| 用电容探针测量铁磁介质
气固流化床的空隙率 |
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| 引用本文： | 归柯庭,颜生和.用电容探针测量铁磁介质
气固流化床的空隙率[J].传感技术学报,1995,8(4). |
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| 作者姓名： | 归柯庭 颜生和 |
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| 作者单位： | 东南大学动力工程系!南京210096(归柯庭)，华能南京电厂(颜生和) |
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| 摘 要： | 通过分析介质极化的微观机制,提出了消除外界电磁场对铁磁介质介电常数影响的方法,使电容法能应用于铁磁介质气固流化床空隙率的测量.介绍了提高电容探针测量灵敏度、稳定度的措施,并列举了测量实例.
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| 关 键 词： | 电容探针 铁磁介质 流化床 空隙率 |
Measurement of Local Void Fraction in a Magnetically Gas-solid Fluidized Bed with a Capacitance Probe |
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| Gui Keting Yan Shenhe.Measurement of Local Void Fraction in a Magnetically Gas-solid Fluidized Bed with a Capacitance Probe[J].Journal of Transduction Technology,1995,8(4). |
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| Authors: | Gui Keting Yan Shenhe |
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| Abstract: | Through analysing the micro-mechanism of dielectric's polarization, a methodto eliminate the influence of extra magnetic fields on the dielectric constant of ferromag-netic materials is proposed in this paper. Based on this method and an oscillator with thecompension circuit, a new capacitance probe, with high stability and sensitivity, is de-veloped. Finaly, an experimental research for measuring local void fraction in a magnet-ically gas-solid fluidized bed with the new capacitance probe is reported. |
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| Keywords: | capacitance probe ferromagnetic dielectric fluidized bedvoid fraction |
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