Daim ntawv thov ntawm ntse valve positioner nyob rau hauv tsis siv neeg tswj system ntawm petrochemical cog Kev tshuaj xyuas ntawm ntse valve positioner thiab raug soj ntsuam txhaum

Daim ntawv thov ntawm ntse valve positioner nyob rau hauv tsis siv neeg tswj system ntawm petrochemical nroj tsuag Kev tshuaj ntsuam ntawm ntse valve positioner thiab raug txim txhaum nyob rau hauv lub tsis siv neeg tswj system ntawm petrochemical cog, kev xaiv ntawm regulating valve yog ib qho tseem ceeb heev rau qhov precision, nws siv cuam tshuam rau cov khoom zoo, thiab cuam tshuam txog kev nyab xeeb ntawm cov nroj tsuag ntau lawm. Dushanzi VINYL cog txhua lub cuab yeej siv tswj cov li qub nrog rau ntau lub tuam txhab ntawm ntau hom khoom. Tab sis feem coob ntawm cov regulator ntsia yog ib hom valve positioner. FIELDVUE ntse valve positioner ua los ntawm FISHER-ROSEMOUNT tuam txhab tam sim no siv nyob rau hauv Dushanzi Hoobkas. Tom qab ntau tshaj li ib xyoos ntawm kev ua haujlwm, qhov kev ua tau zoo, kev siv, kev ua tau zoo thiab tus nqi sib piv ntawm FIELDVUE ntse valve positioner yog muab piv nrog cov zoo tib yam valve positioner A regulating valve nrog ib tug ntau positioner yog nruab nrog ib tug regulating valve nrog ib tug ntse positioner Qhov yooj yim yuam kev. tsawg dua 20% ntawm kev mus ncig thiab tsawg dua 0.5% ntawm kev mus txawv tebchaws Valve ruaj khov thiab tsis tshua muaj kev ruaj ntseg Kev tuav tswj ntawm qhov chaw Hloov kho ntawm qhov chaw, hauv txee los yog hauv kev sib txuas lus nrog DCS los ntawm lub calibrator Teeb liab qhov chaw 4 ~ 20mA los yog pneumatic teeb liab analog teeb liab lossis digital teeb liab Kev ua tau zoo / tus nqi siab dua qis dua 1 FIELDVUE ntse valve positioner ua hauj lwm hauv paus ntsiab lus thiab cov yam ntxwv 1.1 Cov ntsiab lus ntawm Intelligent Locator FIELDVUE series digital Valve controllers muaj lub hauv paus modular uas tuaj yeem hloov tau yooj yim hauv thaj teb yam tsis tas yuav tshem tawm cov xov hlau lossis cov kav dej. Lub hauv paus module muaj xws li submodules: I / P converters; PWB (printed circuit board) assembly; Pneumatic repeater; Daim ntawv qhia. Lub hauv paus module tuaj yeem rov ua dua los ntawm kev sib hloov submodules. Lub FIELDVUE series digital valve controller tau txais cov lus qhia tawm thiab hluav taws xob los ntawm ib qho kev sib tw ntawm cov xov hlau rau hauv lub thawv davhlau ya nyob twg ib txhij rau PWB sib dhos submodule, qhov uas nws txuas nrog ntau yam tsis xws li node tswj, txwv thiab lwm yam txiaj ntsig hauv ntau ntu fold. -linearization. PWB component submodule ces xa signals mus rau I/P converter submodule. Lub I/P converter hloov cov teeb liab tawm tswv yim rau hauv lub teeb liab barometric. Cov pa hluav taws xob siab yog xa mus rau pneumatic repeater, amplified thiab xa mus rau tus actuator ua lub teeb liab tso zis. Lub teeb liab tso zis kuj tuaj yeem hnov ​​​​los ntawm lub siab rhiab heev nyob rau ntawm PWB tivthaiv submodule. Diagnostic cov ntaub ntawv rau valve actuators. STEM POSITIONS NTAWM LUB VALVE THIAB ACTUTOR yog siv raws li cov khoom siv rau PWB SUBMODULE thiab siv raws li cov lus pom zoo rau DIGITAL VALVE CONTROLLER, uas tuaj yeem tsim los nrog SORE NYIAJ. 