Iimitha zokuhamba ze-electromagnetic (ezaziwa ngokuba ziimitha ze-mag) zisetyenziswa kakhulu ekulinganiseni ukuhamba kolwelo oluqhubayo kwizicelo zoshishino. Zisebenza ngokusekelwe kuMthetho kaFaraday wokungeniswa kwe-electromagnetic kwaye azinazo iindawo ezihambayo, nto leyo ezenza zichaneke kakhulu kwaye zithembeke kwimisebenzi eyahlukeneyo yokulinganisa ukuhamba komoya. Elinye icandelo elibalulekileyo leemitha zokuhamba kwe-electromagnetic yi-electrode, edlala indima ebalulekileyo kwinkqubo yokulinganisa. Ukukhethwa kwezinto ze-electrode kunye noqwalaselo kuxhomekeke kwizinto ezininzi, ezifana nolwelo olulinganiswayo, iimeko zokusingqongileyo, kunye nokuchaneka kokulinganisa okufunekayo.
Izinto Ezibalulekileyo Eziqwalaselweyo Xa Kukhethwa Ii-Electrode
1. Ukuqhuba kolwelo
Iimitha zokuhamba kwe-electromagnetic zifuna ukuba ulwelo lukwazi ukuqhuba umbane ukuze umlinganiselo wokuhamba usebenze ngokufanelekileyo. Ii-electrodes zibona i-voltage eveliswayo xa ulwelo ludlula kwi-magnetic field ye-flow meter. Ke ngoko, ukukhetha izinto ze-electrode ezifanelekileyo kubalulekile ukuqinisekisa umlinganiselo ochanekileyo, ingakumbi ukuba umbane uphantsi okanye uphezulu.
2. Izixhobo ze-Electrode
Izinto ezisetyenziselwa ii-electrode kufuneka zihambelane neempawu zeekhemikhali zolwelo ukuqinisekisa ukuqina nokuthembeka. Izinto eziqhelekileyo ze-electrode ziquka:
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Intsimbi Engagqwaliyo (316L):Enye yezona zinto zisetyenziswa kakhulu kwi-electrodes, intsimbi engagqwaliyo inika ukumelana nokugqwala okuhle kwaye ifanelekile kwiintlobo ngeentlobo zeziselo, kuquka amanzi, i-slurry, kunye neekhemikhali ezininzi.
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I-Hastelloy (HC276):IHastelloy yintsimbi engamelani nokugqwala, eyaziwa kakhulu ngokukwazi kwayo ukumelana neekhemikhali eziqatha kunye namaqondo obushushu aphezulu.HC276Isetyenziswa rhoqo kumashishini afana namayeza, iikhemikhali, kunye nokulungiswa kokutya, apho kuxhaphake khona ukuchatshazelwa zii-asidi ezirhabaxa, ii-alkali, kunye nezinyibilikisi. Inika ukumelana okuphezulu kokugqwala kwaye ifanelekile ngakumbi kwiindawo ezinoxinzelelo oluphezulu kunye nobushushu obuphezulu.
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I-Titanium (iTa):Ii-electrode zeTitanium ziyakwazi ukumelana nokugqwala kwaye zilungele iimeko ezingqongekileyo, ingakumbi ezo ziquka amanzi olwandle, ii-asidi, kunye nezinye izinto ezigqwalise kakhulu. I-Tantalum (Ta) yenye into efanayo eneempawu ezibalaseleyo zokumelana nokugqwala, ingakumbi kwiincindi ze-asidi kunye nezisabela kakhulu. I-Tantalum ixabiseke kakhulu xa isebenzisana nee-asidi ezinamandla, kuquka i-sulfuric acid, i-hydrochloric acid, kunye nezinye izinto ezigqwalise kakhulu.
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Iplatinum (Pt):Iplatinum ayimelani kakhulu nokugqwala kweekhemikhali, nto leyo eyenza ukuba ifaneleke kwiincindi ezirhabaxa kakhulu, kodwa idla ngokusetyenziswa kwiindawo ezikhethekileyo ngenxa yexabiso layo eliphezulu. Ii-electrode zeplatinum ziyathandwa kwiindawo apho kufuneka ukuchaneka okugqithisileyo kunye nokungangeni kweekhemikhali, njengakwiiseti zelebhu okanye kwezinye iinkqubo zonyango kunye nohlalutyo. Uzinzo oluhle kakhulu lweplatinum kunye nokungamelani neekhemikhali ezahlukeneyo kwenza ukuba ilungele ukusetyenziswa okufuna ukusebenza rhoqo.
