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Title:
SHAFT SEALING DEVICE FOR MARINE CONTRA-ROTATING PROPELLER DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/097816
Kind Code:
A1
Abstract:
This shaft sealing device 50 is provided with a stern tube seal 52 on the stern side, a contra-rotating seal 54 on the stern side, a single air supply device 56, a stern tube drainage recovery device 58, and a contra-rotating drainage recovery device 60. The single air supply device 56 supplies sealing air A to the stern tube seal 52 on the stern side and to the contra-rotating seal 54 on the stern side via the stern tube seal 52. The stern tube drainage recovery device 58 independently recovers a front section drainage D1 discharged from the stern tube seal 52 on the stern side. The contra-rotating drainage recovery device 60 separates and recovers, from the front section drainage D1, a rear section drainage D2 discharged from the contra-rotating seal 54 on the stern side.

Inventors:
SHIMIZU Masahiro (4-2 Minatomirai 4-Chome, Nishi-ku, Yokohama-Cit, Kanagawa 12, 〒2200012, JP)
NISHIYAMA Saiki (4-2 Minatomirai 4-Chome, Nishi-ku, Yokohama-Cit, Kanagawa 12, 〒2200012, JP)
MISAWA Shingo (4-2 Minatomirai 4-Chome, Nishi-ku, Yokohama-Cit, Kanagawa 12, 〒2200012, JP)
NAKAIE Masashi (4-2 Minatomirai 4-Chome, Nishi-ku, Yokohama-Cit, Kanagawa 12, 〒2200012, JP)
OKAMOTO Mitsuhiro (7-14-37 Mukaishinjyomachi, Toyama-sh, Toyama 16, 〒9300916, JP)
TANEGUCHI Shun (7-14-37 Mukaishinjyomachi, Toyama-sh, Toyama 16, 〒9300916, JP)
Application Number:
JP2018/032566
Publication Date:
May 23, 2019
Filing Date:
September 03, 2018
Export Citation:
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Assignee:
JAPAN MARINE UNITED CORPORATION (4-2 Minatomirai 4-Chome, Nishi-ku Yokohama-Cit, Kanagawa 12, 〒2200012, JP)
WARTSILA JAPAN LTD. (7-2 Minatojima 6-chome, Chuo-ku Kobe-sh, Hyogo 45, 〒6500045, JP)
International Classes:
B63H23/36; B63H5/10; F16C17/02; F16C33/74; F16J15/18; F16J15/324; F16N7/22; F16N7/38; F16N11/08; F16N13/22; F16N31/00
Foreign References:
JP2009179233A2009-08-13
JPH0496597U1992-08-20
JPH02130425U1990-10-26
JPH0431367U1992-03-13
JPH06321184A1994-11-22
JPS6144397U1986-03-24
Other References:
SAITO KENICHI: "Optimization of seal devices for contrarotating propellers introduction of each system and optimization of sealing device", JOURNAL OF THE JIME, vol. 52, no. 2, March 2017 (2017-03-01), pages 166 - 169
KIDO YOSHITAKA: "Sealing device for podded propulsion system with contra-rotating propellers", JOURNAL OF THE JIME, vol. 39, no. 9, September 2004 (2004-09-01), pages 577 - 581, ISSN: 1884-3778
OTA TETSUZO ET AL.: "World first contra-rotating propellers using VLCC Winning Marine Engineering of the Year", JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN, vol. 30, no. 1, January 1995 (1995-01-01), pages 9 - 16, XP055609324, ISSN: 1884-4758
Attorney, Agent or Firm:
HOTTA Minoru (ASA INTERNATIONAL PATENT FIRM, 3F Taishodo Bldg., 14-16, Shiba 5-Chome, Minato-k, Tokyo 14, 〒1080014, JP)
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