350 MW超临界机组汽轮机通流提效研究  

Research on Efficiency Improvement of Steam Turbine Passage of 350MW Supercritical Unit

作　　者：黄新长 沈峰 谭锐 殷戈 HUANG Xin-chang;SHEN Feng;TAN Rui(Guoneng Nanjing Electric Power Test&Research Co.,Ltd.)

机构地区：[1]国能南京电力试验研究有限公司

出　　处：《电站系统工程》2024年第1期43-47,共5页Power System Engineering

基　　金：国家能源集团科学技术研究院有限公司科技项目(DY2022Y01)资助。

摘　　要：以试验的方法研究了目前国内350 MW等级超临界汽轮机存在的主要问题,重点对影响汽轮机效率的各主要边界条件进行研究,详尽分析350 MW超临界机组的能耗情况。介绍了国内350 MW超临界汽轮机通流改造发展现状,在此基础上,对其中问题较突出的通流技术、进排汽技术、本体结构、密封结构、宽负荷提效等部分进行研究,比较了通流改造主要厂家的技术特点和实施项目的改造效果,针对通流改造中设计边界条件选取和考核方法提出建议,继而实现350 MW超临界机组宽负荷工况下改造提效,为汽轮机节能降耗工作提供参考。The main problems of 350MW supercritical steam turbine in China are studied by test method,focusing on the main boundary conditions that affect the efficiency of steam turbine,and then the energy consumption of 350MW supercritical unit is analyzed.The development status of the flow path transformation of 350MW supercritical steam turbine in China is introduced.On this basis,it focuses on the flow path technology,steam inlet and exhaust technology,body structure,sealing structure,wide load efficiency improvement and other parts with prominent problems,compares the technical characteristics of the main manufacturers of the flow path transformation and the transformation effect of the implementation projects,and puts forward suggestions on the selection and assessment methods of design boundary conditions in the flow path transformation,Then,the transformation of 350MW supercritical units under wide load conditions can be realized to improve efficiency,which also provides reference for energy conservation and consumption reduction of steam turbines.

关 键 词：350 MW 超临界机组 通流提效 宽负荷 节能降耗 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]