Reactor coolant pump having improved dynamic secondary seal assembly
This patent describes a pump having a stationary housing with pressurized fluid therein and a shaft with a rotational axis, a sealing arrangement disposed in the housing and sealably mounting the shaft relative to the housing. It comprises a pair of annular seal parts radially spaced from one another by a clearance gap and capable of translatory movement relative to one another, one of the seal parts having a cylindrical surface and the other of the seal parts having an annular groove which opens toward the gap and includes an inner cylindrical surface facing toward the cylindrical surface of the one seal part; and a sealing assembly including an annular liner disposed within the groove in the other seal part and projecting therefrom toward the surface of the one seal part, a flexibly resilient annular seal member disposed within the groove between the cylindrical surface of the one seal part and the second surface of the liner.
- Assignee:
- Westinghouse Electric Corp., Pittsburgh, PA (United States)
- Patent Number(s):
- US 5071318; A
- Application Number:
- PPN: US 7-468316
- OSTI ID:
- 5510168
- Resource Relation:
- Patent File Date: 22 Jan 1990
- Country of Publication:
- United States
- Language:
- English
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