Ukusabela okubangelwa uthungelwano olufutshane lwee-arc ezinkulu kunye neziphakathi eziphantsi kwamanzi zibandakanya malunga ne-70% yendlela yokusebenza yesithando sokufudumala.Uthungelwano olufutshane lwesithando somlilo se-arc lubhekisela kwixesha eliqhelekileyo kwiindlela ezahlukeneyo zoxinzelelo oluphantsi kunye nabaqhubi bombane abaphezulu bangoku ukusuka kwinqanaba eliphantsi lokuphuma kweqela le-transformer yesithando sombane ukuya kwinqanaba lombane.Nangona ubude bomnatha obufutshane besithando somlilo se-arc bungekho bukhulu, izichasi ezimfutshane zenetha kunye nokusabela kunempembelelo enkulu kwisixhobo sesithando somlilo se-arc esintywiliselweyo.Ngenxa yesakhiwo sayo esinzima, ikhoyo ngoku edlula kuyo ifikelela kumakhulu amawaka e-ampere.Ngenxa yokuba ixabiso le-reactance ye-short-circuit ngokuqhelekileyo li-3 ukuya kwi-6 amaxesha e-resistor, i-reactance ye-short-circuit inquma ubukhulu becala ukusebenza kakuhle, amandla ombane kunye nenqanaba lokusetyenziswa kwamandla kwi-arc furnace.
Indlela yembuyekezo yesandla eqhelekileyo kukudibanisa ibhanki yembuyekezo ye-capacitor ye-series kwi-high-voltage ibhasi kwicala eliphambili le-arc furnace transformer, oko kukuthi, imbuyekezo ye-voltage ephezulu.Ekubeni umphumo wembuyekezo unokuzuza kuphela kumgca phambi kwendawo yokufikelela kunye necala legridi yamandla yenkqubo yonikezelo lwamandla, inkqubo yonikezelo lwamandla inokuhlangabezana neemfuno ezihambelana nomba wamandla womgca womthwalo, kodwa ayikwazi ukuhlawula i-windings ye-transformer. , inethiwekhi emfutshane, kunye nee-electrodes ze-furnace yasemgodini.Amandla asebenzayo azo zonke i-second-side low-voltage kunye ne-high-current circuits, oko kukuthi, izixhobo azikwazi ukuzuza ngokunyuka kwemveliso yeemveliso zomlilo kunye nokunciphisa ukusetyenziswa kwamandla kunye nokusetyenziswa kwemigodi.
Ngokuqhelekileyo, ukubeka imilinganiselo yokulinganisa i-harmonic kunye nemilinganiselo egxininisiweyo ye-harmonic inokudibaniswa ukuze yenze i-harmonic countermeasure eneendleko ezisebenzayo.Kwimithwalo yemithombo ye-harmonic enamandla amakhulu (njengama-furnaces aphindaphindiweyo, i-inverters, njl.), i-harmonic countermeasures ingasetyenziselwa ukubeka i-harmonic countermeasures , ukunciphisa i-harmonic current efakwe kwigridi.Amandla amancinci ngokulinganayo kunye nemithwalo esasazekileyo engahambelaniyo inokulawulwa ngokufanayo ebhasini.I-Hongyan APF filter esebenzayo ingasetyenziswa, kunye nolawulo lwe-harmonic nalo lunokusetyenziswa.
I-furnace ye-arc ephantsi kwamanzi isetyenziselwa umbane ophezulu wokunyibilikisa umbane kunye neempawu ze-resistor electric arc furnace.Umbane wamandla unqunywe yi-arc kunye nokumelana no-R kwisithando somlilo kunye nexabiso lokumelana no-R kunye ne-reactance X kwisiphaluka sonikezelo lwamandla (kubandakanya i-transformers, i-short-circuit networks, i-collector rings, i-jaws conductive kunye ne-electrodes).
cosφ=(r #+r)/ukumelana ne-x ixabiso le-resistor r ngokuqhelekileyo alitshintshi xa i-furnace ye-arc entywilisiweyo isebenza, zixhomekeke kuyilo kunye nokufakelwa kwenethiwekhi emfutshane kunye noyilo lwesiteji sombane.Ukumelana no-R kuhambelana nokuqina kwangoku kwamacandelo amancinci anyukayo ngexesha lenkqubo yokusebenza, kwaye utshintsho alukho lukhulu, kodwa ukuchasana kwe-R yinto ebalulekileyo ekunqumeni amandla ombane we-arc eziko ngexesha lenkqubo yokusebenza. .
Kuba isithando somlilo se-arc esintywiliselweyo sinokuxhathisa okubuthathaka kunezinye iziko lokunyibilikisa lombane, amandla alo nawo ancitshiswe ngokufanelekileyo.Ukongeza kwireyithi yamandla endalo yeziko lomgodi omncinci ngokubanzi elifikelela ngaphezulu kwe-0.9, amandla endalo eziko lomgodi omkhulu kunye nomthamo ongaphezulu kwe-10000KVA konke kungaphantsi kwe-0.9, kwaye ubukhulu bendawo yeziko lomgodi, amandla asezantsi asezantsi. into.Oku kungenxa yomthwalo omkhulu wokufakelwa kwe-arc iguquguqukayo yesithando somlilo kwisithuba esikhulu, ixesha elide lothungelwano olufutshane, kunye nobunzima benkunkuma efakwe eziko, okwandisa ukusabela kothungelwano olufutshane, ngaloo ndlela kuncitshiswa amandla ombane. yeziko learc elintywiliselweyo.
