| 摘要 |
<p>PURPOSE:To limit the mounting surface, facilitate assembly and to prevent also gas leakage by making the external diameter of one side of an insulation part larger than the internal diameter of an opening part, in the case of a gas insulation spacer which is air-tightly mounted to the circular opening part formed in a partition of a gas insulation vessel and is projectingly provided with a disk-shaped mounting part in the peripheral center of the annular insulation part. CONSTITUTION:The external diameters of an insulation part 12 are different from each other on both sides and from the internal diameter of a through hole 10a of a mounting plate 10. That is, the external diameter on one side of an inserted surface 12c is smaller than the internal diameter of the through hole 10a, and the external diameter of a surface 12d on the other side not inserted, is larger than that. However, external diameter is smaller than the internal diameter of a retaining plate 15, and the insulation part, after the surface 12c is inserted, is tightened by the retaining plate 15. A mounting surface 12a, opposed to the mounting plate 10, of the insulation part 12 holds smoothness. Since the external diameter the side of the surface 12d, not inserted, of the insulation part is larger than the through hole 10a of the mounting plate, mounting from this surface 12d is made impossible. In this way, generation of gas leakage can be prevented by preventing mismounting and by holding the adhesion of the mounting surface 12a to the mounting plate 10.</p> |
