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华电国际邹县发电厂2×1 000 MW超超临界机组在设计及设备选型时,进行了深入的分析和专题探讨,确定选用双列高加布置方案。即每台机组1,2,3号高加按并联配置2台50%容量的加热器,2列高加给水侧均采用2×50%大旁路系统。高加选用表面式、卧式、碳钢材质、U型管束换热器。双列高加比单列高加在运行的经济性和可靠性上更优越,采用双列高加,如某台高加发生事故,可使锅炉进水温度下降少、汽轮机热耗上升少。
Huaxia International Zouxian Power Plant 2 × 1 000 MW ultra-supercritical unit in the design and equipment selection, carried out in-depth analysis and special discussion to determine the selection of double-row high plus layout. That is to say, each unit 1, 2, and 3 is equipped with 2 sets of 50% capacity heaters in parallel and 2 × 50% large bypass systems in 2 columns plus the water supply side. High selection of surface, horizontal, carbon steel, U-tube heat exchanger. Double-row high-plus single-row high plus in the operation of the economy and reliability is superior, the use of double-column plus, such as a Taiwan Accident, can reduce the boiler inlet temperature, steam turbine heat rise.