Cov nyhuv ntawm pneumatic valve positioner pneumaticvalvekaw cov laj thawj tseem ceeb thiab kev daws teeb meem
Valve positioner (tseem hu ua: Pneumatic valve positioner) yog ib qho tseem ceeb los kho lub valve, feem ntau yog siv nrog pneumatic self-actuating tswj valve, nws yog actuated los ntawm cov zis teeb liab ntawm tus maub los, thiab nrog nws cov zis teeb liab los tswj tus kheej- actuating tswj valve, thaum tswj valve txoj hauj lwm, lub qia offset kuj pub rov qab mus rau lub valve positioner los ntawm hluav taws xob ntaus ntawv, Valve txoj hauj lwm raug xa mus rau lub on-theem system software raws li hluav taws xob teeb liab.
Valve positioner (tseem hu ua: Pneumatic valve positioner) yog ib qho tseem ceeb los kho lub valve, feem ntau yog siv nrog pneumatic self-actuating tswj valve, nws yog actuated los ntawm cov zis teeb liab ntawm tus maub los, thiab nrog nws cov zis teeb liab los tswj tus kheej- actuating tswj valve, thaum tswj valve txoj hauj lwm, lub qia offset kuj pub rov qab mus rau lub valve positioner los ntawm hluav taws xob ntaus ntawv, Valve txoj hauj lwm raug xa mus rau lub on-theem system software raws li hluav taws xob teeb liab. Valve positioner qauv: valve positioner raws li tus qauv thiab lub hauv paus ntsiab lus yuav muab faib ua pneumatic valve positioner, hluav taws xob-gas valve positioner ntse valve positioner. Valve positioner tuaj yeem nthuav dav qhov hloov pauv lub zog tso tawm lub zog, txo qhov kev hloov kho teeb liab kis tau tus mob, ua kom lub qia nrawm, tuaj yeem txhim kho cov kab hluav taws xob, tshem tawm cov qia kev sib txhuam quab yuam thiab tshem tawm cov kev cuam tshuam ntawm lub zog tsis sib npaug, ua kom muaj qhov tseeb thiab qhov tseeb. ntawm qhov kev hloov kho valve. Valve positioner tau tshaj hom actuator pneumatic actuator, hluav taws xob actuator, direct stroke arrangement, Angle stroke arrangement txawv.
Siv tsis siv neeg, phau ntawv hom qhib thiab kaw txhua yam li qub, kiv cua, thiab lwm yam Valve positioner yog ib qho tseem ceeb ntawm kev tswj lub siab valve. Lub valve qia offset teeb liab raug suav hais tias yog cov tswv yim tawm tswv yim ntsuas qhov tseeb, thiab cov teeb liab tso tawm ntawm pawg tswj hwm raug suav tias yog lub teeb liab teeb tsa rau kev sib piv. Thaum ob qhov sib txawv, cov teeb liab tso tawm mus rau tus actuator raug hloov los ua tus actuator txoj hauj lwm, thiab ib-rau-ib tsab xov xwm ntawm lub valve qia offset lub sij hawm thiab cov zis teeb liab ntawm lub rooj tsavxwm tswj tau teeb tsa.
Yog li ntawd, lub valve positioner tsim ib lub tswv yim tswj system nrog qia offset raws li qhov tseeb ntsuas teeb liab thiab cov zis ntawm lub rooj tsavxwm tswj raws li lub teeb liab teeb liab. Kev tswj qhov sib txawv ntawm kev tswj qhov system yog lub teeb liab tso tawm ntawm lub valve positioner rau tus actuator. Valve positioner tus yuam sij rau hauv lub teeb liab muab faib ua pneumatic valve positioner thiab cov khoom siv hluav taws xob valve positioner. Pneumatic valve positioner input teeb liab yog cov qauv roj teeb liab, piv txwv li, 20 ~ 100kPa roj teeb liab, nws cov teeb liab tso tawm kuj yog cov teeb liab roj. Cov khoom siv hluav taws xob valve positioner input teeb liab yog tus qauv hluav taws xob ntws los yog ua haujlwm voltage teeb liab, xws li 4 ~ 20mA hluav taws xob txaus teeb liab lossis 1 ~ 5V ua haujlwm voltage teeb liab, cov khoom siv hluav taws xob valve positioner sab hauv cov qauv yuav hloov mus rau hauv magnetic teb quab yuam, thiab tom qab ntawd tso tawm roj. teeb liab mus rau lub rotary siab regulating valve. Raws li txoj haujlwm kev taw qhia tuaj yeem muab faib ua ib lub valve positioner thiab ob lub valve positioner.
