Device for shutting off a vertical conduit for supporting and gu

Details Device for shutting off a vertical conduit for supporting and gu Device for shutting off a vertical conduit for supporting and gu

1990-11-01

1992-05-12

Hunt, Brooks H.

Induced nuclear reactions: processes, systems, and elements

Testing, sensing, measuring, or detecting a fission reactor...

376203, G21C 1708

Patent

active

051125676

ABSTRACT:
The shutoff device consists of a housing (14) inserted in the conduit, in which a movable shutter (32) is mounted for oscillation about a horizontal axis (33) in the housing (14) and comprising a closing member (35) returned into a position of closing a channel (28) by a counterweight (36). A manometer (43) enables the pressure inside the housing (14) to be measured. The shutoff device, wholly passive in operation, can be employed in particular in a conduit for guiding a measurement probe employed in a pressurized water nuclear reactor.

REFERENCES:
patent: 1263914 (1918-04-01), Martin
patent: 3054618 (1962-09-01), Abrams et al.
patent: 3769156 (1973-10-01), Brecy
patent: 3973753 (1976-08-01), Wheeler
patent: 4070239 (1978-06-01), Bevilacqua
patent: 4515750 (1985-05-01), Pardini et al.
patent: 4728479 (1988-03-01), Merkovsky

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