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| Analyiszs and Design the Thermal Shock Test of Radioisotope Heater Unit |
| Received:March 29, 2021 Revised:April 11, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2021.05.008 |
| KeyWord:deep space exploration radioisotope heater unit (RHU) nuclear safety thermal shock temperature shock water entry test method |
| Author | Institution |
| WANG Yi-jun |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| HU Yu-peng |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| LU Liang |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| XIANG Yan-hua |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| ZHANG Yi-chen |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| ZHU Chang-chun |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
| TANG Xian |
China Institute of Atomic Energy, Beijing , China |
| HU Shao-quan |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang , China |
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| Abstract: |
| The purpose is to investigate the safety of Radioisotope Heater Unit (RHU) when it fall into the sea and to study the methods of thermal shock test. First, some space application accidents is conducted. Then, the condition and the methods of thermal shock test are analyzed by the principle of thermal boundary equivalent and thermal equivalent. The condition of thermal shock test include the heating temperature, the volumes and the temperature of sea water, the transfer time ans so on. Finally, the test procedures is discussed. The thermal shock test conditions are identified:the heating temperature of the sample is (1100±10) ℃, the temperature of the artificial seawater is 10~30 ℃, and the volumes of artificial seawater is more than 20 times compared to the sample, the transfer time of the sample through the heating furnace to the artificial seawater is less than 1 min. The technology of the thermal shock test for RHU is developed to provide the techniques support for risk assessment of RHU. |
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