Unilateral valve positioner nrog piston tshuab actuator, valve positioner tsuas yog ib txoj haujlwm ua lub luag haujlwm, ob lub valve positioner ua rau ob sab ntawm lub tshuab piston actuator lub tog raj kheej, ua lub luag haujlwm hauv ob txoj hauv kev. Raws li lub valve positioner tso zis thiab qhov nce nqi ntawm cov tswv yim teeb liab cim rau hauv qhov zoo nyhuv valve positioner thiab cov tshuaj tiv thaiv valve positioner.
Thaum lub teeb liab tawm tswv yim ntawm qhov zoo-zoo valve positioner yog tsa, cov teeb liab tso zis kuj nce ntxiv, kom tus nqi nce yog qhov zoo.
Thaum lub teeb liab tawm tswv yim ntawm cov tshuaj tiv thaiv valve positioner tau tsa, cov teeb liab tso zis tau txo qis thiab qhov nce nqi yog qhov tsis zoo. Raws li lub valve positioner input teeb liab yog simulation teeb liab los yog cov ntaub ntawv teeb liab, yuav muab faib mus rau hauv dav valve positioner thiab computer interface hluav taws xob khoom valve positioner.
General valve positioner hom teeb liab yog simulation ntawm tus qauv siab lossis hluav taws xob khiav, ua haujlwm voltage teeb liab, lub computer interface hluav taws xob khoom valve positioner hom teeb liab yog lub computer interface digital teeb liab. Raws li lub valve positioner tsis yog nrog CPU tuaj yeem muab faib ua cov khoom siv hluav taws xob dav dav valve positioner thiab ntse hluav taws xob valve positioner.
Cov khoom siv hluav taws xob dav dav valve positioner tsis muaj CPU, yog li ntawd, tsis muaj kev txawj ntse, tsis tuaj yeem daws qhov cuam tshuam rau kev xam cov ntse. Intelligent valve positioner nrog CPU, tuaj yeem daws qhov cuam tshuam ntawm kev txawj ntse suav, xws li phev kev ua haujlwm tus nqi channel discrete system them nyiaj, lub khoos phis tawj cuam tshuam hluav taws xob valve positioner tuaj yeem nqa PID thiab lwm yam kev pab cuam modules, ua kom tiav cov lej suav. Pneumatic valve kaw lub ntsiab yog vim li cas thiab cov kev daws teeb meem ua ntej ntawm tag nrho cov, cia peb ntsuam xyuas tus kheej-ua hauj lwm valve pneumatic valve kaw yog dab tsi ua rau lub valve kom muaj ib tug npaum li cas ntawm to, saib seb lub leakage ntawm lub valve yog siab tshaj tus nqi tus qauv, tshaj yog qhov teeb meem khoom zoo. Thib ob, cov khoom siv hluav taws xob hloov hluav taws xob tsis ua ke nrog lub valve zaj duab xis lub taub hau ua haujlwm siab. Seb lub valve yog daig hauv av.
Valve ua ntej ntawm tag nrho cov, cia peb txheeb xyuas tus kheej-ua haujlwm valve pneumatic valve kaw yog dab tsi ua rau lub qhov rooj kom muaj qee yam ntawm cov dej xau, saib seb qhov dej ntws ntawm lub valve yog siab dua li tus qauv tus nqi, dhau ntawm qhov teeb meem ntawm cov khoom zoo. Qhov thib ob, cov khoom siv hluav taws xob hloov hluav taws xob tsis ua ke nrog lub valve zaj duab xis lub taub hau ua haujlwm siab. Seb lub valve yog daig hauv av.
Lub valve caij nplooj ntoos hlav quab yuam tsis haum zoo. Seb lub qia yog daig.
Valve tub ntxhais, siab siab rooj vag valve ib feem coj zaj duab xis taub hau valve disc to chav.
Common positioning device faults.
Cua qhib valve, xoom torsion caij nplooj ntoos hlav axial quab yuam loj dhau. Lub qia yog luv heev.
Kho lub valve ua ntej thiab tom qab lub siab sib txawv loj heev, qhov teeb meem ntawm kev xaiv qauv yog dab tsi.
