Tšebeliso ea "valve positioner" e bohlale tsamaisong ea othomathiki ea semela sa petrochemical Analysis ea "valve positioner" e bohlale le tlhahlobo e tloaelehileng ea liphoso.

Ts'ebeliso ea "valve positioner" e bohlale tsamaisong ea othomathike ea semela sa petrochemical Analysis ea "valve positioner" e bohlale le tlhahlobo e tloaelehileng ea phoso Tsamaisong ea othomathike ea semela sa petrochemical, khetho ea valve e laolang e bohlokoa haholo ho nepahala, ts'ebeliso ea eona e ama boleng ba lihlahisoa. mme e amana le polokeho ya tlhahiso ya semela. Dushanzi VINYL semela se seng le se seng se sebelisa li-valve tse laolang ho kenyelletsa le baetsi ba mefuta e fapaneng ea lihlahisoa. Empa boholo ba li-regulator tse kentsoeng ke mofuta o tloaelehileng oa li-valve positioner. FIELDVUE intelligent valve positioner e hlahisoang ke FISHER-ROSEMOUNT Company e se e sebelisoa fekthering ea Dushanzi. Ka mor'a nako e fetang selemo ea ts'ebetso, ts'ebetso, ts'ebeliso, ts'ebetso le tekanyo ea theko ea FIELDVUE e bohlale ea li-valve positioner li bapisoa le tse tloaelehileng tsa valve positioner Valfo e laolang e nang le boemo bo tloaelehileng e na le valve e laolang e nang le sebaka se bohlale Phoso ea motheo. e ka tlase ho 20% ea leeto le ka tlase ho 0.5% ea leeto Botsitso ba Valve bo tsitsitse ebile bo tsitsitse haholo Tokiso ea Manual setšeng Phetoho setšeng, khabineteng kapa puisanong le DCS ka calibrator Signal source 4 ~ 20mA kapa letšoao la pneumatic. lets'oao la analoge kapa lets'oao la dijithale Ts'ebetso/theko e phahameng ho feta tlase 1 FIELDVUE intelligent valve positioner molao-motheo oa ho sebetsa le litšobotsi 1.1 Melao-motheo ea Intelligent Locator FIELDVUE series Balaoli ba li-valve tsa digital ba na le modular base e ka nkeloang sebaka habonolo tšimong ntle le ho tlosa lithapo tsa masimo kapa likotopo. Motheo oa mojule o kenyelletsa li-submodule: li-converter tsa I / P; Kopano ea PWB (boto ea potoloho e hatisitsoeng); Pheta-phefumoloho; Letlapa la litaelo. Motheo oa module o ka kopanngoa hape ka ho fapanyetsana li-submodules. The FIELDVUE series digital valve controller e fumana lipontšo tsa ho kenya le matla a motlakase ka lithapo tse sothehileng ka lebokoseng la ho qetela ka nako e le 'ngoe ho submodule ea kopano ea PWB, moo e khomaretsoeng le li-parameter tse ngata tse kang li-node coordinates, meeli le litekanyetso tse ling ka har'a lesaka la likarolo tse ngata. - ho etsa mola. Submodule ya karolo ya PWB ebe e romela matshwao ho submodule ya I/P converter. Mofetoleli oa I / P o fetola lets'oao le kenang hore e be lets'oao la barometric. Letšoao la khatello ea moea le romelloa ho phetisetso ea moea, ea holisoa le ho romeloa ho actuator e le lets'oao la tlhahiso. Letšoao la tlhahiso le ka boela la utluoa ke ntho e utloang khatello e teng ho submodule ea karolo ea PWB. Lintlha tsa tlhahlobo ea li-valve actuators. MAEMO A STEM A VALVE LE ACTUATOR A SEBELISOA JOALOKA LITŠOANTŠISO TSA HO KENYA HO PWB SUBMODULE 'ME LI SEBELISA JOALOKA MATŠOAO A TLHOKOMELISO HO MOLAOLI OA DIGITAL VALVE, A KA HLOMANG LE MOSEBETSI OA GAUGE E BONTŠANG MOYA LE HO BONAHALA. 