Solid insulator and method of manufacturing the same

Details Solid insulator and method of manufacturing the same Solid insulator and method of manufacturing the same

H - Electricity

01

B

H01B 17/00 (2006.01) H01B 17/14 (2006.01) H01B 19/00 (2006.01) H01B 19/04 (2006.01)

Patent

CA 2124352

The present invention is directed to provide a high strength solid insulator, and a method of manufacturing the same. The solid insulator is made of cristobalite porcelain containing cristobalite crystals in an amount of less than 10%, in which internal strain in the direction of compression in a columnar insulator body is larger in the diametrically outer portion thereof than in the diametrically inner portion thereof, and the difference Y in internal strain between the outer peripheral portion and diametrically central portion of the insulator body is defined by Y ~ (1.76 x 10-6) X, wherein X (mm) represents the diameter of the insulator body. The method of manufacturing the solid insulator is characterized in that a sintered insulator body is quenched to increase the difference in internal strain between the inner and outer portions of the insulator body. 28

L'invention concerne un isolateur solide à haute résistance et un procédé permettant de le fabriquer. Cet isolateur solide a pour particularité d'être réalisé en une porcelaine où la quantité de cristaux de cristobalite ne dépasse pas 10 % et de présenter une contrainte interne, dans le sens de compression d'un isolateur colonnaire, plus grande dans la partie interne que dans la partie externe de son diamètre. La différence entre ces deux contraintes correspond à Y = (1,76 x 10-6)X, où X représente le diamètre en mm de l'isolateur. Un procédé, qui permet de fabriquer cet isolateur solide, consiste à procéder à la trempe d'un isolateur fritté pour accroître la différence existant entre la contrainte de la partie interne de l'isolation et celle de sa partie externe.

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