国产引进型300MW汽轮机通流部分改造及效益分析  

Renovation of the Flowtube of Imported-type 300 MW Steam Turbine and Its Benefit Analysis

作　　者：沈永流 朱宝宇 

机构地区：[1]国电丰城发电有限公司,江西丰城331100

出　　处：《能源技术经济》2011年第2期36-39,44,共5页Electric Power Technologic Economics

摘　　要：分析了国产引进型300 MW双缸双排汽凝汽式汽轮机热耗率大、经济性差的原因。采用全三维技术对汽轮机高中压通流部分进行改造,设计使用了先进的子午收缩型调节级和弯扭马刀叶片,有效提高了机组的经济性和可靠性。该技术在江西丰城发电厂4×300 MW机组上的应用经验,可为其他同类机组增容降耗改造提供借鉴。This paper analyzes the causes leading to the high heat consumption and poor efficiency of the imported-type 300 MW condensing steam turbine with dual casings and dual exhausts. 3-dimensional technology, including the meridian contracting type governing stage and back-bent twisted blades technique,is used to renovated the HP-IP turbine flow-passage, in order to raise the units＇ economic efficiency and reliability. The application of this technology to the Jiangxi Fengcheng Power Plant 4 × 300 MW units can provide a useful reference for other similar units to increase their capacity and reduce consumption.

关 键 词：汽轮机 通流改造 热耗率 效益分析 

分 类 号：TM621.3[电气工程—电力系统及自动化] TK269.1[动力工程及工程热物理—动力机械及工程]