Pressure tube spacer

Details Pressure tube spacer Pressure tube spacer

1997-06-16

1999-04-06

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Reactor structures

Circulating fluid within reactor

376286, 376292, 376366, 2851231, 138113, 24 20R, G21C 1500

Patent

active

058928065

ABSTRACT:
A spacer for maintaining a pressure tube in spaced relation with a caland tube of a nuclear reactor. The spacer comprising a split ring adapted to be disposed about the outer surface of said pressure tube. The ring has a central annular body portion with a raised bearing surface thereon adapted to contact the inner surface of said calandria tube and prevent contact between said outer surface and said inner surface. An annular land projecting from each side of said central body portion is adapted to receive a collar thereon effective create an interference fit between said ring and said pressure tube and thereby constrain axial movement of said spacer on said pressure tube. The spacer of the present invention maintains its location on the pressure tube and does not suffer the axial movement which characterizes some conventional spacers. The bearing surface can have a coating to reduce wear and heat transfer.

REFERENCES:
patent: 3022085 (1962-02-01), Kennedy, Jr.
patent: 3106520 (1963-10-01), Wolfe et al.
patent: 3213889 (1965-10-01), Cotman, Jr.
patent: 3593390 (1971-07-01), Pettigrew
patent: 3867055 (1975-02-01), Wooden
patent: 4033381 (1977-07-01), Newman et al.
patent: 4531552 (1985-07-01), Kim

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