhlolwa okunqunywe kusengaphambili kokusebenza kwe-valve yesinyathelo sokulungiswa. Ivalvu Eyisihluthulelo ISEBENZISA IMIPHAKATHI YOKULANDA UKWELA UHAMBO LONKE LONKE LOKUHAMBA (ukuqoqwa kohambo) kanye nenani lokujika kohambo lwe-STEM (umjikelezo). Ipharamitha yezempilo yemitha ikhala uma kukhona izinkinga ngememori yemitha, iprosesa, noma umtshina. Uma inkinga seyenzekile, thola ukuthi imitha izosabela kanjani kule nkinga. Uma, uma umtshina wokucindezela uhluleka, kufanele imitha ivalwe? Ungakwazi futhi UKUKHETHA UKUTHI IKUPHI kwengxenye ukwehluleka okuzokwenza imitha livale (ukuthi inkinga inkulu ngokwanele yini ukuthi imitha ivaleke). Le miyalo yepharamitha ibikwa ngendlela yama-alamu. Ama-alamu okuqapha anganikeza inkomba esheshayo yethuluzi elingalungile, i-valve, noma inqubo. 2) Ukulawula okujwayelekile kanye nokuxilongwa Zonke izilawuli ze-DVC5000f ze-valve yedijithali zihlanganisa izilawuli ezijwayelekile kanye nokuxilongwa. Ukulawula okujwayelekile kufaka phakathi i-A0 ene-P> ibhendi yephutha eliguqukayo, isignali yedrayivu kanye nesignali yokuphumayo kuwukuhlolwa kokuskena okunamandla. Lokhu KUHLOLWA KWENZELWA UKUZE KUSHINTSHE IPHUZU LESIBILI SE-TRANSMITTER BLOCK (SERVO MECHANISM) NGESIVISHA ESILAWULWAYO FUTHI KUHLANGANISE UMSEBENZI WOKUSEBENZA OKUHLOLA UKUSEBENZA OKUZINIKAYO KWEVIVI. Isibonelo, ukuhlolwa kwebhendi yephutha eguquguqukayo i-hysteresis enendawo efile kanye "nokuzungezisa". I-Lag ne-dead zone izimfanelo ezimile. Kodwa-ke, ngenxa yokuthi i-valve iyaqhubeka, amaphutha aguquguqukayo kanye namaphutha "okuzungeza" kwethulwa. I-DYNAMIC SCAN TEST INIKA ISIBONAKALISO ESIHLE SOKUTHI IVAVVU IZOSEBENZA KANJANI ngaphansi kwezimo zenqubo, ezoshintshashintsha kunokuba zime. Ukuhlola okujwayelekile nokuthuthukisiwe kokuxilonga kungenziwa ngokusebenzisa isofthiwe ye-ValveLink kukhompuyutha yomuntu siqu. 3) Ukuxilongwa okuthuthukisiwe Amathuluzi anokuxilongwa okuthuthukile enza ukuhlolwa kweskeni okuguquguqukayo okufakwe ekuxilongweni okujwayelekile kanye nokuhlolwa kweskeni okunamandla kwesine, ukuhlolwa kwezimpawu zamavalvu, kanye nokuhlola okunezinyathelo ezine. UKUHLOLWA kwesici se-valve kukuvumela ukuthi Unqume ukungqubuzana kwe-valve/ACTUATOR, ububanzi besignali yokuhlolwa kwebhentshi, ukuqina kwentwasahlobo, namandla okuvala izihlalo. 4) Inqubo yebhasi ye-Fischer Control Equipment IZINKONZO ZINGAHLAZIYA AMAVAVAVU, izinqubo, NEZITHUTHUSI ZISEBENZISA IZITHUBA ZINAMAKHONO OKUHLOLA INQUBO ngenkathi I-FOUNDATION FieldBUS CONTROL LOOP IHLALA IZENZAKALELAYO KANYE INQUBO IQHUBEKA NOMKHIQIZO. Ngokusebenzisa ukuxilonga inqubo, izinsizakalo zokusebenza zizokwazi ukuhlonza nokukhomba ukuthi yiziphi izingxenye zenqubo ezingase zidale izinkinga zekhwalithi. Nakuba ukuxilonga kwenqubo kudinga ukusebenza, indawo yakho yokugcina inganqunywa kuphela inqubo noma ukungenelela komsebenzisi. Ukuxilongwa kwenqubo kungenziwa kuma-valve amaningi ngesikhathi esisodwa. 