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    為什么要用到汽液兩相流疏水器

    release time:2022-03-12  viewed:2992次
     現代火力發(fā)電廠(chǎng)為提高循環(huán)熱效率都設置給水加熱器(或簡(jiǎn)稱(chēng)加熱器),加熱器在正常工作時(shí)要求殼側水位維持在一定范圍內,水位過(guò)高或過(guò)低不僅降低機組的熱經(jīng)濟性,而且會(huì )危及主機的安全運行。諸如水位過(guò)高造成汽輪機進(jìn)水而引起葉片斷裂、大軸彎曲、加熱器爆破等重大事故,在國內外多次發(fā)生;蛴捎谒贿^(guò)低,甚至無(wú)水位運行,造成大量蒸汽從加熱器內逸出,潛熱沒(méi)有充分利用,加熱器傳熱效果嚴重惡化,給水溫度下降,使機組煤耗增加。

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