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Title: Segmented instrumentation tube including a locking sleeve for interlocking the segments of the instrumentation tube

Segmented instrumentation tube including a locking sleeve for interlocking the segments of the instrumentation tube, so that the threaded ends of the instrumentation tube do not unthread when subjected to vibration, such an instrumentation tube being suitable for use in a nuclear reactor pressure vessel. The instrumentation tube has a first member having a threaded end portion that has a plurality of first holes circumferentially around the outside surface thereof. The instrumentation tube also has a second member having a threaded end portion that has a plurality of second holes circumferentially around the outside surface thereof. The threads of the second member are caused to threadably engage the threads of the first member for defining a threaded joint there between. A sleeve having an inside surface surrounds the end portion of the first member and the end portion of the second member and thus surrounds the threaded joint. The sleeve includes a plurality of first projections and second projections that outwardly extend from the inside surface to engage the first holes and the second holes, respectively. The outside surface of the sleeve is crimped or swaged at the locations of the first projections and second projections such that the firstmore » projections and the second projections engage their respective holes. In this manner, independent rotation of the first member with respect to the second member is prevented, so that the instrumentation tube will not unthread at its threaded joint. 10 figures.« less
Inventors:
Issue Date:
OSTI Identifier:
143945
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (United States) OAK; SCA: 220400; PA: EDB-94:051826; SN: 94001164761
Patent Number(s):
US 5,263,060/A/
Application Number:
PAN: 7-853,566; TRN: 94:018530
Contract Number:
AC03-90SF18495
Resource Relation:
Other Information: PBD: 16 Nov 1993
Research Org:
Westinghouse Electric Corp
Country of Publication:
United States
Language:
English
Subject:
22 NUCLEAR REACTOR TECHNOLOGY; IN CORE INSTRUMENTS; GUIDE TUBES; DESIGN; SLEEVES; MECHANICAL VIBRATIONS; PRESSURE VESSELS