Device for emergency removal of the heat dissipated by a fast breeder nuclear reactor when shut down
US4592888A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1982 |
| Grant date | Jun 3, 1986 |
| Priority date | — |
| Expiry date | Nov 16, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Device for the emergency removal of the heat dissipated by a fast breeder nuclear reactor when shut down, comprising a liquid-liquid heat exchanger immersed in the vessel of the reactor and a liquid-air exchanger for the cooling of the secondary liquid of the latter exchanger. The liquid-liquid comprises a casing composed of a sleeve (18,19) having openings (21,22) for the natural circulation of the cooling fluid of the reactor in contact with the tubes (25) of a nest (20) disposed in the casing of the exchanger. Each of the tubes (25) includes a straight input section and a long straight return section, separated by a helically wound section forming a loop with a low number of turns, inclined to a small extent with respect to the horizontal plane. The coil diameter of the tubes (25) is constant and identical for all the tubes and very slightly less than the interior diameter of the sleeve (18,19). The invention applies in particular to liquid sodium-cooled fast breeder nuclear reactors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.