| 核电池热功率测量装置校准用标准热源设计 |
| Design of Standard Heat Source for Calibration of Nuclear Battery Thermal Power Measurement Device |
| |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
| 中文摘要: |
| 核电池在空间探测、核工业等领域应用十分广泛，由于核电池结构和材料的特殊性，多采用基于等效热功率的方法对其进行功率测量。目前我国用于对核电池热功率测量装置进行计量的热功率标准装置存在准确度较低、稳定性较差的问题，为解决此问题，本文研制了一套标准热源装置，该装置由高精度恒流源、标准电阻、发热体、八位半数字多用表等部分组成，利用电流的焦耳效应将电能转化为热能。经试验证明，该装置在电流小于等于3 A的范围内，能够产生0.7~147 W的功率，相对扩展不确定度不大于2×10-3(k=2)，为保障核电池热功率准确溯源起到了重要作用。 |
| 英文摘要: |
| Nuclear batteries were widely used in space exploration, nuclear industry and other fields. Because of the particularity of nuclear battery structure and materials, methods based on equivalent thermal power were often used when measuring their power. At present, the thermal power standard device used for measuring the nuclear battery thermal power measurement device in our country had the problems of low accuracy and poor stability. In order to solve the problems, this paper developed a set of standard heat source device. It consisted of a high-precision constant current source, a standard resistance, a standard heat source, an eight-and-a-half-digit digital multimeter, etc., which was based on the Joule effect of current and the principle of converting electrical energy into heat energy. It had been verified by experiments that in the range of current less than 3A, 0.7~147 W of power can be generated, and the relative expanded uncertainty was equal or less than 2×10-3 (k=2). It played an important role in ensuring the accurate traceability of the thermal power of nuclear batteries. |
|
| 中文关键词: 核电池热功率 电阻 稳定性 不确定度 |
| 英文关键词:Nuclear battery power resistance stability uncertainty |
| 基金项目: |
| DOI：10.11823/j.issn.1674-5795.2021.06.05 |
| 引用本文：高祎1，寇琼月2，张灏1，唐亚曼1.核电池热功率测量装置校准用标准热源设计[J].计测技术,2021,(6):. |
| 关闭 |
