Kungani umehluko wentengo phakathi kohlobo olufanayo lwefrikhwensi ephakathi isithando somlilo esincibilikisa induction?

Ukuncibilika kwe-Midium frequency induction kunezinga eliphezulu lokushisa, ukusebenza kahle okuphezulu, ukulahlekelwa ukushisa okuphansi, ukulahlekelwa ukushisa okuphansi, izinga lokushisa eliphansi uma kuqhathaniswa ne-workshop, ukunciphisa ukukhiqizwa kwentuthu, ukonga amandla, ukukhiqiza okuthuthukisiwe, izimo zokusebenza ezithuthukisiwe, ukuncipha kwamandla okusebenza, kanye nendawo ehlanzekile yegumbi. Ikakhulukazi nge-cast iron, isithando somlilo esincibilikisa induction sinenzuzo ukuthola uketshezi lwensimbi enesulfure ephansi engenakuqhathaniswa ne-cupola. Lapho ukhetha isithando somlilo esincibilikisa imvamisa emaphakathi, inkampani esunguliwe kufanele ikhethe okulandelayo ngokuya ngomthamo we-transformer, izidingo zokukhiqiza, isilinganiso sokutshala imali, njll., lapho uthenga imishini.

1. Isimo sokuncibilika kokungeniswa kwefrikhwensi emaphakathi

1.1 Umthamo wesiguquli esincibilikisa imvamisa emaphakathi

Njengamanje, kugesi we-SCR full-bridge parallel inverter IF, ubudlelwano bezinombolo phakathi komthamo we-transformer namandla okunikezwa kwamandla yilokhu: inani lomthamo we-transformer = inani lokunikezwa kwamandla x 1.2

Okwe-IGBT i-half-bridge series inverter IF power supply (evame ukwaziwa njengeyodwa kokubili, eyodwa yokuncibilikisa ukufakwa okukodwa, okubili kokusebenza ngasikhathi sinye), ubudlelwano bezinombolo phakathi komthamo we-transformer kanye nokuphakelwa kwamandla yilokhu: inani lomthamo we-transformer = inani lamandla ukuhlinzeka x 1.1

I-transformer iyi-transformer yokuvuselela kabusha. Ukuze kuncishiswe ukuphazanyiswa kwama-harmonics, kukude ngangokunokwenzeka ngendiza ekhethekile, okungukuthi, ukunikezwa kwamandla okuvama okuphakathi okukodwa kufakwe i-rectifier transformer.

1.2 IF IF induction fuse line voltage

Ngokunikezwa kwamandla okuvama okumaphakathi angaphansi kuka-1000KW, kusetshenziswa amandla emboni yezigaba ezintathu wezintambo ezinhlanu, 380HZ, kanye nokunikezwa kwamandla okuphindaphinda okuphakathi kwe-50-pulse single-rectifier okuphakathi kuyalungiswa. Ngokunikezwa kwamandla efrikhwensi emaphakathi ngaphezu kuka-6KWY, kugxilwe ekusebenziseni amandla kagesi angenayo angu-1000V (abanye abakhiqizi basebenzisa i-660V noma i-575V). Ngenxa yokuthi i-750VZ noma i-575V iyizinga le-voltage elingajwayelekile, izesekeli azilungile ukuthenga, kunconywa ukuthi ungazisebenzisi). Lungiselela i-750-pulse-double-rectifier IF ukunikezwa kwamandla kagesi ngezizathu ezimbili: esinye siwukwandisa i-voltage elinganiselwe yokusebenza ngokwandisa i-voltage yolayini engenayo; okwesibili kukhulu Ama-harmonics akhiqizwa amandla azophazamisa igridi. Ukulungiswa okuphindwe kabili kungathola i-DC yamanje eqondile ngokuqhathaniswa. Umthwalo wamanje uyigagasi elingunxande, futhi i-voltage yomthwalo iseduze ne-sine wave, enciphisa umthelela wokuphazamiseka kwegridi kwezinye izinto zokusebenza.

