Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1990-10-17
1992-04-21
Cuchlinski, Jr., William A.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 81S, 277 88, 432115, F16J 1500, F27B 724
Patent
active
051061058
ABSTRACT:
A rotary seal used to prevent the escape of contaminates from a rotating kiln incinerator. The rotating seal combines a rotating disc plate which is attached to the rotating kiln shell and four sets of non-rotating carbon seal bars housed in a primary and secondary housing and which rub on the sides of the disc. A seal air system is used to create a positive pressure in a chamber between the primary and secondary seals to create a positive air flow into the contaminated gas chamber. The seal air system also employs an air inlet located between the secondary and tertiary seals to further insure that no contaminates pass the seal and enter the external environment and to provide makeup air for the air which flows into the contaminated gas chamber. The pressure exerted by the seal bars on the rotating disc is controlled by means of a preload spring. The seal is capable of operating in a thermally changing environment where the both radial expansion and axial movement of the rotating kiln do not result in the failure of the seal.
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Prepp Operating Experience and Status, R. L. Drexler, Technical Specialty Meeting, Power Reactor and Nuclear Fuel Development Corp., Japan, 17-20 Oct. 1989.
Prepp Rotary Kiln Seals-Problem and Resolution, R. L. Drexler, Incineration Conference, Univ. of Calif. at Irving, 16 May 1990.
Albrecht John M.
Cuchlinski Jr. William A.
DePumpo Daniel G.
Moser William R.
Smith Bradley W.
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