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Title:
DEVICE AND METHOD FOR DETECTING SEAWATER LEAKAGE IN WATER SUPPLY SYSTEM, AND STEAM TURBINE PLANT
Document Type and Number:
WIPO Patent Application WO/2019/077832
Kind Code:
A1
Abstract:
A device and method for detecting seawater leakage in a water supply system, and a steam turbine plant, which are provided with: an ammonia addition device (81) for adding ammonia as a pH adjuster to feed water (W) upstream from a high-pressure drum (72) in a water supply line (L11); an acid electrical conductivity meter (84) for measuring acid electrical conductivity in drum water (W3) in the high-pressure drum (72); and a control device (88) that controls the ammonia addition device (81) such that the pH value of drum water in a waste heat recovery boiler (12) reaches an alkalinity that is equal to or greater than a preset prescribed value, and that calculates the chlorine ion concentration of the drum water on the basis of the acid electrical conductivity measured by the acid electrical conductivity meter (84) and determines whether a leakage of saltwater (SW) has been detected.

Inventors:
KIDO, Haruka (3-1, Minatomirai 3-chome, Nishi-ku, Yokohama-sh, Kanagawa 01, 〒2208401, JP)
HAMASAKI, Akihiro (3-1, Minatomirai 3-chome, Nishi-ku, Yokohama-sh, Kanagawa 01, 〒2208401, JP)
KANEDOME, Masato (16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
Application Number:
JP2018/027966
Publication Date:
April 25, 2019
Filing Date:
July 25, 2018
Export Citation:
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Assignee:
MITSUBISHI HITACHI POWER SYSTEMS, LTD. (3-1 Minatomirai 3-chome, Nishi-ku Yokohama-sh, Kanagawa 01, 〒2208401, JP)
International Classes:
F22B37/38; F01K9/00; F01K23/10; F22B37/52
Domestic Patent References:
WO2014129244A12014-08-28
Foreign References:
JP2016031154A2016-03-07
JP2009243972A2009-10-22
JP2017154049A2017-09-07
JP2015148411A2015-08-20
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (Toranomon Mitsui Building, 8-1 Kasumigaseki 3-chome, Chiyoda-k, Tokyo 13, 〒1000013, JP)
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