中国电机工程学报2017，Vol.37Issue(16)：4722-4730,9.DOI:10.13334/j.0258-8013.pcsee.161295
耦合末级的1000MW汽轮机排汽通道数值模拟
Numerical Simulation of the Exhaust Passage Coupling With Last Stage in a 1000MW Steam Turbine
摘要
Abstract
The flow field of exhaust passage has an obvious influence on the heat transfer performance of condenser and the safety and economy of steam turbine unit.Considering the influence among steam turbine last stage,exhaust hood,and condenser throat,exhaust passage coupling with last stage in a 1000MW steam turbine were simulated by using computational fluid dynamics (CFD) software.And in order to clearly understand the flow field of exhaust passage,the above results were compared with the results of the part coupling simulation.According to the analysis of exhaust passage flow field,optimization measure that installing multiple sets of guide plates into exhaust passage was put forward to improve the flow flied of exhaust passage.The calculation results show that:there is an obvious difference between the overall coupling simulation results and the part coupling simulation results,mainly reflected in the flow field and aerodynamic performance;guide plates equipped improve the flow flied of exhaust passage.Under 100％THA working condition,the pressure loss of the low-pressure exhaust passage reduces 191.83Pa and the uniformity coefficient of the exit increases by 9.26％.关键词
1000 MW汽轮机/排汽通道/末级/耦合计算/导流板/数值模拟Key words
1000MW steam turbine/exhaust passage/last stage/coupled simulation/guide plate/numerical simulation分类
能源科技引用本文复制引用
付文锋,刘康,周兰欣..耦合末级的1000MW汽轮机排汽通道数值模拟[J].中国电机工程学报,2017,37(16):4722-4730,9.基金项目
国家自然科学基金项目(51606066) （51606066）
中央高校基本科研业务费专项资金资助项目(2017MS117).Project Supported by National Natural Science Foundation of China (51606066) （2017MS117）
The Fundamental Research Fund for the Central Universities(2017MS117). （2017MS117）