1.2 Litšobotsi tse bohlale tsa boemo ba valve bo bohlale 1.2.1 Taolo ea tlhahisoleseling ea nako ea nnete, ts'ireletso e ntlafalitsoeng le litšenyehelo tse fokotsehileng 1) Ntlafatsa taolo: puisano ea dijithale ea litsela tse peli e tlisa tlhahisoleseding ea boemo ba hona joale ba valve ho uena, u ka itšetleha ka valve. tlhahisoleseding ea mosebetsi ho ba le motheo oa qeto ea tsamaiso ea tsamaiso, ho etsa bonnete ba ho laola ka nako. 2) Ntlafatsa polokeho: U ka khetha tlhahisoleseling ho tsoa lebokoseng la mateano la sebaka, boto ea terminal kapa ka phaposing ea taolo sebakeng se sireletsehileng joalo ka ho sebelisa opareitara, PC kapa sistimi ea ts'ebetso, fokotsa monyetla oa ho tobana le tikoloho e kotsi, 'me ha ua tlameha ho etsa joalo. eya setsheng. 3) Ho sireletsa tikoloho: sesebelisoa sa ho lutla ha valve kapa sesebelisoa sa moeli se ka hokeloa ho terminal e thusang ea molaoli ea bohlale oa li-valve tsa dijithale, e le ho qoba wiring e eketsehileng ea tšimo. Metara e tla lla haeba moeli o fetisitsoe. 4) Ho boloka thepa ea thepa: Ha FIELDVUE series digital valve positioner e sebelisoa mekhoeng e kopantsoeng, FIELDVUE digital valve controller e nkela sebaka sa taolo ho boloka litšenyehelo tsa hardware le tsa ho kenya. FIELDVUE letoto la balaoli ba li-valve tsa dijithale ba boloka 50% mabapi le matsete a wiring, terminal le litlhoko tsa I/O. Ka nako e ts'oanang FIELDVUE meter e sebelisa lisebelisoa tse peli tsa tsamaiso ea motlakase, ha e hloke terata ea motlakase e arohaneng le e theko e boima. Ba nkela sebaka sa lisebelisoa tsa analog tse teng tse kentsoeng li-valve 'me ba boloka litšenyehelo tse phahameng tsa ho beha matla le melaetsa ea matšoao ka thoko. 1.2.2 Sebopeho se ka tšeptjoang le tlhahisoleseding ea HART 1) Sebopeho se tšoarellang: Sebopeho se tiisitsoeng ka ho feletseng se thibela ho sisinyeha, mocheso le tikoloho e senyang ho e ama, 'me lebokose la marang-rang le thibelang boemo ba leholimo le arola likhokahano tsa terata ea tšimo ho tloha ho lisebelisoa tse ling kaofela. 2) Ho potlakisa mehato ea ho itokisetsa ho qala: Bokhoni ba puisano ba litsela tse peli tsa molaoli oa li-valve tsa dijithale bo u lumella ho tsebahatsa sesebelisoa se seng le se seng u le hole, ho lekola boemo ba sona, ho hlahloba le ho bapisa lirekoto tsa tlhokomelo tse bolokiloeng pele le tlhaiso-leseling e meng, ho fihlela sepheo sa ho qala sekgoqetsane kapele kamoo ho ka kgonehang. 3) Khetho e bonolo ea tlhahisoleseling: FIELDVUE digital valve locator le transmitter e sebelisa protocol ea puisano ea HART ho khetha tlhahisoleseding ea tšimo habonolo. Sheba KA 'NETE MOTHEO OA TS'EBETSO EA TAOLO - VALVE KA ONA - KA THUSO EA SEBUI SA LETSOHO KA VALVE KAPA LEBOKOONG LA FIELD JUNCTION, LE KA THUSO EA K'homphieutha KAPA KHONOLO EA OPERATOR KA ROOM EA DCS. Ho amoheloa ha protocol ea HART ho boetse ho bolela hore limithara tsa FIELDVUE li ka kenngoa tsamaisong e kopanetsoeng kapa ea sebelisoa e le sesebelisoa sa ho laola se ikemetseng. Ho ikamahanya le maemo hona likarolong tse ngata ho etsa hore moralo oa sistimi o sebetse hantle le ho ba bonolo ho sa tsotelehe hona joale kapa kamoso. 