Kwiinkqubo zoshishino ezisusela ekuvelisweni kweekhemikhali ukuya kunyango lwamanzi amdaka, ukulinganiswa kolwelo kujongana nemingeni engapheliyo. Iiasidi ezibolayo, iislurry ezixineneyo, kunye neeslurry ezirhabaxa ezinee-solid particles ziye zavavanya imida yee-flow meter zemveli, nto leyo ekhokelela ekuqhekekeni rhoqo, ukufundwa okungachanekanga, kunye nexesha lokungasebenzi elibizayo. Ngokuchasene nale meko, ii-electromagnetic flow meters (EMFs) ziye zavela njengesisombululo esomeleleyo, esenzelwe ukoyisa iimeko ezinzima zolwelo. Ngokungafaniyo nee-mechanical meter eziwela ekugugeni, ukuvaleka, okanye ukuhlaselwa ziikhemikhali, ii-EMF ziyachuma apho ezinye zisilela khona—okungqina ukuba akukho fluid inzima kakhulu ukuyilinganisa ngokuchanekileyo nangokuthembekileyo.
Iitekhnoloji zokulinganisa ukuhamba kwamanzi zemveli ziyasokola ukuhambisana nolwelo olufunekayo. Umzekelo, iimitha ze-turbine zixhomekeke kwiiblade ezijikelezayo ezigugiswa lula ziisuntswana ezirhabaxa okanye ezigalelwe ziifluid ezixineneyo ezifana ne-molasses okanye i-sludge. Iipleyiti ze-orifice kunye neetyhubhu zeVenturi zidla ngokuvaleka xa ziphethe i-slurry, ngelixa izinto zazo zesinyithi zidlaka ngokukhawuleza xa zidibana neekhemikhali ezifana ne-hydrochloric acid okanye i-sodium hydroxide. Le mida iguqulela ekuchanekeni okungalunganga: imitha evalekileyo okanye egugileyo inokuphambuka nge-10% nangaphezulu kwizinga lokuhamba kwamanzi lokwenyani, okukhokelela kwidosi engalunganga kwiinkqubo zeekhemikhali, ukubiza kakhulu ekuthuthweni kolwelo, okanye ukungathobeli imithetho yokusingqongileyo. Kumashishini apho iipropati zolwelo zitshintsha-tshintsha—njengokulungiswa kokutya, apho i-viscosity itshintsha ngobushushu—iimitha zemveli aziniki kuguquguquka okuninzi, zifuna uhlengahlengiso okanye ukutshintshwa rhoqo.
Iimitha zokuhamba ze-electromagnetic zoyisa le mingeni ngoyilo olwahlukileyo ngokupheleleyo: zilinganisa ukuhamba ngaphandle kokudibana ngqo neendawo ezihambayo, zisebenzisa uMthetho kaFaraday wokungenisa i-Electromagnetic. Nantsi indlela esebenza ngayo: umbhobho wemitha ugqunywe ngezinto ezichasene neekhemikhali (ezifana ne-PTFE, irabha, okanye i-ceramic), ngelixa ii-electrode ezimbini ezifakwe kwi-lining zivelisa intsimi yemagnethi kulwelo. Njengoko ulwelo oluqhubayo luhamba phakathi kwentsimi, lubangela umbane ohambelana nesantya sawo—le voltage ilinganiswa zii-electrode kwaye iguqulwe ibe yidatha yesantya sokuhamba. Ukungabikho kweendawo ezihambayo kususa ukuguguleka okuvela kwi-abrasives kunye nokuvaleka kolwelo oluxineneyo, ngelixa i-lining engeyiyo yesinyithi isebenza njengomqobo kwizinto ezirhabaxa. Olu yilo luqinisekisa ukuba ii-EMF zihlala ziqinile kwaye zichanekile nokuba ziphethe ulwelo oluya kutshabalalisa iimitha zemveli.
Okwenza ii-EMF zibe nobuchule ngokwenene kukukwazi kwazo ukuzivumelanisa neempawu zolwelo ezigqithisileyo. Kwiziselo ezirhabaxa—ukusuka kwiiasidi zoshishino kunye nee-alkalis ukuya kumanzi olwandle kunye nezinyibilikisi zeekhemikhali—izinto zomngxuma wemitha zinokwenziwa ngokwezifiso ukuze zihambelane nosetyenziso. Izingxobo ze-PTFE ziyamelana neekhemikhali ezininzi zendalo kunye nezingaphiliyo, nto leyo ezenza zibe zilungele iinkqubo zamayeza okanye ze-petrochemical, ngelixa izingxobo zerabha zibalaseleyo ekuphatheni izingxobo ezirhabaxa ezinamasuntswana amakhulu, njengeentsalela zemigodi okanye amanzi amdaka anesediment. Izingxobo ezirhabaxa, kuquka izincamathelisi, izithambisi, kunye neemveliso zokutya ezifana netshokholethi okanye isiraphu, zihamba kakuhle kumbhobho ongaphazanyiswanga we-EMF, kungekho ndlela zimxinwa ezinokubangela ukwakheka. Kwanolwelo olurhabaxa olunesanti, igrabile, okanye iziqwenga zesinyithi ludlula ngaphandle kokonakalisa imitha, njengoko kungekho zinto zijikelezayo zokubola. Oku kuguquguquka kuthetha ukuba i-EMF enye inokusingatha iintlobo ezininzi zolwelo kumanqanaba ahlukeneyo enkqubo, inciphisa isidingo seemitha ezikhethekileyo.
