Vent structure fabrication method

Details Vent structure fabrication method Vent structure fabrication method

1974-02-11

1976-03-09

Lanham, C. W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29157R, 29505, 29508, 29517, 29521, 29525, 55477, G21C 710

Patent

active

039422321

ABSTRACT:
A vent structure for reliable long term operation at high temperatures is fabricated by annealing a tubing of predetermined length and size, placing a predetermined number of strands of stabilized zirconium oxide yarn of predetermined diameter longitudinally into one end of the tubing a predetermined distance therein, flattening and coiling and pressing the end portion of the tubing containing the yarn at predetermined pressures, annealing the formed tubing, and installing a particulate filter in the undeformed (normally lower) portion of the tubing. For use in venting helium generating reactor control pins located under hot molten sodium, a vent assembly including the vent structure and providing an air lock between the outer molten sodium and the vent is affixed to the upper end of each control pin.

REFERENCES:
patent: 2269839 (1942-01-01), Young
patent: 2495314 (1950-01-01), Caldwell
patent: 2516930 (1950-08-01), Varian
patent: 3258955 (1966-07-01), Lindsay
patent: 3362061 (1968-01-01), Krasnitz
patent: 3411195 (1968-11-01), Himstedt
patent: 3813287 (1974-05-01), Malang

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