I-electromagnetic flowmeter (EMF), eyaziwa ngokuba yi-magmeter/mag flowmeter, sisixhobo esisetyenziswa kakhulu ekulinganiseni izinga lokuhamba kolwelo oluqhuba umbane kwizicelo zoshishino noomasipala. Esi sixhobo sinokubonelela ngesisombululo sokulinganisa ukuhamba komthamo esithembekileyo nesingenakuphazamisani sisebenzisa umthetho kaFaraday, esifanelekileyo kwi-liquid medium ene-conductivity efanelekileyo.
Amandla ayo e-electromotive abangelwa yi-E anokubonakaliswa ngale fomyula ilandelayo:
E=KBVD
Phi
K = I-Flowmeter engaguqukiyo
B = Ubunzulu bokufakelwa kwamagnetic
V= isantya sokuhamba esiphakathi kwicandelo elinqamlezileyo lombhobho wokulinganisa
D= Ububanzi bangaphakathi bombhobho wokulinganisa
Umgaqo Wokusebenza
Umgaqo osisiseko wokusebenza kwe-mag flowmeter ngumthetho kaFaraday wokungenisa i-electromagnetic. Uthi xa umqhubi ehamba kwi-magnetic field, amandla e-electromotive aya kubangelwa.
Ngokukodwa kwimeko yokusebenza kwe-electromagnetic flowmeter, ulwelo oluqhubayo oluhamba ngepayipi yesixhobo lusebenza njengomqhubi. Isibini seekhoyili senza i-magnetic field efanayo ethe nkqo kwicala lokuhamba. Imigca ye-magnetic field iya kunqunyulwa ngokuhamba. Ngenxa yoko, amandla e-electromotive abangelwayo aveliswa aze emva koko aviwe zizibini zee-electrodes zesinyithi aze acutshungulwe abe yimveliso yesignali yombane eqhelekileyo.
Iingenelo zoMlinganiselo woMsinga weMagnetic
Ubulula besakhiwo:Ulwakhiwo lwe-EMF alunazo iindawo ezishukumayo, apho ukungabikho kwayo kunciphisa ukuguguleka koomatshini kunye neemfuno zokugcinwa. Akukho ngxaki ngaphakathi kombhobho wayo wokulinganisa enokubangela ukuba intloko yoxinzelelo inciphe kwaye ivaleke i-viscous medium.
Iimfuno ezincinci zokufakelwa:Ukufakelwa kwe-EMF kufuna ubude obufutshane beenxalenye zepayipi ezithe tye eziphezulu nezisezantsi. Ukusebenza ngokuzimeleyo, i-mag flowmeter ayifuni i-differential pressure transmitter ukunceda ukulinganisa kwayo. Ukuhamba kwayo kunokulinganiselwa kuzo zombini iindlela, kunciphisa umda wokujonga imitha kwaye kufanelekile ukusetyenziswa kokujonga ukuhamba kwayo ngasemva.
Ukuhambelana:Ukulinganiswa kokuhamba kombane kunokubonisa ukusebenza okuzinzileyo nokuthembekileyo okungachaphazeleki kakhulu ziiparameter eziphakathi zomzimba zoxinzelelo, ubushushu, uxinano kunye ne-viscosity. Izixhobo ze-lining ezinokwenziwa ngokwezifiso kunye neentsimbi ze-electrode cab ezichasene nokugqwala kunye neemfuno ezingagugiyo, ezisebenza kwiindidi ezahlukeneyo zeekhemikhali ezirhabaxa, i-slurry erhabaxa, kunye ne-media yolwelo edinga ucoceko.
Ukuchaneka:Indlela ye-electromagnetic ibonakalisa ukulinganisa okuchanekileyo kakhulu phakathi kweendlela ezahlukeneyo zokulinganisa ukuhamba kwevolumu. Ukuchaneka kwe-EMF ngokubanzi kuxhomekeke ku-±0.5% ukuya ku-±0.2% yokufunda.
Imida
Ukuqhuba kombane kuyadingeka:Ulwelo lokulinganisa lwe-EMF luyimfuneko ukuze lube nokuqhuba okwaneleyo (≥5μS/cm). Ngenxa yoko igesi kunye nolwelo olungenamthuthi azifikeleleki kumlinganiselo wokuhamba kwe-electromagnetic. Izixhobo eziqhelekileyo zoshishino ezingezizo eziqhuba umphunga ezifana namanzi acocekileyo ngomphunga, izinyibilikisi zendalo kunye neemveliso zeoyile azikwazi ukusebenzisa le ndlela yokujonga ukuhamba.
Umbhobho ozaliswe ngokupheleleyo:Ukusebenza kwe-EMF kufuna ukuntywiliselwa ngokupheleleyo kunye nokudibana okuqhubekayo kwee-electrodes kunye nolwelo oluqhubayo. Ke ngoko ngexesha lokulinganisa inkqubo kufuneka iqinisekise ukuba icandelo lombhobho we-EMF lizaliswe ngokupheleleyo nge-medium ukuze kufezekiswe ukusebenza kakuhle.
Isicelo
Ngokusekelwe kumgaqo wayo wokulinganisa owahlukileyo, i-electromagnetic flowmeter ifanelekile ngokukodwa ekulinganiseni ulwelo oluqhubayo kwiimeko ezifana nezi:
Ubonelelo ngamanzi:Ukulinganisa amanzi angena ngaphakathi kunye nokuhamba kwamanzi acociweyo ukuze kulawulwe imithombo yamanzi.
Unyango lwelindle: Ukulinganisa ilindle likamasipala, amanzi amdaka emizi-mveliso, kunye nodaka ngendlela efanelekileyo yokuqhuba umbane.
Ikhemikhali:Ukulinganisa ii-asidi ezahlukeneyo, i-alkali, izisombululo zetyuwa, kunye nezinye izinto ezibangela ukubola kakhulu kusetyenziswa ii-linings ezimelana nokubola kunye nezinto ze-electrode.
Isiselo:Ukulinganisa izinto ezikrwada, izinto eziphakathi kunye neemveliso ezigqityiweyo ngexesha lokuveliswa kobisi, ijusi, iziselo ezinxilisayo kunye nezinye iziselo.
Ubugcisa besinyithi:Ukulinganisa i-mineral slurry, i-tailing slurry, amanzi e-coal slurry ekucutshungulweni kwe-ore ngezinto ezingagugiyo.
Amandla:Ukulinganisa amanzi okupholisa ajikelezayo, i-condensate, ulwelo lonyango lweekhemikhali kwiinkqubo zesityalo samandla, njl.
Shanghai Wangyuanunamava angaphezu kweminyaka engama-20 ekuveliseni nasekulungiseni izixhobo zokulinganisa. Ulwazi lwethu olubanzi lobuchwephesha kunye nezifundo zeemeko kuzo zonke iintlobo zeemitha zokuhamba zisenza sikwazi ukubonelela ngezisombululo zokujonga ukuhamba ezihlangabezana neemfuno zakho ngokuchanekileyo. Ukuba kukho nayiphi na imibuzo kunye neemfuno malunga neemitha zokuhamba nge-electromagnetic, nceda ungathandabuzi ukunxibelelana nathi.
Ixesha lokuthumela: Juni-03-2025