No-leak double rotary mechanical seal

Details No-leak double rotary mechanical seal No-leak double rotary mechanical seal

1974-12-09

1976-03-02

Rothberg, Samuel B.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 61, 277 96, F16J 900, F16J 1540

Patent

active

039413942

ABSTRACT:
A substantially no-leak rotary end face seal is disclosed. The seal is comprised of a pair of spaced primary sealing rings between which a rotating mating ring is disposed. A groove in the inboard primary ring face collects leakage from the high pressure side of the inboard seal. A series of radially outwardly inclined holes in the rotating mating ring connect at one end with the groove and at the other end with a radially disposed hydropad in the mating ring face. The outboard primary ring face extends radially inward of the hydropads to provide a continuous sealing surface which is at sub-atmospheric pressure during operation to prevent leakage to the atmosphere. The inclination of the holes produces a pumping action in the leakage in the holes, which is assisted by the hydropads, the pumping action causing the leakage to circulate through a collecting chamber and then back to the sump of the sealed equipment. The hydropads provide the additional function of separating the radially inner sealing faces of the outboard seal which normally would run dry and hence would tend to wear rapidly if in running contact.

REFERENCES:
patent: 2662480 (1953-12-01), Cliborn
patent: 2712459 (1955-07-01), Wahl
patent: 3100647 (1963-08-01), Lee et al.
patent: 3410565 (1968-11-01), Williams

Affiliated with

Also associated with

Rating

No-leak double rotary mechanical seal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with No-leak double rotary mechanical seal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and No-leak double rotary mechanical seal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1274230