SHAFT SEALING DEVICE AND ROTATING MACHINE COMPRISING SAME

摘要

This shaft sealing device is provided in an annular space between a rotor and a stator surrounding the outer periphery of the rotor, and divides the annular space in the axial direction of the rotor into a high-pressure region and a low-pressure region. The shaft sealing device is provided with a rigidity-imparting means for imparting axially-directed rigidity to a part of a surface facing the high-pressure region on a high-pressure side plate, the rigidity-imparting means being provided with: a sealer obtained by layering in the peripheral direction of the rotor a plurality of thin-sheet sealing pieces extending out from the stator toward the radial inside of the rotor; and the high-pressure side plate, which extends radially inward from the stator so as to run along the high-pressure side of the sealer, and is segmented into a plurality in the peripheral direction.