Cluster guide with centering and antivibratory positioning device for nuclear reactors
US4752438A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1986 |
| Grant date | Jun 21, 1988 |
| Priority date | — |
| Expiry date | Nov 26, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A tubular cluster guide for use in a nuclear reactor having upper internals comprising a lower plate formed with flow openings is fixed to an upper plate of the intervals and provided with a device for guiding and centering its lower part in the lower core plate. The centering device has a plurality of rigid blades carried by the lower part of the guide, spaced apart angularly about the axis of the guide and engagable in an opening of the lower plate with a radial clearance and a plurality of flexible blades between the rigid blades. The flexible blades bear on the edge of the opening and exert a radially directed force thereon. Bridges may be formed in the lower plate to retain a broken resilient blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.