| 长直管束通电加热吸合现象的研究 |
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| 引用本文： | 陈凤,郭强,贾海军.长直管束通电加热吸合现象的研究[J].工程热物理学报,2009,30(12). |
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| 作者姓名： | 陈凤 郭强 贾海军 |
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| 作者单位： | 清华大学核能与新能源技术研究院,北京,100084 |
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| 摘 要： | 利用一组 3×3 的长直不锈钢管束通电加热液态水.实验结果表明:当通电电压升高到一定值时,管间产生吸合效应,导致管束发生短接.本文主要从热应力效应和磁场力效应这两方面因素及其相互关系分析了长直通电加热管束产生吸合现象的原因,该研究有利于发热式管壁直接加热器的研制.
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| 关 键 词： | 加热管束 吸合作用 热应力效应 磁场力效应 |
PULL-IN PHENOMENON OF LONG STRAIGHT TUBE BUNDLE WITH OHMIC HEATING |
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| CHEN Feng,GUO Qiang,JIA Hai-Jun.PULL-IN PHENOMENON OF LONG STRAIGHT TUBE BUNDLE WITH OHMIC HEATING[J].Journal of Engineering Thermophysics,2009,30(12). |
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| Authors: | CHEN Feng GUO Qiang JIA Hai-Jun |
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| Institution: | CHEN Feng GUO Qiang JIA Hai-Jun (Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing 100084,China) |
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| Abstract: | A 3×3 array of a long straight tube bundle of stainless steel is electrified to heat liquid water. Experimental results show that as voltage is increased to a certain value, pull-in action among tube bundle emerged, which results in short circuit current between tube bundles. In this paper, both thermal stress effect and magnetic field stress effect are studied and pull-in action among the long straight tube bundle with ohmic heating is analyzed. The research is beneficial to manufactures of tube wall heaters with direct ohmic heating. |
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| Keywords: | heated tube bundle pull-in action thermal stress effect magnetic field stress effect |
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