摘要
某国产600 MW超临界机组汽轮机存在热耗偏高、低压第五级叶片易断裂、高中压内缸变形等问题,该汽轮机采用国外先进设计制造技术实施了通流改造,通过介绍改造的特点,从热耗、缸温、结构、末级叶片适应性等方面综合分析了改造效果,表明机组通过通流改造在经济性、可靠性获得了提高的同时,由于改造的局限性也存在部分不足,并提出了优化措施。
For higher heat consumption,the breakable low-pressure fifth-stage blade, high- and-medium pres-sure cylinder deformation of a China-made 600 MW supercritical steam turbine,throughflow retrofit is imple-mented based on imported design and manufacturing technology. By introducing retrofit characteristics, the pa-per analyzes the effect in respect to heat consumption,cylinder temperature,structure and adaptability of last blade stage. After the retrofit,economy and reliability of the steam turbine are improved; meanwhile, there are shortcomings due to the limitations of the retrofit. The paper also presents some optimization measures.
出处
《浙江电力》
2017年第4期45-48,72,共5页
Zhejiang Electric Power
关键词
超临界
通流改造
特点
效果分析
supercritical
throughflow retrofit
feature
effect analysis
