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蒸汽發(fā)生器，簡稱蒸發(fā)器，是一種新型的熱交換設(shè)備，它的工作原理是利用反應(yīng)堆動力裝置將反應(yīng)堆中的冷卻劑對堆芯進(jìn)行推動，從而增加壓力，使堆芯升溫，然后將這種是的獲得的熱量傳給二回路工質(zhì)使其變?yōu)檎羝?，然后返回，不斷循環(huán)的過程。這種蒸汽發(fā)生器也被運(yùn)用到了鍋爐中，核反應(yīng)堆也是利用的這個原理。蒸汽發(fā)生器的種類主要分為有產(chǎn)生過熱蒸汽的直流式蒸汽發(fā)生器和帶汽水分離器、干燥器的飽和蒸汽發(fā)生器等。蒸汽發(fā)生器被運(yùn)用到了多個行業(yè)，蒸汽發(fā)生器的工作原理大致是：蒸汽發(fā)生器的工作過程大概分為首先是一回路流動，一回路流動就是利用150個pa左右的冷卻劑壓強(qiáng)使得水達(dá)到343℃的高溫。高溫冷卻劑從進(jìn)口管嘴進(jìn)入蒸發(fā)器冷卻劑室，并通過管板進(jìn)入傳熱管，在

傳熱管內(nèi)完成熱量傳遞之后再次進(jìn)入蒸發(fā)器冷卻劑室。

接著是二回路流動的過程，二回路的過程是利用冷卻70pa左右的大氣壓使水達(dá)到260℃的沸點(diǎn)，低于一回路冷卻劑溫度。一回路過后回流的冷卻水從蒸發(fā)器二回路進(jìn)口管嘴進(jìn)入二回路水室，透過傳熱管被一回路冷卻加熱沸騰，形成水蒸汽。汽化過程同時使得出口蒸汽的流速大大高于二回路進(jìn)口水的流速。高溫高壓的水蒸汽通過上方的蒸汽出口進(jìn)入主蒸汽管道，隨后送往蒸汽輪機(jī)并推動其轉(zhuǎn)動，以帶動發(fā)電機(jī)發(fā)電。這樣既能完成熱傳遞，又能完成促進(jìn)發(fā)動機(jī)進(jìn)行發(fā)電，一舉兩得。

傳熱管內(nèi)完成熱量傳遞之后再次進(jìn)入蒸發(fā)器冷卻劑室。

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