Abstract:
PROBLEM TO BE SOLVED: To provide a high voltage insulator having a low leaking speed. SOLUTION: The high voltage insulator H comprises a coaxial arrangement, an insulation tube 1 having end edge portions in a shape of a bearing ring 10, a hollow metal armature 2 supported by the bearing ring 10, an adhesive joint 51, and a cavity 15. At least one channel 50 for adhesive agent which is mainly guided in a diameter direction is arranged between the cavity 15 and the adhesive joint 51, and the channel 50 of the adhesive agent is sealed by a hardened adhesive agent and moreover has a cross section sufficient for guiding an unhardened adhesive agent from the cavity 15 into the adhesive joint 51 before formation of a hardened adhesive layer. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
A high-voltage insulator includes a metal armature, an insulating tube joined to the metal armature, which is adhesively bonded to the metal armature at an end formed as a supporting ring, and an axially symmetrical adhesive-bonding joint disposed around the axis of the insulating tube. An annular grove, which is formed in the metal armature, is disposed around the axis of the insulating tube and receives an end portion of the supporting ring. Sealing surfaces are respectively formed in the groove and in the supporting ring. The sealing surfaces are arranged and formed in such a way that, when the insulating tube and the metal armature are joined, they slide on one another, thereby forming a seal, and the supporting ring acting as a displacement body presses adhesive that has been introduced into the groove before the joining into the adhesive-bonding joint.