本文選題：空氣預(yù)熱器 + 殼程　； 參考：《石油煉制與化工》2017年11期

【摘要】：針對中國石化某分公司空氣預(yù)熱器在實(shí)際操作過程中經(jīng)常產(chǎn)生振動、噪音的情況,利用Fluent1 4.0軟件對空氣預(yù)熱器的殼程進(jìn)行流場模擬和振動分析,分析產(chǎn)生振動的原因并提出解決措施。結(jié)果表明,空氣預(yù)熱器殼程管束的背面形成卡門渦流,底部空腔產(chǎn)生兩個較大的渦流,當(dāng)卡門渦流頻率與箱體固有頻率接近時,空氣預(yù)熱器會產(chǎn)生振動和噪音。結(jié)合現(xiàn)場布置及裝置實(shí)際情況,確定改造方案,即在搪瓷管段沿管束方向增加隔板、底部空腔添加導(dǎo)流板以及煙道系統(tǒng)內(nèi)部增加"井"字形隔墻。改造后,空氣預(yù)熱器未產(chǎn)生明顯的振動和噪音。
[Abstract]:In view of the fact that the air preheater in a branch of Sinopec often produces vibration and noise in practical operation, the flow field simulation and vibration analysis of the shell side of the air preheater are carried out by using Fluent1 4.0 software.The causes of vibration are analyzed and the solutions are put forward.The results show that there are two large eddy currents in the bottom cavity of the shell tube bundle of the air preheater. When the vortex frequency of the air preheater is close to the natural frequency of the box, the air preheater will produce vibration and noise.According to the field arrangement and the actual situation of the installation, the modification scheme is determined, that is, the partition plate is added along the pipe bundle direction in the enamel pipe section, the flow guide plate is added in the bottom cavity and the "well" zigzag partition wall is added inside the flue system.After modification, the air preheater does not produce obvious vibration and noise.
【作者單位】： 中國石化撫順石油化工研究院;中國石化中原油田分公司天然氣處理廠;
【基金】：國家科技重大專項(xiàng)(2016ZX05017-004)
【分類號】：TE96
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本文編號：1758812