To improve sealing performance by preventing permanent deformation of a plurality of thin plates in a shaft seal provided with the thin plates arrayed in the circumference direction with the inner end being pressed against a rotary shaft.
This shaft seal for a rotary machine for sealing the rotary shaft and a casing 21 surrounding the rotary shaft is constituted of a seal ring 23 supported by the casing 21, so as to surround the rotary shaft 1, a plurality of seal fins 25 mounted at mutual intervals on the internal surface of the seal ring 23 for forming a labyrinth seal, a pair of holders 27 and 29 located between the adjacent seal fins 25 and provided on the seal ring 23 and the plurality of thin plates 9 which are supported between the holders 27 and 29, are mutually disposed in the circumferential direction at narrow intervals and have inner ends contacting the external surface of the rotary shaft 1 by being inclined with respect to the external surface.
SHINOHARA TANEHIRO
MIYAWAKI TOSHIHIRO
KONISHI SATORU
NAKANO TAKASHI
ENOMOTO KENJI
TODA YUTAKA
