毕业论文设计《300MW汽轮机组冷端运行优化的软件实现》.doc

300MW汽轮机组冷端运行优化的软件实现 300MW汽轮机组冷端运行优的软件实现 PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT 2 PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT 1 300MW汽轮机组冷端运行优化的软件实现 摘要 凝汽器是电厂重要设备之一，它的安全经济运行对电厂的安全经济运行具有重要的作用。本文建立了凝汽器变工况计算模型，以及不同参数对凝汽器真空的影响模型，通过建立了凝汽器变工况性能计算模型和机组最佳真空的计算模型，得到了不同冷却水进口温度和不同循环水栗组合方式下的的最佳运行真空，以300MW机组为例，进行了不同给水入口温度下和不同循环水泵运行组合方式下的机组耗功计算，得到了机组在全负荷范围内的最佳运行方式，进而达到节能降耗的目的。对于指导现场运行具有重要的现实意义。 关键词：300MW；凝汽器；最佳真空；冷端 OPERATION OF THE COLD END OPTIMIZATION OF 300MW STEAM TURBINE UNIT ABSTRACT The condenser is one of the important equipments in power plant, plays an important role in safe and economic operation of the safe and economic operation of power plant. This paper established the condenser off-design condition calculation model, and the influence of different parameters on the vacuum of condenser model, calculation model of off-design performance through the establishment of a condenser calculation model and the optimal vacuum, got the optimal operation of the vacuum of the different inlet temperature of cooling water and circulating water chestnut combination way, to the 300MW unit as an example, the different water entrance temperature and different combinations of circulating water pump running under unit power calculation, obtained the best mode of operation in the entire load range of the unit, so as to achieve the purpose of energy saving. Have important realistic meaning for guiding the operation. Key words:300MW; Condenser; Best Vacuum; cold side PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT 28 PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT 27 目 录 TOC \o 1-3 \h \u HYPERLINK \l _Toc28926 第一章 绪论 PAGEREF _Toc28926 1 HYPERLINK \l _Toc11954 1.1 课题的背景和意义 PAGEREF _Toc11954 1 HYPERLINK \l _Toc29118 1.2 本课题的研究现状及存在的问题 PAGEREF _Toc29118 2 HYPERLINK \l _Toc20236 1.2.1 本课题的研究现状 PAGEREF _Toc20236 2 HYPERLINK \l _Toc13052 1.2.2目前存在的问题 PAGEREF _Toc13052 3 HYPERLINK \l _Toc1552 1.3 本论文的主要工