Abanye abasebenzisi ngokungaboni baphishekele i-voltage ephezulu (abanye abangu-1000KW basebenzisa i-voltage yolayini engu-900V), futhi bathole ukonga amandla kusukela ngesikhathi esiphansi. Angazi noma lokhu kungenxa yezindleko zokuphila kwesithando somlilo sikagesi. Akufanelekile ukulahlekelwa, i-voltage ephezulu kulula ukunciphisa impilo yezingxenye zikagesi. , i-platoon yethusi, ukukhathala kwekhebula, ukuze impilo yesithando somlilo kagesi iyancipha kakhulu. Ngaphezu kwalokho, i-voltage ephezulu yabakhiqizi besithando somlilo kagesi, izinto zokusetshenziswa ziyancipha ngokwezinto zokwakha, ukonga izindleko. Abakhiqizi besithando somlilo kagesi ngokuqinisekile bazimisele ukwenza kanjalo (intengo ephansi yezindleko eziphansi.) Ukulahlekelwa kokugcina kusewukusetshenziswa kwabakhiqizi besithando somlilo kagesi.

2. Izidingo zekhono

Ngokuvamile, umthamo we-medium frequency induction melting furnace unganqunywa isisindo sezingcezu ngazinye kanye nesisindo sensimbi encibilikisiwe edingekayo ngosuku ngalunye lokusebenza. Bese unquma amandla kanye nemvamisa yokunikezwa kwamandla kwe-IF. Imishini yokushisa yokungeniswa iwumkhiqizo ongajwayelekile. Njengamanje, alikho izinga ezweni, futhi ukucushwa okujwayelekile kwemboni kuboniswa kuThebula 1.

Ithebula 1 Imingcele yokukhetha isithando somlilo sokuncibilika kwefrikhwensi emaphakathi

Kungabonakala kuThebula 1 ukuthi ukuminyana kwamandla esithandweni sokuncibilikisa imvamisa ephakathi nendawo kucishe kube ngu-500 KW/ton, okungaphansi kwenani eliphelele lethiyori lika-600-800 KW, ikakhulukazi uma kucatshangelwa ukuphila kolwelwesi nokuphathwa kokukhiqiza. Ngaphansi kokuminyana kwamandla aphezulu, ukunyakaziswa kwe-electromagnetic kuzokhiqiza ukukhuhla okuqinile kolwelwesi, futhi izidingo zezinto zokwenziwa kolayini, izindlela zokwakha isithando somlilo, izinqubo zokuncibilika, izinto zokwakha, nezinto ezisizayo ziphezulu. Ngokwalokhu kucushwa okungenhla, isikhathi sokuncibilika kwesithando somlilo ngasinye imizuzu engama-75 (okuhlanganisa ukuphakela, ukuhlenga ukungcola, ukucisha kanye nesikhathi sokushisa). Uma kudingekile ukunciphisa isikhathi sokuncibilika kwesithando somlilo ngasinye, ukuminyana kwamandla omthombo wamandla kunganyuswa ngo-100 KW/ton kuyilapho amandla omzimba wesithando somlilo engashintshi.

3. Ukukhetha kwesakhiwo

Ngokwemikhuba yezimboni, isithando somlilo esincibilikisayo sesakhiwo se-aluminium alloy nesinciphisi njengoba indlela yokutshekisa ngokuvamile yaziwa ngokuthi isithando somlilo segobolondo le-aluminium. Isithando somlilo esincibilikayo sokungeniswa sesakhiwo sensimbi esinesilinda esisebenza ngehydraulic njengesithando somlilo esitshekisayo ngokuvamile sibizwa ngokuthi isithando somlilo segobolondo lensimbi. Umehluko phakathi kwalokhu okubili ukhonjiswe kuThebula 2 kanye noMdwebo 1.

Ithebula lesi-2 Isithando somlilo segobolondo lensimbi nesithando somlilo segobolondo le-aluminium kuhlukile (thatha ithani elingu-1 lomlilo wensimbi njengesibonelo)

Uma kuqhathaniswa nesithando somlilo segobolondo le-aluminium, izinzuzo zesithando somlilo wegobolondo amaphuzu amahlanu:

I-1) Imangelengele futhi inhle, ikakhulukazi kwizithando zomlilo ezinkulu, ezidinga isakhiwo esiqinile esiqinile. Kusukela endaweni yokuphepha yesithando somlilo esitshekisayo, zama ukusebenzisa isithando somlilo segobolondo lensimbi.

2) Ijoka elenziwe ngezihlangu ze-silicon steel sheet futhi likhipha imigqa kazibuthe ekhiqizwe ikhoyili yokungeniswa, inciphisa ukuvuza kazibuthe, ithuthukisa ukusebenza kahle kokushisa, ikhulise ukukhiqizwa, futhi yonga amandla ngo-5% -8%.

