Zotsatira za pneumatic valve positioner pneumaticvalavuanatseka zifukwa zazikulu ndi zothetsera
Valve positioner (yomwe imatchedwanso: Pneumatic valve positioner) ndi gawo lofunikira kuti musinthe valavu, yomwe nthawi zambiri imagwiritsidwa ntchito ndi valavu yodziyendetsa yokha ya pneumatic, imayendetsedwa ndi chizindikiro chotuluka cha wolamulira, ndi chizindikiro chake chotuluka kuti chidzilamulire chokhachokha. valavu yowongolera, pomwe valavu yowongolera, tsinde limathanso kubwezeredwa ku choyika valavu ndi chipangizo chamagetsi, malo a Valve amatumizidwa ku pulogalamu yapa siteji molingana ndi chizindikiro chamagetsi.
Valve positioner (yomwe imatchedwanso: Pneumatic valve positioner) ndi gawo lofunikira kuti musinthe valavu, yomwe nthawi zambiri imagwiritsidwa ntchito ndi valavu yodziyendetsa yokha ya pneumatic, imayendetsedwa ndi chizindikiro chotuluka cha wolamulira, ndi chizindikiro chake chotuluka kuti chidzilamulire chokhachokha. valavu yowongolera, pomwe valavu yowongolera, tsinde limathanso kubwezeredwa ku choyika valavu ndi chipangizo chamagetsi, malo a Valve amatumizidwa ku pulogalamu yapa siteji molingana ndi chizindikiro chamagetsi. Kapangidwe ka valavu: choyimira valavu molingana ndi kapangidwe kake ndi mfundo zake zitha kugawidwa m'magawo a pneumatic valavu, valavu yamagetsi yamagetsi yamagetsi yanzeru. Valve positioner imatha kukulitsa mphamvu yotulutsa valavu yosinthira, kuchepetsa kusintha kwa ma siginecha, kufulumizitsa liwiro la tsinde, kuwongolera valavu ya mzere, kuchotsa mphamvu yakugunda kwa tsinde ndikuchotsa mphamvu yamphamvu yosagwirizana, kuwonetsetsa kukhazikika kolondola komanso kolondola. wa valve yosintha. Valve positioner yofananira mtundu wa common actuator pneumatic actuator, magetsi oyendetsa, makonzedwe a sitiroko mwachindunji, kusiyana kwa makonzedwe a ngodya.
Amagwiritsidwa ntchito podzipangira okha, mtundu wamanja wotsegula ndi kutseka mitundu yonse ya ma valve, mafani, ndi zina zotero. Chizindikiro cha valve stem offset chimatengedwa ngati chizindikiro cholozera cholondola, ndipo chizindikiro chotuluka pa bolodi lowongolera chimatengedwa ngati chizindikiro chofananizira. Ziwirizo zikasiyana, chizindikiro chotuluka kwa actuator chimasinthidwa kuti chikhale chowongolera, ndipo kulemberana kumodzi ndi kumodzi pakati pa nthawi zochotsera tsinde la valve ndikutulutsa chizindikiro cha bolodi yowongolera kumakhazikitsidwa.
Chifukwa chake, choyimira valavu chimapanga njira yowongolera mayankho ndi tsinde ngati chizindikiro cholondola choyezera komanso kutulutsa kwa bolodi lowongolera ngati chizindikiro chokhazikitsa. Kusintha kwa kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwekazi ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe kamwemwebumwemwe kapa kapanganinganinganidwenkemwe ukusebenza KOELEjiANIshonikhushoniwu kwoCHILIRA MAILIRA 2010, magawo amtundu wa 2019 kukhala chizindikiro cha valavu poyika pa actuator. Kiyi yoyika ma valve mu siginecha imagawidwa kukhala choyimira valavu cha pneumatic ndi choyika chamagetsi chamagetsi. Chizindikiro cholowetsa choyimira ma vavu cha pneumatic ndi chizindikiro chodziwika bwino cha gasi, mwachitsanzo, 20 ~ 100kPa chizindikiro cha gasi, chizindikiro chake chotuluka ndi chizindikiro cha mpweya wamba. Chida chamagetsi chamagetsi chamagetsi chamagetsi ndi njira yoyendera magetsi kapena siginecha yogwira ntchito, monga 4 ~ 20mA chizindikiro chamagetsi chamagetsi kapena 1 ~ 5V chizindikiritso chamagetsi chogwira ntchito, zida zamagetsi zamagetsi zamkati zimasinthidwa kukhala mphamvu yamaginito, kenako mpweya wotuluka. chizindikiro ku valavu yowongolera kuthamanga kwa rotary. Malinga ndi malo malangizo akhoza kugawidwa mu single valve positioner ndi double valve positioner.
