大型火电机组回转式空气预热器漏风分布  

Air Leakage Distribution in Rotary Air Heaters of Large Fossil Fired Power Units

作　　者：王洪跃[1] 毕小龙[1] 司风琪[1] 徐治皋[1] 

机构地区：[1]东南大学动力工程系,江苏南京210096

出　　处：《发电设备》2006年第3期152-156,共5页Power Equipment

摘　　要：针对某电厂300 MW机组回转式空气预热器,提出了漏风分布的综合模型,求解回转式空气预热器的径向、周向和轴向的漏风分布,得出轴向漏风和径向漏风可以相似化处理的结论。所以在加装径向密封装置时,也应该对轴向密封加以改造,这对回转式空气预热器的状态检修和运行维护具有指导意义。Keeping an eye on the rotary air heater of a certain 300 MW power unit, a comprehensive model for solving air leakage distributions in the radial, circumferential and axial direction is being proposed, with which a conclusion has been obtained that air leakage in the axial and in the radial direction may both be similarly simulated. Therefore whenever a radial sealing is added, an axial sealing should also be recnnstrueted. This may serve as a reference for operation, maintenance and overhaul of rotay air heaters.

关 键 词：能源与动力工程 锅炉 回转式空气预热器 漏风分布 模型 压差 

分 类 号：TK223[动力工程及工程热物理—动力机械及工程]