| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a gas-insulation apparatus which is small-sized and light-weight and has a high breakdown voltage property and excellent dimensional accuracy and strength of a flange section.SOLUTION: A shank section 1a of a pressure vessel 1 is formed from fiber-reinforced plastic and a flange section 3 of the pressure vessel 1 is constituted of an inner-diameter side flange section 1b formed from fiber-reinforced plastic integrally with the shank section 1a and an annular outer-diameter side flange section 2 which is fitted onto an outer-peripheral surface of the inner-diameter flange section 1b, formed from a metal member and provided with a fastening member. Between the inner-diameter flange section 1b and an insulation spacer 21, an O-ring 5 is provided to air-tightly seal the inside of the pressure vessel 1.</p> |
