| 摘要 |
PROBLEM TO BE SOLVED: To provide an installation equipment capable of largely improving workability, and stabilizing and improving a product insulation characteristic in sealing of filling articles such as oil and gas which are used for insulation in electric power installation equipment, capable of minimizing or completely eliminating the amount of usage of solder used for sealing of the filling article, and coping with a lead-free environmental problem. SOLUTION: A nut part in which a tapered part having a slightly larger diameter than a screw diameter is provided in the screw end is mounted on a container for sealing the filling article and has a through hole penetrating through from a screw outer peripheral face and the inside part to either one side of a circular cross section face, a bolt which is provided with a nut contact part slightly larger then the screw diameter on the other side circular cross section side having no through hole is screwed with the nut, and this device is sealed by fusing and solidifying the solder stored in the taper part. |
