Liquid heaters and vaporizers – Safety devices – Self-closing valve
Patent
1983-03-07
1984-09-04
Favors, Edward G.
Liquid heaters and vaporizers
Safety devices
Self-closing valve
122 32, 122504, 165134R, 376277, F22B 3744
Patent
active
044690517
ABSTRACT:
The invention relates to an emergency shut-off device, in the case of leakage, of a tube of a steam generator where the heat of vaporization is contributed by a liquid metal circulating in contact with the outer surface of the tube. The device includes on the terminal portion of the tube connected to the water supply device a tubular bush interposed in the path of the feed water. The bush contains a valve connected to the bush by a rupture part. The breakage of the part under the effect of an increased flow of water, in the case of a leakage, enables the closing of the outlet of the bush. The device includes also, in the terminal portion of the tube connected to the steam collector a bush containing a free valve enabling the steam outlet to be closed in the case of a leakage in the tube. The invention is applied in particular to steam generators of fast breeder nuclear reactors cooled by liquid sodium.
REFERENCES:
patent: 3294934 (1966-12-01), Norris et al.
patent: 3350277 (1967-10-01), Costes
patent: 3583479 (1971-06-01), Taylor et al.
patent: 3713969 (1973-01-01), Cahill, Jr.
patent: 3924675 (1975-12-01), Essebaggers
patent: 4238290 (1980-12-01), Schabert et al.
patent: 4311189 (1982-01-01), Robin
Favors Edward G.
Novatome
Warner Steven E.
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