600MW汽轮机凝汽器喉部数值模拟  

Numerical simulation of condenser throat of 600 MW steam turbine

作　　者：董倩茹 盛伟 DONG Qian-ru;SHENG Wei(School of Energy and Power Engineering,Shenyang Institute of Engineering,Shenyang 110136,Liaoning Province;Development Planning Division,Shenyang Institute of Engineering,Shenyang 110136,Liaoning Province)

机构地区：[1]沈阳工程学院能源与动力学院,辽宁沈阳110136 [2]沈阳工程学院发展规划处,辽宁沈阳110136

出　　处：《沈阳工程学院学报（自然科学版）》2023年第1期36-41,共6页Journal of Shenyang Institute of Engineering:Natural Science

摘　　要：根据600 MW汽轮机机组的凝汽器喉部建立物理及数学模型,同时考虑小机排汽的影响并在ANSYS软件中进行数值模拟。在100%、75%、50%THA(total hydrocarbons analyzer)工况下,对凝汽器喉部的汽动性能、静压恢复系数、喉部汽阻及总压损失系数的分布规律进行分析可知:随着质量流量降低,凝汽器喉部出口的均匀性系数减小,出口静压恢复系数增大,总压损失系数降低,流场随着工况的改变逐渐恶化。此结果可为凝汽器喉部优化改造提供一定的理论基础。Considering the influence of small turbine exhaust steam,a physical and mathematical model of condenser throat of 600 MW turbine unit is established,and the numerical simulation is carried out in ANSYS software.From the analysis of the distribution rules of aerodynamic performance,static pressure recovery coefficient,throat vapor resistance and total pressure loss coefficient of the condenser throat under 100%,75% and 50%THA(total hydrocarbons analyzer) conditions,it is concluded that with the decreasingmass flow under the different THA conditions,the uniformity coefficient at the outlet of the condenser throat decreases,the static pressure recovery coefficient increases,and the total pressure loss coefficient decreases.The flow field deteriorates gradually with the change of the working condition.The analysis results can provide a theoretical basis for the subsequent optimization of the condenser throat.

关 键 词：凝汽器喉部 热耗率验收工况 数值分析 

分 类 号：TM621[电气工程—电力系统及自动化]