Title:
ANTICORROSIVE PERFORMANCE DETERIORATION DETECTION SENSOR, AND HOT-WATER SUPPLY AND HEATING SYSTEM PROVIDED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2014/038687
Kind Code:
A1
Abstract:
An anticorrosive performance deterioration detection sensor is provided with: an electrically conductive pipe with an anticorrosion film formed on an inner surface thereof; an electrode installed in a pipeline in contact with a liquid in the pipeline while insulated from the pipe; a resistor with one end connected to an external surface of the pipe; and an alternating-current power supply with one terminal connected to a terminal drawn from the pipe and the other terminal connected to a terminal drawn from the electrode and the resistor. On the basis of a change in the frequency dependency of impedance as a result of the switching of a current flow passageway due to deterioration of the anticorrosion film, deterioration of the anticorrosion film is accurately detected by accurately separating the influence of the external environment while preventing damage to the anticorrosion film and inducement of erosion progression by the measurement.
Inventors:
MORIMURA HIDEYUKI (JP)
KURIKI HIRONORI (JP)
MIYA KAZUHIRO (JP)
FURUKAWA SEIJI (JP)
KURIKI HIRONORI (JP)
MIYA KAZUHIRO (JP)
FURUKAWA SEIJI (JP)
Application Number:
PCT/JP2013/074197
Publication Date:
March 13, 2014
Filing Date:
September 09, 2013
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G01N27/00; F24D3/00; F24F11/02; G01N27/02
Domestic Patent References:
| WO2013065207A1 | 2013-05-10 |
Foreign References:
| JP2532038B2 | 1996-09-11 | |||
| JPS58165649U | 1983-11-04 | |||
| JPH0249150A | 1990-02-19 | |||
| JP2007101184A | 2007-04-19 | |||
| JP2003083924A | 2003-03-19 | |||
| JPH04172241A | 1992-06-19 | |||
| JP2010266342A | 2010-11-25 | |||
| JPH09268386A | 1997-10-14 | |||
| JP2012220288A | 2012-11-12 | |||
| JP2532038B2 | 1996-09-11 | |||
| JP2005315864A | 2005-11-10 |
Other References:
KOJI HONMA: "The coated steel plate degradation evaluation sensors applying the alternating current impedance method", RUST PREVENTION AND CONTROL, vol. 35, no. 1, 1 January 1991 (1991-01-01), pages 14 - 19, XP008176799
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
Patent business corporation きさ patent trademark office (JP)
Patent business corporation きさ patent trademark office (JP)
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