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Igrafayithi okanye iCarbon:Ezi zinto ngamanye amaxesha zisetyenziselwa ukwenziwa kwezinto ezirhabaxa kakhulu okanye ezirhabaxa. Ii-electrode ze-graphite nazo ziyamelana kakhulu nokugqwala kodwa zinokuba sengozini yokukhukuliseka phantsi kweemeko ezithile.
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Igolide:Ii-electrode zegolide zihlala zisetyenziswa kwiimeko ezifuna ukuchaneka okuphezulu kakhulu kwaye zihlala zifumaneka kwilebhu okanye kwizicelo ezikhethekileyo.
3. Uqwalaselo lwe-Electrode
Uqwalaselo lwe-electrode lunokuchaphazela ukuchaneka kunye novakalelo lwemitha yokuhamba kwamanzi. Ezona qwalaselo zimbini ze-electrode zixhaphakileyo zezi:
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Uqwalaselo lwe-Elektrode enye:Olu lungiselelo lubandakanya i-electrode enye yokunxibelelana kolwelo kunye nenye yesignali yesalathiso. Lulula kwaye lungabizi kakhulu kodwa lunokubonelela ngokuchaneka okuphantsi kwezinye iinkqubo.
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Uqwalaselo lwee-electrode ezininzi (ii-electrode ezine):Olu yilo lubandakanya ii-electrode ezininzi ezicwangciswe ngendlela ejikelezayo ejikeleze umbhobho. Olu lwakhiwo lubonelela ngemilinganiselo echanekileyo ngakumbi, ingakumbi kwizicelo ezine-viscous kakhulu okanye ezintsonkothileyo. Inokunceda ekunciphiseni iimpazamo ngenxa ye-polarization kunye nokuphazamiseka kwesignali.
4. Ukwaleka kunye noKhuselo lwe-Electrode
Kwezinye iimeko, ii-electrode zinokugqunywa okanye zikhuselwe ukuphucula ukusebenza kwizicelo ezithile. Umzekelo:
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Iingubo zeCeramic:Kwizinto ezirhabaxa kakhulu okanye ezirhabaxa, iingubo zeseramikhi zinokunceda ukukhusela ii-electrode ekonakalisweni kwaye zonyuse ubomi bazo.
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Iingubo ze-PTFE okanye ze-PFA:Kwiikhemikhali ezingasebenzisi mafutha okanye ezirhabaxa, ii-electrode coating ezenziwe ngee-fluoropolymers ezifana ne-PTFE okanye i-PFA zisetyenziselwa ukubonelela ngobushushu nokukhusela.
5. Ukumelana nobushushu kunye noxinzelelo
Ii-electrode kufuneka zikhethwe ngokusekelwe kwiimeko zobushushu kunye noxinzelelo lwesicelo. Umzekelo, ii-electrode ze-titanium, i-Hastelloy, kunye ne-platinum zilungele ngcono ukusetyenziswa kobushushu obuphezulu kunye noxinzelelo oluphezulu xa kuthelekiswa nee-electrode zentsimbi engagqwaliyo eqhelekileyo.
6. Ubungakanani beMitha yokuHamba kunye nokusetyenziswa kwayo
Ubungakanani kunye nohlobo lwemitha yokuhamba kwe-electromagnetic (umz., i-full-bore okanye i-insertion) nazo ziya kuchaphazela ukukhethwa kwe-electrode. Iimitha zokuhamba ezinkulu zihlala zifuna ii-electrode ezinkulu ukuze zisebenze kakuhle.
Isiphelo
Ukukhethwa kwee-electrode kwiimitha zokuhamba kwe-electromagnetic kubalulekile ukuqinisekisa ukulinganiswa okuchanekileyo kokuhamba, ngakumbi kwiindawo zoshishino ezinzima. Ngokuqwalasela ukuhanjiswa kolwelo, iimpawu zezinto ze-electrodes, ukwakheka kwee-electrodes, kunye neemeko zokusebenza (ezifana nobushushu, uxinzelelo, kunye nokuvezwa kweekhemikhali), ungakhetha izinto ezifanelekileyo ze-electrode kunye noqwalaselo lwesicelo sakho. Izinto ezifana ne-HC276 (Hastelloy), i-Ta (Tantalum), kunye ne-Pt (Platinum) zibonelela ngokumelana okuhle nokugqwala kwaye zifanelekile kakhulu kwizicelo ezifuna amandla. Ukukhethwa kwee-electrode ngokufanelekileyo kunokuphucula ixesha elide kunye nokuthembeka kwemitha yokuhamba, okwenza ibe yimpahla exabisekileyo kwiinkqubo zokulinganisa ukuhamba kwemizi-mveliso.
Ixesha lokuthumela: Matshi-03-2025