Ceramic insulator

Patent metadata

Field	Value
Publication number	US-11760068-B2
Application number	US-201716301844-A
Country	US
Kind code	B2
Filing date	Apr 7, 2017
Priority date	May 19, 2016
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

Various embodiments include a method for producing a ceramic insulator for a high-voltage or medium-voltage switching system comprising: attaching a base material for an equipotential layer between two axially symmetrical ceramic structural elements; disposing the electrically conductive equipotential layer between the two ceramic structural elements; and joining the two ceramic structural elements to form a unitary body along a symmetry axis of a first of the two elements.

First claim

What is claimed is:

1. A method for producing a ceramic insulator for a high-voltage or medium-voltage switching system, the method comprising:
placing axially symmetrical green ceramic structural elements 14 / 18 end-to-end along a shared longitudinal axis into a press mold 16 ;
disposing a base material 12 for an equipotential layer 10 between each respective set of two axially symmetrical green ceramic structural elements 14 / 18 by filling a ceramic base material and equipotential layers in an alternating manner into a press mold;
pressing the green ceramic structural elements 14 / 18 and the base material for the equipotential layers 10 together to form a multi-layered green body; and
sintering the multi-layered green body to create a monolithic ceramic insulator;
wherein each equipotential layer between a respective set of two axially symmetrical ceramic structural elements electrically subdivides the two axially symmetrical ceramic structural elements.

2. The method as claimed in claim 1 , wherein the base material for the equipotential layer comprises at least one of the materials chosen from the group consisting of: a metal foil, a metal powder, a metallic woven fabric, a conductive ceramic, and an electrically conductive glass-forming material.

3. The method as claimed in claim 1 , further comprising incorporating the base material for the equipotential layer between two green bodies of the ceramic structural elements.

4. The method as claimed in claim 3 , wherein incorporating the base material for the equipotential layer includes a process selected from the group consisting of: dip coating, a thermal spray coat, chemical or physical deposition method, and applying a foil.

5. The method as claimed in claim 1 , wherein incorporating the base material for the equipotential layer includes filling into a press mold.

6. The method as claimed in claim 1 , wherein a height of the two ceramic structural elements along the symmetry axis is between 5 mm and 50 mm.

7. A method for producing a ceramic insulator for a high-voltage or medium-voltage switching system, the method comprising:
placing axially symmetrical green ceramic structural elements end-to-end along a shared longitudinal axis into a press mold;
disposing a base material for an equipotential layer between each respective set of two axially symmetrical green ceramic structural elements by filling a ceramic base material and equipotential layers in an alternating manner into a press mold, wherein the base material for the equipotential layer comprises a metal powder;
pressing the green ceramic structural elements and the base material for the equipotential layers together to form a multi-layered green body; and
sintering the multi-layered green body to create a monolithic ceramic insulator;
wherein each equipotential layer between a respective set of two axially symmetrical ceramic structural elements electrically subdivides the two axially symmetrical ceramic structural elements.

Assignees

• Siemens Energy Global Gmbh & Co Kg

Inventors

• Benkert Katrin
• Hartmann Werner
• Koletzko Martin
• Kosse Sylvio
• Lang Steffen
• Rettenmaier Thomas
• Wenzel Norbert

Classifications

• B32B18/00 Primary

  Layered products essentially comprising ceramics, e.g. refractory products · CPC title

• H01B19/00 Primary

  Apparatus or processes specially adapted for manufacturing insulators or insulating bodies {(manufacture of porcelain for electric insulation C04B33/26)} · CPC title

• C04B2237/12

  Metallic interlayers · CPC title

• H01B3/12

  ceramics · CPC title

• C04B2237/78

  Side-way connecting, e.g. connecting two plates through their sides · CPC title