Unilateral valve positioner yokhala ndi piston machine actuator, valve positioner malo amodzi okha amatenga gawo, ma valve awiri oyikapo mbali zonse za silinda yamakina a piston, amagwira ntchito munjira ziwiri. Malinga ndi kutulutsa kwa valavu ndi kupindula kwa siginecha yolowetsayo yolembedwa mu valavu yamphamvu komanso choyimira valavu.
Pamene chizindikiro cholowetsamo choyimira chabwino cha valve chikukwezedwa, chizindikiro chotuluka chimawonjezekanso, kotero kuti phindu lopindula likhale labwino.
Pamene chizindikiro cholowetsa cha choyimira valavu chikwezedwa, chizindikiro chotuluka chimachepetsedwa ndipo phindu lopindula ndilolakwika. Malinga ndi chizindikiro cholowera cha valve ndi chizindikiro chofananira kapena chizindikiro cha data, chitha kugawidwa m'magawo onse a valve ndi mawonekedwe apakompyuta zida zamagetsi zamagetsi.
General valavu positioner mtundu chizindikiro ndi kayeseleledwe wa muyezo kuthamanga kapena kuyenda kwa magetsi, ntchito voteji siginecha, kompyuta mawonekedwe zida zamagetsi valavu positioner mtundu chizindikiro ndi kompyuta mawonekedwe digito chizindikiro. Malinga ndi valavu positioner si ndi CPU akhoza kugawidwa mu wamba magetsi zida valavu positioner ndi wanzeru magetsi vavu poyikira.
General zida zamagetsi valavu positioner alibe CPU, choncho, alibe wanzeru, sangathe kuthetsa yoyenera mawerengedwe wanzeru. Wanzeru valavu positioner ndi CPU, angathe kuthetsa okhudzana wanzeru mawerengedwe, monga umuna ntchito mlingo njira discrete dongosolo chipukuta misozi, kompyuta mawonekedwe magetsi zida valavu positioner angathenso kutenga PID ndi zigawo zina pulogalamu, malizitsani kuwerengera lolingana. Valve ya pneumatic inatseka zifukwa zazikulu ndi zothetsera, choyamba, tiyeni tifufuze valavu yodzipangira yokha ya valve ya pneumatic yomwe imapangitsa kuti valavu ikhale ndi kuchuluka kwa kutayikira, kuti tiwone ngati kutayikira kwa valve kuli kwakukulu kuposa mtengo wokhazikika, kupitirira ndi vuto khalidwe mankhwala. Chachiwiri, kutulutsa kwamagetsi kwamagetsi sikumaphatikizidwa ndi filimu ya valve yogwira ntchito. Kaya valavu yatsekedwa mu dothi.
Valve choyamba, tiyeni tifufuze valavu yodziyendetsa yokha yotsekedwa ndi yomwe imapangitsa kuti chitseko chikhale ndi kuchuluka kwa kutayikira, kuti tiwone ngati kutuluka kwa valve kuli kwakukulu kuposa mtengo wamtengo wapatali, kupitirira ndi vuto la khalidwe la mankhwala. Chachiwiri, kutulutsa kwamagetsi kwamagetsi sikuphatikizidwa ndi filimu ya valve yogwira ntchito. Kaya valavu yatsekedwa mu dothi.
Mphamvu yamasika a valve sikwanira bwino. Kaya tsinde lakakamira.
Vavu pachimake, kuthamanga pachipata valavu pang'ono kuvala filimu mutu vavu chimbale kutayikira nthunzi.
Kuwonongeka kwazida zodziwika bwino.
Vavu yotsegulira mpweya, zero torsion spring axial force ndi yayikulu kwambiri. Tsinde lake ndi lalifupi kwambiri.
