Balanced mechanical seal assembly and flow ring therefor

Details Balanced mechanical seal assembly and flow ring therefor Balanced mechanical seal assembly and flow ring therefor

1992-07-14

1994-08-02

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 27, 277 65, 277 93R, 277 93SD, F16J 1534

Patent

active

053338820

ABSTRACT:
A mechanical seal assembly having dual seals in which the seal faces of the primary seal members remain essentially perpendicular to the shaft of the equipment being sealed regardless of any misalignment between the shaft and the equipment has a sleeve for mounting on the shaft to provide a support structure wherein all primary seal member faces are aligned with respect to this support structure regardless of loading. The primary seals are biased toward the support structure by the combination of net hydraulic pressure at the mated seal faces plus steady bias from a minimally flexing biasing source, such as compression springs, at one end of the sleeve. Another embodiment further includes a gland mounted to the equipment concentrically to the equipment shaft and an axially floating annular flow ring located within the gland. The ring non-rotatably mates with the primary seal members and the gland, and can shift axially. The ring supplies a fluid flow channel associated with the shaft vanes and which can travel with the vanes to accommodate shaft endplay.

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"222 Motion Seal", Publication of A. W. Chesterton, printed in U.S.A. Feb. 1992, form No. 074930 Rev. 4.

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