Induced nuclear reactions: processes – systems – and elements – Reactor protection or damage prevention – Shield or barrier between radiation or heat source and...
Patent
1993-04-05
1994-10-04
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Reactor protection or damage prevention
Shield or barrier between radiation or heat source and...
376282, G21C 1302
Patent
active
053533208
ABSTRACT:
A nozzle for joining a pool of water to a nuclear reactor pressure vessel includes a tubular body having a proximal end joinable to the pressure vessel and a distal end joinable in flow communication with the pool. The body includes a flow passage therethrough having in serial flow communication a first port at the distal end, a throat spaced axially from the first port, a conical channel extending axially from the throat, and a second port at the proximal end which is joinable in flow communication with the pressure vessel. The inner diameter of the flow passage decreases from the first port to the throat and then increases along the conical channel to the second port. In this way, the conical channel acts as a diverging channel or diffuser in the forward flow direction from the first port to the second port for recovering pressure due to the flow restriction provided by the throat. In the backflow direction from the second port to the first port, the conical channel is a converging channel and with the abrupt increase in flow area from the throat to the first port collectively increase resistance to flow therethrough.
REFERENCES:
patent: 3774645 (1973-11-01), Pompa
patent: 4174734 (1979-11-01), Bradham
patent: 4369893 (1983-01-01), Pennell et al.
patent: 5207977 (1993-05-01), Desai
F. J. Moody, "Maximum Discharge Rate of Liquid-Vapor Mixtures from Vessels," Sep. 1975, pp.: Cover, title, Disclaimer, and 1-10, GE report.
Challberg Roy C.
Upton Hubert A.
Beulick J. S.
General Electric Company
Wasil Daniel D.
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