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Title:
METHOD FOR MONITORING HOOK ACTION OF CONTROL ROD DRIVING MECHANISM OF NUCLEAR POWER STATION, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/036484
Kind Code:
A1
Abstract:
A method for monitoring a hook action of a control rod driving mechanism of a nuclear power station, comprising: acquiring current signals of LC, MG and SG coils and noise generated by a hook action during rod lifting and rod inserting to generate a monitoring waveform; identifying characteristic points ma1 and mb1 at the beginning of closing of the MG coil and the LC coil in the monitoring waveform, and identifying rod lifting or rod inserting according to the sequence of the characteristic points ma1 and mb1; searching for characteristic points at the beginning of each coil action and a characteristic point corresponding to the end of the hook action in the monitoring waveform by taking the characteristic points ma1 and mb1 as starting points according to the time sequence of the characteristic points corresponding to the rod lifting or rod inserting; and calculating the hook action time according to the characteristic points, determining whether the hook action time is valid, and generating a monitoring signal. Detection is convenient, measurement is accurate, and monitoring accuracy is high. Also disclosed in the present application are a corresponding electronic device and a readable storage medium.

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Inventors:
MA JUNCHAO (CN)
LI DONGDONG (CN)
ZHOU QI (CN)
LI TAO (CN)
Application Number:
PCT/CN2020/099058
Publication Date:
March 04, 2021
Filing Date:
June 30, 2020
Export Citation:
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Assignee:
CHINA NUCLEAR POWER TECHNOLOGY RES INST CO LTD (CN)
CHINA GENERAL NUCLEAR POWER (CN)
CGN POWER CO LTD (CN)
International Classes:
G21C17/00; G21C17/10
Foreign References:
CN110570958A2019-12-13
CN105070334A2015-11-18
JP2002071877A2002-03-12
JP2007198954A2007-08-09
CN104332195A2015-02-04
CN101067976A2007-11-07
CN105551543A2016-05-04
CN200610152151A2006-09-15
Other References:
See also references of EP 4009335A4
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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