《電子技術(shù)應(yīng)用》
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科陸高壓變頻器在貴州九龍水泥立窯羅茨風(fēng)機(jī)上的應(yīng)用
摘要: 本文結(jié)合水泥廠立窯羅茨風(fēng)機(jī)的生產(chǎn)工藝,綜述了高壓變頻器的性能特點(diǎn)及系統(tǒng)原理,同時(shí)詳細(xì)說(shuō)明了整體改造方案,介紹了變頻器的節(jié)電效果。
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摘  要】 本文結(jié)合水泥廠立窯羅茨風(fēng)機(jī)的生產(chǎn)工藝,綜述了高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器的性能特點(diǎn)及系統(tǒng)原理,同時(shí)詳細(xì)說(shuō)明了整體改造方案,介紹了變頻器的節(jié)電效果。

關(guān)鍵詞】 高壓變頻器 節(jié)能降耗  水泥廠  立窯  羅茨風(fēng)機(jī)。

一﹑立窯羅茨風(fēng)機(jī)高壓變頻改造的必要性 

      貴州九龍水泥立窯羅茨風(fēng)機(jī)為繞線式異步電動(dòng)機(jī),原有的運(yùn)行方式是電機(jī)工頻全速運(yùn)行,依靠出口放風(fēng)閥來(lái)調(diào)節(jié)所需風(fēng)量大小,由于該公司電網(wǎng)容量有限,電機(jī)不允許全壓?jiǎn)?dòng),電機(jī)采用轉(zhuǎn)子串聯(lián)電阻的方式啟動(dòng),啟動(dòng)結(jié)束后再自動(dòng)短接啟動(dòng)電阻,電機(jī)全速運(yùn)行,但投運(yùn)后發(fā)現(xiàn)通過(guò)出口放風(fēng)閥門(mén)調(diào)節(jié)方式存在如下弊端:

1﹑出口放風(fēng)閥調(diào)節(jié)反應(yīng)滯后,調(diào)節(jié)速度慢,調(diào)節(jié)精度低,往往對(duì)現(xiàn)場(chǎng)所需風(fēng)量控制不到位,影響現(xiàn)場(chǎng)的生產(chǎn)工藝要求。

2﹑出口放風(fēng)閥調(diào)節(jié)不科學(xué),不經(jīng)濟(jì),浪費(fèi)資源,采用放風(fēng)閥調(diào)節(jié)雖然結(jié)構(gòu)簡(jiǎn)單,投資少,但在節(jié)能意識(shí)日益加強(qiáng)的今天顯然已經(jīng)不合適,水泥廠在建廠初期,出于后續(xù)可能擴(kuò)建及運(yùn)行安全的角度,電機(jī)及風(fēng)機(jī)的裕量選用比較大,嚴(yán)重存在著大馬拉小車(chē)的現(xiàn)象,事實(shí)上,電機(jī)額定電流為40A,而電機(jī)實(shí)際運(yùn)行電流平均僅為28A左右,由于采用出口放風(fēng)閥調(diào)節(jié),人為的放掉了風(fēng)道的風(fēng)壓和風(fēng)量,大量的能源白白浪費(fèi)被放風(fēng)閥放出,在能源日益緊缺的今天,顯然已經(jīng)落伍,節(jié)能改造勢(shì)在必行。

3﹑電機(jī)工頻全速運(yùn)行時(shí),電機(jī)軸承等機(jī)械部位磨損嚴(yán)重,另外,由于是轉(zhuǎn)子繞線式異步電機(jī),轉(zhuǎn)子高速運(yùn)轉(zhuǎn)時(shí),其滑環(huán)上的碳刷磨損也相當(dāng)嚴(yán)重,更換周期短,設(shè)備維護(hù)量大。 

4﹑啟動(dòng)過(guò)程復(fù)雜,轉(zhuǎn)子串聯(lián)電阻啟動(dòng)方式附帶了很多二次回路,維護(hù)量大,使用效率卻不高,然而卻不可缺少,啟動(dòng)方式屬于落后工藝。

綜上所述,要先想徹底的改變現(xiàn)有工藝,就必須從源頭改進(jìn),即通過(guò)改變電機(jī)轉(zhuǎn)速來(lái)調(diào)節(jié)風(fēng)機(jī)轉(zhuǎn)速,從而達(dá)到調(diào)節(jié)風(fēng)量的目的,以此來(lái)滿(mǎn)足現(xiàn)場(chǎng)工藝要求。

二﹑調(diào)速方式的選擇

      目前,國(guó)內(nèi)大功率高壓異步電動(dòng)機(jī)主要調(diào)速方式有以下幾種:串級(jí)調(diào)速﹑內(nèi)反饋串級(jí)調(diào)速﹑液力耦合器調(diào)速﹑變頻調(diào)速等。

