CAJ | 학술논문

直接空冷机组给水泵作为重要辅机之一，对电厂安全稳定运行起着重要作用。采用变热量等效焓降方法，对直接空冷机组电动给水泵与汽动给水泵两种拖动方式进行了分析；结合汽轮机变工况理论，定量计算了两种不同拖动方式下回热系统的参数及排汽压力；比较了两种拖动方式下的机组热经济性指标，以期为机组的优化运行和热力系统优化提供参考。以某600 MW直接空冷机组为例进行分析，结果表明：汽泵方案比电泵方案供电标准煤耗率低3.51 g/( kW·h)。
직접공랭궤조급수빙작위중요보궤지일，대전엄안전은정운행기착중요작용。채용변열량등효함강방법，대직접공랭궤조전동급수빙여기동급수빙량충타동방식진행료분석；결합기륜궤변공황이론，정량계산료량충불동타동방식하회열계통적삼수급배기압력；비교료량충타동방식하적궤조열경제성지표，이기위궤조적우화운행화열력계통우화제공삼고。이모600 MW직접공랭궤조위례진행분석，결과표명：기빙방안비전빙방안공전표준매모솔저3.51 g/( kW·h)。
As one of the important auxiliary equipment, feed water pump of direct air-cooling unit plays a very im-portant role in safe and stable operation of power plants. Analyzed electric feed water pump and steam feed water the two driving methods of pump in the direct air cooling unit, combined equivalent enthalpy drop of varied heat method with variable conditions of steam turbine theory, quantitative calculated the parameters of reheat system and exhaust steam pressure of two different feed water driving modes. Through compared the thermal economy indica-tors of two kinds of feed water pump driving mode, providing the reference for the optimal operation and thermal system optimization. Taking a 600 MW direct air-cooling unit as an example, results showed that standard coal con-sumption rate of power supply of steam pump is 3.51 g/ ( kW·h) less than the one of electric pump.