1.2.3 Bokhoni ba ho itlhahloba le ho laola 1) Puisano ea Fieldbus Bohle ba laolang li-valve tsa DVC5000f tsa digital ba kenyelletsa bokhoni ba puisano ea fieldbus, ho kenyelletsa le A0 block block le tlhahlobo e latelang: A) Li-valve tsa bohlokoa li sebelisa li-parameter tsa ho latela; B) Lisebelisoa tsa boemo ba bophelo bo botle ba lisebelisoa; C) Tlhahlobo e reriloeng esale pele ea tšebetso ea li-valve mohato oa ho lokisa. SEHLOOHO SEHLOOHO SEBELISA LIPARAMETA TSA HO LATELA HO SHEBELLA LEETO KAOFELA LA STEM (pokello ea maeto) le palo ea linako tsa maeto a STEM (cycle). Paramethara ea bophelo bo botle ea mithara e lla haeba ho na le mathata leha e le afe ka memori ea meter, processor, kapa detector. Hang ha bothata bo hlaha, fumana hore na metara e tla itšoara joang bothateng boo. Haeba, haeba mochine oa khatello o hlōleha, meter e lokela ho tima? U ka boela ua KHETHA KE HO hloleha ha karolo hofe ho tla etsa hore mitha e koalehe (hore na bothata bo tebile hoo bo ka etsang hore mitha e koalehe). Litaelo tsena tsa paramethara li tlalehiloe ka mokhoa oa lialamo. Li-alarms tsa ho beha leihlo li ka fana ka sesupo sa hang-hang sa sesebelisoa se fosahetseng, valve kapa ts'ebetso. 2) Taolo e tloaelehileng le tlhahlobo Bohle ba laolang li-valve tsa dijithale tsa DVC5000f ba kenyelletsa taolo e tloaelehileng le tlhahlobo. Taolo e tloaelehileng e kenyelletsa A0 e nang le P> dynamic error band, lets'oao la koloi le lets'oao la tlhahiso ke tlhahlobo e matla ea scan. LITEKO TSENA LI ETSOA HO FETOHA SEBAKA SA TŠEBELETSO EA TRANSMITTER BLOCK (SERVO MECHANISM) KA LEBELO LE LAOLENG LE HO RALA MOSEBETSI OA VALVE HO HLOMELA TSEBETSI EA MATLA A SEBELO. Mohlala, tlhahlobo e matla ea sehlopha sa liphoso ke hysteresis e nang le "dead zone" hammoho le "rotation". Lag le dead zone ke litšoaneleho tse tsitsitseng. Leha ho le joalo, hobane valve e ntse e tsamaea, liphoso tse matla le liphoso tsa "rotation" lia hlahisoa. DYNAMIC SCAN TEST E FANA POTSO E MOLEMO EA KAMOO VALVE E TLA SEBETSA tlas'a maemo a ts'ebetso, e tla ba matla ho e-na le ho ema. Liteko tse tloaelehileng le tse tsoetseng pele tsa tlhahlobo li ka etsoa ka ho sebelisa software ea ValveLink khomphuteng ea hau. 3) Tlhahlobo e tsoetseng pele Lisebelisoa tse nang le tlhahlobo e tsoetseng pele li etsa tlhahlobo e matla e kenyellelitsoeng tlhahlobong e tloaelehileng hammoho le tlhahlobo ea bone e matla ea scan, tlhahlobo ea litšobotsi tsa valve, le liteko tsa tlhahlobo ea mehato e mene. TEKO ea sebopeho sa li-valve e u fa monyetla oa HO HLOMELA likhohlano tsa valve / ACTUATOR, mofuta oa matšoao a khatello ea liteko tsa benche, ho satalla ha selemo, le matla a ho koala litulo. 4) Ts'ebetso ea libese ea Fischer Control Equipment LITŠEBELETSO LI KA LEKOLA LI-VALVE, lits'ebetso, le LITŠEBELETSO TSA LITŠEBELETSO TSE SEBELISANG LITŠEBELETSO TSE NA LE MEKHOA EA TŠEBELETSO EA HO HLAHALA ha MOTHEO OA TŠEBELETSO EA LITŠEBELETSO TSA TEBELLO E TSAMAEA E TSOHLE LE MOSEBETSI O TSOELA PELE HO TSOELA PELE. Ho sebelisa tlhahlobo ea ts'ebetso, lits'ebeletso tsa ts'ebetso li tla khona ho tseba le ho tseba hore na ke likarolo life tsa ts'ebetso tse ka bakang mathata a boleng. Leha tlhahlobo ea ts'ebetso