1.2 Cov yam ntxwv ntawm cov ntse valve positioner 1.2.1 Real-time cov ntaub ntawv tswj, txhim kho kev ruaj ntseg thiab txo tus nqi 1) Txhim kho kev tswj: ob txoj kev sib txuas lus digital coj cov ntaub ntawv ntawm qhov xwm txheej tam sim no ntawm lub valve rau koj, koj tuaj yeem tso siab rau lub valve. cov ntaub ntawv ua haujlwm kom muaj lub hauv paus rau kev tswj xyuas cov txheej txheem kev txiav txim siab, kom tswj tau raws sijhawm. 2) Txhim kho kev nyab xeeb: Koj tuaj yeem xaiv cov ntaub ntawv los ntawm qhov chaw sib txuas lub thawv, lub rooj tsav xwm davhlau ya nyob twg lossis hauv chav tswj hwm thaj chaw muaj kev nyab xeeb los ntawm kev siv tus neeg siv phau ntawv, PC lossis lub chaw ua haujlwm, txo koj txoj hauv kev los ntsib qhov chaw txaus ntshai, thiab tsis tas yuav mus rau ntawm qhov chaw. 3) Los tiv thaiv ib puag ncig: lub valve leakage detector lossis txwv kev hloov pauv tuaj yeem txuas nrog lub davhlau ya nyob twg ntawm cov ntse digital valve tswj, kom tsis txhob muaj kev sib txuas ntxiv. Lub 'meter' yuav ceeb toom yog tias qhov kev txwv dhau lawm. 4) Kev txuag hluav taws xob: Thaum FIELDVUE series digital valve positioner siv nyob rau hauv kev sib xyaw ua ke, FIELDVUE digital valve controller hloov lub regulator kom txuag tau ntawm cov khoom siv kho vajtse thiab kev teeb tsa. FIELDVUE series digital valve controllers txuag 50% ntawm kev nqis peev hauv kev lag luam, davhlau ya nyob twg thiab I / O cov cai. Nyob rau tib lub sijhawm FIELDVUE meter siv ob txoj kab hluav taws xob hluav taws xob, tsis tas yuav muaj cov khoom siv hluav taws xob sib cais thiab kim. Lawv hloov cov cuab yeej analog uas twb muaj lawm haum rau lub li qub thiab txuag tus nqi siab ntawm kev tso tawm lub zog thiab cov teeb liab kab sib cais. 1.2.2 Cov qauv txhim khu kev qha thiab HART cov ntaub ntawv 1) Cov qauv ruaj khov: Cov qauv kaw tag nrho tiv thaiv kev vibration, kub thiab corrosive ib puag ncig los ntawm kev cuam tshuam rau nws, thiab lub thawv weatherproof field junction box cais cov teb xaim hu los ntawm tus so ntawm lub ntsuas. 2) Ua kom ceev cov kauj ruam npaj pib: Kev sib txuas lus muaj peev xwm ntawm ob txoj kev tswj hwm lub valve tso cai rau koj los txheeb xyuas txhua qhov ntsuas, xyuas nws cov ntsuas ntsuas, tshuaj xyuas thiab sib piv cov ntaub ntawv khaws cia yav dhau los thiab lwm yam ntaub ntawv ntxiv, kom ua tiav lub hom phiaj ntawm pib lub voj kom sai li sai tau. 3) Kev xaiv yooj yim ntawm cov ntaub ntawv: FIELDVUE digital valve locator thiab transmitter siv HART kev sib txuas lus raws tu qauv kom yooj yim xaiv cov ntaub ntawv teb. SAIB XYUAS IB QHOV TSEEM CEEB TSHAJ PLAWS - LUB CONTROL VALVE nws tus kheej - Nrog kev pab ntawm ib tug handheld sib txuas lus nyob rau hauv lub VALVE los yog nyob rau hauv lub Field juncTION BOX, thiab nrog kev pab los ntawm ib tug PERSONAL CONTROL COMPUTER. Kev txais yuav ntawm HART raws tu qauv kuj txhais tau tias FIELDVUE meters tuaj yeem muab tso rau hauv ib qho kev sib koom ua ke lossis siv los ua cov khoom siv tswj tus kheej. Qhov kev hloov pauv no hauv ntau yam ua rau kev tsim qauv ua haujlwm yooj yim dua thiab yooj yim txawm tias tam sim no lossis yav tom ntej. 1.2.3 Kev kuaj tus kheej thiab kev tswj