Gas-insulated switch

Patent metadata

Field	Value
Publication number	US-11676785-B2
Application number	US-201917259653-A
Country	US
Kind code	B2
Filing date	Jul 8, 2019
Priority date	Jul 12, 2018
Publication date	Jun 13, 2023
Grant date	Jun 13, 2023

Abstract

A gas-insulated switch has a first contact and a second contact. A contact unit is connected to the first contact as a movement contact unit having a drive unit and is movably mounted along a switch axis. The gas-insulated switch further has a multi-part insulation nozzle system with a primary nozzle and an auxiliary nozzle. A heating channel is formed between the primary nozzle and the auxiliary nozzle. The heating channel originates from an electric arc chamber and opens in a gas reservoir, wherein the gas reservoir is delimited by a ram. The gas reservoir is radially delimited by a wall, in respect of the switch axis, which is not a component of the movement contact unit, and the ram is part of the movement contact unit and is movably mounted such that the ram moves along the switch axis away from the second contact to enlarge the gas reservoir.

First claim

The invention claimed is:

1. A gas-insulated switch, comprising:
a first contact unit having a first contact and second contact unit having a second contact;
said first contact and said first contact unit being a movement contact unit connected to a drive unit and is movably mounted along a switch axis;
a gas reservoir;
a ram, said gas reservoir being delimited on one side by said ram;
a multipart insulation nozzle system having a primary nozzle, an auxiliary nozzle, and an electric arc chamber, said primary nozzle and said auxiliary nozzle defining a heating channel formed between said primary nozzle and said auxiliary nozzle, said heating channel originating from said electric arc chamber and opening in said gas reservoir;

said auxiliary nozzle having a mounting and said ram being attached to said mounting of said auxiliary nozzle; and
a wall, said gas reservoir being radially delimited by said wall, at least in part, in respect of the switch axis, wherein said movement contact unit in respect of said wall is movably mounted along the switch axis and in that said ram is part of said movement contact unit and is movably mounted together with said movement contact unit in respect of said second contact in such a way that said ram during an opening process of said first and second contact units moves along the switch axis away from said second contact in order to enlarge said gas reservoir.

2. The gas-insulated switch according to claim 1 , wherein said wall delimiting, at least partially, said gas reservoir is a constituent part of said second contact unit.

3. The gas-insulated switch according to claim 1 , wherein said ram is aligned substantially vertically in respect of the switch axis.

4. The gas-insulated switch according to claim 1 , wherein said ram, in respect of the switch axis, is configured rotation-symmetrically.

5. The gas-insulated switch according to claim 1 , wherein said first contact is a tulip contact and said second contact is a pin contact.

6. The gas-insulated switch according to claim 1 , wherein said wall is part of said primary nozzle.

7. A high voltage switching configuration, comprising:
a gas-insulated switch, containing:

a first contact unit having a first contact and second contact unit having a second contact;
said first contact and said first contact unit being a movement contact unit connected to a drive unit and is movably mounted along a switch axis;
a gas reservoir; a ram, said gas reservoir being delimited on one side by said ram; a multipart insulation nozzle system having a primary nozzle, an auxiliary nozzle, and an electric arc chamber, said primary nozzle and said auxiliary nozzle defining a heating channel formed between said primary nozzle and said auxiliary nozzle, said heating channel originating from said electric arc chamber and opening in said gas reservoir;

said auxiliary nozzle having a mounting and said ram being attached to said mounting of said auxiliary nozzle; and
a wall, said gas reservoir being radially delimited by said wall, at least in part, in respect of the switch axis, wherein said movement contact unit in respect of said wall is movably mounted along the switch axis and in that said ram is part of said movement contact unit and is movably mounted together with said movement contact unit in respect of said second contact in such a way that said ram during an opening process of said first and second contact units moves along the switch axis away from said second contact in order to enlarge said gas reservoir; and
at least one vacuum switching tube, wherein said gas-insulated switch and said vacuum switching tube are connected in series.

8. The high voltage switching configuration according to claim 7 , further comprising a control device for dividing a voltage between said gas-insulated switch and said vacuum switching tube.

Assignees

• Siemens Energy Global Gmbh & Co Kg

Inventors

• Mladenovic Ivana
• Nikolic Paul Gregor

Classifications

• H01H33/905

  the compression volume being formed by a movable cylinder and a semi-mobile piston · CPC title

• H01H33/901 Primary

  making use of the energy of the arc or an auxiliary arc · CPC title

• H01H33/7023

  characterised by an insulating tubular gas flow enhancing nozzle (H01H33/7038 takes precedence) · CPC title

• H01H33/91 Primary

  the arc-extinguishing fluid being air or gas · CPC title

• H01H33/703

  having special gas flow directing elements, e.g. grooves, extensions · CPC title