Mechanical seal with welded bellows

Details Mechanical seal with welded bellows Mechanical seal with welded bellows

1986-05-19

1988-06-07

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277200, 277 93SD, F16J 1552, F16J 1536

Patent

active

047492007

ABSTRACT:
A rotary mechanical seal with metal bellows having reinforced weld joints. The bellows is formed of a plurality of adjacent annular discs or diaphragms having inner and outer circumferences welded together. A plurality of annular reinforcing rings are provided, each being associated with the welded joint at one circumference of the diaphragms. The associated rings and the circumferences define a weld area. The presence of the reinforcing rings allows for larger and stronger welds along the associated circumferences, which increases the capacity of the seal to withstand operating pressures.

REFERENCES:
patent: 3277927 (1966-10-01), Schneider
patent: 3977685 (1976-08-01), Greenawalt
patent: 4365816 (1982-12-01), Johnson et al.
patent: 4483541 (1980-01-01), Wentworth

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