Pole part for high pressure environment application

Patent metadata

Field	Value
Publication number	US-10049840-B2
Application number	US-201715455219-A
Country	US
Kind code	B2
Filing date	Mar 10, 2017
Priority date	Sep 12, 2014
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

A pole part for high pressure environment application, with a pressure resistant insulating housing in which a vacuum interrupter is installed, wherein the vacuum interrupter is provided with at least one moving contact and one fixed contact inside the vacuum interrupter. In order to create a pole part able to withstand high environmental pressure, a pressure resistant insulating body can be tubelike and at its ends provided with flanges formed at the insulating housing out of the same material, and that at least one of the flanges is closed with a metal cap, which is adapted to the aforesaid flange of the insulating housing by the same dimensions, and that with clamp the metal cap is pressed tightly on the flange of the insulating housing by the introduced clamping fixation force.

First claim

The invention claimed is:

1. A pole part for high pressure environment application, the part comprising:
a pressure resistant insulating housing in which a vacuum interrupter is installed, the pressure resistant insulating housing having ends,
wherein the vacuum interrupter includes a moving contact and a fixed contact inside the vacuum interrupter,
wherein the pressure resistant insulating housing is tube-shaped and at its ends includes flanges formed on the insulating housing out of a same material,
wherein at least one of the flanges, a first flange, is closed with a metal cap,
wherein the metal cap is adapted to fit the first flange of the insulating housing,
wherein, using a clamp comprising a two part clamp ring with a first part and a second part, the metal cap is pressed tightly on the first flange of the insulating housing by an introduced clamping fixation force,
wherein circumferential profiles of the first flange and the cap are shaped such that a first flange thickness and a cap thickness decrease towards a flange end and a cap end, and
wherein an inner surface of the clamp is formed complementarily to the circumferential profiles of the flange and the cap such that, by reduction of a resulting diameter of the two part clamp ring, an increase of the fixation force is introduced.

2. The part of claim 1 , wherein the clamp is configured to cause the clamping fixation force to be diverted into an axial force pressing the flange and the cap tightly together.

3. The part of claim 1 , wherein the insulating housing includes a ceramic material.

4. The part of claim 1 , wherein the insulating housing is segmented into axial segments, which are fixed tightly together by the flanges with circumferential profiles and the clamp.

5. The part of claim 4 , wherein the insulating housing includes a ceramic.

6. The part of claim 1 , wherein on a side at which a moving stem of the moving contact extends out of the vacuum interrupter, connected with a pushrod, the insulating housing is divided into two axial segments, and
wherein, between the two axial segments, a fixed contact ring of a sliding contact including electrically conductive material is arranged, so as to electrically connect the moving contact of the vacuum interrupter with the fixed contact ring via the sliding contact.

7. The part of claim 6 , wherein the fixed contact ring includes an integral ring having a diameter, the integral ring extending in its diameter through the insulating housing arrangement such that it can be externally connected electrically.

8. The part of claim 1 , wherein an inner space of the housing, at least along a length of the vacuum interrupter, is filled with potting material.

9. The part of claim 1 , wherein the vacuum interrupter, at a side having the fixed contact, includes a bolt, and
wherein the bolt is carried in an integral stud hole in the metal cap.

10. The part of claim 1 , further comprising:
elastic sealing rings, arranged between the flanges and between the first flange and the metal cap,
wherein the elastic sealing rings are positioned in sealing grooves in the flanges and/or in the housing surface in an area which comes into mechanical contact with the cap or the contact ring.

11. The part of claim 1 , wherein the insulating housing is covered with a rubber coating.

12. The part of claim 1 , configured for medium voltage use.

13. The part of claim 1 , configured for low- or high-voltage use.

14. The part of claim 1 , configured for submarine use.

15. The part of claim 1 , wherein the vacuum interrupter includes only one fixed contact.

16. The part of claim 1 , wherein the insulating housing includes a porcelain material.

17. A pole part for high pressure environment application, the part comprising:
a pressure resistant insulating housing in which a vacuum interrupter is installed, the pressure resistant insulating housing having ends,
wherein the vacuum interrupter includes a moving contact and a fixed contact inside the vacuum interrupter,
wherein the pressure resistant insulating housing is tube-shaped and at its ends includes flanges formed on the insulating housing out of a same material,
wherein at least one of the flanges, a first flange, is closed with a metal cap,
wherein the metal cap is adapted to fit the first flange of the insulating housing,
wherein, using a clamp, the metal cap is pressed tightly on the first flange of the insulating housing by an introduced clamping fixation force,
wherein the first flange and the metal cap include circumferential profiles such that the clamp, including a clamp ring including a first part and a second part, causes the clamping fixation force to be diverted into an axial force pressing the flange and the cap tightly together,
wherein the circumferential profiles of the first flange and the cap are shaped such that a first flange thickness and a cap thickness decrease towards a flange end and a cap end, and
wherein an inner surface of the clamp is formed complementarily to the circumferential profiles of the flange and the cap such that, by reduction of a resulting diameter of a two part clamp ring, an increase of the fixation force is introduced.

18. A pole part for high pressure environment application, the part comprising:
a pressure resistant insulating housing in which a vacuum interrupter is installed, the pressure resistant insulating housing having ends,
wherein the vacuum interrupter includes a moving contact and a fixed contact inside the vacuum interrupter,
wherein the pressure resistant insulating housing is tube-shaped and at its ends includes flanges formed on the insulating housing out of a same material,
wherein at least one of the flanges, a first flange, is closed with a metal cap,
wherein the metal cap is adapted to fit the first flange of the insulating housing,
wherein, using a clamp, the metal cap is pressed tightly on the first flange of the insulating housing by an introduced clamping fixation force,
wherein on a side at which a moving stem of the moving contact extends out of the vacuum interrupter, connected with a pushrod, the insulating housing is divided into two axial segments, and
wherein, between the two axial segments, a fixed contact ring of a sliding contact including electrically conductive material is arranged, so as to electrically connect the moving contact of the vacuum interrupter with the fixed contact ring via the sliding contact.

19. The part of claim 18 , wherein the fixed contact ring includes an integral ring having a diameter, the integral ring extending in its diameter through the insulating housing arrangement such that it can be externally connected electrically.

Assignees

• Abb Schweiz Ag

Inventors

• Gentsch Dietmar
• Thevar Dukkaiappan Subbiah

Classifications

• H01H2033/6623

  Details relating to the encasing or the outside layers of the vacuum switch housings · CPC title

• H01H33/66207 Primary

  Specific housing details, e.g. sealing, soldering or brazing · CPC title

• H01H33/664

  Contacts; Arc-extinguishing means, e.g. arcing rings · CPC title

• H01H2033/66223

  Details relating to the sealing of vacuum switch housings · CPC title

• H01H33/6606 Primary

  Terminal arrangements · CPC title