Ngaphaya kokuqina, ii-EMF zibonelela ngokuchanekileyo okubalulekileyo kwizicelo ezibalulekileyo. Zigcina ukuchaneka ngaphakathi kwe-±0.5% yesikali esipheleleyo (kwaye zihlala zingcono) kuluhlu olubanzi lokuhamba kwamanzi, ukusuka kwisantya esiphantsi (esiphantsi njenge-0.01 m/s) ukuya kumazinga aphezulu okuhamba kwamanzi afanelekileyo kwiipayipi zoshishino. Oku kuchaneka kubalulekile ekucutshungulweni kweekhemikhali, apho ukuchaneka kwemilinganiselo yezinto eziluhlaza kuqinisekisa umgangatho kunye nokhuseleko lwemveliso, kunye nonyango lwamanzi amdaka, apho idatha echanekileyo yokuhamba kwamanzi ixhasa ukuthotyelwa kwemida yokukhupha. Ii-EMF zikwagqwesa ekulinganiseni ulwelo olungalinganiyo, olufana ne-slurry enomxholo oqinileyo owahlukeneyo, odibanisa iimitha zemveli. Ukukwazi kwazo ukubonelela ngedatha ehambelanayo nethembekileyo nakwiimeko zolwelo olungagungqiyo kuzenza zibe yimfuneko kumashishini apho ulawulo lwenkqubo lubaluleke kakhulu.
Iingenelo ezisebenzayo ze-EMFs zifikelela ekusebenzeni kakuhle nasekugcineni iindleko. Njengoko zingenazo iindawo ezishukumayo zokugcinwa okanye zokutshintshwa, zifuna ukugcinwa okuncinci—ngesiqhelo ukulinganiswa okwenziwa rhoqo emva kweminyaka eli-1-3, xa kuthelekiswa nokugcinwa kwekota nganye kweemitha zoomatshini. Oku kunciphisa iindleko zokungasebenzi kunye nokugcinwa, ingakumbi kwiindawo ezinzima ukufikelela kuzo ezifana nemibhobho engaphantsi komhlaba okanye useto lwemizi-mveliso olushushu kakhulu. Ii-EMFs nazo kulula ukuzifaka, kunye neendlela zokufaka i-flange, i-wafer, okanye ukufakwa kwe-insertion ezifanelana nemibhobho ekhoyo ngaphandle kotshintsho olukhulu. Ii-EMF ezininzi zanamhlanje zidibanisa uqhagamshelo lwe-IoT, zivumela ukujonga amazinga okuhamba ngexesha langempela, izilumkiso zokuxilonga ukuguguleka kwe-lining okanye i-electrode fouling, kunye nokulinganiswa okukude. Olu lwazi lwedijithali luvumela ukugcinwa kwangaphambili, ukuthintela ukusilela okungalindelekanga kunye nokuqinisekisa ukusebenza okuqhubekayo.
Ukususela kwimigodi, ioyile negesi ukuya ekucutshungulweni kokutya kunye namayeza, ii-EMF ziye zaba lukhetho oluphambili kumashishini alwa nolwelo oluqinileyo. Kwizityalo zeekhemikhali, zilinganisa ii-reagents ezibolayo ngokuchanekileyo, ziqinisekisa iimpendulo ezikhuselekileyo nezisebenzayo. Kwiindawo zonyango lwamanzi amdaka, zisingatha udaka olurhabaxa kunye neearhente zokucoca ezibolayo, zibonelela ngedatha yokuphucula iinkqubo zonyango. Kwishishini lokutya neziselo, zilinganisa iimveliso eziqinileyo ezifana nobusi okanye i-tomato paste ngaphandle kokungcolisa ulwelo okanye incasa enobungozi. Kwanakwiindawo ezimandundu—ezifana nemibhobho yoxinzelelo oluphezulu okanye ukusetyenziswa kwe-cryogenic—ii-EMF zibonelela ngokusebenza okuzinzileyo, zingqina ukuguquguquka kwazo kumacandelo onke.
Njengoko iinkqubo zoshishino zikhula zintsonkothile kwaye imingeni yolwelo iba nzima ngakumbi, imfuno yokulinganisa ukuhamba okunokuthenjwa nokuguquguqukayo iya kwanda kuphela. Iimitha zokuhamba ze-electromagnetic zibonakala njengesisombululo esingalinganisi nje ulwelo—ziyaboyisa. Ngokuphatha ulwelo olurhabaxa, oluxineneyo, nolurhabaxa ngokulula, zisusa urhwebo phakathi kokuqina kunye nokuchaneka okukhathaza iimitha zemveli. Kumashishini, oku kuthetha ukunciphisa iindleko, ukuphuculwa kolawulo lwenkqubo, kunye noxolo lwengqondo ukwazi ukuba ukulinganisa ukuhamba kwazo kuxhomekeke kuyo nayiphi na imingeni.
Kwihlabathi apho ulwelo luyigazi lobomi kwishishini, iimitha zokuhamba kwe-electromagnetic ziiqhawe ezingadunyiswanga ezigcina iinkqubo zihamba kakuhle. Zingqina ukuba nokuba ulwelo lunzima kangakanani na, ukulinganisa ngokuchanekileyo akupheleli nje ekubeni yinto enokwenzeka—kuyasebenza. Njengoko ubuchwepheshe buqhubeka, ii-EMF ziya kuqhubeka zikhula, zibonelela ngokuqina okukhulu kunye nobukrelekrele. Kodwa okwangoku, zihlala ziyindlela yegolide yokusingatha ulwelo olufuna kakhulu, zichaza ngokutsha oko kunokwenzeka ekulinganisweni kokuhamba kweshishini.
Ixesha lokuthumela: Novemba-20-2025