Nuclear-reactor steam-generator shut-off valve

Details Nuclear-reactor steam-generator shut-off valve Nuclear-reactor steam-generator shut-off valve

1975-06-26

1978-06-27

Schwadron, Martin P.

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

251 25, 251 62, F16k 31122

Patent

active

040968812

ABSTRACT:
In a nuclear reactor installation, a live-steam line leading from each steam generator through the containment, is equipped with a fast-acting valve. If the pressure in the generator rises the valve operates as a safety valve and releases up to one-half of the aperture cross section of the valve, so that there is no danger of damage to the steam generators. According to the invention, the valve is operated for this purpose by two pistons by means of steam. The invention is of interest particularly for light-water reactors, e.g., pressurized-water reactors.

REFERENCES:
patent: 451846 (1891-05-01), Bachman
patent: 1181111 (1916-05-01), Carter
patent: 2333274 (1943-11-01), Scannell
patent: 2728547 (1955-12-01), Crookston et al.
patent: 3149537 (1964-09-01), Fink
patent: 3155365 (1964-11-01), Hartung et al.
patent: 3187637 (1965-06-01), Edmund
patent: 3225544 (1965-12-01), Lemley
patent: 3410518 (1968-11-01), Carsten
patent: 3469503 (1969-09-01), Adler et al.
patent: 3597016 (1971-08-01), Gachot et al.

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