muaj peev xwm 1) Fieldbus kev sib txuas lus Txhua DVC5000f digital valve controllers suav nrog fieldbus kev sib txuas lus muaj peev xwm, suav nrog A0 muaj nuj nqi thaiv thiab cov kev kuaj mob hauv qab no: A) Qhov tseem ceeb valve siv qhov ntsuas qhov ntsuas; B) Kev ntsuas kev noj qab haus huv ntawm cov cuab yeej; C) Predetermined hom valve kev ua tau zoo kauj ruam kev kuaj xyuas. KEY VALVE siv TRACKING PARAMETERS los saib xyuas tag nrho STEM TRAVEL (kev mus ncig ua ke) thiab tus naj npawb ntawm STEM mus ncig (lub voj voog). Lub ntsuas kev noj qab haus huv parameter ceeb toom yog tias muaj teeb meem nrog lub ntsuas lub cim xeeb, processor, lossis lub ntsuas ntsuas. Thaum muaj teeb meem tshwm sim, txiav txim siab seb lub meter yuav ua li cas rau qhov teeb meem. Yog tias, yog tias lub ntsuas ntsuas tsis ua haujlwm, lub ntsuas hluav taws xob puas yuav tsum raug kaw? Koj tseem tuaj yeem xaiv qhov twg tsis ua haujlwm yuav ua rau lub 'meter' kaw (txawm tias qhov teeb meem loj txaus ua rau lub ntsuas ntsuas kaw). Cov lus qhia parameter no tau tshaj tawm hauv daim ntawv ceeb toom. Kev soj ntsuam lub tswb tuaj yeem muab qhov taw qhia tam sim ntawm qhov ntsuas qhov yuam kev, valve, lossis txheej txheem. 2) Tus qauv tswj thiab kuaj xyuas Txhua DVC5000f digital valve controllers suav nrog cov qauv tswj thiab kuaj xyuas. Standard tswj muaj xws li A0 nrog P> dynamic yuam kev band, tsav teeb liab thiab tso zis teeb liab yog dynamic scan xeem. Cov kev ntsuam xyuas no tau ua los hloov qhov teeb tsa ntawm lub tshuab xa hluav taws xob (SERVO MECHANISM) ntawm kev tswj xyuas nrawm thiab teeb tsa lub valve ua haujlwm los txiav txim siab qhov kev ua haujlwm ntawm lub valve. Piv txwv li, qhov dynamic yuam kev band xeem yog hysteresis nrog tuag cheeb tsam ntxiv rau "kev sib hloov". Lag thiab thaj chaw tuag yog qhov zoo li qub. Txawm li cas los xij, vim tias lub valve yog nyob rau hauv kev txav, dynamic yuam kev thiab "rotation" yuam kev tau qhia. DYNAMIC SCAN TEST muab qhov qhia tau zoo ntawm qhov VALVE yuav ua haujlwm li cas nyob rau hauv cov txheej txheem txheej txheem, uas yuav ua kom muaj zog tsis zoo li qub. Kev ntsuam xyuas tus qauv thiab qib siab tuaj yeem ua tau los ntawm kev khiav ValveLink software ntawm tus kheej lub computer. 3) Advanced diagnosis Instruments nrog advanced diagnostics ua lub dynamic scan xeem nrog rau cov qauv kuaj thiab ib tug thib plaub dynamic scan xeem, lub valve yam ntxwv kuaj, thiab plaub kauj ruam diagnostic xeem. Valve tus yam ntxwv TESTING tso cai rau koj los txiav txim siab valve / ACTUATOR kev sib txhuam, lub rooj ntev zaum sim siab teeb liab ntau yam, lub caij nplooj ntoos hlav txhav, thiab lub rooj kaw lub zog. 4) Cov txheej txheem tsheb npav Fischer Tswj Cov Khoom Siv Ua Haujlwm Kev Pabcuam tuaj yeem ntsuas lub valve, txheej txheem, thiab kev xa tawm siv cov khoom siv nrog cov txheej txheem DIAGNOSTIC CAPABILITIES thaum lub FOUNDATION FieldBUS CONTROL LOOP REMAINS AUTOMATIC PROCESS PRODUCTION . Siv cov txheej txheem kuaj mob, cov kev pabcuam ua haujlwm yuav tuaj yeem txheeb xyuas thiab txheeb xyuas cov khoom ntawm cov txheej txheem uas yuav ua rau muaj teeb meem zoo. Txawm hais tias cov txheej txheem kuaj mob yuav tsum tau nce thiab khiav, lawv qhov kawg taw tes tsuas yog txiav txim tau los ntawm cov txheej txheem lossis kev cuam tshuam tus neeg teb xov tooj. Cov txheej txheem kuaj mob tuaj yeem ua tiav ntawm ntau lub valve ib txhij. 