SHAFT SEALING SYSTEM FOR STEAM TURBINE

摘要

PROBLEM TO BE SOLVED: To provide a shaft sealing system for a steam turbine.SOLUTION: A shaft sealing system and a shaft sealing method are disclosed for a low pressure turbine section having a rotating member including a shaft and a stationary member surrounding the rotating member and defining a steam flow path. The shaft sealing system includes at least one seal disposed about each of a first end and a second end of the shaft, and a first connection line for supplying steam from the first turbine section to a downstream section of the turbine. The downstream section of the turbine has a lower pressure than both of a pressure of the first turbine section and an ambient pressure.