Research on Static Characteristics of High Precision Capacitance Rod Position Measurement Sensor
Control rod hydraulic drive system (CRHDS) is the key power control equipment of 200 MW Nuclear Heating Reactor (NHR-200), and the capacitance rod position measurement sensor (CRPMS) is the key measurement equipment of CRHDS. For the measurement error caused by the eccentricity of the measuring rod...
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| Format: | Article |
| Language: | English |
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Editorial Board of Atomic Energy Science and Technology
2022-12-01
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| Series: | Yuanzineng kexue jishu |
| Subjects: | |
| Online Access: | https://www.aest.org.cn/CN/abstract/abstract21623.shtml |
| _version_ | 1797955510502162432 |
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| author | LI Yanlin;QIN Benke;BO Hanliang |
| author_facet | LI Yanlin;QIN Benke;BO Hanliang |
| author_sort | LI Yanlin;QIN Benke;BO Hanliang |
| collection | DOAJ |
| description | Control rod hydraulic drive system (CRHDS) is the key power control equipment of 200 MW Nuclear Heating Reactor (NHR-200), and the capacitance rod position measurement sensor (CRPMS) is the key measurement equipment of CRHDS. For the measurement error caused by the eccentricity of the measuring rod, a new measurement method which can separate the capacitance variation caused by the stepping and eccentricity of the measuring rod was proposed (eccentricity-stepping separation method). Based on this method, a design of four-helix electrodes CRPMS was proposed. For the sensor, the theoretical model was established by finite element method, and the static characteristic experiment was carried out. The calculation results of the theoretical model are in good agreement with the experimental results. Based on the theoretical model, the function between capacitance values and rod positions was established, and the measurement error of the sensor was systematically analyzed. The structure optimization of the sensor was conducted. The results show that for the four-helix electrodes CRPMS with eccentricity-stepping separation method, the maximum measurement error is -3.11 mm under the calculation conditions, which can meet the requirements of rod position measurement without losing step. The results provide guidance for the improvement of CRPMS. |
| first_indexed | 2024-04-10T23:34:16Z |
| format | Article |
| id | doaj.art-b98291ae16544967a39787bb53077835 |
| institution | Directory Open Access Journal |
| issn | 1000-6931 |
| language | English |
| last_indexed | 2024-04-10T23:34:16Z |
| publishDate | 2022-12-01 |
| publisher | Editorial Board of Atomic Energy Science and Technology |
| record_format | Article |
| series | Yuanzineng kexue jishu |
| spelling | doaj.art-b98291ae16544967a39787bb530778352023-01-12T02:07:54ZengEditorial Board of Atomic Energy Science and TechnologyYuanzineng kexue jishu1000-69312022-12-01561225642572Research on Static Characteristics of High Precision Capacitance Rod Position Measurement SensorLI Yanlin;QIN Benke;BO Hanliang 0Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China Control rod hydraulic drive system (CRHDS) is the key power control equipment of 200 MW Nuclear Heating Reactor (NHR-200), and the capacitance rod position measurement sensor (CRPMS) is the key measurement equipment of CRHDS. For the measurement error caused by the eccentricity of the measuring rod, a new measurement method which can separate the capacitance variation caused by the stepping and eccentricity of the measuring rod was proposed (eccentricity-stepping separation method). Based on this method, a design of four-helix electrodes CRPMS was proposed. For the sensor, the theoretical model was established by finite element method, and the static characteristic experiment was carried out. The calculation results of the theoretical model are in good agreement with the experimental results. Based on the theoretical model, the function between capacitance values and rod positions was established, and the measurement error of the sensor was systematically analyzed. The structure optimization of the sensor was conducted. The results show that for the four-helix electrodes CRPMS with eccentricity-stepping separation method, the maximum measurement error is -3.11 mm under the calculation conditions, which can meet the requirements of rod position measurement without losing step. The results provide guidance for the improvement of CRPMS.https://www.aest.org.cn/CN/abstract/abstract21623.shtmlcontrol rod positioncapacitance sensorfour-helix electrodeseccentricity-stepping separation method |
| spellingShingle | LI Yanlin;QIN Benke;BO Hanliang Research on Static Characteristics of High Precision Capacitance Rod Position Measurement Sensor Yuanzineng kexue jishu control rod position capacitance sensor four-helix electrodes eccentricity-stepping separation method |
| title | Research on Static Characteristics of High Precision Capacitance Rod Position Measurement Sensor |
| title_full | Research on Static Characteristics of High Precision Capacitance Rod Position Measurement Sensor |
| title_fullStr | Research on Static Characteristics of High Precision Capacitance Rod Position Measurement Sensor |
| title_full_unstemmed | Research on Static Characteristics of High Precision Capacitance Rod Position Measurement Sensor |
| title_short | Research on Static Characteristics of High Precision Capacitance Rod Position Measurement Sensor |
| title_sort | research on static characteristics of high precision capacitance rod position measurement sensor |
| topic | control rod position capacitance sensor four-helix electrodes eccentricity-stepping separation method |
| url | https://www.aest.org.cn/CN/abstract/abstract21623.shtml |
| work_keys_str_mv | AT liyanlinqinbenkebohanliang researchonstaticcharacteristicsofhighprecisioncapacitancerodpositionmeasurementsensor |