Umsebenzi onobuchule kwiziko, ngaba uyazazi iinkqubo ezintathu ze-alam ezinkulu ze amaziko okunyibilikisa induction?

Iinkqubo eziphambili zokukhusela i-alarm ye-furnaces yokuncibilika kwe-induction ibandakanya inkqubo yokupholisa amanzi, inkqubo yokukhusela umhlaba kunye nenkqubo yokukhusela i-overvoltage. Eli nqaku lazisa kwaye lihlalutya ezi nkqubo zokhuseleko zintathu ngokweenkcukacha.

1. Isixokelelwano sokupholisa samanzi

Inkqubo yokupholisa amanzi yeyona nkqubo ibalulekileyo encedisayo yesithando somlilo se-intduction melting, esinokwahlulwa ngokubanzi sibe ngamacandelo amabini: inkqubo yokupholisa umzimba wesithando somlilo kunye nenkqubo yokupholisa ikhabhinethi yombane.

Ikhoyili yesithando somlilo esinyibilikayo se-induction ilinyazwe ngumbhobho wobhedu osisikwere. Nangona i-resistantivity yobhedu iphantsi, i-current passing through inkulu, kwaye ikhoyo kwi-tube tube itshintshela kwicala lodonga lwe-crucible ngenxa yempembelelo yesikhumba. , Ukubangela ubushushu obuninzi bombhobho wobhedu (ngoko ipeyinti yokukhusela esetyenziselwa phezu kombhobho wobhedu kufuneka ibe namandla okumelana nokushisa okuphezulu). Ukuze kuqinisekiswe ukugqunywa kwekhoyili yesithando somlilo kunye nokhuseleko lwechibi elinyibilikisiweyo, umthamo owaneleyo wokupholisa kufuneka uqinisekiswe ngexesha lokunyibilika. Kwaye isixhobo sokupholisa akufuneki sivalwe phambi kokuba iqondo lobushushu lehle liye kutsho kwi-100°C. Inxalenye yokupholisa yekhabhinethi yombane isetyenziselwa ukupholisa i-thyristors, i-capacitors, i-inductors kunye nemivalo yobhedu eya kuvelisa ubushushu obuninzi ngexesha lokusebenza. Ukuze ufezekise umphumo omuhle wokupholisa, ngokuqhelekileyo kuyimfuneko ukufaka inqaba yokupholisa ezimeleyo ngaphandle. Ngokuxhomekeke kumandla ezixhobo, umzimba ozimeleyo wesithando somlilo kunye nenqaba yokupholisa ikhabhinethi yombane ngamanye amaxesha iyafuneka.

Iinkqubo eziqhelekileyo zokunyibilikisa isithando somlilo wamanzi zibandakanya ikakhulu:

① Ubushushu bamanzi, uxinzelelo kunye nemitha yokuhamba efakwe kumbhobho wokungena kwamanzi ijonge imilinganiselo yokungena kwamanzi yenkqubo yokupholisa amanzi. Xa ubushushu bamanzi budlula ixabiso elimiselweyo, amandla enqaba yokupholisa kufuneka anyuke ngokuzenzekelayo. Xa iqondo lokushisa lidlula ixabiso lesilumkiso okanye uxinzelelo kunye nokuhamba kuphantsi kakhulu, i-alamu kunye nokunikezelwa kwamandla kufuneka kuphazamiseke.

②Izinzwa zobushushu ezifuna ukusetwa kwakhona ngesandla zifakwe kuthotho kunye neendawo zokuphuma kwimibhobho yamanzi okupholisa umzimba wesithando somlilo kunye nekhabhinethi yombane. Ngexesha lokugcinwa, indawo engaqhelekanga inokumiselwa ngokukhawuleza ngokuhambelana neqhosha lokusetha kwakhona inzwa yeqondo lokushisa.

