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多孔塞相分离器是空间远红外探测器冷却系统中的关键部件,可有效防止超流氦的泄漏,延长探测器的工作寿命。本史运用超流氦二流体模型和Hagen-Poiseuille定律等对多孔塞相分离器流量特性进行了理论分析,并针对不同厚度和渗透率的多孔塞进行了计算结果和实验结果的对比与分析。由此得到了通过多孔塞相分离器的质量流量随温差的变化规律,并对多孔塞渗透率、厚度和氦浴温度等因素对相分离器流量特性的影响进行了研究。
The porous plug phase separator is a key component in the space far infrared detector cooling system, which can effectively prevent the leakage of superfluid helium and extend the working life of the detector. In the history, the flow characteristics of porous plug phase separator were analyzed theoretically by using the superfluid helium two-fluid model and Hagen-Poiseuille law, and the calculation results and the experimental results were compared and analyzed for porous plugs with different thickness and permeability. The variation of mass flow rate with temperature difference through porous plug phase separator was obtained, and the influence of porous plug permeability, thickness and helium bath temperature on the flow characteristics of the phase separator was studied.