共查询到18条相似文献,搜索用时 218 毫秒
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超临界600MW汽轮机运行方式的优化研究 总被引:1,自引:0,他引:1
阐述了汽轮机变负荷运行的优化原理,介绍了某电厂600MW超临界汽轮机组变负荷运行优化试验的情况,并按照机组高调阀的实际流量特性,通过不同典型负荷下(包括540MW、480MW、420MW、360MW、330MW和300MW共6个负荷)的热效率对比试验,得到了机组优化后的变负荷运行方式,考虑了机组排汽压力的修正,给出了相应运行曲线的拟合函数.结果表明:优化后的运行方式在机组低负荷运行时,汽轮机热耗率明显降低,优化后的运行方式有效地提高了机组变负荷运行时的经济性. 相似文献
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Coal-fired generation units in China often operate under off-design loads. The off-design performance has important influence on operation energy consumption of generation units. An all-condition model is of critical importance for studying the off-design performance. In this paper, an all-condition simulation model of the steam turbine system for a 600 MW generation unit is built. Based on the actual system composition, the steam turbine system is divided into several sub equipment. A sub model is established for each device. In the turbine model, a parameter M is defined as the intermediate variable to calculate the extraction pressure of turbine. The operating data from a 600 MW generation unit are used to verify the all-condition model. The heater fouling conditions are also calculated. The result shows that the model successfully predicts the operation parameters under different loads and forecasts the thermal performance of typical equipment failure. 相似文献
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600MW超超临界汽轮机高压主汽调节联合阀内部流场的数值模拟分析 总被引:1,自引:0,他引:1
采用非结构化四面体网格,对某600MW超超临界汽轮机组高压主汽调节联合阀的额定工况进行了数值模拟.针对3种不同结构的模型分别进行了计算,分析研究了阀门内部流场的流动特性,以及在主汽阀内加置挡板和滤网对内部流场和阀门损失的影响. 相似文献
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根据某电厂超临界600MW汽轮机实测试验数据,对在性能试验中容易被忽略的几点影响高中压效率的因素进行分析,得到各种影响因素对高中压缸效率的影响,计算得到的真实高中压缸效率对制造厂设计汽轮机和电厂运行具有重要指导意义. 相似文献