摘要
动密封技术控制着旋转动静部件的泄漏流动,对透平性能具有显著影响,干气密封是S-CO_(2)透平中广泛采用的一种高性能端面密封形式。基于哈汽公司自主研发的3MW S-CO_(2)轴流透平,开展干气密封结构方案设计。利用流热耦合的数值计算方法,开展干气密封冷却方案优化。计算结果表明,当密封冷却气流量不小于0.75 kg/s时,密封结构表面温度满足设计要求。
Dynamic sealing technology,which controls the leakage flow rate,has a significant influence on the performance of turbine,and dry gas seal is widely used in supercritical carbon dioxide turbine.In this paper,the structural scheme of dry gas seal is designed based on a 3MW S-CO_(2) Turbine independently developped by Harbin Turbine Company Limited.Optimization of cooling scheme is carried out with the method of fluid-thermal coupling calculation.The results indicate that surface temperature of dry gas seal meets the design requirement when the mass flow rate of cooling gas is greater than or equal to 0.75kg/s.
作者
郭鹏飞
GUO Peng-fei(Harbin Turbine Company Limited,Harbin 150046,China)
出处
《汽轮机技术》
北大核心
2021年第6期433-434,439,共3页
Turbine Technology
