US2006220321A1PendingUtilityA1

Brush Seals

Individually held — no corporate assignee on recordPriority: Apr 1, 2005Filed: Mar 31, 2006Published: Oct 5, 2006

Est. expiryApr 1, 2025(expired)· nominal 20-yr term from priority

Inventors:Peter Francis Crudgington Aaron Bowsher

F16J 15/3288F01D 11/001F05D 2240/56

PatentIndex Score

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References

Claims

Abstract

A brush seal including a bristle pack mounted in a holder, and having a free end for sealing with a member, a front plate for lying on a high pressure side of the seal and extending part way along the length of the bristle pack to a free end being spaced from the bristle pack characterised in that the front plate is formed for or carries a formation for reducing the influence of swirling fluid on the high pressure side on the bristle pack.

Claims

exact text as granted — not AI-modified

1 . A brush seal including a bristle pack mounted in a holder, and having a free end for sealing with a member, a front plate for lying on a high pressure side of the seal and extending part way along the length of the bristle pack to a free end being spaced from the bristle pack characterised in that the front plate is formed for or carries a formation for reducing the influence of swirling fluid on the high pressure side on the bristle pack.  
   
   
       2 . A seal as claimed in  claim 1  wherein the free end of the front plate is thinned, chamfered or cut away on the side facing the bristle pack.  
   
   
       3 . A seal as claimed in  claim 1  wherein the front plate is perforated.  
   
   
       4 . A seal as claimed in  claim 1  wherein the formation is mounted on or is integral with the front plate.  
   
   
       5 . A seal as claimed in  claim 4  wherein the formation is in the form of a further front plate and defines with the existing front plate an intermediate chamber.  
   
   
       6 . A seal as claimed in  claim 5  wherein the intermediate chamber has a depth of between a quarter and three quarters of the length of the bristle pack.  
   
   
       7 . A seal as claimed in  claim 1  wherein the formation has a plurality of vanes deposed to inhibit flow generally at right angles to the longitudinal direction of the bristle pack.  
   
   
       8 . A seal as claimed in  claim 1  wherein the formation includes one or more honeycomb portions.  
   
   
       9 . A seal as claimed in  claim 1  wherein the formation is shaped and/or configures to increase the surface area of the front plate by at least 50%.  
   
   
       10 . A seal as claimed in  claim 1  wherein the formation is a perforated plate.  
   
   
       11 . A seal as claimed in  claim 1 , wherein the front plate is longer than a rear plate of the seal.

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