火力发电厂超大型高位收水冷却塔仪表与控制设计研究

摘要

在国家大力倡导节能减排的背景下,超大型高位收水冷却塔作为一种节能、降噪效果显著的新型自然通风冷却塔,该装置在国外核电站率先使用以及在国内某1 000 MW火力发电厂成功投产,未来必将受到更广泛的关注和应用.超大型高位收水冷却塔作为一种有别于常规自然冷却塔的新技术,其仪表设置、仪表选型以及控制逻辑都有独特之处.为发挥该技术的优势,从火力发电厂工程设计的角度出发,在超大型高位收水冷却塔仪表与控制方面进行了深入分析和探讨,并给出了工程设计方案.%Under the background of developing energy-saving and emission-reduction economy advocated by the country,as a new type of natural draft cooling tower (NDCT) featuring outstanding achievements in energy saving and noise reduction,the super high-level water collecting natural draft cooling tower is bound to receive much more attention and applications with its successful commitments in oversea nuclear power stations as well as a domestic 1 000-MW thermal power plant.Different from the conventional NDCT technology,it is unique in its instrument configuration,specification and control philosophy.To take advantage of this technology,from the viewpoint of fossil fuel power plant engineering design,this paper conducts an in-depth study on the instrumentation and control features of super high-level water collecting natural draft cooling towers,and then proposes the engineering design.