Kwimizi-mveliso efana neekhemikhali, i-metallurgy, unyango lwamanzi amdaka, iphepha kunye nokwembiwa kwemigodi, izinto zokulinganisa ukuhamba kwamanzi zihlala zibonisa iimpawu ezinzima kubandakanya ukubola okuqinileyo okanye okuxineneyo. Izixhobo zokulinganisa ukuhamba kwamanzi eziqhelekileyo ezifana nepleyiti ye-orifice okanye i-vortex flowmeters zihlala zijongene nemiba efana nokuvaleka, ukuguguleka, ukungaphumeleli kokugqwala okanye ukulahleka kokuchaneka xa kusetyenzwa ngolu hlobo. Ukusebenzisa umgaqo wayo wokulinganisa owahlukileyo kunye neempawu zesakhiwo,i-flowmeter ye-electromagneticithathwa njengesixhobo esikhethwayo sokulinganisa ukuhamba kwamanzi amdaka nanokubola kwicandelo lolawulo lweenkqubo zoshishino.
I-flowmeter ye-electromagnetic isebenza ngokusekelwe kumthetho kaFaraday wokungeniswa kwe-electromagnetic. Lo mgaqo uyalela ukuba ii-flowmeter ze-electromagnetic zixhomekeke kuphela kwi-electrical conductivity yolwelo kwaye azixhomekekanga kwizinto ezifana nobuninzi bolwelo, i-viscosity, ubushushu kunye noxinzelelo. Ngokwesakhiwo, ityhubhu yokulinganisa ye-flowmeter ye-electromagnetic ine-housing, i-liner kunye nee-electrodes. I-liner inxibelelana ngqo ne-process medium, ibonelela ngokukhusela ukugquma kunye nokukhuselwa kokugqwala; ii-electrodes zifakwe kwi-liner kwaye zinxibelelana nolwelo ukuze zibone amandla e-electromotive abangelwayo; i-housing inika amandla oomatshini kwaye ixhasa isekethe ye-magnetic. Olu lwakhiwo lubeka isiseko sokuziqhelanisa neemeko zokusebenza ezifuna amandla.
Imidiya engcolileyo idla ngokuba nezinto eziqinileyo ezixhonyiweyo, imicu okanye izinto ezixineneyo. Izinto ezithintela umbane, iindawo ezijikelezayo, okanye iindlela ezincinci zokuhamba kwamanzi ezifumaneka rhoqo kwiimitha zokuhamba zemveli zisengozini enkulu yokuvaleka okanye ukuguguleka. Iingenelo zemitha yokuhamba kwamanzi ye-electromagnetic phantsi kweemeko ezinjalo zokusebenza zibonakala kakhulu kwiinkalo ezimbini:
Ulwakhiwo olungenazithintelo:Itshaneli yokulinganisa i-electromagnetic flowmeter yipayipi ethe tye engenazo iindawo eziphumayo okanye ezihambayo ngaphakathi. Njengoko ulwelo luhamba kwisixhobo, akukho tshintsho lukhawulezileyo kwicandelo elinqamlezileyo, oluthintela amasuntswana aqinileyo okanye imicu ukuba ingaqokeleli ngaphakathi kwisixhobo. Xa kuthelekiswa neentlobo ngeentlobo zee-differential pressure flowmeters, i-electromagnetic flowmeter isusa umngcipheko we-clogged pressure tapping ports; nge-turbine kunye ne-positive displacement flowmeters, ithintela ukungaphumeleli okubangelwa kukuwa okanye ukuguguleka kwe-rotor.
Ukuziqhelanisa nokuhamba kwe-Solid-Liquid kwiZigaba ezibini:Isignali ye-electromagnetic flowmeter inokuhlala izinzile xa i-medium inee-solid particles kuba amandla e-electromotive abangelwa ikakhulu yi-flow velocity ye-liquid continuous phase. Ngaphezu koko, i-electromagnetic flowmeter isebenzisa iteknoloji ye-high-frequency excitation kunye ne-digital signal processing ethintela ngokufanelekileyo ingxolo ye-spike eveliswa zii-particles ezichaphazela ii-electrodes, igcina ukuchaneka okuphezulu ekulinganisweni kwe-solid-liquid flows ezifana ne-pulp, i-slurry kunye nodaka.
