| 摘要 |
PROBLEM TO BE SOLVED: To provide a static superconducting device to be installed outdoors, of which the storage vessel is improved so as to reduce the equipment cost and improve maintainability of the device. SOLUTION: The static superconducting device having windings 2 and 3 of superconducting wires wound around an iron core 1 includes: an electrically and thermally insulated hermetic vessel 4 wherein the windings and a liquid coolant 5 for cooling the windings to a very low temperature are stored apart from the iron core 1; and a weather-resistant metallic vessel 8 wherein the thermally insulated vessel 4 and the iron core 1 are stored. An outside air inlet port 8a and an exhaust port 8b are opened in the metallic vessel 8 as ventilation ports for air introduction, and a space in the metallic vessel is opened to the atmosphere side through the ventilation ports to cool the iron core 1 by natural convection of outside air. The metallic vessel 8 includes a through bushing 6, and a hermetic wiring duct 9 is disposed between the through bushing and the thermally insulated vessel 4 having the windings stored therein to prevent leakage of cooling gas and then the through bushing and the windings are connected through the wiring duct by a current lead 7 made of a normally conducting conductor like copper. COPYRIGHT: (C)2010,JPO&INPIT |
