Ngk Insulators, Inc.

Ngk Instulators, Ltd.

Yasunori Matsuura

Akihiro Watanabe

Nagahiro Kawano

Keiichi Asai

Masafumi Sugi

Tsutomu Moriya

Takao Nakamura

An explosion-proof porcelain housing for use in a gas-filled insulating apparatus, comprising a porcelain housing body, and a first and second films. The first film is made of a first insulating material having low hardness and high elasticity, and is bonded to an inner surface of the porcelain housing body. The second film is made of a second insulating material having high hardness and high mechanical strength, and is bonded to an inner surface of the first film. A process for producing such an explosion-proof porcelain housing is also disclosed.

Explosion-proof porcelain housings for gas-filled insulating apparatuses

In a method of lining resins on an inner surface of a porcelain housing, the porcelain housing having a tapered shape is rotated about a rotation axis in such a manner that the rotation axis of a side having a larger inner diameter is inclined upward with respect to a horizontal line, and an inclination angle and/or a rotation number are controlled in accordance with an inner diameter of the porcelain housing corresponding to a nozzle position, and resins are sprayed or flowed on the inner surface of the porcelain housing from a nozzle during rotations of the porcelain housing.

Method of lining resins on an inner surface of a tapered porcelain

A hollow porcelain insulator including an elastic insulating layer having a tensile strength of at least 150 kg/cm.sup.2 and a thickness of at least 2 mm for improving an explosion preventing property.

Explosion preventing porcelain hollow insulator

Growing community of inventors

Kasugai, Japan

Yasunori Matsuura