Dual-ring gland seal for dynamoelectric machine rotor

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member

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277 16, 277 27, 277 75, 277174, 310 88, F16J 1548, F16J 1540

Patent

active

044860242

ABSTRACT:
A gland seal assembly is provided which utilizes a double oil flow in conjunction with two gland seal rings. One of the oil streams is passed through a gland seal ring in a radial direction into the clearance gap between that ring and a rotatable shaft. Another flow of oil is passed between that ring and another gland seal ring in such a way as to exert a force between the rings which pushes the two rings in opposing axial directions away from each other and toward axial faces of an angular groove in a gland seal bracket. By causing a force against the gland seal rings in axial opposing directions, the rings are moved towards the axial faces of an annular groove in such a way that gaps between the gland seal rings and the groove wall are reduced with a corresponding reduction in the non-functional flow of oil.

REFERENCES:
patent: 1453083 (1923-04-01), Schuler
patent: 2971783 (1961-02-01), Laser
patent: 3143676 (1964-08-01), Niemkiewicz
patent: 3271037 (1966-09-01), Hammond
patent: 3947044 (1976-03-01), Friedrich
Ross & Sterrett, Hydrogen Cooled Turbine Generators, vol. 59, AIEE. Trans., pp. 11-17, (1940).
Snell, Hydrogen Cooled Turbine Generator, vol. 59, AIEE Transactions, pp. 35-50, 1950
Rice, Liquid Film Seal for Hydrogen Cooled Machines, GE Review, vol. 30, pp. 516-530, (1927).
Snell & Grobel, Continuous Scavenging System for H.sub.2 Cooled Generators, AIEE Transactions, vol. 69, pp. 1625-1636, (1950).
Baudry & Curtis, Gland Seal Systems for Modern H.sub.2 Cooled Generator, AIEE, pp. 1-10, (1957).

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