面向核电的玻璃-金属密封型电气贯穿件应力检测方法研究进展

摘要/Abstract

摘要： 电气贯穿件是核反应堆内的专用电气设备,玻璃-金属密封型电气贯穿件具有优异的密封性能、耐高温性能和长服役寿命而被应用于第四代核反应堆。电气贯穿件的密封性能与玻璃中的应力紧密相关,适当的应力是保证其在严苛环境中实现有效密封的关键因素,因此,应力的有效测量一直是学者关注的重点。首先,对电气贯穿件的结构做了说明,并讨论了应力对玻璃-金属封接的影响,应力的大小决定了玻璃-金属界面承压能力的强弱,并且会影响电气贯穿件的服役寿命。其次,重点阐述了压痕技术、光纤布拉格光栅传感器技术、荧光光谱技术等玻璃-金属封接中应力测量方法的研究进展,还介绍了有限元模拟方法在表征应力方面的应用。最后,对未来研究工作进行了展望。

关键词: 电气贯穿件, 玻璃-金属封接, 压缩应力, 应力测量

Abstract: Electrical penetration assembly (EPA) is a specially electrical equipment in nuclear reactors. Glass-metal sealed EPA is used in the fourth-generation nuclear reactors because of its excellent sealing performance, high temperature resistance and long service life. The sealing performance of EPA is closely related to the magnitude of stress in glass. Sufficient stress is the key factor to achieve effective sealing in harsh environment. The valid analytical measurement of stress has always been the main topic. In this review, the structure of EPA was introduced. And the influence of stress on glass-metal sealing was explained. The magnitude of stress determines the pressure resistance ability of glass-metal interface and affects the service life of EPA. In addition, the research progresses of various measurement methods of stress in glass-metal sealing including indentation technology, fiber Bragg grating technology and photoluminescence spectroscopy technique were elaborated. Moreover, the application of the finite element simulation method in characterizing stress was reviewed. Finally, the possible future research direction was proposed.

Key words: electrical penetration assembly, glass-metal sealing, compressive stress, stress measurement

中图分类号:

TL349

向恒, 郑睿鹏, 李靖威. 面向核电的玻璃-金属密封型电气贯穿件应力检测方法研究进展[J]. 硅酸盐通报, 2022, 41(11): 4056-4066.

XIANG Heng, ZHENG Ruipeng, LI Jingwei. Research Progress of Stress Detection Methods for Glass-Metal Sealed Electrical Penetration Assembly in Nuclear Power System[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(11): 4056-4066.

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