Reduced pressure load finger seal assembly

Details Reduced pressure load finger seal assembly Reduced pressure load finger seal assembly

F - Mech Eng,Light,Heat,Weapons

16

J

F16J 15/54 (2006.01) F02C 7/28 (2006.01) F16J 15/16 (2006.01) F16J 15/26 (2006.01)

Patent

CA 2636340

A sealing assembly for achieving a fluid seal between a rotatable shaft and a housing circumscribing the rotatable shaft to inhibit fluid leakage therebetween a high pressure fluid region and a relatively lower pressure fluid region. The sealing assembly includes at least one primary seal, comprising an axial stack of a plurality of diaphragm members, including an upstream diaphragm and a downstream diaphragm. A plurality of finger seal plates are positioned between the upstrearn diaphragm and the downstream diaphragm. The plurality of diaphragm members define a passageway in fluid communication with the high pressure fluid region and a low pressure fluid region. The sealing assembly includes at least one secondary seal positioned within the passageway and configured to convert fluid from a high pressure axial pressure balance to a low pressure axial pressure balance thereby reducing a radially inward pressure load.

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