摘要
直接空冷火电机组的运行状况受环境自然风的影响很大,不利的风速、风向不仅会影响到机组运行的经济性,严重时还会造成掉闸停机事故。在总结火力发电厂空冷系统特点的基础上,依据热风再循环理论,对现场环境及所采集数据进行了系统分析,重点研究了热风回流产生的原因及横向风对直接空冷机组的影响;环境风场对直接空冷机组空冷风机吸入风量和入口温度的影响;当环境风场作用在直接空冷散热器时,对空冷散热器换热性能的影响,并提出相应防治对策。采取措施的直接空冷火电机组运行状况良好,抗风能力能力明显增强,证明了该分析的合理性和防治对策的有效性。
The operation of direct air cooling unit is influenced greatly by environmental wind. Adverse velocity and direction of wind will cause switching off or breakdown of the unit as well as affect economical operation of the unit. This paper, on the basis of concluding the characteristics of the air cooling condenser,according to the theory of hot air recycling analysis systematically the data collected on the scene the casuse of hot air backflow, the influence of horizontal wind on direct air cooling unit, environmental wind＇s influence on amount of air inspiration and inlet temperature,and the influence on air colling rediator. The paper proposes some corresponding countermeasures. The units which have adopted these countermeasures have boosted their capacity of dealing with adverse winds and operated well, which proves the effectiveness of the measures.
出处
《电力学报》
2008年第1期34-37,共4页
Journal of Electric Power
基金
企业委托科技攻关合作项目
关键词
直接空冷系统
空冷岛
环境自然风
热风再循环
direct air-cooling condenser
cooling island
environmental natural wind
hot reflux
