Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1994-07-11
1997-03-11
Cummings, Scott
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 96, 277 26, F16J 1534
Patent
active
056093420
ABSTRACT:
This invention relates to a lubricating film type gas seal having a stationary sealing ring (stator) with a radially extending sealing face and a rotating mating seal component (mating rotor) with a radially extending sealing face. The present seal has a reduced number of components and is greatly simplified from working seals described in prior art. The mating rotor is deliberately flexible, and hence it may distort (tilt) throughout an angular range during hydrostatic and hydrodynamic operation and is dependent on rotational speed, pressure, temperature and is also a function of its material and geometric properties. The stationary ring sealing face complies to and follows the angular distortion (tilting) of the mating rotor sealing face in a converging or diverging manner throughout the hydrostatic and hydrodynamic operational range. The flexibility of the stator is a function of its geometric and material properties. Mating rotor and stator flexibility is preferably matched (e.g. using Finite Element Analysis (FEA) techniques) to provide a system flexibility which produces optimum sealing performance. The mating rotor may possess multiple radial sealing surfaces as well as one or more cylindrical sealing surfaces. Initial mating rotor and/or stator seal face angular deflection may be introduced by applying stress and producing subsequent deformation of the structure by a mechanical means.
REFERENCES:
patent: 3499653 (1970-03-01), Gardner
patent: 4415168 (1983-11-01), Takenaka et al.
patent: 4418921 (1983-12-01), Wiese et al.
patent: 4426092 (1984-01-01), Wiese
patent: 4659092 (1987-04-01), Wallace et al.
patent: 4792146 (1988-12-01), Lebeck et al.
patent: 4900039 (1990-02-01), Klecker et al.
patent: 4907512 (1990-03-01), Trytek
patent: 5058905 (1991-10-01), Nosowicz et al.
patent: 5135235 (1992-08-01), Parmar
patent: 5385409 (1995-01-01), Ide
"Engineered Fluid Sealing", John Crane Packing Company; Sep. 1981; pp. 91, 119-121, 191-195, 260-261.
R. Metcalfe, N. E. Pothier, and B. H. Rod; "Diametral Tilt and Leakage of End Face Seals With Convergent Sealing Gaps"; Sep. 1978; (entire paper).
E. Mayer; "Mechanical Seals", 2nd ed.; Apr. 1973; pp. 42-63, 84-87, 95-109.
Bear Clayton
Evenson Robert S.
Peterson Robert A.
Cummings Scott
Harang Bruce E.
Revolve Technologies, Inc.
LandOfFree
Gas shaft seal with flexible converging sealing faces does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gas shaft seal with flexible converging sealing faces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas shaft seal with flexible converging sealing faces will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-437953