| 摘要 |
<p>PURPOSE:To improve the heat insulation performance by forming a connecting pipeline in a double cylinder hollow seal structure and filling activated carbon and carbon dioxide or argon gas in the hollow seal. CONSTITUTION:The inner pipe 10 and the outer pipe 11 of a connecting pipeline 1b are made of stainless steel respectively, the inner pipe 10 and the outer pipe 11 are formed with nearly concentric double cylinders, nd they are formed in a sealed hollow structure closed on both ends. Carbon dioxide (CO2) and activated carbon 13 are sealed in a sealed hollow 12. When low-temperature liquid helium 4 flows in the connecting pipeline 1b, the carbon dioxide in the connecting pipeline 1b is solidified, the pressure in a container sealed with the gas is made very small, thus a vacuum heat insulating effect is obtained.</p> |
