论文标题
一个可移动的温度传感器支架，用于低温雷利 - 贝纳德对流单元
A removable temperature sensors holder for cryogenic Rayleigh-Bénard convection cell
论文作者
论文摘要
已经开发了一个可移动的固定器，该可移动支架已经开发了我们的雷利 - 贝纳德对流圆柱电池内的微型温度传感器。传感器不应干扰我们工作流体的浮力湍流的温度和速度场 - 低温氦气（〜5 K）。直径和高度的300毫米的电池必须承受高达2.5 bar的超压，这就是为什么将其所有零件焊接在一起的原因。持有人由一对相同的进料通道（每个都有6个玻璃密封的销钉），康斯坦坦电线（0.1 mm），是青铜器弹簧和绝缘元件，并可以同时安装多达6个传感器，并可以选择更换受损的传感器。我们已经使用了两个这样的支架，并获得了局部温度及其波动的图，在细胞内部的12个位置。
A removable holder carrying a set of miniature temperature sensors inside our Rayleigh-Bénard convection cylindrical cell has been developed. The sensors should not disturb the temperature and velocity fields of the buoyancy-driven turbulent flow of our working fluid - cryogenic helium gas (~ 5 K). The cell, 300 mm both in diameter and height, must withstand the overpressure up to 2.5 bar, which is why all its parts are welded together. The holder consists of a pair of identical feedthroughs (each with 6 glass-sealed pins), constantan wires (0.1 mm), Be bronze springs and insulating elements and enables installing up to 6 sensors simultaneously, with the option to replace the damaged ones. We already used two such holders and obtained a map of local temperature and its fluctuations in 12 positions inside the cell.
