首台300MW汽轮机循环水供热改造技术与经济指标分析  

Transformation Technology and Economic Indicators Analysis of the First 300MW Steam Turbine Supplying Heat Using High-temperature Circulating Water

作　　者：成渫畏 王学栋 宋昂 

机构地区：[1]华电国际山东分公司安生部,山东济南250014 [2]华电电力科学研究院山东分院,山东济南250014

出　　处：《发电与空调》2016年第1期6-10,共5页

摘　　要：介绍了首台亚临界300MW汽轮机高温循环水供热改造技术和改造内容,并阐述了与135MW等级机组改造的异同点。在135MW等级机组双背压双转子互换改造技术的基础上,300MW汽轮机解决了双层低压缸通用性改造、给水泵小汽轮机改造以及凝结水精处理系统改造等关键技术难题,成功实施了高温循环水直接供热技术改造。由改造后性能考核试验结果得知,机组各项经济指标达到设计值,节能效果显著。This paper introduces the technology and content of the first subcritical 300MW steam turbine transforma- tion using high-temperature circulating water for direct heating, and illustrates the similarities and differences with the 135MW stage units. On the basis of transformation technology of double back-pressure and dual rotor switch on 135MW stage units, Technical problems that commonality transformation of dual low-pressure cylinder, feeding water pump turbine transformation, and condensate polishing treatment system transformation have been solved on 300MW turbine unit to achieve direct heating using high-temperature circulating water. After transformation, the performance test results show that economic indicators of the unit have reached design values. Its energy-saving effect is remarkable.

关 键 词：300MW汽轮机 循环水供热 高背压改造 高背压供热 双转子互换 

分 类 号：TM621[电气工程—电力系统及自动化]