F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
277/40, 277/20.5
F16J 15/34 (2006.01) F16J 15/16 (2006.01) F16J 15/20 (2006.01)
Patent
CA 1101460
ABSTRACT OF THE DISCLOSURE A conventional outside seal assembly is disposed outside the stuffing box which surrounds a rotatable shaft. A thermally conductive packing structure is disposed within the stuffing box in concentric and surrounding relationship to the shaft. The packing structure facilitates the transfer of heat from the shaft and the fluid radially outwardly to the stuffing box, and thence to the surrounding atmosphere. The packing structure has thermal insulators associated therewith for preventing heat from being transmitted axially toward the seal assembly, thereby permitting the seal assembly to operate at a lower temperature. This pack- ing structure, in a preferred embodiment, utilizes a plurality of annular packing rings constructed of a thermally conductive material, which packing rings are axially aligned and are spaced apart by intermediate washerlike insulators. The seal assembly preferably has a bladed fan secured to the rotatable part thereof for increasing the air flow across the seal faces and the stuffing box.
319312
Durametallic Corporation
Kirby Eades Gale Baker
LandOfFree
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