Reactor coolant pump having thermally stabilized hydrostatic sea

Details Reactor coolant pump having thermally stabilized hydrostatic sea Reactor coolant pump having thermally stabilized hydrostatic sea

1990-01-16

1991-06-18

Cuchlinski, Jr., William A.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 85, 277 92, F16J 1538

Patent

active

050244523

ABSTRACT:
A pump includes an annular runner and annular seal ring mounted for undergoing relative rotation. The runner includes an annular support member and an annular faceplate member. The faceplate member has a sealing surface and is mounted by a clamp ring member to the annular support member. The support member includes an annular body having outer and inner circumferential edges, an outer raised circumferential rib defined on the body adjacent to its outer circumferential edge at one side of the support member for engagably supporting the faceplate member at an adjacent side thereof, an inner raised circumferential rib defined on the body adjacent to its inner circumferential edge at the one side of the support member for retaining a separate O-ring between the adjacent sides of the faceplate and support members, and an annular recessed cavity defined in the body at the one side of the support member between the outer and inner ribs for substantially spacing the faceplate member from the support member at the adjacent sides thereof to thermally insulate the faceplate member from the support member. Also, a middle raised circumferential rib is defined on the annular support member body between the outer and inner ribs for defining a seat groove with the inner rib for the O-ring.

REFERENCES:
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E. Mayer: "Mechanical Seals", 2nd Edition, pp. 51, 52, 152, and 153, published 1972.

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