I-3) Ukuba khona kwesembozo sesithando somlilo kunciphisa ukulahlekelwa ukushisa futhi kwandisa ukuphepha kwemishini.

I-4) Impilo ende yesevisi, i-aluminium ifakwe i-oxidized ekushiseni okuphezulu, okuholela ekukhathaleni kokuqina kwensimbi. Esizeni sebhizinisi elisunguliwe, kuvame ukubonakala ukuthi igobolondo lesithando somlilo segobolondo le-aluminium elisetshenziswe unyaka owodwa noma ngaphezulu liphukile, futhi isithando somlilo sensimbi sinokuvuza okuncane kakhulu kwamanje, futhi impilo yesevisi yemishini idlula kakhulu leyo yegobolondo le-aluminium. isithando somlilo.

I-5) Ukusebenza kokuphepha Isithando somlilo segobolondo lensimbi singcono kakhulu kunesithando somlilo wegobolondo le-aluminium. Lapho isithando somlilo segobolondo le-aluminium sincibilikiswa, igobolondo le-aluminium likhubazeka kalula ngenxa yokushisa okuphezulu nokucindezela okukhulu, futhi ukuphepha kubi. Isithando somlilo segobolondo lensimbi sisebenzisa i-hydraulic tilting furnace futhi siphephile futhi sithembekile.

Kungani amanani emodeli efanayo ehlukile? Ukhetha kanjani “isithando somlilo esincibilikisa imvamisa emaphakathi”?

Intengo yohlobo olufanayo lwesithando somlilo se-medium frequency induction ihluke kakhulu. Thatha isithando somlilo sethani elingu-1 elivame ukusetshenziswa njengesibonelo. Intengo yemakethe ngezinye izikhathi ihluka izikhathi eziningana, ehlobene nesakhiwo sesithando somlilo, ukukhethwa kwengxenye, okuqukethwe kwezobuchwepheshe, isevisi emva kokuthengisa kanye nekhwalithi. Isici esinezici eziningi sifanelekile.

Izinto ezihlukile

Igobolondo lesithando somlilo kanye nejoka: Ekukhetheni kwegobolondo lesithando somlilo segobolondo le-aluminium, isithando somlilo segobolondo le-aluminium eyithani elingu-1 sinesisindo segobolondo lesithando esingu-400Kg nogqinsi luka-40mm. Abanye abakhiqizi bavame ukuba nesisindo nokuqina okunganele. Ingxenye ebaluleke kakhulu yesithando somlilo wegobolondo yisinqumo sejoka. Ukukhethwa kohlobo olufanayo lwejoka lesithando somlilo wegobolondo kuhlukile. Umehluko wamanani mkhulu kakhulu. Ngokujwayelekile, ishidi lensimbi entsha ye-silicon egoqeka ephezulu ekwazi ukuvunyelwa ukubanda ene-Z11 kufanele kukhethwe. Insimbi ye-Silicon Ubukhulu beshidi buyi-0.3mm, futhi isakhiwo esihlanganisiwe siyamukelwa. I-arc yangaphakathi ye-arc kanye ne-arc eyindilinga yangaphandle yekhoyili yokungeniswa iyafana, ukuze ijoka lixhunywe eduze nohlangothi lwangaphandle lwekhoyili yokungeniswa, futhi ikhoyili enkulu yokuvimbela iphuma ngaphandle, futhi ijoka lihlangene I-stainless. ipuleti lensimbi nensimbi engagqwali kuyaboshelwa, kushiselwe futhi kulungiswe, futhi apholiswe ngamanzi.

(Abanye abakhiqizi basebenzisa imfucuza, akukho ukuma, noma amashidi ensimbi e-silicon asusiwe kuma-transformer asetshenzisiwe ukwenza amajoka,)