1串級(jí)調(diào)速:優(yōu)點(diǎn)是可以回收轉(zhuǎn)差功率,所以調(diào)速效率比較高,但存在的問(wèn)題也很多,它不適宜現(xiàn)有的轉(zhuǎn)子繞線式異步電動(dòng)機(jī),啟動(dòng)過(guò)程復(fù)雜,啟動(dòng)電流大,調(diào)速范圍有限,響應(yīng)慢,功率因數(shù)和效率低,很難實(shí)現(xiàn)同PLC及DCS等控制系統(tǒng)的配合,諧波污染大,對(duì)電網(wǎng)有較大干擾。

2內(nèi)反饋調(diào)速:內(nèi)反饋調(diào)速是在串級(jí)調(diào)速基礎(chǔ)上發(fā)展起來(lái)的,優(yōu)點(diǎn)是具有串級(jí)調(diào)速的全部?jī)?yōu)點(diǎn),體積小,缺點(diǎn)是:需更換專(zhuān)用電機(jī),滑環(huán)處理不當(dāng)容易出現(xiàn)事故,雖然采用頻敏變阻器啟動(dòng),可啟動(dòng)電流仍很大,對(duì)電機(jī)和電網(wǎng)沖擊很大,調(diào)速范圍有限,輸入功率因數(shù)和效率低,電機(jī)側(cè)由于可控硅的逆變衍生出大量的高次諧波,對(duì)電機(jī)的絕緣造成老化,容易引起電機(jī)的轉(zhuǎn)矩脈動(dòng),附加發(fā)熱和噪聲污染,電纜需加粗使用,電機(jī)喘振現(xiàn)象無(wú)法消除。

3液力耦合器調(diào)速:調(diào)速范圍有限,高速丟失轉(zhuǎn)差約3%-5%,低速轉(zhuǎn)差功率損失更大(1-調(diào)速比),最高可達(dá)額定傳送功率的15%,因效率與轉(zhuǎn)速成正比,低速時(shí)效率極低,精度低,無(wú)法切換運(yùn)行,維護(hù)復(fù)雜,費(fèi)用大。

4高壓變頻器調(diào)速:由于運(yùn)用了先進(jìn)的電力電子技術(shù),計(jì)算機(jī)控制技術(shù),現(xiàn)代通信技術(shù)和高壓電氣,電機(jī)拖動(dòng)等綜合性領(lǐng)域的科學(xué)技術(shù),因此具有其它調(diào)速方式無(wú)法比擬的優(yōu)點(diǎn)。

科陸CL2700系列高壓變頻調(diào)速系統(tǒng)技術(shù)優(yōu)勢(shì)

1高效率、無(wú)污染、高功率因數(shù)

       CL2700系列高壓變頻調(diào)速系統(tǒng)采用的是功率單元串聯(lián)的高-高方案,采用了多繞組高壓移相變壓器,二次側(cè)繞組中流過(guò)的電流在變壓器一次側(cè)疊加時(shí),形成非常逼近正弦波的電流波形。經(jīng)過(guò)實(shí)際測(cè)試,50Hz運(yùn)行時(shí),網(wǎng)側(cè)電流諧波<2%,電機(jī)側(cè)輸出電壓諧波<1.5%(即使在40Hz時(shí),仍然<2%),成套裝置的效率>97%,功率因數(shù)>0.96。完全滿(mǎn)足了IEEE 519-1992對(duì)電壓、電流諧波含量的要求。

      另外,通過(guò)采用自主開(kāi)發(fā)的專(zhuān)用PWM控制方法,比同類(lèi)的其它方法還可進(jìn)一步降低輸出電壓諧波1~2%

2先進(jìn)的故障單元旁路運(yùn)行(專(zhuān)業(yè)核心技術(shù))

      為了提高系統(tǒng)的可靠性,整個(gè)變頻調(diào)速系統(tǒng)中考慮了一定的輸出電壓余量,并在各功率單元中增加了旁路電路。當(dāng)某個(gè)功率單元出現(xiàn)故障時(shí),可以自動(dòng)監(jiān)測(cè)故障并啟動(dòng)旁路電路,使得該單元不再投入運(yùn)行,同時(shí)程序會(huì)自動(dòng)進(jìn)行運(yùn)算,調(diào)整算法,使得輸出的三相線電壓仍然完全對(duì)稱(chēng),電機(jī)的運(yùn)行不受任何影響。這種控制方法處于國(guó)際先進(jìn),國(guó)內(nèi)領(lǐng)先的水平,它將大大提高系統(tǒng)的可靠性和運(yùn)行的穩(wěn)定性。

