{"title":"控制棒涡流缓速器连续工作特性分析","authors":"Hongyu Wu, He Yan, Yujie Dong, Xingzhong Diao","doi":"10.1016/j.anucene.2025.111888","DOIUrl":null,"url":null,"abstract":"<div><div>The control rod eddy current retarder (CRECR) serves as the primary damping device during the control rod dropping process in the high temperature gas-cooled reactor, converting the gravitational potential energy into eddy current losses inside the conductor disk of CRECR. In order to analyze the torque performance of CRECR during continuous operation, a multi-node coupling method for electromagnetic and thermal simulation was proposed, and an electromagnetic-thermal coupling simulation model was established. Subsequently, the model was experimentally verified and the influence of speed, operating time and compensation claddings were analyzed. The torque deviation remains consistently below 7 % within 300 s. Additionally, continuous operation at speeds exceeding 300 rpm resulted in non-ignorable changes in component temperature and torque, necessitating careful consideration in engineering tests. Furthermore, a torque rebound phenomenon was observed during continuous operation, indicating that using compensation claddings can effectively mitigate the impact of thermal fade and improve the torque stability.</div></div>","PeriodicalId":8006,"journal":{"name":"Annals of Nuclear Energy","volume":"226 ","pages":"Article 111888"},"PeriodicalIF":2.3000,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Analysis of the continuous operational characteristics of the control rod eddy current retarder\",\"authors\":\"Hongyu Wu, He Yan, Yujie Dong, Xingzhong Diao\",\"doi\":\"10.1016/j.anucene.2025.111888\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The control rod eddy current retarder (CRECR) serves as the primary damping device during the control rod dropping process in the high temperature gas-cooled reactor, converting the gravitational potential energy into eddy current losses inside the conductor disk of CRECR. In order to analyze the torque performance of CRECR during continuous operation, a multi-node coupling method for electromagnetic and thermal simulation was proposed, and an electromagnetic-thermal coupling simulation model was established. Subsequently, the model was experimentally verified and the influence of speed, operating time and compensation claddings were analyzed. The torque deviation remains consistently below 7 % within 300 s. Additionally, continuous operation at speeds exceeding 300 rpm resulted in non-ignorable changes in component temperature and torque, necessitating careful consideration in engineering tests. Furthermore, a torque rebound phenomenon was observed during continuous operation, indicating that using compensation claddings can effectively mitigate the impact of thermal fade and improve the torque stability.</div></div>\",\"PeriodicalId\":8006,\"journal\":{\"name\":\"Annals of Nuclear Energy\",\"volume\":\"226 \",\"pages\":\"Article 111888\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2025-09-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Annals of Nuclear Energy\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0306454925007054\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"NUCLEAR SCIENCE & TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Annals of Nuclear Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0306454925007054","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}
Analysis of the continuous operational characteristics of the control rod eddy current retarder
The control rod eddy current retarder (CRECR) serves as the primary damping device during the control rod dropping process in the high temperature gas-cooled reactor, converting the gravitational potential energy into eddy current losses inside the conductor disk of CRECR. In order to analyze the torque performance of CRECR during continuous operation, a multi-node coupling method for electromagnetic and thermal simulation was proposed, and an electromagnetic-thermal coupling simulation model was established. Subsequently, the model was experimentally verified and the influence of speed, operating time and compensation claddings were analyzed. The torque deviation remains consistently below 7 % within 300 s. Additionally, continuous operation at speeds exceeding 300 rpm resulted in non-ignorable changes in component temperature and torque, necessitating careful consideration in engineering tests. Furthermore, a torque rebound phenomenon was observed during continuous operation, indicating that using compensation claddings can effectively mitigate the impact of thermal fade and improve the torque stability.
期刊介绍:
Annals of Nuclear Energy provides an international medium for the communication of original research, ideas and developments in all areas of the field of nuclear energy science and technology. Its scope embraces nuclear fuel reserves, fuel cycles and cost, materials, processing, system and component technology (fission only), design and optimization, direct conversion of nuclear energy sources, environmental control, reactor physics, heat transfer and fluid dynamics, structural analysis, fuel management, future developments, nuclear fuel and safety, nuclear aerosol, neutron physics, computer technology (both software and hardware), risk assessment, radioactive waste disposal and reactor thermal hydraulics. Papers submitted to Annals need to demonstrate a clear link to nuclear power generation/nuclear engineering. Papers which deal with pure nuclear physics, pure health physics, imaging, or attenuation and shielding properties of concretes and various geological materials are not within the scope of the journal. Also, papers that deal with policy or economics are not within the scope of the journal.