Title:
SHAFT SEALING MECHANISM
Document Type and Number:
WIPO Patent Application WO/2016/098752
Kind Code:
A1
Abstract:
Provided is a shaft sealing mechanism wherein the flexibility of thin-plate seal pieces can be maintained and vibration of the thin-plate seal pieces can be suppressed by partially thickening the thin-plate seal pieces. A shaft sealing mechanism (11) that partitions an annular space (14) that is formed between a fixed part (12) and a rotating shaft (13) into a high-pressure-side region and a low-pressure-side region, that obstructs the flow of a fluid (G), and that is provided with: a plurality of annularly laminated thin-plate seal pieces (22) that are fixed to an annular seal housing (21) that is provided to the fixed part (12) and are in sliding contact with the rotating shaft (13); and an annular low-pressure-side plate (26) that is sandwiched and held such that a low-pressure-side gap (δL) is formed between the seal housing (21) and a low-pressure-side side edge part (22d) of the thin-plate seal pieces (22). The thin-plate seal pieces (22) have a thick part (31) that is formed further to the inside in the radial direction of the rotating shaft than an inner-circumferential-side tip part (26a) of the low-pressure-side plate (26).
Inventors:
OZAKI KOHEI (JP)
YOSHIDA AZUMI (JP)
UEHARA HIDEKAZU (JP)
SHINOHARA TANEHIRO (JP)
OYAMA HIROHARU (JP)
YOSHIDA AZUMI (JP)
UEHARA HIDEKAZU (JP)
SHINOHARA TANEHIRO (JP)
OYAMA HIROHARU (JP)
Application Number:
PCT/JP2015/085000
Publication Date:
June 23, 2016
Filing Date:
December 15, 2015
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
F16J15/22; F01D11/00; F02C7/28
Foreign References:
| JP2007132432A | 2007-05-31 | |||
| JP2013238311A | 2013-11-28 |
Other References:
See also references of EP 3220018A4
Attorney, Agent or Firm:
MITSUISHI, Toshiro et al. (JP)
Toshiro Mitsuishi (JP)
Toshiro Mitsuishi (JP)
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