Kudzivirira kwekudzivirira kunogadzirisa simba rinopinda panzvimbo, kureva, voltage uye ikozvino muganho, kuitira kuti mutsara wemunda urege kuunza mazhenje pasi pehurumende ipi zvayo, kuitira kuti irege kukonzera kuputika.Iyi nzira yekudzivirira kuputika inonzi intrinsic safety.Zvipingamupinyi zvedu zvakajairika zvekuchengetedza zvinosanganisira zener kuchengetedza zvipingamupinyi, transistor kuchengetedza zvipingamupinyi, uye transformer yakasarudzika chengetedzo zvipingamupinyi.Izvi zvipingamupinyi zvekuchengetedza zvine zvazvakanakira uye vese vabatsiri mukugadzirwa kwemaindasitiri.Vanotevera vapepeti vanobva kuSuixianji.com vachasuma musimboti wekushanda uye mashandiro echivharidzo chekuchengetedza, pamwe nemusiyano kubva pachivhariso chekuzviparadzanisa nevamwe.
Chengetedzo chipingamupinyi ishoko rakajairwa, rakakamurwa kuita zener chengetedzo barriers uye yekuzviparadzanisa kuchengetedza barriers, yakasarudzika chengetedzo barriers inonzi inonzi yekuzviparadzanisa barrier.
Mashandiro anoita chipingamupinyi chekuchengetedza
1. Kushanda musimboti wechiratidzo isolator:
Chekutanga, chiratidzo cheiyo transmitter kana chiridzwa chinogadziridzwa uye chinoshandurwa nesemiconductor mudziyo, yobva yasarudzika uye ichishandurwa nechiedza-inonzwa kana magineti-inonzwa mudziyo, yobva yadzorwa uye kudzoserwa kuchiratidzo chepakutanga isati yaparadzaniswa, uye simba. kugovera kwechiratidzo chega kwakaparadzaniswa panguva imwe chete..Ita shuwa kuti chiratidzo chakashandurwa, magetsi uye pasi zvakazvimiririra zvachose.
2. Kushanda musimboti weZener kuchengetedza barrier:
Basa guru rekudzivirira kuchengetedza kudzikamisa kugona kwengozi kwenzvimbo yakachengeteka kupinda munzvimbo ine njodzi, uye kudzikamisa voltage uye ikozvino inotumirwa kunzvimbo ine ngozi.
Zener Z inoshandiswa kudzikamisa voltage.Kana iyo loop voltage iri padyo neiyo yekuchengetedza muganho kukosha, iyo Zener inobatidzwa, kuitira kuti iyo voltage mhiri kweZener inogara ichichengetwa pazasi pemuganho wekuchengetedza.Resistor R inoshandiswa kudzikamisa ikozvino.Kana iyo voltage ishoma, kusarudzwa kwakakodzera kweiyo resistor kukosha kunogona kudzikamisa loop ikozvino pazasi peyakachengeteka ikozvino muganho kukosha.
Basa refuse F nderokudzivirira kutadza kwemagetsi edunhu nekuda kwe zener chubhu iri kupeperetswa nemhepo hombe inoyerera kwenguva yakareba.Kana iyo voltage ichipfuura yakachengeteka voltage muganho kukosha inoiswa kudunhu, iyo Zener chubhu inovhurwa.Kana pasina fuse, ikozvino inoyerera nemuZener chubhu inokwira zvisingaite, uye pakupedzisira iyo Zener chubhu inozofuridzirwa, zvekuti chiokomuhomwe chirasikirwa nemagetsi ayo.Kuona kuti chiokomuhomwe chinomisikidza chakachengeteka, fuse inovhuvhuta zvakapetwa kagumi kupfuura iyo Zener inogona kuvhuvhuta.
3. Nheyo yekushanda yeiyo yakasarudzika chiratidzo chekuzviparadzanisa kuchengetedza barriers:
Kuenzaniswa ne zener kuchengetedza barriers, iyo yakasarudzika yekudzivirira barriers ine basa re galvanic yekuzviparadzanisa nekuwedzera kune mabasa emagetsi uye ikozvino kudzikamisa.Iyo yekuzviparadzanisa barriers inowanzo umbwa nezvikamu zvitatu: iyo loop simba inodzikamisa unit, iyo galvanic isolation unit uye chiratidzo chekugadzirisa unit.Iyo loop simba inodzikamisa unit ndiyo yakakosha chikamu chekuchengetedza barriers.Pamusoro pezvo, kune anobatsira magetsi ekupa maseketi ekutyaira zviridzwa zvemumunda uye maseketi ekuona ekutora chiratidzo chezviridzwa.Chiratidzo chekugadzirisa chikwata chinoita chiratidzo chekugadzirisa maererano nezvinodiwa zvehutano hwekuchengetedza.
Basa rezvipingamupinyi zvekuchengetedza
Chengetedzo chipingamupinyi chinhu chakakosha chekuchengetedza midziyo mumaindasitiri mazhinji.Inonyanya kubata kana kushandisa zvimwe zvinopisa, zvakadai semafuta asina kuchena uye mamwe mafuta asina kuchena anobva, doro, gasi rechisikigo, hupfu, nezvimwewo. Kudonha kana kushandiswa kusina kunaka kwechimwe chezvinhu izvi kunoguma nemamiriro ezvinhu anoputika.Nekuchengetedza mafekitori uye vanhu, zvinodikanwa kuve nechokwadi kuti nzvimbo yekushanda haizokonzere kuputika.Mukuita kwezvidziviriro izvi, chivharo chekuchengetedza chinoita basa rakakosha.basa rinokosha,
Iyo yekuchengetedza chipingamupinyi chiri pakati peimba yekudzora nemidziyo yakachengeteka yemukati munzvimbo ine njodzi.Inonyanya kuita basa rekudzivirira.Chero midziyo yemagetsi mukugadzira inogona kukonzera kuputika, kuputika kwakasiyana-siyana, magetsi akamira, tembiricha yakakwira, nezvimwe. Zvese hazvidzivisike mukugadzirwa kwemaindasitiri, saka chipingamupinyi chekuchengetedza chinopa chiyero chekudzivirira chekugadzirwa kwemaindasitiri.
