600MW机组凝汽器最佳经济方案选择及特性曲线分析

Optimal Economic Scheme Selection and Characterisitc Curve Analysis for Condenser of 600MW Unit

在提高机组初参数条件受到一定限制的情况下,从设计、制造和运行环节如何保证凝汽器的安全运行来提高汽轮发电机组的经济性得到各方面的重视。在上述背景下,国内外竞相开展了凝汽器的最佳经济方案的研制工作。以某厂600MW汽轮机组为例,根据汽轮机的设计参数,选择不同的冷却倍率,冷却水流速以及流程数,从经济角度确定凝汽器的最佳运行方案,计算得出冷却倍率为70的双流程凝汽器为最佳设计方案。此外,还利用M atlab编程绘制了该凝汽器在不同冷却水量及不同冷却水进口温度下的特性曲线,并对几个典型工况曲线进行了分析,为凝汽器的运行,改造提供参考依据。

Due to the limit of the increase unit＇ s initial parameters, many countries attach importance to the increase of the unit＇ s benefit. So how to assure secure operation of condensers is the important thing, when people sign make or operation condenser. Since this thesis studies the optimal economical operation project under the different cooling rate and numbers of flow. Takes a certain 600MW steam turbine for example, it is seventy for cooling rate and two for flow for the optimal pro- ject. In addition, this thesis draws and analyses the characteristic curves under the different flux and temperature of cooling water with the software of Matlab. The conclusion which relies on the characteristic curves can offer great reference for the economical operation of steam turbine.