Reactor coolant pump sealing surfaces with titanium nitride coating

Patent · Tue Oct 03 00:00:00 EDT 1989

OSTI ID:7261823

Boes, D J; Zottola, G

This patent describes, in a pump having a shaft and a housing containing pressurized fluid, a rubbing-type sealing assembly for sealably and rotatably mounting the shaft within the housing. The sealing assembly comprising: an annular runner circumscribing and mounting around the shaft for rotation therewith; an annular seal ring circumscribing and mounted within the hosing in non-rotational relationship thereto. The runner and seal ring having surfaces facing and in rubbing contact with one another; and a coating of titanium nitride incorporated on at least one of the surfaces. The runner and seal ring surfaces being composed of stainless steel.

• Assignee: Westinghouse Electric Corp., Pittsburgh, PA
• Patent Number(s): US 4871297
• Application Number: TRN: 90-007996
• OSTI ID: 7261823
• Resource Relation: Patent File Date: 24 Aug 1988
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
PUMPS
SEALS
REACTOR COOLING SYSTEMS
PROTECTIVE COATINGS
TITANIUM NITRIDES
COATINGS
COOLING SYSTEMS
ENERGY SYSTEMS
NITRIDES
NITROGEN COMPOUNDS
PNICTIDES
REACTOR COMPONENTS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
220200* - Nuclear Reactor Technology- Components & Accessories