Ukuze kuncitshiswe ukusetyenziswa kwegridi yamandla kunye nokuphucula umgangatho wenkqubo yokubonelela ngombane, i-Power Supply Bureau ichaza ukuba amandla enkampani yamandla kufuneka abe malunga ne-0.9, kungenjalo inkampani yamandla iya kohlwaywa ngezohlwayo ezinkulu.Ukongeza, umbane ophantsi uya kunciphisa amandla ombane ongenayo we-arc furnace, eya kwenzakalisa isinyibilikisi se-calcium carbide.Ke ngoko, okwangoku, ii-arc ezinkulu ezifakwe emanzini ekhaya nakwamanye amazwe kufuneka zifakele izixhobo zembuyekezo yamandla asebenzayo ukuze kuphuculwe amandla ombane we-arc ophantsi kwamanzi.
Imbuyekezo yokucoca umbane ophantsi
1. Umgaqo
Imbuyekezo ye-low-voltage sisixhobo sembuyekezo esingasebenziyo esisebenzisa iteknoloji yolawulo lwangoku kunye nobuchwepheshe benethiwekhi emfutshane ukudibanisa umthamo omkhulu, amandla ombane aphezulu ombane ophantsi kakhulu ukuya kwicala lesibini lesithando somlilo.Esi sixhobo ayisiyiyo kuphela intsebenzo engcono yomgaqo wembuyekezo yamandla asebenzayo, kodwa inokwenza ukuba amandla ombane eziko lomlilo aqhube ngexabiso eliphezulu, ukunciphisa ukusetyenziswa kwamandla asebenzayo womnatha omfutshane kunye necala eliphambili, kwaye ususe eyesithathu, eyesihlanu neyesixhenxe iharmonikhi.Ukulinganisela amandla okuphuma kwesigaba sesithathu ukwandisa umthamo wemveliso ye-transformer.Ingqwalasela yolawulo kukunciphisa iqondo elingalinganiyo lamandla amanqanaba amathathu kunye nokufezekisa amandla alinganayo amanqanaba amathathu.Yandisa imbiza yokubamba, ugxininise ubushushu, unyuse ubushushu bomphezulu weziko, kwaye ukhawuleze ukusabela, ukuze ufezekise injongo yokuphucula umgangatho wemveliso, ukunciphisa ukusetyenziswa, kunye nokwandisa imveliso.
Le teknoloji isebenzisa iteknoloji yembuyekezo yemveli ekhulileyo kwindawo ukuya kwicala lesibini le-voltage ephantsi yeziko lomgodi.Amandla asebenzayo avela kwi-capacitor adlula kumgca omfutshane, inxalenye yawo ifunnwe yi-transformer yesithando somlilo ukusuka kwinkqubo, kwaye enye inxalenye ihlawulela amandla asebenzayo okuguqula i-furnace transformer, inethiwekhi emfutshane kunye ne-electrodes.Ukulahlekelwa kwamandla kwandisa igalelo lamandla asebenzayo kwisithando somlilo.Ngelo xesha, imbuyekezo eyahlulwe ngesigaba iyamkelwa ukwenza amandla asebenzayo kwi-electrode yesigaba sesithathu sesithando somlilo se-arc esiphantsi kwamanzi alinganayo, ukwenzela ukuba kuphuculwe amandla ombane, ukunciphisa ukungalingani kwamandla esigaba sesithathu, kunye nokuphucula imveliso. isalathisi.
2. Ukusetyenziswa kwembuyekezo yombane ophantsi
Kwiminyaka yakutshanje, ngenxa yokuphuculwa ngokuthe ngcembe kwetekhnoloji yembuyekezo ye-voltage ephantsi, iskimu soyilo siye saba sigqibelele ngakumbi, kwaye umthamo uncitshiswe kakhulu.Abavelisi be-arc abafakwe emanzini baye bafunda malunga nokusebenza kwayo ekuphuculeni inzuzo yezoqoqosho kwii-arc eziphantsi kwamanzi.Isixhobo sembuyekezo ye-voltage ephantsi isetyenziswe ngokubanzi kwi-Submerged arc furnace transformer.
Izisombululo onokukhetha kuzo:
isicwangciso 1
Sebenzisa imbuyekezo yokucoca i-high-voltage (le meko yimbuyekezo eqhelekileyo, kodwa isiphumo sokwenene asihlangabezani neemfuno zoyilo).
Imeko yesi-2
Kwicala le-low-voltage, imbuyekezo yembuyekezo yesigaba esithathu esiguqukayo siyamkelwa.Emva kokuba isixhobo sokucoca sifakwe ekusebenzeni, amandla asebenzayo kwi-electrodes yesigaba sesithathu se-arc furnace ephantsi kwamanzi alinganayo, ukwenzela ukuba kuphuculwe umbane wamandla, ukunciphisa ukungalingani kwamandla amanqanaba amathathu, kunye nokuphucula isalathisi semveliso.
Ixesha lokuposa: Apr-13-2023