Switchgear enclosure with interconnected exhaust system

Patent metadata

Field	Value
Publication number	US-10014668-B2
Application number	US-201715435263-A
Country	US
Kind code	B2
Filing date	Feb 16, 2017
Priority date	Mar 7, 2016
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

A switchgear enclosure is provided. The switchgear enclosure includes a plurality of switchgear panels and a plurality of ducts extending through the switchgear panels. Each switchgear panel includes an exterior housing, a busbar compartment defined within the exterior housing, and an exhaust system. The busbar compartment surrounds a busbar extending through the switchgear panel. The exhaust system includes a vent path structure configured within the exterior housing to at least partially surround the busbar compartment, a first channel defined between the vent path structure and the exterior housing, and a first vent opening formed on the vent path structure. The first vent opening directs arc gases within said busbar compartment to the first channel. The ducts are in fluid communication with the first channels of the switchgear panels to distribute arc gases between the first channels.

First claim

What is claimed is:

1. A switchgear enclosure comprising a plurality of switchgear panels and a plurality of ducts extending through said plurality of switchgear panels, each switchgear panel of said plurality of switchgear panels comprising:
an exterior housing;
a busbar compartment defined within said exterior housing and surrounding a busbar extending through said switchgear panel; and
an exhaust system comprising:
a vent path structure positioned within said exterior housing to at least partially surround said busbar compartment;
a first channel defined between said vent path structure and said exterior housing; and
a first vent opening formed on said vent path structure between said busbar compartment and said first channel, said first vent opening providing fluid communication between said busbar compartment and said first channel to direct arc gases within said busbar compartment to said first channel,

wherein the plurality of ducts are in fluid communication with said first channels of said plurality of switchgear panels to distribute arc gases between said first channels of said plurality of switchgear panels.

2. The switchgear enclosure of claim 1 , wherein said switchgear enclosure further comprises a gas duct in fluid communication with said first channels of said plurality of switchgear panels and an enclosure exhaust, said gas duct providing fluid communication between said first channels and said enclosure exhaust to direct the arc gases from said first channel to said enclosure exhaust.

3. The switchgear enclosure of claim 2 , further comprising a flap for said each switchgear panel, said flap positioned between said first channel and said gas duct, wherein said flap is selectively moveable to provide fluid communication between said first channel and said gas duct.

4. The switchgear enclosure of claim 1 , wherein said first vent opening further comprises a flap that is selectively moveable to provide fluid communication between said busbar compartment and said first channel.

5. The switchgear enclosure of claim 1 , wherein said exterior housing comprises a first wall and an opposing second wall, said vent path structure further comprising:
a first vent path side extending between said first wall and said busbar compartment; and
a second vent path side extending between said second wall and said busbar compartment, wherein said plurality of ducts are coupled to each of said first vent path side and said second vent path side.

6. The switchgear enclosure of claim 1 , wherein each switchgear panel of said plurality of switchgear panels further comprises:
a breaker compartment defined with said exterior housing, said breaker compartment housing a circuit breaker; and
a second vent opening formed in said vent path structure between said breaker compartment and said first channel.

7. The switchgear enclosure of claim 6 , wherein each exhaust system further comprises:
a breaker vent path structure coupled to said exterior housing adjacent to said breaker compartment;
a breaker channel defined between said breaker vent path structure and said exterior housing, said breaker channel in fluid communication with said first channel; and
a breaker opening formed in said breaker vent path structure, said breaker opening providing fluid access from said breaker compartment to said breaker channel.

8. The switchgear enclosure of claim 7 , wherein a first duct of said plurality of ducts is in fluid communication with said breaker channels of said plurality of switchgear panels.

9. The switchgear enclosure of claim 1 , wherein each switchgear panel of said plurality of switchgear panels further comprises:
a cable compartment defined with said exterior housing; and
a second vent opening formed in said vent path structure between said breaker compartment and said first channel.

10. An exhaust system for a switchgear enclosure including a plurality of switchgear panels, said exhaust system comprising:
a plurality of vent path structures, each vent path structure of said plurality of vent path structures positioned within an exterior housing of one switchgear panel of the plurality of switchgear panels to at least partially surround a busbar compartment defined within the exterior housing;
a plurality of first channels, each first channel of said plurality of first channels defined between a respective vent path structure of said plurality of vent path structures and a respective exterior housing;
a plurality of first vent openings, each first vent opening of said plurality of first vent openings formed on said respective vent path structure between the busbar compartment and a respective first channel of said plurality of first channels, said first vent opening providing fluid communication between the busbar compartment and said first channel to direct arc gases within the busbar compartment to said first channel; and
a plurality of ducts extending through the plurality of switchgear panels, the plurality of ducts in fluid communication with said plurality of first channels to distribute arc gases between said plurality of first channels of said plurality of switch gear panels.

11. The exhaust system of claim 10 , further comprising a gas duct in fluid communication with said plurality of first channels and an enclosure exhaust, said gas duct providing fluid communication between said plurality of first channels and said enclosure exhaust to direct the arc gases from said plurality of first channels to said enclosure exhaust.

12. The exhaust system of claim 11 , further comprising a flap for each switchgear panel, said flap positioned between said respective first channel of said plurality of first channels and said gas duct, wherein said flap is selectively moveable to provide fluid communication between said respective first channel and said gas duct.

13. The exhaust system of claim 10 , wherein each first vent opening of said plurality of first vent openings further includes a flap that is selectively moveable to provide fluid communication between the busbar compartment and said respective first channel.

14. The exhaust system of claim 10 , wherein the exterior housing includes a first wall and an opposing second wall, each vent path structure of said plurality of vent path structures further comprising:
a first vent path side extending between the first wall and the busbar compartment; and
a second vent path side extending between the second wall and the busbar compartment, wherein said plurality of ducts are coupled to each of said first vent path side and said second vent path side.

15. The exhaust system of claim 10 , wherein each vent path structure of said plurality of vent path structures further comprises a second vent opening formed in said vent path structure between a breaker compartment defined within the exterior housing and said respective first channel.

16. The exhaust system of claim 15 , further comprising:
a plurality of breaker vent path structures, each breaker vent path structure of said plurality of breaker vent path structures coupled to the exterior housing of a respective switchgear panel adjacent to the breaker compartment;
a plurality of breaker channels defined between said plurality of breaker vent path structures and the exterior housings of the plurality of switchgear panels, each breaker channel of said plurality of breaker channels in fluid communication with at least one first channel of said plurality of first channels; and
a plurality of breaker openings formed in said plurality of breaker vent path structures, said plurality of breake

Assignees

• Gen Electric

Inventors

• Rajauria Samir
• Meiners Steven Edward
• Wu Hao
• Jakkireddy Ayyappa Reddy
• Kurra Guru Moorthy

Classifications

• H02B13/005

  Electrical connection between switchgear cells · CPC title

• H02B1/565 Primary

  for cabinets · CPC title

• H02B1/26 Primary

  Casings; Parts thereof or accessories therefor · CPC title

• H02B5/06

  gas-insulated · CPC title

• H02B13/025 Primary

  Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect · CPC title