顾扬彪,何志瞧
GU Yangbiao,HE Zhiqiao

• 1:浙江浙能兰溪发电有限责任公司

摘要(Abstract)：

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 pressure cylinder deformation of a China-made 600 MW supercritical steam turbine, throughflow retrofit is implemented based on imported design and manufacturing technology. By introducing retrofit characteristics, the paper 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.

关键词(KeyWords)： 超临界;通流改造;特点;效果分析
supercritical;throughflow retrofit;feature;effect analysis

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 顾扬彪,何志瞧
GU Yangbiao,HE Zhiqiao

DOI: 10.19585/j.zjdl.201704011

参考文献(References)：

• [1]吴桐,李昕,黄揆.国产亚临界600 MW汽轮机组通流改造技术方案介绍[J].机械工程师,2014(4):228-229.
• [2]张丰.盘山电厂600 MW亚临界机组通流改造[J].能源与节能,2013(9):91-93.
• [3]苏猛业.平圩600 MW汽轮机通流改造实施方案[J].电力设备,2006,7(6):69-73.
• [4]张勇海,肖俊峰,谷伟伟,等.600 MW机组汽轮机低压第5级动叶片断裂故障分析[J].热力发电,2013,42(11):130-133.
• [5]孙永平,包劲松,许立敏.600 MW汽轮机中排压损及五、六级抽汽温度偏高的试验与分析[J].浙江电力,2008,27(5):30-32.