2. I-alamu yokumisa inkqubo ye-inverter

Ngethuba lokusebenza kwe-furnace yokuncibilika kwe-induction, i-coil yesithando somlilo kunye ne-capacitor yenza i-high-voltage resonance circuit. Nje ukuba uxhathiso lwe-insulation yomhlaba luphantsi, i-electrode yokukhutshwa komhlaba ene-voltage ephezulu ixhomekeke kwiingozi ezinkulu zokhuseleko. Ukuqinisekisa ukusebenza okuqhelekileyo kwezixhobo, inkqubo yokukhusela ukuvuza komhlaba kufuneka ifakwe.

Iinkqubo eziqhelekileyo zokukhusela ukuvuza komhlaba zenza imisebenzi emibini:

1) Khangela ukuba kukho iindlela ezingaqhelekanga ezinokumelana nomhlaba ophantsi phakathi kwee-capacitors, iikhoyili zesithando somlilo kunye neebhasi;

2) Khangela ukuba kukho ukuchasana okungaqhelekanga okuphantsi phakathi kwekhoyili yomzimba wesithando somlilo kunye nentlawulo yetsimbi. Oku kuxhathisa okuphantsi kunokubangelwa intlawulo yetsimbi ingena kwi-furnace lining ukuze ibangele “ukungena kwentsimbi” okanye umthamo wamanzi ogqithiseleyo kwi-furnace lining. Ubutyobo be-conductive obuwela kwilayini yesithando somlilo bunokubangela ukuba ukuchasana kwehle.

Umgaqo-nkqubo we-alam osetyenziswa ngokuqhelekileyo ngulo: sebenzisa umbane ophantsi-voltage we-DC kwisekethe ye-resonance, kunye ne-induction jikelele yokunyibilikisa iikhoyili zomzimba zifakwe kancinci. Ke ngoko, i-voltage ye-DC esetyenzisiweyo iya kuveliswa phakathi kwekhoyili kunye nedama elityhidiweyo. Eminye imisinga yokuvuza okuncinci inokubonwa ngemitha yemiliampere. Nje ukuba ukuvuza kwangoku kwanda ngokungaqhelekanga, kubonisa ukuba ukuxhathisa kwe-resonant circuit ukuya emhlabeni kuncipha ngokungaqhelekanga. Isithando somlilo esinyibilikisayo esisebenzisa ukukhuselwa kokuvuza komhlaba ngokuqhelekileyo sisebenzisa ucingo lwensimbi engenasici emazantsi omzimba wesithando somlilo ukuba ukhokelwe ukusuka kwisithando somlilo kunye nomhlaba. Oku kunokuqinisekisa ukungabikho kwe-zero ye-pool etyhidiweyo kwaye kuthintele iingozi zokhuseleko ngexesha lenkqubo yokususa i-slag. Inokuqinisekisa kwakhona ukuba inkqubo inokubona ngokuchanekileyo imeko “yokungena kwentsimbi”.

Ukuze ukhangele ukuba i-alarm alarm system isebenza ngokufanelekileyo nangaliphi na ixesha, ucingo olukhokelayo kwi-resonant circuit lunokudibaniswa nomhlaba ngokusebenzisa i-inductor kunye ne-contactor. Ngokulawula umnxibelelanisi ukuba enze ngokwendalo isiphaluka esifutshane emhlabeni, uvakalelo lwenkqubo ye-alamu inokubonwa phantsi kwesiseko sokuqinisekisa ukhuseleko. Ukuqinisekisa ukhuseleko lwenkqubo yokunyibilikisa, khangela ukuba isixhobo sokuvuza kwe-alarm yokuvuza komhlaba yesithando somlilo siqhelekile phambi kokuvulwa ngakunye kwesithando somlilo.

3. Ukhuseleko olugqithisiweyo kunye nokugqithisa

Umthwalo omfutshane wesekethe yonikezelo lwamandla ombane ophakathi okanye ukungaphumeleli kokuguqulwa kokuguqulwa kwangoku kuya kubangela ukuba i-rectifier circuit yenze i-short-circuit current ngokusebenzisa i-inverter circuit), ebeka isoyikiso kwi-rectifier yonke kunye ne-inverter thyristor, ngoko. isekethe yokukhusela kufuneka ifakwe.