I-Electromagnetic flowmeter(EMF), eyaziwa nangokuthi i-magmeter/mag flowmeter, iyithuluzi elisetshenziswa kabanzi lokulinganisa izinga lokugeleza koketshezi olusebenza ngogesi ezimbonini nasezinhlelweni zikamasipala. Ithuluzi linganikeza isisombululo esithembekile nesingaphazamisi sokulinganisa ukugeleza kwevolumu esebenzisa umthetho ka-Faraday, olungele okuphakathi nendawo okunoketshezi olusebenzayo.
Amandla ayo e-electromotive eyengelwe u-E angavezwa ngale fomula elandelayo:
E=KBVD
Kuphi
K= I-Flowmeter engaguquki
B = Umfutho wokungeniswa kazibuthe
V= isilinganiso sokugeleza kwesivinini esigabeni esiphambanayo sepayipi lokulinganisa
D= Ububanzi bangaphakathi bepayipi lokulinganisa
Isimiso Sokusebenza
Umgomo oyisisekelo wokusebenza kwe-mag flowmeter umthetho kaFaraday wokungeniswa kwe-electromagnetic induction. Ithi lapho i-conductor ihamba endaweni kazibuthe, amandla e-electromotive azohehwa.
Ikakhulukazi esimweni sokusebenza kwe-electromagnetic flowmeter, uketshezi oluguquguqukayo olugeleza ngepayipi lensimbi lusebenza njengomqhubi. Ipheya lamakhoyili lakha inkambu kazibuthe efanayo eqondana nendawo yokugeleza. Imigqa yamagnetic field izonqanyulwa ngokugeleza. Ngakho-ke amandla e-electromotive enziwe akhiqizwa futhi kamuva azwakale ngepheya lama-electrode ensimbi futhi acutshungulwe abe okukhiphayo kwesignali kagesi evamile.
Izinzuzo Magnetic Flow Ukulinganisa
Ubulula besakhiwo:Ukwakhiwa kwe-EMF akunazo izingxenye ezihambayo, ukungabikho kwazo kunciphisa ukuguga kwemishini kanye nesidingo sokugcinwa. Akukho futhi ukuthikamezeka ngaphakathi kwepayipi layo lokulinganisa elingase liholele ekuncipheni kwekhanda lokucindezela nokuvimbeka kwe-viscous medium.
Izidingo zokukhweza ezincane:Ukufakwa kwe-EMF kudinga ubude obufushane ngokuqhathaniswa bezigaba zamapayipi aqondile phezulu naphansi komfula. Isebenza ngokuzimela, i-mag flowmeter ayidingi isidlulisi sengcindezi esihlukile ukuze sisize ukulinganiswa kwayo. Ukugeleza kungalinganiswa nhlangothi zombili, kuncishiswe umkhawulo wokuma kwemitha futhi kulungele ukusetshenziswa kokuqapha ukugeleza okubuyela emuva.
Ukuhambisana:Isilinganiso sokugeleza kwe-Mag singabonisa ukusebenza okuzinzile nokuthembekile okungathinteki neze ngamapharamitha aphakathi nendawo wengcindezi, izinga lokushisa, ukuminyana kanye ne-viscosity. Izinto ezingenziwa ngendlela oyifisayo zolayini kanye nekhebhu yensimbi ye-electrode evimbela ukugqwala kanye nezimfuno ezimelana nokuguga, ezisebenza kububanzi obubanzi bamakhemikhali anolaka, udaka olubi, kanye nemithombo yezokuxhumana edinga uketshezi.
Ukunemba:Indlela ye-electromagnetic ifaka ukulinganisa okunembe kakhulu phakathi kwezindlela ezahlukahlukene zokulinganisa ukugeleza kwe-volumetric. Ukunemba kwe-EMF ngokuvamile kungu-±0.5% kuya ku-±0.2% wokufunda.
Ukulinganiselwa
I-Conductivity iyadingeka:Uketshezi lokulinganisa lwe-EMF luyadingeka ukuze kube ne-conductivity eyanele(≥5μS/cm). Ngakho-ke igesi kanye noketshezi olungaqhubeki kungaphezu kokufinyelelwa esilinganisweni sokugeleza kwe-electromagnetic. Imidiya evamile yezimboni engasebenzisi njengamanzi ahlanziwe isitimu, izinyibilikisi eziphilayo nemikhiqizo kawoyela ayikwazi ukusebenzisa le ndlela yokuqapha ukugeleza.
Ipayipi eligcwaliswe ngokugcwele:Ukusebenza kwe-EMF kudinga ukucwiliswa ngokuphelele kanye nokuxhumana okuqhubekayo kwama-electrode noketshezi oluqhutshwayo. Ngakho-ke ngesikhathi sokulinganisa inqubo kufanele iqinisekise ukuthi ingxenye yamapayipi e-EMF igcwaliswa ngokuphelele ne-medium ukuze kuzuzwe ukusebenza kahle.
Isicelo
Ngokusekelwe kumgomo wayo wokulinganisa oyingqayizivele, i-electromagnetic flowmeter ifaneleka ngokukhethekile ukukala uketshezi olusebenzayo ezimweni ezifana nalezi:
Ukuhlinzekwa kwamanzi:Ukulinganisa amanzi aluhlaza kanye nokugeleza kwamanzi asekhishini ahlanzekile ukuze kuphathwe imithombo yamanzi.
Ukuhlanza Indle: Ukulinganisa indle kamasipala, ukungcola kwasezimbonini, kanye nodaka ngendlela efanele.
Ikhemikhali:Ukulinganisa ama-asidi ahlukahlukene, i-alkali, izixazululo zikasawoti, nezinye imidiya egqwala kakhulu kusetshenziswa ama-linings resistant corrosion and electrode materials.
Isiphuzo:Ukulinganisa izinto zokusetshenziswa, okuphakathi kanye nemikhiqizo eqediwe ngesikhathi sokukhiqizwa kobisi, ijusi, isiphuzo esidakayo nezinye iziphuzo.
I-Metallurgy:Ukulinganisa udaka lwamaminerali, i-slurry emsila, amanzi anodaka lwamalahle ekucutshungulweni kwe-ore ngezinto ezingagugi.
Amandla:Ukulinganisa amanzi okupholisa ajikelezayo, i-condensate, uketshezi lokwelapha amakhemikhali ezinqubweni zezitshalo zamandla, njll.
Shanghai Wangyuanineminyaka engaphezu kwengu-20 yesipiliyoni sokukhiqiza nokusevisa izinsimbi zokulinganisa. Ulwazi lwethu olubanzi lobungcweti kanye nezifundo zezenzakalo kuzo zonke izinkambu ezinazo zonke izinhlobo zamamitha okugeleza zisenza sikwazi ukunikeza izixazululo zokuqapha ukugeleza ezihlangabezana nezidingo zakho ngqo. Uma kukhona imibuzo nezidingo mayelana namamitha okugeleza kagesi, sicela ungangabazi ukuxhumana nathi.
Isikhathi sokuthumela: Jun-03-2025