e hloka ho tsoela pele, ntlha ea bona ea ho qetela e ka khethoa feela ka ts'ebetso kapa ts'ebetso ea opareitara. Tlhahlobo ea ts'ebetso e ka etsoa ka li-valve tse ngata ka nako e le 'ngoe. 2 Ts'ebeliso le tlhokomelo 2.1 lits'ebetso tsa FIELDVUE Smart Valve positers li ile tsa kenngoa ka April 1998 bakeng sa ho sebelisoa likarolong tse 16 tsa cracking le ethylene glycol. Haholo-holo e sebelisoa ho nkela maemo a mang a bohlokoa a taolo maemong a potoloho. Mohlala, valve ea phallo ea phepelo ea sebōpi se phatlohang le valve ea phallo ea phepelo ea taolo ea ethylene glycol epoxy reactor. Re sebelisa opareitara ea tataiso bakeng sa tlhophiso le netefatso ea eona, moeli oa eona o ka fihla ho 99%, zero le marang-rang le ho khutla ho ka laoloa ka har'a mefuta e fapaneng ea litlhoko tse nepahetseng, taolo e tsitsitseng haholo le bokhoni ba ho thibela ho kena-kenana le matla ka ho khetheha, bo kopana ka botlalo. ditlhoko tsa taolo ya tshebetso. 2.2 Paballo Sebaka sa FIELDVUE se hloka tlhokomelo e fokolang mme ha e le hantle ha se na tlhokomelo. Ho ikamahanya le maemo ho matla haholo. Empa e le ho netefatsa ts'ebetso ea nako e telele le e tsitsitseng, basebetsi ba lisebelisoa ba lokela ho etsa likarolo tse latelang tsa mosebetsi. 1) E le ho etsa bonnete ba hore ho na le sebaka se setle sa ho sebetsa le ho thibela tšenyo e sa lebelloang, sebaka sa ho sebetsa se potolohileng sebaka se lokela ho hlahlojoa kamehla. Ka nako e ts'oanang ho netefatsa botsitso le bohloeki ba mohloli oa moea o sebetsang, fokotsa lintlha tse ka ntle tse bakoang ke ho fetoha ha lisebelisoa le ho hlōleha. 2) Basebeletsi ba lisebelisoa ba lokela ho hlahloba ho lutla le maemo a ho sebetsa a li-valve le li-positioners beke le beke ho felisa likotsi tse patiloeng ka nako. Khoeli e 'ngoe le e 'ngoe, opereishene ea tataiso e sebelisoa ho lekola sekhahla sa sebopeho, ho lekola ntlha ea zero, sebaka, linearity le phoso ea ho khutla le liparamente tse ling, le ho e ntlafatsa le ho e lokisa ho netefatsa boleng ba eona ba ho sebetsa. 3) Sheba le ho boloka valve e laolang kamehla ho netefatsa boleng ba mosebetsi oa valve. Ka nako e ts'oanang, litekanyo tsa "loop ea taolo ea DCS" li ntlafalitsoe ho netefatsa tšebelisano 'moho le botsitso ba mosebetsi o kopanetsoeng le motho ea lulang sebakeng seo. 4) Ka lebaka la DCS le mabaka a mang, mesebetsi ea eona ea fieldbus le software ha e so ntlafatsoe le ho sebelisoa ka botlalo, 'me mesebetsi e bohlale ea tlhokomelo le tlhahlobo e ke ke ea sebelisoa ka botlalo, empa e ntse e fokotsa palo ea tlhokomelo ea letsatsi le letsatsi. Ho ea ka phello ea tšebeliso ea semela sa lik'hemik'hale lilemong tse peli tse fetileng, molaoli oa li-valve ea bohlale o na le ts'ebetso e tsitsitseng le phetoho e bonolo; E ka lemoha puisano e tobileng le DCS, 'me e na le mosebetsi oa ho itlhahloba, tlhokomelo e bonolo; E ka fetisetsoa ho fieldbus, ** tataiso ea ntlafatso ea theknoloji ea lisebelisoa tsa kajeno. Nts'etsopele e tsoelang pele le ts'ebeliso ea ts'ebetso ea software ea eona ke tataiso ea sepheo sa boiteko ba rona ba kamoso. Tlhahlobo ea boemo ba valve bo bohlale le tlhahlobo e tloaelehileng ea liphoso