Gas seal for shafts with a compensating ring

Details Gas seal for shafts with a compensating ring Gas seal for shafts with a compensating ring

1981-12-01

1983-03-15

Ward, Jr., Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 87, 277 88, 277 92, 277 26, F16J 1536, F16J 1540

Patent

active

043765408

ABSTRACT:
A gas seal for a rotatable shaft of a housing which comprises, a first rotatable dimensionally stable seal ring connected to the shaft. A diaphragm is connected to the housing which exerts an axial bias on a second rotatable seal ring. The bias of the diaphragm provides a gap space between the rotatable and fixed seal ring which is supplied with a sealing gas. The material of the fixed ring is different from that of the diaphragm. A compensating ring is connected unilaterally to the fixed ring and of a material at least partly the same as the fixed ring. A slide seat is defined between the compensating ring and the fixed ring to permit axial movement of at least a part of the compensating ring. This part is connected in turn to the diaphragm so that stress free transmission of axial thrust is provided between the seal ring and the diaphragm.

REFERENCES:
patent: 1876515 (1932-09-01), Emmet
patent: 2100220 (1937-11-01), King
patent: 2859988 (1958-11-01), Payne
patent: 2884268 (1959-04-01), Amirault et al.
patent: 2937039 (1960-05-01), Santapa
patent: 2994547 (1961-08-01), Dolhun et al.
patent: 2995390 (1961-08-01), Gardner
patent: 3797976 (1974-03-01), Moriya et al.
patent: 4071253 (1978-01-01), Heinen et al.

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