Ii-asidi ezahlukeneyo ezibolayo, ii-alkali, izisombululo zetyuwa, kunye nezinyibilikisi zendalo zibeka iimfuno ezingqongqo kukumelana nokubola kwezinto ezimanziswe yi-flowmeter. I-electromagnetic flowmeter ifumana ukwahlulwa okusebenzayo kunye nokulinganiswa okuthembekileyo kwemidiya ebolayo ngokusebenzisana phakathi kwe-lining kunye nezinto ze-electrode.
Izinto zokugqumaisebenza umsebenzi wokunxibelelana ngokuthe ngqo nesixhobo esiphakathi kunye nokusihlukanisa nendlu yesinyithi. Ngokuxhomekeke kwiimpawu zokubola kwesixhobo esiphakathi, izinto ezifana ne-PTFE, i-polyurethane, okanye irabha ye-chloroprene zinokukhethwa. I-PTFE ibonisa ukungangeni kakuhle kweekhemikhali, ekwaziyo ukumelana nokukhukuliseka okuvela kwiindawo ezininzi zokubola ngaphandle kweentsimbi ze-alkali ezinyibilikisiweyo kunye nee-fluoride ezithile, ngelixa ikwaneepropati ezilungileyo zokulwa nokunamathela.
Izinto ze-electrodeikhethwa ngokusekelwe kwiimpawu zokugqwala kwe-electrochemical ephakathi. Izinto ezisetyenziswa rhoqo ziquka i-SS316L, i-Hastelloy B/C, i-titanium, i-tantalum kunye ne-platinum alloys. Kwi-asidi egqwala kakhulu okanye izisombululo eziqulethe ii-ion ze-chloride, ii-electrode ze-tantalum okanye zeplatinum zinokubonelela ngokhuseleko oluthembekileyo. Ngokukhetha okucwangcisiweyo kwezinto ze-lining kunye ne-electrode, i-flowmeter ye-electromagnetic inokuqhelana neemeko ezahlukeneyo zokusebenza ukusuka kwencinci ukuya kweyona igqwala kakhulu.
I-electromagnetic flowmeter ikwanazo nezinye iimpawu ezibanzi ezenza kube lula ukulinganisa izinto ezingcolileyo nezirhabaxa:
Ukulahlekelwa yingcinezelo ephantsi:Ngenxa yokungabikho kwe-throttling element, akukho lahleko yoxinzelelo eyongezelelweyo ngexesha lokulinganisa nge-electromagnetic flowmeter enokuba luncedo kakhulu kwi-high-viscosity medium okanye inkqubo yenkqubo enomthamo omncinci wokuhambisa.
Uzinzo oluPhezulu lweXesha elide:I-electromagnetic flowmeter ayinazo izinto ezihambayo, nto leyo ethintela iingxaki ezifana nokudinwa koomatshini, ukuguguleka okanye ukuxhuzula. Ukuba nje izinto ze-lining kunye ne-electrode zikhethwe ngokufanelekileyo, ukuzinza kwayo kokusebenza ixesha elide kunokuba ngcono kakhulu kune-mechanical okanye throttling flowmeters, kunye neemfuno zokugcinwa ezinciphileyo.
Ei-electromagnetic flowmeteribonisa iingenelo ezikhethekileyo ekulinganiseni imidiya engcolileyo/egqwalisayo. Nangona kunjalo, ukusebenza kakuhle kwaso nasiphi na isisombululo sobugcisa kwakhelwe phezu kwesiseko seemeko ezifanelekileyo. Kubaluleke kakhulu ukuqaphela ukuba imfuneko yokulinganisa i-electromagnetic flowmeter kukuba i-medium elinganisiweyo kufuneka ibe nenqanaba elithile lokuqhuba umbane (ngesiqhelo kungabi ngaphantsi kwe-5~15).μS/cm). Kwizinto ezingezizo eziqhuba umbane okanye eziqhuba umbane kancinci ezifana namanzi angenawo i-ion, izinyibilikisi ze-hydrocarbon, kunye neeoyile, lo mgaqo awukwazi ukuvelisa amandla e-electromotive asebenzayo kwaye umisele umlinganiselo onokwenzeka.Shanghai Wangyuanngumenzi wezixhobo zobuchwephesha onamava angaphezu kweminyaka engamashumi amabini kushishino. Ukuba unayo nayiphi na imfuno okanye imibuzo malungai-flowmeterukhetho, nceda uzive ukhululekile ukunxibelelana nathi ukuze ufumane inkxaso yobugcisa kunye nezisombululo.
Ixesha leposi: Matshi-26-2026