Chafu cha kuhifadhi kwa ladle refining (chafu cha uhamiaji)

Tafsiri
Mfuko wa kutoa nishati (LF) ni vifaa muhimu katika sekta ya kutengeneza chuma na chuma, unatumika kwa uhusiano wa kukusanya nishati salama kwa mchakato wa kutengeneza chuma. Uwezo wake unaathirisha asili ufanisi, matumizi ya nishati na usalama wa kutengeneza chuma. Kwa maendeleo ya teknolojia ya kutengeneza chuma chafu, hasa ukurasa wa LF zinazozidi 40 tanu, muktadha na viwango vya teknolojia vya transformer vimeanza kusambaza kwa ufanisi na kimataifa, kuunda mwenendo wa teknolojia unaotofautiana kwa kuboresha uzalishaji, ulimwengu na upatikanaji mdogo.

Sifa Muhimu

Ufanisi wa Nishati: Matumizi madogo ya nishati wakati hawana mzigo/mzigo, ubora wa voltage za impedance; inatumia silicon steel ya Baowu/Nippon Steel 30Z130/30Q130. 

Usalama: Miaka 30+ ya muktadha; majukumu yote ya core yenye oblique, German Georg shear (<0.02mm burr), clamping ya low-magnetic steel. 

Uwezo wa Overload: Ufundishaji bila shida kwa 120% load kupitia oxygen-free copper windings, oil gaps ndogo, na cooling cylinder structures. Upatikanaji mdogo: miaka 10+ bila upatikanaji; vacuum oil injection, anti-aging seals, na folded plate tanks kuzuia leakage.

Vifaa

Core

• Chanzo: Inatumia silicon steel ya Baowu 30Z130 au Nippon Steel 30Q130, chanzo kinachotumika nchi zenye maendeleo.

• Muundo: Muundo wa full oblique-joint lamination pamoja na pull rods za low-magnetic steel plate kwa clamping, kurejesha punching holes ili kuhakikisha magnetic flux density uniform juu ya sehemu zote za core bila kubamba.

• Mchakato: Mstari wa shearing wa German Georg anaweza kudhibiti burrs ≤0.02mm (standard ≤0.05mm) na tofauti ya urefu ≤0.2mm/m, kuboresha lamination factor ili kupunguza moto wa eneo, sauti, na matumizi ya nishati wakati hawana mzigo.

Windings

• Chanzo: Oxygen-free copper magnet wires (P<0.017241 at 20°C) na precise insulation paper wrapping.

• Muundo: Oil gaps ndogo, internal/external oil baffles, na cooling cylinder structure kuboresha stability ya axial/radial, uwezo wa overload, na kupunguza matumizi.

• Solutions za High-Voltage: "8"-type coils kwa winding moja kwa high-load voltage regulation na bidhaa za 110kV-grade, kuboresha nguvu na kupunguza eddy current losses.

Body

• Muundo: Laminated wood kwa vitu vyote vya wood ili kuboresha rigidity ya lead frame; upper/lower pressboards vya insulation boards au epoxy molded parts kuboresha conductor-to-ground insulation distance na kupunguza "window height" dimensions.

• Insulation: Imported cardboard kwa main insulation, multi-coil integral assembly, na Norwegian steam drying equipment kuhakikisha kuondoka kabisa bila kuharibu insulation.

Oil Tank

• Muundo: Folded plate structure inapunguza welds, imejaribiwa kwa positive/negative pressure ili kuhakikisha sealing reliable.

• Kupunguza Losses: Low-magnetic steel au magnetic shielding katika maeneo muhimu inapunguza losses zinazozidi kutokana na busbar magnetic fields kwenye tank wall, kuboresha kupunguza leakage na losses.

Assembly

• Mchakato: Hydraulic compaction baada ya body drying na vacuum oil injection kuzima winding bubbles na kupunguza partial discharge.

• Sealing: Anti-aging sealing materials kusaidia kupunguza leakage ya mafuta; control circuits (gas relay, thermometers, etc.) imeunganishwa kwenye junction box ya juu kwa aina ya nyororo na moja.

Vifaa Viyao

• Cooling: YS1 water-coolers au stainless steel spiral plate coolers; anti-pollution high-voltage bushings kuboresha creepage distance.

• Tap Changers: Advanced "M" au "V" type kutoka kwa wajumbe wa awali na interfaces za display na control za mbali.

• Oil System: Karamay naphthenic anti-aging transformer oil katika mikiba fulani na valves za pressure relief na diaphragm conservators kwa uhakika kamili.

Transformer Maintenance and Technical Assurance Summary

Kwa upatikanaji wa transformer, bidhaa za core-hanging zinazopewa kwa umbali mrefu zinahitaji tafiti baada ya kuwasili kusaidia kupunguza vitu vilivyopungua na kusaidia utaratibu wa kutumia, na overhauls za kawaida yanapaswa kujihusisha na kubadilisha vipengele vilivyovunjika (kwa mfano, pumps) kulingana na mzunguko wa awali. Huduma za uzalishaji zinajumuisha kujenga windings kwa margin ya 20% ya overload (kwa mfano, 24000kVA kwa 20000kVA-rated LF furnace transformer) ili kuhakikisha ufundishaji bila shida kwa 120% load, na voltage za impedance ≤8% na heat load calculations kulingana na uwezo mkubwa. Hatua za kupunguza magonjwa na short-circuit zinaboa coil axial/radial stability kupitia high-voltage-grade wires, precise drying, hydraulic compaction, na multi-support structures. Ili kuhakikisha 20 years bila upatikanaji, muktadha unatumia Karamay naphthenic oil katika mikiba fulani na diaphragm conservators, anti-aging seals, na tahlil ya oil chromatographic mara kwa mara. Maendeleo muhimu yanajumuisha cores za silicon steel za Baowu/Nippon Steel kwenye ultra-low burr shearing, oxygen-free copper windings kwenye oil gaps ndogo, bodies za laminated wood, tanks za folded-plate na magnetic shielding, na mifumo imeshiriki. Mwenendo wa baadaye wa ore-heating furnaces yanajumuisha transformers wa single-phase na side-mounted water-cooling kwa models ≥15000kVA, na upatikanaji unahusisha non-intrusive monitoring kupitia tahlil ya mafuta ili kupunguza gharama na hatari za contamination.