2 Daim ntawv thov thiab kev saib xyuas 2.1 daim ntawv thov FIELDVUE Smart Valve positers tau teeb tsa thaum lub Plaub Hlis 1998 rau kev siv 16 qhov tawg thiab ethylene glycol units. Feem ntau yog siv los hloov qee qhov tseem ceeb tswj cov ntsiab lus hauv Circuit Court zaus. Piv txwv li, feed flow valve ntawm cracking furnace thiab feed flow valve ntawm ethylene glycol epoxy reactor tswj. Peb siv tus neeg teb xov tooj rau nws qhov kev teeb tsa thiab kev txheeb xyuas, nws cov linearity tuaj yeem nce mus txog 99%, xoom thiab ntau thiab rov qab tuaj yeem tswj tau nyob rau hauv ntau qhov kev xav tau, ruaj khov heev thiab muaj peev xwm tiv thaiv kev cuam tshuam tshwj xeeb yog muaj zog, ua tau raws li qhov xav tau ntau yam. cov kev cai ntawm kev tswj cov txheej txheem. 2.2 kev saib xyuas Lub FIELDVUE qhov chaw yuav tsum tau saib xyuas tsawg kawg nkaus thiab tsis muaj kev tu ncua. Nws thaj chaw adaptability yog tshwj xeeb muaj zog. Tab sis txhawm rau ua kom muaj kev ua haujlwm ntev thiab ruaj khov, cov neeg ua haujlwm ntsuas yuav tsum ua cov haujlwm hauv qab no. 1) Txhawm rau kom muaj chaw ua haujlwm zoo thiab tiv thaiv kev puas tsuaj, qhov chaw ua haujlwm nyob ib puag ncig tus neeg nrhiav chaw yuav tsum tau kuaj xyuas tsis tu ncua. Nyob rau tib lub sijhawm los xyuas kom meej qhov ruaj khov thiab huv ntawm cov huab cua ua haujlwm, txo qhov cuam tshuam sab nraud los ntawm kev ntsuas qhov hloov pauv thiab tsis ua haujlwm. 2) Cov neeg ua haujlwm ntawm cov cuab yeej yuav tsum tau kuaj xyuas cov dej xau thiab kev ua haujlwm ntawm cov li qub thiab cov chaw ua haujlwm txhua lub lim tiam kom tshem tawm cov kev phom sij zais hauv lub sijhawm. Txhua lub hlis, tus neeg siv phau ntawv siv los xyuas cov yam ntxwv nkhaus ntawm lub positioner, xyuas qhov zero point, ntau yam, linearity thiab rov qab yuam kev thiab lwm yam tsis, thiab optimize thiab kho nws kom nws ua hauj lwm zoo. 3) Tshawb xyuas thiab tswj lub valve tsis tu ncua kom ntseeg tau tias lub valve ua haujlwm zoo. Nyob rau tib lub sijhawm, qhov tsis sib xws ntawm DCS tswj lub voj yog ua kom zoo los xyuas kom muaj kev sib koom tes thiab kev ruaj ntseg ntawm kev sib koom ua haujlwm nrog tus neeg nrhiav chaw. 4) Vim yog DCS thiab lwm yam laj thawj, nws cov fieldbus thiab software ua haujlwm tsis tau tsim thiab siv tag nrho, thiab kev tswj xyuas ntse thiab kev kuaj mob tsis tuaj yeem siv tag nrho, tab sis nws tseem txo cov nqi tu txhua hnub. Raws li kev siv cov tshuaj cog qoob loo hauv ob xyoos dhau los, lub tshuab ntse valve tswj tau ruaj khov thiab kev hloov kho yooj yim; Tau paub txog kev sib txuas lus ncaj qha nrog DCS, thiab muaj kev ua haujlwm ntawm kev kuaj tus kheej, kev saib xyuas yooj yim; Yuav tau hloov mus rau fieldbus, ** cov kev taw qhia ntawm niaj hnub ntsuas tshuab kev loj hlob. Kev txhim kho ntxiv thiab kev siv nws cov haujlwm software yog lub hom phiaj ntawm peb txoj kev siv zog yav tom ntej. Kev tsom xam ntawm qhov ntse valve positioner thiab kev txheeb xyuas qhov yuam kev