Accession Number : ADD013848

Title :   Dual-Seal-Ring Shaft Seal.

Descriptive Note : Patent, Filed 2 Jan 87, patented 5 Jul 88,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Keba, John E

Report Date : 05 Jul 1988

Pagination or Media Count : 4

Abstract : An intershaft seal device between inner and outer coaxial shafts of a multiple spool turbine is characterized by a primary seal ring and carrier assembly that is keyed for rotation with, and axial movement relative to, the outer shaft with the primary seal ring running between races mounted on the inner shaft. A secondary seal ring is disposed between a cylindrical portion of the primary seal ring carrier and a tubular flange extending coaxially from the outer shaft and effects a balance of axial forces resulting from pressure zones separated by the seal device. Gas turbines, Patents. (JES)

Descriptors :   *GAS TURBINES, *RINGS, *SEALS(STOPPERS), *SHAFTS(MACHINE ELEMENTS), ASSEMBLY, COAXIAL CONFIGURATIONS, EXTERNAL, FLANGES, PATENTS, PRESSURE, TUBULAR STRUCTURES

Subject Categories : Jet and Gas Turbine Engines
      Couplers, Fasteners, and Joints

Distribution Statement : APPROVED FOR PUBLIC RELEASE