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產品簡介
DSC1.7-50
DSC1.7-50
產品價格:¥888
上架日期:2016-05-10 16:09:36
產地:美國
發(fā)貨地:廈門
供應數量:不限
最少起訂:1個
瀏覽量:46
資料下載:暫無資料下載
其他下載:暫無相關下載
詳細說明

    DSC1.7-50核級DCS的功能是對核反應堆進行保護和控制,在核電站運行過程中,它實時地監(jiān)控各個參數,自動判斷運行狀態(tài),一旦反應堆出現異常工況,必須要在最短的時間內實現安全停堆,并控制余熱的排出,避免對外部環(huán)境造成影響。
      問:核級DCS研發(fā)最大的技術難點在哪?
      江國進:DSC1.7-50核級DCS一方面要保證反應堆安全停堆,需要停堆的時候一定不能出現拒動;另一方面又要保證反應堆的正常運行,防止誤動。拒動和誤動兩個關鍵因素必須要取得平衡,才能使核電站安全性和經濟性得到保障,這是核電站核級DCS研發(fā)的難點所在,因為這就意味著更為復雜的設計工作。
      DSC1.7-50核級DCS設計上要采用多重冗余架構和多樣性技術,多重冗余主要是采取多個同樣設備同時獨立工作,以避免單一設備失效引發(fā)系統(tǒng)的不可用,比如目前電站常用的四組同樣的設備同時獨立工作,當其中的兩組設備同時發(fā)出動作信號時才進行實際的停堆和專設控制動作;多樣性技術是指采用不同的技術來實現同一個功能,以避免共因故障引發(fā)的多個冗余的設備出現故障,比如,我們會同時監(jiān)控反應堆壓力和溫度等多種工藝參數,來對核反應堆的狀態(tài)進行監(jiān)視。

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