US 7,320,468 B2 | ||
Sealing arrangement | ||
Jonathan J. Morgan, Swindon (United Kingdom) | ||
Assigned to Rolls-Royce PLC, London (United Kingdom) | ||
Filed on Oct. 27, 2003, as Appl. No. 10/693,524. | ||
Claims priority of application No. 0226685.6 (GB), filed on Nov. 15, 2002. | ||
Prior Publication US 2004/0150164 A1, Aug. 05, 2004 | ||
Int. Cl. F16J 15/44 (2006.01) |
U.S. Cl. 277—422 [277/400; 277/581] | 28 Claims |
1. A sealing arrangement for sealing a leakage gap between relatively moveable parts in a flow path between a region of high
fluid pressure and a region of low fluid pressure, the sealing arrangement comprising:
a hydrodynamic circumferential sealing member having an upstream surface, a downstream surface, a radially outer surface and
a radially inner surface; and
a resilient element that attaches the sealing member to a housing, wherein
the resilient element is fixedly joined to the upstream surface of the sealing member such that during operation both a radial
force induced on the sealing member by fluid flowing axially into and circumferentially over the radially inner surface and
an axial force induced on the sealing member because of a pressure difference across the sealing member is resisted by the
resilient element, and
sealing means is provided between the downstream surface of the sealing member and the housing, the sealing means formed as
a radially resilient ring located in a circumferential groove provided in the housing such that in operation the sealing means
is in sliding contact with the housing and the sealing member.
|