摘要
本文基于热声效应原理设计出一种新型的测温装置,用于弥补现今核反应堆内以热电偶等方式测温缺乏非能动特性的不足,可以提高在严苛环境下仪表测量的可靠性和安全性本文利用DeltaEC热声计算软件对设计的热声测温装置各个组件尺寸进行了优化,目标是使得各个组件组成的系统性能最佳,即在同等工作条件下装置内气体震荡幅度最高。经过优化后,通过改变热端温度找到了热端温度与装置内声波频率的对应关系,近似为一条一次函数直线,因此新型的测温装置可以有效地实现非能动测量。
A new temperature measuring device based on thermoacoustic effect is designed to make up for the absence of passive temperature measuring device in the field of nuclear reactor, which is usually measured by thermocouples. The new device can improve the reliability and security of instrumentation, especially in harsh environment. By using the Delta EC thermoacoustic software, the sizes of each modules of the thermoacoustic temperature measuring device are optimized to achieve the best performance of the system composed of independent modules, which means that the oscillation amplitude of the gas inside the device is much higher compared with others in the same working conditions. By changing the hot end temperature, it is found that after optimization, there is a corresponding relationship between the frequency of sound wave inside the device and the hot end temperature, which is similar to linear function. Therefore, the new temperature measuring device can effectively realize the passive measurement.
出处
《核安全》
2015年第4期24-29,共6页
Nuclear Safety
基金
国家自然科学基金
项目编号11372092
关键词
热声效应
非能动
核安全
thermoacoustic effect
passive nuclear safety