Ishubhu yethusi kanye nomugqa ofanayo: Umnyombo wesithando somlilo esincibilika umphumela weshubhu yethusi ebandayo ekhishwayo kanye neshubhu yethusi elicijile lekhoyili yokungeniswa. Ishubhu le-T2 le-copper extruded extruded eline-giant cross-section kufanele lisetshenziswe. Ukwelashwa kwe-insulation surface yeshubhu yethusi kufafazwa nge-electrostatically ukuze kuzuzwe ukwahlukanisa kwe-Class H. Ukuze kuvikelwe amandla ayo okuvikela, i-mica tape kanye neribhoni yengilazi engenayo i-alkali kuyasongwa futhi kusongwe phezulu kanye, bese Faka i-koqweqwe lwawo lokuvikela umswakama. Kukhona igebe elithile phakathi kokuphenduka kwekhoyili. Lapho udaka lwe-refractory luboshwe ku-coil, ubumba oluphikisayo kufanele lungene ngaphakathi kwegebe ukuze kuqiniswe ukunamathela kweglue ku-coil ku-coil. Ngemva kokwakhiwa kwe-cement refractory, indawo yangaphakathi ilula ukuze kube lula ukukhishwa kwe-lining. Ikhoyili ivikelekile, futhi izindandatho ezimbalwa zensimbi engagqwali zokupholisa amanzi zengezwa emaphethelweni aphezulu naphansi ekhoyili ukuze kwandiswe ukuqina kwawo wonke futhi kube lula ukunqanyulwa kokushisa.

(Abanye abakhiqizi basebenzisa ithusi noma amashubhu e-T3 ethusi, anokungahambi kahle kukagesi futhi kulula ukuphuka nokuvuza.)

I-SCR: I-thyristor esetshenziswa abakhiqizi abahlukahlukene ngokuvamile inekhwalithi engalingani. Izinga le-thyristor lihle, ukusabela kuyashesha futhi izinga lokuhluleka liphansi. Ngakho-ke, ama-thyristors abakhiqizi abaziwayo bakhethiwe, futhi ikhwalithi inokwethenjelwa futhi izinzile.

(Lapho ukhetha, umkhiqizi wesithando somlilo kagesi uyadingeka ukuze abonise umkhiqizi we-thyristor, kanye nesitifiketi somkhiqizo womkhiqizi we-thyristor. Ukulawula ikhwalithi i-thyristor yekhwalithi ye-H ithi: Xiangfan Taiwan Semiconductor Co., Ltd., Xi ‘i-Institute of Power Electronics, njll.)

Ikhabethe lamandla: Umkhiqizi ojwayelekile usebenzisa ikhabethe lephaneli yesifutho ejwayelekile. Hhayi ikhabethe elipendwe ngothayela. Futhi imininingwane yesayizi yekhabethe lamandla ijwayelekile. Abakhiqizi abangaguquki bamakhabethe kagesi nabo banciphile, ukuphakama, ububanzi nobukhulu akwanele, futhi ngisho namanye ama-reactors abekwe ngaphandle kwekhabhinethi yamandla. Ukunikezwa kwamandla kagesi we-IF womkhiqizi ojwayelekile kufakwe iswishi ene-voltage ephansi ngaphakathi, engadingi ukuthi umsebenzisi alungiselele ikhabethe lokushintshwa kwamandla kagesi. Abanye abakhiqizi abangajwayelekile abanalo iswishi ene-voltage ephansi efakwe ngaphakathi kwamandla kagesi. Okungabonakali kwandisa izindleko zomsebenzisi (amaswishi ekhwalithi enhle aphansi kagesi i-Huanyu, Chint, Delixi, njll.).

I-Capacitor : Ikhabhinethi ye-capacitor ebaluleke kakhulu yesinxephezelo samandla asebenzayo kufanele ifakwe inani elanele. Ngokuvamile, inani lesinxephezelo le-capacitor liphindwe izikhathi ezingu-18—-20 amandla okunikezwa kwamandla: Inani lesinxephezelo se-Capacitance (Kvar) = (20— 18) x ukunikezwa kwamandla. Futhi sebenzisa ama-capacitor abakhiqizi abajwayelekile.

I-Reactor : Izinto eziyinhloko ze-reactor yi-silicon steel sheet. Imikhiqizo emisha ekhiqizwe abakhiqizi abajwayelekile kufanele isetshenziswe, futhi amashidi ensimbi e-silicon aphinde agaywa ngesandla awakwazi ukusetshenziswa.

