汽轮发电机组高压加热器投运率提高措施探讨

On the measures of improving operational percentage of the high pressure heater of turbo-generator unit

高压加热器是汽轮发电机组非常重要的辅助设备之一,若高压加热器停运,将有可能导致机组发电煤耗量提高3%～5%,汽轮发电机组发电效率将降低5%～15%,发电厂用电率将随之提高0.5%左右,还有可能造成锅炉的水冷壁管因为超温而损坏。因此,汽轮发电机组高压加热器稳定、安全的运行将直接影响到整个发电厂的经济效率和发电效率。文章主要对汽轮发电机组高压加热器投运率低的主要原因和提高汽轮发电机组高压加热器投运率的途径进行了分析。

The high pressure heater is a very important auxiliary equipment of turbo-generator unit.If the high pressure heater stop,the power generation coal consumption quantity would be improved by 3%～5%,the power generation efficiency would be reduced by 5%~15%,electricity rate will be increased 0.5% or so,and the water wall tube of the boiler might be damaged because of overtemperature.Therefore,the safe and stable operation of the high pressure heater of turbo-generator unit will directly affect the economic efficiency and power generation efficiency of the whole power plant.This paper mainly analyzes the main causes of it＇s low operational percentage and the ways of improving it＇s operational percentage.