Nuclear reactor installation

Details Nuclear reactor installation Nuclear reactor installation

1976-04-21

1977-11-29

Engle, Samuel W.

Fluid handling

Flow affected by fluid contact, energy field or coanda effect

Means to regulate or vary operation of device

1375992, 176 87, G21C 900

Patent

active

040604535

ABSTRACT:
In a nuclear reactor installation having a containment shell, a live steam line leading outwardly from the containment shell, a fast-acting shut-off valve connected in the steam line and having a flow cross section corresponding to the cross section of the steam line, the shut-off valve including a normally open main valve disk which is actuatable to close in response to pressure from a leak in the steam line, pressure dependent means associated with the main valve disk for sensing a pressure higher than operating pressure of the steam line, an opening mechanism includes a piston-actuated auxiliary valve disk disposed in a cut-out formed in the main valve disk and having an area equal at most to one-half the flow cross-sectional area of the shut-off valve, the auxiliary valve disk being operable by the pressure-dependent means to open the cut-out opening when a pressure higher than operating pressure of the steam line is sensed by the pressure dependent means.

REFERENCES:
patent: 3081919 (1963-03-01), Samuel
patent: 3529630 (1970-09-01), Podolsky
patent: 3605808 (1971-09-01), Fisler
patent: 3631893 (1972-01-01), Seaman et al.
patent: 3734134 (1973-05-01), Vogeli

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