I-clamp yamapayipi amanzi : Kusethi ephelele yesithando somlilo esincibilikisa imvamisa ephakathi, kunenombolo enkulu yamapayipi amanzi axhunyiwe. Ukukhuluma ngokuqinile, izinsimbi zensimbi ezingenasici kufanele zisetshenziswe. Kungcono ukusebenzisa amafindo e-copper slip. Kulula ukufaka nokuqaqa amafindo ngaphandle kokulungiswa. Ifaneleka ngokukhethekile ukufaka isicelo kuzintambo ezipholile emanzini, ezihambisana nokudluliswa kwamanje futhi azibangeli ukuvuza kwamanzi, okuphephile futhi okuthembekile.

Ngaphezu kwamaphuzu angenhla, kunezinye izingxenye ongakhetha kuzo, ezifana ne-inverter non-inductive capacitors, i-non-inductive resistors, izintambo ezipholiswe ngamanzi, izinsimbi zethusi zokuxhuma, amapayipi amanzi, njll., okuzothinta izinga nentengo. kwemishini. Lapha asicacisi, ngithemba ukuthi ungakwazi ukunaka lapho ukhetha ukuthenga, zama ukudinga umenzi wesithando somlilo ukuthi anikeze imininingwane yezingxenye eziyinhloko nabakhiqizi, akakwazi ukumane angazinaki isakhiwo kanye nekhwalithi yemishini kunenani lentengo.

Njengoba isithando somlilo esiphakathi siwumkhiqizo ongajwayelekile, siyalwa ukuba senziwa kabusha, futhi ikhwalithi ihlobene eduze nentengo.

4, amandla ezobuchwepheshe

Abakhiqizi abajwayelekile batshale inqwaba yabasebenzi kanye nezinsizakusebenza zokucwaninga ubuchwepheshe obuthuthukisiwe, ngemishini ethuthukisiwe nobuchwepheshe obuhle kakhulu, okubonisa izici ezihlukene mayelana nesivinini sokuncibilika, ukusetshenziswa kwamandla kanye nokwehluleka kwemishini. Abakhiqizi abaningi abanazo izimo zokusebenzisa esitshalweni, izindleko ziphansi ngokwemvelo, futhi umthelela wezinqubo zokuhlanganisa nokuthumela ngekhwalithi mkhulu kakhulu. Abakhiqizi abahlukene, izinqubo ezihlukene, namanani ahlukene nawo akhiqiza izimfanelo ezihlukene.

5, ngemuva kwenkonzo yokuthengisa

Isevisi enhle yangemva kokuthengisa iyisiqinisekiso sekhwalithi yemishini. Kuyinto engenakugwemeka lapho imikhiqizo ye-electromechanical ihluleka. Lokhu kudinga isevisi enhle yangemva kokuthengisa. Abakhiqizi abajwayelekile banabasebenzi abanele bezobuchwepheshe kanye nekhono lokuqinisekisa isevisi yangemuva kokuthengisa. Isithando somlilo esincibilikisa imvamisa emaphakathi sinesikhathi sewaranti yonyaka owodwa ngemva kokusebenza okuphindaphindiwe okumile nokuguquguqukayo ngaphambi kokushiya ifekthri. Ngalesi sikhathi, noma yikuphi ukwehluleka kwemishini okubangelwa umthwalo ongeyena owomuntu kuzoba umthwalo womkhiqizi.

Ngamafuphi, ibhizinisi eliyisisekelo kufanele likhethe okokusebenza okufaneleka kakhulu kwesimo samanje sebhizinisi ngokwezidingo zangempela. Enqubweni yokukhetha, umenzi kufanele aqhathanise ukukhiqiza, ukumisa, izixazululo zobuchwepheshe, nezimo zengqondo zesevisi yangemva kokuthengisa yamathuluzi ukuze akhethe okokusebenza egculisayo.

Isithando somlilo esiphakathi nendawo sihlanganisa, i-transformer, i-air-opening, i-harmonic filter, i-inverter cabinet, ikhebula lamanzi, ikhoyili yokungeniswa, igobolondo lesithando somlilo nokunye okunjalo. Ukucushwa okuhlukile kuyenzeka emkhiqizweni ngamunye. Ingase yehluke kuye ngokuthi impahla, ifomu kanye nentengo. Kungcono ukuxoxa ngenani ngokwehlukana. Njengamanje, isithando somlilo esiphakathi siyathuthuka sibheke emandleni aphezulu kanye namandla amakhulu. Isithando somlilo esiyi-1 ton intermediate frequency sesivele sincane kakhulu. Njengamanje, azikho eziningi ezintsha, kodwa ubuchwepheshe buvuthiwe futhi bushibhile.