1000MW火电机组锅炉给水泵汽轮机两种通流设计分析

摘要

Steam turbines are broadly classified into two types of impulse and reaction according to the working principle. This article introduces different products of half capacity boiler water - feed pump turbines based on both design concepts of impulse type and reaction type which applied to 1000MW grade thermal power units. It analyses and compares their flow design, main performance, configure feature as well as the situation of their applications at present. It discusses and analyses the technical feature of two different ways on their efficiency, control strategy, blade strength and safety and other aspects.%汽轮机按工作原理区分有冲动式和反动式两种型式,介绍应用于1 000MW等级火电机组配套的半容量锅炉给水泵汽轮机基于冲动式和反动式两种设计理念衍生出的不同产品,并以实际工程项目为例,分析对比其通流设计、主要性能、配置特点及目前的应用情况,对两种方案热效率、控制策略、叶片强度和安全等方面的技术特点进行讨论和分析.