| 摘要 |
PROBLEM TO BE SOLVED: To make a front plate into one which has enough strength without increasing the thickness so as to materialize weight reduction and material cost reduction, by forming the front plate of a gas sealing container into the shape of a curved face curved outward into convex form. SOLUTION: At the front board 21a of the front tank 21 of a gas sealing container, three pieces of apparatus insertion holes 21b for inserting the main circuit unit of a VCB disconnector are bored, and around each apparatus insertion hole 21b, mounting flanges 21c being made higher than other face, at the external surface, are provided to surround the apparatus insertion holes 21b. Then, the top of the mounting flange 21c is shaved to be flat, and an operation part mounting face 21d is made, and a sealing plate 22 is attached. Here, the inner face of the front plate 21a of the front tank 21 is made into the curved face curved at a specified curvature. Hereby, the front plate 21a of the front plate 21a is made into one which has necessary strength without increasing the thickness, and the weight reduction and the reduction of material cost can be materialized. |
