Title:
WATER QUALITY DIAGNOSTIC SYSTEM, POWER GENERATION PLANT, AND WATER QUALITY DIAGNOSTIC METHOD
Document Type and Number:
WIPO Patent Application WO/2019/098077
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a water quality diagnostic system in which degrees of water quality abnormality can be diagnosed more accurately and more uniformly; a power generation plant; and a water quality diagnostic method. This water quality diagnostic system disposed in a power generation plant is provided with: an electric conductivity measurement unit (3) that is disposed in a water circulation line (1) of a power generation plant and measures the electric conductivities of circulating water; a pH measurement unit (4) that is disposed in the water circulation line (1) and measures pH values of the circulating water; and a control device (5) that diagnoses degrees of water quality abnormality. The control device (5) is provided with: a storage unit that stores reference values based on correlations between the pH values and the electric conductivities in the water circulation line (1), a plurality of preset ranks that indicate the degrees of water quality abnormality in the water circulation line (1), and a range of deviations from the reference values corresponding to the plurality of ranks; and a rank determination unit that determines the ranks of measurement results, on the basis of the measurement results by the electric conductivity measurement unit (3) and the pH measurement unit (4), and on the basis of the range of deviations stored in the storage unit.
Inventors:
WADA TAKAYUKI (JP)
TSUBAKIZAKI SENICHI (JP)
SHIMODA SHO (JP)
TSUBAKIZAKI SENICHI (JP)
SHIMODA SHO (JP)
Application Number:
PCT/JP2018/041063
Publication Date:
May 23, 2019
Filing Date:
November 05, 2018
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
G01N33/18; G05B23/02
Foreign References:
| US20100051477A1 | 2010-03-04 | |||
| JP2016205781A | 2016-12-08 | |||
| JP2009243972A | 2009-10-22 |
Other References:
ASAKURA, Y. ET AL.: "STRUCTURAL MATERIAL ANOMALY DETECTION SYSTEM USING WATER CHEMISTRY DATA, (V) IMPURITY IONS BALANCE EVALUATION BASED ON CONDUCTIVITY DATA AND ITSAPPLICATION TO WATER CHEMISTRY DIAGNOSIS IN BWR PLANTS", JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, vol. 27, no. 8, August 1990 (1990-08-01), pages 731 - 742, XP001057582
Attorney, Agent or Firm:
FUJITA, Takaharu (JP)
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