摘要
介绍了现有汽轮机采用曲径(疏齿)式汽封的特点及存在的问题,叙述了可调式(布莱登)汽封工作原理及应用情况。以实测结果为例,评价了汽封性能的优劣,不仅影响机组的经济性,而且影响机组的可靠性,并对华能大连电厂、华能沁北电厂、抚顺热电厂、大连泰山热电厂7台机组改造前、后得到的不同结果,定性分析其原因,并给出结论性评价。
This paper describes the characteristics and problems of Labyrinth （sparse teeth） steam seal used in the existing steam tur- bine, and introduces the working principle and application of adjustable steam seal （Bryden）. Then it evaluates the impact of the steam seal on the turbine economy and practicality by using the measured result. According to the results of the different capacity units, it gives qualitative analysis and the conclusive assessment.
出处
《东北电力技术》
2012年第12期19-21,共3页
Northeast Electric Power Technology
关键词
汽轮机
热耗率
可调式汽封
Turbine
Heat rate
Adjustable steam seal
