管家婆四肖期准一

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重慶中頻熔煉爐的核心原理
- 2019-04-18-

?      重慶中頻熔煉爐的工作原理是由國家電網提供的三相交流電源通過三相全控整流橋(裝置采用晶閘管)形成電壓可調的脈動直流電流。直流電流被反應器LD過濾后送至單相逆變橋(器件采用晶閘管)。逆變橋的輸出比電源頻率高幾十到幾百倍。負載采用感應線圈(含加熱爐爐料)和中頻電力電容器組成的LC串并聯振蕩電路,對負載適應性強,運行可靠。通過調整整流觸發脈沖的控制角度,可改變其額定功率,達到功率調節的目的;其輸出頻率為負載下LC并聯振蕩器的諧振頻率。由于倒電橋的觸發脈沖控制信號取自負載回路,當負載回路的LC參數變化時,倒電橋的輸出頻率也會相應變化,起到自動調頻作用。

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中頻感應熔煉爐