| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a dry air terminal connection part which adopts insulating structure of a dry tape, without using insulating oil and whose insulating performance is stabilized. SOLUTION: An evaporation pipe 8, through which an insulating gas can be permeated, is installed at the inside of an insulating pipe 5 into which an insulating gas is filled and which is maintained under a positive pressure. Consequently, the insulating gas inside the insulating pipe is always maintained under a positive pressure, and the insulating performance of this dry air terminal connection part is stabilized and ensured. It is preferable to install a plastic permeation plate at the evaporation pipe 8. As a plastic material, polyethylene, nylon, Teflon(R), silicone rubber, EPR or the like are suitable. A liquid, gaseous or solid insulating substance is filled into the evaporation pipe. In this case, when the liquid or solid insulating substance is used, it is made to pass through as a gasified insulating gas.</p> |
