Shaft sealing system for steam turbines

摘要

A kind of axle sealing system and method are disclosed as high or intermediate pressure turbine part to have rotary part (120) including that axis (130) and fixing component (140) surround rotary part (120) and restriction vapor flow path (150). Axle sealing system includes the axis (130) that at least one sealing element is disposed around each first end (172) and second end (174); Turbine of the steam from the downstream parts (210) of the first turbine section (110) is carried out with connecting line (200). The low pressure stage of the steam turbine of downstream part (210) and a condenser (220) and pressure are lower than two kind of first turbine (110) and condition of normal pressure.