Box-type flow deflector for nuclear fuel grid

Details Box-type flow deflector for nuclear fuel grid Box-type flow deflector for nuclear fuel grid

1986-11-14

1988-02-16

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376443, G21C 334

Patent

active

047254033

ABSTRACT:
Fuel elements (16) support grids have openings (22,24) in the intersecting matrix strip (12,14) edges adjacent their points of intersection in which box-shaped conduit means (20) with integral mixing vanes (30 and 32) on the flow exit end (28) are secured. The vanes (30,32) create flow in two offset and oppositely transverse directions (34 and 36) relative to the direction of flow through the conduit means in order to generate thermal-hydraulic performance improving vortices (18) in the flow subchannels defined by the diagonal gaps between fuel elements (16). The box-shaped conduit means (20) also improve grid strength and rigidity.

REFERENCES:
patent: 3764470 (1973-10-01), Calvin
patent: 3787285 (1974-01-01), Marstrand
patent: 3844888 (1974-10-01), Calvin
patent: 3886038 (1975-05-01), Raven
patent: 4089741 (1978-05-01), Patterson

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