Txawm hais tias tus actuator tso zis quab yuam me me dhau lawm, kho qhov loj tsim nyog tso zis ua haujlwm siab (PF kom nthuav dav cov zis quab yuam, rau cov roj kaw lub valve, sab laug tig ntawm qhov kev hloov kho (xoo), uas yog, PO ~ PL hloov, tab sis xav tau them sai sai rau qhov kev hloov pauv ntawm tag nrho cov kab mob stroke No.
Peb tuaj yeem pom qhov laj thawj ua ntej thiab siv qhov kev daws teeb meem los ntawm cov lus hais saum toj no. Yog tias koj muaj phau ntawv pneumatic valve, tom qab ntawd txhua lub sijhawm raug tshem tawm, cia txhua tus neeg yuav tsum viav vias tuag, tab sis kuj tseem cia cov neeg ua haujlwm dashboard, calibrate dua, xoom thiab qhov chaw ntsuas ntsuas dua; Muaj ntau qhov laj thawj vim li cas qhov kev kaw qhov chaw mus ncig tsis nyob hauv qhov chaw, lub valve qia yog ib feem hnav, thiab cov roj compressed siab yog raws li tus qauv. Ua ntej, teeb tsa tus nqi ntawm lub valve positioner, thiab tom qab ntawd kho qhov kaw qhov chaw mus ncig; Valves yog cua - qhib lossis cua - kaw li qub. Yog tias nws yog cov roj valve, tuaj yeem pom pneumatic valve ua haujlwm siab, qhov ntsuas qhov ntsuas xoom ntsuas kev hloov pauv tsis muaj teeb meem, ntxiv rau, tsis muaj daim npav valve. Yog hais tias nws yog cov roj qhib valve, lub pneumatic valve yog tawg, lub valve yuav tsum raug kaw. Yog tias nws tsis raug kaw, nws yuav yog tias lub valve roj Circuit Court phaj tsis muaj cov khoom qias neeg daig; Yog tias lub valve raug kaw, nws raug nquahu kom nug seb lub siab ntawm lub ntsuas vaj huam sib luag puas txaus, uas yog, seb lub siab tso tawm ntawm qhov chaw tuaj yeem kho lub siab ua haujlwm ntawm lub valve kaw; Saib ntawm qhov kev ua haujlwm siab ntawm lub pneumatic valve tsis txaus, thiab tom qab ntawd saib lub valve seb puas muaj daim npav, lossis qhov xau, kuj raug kaw.
Ntau qhov tsim nyog thawj style positioning ntaus ntawv sim; Cua valve: 1, axial quab yuam ntawm lub caij nplooj ntoos hlav tsis txaus, nws tuaj yeem tsim nyog nce. 2, kev ua haujlwm tau tso cai, lub valve yuav tsum raug tshem tawm los ua qhov kev ntsuas siab, siv lub sijhawm no los xyuas qhov kev sib khi ntawm lub valve tub ntxhais siab siab lub rooj vag valve, thiab seb puas muaj kev puas tsuaj rau lub valve tub ntxhais thiab lub rooj vag siab siab.
3. Yog tias cov ntaub ntawv tsis raug kaw rov tshwm sim, lub valve tuaj yeem raug txiav tawm los xyuas seb puas muaj cov khoom qias neeg ntawm lub qhov rooj siab siab ntawm lub plawv valve. 4. 1. Lub axial quab yuam ntawm lub caij nplooj ntoos hlav yog qhov loj heev, uas tuaj yeem txo qhov tsim nyog. 2.
3, yog tias qhov xwm txheej rov tshwm sim tsis tuag, tuaj yeem txiav tawm lub valve, xyuas seb puas muaj cov khoom qias neeg ntawm lub siab lub siab lub rooj vag valve 4, xyuas lub valve pneumatic valve ua haujlwm siab tsis yog lawm 5, xyuas seb puas muaj kev puas tsuaj. mus rau lub valve disc 6, xyuas seb lub xoom point ntawm lub valve yog siab dua yog hais tias qhov kev ua hauj lwm yog nqa tawm tom qab lub phenomenon ntawm kaw tsis tuag, nws yog npaj los mus xyuas lub ntsiab tsis ntawm lub valve saib seb puas muaj ib qho txawv ntawm qhov. customized lub ntsiab parameter thiab cov kev ua haujlwm tiag tiag.
Post lub sij hawm: Mar-01-2023
