大型汽轮机汽封技术及其经济性分析

汽轮机汽封装置的密封性能会直接影响汽轮机汽封的蒸汽泄漏量，进而影响机组热效率。从结构、原理、性能等方面介绍了几种常用的汽轮机汽封型式，并根据各种汽封结构型式的密封机理，分析和比较了各自的密封性能及其应用效果。探讨了大型汽轮机汽封技术的发展方向。;Turbine seal can directly affect the turbine gland steam leakage,thereby affecting the thermal efficiency unit.In terms of the structure,principle and performance,various aspects of the several commonly used steam seal are introduced,and according to various types of sealing mechanisms,analysis and comparison of the existing types of turbine gland sealing performance as well as its application results are conducted.The development trend of the technological development of turbine gland sealing is predicted