Seal apparatus for circuit breaker application

• US 7,952,042 B2
• Filed: 09/25/2008
• Issued: 05/31/2011
• Est. Priority Date: 09/25/2008
• Status: Active Grant

• Current Assignee: Eaton Intelligent Power Limited (Eaton Corporation PLC.)
• Original Assignee: Eaton Corp. (Wisconsin) (Eaton Corporation PLC.)
• Inventors: Coomer, Jarrod Lyle, Moore, Stanley Ervin, Abrahamsen, Michael Howard, Metcalf, David Aaron, Fair, Timothy, Rowell, Amy Wilcox, Hrncir, Daniel Edward
• Primary Examiner(s): Friedhofer; Michael A
• Application Number:
  US12/237,501
• Publication Number:
  US 20100072039A1
• Time in Patent Office: 978 Days
• Field of Search: 200/302.1, 200/293, 200/400, 200 5021- 5027, 361605-621, 277/500, 277/510, 277/549, 277/309, 277/345, 277/346, 277/353, 277/650, 174/539
• US Class Current: 200/302.1
• CPC Class Codes: F16J 3/041 Non-metallic bellows
• CPC Class Codes: H02B 11/02 Details

Abstract

A seal apparatus is disposed between a switchgear cabinet and a circuit breaker between the racked and unracked positions of the circuit breaker. The seal apparatus sealingly extends between the switchgear cabinet and the circuit breaker to resist fluid flow, such as exhaust gases and other matter, between an interior region of the switchgear cabinet and the exterior of the switchgear cabinet.

Claims

1. A seal apparatus structured for use with a switchgear cabinet and a circuit breaker that is movably disposed on the switchgear cabinet, the seal apparatus comprising:

a compressible seal body, at least a portion of which is structured to be moved along a direction of travel between a first position and a second position;

at least a portion of the seal body in the first position being in a compressed condition and being structured to sealingly extend between at least a portion of the switchgear cabinet and at least a portion of the circuit breaker to resist fluid flow between an interior region of the switchgear cabinet and an exterior region of the switchgear cabinet;

at least a portion of the seal body in the second position being disposed between at least a portion of the switchgear cabinet and at least a portion of the circuit breaker and being in at least one of a relaxed condition and a condition relatively less compressed than in the first position; and

the seal body having an opening formed therein that is structured to movably receive therein at least a portion of the circuit breaker in the first and second positions.

2. The seal apparatus of claim 1 wherein the seal body comprises a seal member and an attachment structure, the attachment structure being structured to be affixed to one of the switchgear cabinet and the circuit breaker.

3. The seal apparatus of claim 2 wherein the attachment structure is a flange that is oriented transverse to the direction of travel and is structured to be affixed to a movable door of the switchgear cabinet.

4. The seal apparatus of claim 2 wherein the seal member comprises at least a first corrugation that is in a condition at least partially collapsed in the first position.

5. The seal apparatus of claim 1 wherein the seal body in the first position is structured to sealingly engage a surface of the circuit breaker that is oriented transverse to the direction of travel.

6. The seal apparatus of claim 5 wherein the seal body in the first position is structured to be sealingly interposed between the surface of the circuit breaker and a surface of the switchgear cabinet that is oriented transverse to the direction of travel.

7. The seal apparatus of claim 1 wherein the seal body in the first position is structured to be sealingly engaged with at least one of a surface of the circuit breaker that is oriented transverse to the direction of travel and a surface of the switchgear cabinet that is oriented transverse to the direction of travel, the seal body in the second position being in a relaxed condition and being structured to be spaced from the at least one of a surface of the circuit breaker and a surface of the switchgear cabinet.

8. The seal apparatus of claim 1 wherein in the second position the height of the seal apparatus in the direction of travel is a plurality of times the height of the seal apparatus in the direction of travel in the first position.

9. A switchgear apparatus comprising:

a switchgear cabinet;

a circuit breaker disposed on the switchgear cabinet and movable along a direction of travel between an unracked position and a racked position; and

a seal apparatus that comprises a compressible seal body;

at least a portion of the seal body being movable along the direction of travel between a first position and a second position, the seal body being in the first position when the circuit breaker is in the unracked position, the seal body being in the second position when the circuit breaker is in the racked position;

at least a portion of the seal body in the first position being in a compressed condition sealingly extending between at least a portion of the switchgear cabinet and at least a portion of the circuit breaker and being structured to resist fluid flow between an interior region of the switchgear cabinet and an exterior region of the switchgear cabinet;

at least a portion of the seal body in the second position being disposed between at least a portion of the switchgear cabinet and at least a portion of the circuit breaker and being in at least one of a relaxed condition and a condition relatively less compressed than in the first position; and

the seal body having an opening formed therein;

at least a portion of the circuit breaker being disposed in the opening in the first and second positions.

10. The switchgear apparatus of claim 9 wherein the seal body comprises a seal member and an attachment structure, the attachment structure being affixed to one of the switchgear cabinet and the circuit breaker.

11. The switchgear apparatus of claim 10 wherein the switchgear cabinet comprises a door that is movable between an open position and a closed position, the attachment structure being a flange that is affixed to the door and is oriented transverse to the direction of travel when the door is in the closed position.

12. The switchgear apparatus of claim 10 wherein the seal member comprises at least a first corrugation that is in a condition at least partially collapsed in the first position.

13. The switchgear apparatus of claim 9 wherein the circuit breaker comprises a surface that is oriented transverse to the direction of travel, the seal body in the first position being sealingly engaged with the surface of the circuit breaker.

14. The switchgear apparatus of claim 13 wherein the switchgear cabinet comprises a surface that is oriented transverse to the direction of travel, the seal body in the first position being sealingly interposed between the surface of the circuit breaker and the surface of the switchgear cabinet.

15. The switchgear apparatus of claim 9 wherein the circuit breaker comprises a surface that is oriented transverse to the direction of travel and wherein the switchgear cabinet comprises a surface that is oriented transverse to the direction of travel, the seal body in the first position being sealingly engaged with at least one of the surface of the circuit breaker and the surface of the switchgear cabinet, the seal body in the second position being in a relaxed condition and being spaced from the at least one of the surface of the circuit breaker and the surface of the switchgear cabinet.

16. The switchgear apparatus of claim 9 wherein in the second position the height of the seal apparatus in the direction of travel is a plurality of times the height of the seal apparatus in the direction of travel in the first position.