| 1000MW超超临界机组回热系统设置的探讨 |
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| 引用本文： | 刘志真.1000MW超超临界机组回热系统设置的探讨[J].华东电力,2008,36(12). |
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| 作者姓名： | 刘志真 |
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| 作者单位： | 山东电力研究院,山东,济南,250002 |
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| 摘 要： | 为了在超超临界蒸汽参数下最大限度地获得热经济性的改善,利用等效热降法对某N1000-25/600/600机组回热系统的设置进行了计算分析.得出以下结论:给水系统采用两次升压;在低压缸第五级后增加一级抽汽口,给水加热的级数增加到 9级 ;将1号高加端差降至-3.38℃的同时装设外置式串联蒸汽冷却器,部分低加设置蒸汽冷却段等措施可使该机组安全性和经济性获得较大幅度的提高.
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| 关 键 词： | 给水系统两次升压 给水温度提高 低压缸抽汽口后移 九级回热 蒸汽冷却段/器的设置 |
Configuration of regenerative systems for 1000MW ultra-supercritical units |
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| LIU Zhi-zhen.Configuration of regenerative systems for 1000MW ultra-supercritical units[J].East China Electric Power,2008,36(12). |
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| Authors: | LIU Zhi-zhen |
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| Affiliation: | LIU Zhi-zhen(Sh,ong Electric Power Research Institute,Jinan 250002,China) |
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| Abstract: | To achieve the maximum thermal economy improvement for the ultra-supercritical unit under its steam parameters,the equivalent heat drop method was used to analyze the regenerative system configuration for the 600 MW N1000-25/600/600 unit.The results show that there are some measures that can greatly improve the security and economy of the unit,such as to boost the feed-water system twice,to add another steam extraction opening after the fifth stage of low pressure casing and give 9 stages of regeneration to... |
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| Keywords: | double-stage boosting for feed-water system feed-water temperature exaltation steam extraction opening of low pressure casing retroposition nine-stage regeneration steam cooler configuration |
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