Heat-insulated device, for insulating the top part of the annular space between the main vessel and the safety vessel of a fast-neutron reactor
US4050988A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1975 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Aug 29, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/496
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a device for heat-insulating the top part of the annular space separating the main vessel from the safety vessel from a fast-neutron nuclear reactor, the two vessels having a common vertical axis and being open at their top part and covered by a horizontal slab in which the ends are fitted so as to be suspended by the slab. According to the invention a substantially cylindrical heat-insulating ring is mounted under the slab and cooperates with the slab and with the facing walls of the vessel to bound the region to be insulated. The ring extends through the annular space in a horizontal plane and is carried by the slab by means of tie-rods, and a top insulating ring divided into two coaxial elements rests on the bottom ring and is secured to the walls of the two vessels respectively by an assembly of spacing springs disposed radially and bearing against the two elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.