| 摘要 |
PROBLEM TO BE SOLVED: To sustain an oxide superconducting coil stably at a constant temperature by feeding liquid oxygen into the coil housing and then reducing the pressure through a pressure reduction pump thereby cooling the coil down to the triple point of oxygen. SOLUTION: The cooling system for superconducting coil comprises an oxide superconductor 6, a coil housing 1, and a pressure reduction pump 2. Liquid oxygen 7 is then fed through an upper supply port 5 under the atmospheric pressure of about 1atm and then the cover is closed. Subsequently, a valve 4 is opened and communicated with the pressure reduction pump 2 which regulates the inner pressure and controls the temperature in the range of 90-54.4K. Consequently, the coil can be cooled down to the triple point of oxygen (about 54.4K) and sustained stably at a constant temperature level. With such a method, application of oxygen superconductor can be widened. |
