waiwen 锅炉给水调节特点分析泵在600 mw机组Sliding-pressure操作原始研究的文章.pdfVIP

waiwen 锅炉给水调节特点分析泵在600 mw机组Sliding-pressure操作原始研究的文章.pdf

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waiwen 锅炉给水调节特点分析泵在600 mw机组Sliding-pressure操作原始研究的文章

Available online at Energy Procedia 17 ( 2012 ) 1153 – 1160 2012 International Conference on Future Electrical Power and Energy Systems Regulating Characteristics Analysis of Boiler Feed-water Pump when 600MW Unit Sliding-pressure Operating Hu Si-ke ,Gao Hui-fen,Jia Xue-jing School of Energy Resources and Mechanical Engineering Northeast Dianli University Jilin City, China Abstract According to the characteristics of utility-type generator set in variable load sliding-pressure operation, the paper comprehensively analyzes the features of feed-water system, in which variable-speed main feed-water and power frequency booster-pump connect first in series and then in parallel. It puts emphasis on fitting characteristics equation of feed-water pump under different operations, determining characteristics of feed-water pipeline under sliding-pressure operation, corresponding resistance coefficient, and finally deducing the equation of lift, efficiency and rotating speed when different loads and different sliding-pressures are adapted only by main feed-water pump variable speed adjusting. It takes one power plant 600MW supercritical unit for example to compare the energy consumption of different operation modes, and thus puts forward a more suitable operation mode under different loads, providing theoretical basis for the practical application of project. © 2012 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Hainan University. © 2011 Pub

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