| 摘要 |
PURPOSE:To see that a superconductive magnet does not quench (breakage of a superconductive condition) by preventing the liquid helium inside a liquid helium tank for a magnetically levitating train from evaporating by the temperature rise by the heating caused by vibration. CONSTITUTION:Liquid helium level or a liquid helium tank 4 itself is prevented from vibrating itself by annexing one, which has a function to suppress the vibration of the liquid level of the liquid helium 9, to the liquid helium tank 4. For a vibration suppressing mechanism, one sheet or plural sheets of damping plates 10, which are supported with a spring 11, are installed inside the tank 4. Hereby, the liquid level of the liquid helium ceases to vibrate, and the liquid helium ceases to evaporate, so a superconductive magnet can be maintained at ultralow temperature, and the quenching of the superconductive magnet is lightened. |
