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Title:
MULTI-STAGE SHAFT SEAL DEVICE AND ROTARY MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/188526
Kind Code:
A1
Abstract:
A multi-stage shaft seal device according to one embodiment is equipped with a first seal section, a second seal section, and a third seal section, which are provided in sequence from the machine-interior side in a fluid leak passage formed between a rotary shaft or rotary member and a housing arranged so as to surround the rotary shaft or rotary member. The first seal section is configured to include a first runner and a first seal ring which form a noncontact seal surface. The second seal section is configured to include a second runner and a second seal ring which form a contact seal surface. The third seal section is configured to include a third runner and a third seal ring which form a contact seal surface. The multi-stage shaft seal device also is provided with a purge water supply path for supplying purge water to the third seal section, and a purge water discharge path for discharging the purge water supplied to the third seal section.

Inventors:
OTANI, Takanobu (16-5, Konan 2-Chome, Minato-k, Tokyo 15, 〒1088215, JP)
KUZUMI, Hiroshi (16-5, Konan 2-Chome, Minato-k, Tokyo 15, 〒1088215, JP)
TOKUMASU, Hiroyuki (16-5, Konan 2-Chome, Minato-k, Tokyo 15, 〒1088215, JP)
MATSUO, Toshihiko (16-5, Konan 2-Chome, Minato-k, Tokyo 15, 〒1088215, JP)
IKEDA, Yasuhiro (16-5, Konan 2-Chome, Minato-k, Tokyo 15, 〒1088215, JP)
ITO, Hitoshi (16-5, Konan 2-Chome, Minato-k, Tokyo 15, 〒1088215, JP)
TAKAYAMA, Yasushi (16-5, Konan 2-Chome, Minato-k, Tokyo 15, 〒1088215, JP)
HANADA, Tomoki (16-5, Konan 2-Chome, Minato-k, Tokyo 15, 〒1088215, JP)
Application Number:
JP2019/011284
Publication Date:
October 03, 2019
Filing Date:
March 18, 2019
Export Citation:
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Assignee:
MITSUBISHI HEAVY INDUSTRIES, LTD. (2-3 Marunouchi 3-Chome, Chiyoda-ku Tokyo, 32, 〒1008332, JP)
International Classes:
F16J15/34; F16J15/44; F16J15/447
Domestic Patent References:
WO2015011812A12015-01-29
Foreign References:
JPS6322397U1988-02-15
JP2014181752A2014-09-29
JP2014080961A2014-05-08
JP2009275900A2009-11-26
Attorney, Agent or Firm:
SEISHIN IP PATENT FIRM, P.C. (Mita 43MT Building 13th Floor, 13-16 Mita 3-Chome, Minato-k, Tokyo 73, 〒1080073, JP)
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