Sinthani valavu musanayambe komanso pambuyo pake kusiyana kwapakati kumakhala kwakukulu kwambiri, vuto la kusankha chitsanzo ndi chiyani.
Kaya mphamvu ya actuator ndi yaying'ono kwambiri, yosinthika yayikulu yogwira ntchito (PF kukulitsa mphamvu yotulutsa, valavu yotsekera gasi, kuzungulira kumanzere kwa gawo losinthika (lotayirira), ndiye kuti, kusintha kwa PO ~ PL, koma ndikofunikira. kulabadira kusintha kwa dongosolo lonse sitiroko No.
Tikhoza kupeza chifukwa choyamba ndikugwiritsa ntchito yankho la mawu omwe ali pamwambawa. Ngati muli ndi valavu yamanja ya pneumatic, ndiye kuti nthawi iliyonse yoyimitsidwa, aliyense azigwedezeka atafa, komanso asiyeni ogwira ntchito pa dashboard, kuti ayesenso, ziro ndi kuyika zida kukonzanso; Pali zifukwa zambiri zomwe makonzedwe otsekera akuyenda sali m'malo, tsinde la valavu ndilovala pang'ono, ndipo kupanikizika kwa gasi kumakhala koyenera. Choyamba, ikani mtengo wa choyika valavu, ndiyeno sinthani malo otsekera makonzedwe aulendo; Mavavu ndi mpweya - otseguka kapena mpweya - ma valve otseka. Ngati ndi valavu gasi, akhoza kuona valavu pneumatic ntchito kuthamanga, udindo chida zero kuyeza osiyanasiyana kusintha alibe vuto, kuwonjezera, palibe valavu khadi. Ngati valavu yotseguka ya gasi, valavu ya pneumatic yathyoledwa, valve iyenera kutsekedwa. Ngati sichitsekedwa, zikhoza kukhala kuti mbale yamagetsi yamagetsi ya valve ilibe zinthu zonyansa zomwe zakhala; Ngati valavu yatsekedwa mwangozi, ikufunsidwa kuti ifunse ngati kupanikizika kwa chipangizocho kuli kokwanira, ndiko kuti, ngati kuthamanga kwa locator kungasinthe kupanikizika kwa valve yotsekedwa; Yang'anani kupanikizika kwa ntchito ya valve pneumatic sikokwanira, ndiyeno yang'anani valavu ngati pali chikhalidwe cha khadi, kapena kutayikira, kutsekedwa.
Choyenera kwambiri choyamba kalembedwe kachipangizo koyesa; Vavu ya mpweya: 1, mphamvu ya axial ya masika ndiyosakwanira, imatha kuwonjezeka moyenerera. 2, malo ogwirira ntchito amaloleza, valavu iyenera kuchotsedwa kuti muyese kupanikizika, tengani mwayi uwu kuti muwone momwe kusindikizira kwa valve core high pressure gate valve, komanso ngati pali kuwonongeka kwa valavu ya valve ndi valve yothamanga kwambiri.
3. Ngati vuto la kusatseka likuchitikanso, valavu ikhoza kudulidwa kuti muwone ngati pali zinthu zonyansa pa valve yothamanga kwambiri ya valve mtima. 4. 1. Mphamvu ya axial ya masika ndi yaikulu kwambiri, yomwe ingathe kuchepetsedwa moyenera. 2.
3, ngati vuto likuwonekeranso pafupi osati lakufa, likhoza kudula valavu, fufuzani ngati pali zinthu zonyansa pamtima wa valve high pressure gate valve 4, yang'anani valavu ya pneumatic valve yogwira ntchito si yolakwika 5, fufuzani ngati pali kuwonongeka. ku valavu disc 6, fufuzani ngati zero point ya valve ndi yapamwamba ngati ntchitoyo ikuchitika pambuyo pa zochitika zapafupi osati zakufa, akufunsidwa kuti ayang'ane magawo akuluakulu a valve kuti awone ngati pali kusiyana kulikonse pakati pa valve. makonda magawo akulu ndi momwe ntchito ikugwirira ntchito.
Nthawi yotumiza: Mar-01-2023
