共查询到20条相似文献,搜索用时 78 毫秒
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上海外高桥二期900MW超临界机组是我国单机容量最大的火电机组。本文介绍了900MW机组锅炉的主要调试项目,包括冷态通风试验、安全阀校验和蒸汽严密性试验、蒸汽吹管和机组整套启动时的锅炉调试。对调试中发现的问题进行了分析并给出了解决方案,为该锅炉以后的安全经济运行及设备优化提供了参考。 相似文献
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简述了越南锦普燃煤火力发电厂一期建设工程340 MW两炉一机制火电机组主、再热蒸汽系统及旁路系统的特点,详细介绍了2台锅炉并汽和解汽过程.该机组目前已投入商业运行,在调试期间及在满、变负荷运行过程中安全稳定,未出现任何问题,说明340 MW两炉一机制火电机组在设计、安装、调试、运行等方面是成功的,其设计方案是完全可行的... 相似文献
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锅炉吹管是新建火电机组调试过程中的一个重要环节,然而目前还缺乏大容量双切圆锅炉吹管工艺的详细描述及分析。本文结合现场调试过程,对1 000 MW机组双切圆锅炉稳压吹管、降压吹管相结合的过热器再热器一段吹管工艺,尤其是每个阶段主要控制参数的 调整及其对介质温度和管壁温度的影响进行了全程描述和深入分析。吹管过程表明:此次1 000 MW机组双切圆锅炉吹管工艺设计合理,各参数控制优良,靶板检验合格,满足吹管标准,可为同类型机组锅炉吹管提供参考。 相似文献
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日本建造了目前世界上最大容量的燃油/天然气超临界压力变压运行火电机组。本文概述了日本1000MW 火电机组的发展,重点介绍了广野火电站3号机组锅炉的设计特点、运行情况和东扇岛火电站2号机组锅炉的设计。 相似文献
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从600MW火电机组"W"型超临界锅炉燃烧器运行的安全性、经济性、可靠性角度出发,对600MW锅炉燃烧器的设计、安装、调试、运行方面存在的问题及改进方面做了探讨分析,得到了实用性较强的解决方案。 相似文献
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600MW火电机组侧AGC功能应用研究 总被引:1,自引:0,他引:1
结合盘南发电厂4台600MW机组的调试工作和工程实践中的经验,分析和研究600MW级大型火电厂机组侧AGC功能和锅炉燃烧控制中的一些关键技术、难点以及工程中相应的解决方法;通过对600MW火电机组侧AGC和锅炉燃烧控制特点的深入研究,针对盘南电厂不同型号机组具体情况对机组AGC功能进行了改进、完善和优化。通过自动发电控制(AGC)功能的调节性能和控制响应能力测试试验,证明4台机组经过优化,AGC的调节性能满足要求。 相似文献
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《电气》2011,(2):14-18
With the incessant development of power market reform,the existing cross-subsidy in electricity tariffs has become a critical problem in China’s power industry development.On the basis of the theories of cross-subsidy and electricity universal service,the authors take foreign countries’ experience as reference to design several solutions to cross-subsidies in electricity tariffs in different phases of China’s power industry development.Furthermore,the application and implementation of these solutions are analyzed in this paper. 相似文献
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The author suggests that the confidence which many biologists have in problem-solving methods is unwarranted and that there are very important limitations in almost all current methods for solving biological problems. The standard problem solving approach that computer scientists use is outlined. An example of an error in an evolutionary tree problem-the case of the African Eve-is discussed 相似文献
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无色透明材料形成的单层薄膜,其颜色由干涉色决定。以白光照射其表面,随薄膜厚度的增加,将出现一系列色彩,这是由薄膜干涉所致。我们可以根据薄膜颜色,估计薄膜厚度。显然,当厚度增大到后界面的影响可以忽略不计的程度(相当于只有一个界面的半无限大情形,本文简称“厚膜”),则“厚膜”颜色恢复为无色透明。半透明材料在基底上形成的薄膜系统,以白光照射所呈现的颜色,由于基底及吸收的影响,则不能简单地以薄膜干涉来分析。对于半透明薄膜系统,首先测量它的光强反射率谱和透射率谱,运用传递矩阵[1]方法计算出薄膜的介质光学常数,再以光学常数计算单层薄膜与“厚膜”的光强透射率谱与反射率谱及它们的色坐标。以菲涅耳公式计算出的反射率谱为半无限大介质反射率谱,这时的色坐标可视为“厚膜”的色坐标。 相似文献
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A survey is provided of Japanese research on ceramic materials for substrates, microwave dielectric ceramics, piezoelectric ceramics, semiconducting ceramics, and superconducting ceramics. Novel processing technologies are described, covering the use of amorphous materials, superfine powders, lamination, multilayer thin films, porous ceramics, and superlattices 相似文献
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Recent progress in inverse problems in electrocardiology 总被引:5,自引:0,他引:5
The considerable progress achieved in the inverse problem of electrocardiography over the last decade has provided grounds for optimism about the possibility of approaching significant clinically relevant applications in the next decade. However, there are a number of basic questions that still remain. In addressing these questions, the authors feel it is important to seek solutions that emphasize physiological rather than mathematical significance. This approach leads to twin requirements for useful inverse solutions: accuracy, defined in a physiologically meaningful (and not just averaged and mathematical) sense, and reliability, not only to measurement noise but also to geometric modeling errors and other uncertainties that are inescapable in practical application. Studies using analytically tractable models may still be relevant, but it seems more important to find solutions to practical inverse problems, which will move the field toward wider acceptance and credibility 相似文献
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