Wenderoth, Lind & Ponack, L.L.P.
Shaft seal device and rotary machine including shaft seal device
A shaft seal device includes a seal piece-laminated body with a plurality of thin seal pieces laminated in a circumferential direction along a rotating shaft. Outer ends of the plurality of thin seal pieces in the radial direction are connected to each other. Inner ends of the thin seal pieces in the radial direction are formed as free ends. A small gap is formed between each adjacent pair of the thin seal pieces. A small gap is formed between the rotating shaft and the seal piece-laminated body. A wear-resistant treatment layer is formed on a surface of a portion of each of the thin seal pieces close to the inner end.
MITSUBISHI HEAVY INDUSTRIES, LTD.
F F F F
F16J F05D F05D F01D
inventional additional additional inventional
Shin Hidekazu Tanehiro Takashi
Nishimoto Uehara Shinohara Nakano