Title:
VALVE OPERATION ABNORMALITY DETECTION SYSTEM, VALVE OPERATION ABNORMALITY DETECTION METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2022/186185
Kind Code:
A1
Abstract:
A valve operation abnormality detection system according to the present invention is provided with: a condition setting unit that sets, with respect to a control valve the opening and closing of which is controlled according to a predetermined opening and closing pattern, an allowed reaching time, which is a range of time allowed to elapse until a valve opening degree reaches a defined opening degree from a closed state; and an abnormality determination unit that, with respect to the control valve, determines that the control valve is normal if the time elapsing until the valve opening degree reaches the defined opening degree from the closed state is within the range of the allowed reaching time, and determines that the control valve is abnormal if the time elapsing until the valve opening degree reaches the defined opening degree is outside the range of the allowed reaching time.
Inventors:
AOTA HIROMI (JP)
KUBO HIROYOSHI (JP)
KIZU TETSUYA (JP)
FUKADA WATARU (JP)
KUBO HIROYOSHI (JP)
KIZU TETSUYA (JP)
FUKADA WATARU (JP)
Application Number:
PCT/JP2022/008555
Publication Date:
September 09, 2022
Filing Date:
March 01, 2022
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
MITSUBISHI POWER LTD (JP)
MITSUBISHI POWER LTD (JP)
International Classes:
G05B23/02
Foreign References:
| JP2017126248A | 2017-07-20 | |||
| JP2018185799A | 2018-11-22 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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