三塔合一间接空冷塔结构优化研究

发布时间：2018-01-11 20:36

本文关键词：三塔合一间接空冷塔结构优化研究　出处：《汽轮机技术》2017年04期 　论文类型：期刊论文

【摘要】：建立了600MW三塔合一间接空冷塔的数学模型,通过数值模拟探究结构参数对热力性能的影响规律,并以进塔风量和出塔水温为评价标准,获得了最优的结构参数。研究结果表明:随着出口直径或喉部直径的增大,热力性能先增强后减弱;无风工况下,随着喉部高度的增大,热力性能先增强后减弱,4m/s工况与之相反;随着塔高度的增大,热力性能持续增强;随着排烟高度或烟囱直径的改变,热力性能的变化并不大;随着脱硫塔直径的增大,热力性能继续减弱;当出口直径与零米直径的比值R1/R2=0.8~0.85,喉部直径与零米直径的比值R0/R2=0.6~0.65时,空冷塔热力性能最优。
[Abstract]:The mathematical model of 600 MW three-tower indirect air cooling tower was established. The influence of structural parameters on thermal performance was investigated by numerical simulation. The air volume and water temperature of the tower were taken as the evaluation criteria. The optimum structural parameters are obtained. The results show that the thermal performance increases first and then weakens with the increase of outlet diameter or throat diameter. Under the condition of no wind, with the increase of the height of the throat, the thermodynamic performance increases first and then weakens by 4 m / s. With the increase of tower height, the thermal performance continues to increase. With the change of the height of exhaust smoke or the diameter of chimney, the change of thermodynamic performance is not great. With the increase of the diameter of desulfurization tower, the thermal performance continues to weaken. When the ratio of outlet diameter to zero meter diameter is R 1 / R 2 0. 85 and the ratio of throat diameter to zero meter diameter is R 0 / R 2 0. 6 0. 65, the thermal performance of the air cooled tower is optimal.
【作者单位】：华北电力大学电站设备状态监测与控制教育部重点实验室;
【分类号】：TM621
【正文快照】： 0前言随着我国烟塔合一技术的成熟应用,在其基础上出现了三塔合一技术,其具有节水、节能和环保效益。在节能减排的形式下,将在火电行业得到快速发展。我国已经投运了多台三塔合一机组。莫浩浩等[1]比较了三塔合一间接空冷机组和常规湿冷机组的静态投资经济性、节水能力以及烟

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