Title:
ROTARY MACHINE
Document Type and Number:
Japanese Patent JP2014238066
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To effectively decrease a rotational-direction speed of a swirl flow flowing into a seal part.SOLUTION: A rotary machine comprises: rotary body 12 rotating axially; a stationary body 6 arranged to face the rotary body 12 in a radial direction of the rotary body; a seal part 4 sealing a gap between the rotary body 12 and the stationary body 6; and a swirl flow suppression unit 25 including a plurality of concave portions 25 formed circumferentially recessed from the stationary body 6 on a high pressure side of the seal part 4 in the gap and reducing a swirl flow S flowing in a rotational direction R of the rotary body 12. Each concave portion 25 includes: a guide surface 26 connected to a forward edge 25a of the concave portion 25 in the rotational direction R in a cross-sectional view crossing an axial line and continuously extending so as to guide a branch flow S2 from the swirl flow S backward in the rotational direction R; and an introduction surface 27 connected to the guide surface 26 and introducing the branch flow S2 into the gap in the radial direction.
Inventors:
SABURI SEIJI
NAGAI NAOYUKI
TOKUYAMA SHINICHIRO
NAGAI NAOYUKI
TOKUYAMA SHINICHIRO
Application Number:
JP2013121639A
Publication Date:
December 18, 2014
Filing Date:
June 10, 2013
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
MITSUBISHI HEAVY IND COMPRESSOR CORP
MITSUBISHI HEAVY IND COMPRESSOR CORP
International Classes:
F04D29/10; F04D17/12; F04D29/16; F04D29/54; F16J15/447
Attorney, Agent or Firm:
Woods Ryuichiro
Masatake Shiga
Norio Takahashi
Tetsuo Yamazaki
Yasushi Matsunuma
Masatake Shiga
Norio Takahashi
Tetsuo Yamazaki
Yasushi Matsunuma