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IC660BBA105
IC660BBA105 價(jià)格:1111  元(人民幣) 產(chǎn)地:美國(guó)
最少起訂量:1個(gè) 發(fā)貨地:福建廈門(mén)
上架時(shí)間:2018-11-13 09:53:23 瀏覽量:191
廈門(mén)光沃自動(dòng)化設(shè)備有限公司  
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詳細(xì)介紹

IC660BBA105

IC660BBA105

IC660BBA105

IC660BBA105

   主井皮帶原采用2臺(tái)高壓電機(jī)拖動(dòng),整套系統(tǒng)工作是由2臺(tái)315kW/6kV高壓異步電動(dòng)機(jī)并聯(lián)拖動(dòng)。
     主井皮帶是柳灣煤礦的中樞,一旦皮帶機(jī)不能正常工作,將造成全礦停產(chǎn),不但影響生產(chǎn),造成巨大經(jīng)濟(jì)損失,而且會(huì)引起嚴(yán)重的社會(huì)影響。
     原有系統(tǒng)采用交流繞線(xiàn)式電機(jī)串電阻調(diào)速系統(tǒng)。該調(diào)速系統(tǒng)屬于有級(jí)調(diào)速,調(diào)速的平滑性差;低速時(shí)機(jī)械特性較軟,靜差率較大;電阻上消耗的轉(zhuǎn)差功率大,節(jié)能較差;起動(dòng)過(guò)程和調(diào)速換擋過(guò)程中電流沖擊大;中高速運(yùn)行震動(dòng)大,安全性較差。該調(diào)速系統(tǒng)在解決電機(jī)間同步,以及出力不均的問(wèn)題時(shí)能力明顯不足。機(jī)械磨損和老化問(wèn)題日趨嚴(yán)重,性能逐年降低,故障率增加,設(shè)備維修難度大;整個(gè)系統(tǒng)效率低,調(diào)速范圍有限,穩(wěn)定性差。

3. 變頻調(diào)速新系統(tǒng)裝置概述

       主井皮帶采用3臺(tái)高壓電機(jī)拖動(dòng),整套系統(tǒng)工作是由3臺(tái)710kW/6kV高壓異步電動(dòng)機(jī)并聯(lián)拖動(dòng)。其中兩臺(tái)電機(jī)同軸拖動(dòng)同一滾筒,另一電機(jī)單獨(dú)驅(qū)動(dòng)另一滾筒,皮帶運(yùn)輸機(jī)傳動(dòng)系統(tǒng)如圖1所示。

       該系統(tǒng)不僅要求3臺(tái)速度同步,而且3臺(tái)負(fù)荷分配要均衡一致,如圖2所示。

       綜合以上因素,甲方考慮采用高壓變頻調(diào)速裝置驅(qū)動(dòng)皮帶系統(tǒng),但是,由于目前國(guó)內(nèi)外高壓變頻器的應(yīng)用領(lǐng)域主要在風(fēng)機(jī)水泵等變轉(zhuǎn)矩應(yīng)用方面,很少有恒轉(zhuǎn)矩重載設(shè)備驅(qū)動(dòng)的實(shí)例,而重載多單元同步控制的成功應(yīng)用更是幾乎沒(méi)有,新柳煤礦非常慎重,經(jīng)過(guò)綜合考查了國(guó)內(nèi)外多家變頻廠商,同各方面專(zhuān)家進(jìn)行了多次的研討,最終確認(rèn)了日本明電舍的VT710高壓變頻器驅(qū)動(dòng)裝置的系統(tǒng)方案。圖2為皮帶運(yùn)輸機(jī)高壓變頻器驅(qū)動(dòng)系統(tǒng)圖。


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