2 Ukufakwa nokugcinwa kwezinhlelo 2.1 izinhlelo zokusebenza I-FIELDVUE Smart Valve positers yafakwa ngo-April 1998 ukuze isetshenziswe kumayunithi angu-16 okuqhekeka kanye ne-ethylene glycol. Isetshenziswa kakhulu ukufaka esikhundleni sezikhathi ezithile ezibalulekile zokulawula izindawo. Isibonelo, i-valve yokugeleza kokuphakelayo yesithando somlilo esiqhekekayo kanye ne-valve yokugeleza kokuphakelayo ye-ethylene glycol epoxy reactor control. Sisebenzisa u-opharetha okwenziwa ngesandla ekucushweni nasekuqinisekiseni, umugqa wayo ungafika ku-99%, uziro nobubanzi nokubuyisela kungalawuleka phakathi kwezidingo ezinembile, ukulawula okuzinzile nekhono lokulwa nokuphazamiseka kunamandla ikakhulukazi, ukuhlangabezana ngokugcwele izidingo zokulawulwa kwenqubo. 2.2 ukunakekelwa Indawo ye-FIELDVUE idinga ukulungiswa okuncane futhi empeleni ayinakulungiseka. Ukuzivumelanisa nezimo emkhakheni wayo kunamandla ngokukhethekile. Kodwa ukuze kuqinisekiswe ukusebenza kwesikhathi eside nokuzinzile, abasebenzi bezinsimbi kufanele benze lezi zici ezilandelayo zomsebenzi. I-1) Ukuze uqinisekise indawo yokusebenza enhle futhi uvimbele ukulimala ngengozi, indawo yokusebenza ezungeze indawo yendawo kufanele ihlolwe njalo. Ngesikhathi esifanayo ukuqinisekisa ukuzinza nokuhlanzeka komthombo womoya osebenzayo, ukunciphisa izici zangaphandle ezibangelwa ukushintshashintsha kwensimbi nokwehluleka. 2) Abasebenzi bezinsimbi kufanele bahlole ukuvuza nezimo zokusebenza kwamavalvu nama-positioners masonto onke ukuze baqede izingozi ezifihliwe ngesikhathi. Inyanga ngayinye, u-opharetha osebenza ngesandla usetshenziselwa ukuhlola ijika lesici sesimeli, ahlole iphoyinti elinguziro, ububanzi, umugqa wephutha kanye nephutha lokubuyisela namanye amapharamitha, futhi akulungise futhi akulungise ukuze kuqinisekiswe ikhwalithi yayo yokusebenza. 3) Hlola futhi ugcine i-valve elawulayo njalo ukuze uqinisekise ikhwalithi yokusebenza ye-valve. Ngesikhathi esifanayo, amapharamitha weluphu yokulawula ye-DCS athuthukiswa ukuze kuqinisekiswe ukuhlanganiswa nokuzinza komsebenzi ohlanganyelwe nesitholi. 4) Ngenxa ye-DCS nezinye izizathu, imisebenzi yayo ye-fieldbus kanye nesofthiwe ayizange ithuthukiswe futhi isetshenziswe ngokugcwele, futhi imisebenzi yokulondoloza ehlakaniphile kanye nokuxilongwa ayikwazi ukusetshenziswa ngokugcwele, kodwa isanciphisa inani lokunakekelwa kwansuku zonke. Ngokomphumela wokusetshenziswa kwesitshalo samakhemikhali eminyakeni emibili edlule, isilawuli se-valve esihlakaniphile sinokusebenza okuzinzile nokulungiswa okulula; Ingakwazi ukubona ukuxhumana okuqondile ne-DCS, futhi inomsebenzi wokuzihlola, ukugcinwa okulula; Ingatshalwa kabusha ku-fieldbus, ** isiqondiso sokuthuthukiswa kobuchwepheshe bensimbi yanamuhla. Ukuthuthukiswa okuqhubekayo kanye nokusetshenziswa komsebenzi wayo wesofthiwe yisiqondiso esiqondiwe semizamo yethu yesikhathi esizayo. Ukuhlaziywa kwesimo se-valve esihlakaniphile nokuhlaziya amaphutha okuvamile