Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1995-09-06
1997-02-04
Cummings, Scott
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 55, 4151744, 4151745, F16J 15447, F16J 15453
Patent
active
055990266
ABSTRACT:
A rubbing strip is used in conjunction with the sealing strips of a seal to prevent contact between the sealing strips and a rotating member with which the sealing strips form a seal. The rubbing strip comprises a strip of material which is oriented coaxially with the sealing strips and which has a clearance with respect to the rotating member which is less than the least of the clearances provided by the sealing strips with which it is associated. The material and the cross-sectional shape of the rubbing strip may be selected in accordance with desired wear properties. The rubbing strip may be formed integrally with a sealing ring, or may be formed to be inserted into a complementary receiving recess on a sealing ring.
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Sanders, W. P., "Turbine Steam Path Engineering for Operations and Maintenance Staff," 1988, pp. 4.1-4.20, Chapter 11, and p. 13.30.
Mitola Anthony F.
Sanders William P.
Cummings Scott
Innovative Technology, L.L.C.
LandOfFree
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