Panofanira kunge paine yakavimbika pasi pasi system panguva yekuisa, uye zviridzwa zvemumunda kubva munzvimbo ine ngozi zvinofanirwa kuve zvakazvimiririra.Zvikasadaro, chiratidzo hachigone kufambiswa nenzira kwayo mushure mekubatana pasi, izvo zvinokanganisa kugadzikana kwehurongwa.
Musiyano pakati pekuchengetedza chipingamupinyi uye yekuzviparadzanisa barrier
1. Signal isolator basa
Chengetedza iyo yakaderera control loop.
Deretsa simba remheremhere padunhu rekuyedza.
Dzvinyirira kupindira kwepasi peruzhinji, frequency converter, solenoid valve uye isingazivikanwe pulse kumidziyo;panguva imwecheteyo, ine mabasa ekudzikamisa magetsi uye yakayerwa ikozvino kune yakaderera michina, inosanganisira transmitter, chiridzwa, frequency converter, solenoid valve, PLC/DCS yekupinda uye inobuda uye yekukurukurirana interface kuchengetedza kwakatendeka.
2. Isolated chengetedzo chipingamupinyi
Isolation barrier: Isolated chengetedzo barriers, ndiko kuti, kuwedzera basa rekuzviparadzanisa nechikonzero chekuchengetedza chipingamupinyi, icho chinogona kudzivirira kupindira kwepasi loop ikozvino kune chiratidzo, uye panguva imwechete kudzivirira sisitimu kubva mukufurirwa kwesimba rine njodzi kubva kune chiitiko.Semuenzaniso, kana yakakura ikozvino inopinda mumutsara wemunda, ichapwanya chipingamupinyi chekuzviparadzanisa pasina kukanganisa IO.Dzimwe nguva inogona zvakare kunzwisiswa seyakasarudzika isina chekuchengetedza chipingamupinyi basa, ndiko kuti, ine chete basa rekuzviparadzanisa nevamwe kudzivirira kupindira kwechiratidzo uye kudzivirira iyo system IO, asi haipe dunhu rakachengeteka.Zvekushandisa zvisina kuputika.
Iyo inotora chimiro chedunhu chinoparadzanisa nemagetsi kupinza, kubuda uye magetsi kubva kune mumwe nemumwe, uye inosangana nezvinodiwa zvemukati chengetedzo kudzikamisa simba.Kuenzaniswa neZener kuchengetedza barriers, kunyangwe mutengo wacho uchidhura, mabhenefiti ekuita kwayo anounza mabhenefiti makuru kumashandisirwo emushandisi:
Nekuda kwekushandiswa kwematatu-nzira yekuzviparadzanisa, hapana kudikanwa kwemitsara yekumisa system, izvo zvinounza kurerukirwa kukuru kwekugadzira uye pa-site kuvaka.
Izvo zvinodikanwa zvezviridzwa munzvimbo dzine njodzi zvakaderedzwa zvakanyanya, uye hapana chikonzero chekushandisa midziyo yega panzvimbo.
Sezvo mitsara yechiratidzo isingadi kugovera pasi, kugadzikana uye kupesana-kupindira kukwanisa kwekuona uye kutonga zviratidzo zvelop kunowedzera zvakanyanya, nokudaro kuvandudza kuvimbika kwehurongwa hwose.
Iyo yakasarudzika chengetedzo yekudzivirira ine yakasimba yekuisa chiratidzo chekugadzirisa masimba, uye inogona kugamuchira uye kugadzirisa masaini senge thermocouples, kupisa kupikisa, uye ma frequency, ayo aya zener kuchengetedza barriers haagone kuita.
Iyo yakasarudzika yekuchengetedza chipingamupinyi chinogona kuburitsa maviri akasarudzika masaini kuti ape maviri maturusi uchishandisa imwechete chiratidzo sosi, uye ive nechokwadi chekuti masaini ezvishandiso zviviri izvi hazvikanganise mumwe nemumwe, uye panguva imwechete inovandudza magetsi ekuchengetedza ekudzivirira kushanda pakati peyakabatana. zvishandiso.
Izvo zviri pamusoro apa ndezvemusimboti wekushanda uye kushanda kwechivharo chekuchengetedza, uye ruzivo rwemusiyano pakati pechivharo chekuchengetedza uye chekuzviparadzanisa nevamwe.Iyo yekuparadzanisa chiratidzo kazhinji inoreva kune inoparadzanisa chiratidzo mune isina kusimba yazvino sisitimu, iyo inodzivirira yakaderera-chikamu chechiratidzo system kubva mukukanganiswa uye kukanganiswa kweiyo yepamusoro-level system.Chivharo chekuzviparadzanisa chechiratidzo chakabatana pakati peiyo intrinsically yakachengeteka dunhu uye isiri-intrinsically yakachengeteka sedunhu.Mudziyo unoganhura voltage kana kuti current inopihwa kune intrinsically safe circuit mukati me safe range.
Nguva yekutumira: Nov-26-2022