3高性能的控制技術(shù)

      CL2700系列高壓變頻調(diào)速系統(tǒng)率先實(shí)現(xiàn)了簡(jiǎn)易矢量控制技術(shù),可以實(shí)現(xiàn)恒轉(zhuǎn)矩快速動(dòng)態(tài)響應(yīng),并且具有加、減速自適應(yīng)功能,即可根據(jù)運(yùn)行工況參數(shù)的實(shí)際變化,自動(dòng)調(diào)整加、減速時(shí)間,在不超過(guò)最大允許電流的情況下,快速達(dá)到設(shè)定轉(zhuǎn)速;同時(shí),系統(tǒng)可以自動(dòng)識(shí)別電機(jī)轉(zhuǎn)速,用戶(hù)可以不考慮電機(jī)目前的運(yùn)行狀態(tài),電機(jī)不需要停止運(yùn)行就可直接實(shí)現(xiàn)電動(dòng)機(jī)的啟動(dòng)、加速、減速或停車(chē)操作。

 

4高可靠性

      控制電源可實(shí)現(xiàn)外部220V供電和高壓電源輔助供電雙路電源自動(dòng)切換,同時(shí)配置有UPS,即使兩路電源都出現(xiàn)故障時(shí),控制系統(tǒng)仍然可以工作足夠長(zhǎng)的時(shí)間,控制整個(gè)系統(tǒng)安全停機(jī),發(fā)出報(bào)警,并記錄故障時(shí)的所有狀態(tài)參數(shù)。

采用高速光纖通信,可有效避免電磁干擾。

當(dāng)單元故障數(shù)目超過(guò)設(shè)定值時(shí),系統(tǒng)可自動(dòng)切換到工頻運(yùn)行。

整流變壓器有完善的溫度監(jiān)控功能。

      獨(dú)特設(shè)計(jì)的功率柜風(fēng)道,主要發(fā)熱元器件都靠近或處于風(fēng)道中,散熱效果好,保證了系統(tǒng)的過(guò)載能力。

      抗電網(wǎng)電壓波動(dòng)能力強(qiáng),當(dāng)電網(wǎng)電壓在-15%~+15%范圍內(nèi)波動(dòng)時(shí),系統(tǒng)可以正常工作;對(duì)于功率單元,在電壓-25%~+20%范圍內(nèi)變化時(shí),都可正常工作。

5其它特點(diǎn)

故障自診斷能力強(qiáng),監(jiān)測(cè)系統(tǒng)中所有主要參數(shù)及接口信號(hào)。

10.4英寸液晶觸摸屏人機(jī)界面,操作簡(jiǎn)單,友好,顯示內(nèi)容豐富。

接口豐富,可與多種自動(dòng)化設(shè)備和系統(tǒng)接口,滿(mǎn)足各種現(xiàn)場(chǎng)不同需要,特殊接口可以定制。

具有本地和遠(yuǎn)程操作功能,,可以通過(guò)DCS遠(yuǎn)程實(shí)現(xiàn)監(jiān)控功能;

維修簡(jiǎn)單,所有單元可以互換,備件少。

四﹑改造項(xiàng)目具體實(shí)施方案及過(guò)程

      根據(jù)現(xiàn)場(chǎng)的實(shí)際情況,旁路柜采用一拖一手動(dòng)方案,此結(jié)構(gòu)是手動(dòng)旁路的典型方案,是由3個(gè)高壓隔離刀閘QS1QS2QS3組成,其中QF1為客戶(hù)提供高壓隔離總開(kāi)關(guān),

      其工作原理是:工頻運(yùn)行時(shí), QS2閉合,斷開(kāi)QS1和QS3,變頻運(yùn)行時(shí), QS1和QS3閉合,QS2斷開(kāi), QS2和QS3是雙聯(lián)高壓隔離刀閘不會(huì)同時(shí)閉合,在機(jī)械上實(shí)現(xiàn)了機(jī)械互鎖

      優(yōu)點(diǎn):高壓變頻器故障時(shí),有明顯斷電點(diǎn),能夠確保人身安全,同時(shí)可以手動(dòng)使負(fù)載投入工頻電網(wǎng)運(yùn)行

      缺點(diǎn):高壓變頻器故障時(shí),不能自動(dòng)由變頻切換到工頻

      現(xiàn)場(chǎng)原有的電阻啟動(dòng)裝置繼續(xù)保留,當(dāng)高壓變頻器出現(xiàn)故障時(shí),直接把變頻器高壓輸入電纜切換到電阻啟動(dòng)裝置上即可,操作簡(jiǎn)單,快捷

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