Title:
SHAFT SEAL DEVICE, AND ROTATING MACHINE
Document Type and Number:
WIPO Patent Application WO/2018/173315
Kind Code:
A1
Abstract:
This shaft seal device (1) is provided between a rotor and a stator surrounding the rotor, and partitions a space between the rotor and the stator into a high-pressure region (S2) and a low-pressure region in the direction (Da) of the central axis of the rotor. The shaft seal device (1) is provided with a seal segment (20) and a foreign matter recovery part (50A). The seal segment (20) is fixed to the stator, and protrudes towards the rotor. The foreign matter recovery part (50A) is provided in the high-pressure region (S2) upstream of the seal segment (20), and has a foreign matter recovery space (54) formed therein. An introduction hole (51d) for introducing foreign matter in the high-pressure region (S2) into the foreign matter recovery space (54) is formed in the foreign matter recovery part (50A).
Inventors:
YOSHIDA AZUMI (JP)
OZAKI KOHEI (JP)
UEHARA HIDEKAZU (JP)
NISHIMOTO SHIN (JP)
OZAKI KOHEI (JP)
UEHARA HIDEKAZU (JP)
NISHIMOTO SHIN (JP)
Application Number:
PCT/JP2017/030942
Publication Date:
September 27, 2018
Filing Date:
August 29, 2017
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
F16J15/447; F01D11/00; F01D11/02; F02C7/28; F04D29/12; F16J15/22
Foreign References:
| JP2014066134A | 2014-04-17 | |||
| JP5851890B2 | 2016-02-03 | |||
| US6273426B1 | 2001-08-14 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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